Abrasive is sharp, hard material, for grinding the surface of softer material. There are natural and artificial abrasives abrasives abrasives two categories. Classification according to the hardness and the general extravagant super abrasive abrasive two categories. A wide range of abrasive, from softer household detergents, precious hard abrasive material into the diamond. Each is a precision abrasive product manufacturing essential materials. Many natural abrasives.
2013年9月29日星期日
cutting machine cut bricks
Salt bath furnace heat treatment plant is now generally use the Quick Start new approach; electrode arrangement complicated than before. This is Andrew, furnace repair often encountered in different Non
woven flap wheel shapes and sizes out cat refractory bricks used because the small number of furnace repair may well be the next to use another size, so you can not custom processing. Initially furnace repair, we use Fei child tick, hacksaw sawing, grinding wheel machining methods such as bricks, very cumbersome, resistance. Brick waste, without rules, affecting the quality stove. To this Grinding
wheel china end, we have worked out in practical work using all the bricks cut down machine method, the test cut out bricks are the rules, in full compliance with size requirements, the yield of 100%. Use this method should pay attention to. (A) before cutting bricks, press size requirements in the brick on the dash, and then use the bricks central activity shovel mouth tight before cutting, sheet is not tight, easy to damage the cutting discs, an accident · (2) before cutting The bricks soaked in water for a little longer cut, otherwise, it manufacture will manufacture manufacture generate a lot of powder, pollute the environment. Cutting machine cut bricks, the method is simple, saving time and labor, high yield, furnace repair units worth a try. Using cutting machine cut bricks salt bath furnace heat treatment plant is now generally use quick launch new methods, electrode arrangement complicated than before. Thus, furnace repair often encountered in different shapes and sizes of bricks required, due to the small number used in the next repair imitation may well be to use another size, so you can not custom processing. Initially furnace repair, we use the chisel tick, hacksaw sawing, grinding wheel and other processing methods bricks
water-jet cutting
High pressure water jet cutting is used to cut only a few millimeters thick foil or plastic, leather and paper cutting wheel or wood sheets. At this point has been able to carry on a CNC controlled cutting with sharp edges and small radius tread pattern. Cutting when necessary, placed overlapping plates. If the high-pressure water-jet abrasive added (garnet sand (SiO.).), May be about 100mm thick cut of almost all materials, including granite or metal. In addition to abrasives and water consumption, the splitting tool wear does not occur. Cutting edge does not produce heat and therefore do not abrasive appear organizational changes, no glitches, no material deformation process according to this principle work Trumatik w $ 2500 a gantry type CNC cutting machine (Figure 1) in the X and Y directions Operating range abrasive roll is 2500 × 1250mm. cutting through the sensor head can be 200mm in height adjustment control. Therefore, Germany Di Green Roots machine factory TrumpfGmbH + Co cutting machine that can cut workpieces weighing up to 1000kg in case of adding the abrasive, the thickness of the workpiece to] 00mm, without abrasives may be to 150ram. Maximum positioning speed parallel with the axis of 40m / n, in. In the same direction at up to 56m/min. Using Tru-magraph CC220 type CNC path control can be mounted on the O.01mm toe smallest increment for programming. Position error in accordance with the provisions of German Engineers Association VDl3441 in the measurement range of ± 1m length 0.1m ......
2013年9月28日星期六
cutting disc functions
A stainless steel cutting discs, grinding wheel cutting disc I produced a variety of grinding wheels, resin reinforced grinding wheel cutting discs, cymbals wheel angle grinding, flexible stainless steel grinding, glass grinding stone bendable, flexible cast iron grinding, scale abrasive sanding belt films , ultra-thin stainless steel cutting discs, titanium cutting disc, ingot cutting disc, cutting disc milling of cast iron
2 Golden Goat cutting discs, resin cutting discs I produced a variety grinding wheel, resin reinforced grinding wheel cutting discs, cymbals wheel angle grinding, flexible stainless steel grinding, glass grinding stone bendable, flexible cast iron grinding, fish scales, thin stainless steel cutting discs, titanium cutting disc, ingot cutting disc, cutting disc milling of cast iron
3 cutting discs, steel cutting discs
I produced a variety of grinding wheels, resin reinforced grinding wheel cutting discs, cymbals wheel angle grinding, flexible stainless steel grinding, glass grinding stone bendable, flexible cast iron grinding, scales tablets, ultra-thin stainless steel cutting discs, titanium cutting discs, steel ingot cutting disc, cutting disc milling of cast iron
4 toothless cutting discs, grinding wheels Blade
I produced a variety of grinding wheels, resin reinforced grinding wheel cutting discs, cymbals wheel angle grinding, flexible cut off wheel stainless steel grinding, glass grinding stone bendable, flexible cast iron grinding, scales tablets, ultra-thin stainless steel cutting discs, titanium cutting discs, steel ingot cutting disc, cutting disc milling of cast iron
5 brake line cutting discs, cutting discs throttle cable
I produced a variety of grinding wheels, resin reinforced grinding wheel cutting discs, cymbals wheel angle grinding, flexible stainless steel grinding, glass grinding stone bendable, flexible cast iron grinding, scales tablets, ultra-thin stainless steel cutting discs, titanium cutting discs, steel ingot cutting disc, cutting disc milling of cast iron
6 thin cutting discs, grinding cutting disc
I produced a variety of grinding wheels, resin Sanding disc reinforced grinding wheel cutting discs, cymbals wheel angle grinding, flexible stainless steel grinding, glass grinding stone bendable, flexible cast iron grinding, scales tablets, ultra-thin stainless steel cutting discs, titanium cutting discs, steel ingot cutting disc, cutting disc milling of cast iron
7 angle grinding, angle grinder grinding wheel
I produced a variety of grinding wheels, resin reinforced grinding wheel cutting discs, cymbals wheel angle grinding, flexible stainless steel grinding, glass grinding stone bendable, flexible cast iron grinding, scales tablets, ultra-thin stainless steel cutting discs, titanium cutting discs, steel ingot cutting disc, cutting disc milling of cast iron
8 Resin cutting discs, grinding wheel cutting disc
consolidation of the domestic Abrasive
In the entrance area to cut pieces as monomers, and its share of China's import growth still equal good. 2010 China's machine tool imports despite a substantial increase in imports of manufactured abrasive roll goods organs but not reasonable, high-grade resources, high energy consumption of products accounted for a large proportion of imported products subject to further beautify the organization.
China Machine Tool Equipment wealth Association statistics show that in 2010 China's machine tool import totaled $ 7.03 billion, an increase of 48.4%, of which metal processing machine tool imports $ 1.85 billion, an increase of 31.3%, significantly lower than the growth rate grinding wheel manufacture of its machine tool manufacturing Works growth. In the export of products, abrasives imports continued rapid increase, of 15.3 billion U.S. dollars, an increase of 100 percent, and cutting tools, tool machine tool industry to become the largest amount of manufactured goods imported two types of system works, machine tool equipment, manufactured goods accounted for Entrance amount of 44.6%.
In these two types of manufactured goods, high-end non woven abrasive resources such as abrasives and cutting tools, high energy consumption products occupy a large proportion of the absolute value of the machine at a higher proportion of imported products are getting smaller, accounting for only 26.3% low compared to 2009 by 3.4 percentage points over the same period, imports of product structure management status differences have not been changed.
2013年9月27日星期五
abrasive belt and traditional differences
CBN abrasive belt grinding wheel and traditions are different, it has a grinding heat a small, high grinding efficiency and grinding wheel china to maintain good shape and other characteristics, it is precisely because of these characteristics, so that in industrial use more widely.
We know, CBN just inferior to the hardness of diamond, but it will have far higher thermal stability of diamond, metal and alloys of Fe tool, it has a large chemical inertness. Therefore CBN abrasive machining of ferrous and metal materials other common feature is the abrasive can not be compared. And its complement on a diamond wheel just not involve aspects.
CBN abrasives and ordinary compared with the Abrasive paper following advantages:
1, CBN abrasive than ordinary high hardness. So it's particularly suitable for processing high hardness, high toughness, high strength, low thermal conductivity of the material, while its metal removal rate is 10 times the diamond.
2, CBN abrasive grinding performance is very excellent, not only because it is difficult to grind materials capable of processing, improve production efficiency, but it is also beneficial to non woven flap wheel strictly control the shape and dimensional accuracy of the workpiece, and effectively improve the work grinding quality, thus improving the integrity of the workpiece surface after grinding.
3, CBN abrasive less wear, long life cycle, while grinding is relatively high, it can get to use reasonable good economic results.
4, CBN abrasive in use, changes in the shape and size are very slow, so it is suitable for CNC machining centers precision machining parts.
ceramic corundum abrasives
(1) good toughness
Ceramic corundum corundum abrasive than ordinary high toughness more than doubled, wheel wear less, to maintain a quick change disc good shape for precision grinding and profile grinding, easy access to high dimensional accuracy and consistency of size and shape.
(2) self-sharpening
Use abrasive corundum ceramic surface rupture along the grain rather than corundum transgranular rupture, resulting in less heat grinding, grinding temperature is low, do not burn the workpiece.
(3) sharp abrasive cutting ability
Ceramic corundum abrasive grinding efficiency, can be cutting and grinding disc large depth of cut, high-feed, heavy-duty and efficient grinding.
(4) Wheel durability
Long life ceramic corundum abrasives, replacement frequency less, reducing the auxiliary processing time and downtime, facilitates the use of CNC machine tools and automatic automation.
(5) the higher cost
Ceramic corundum price much lower than CBN and diamond abrasives, but the performance is far superior to mini flap disc ordinary corundum abrasives.
(6) easy trimming
Ceramic corundum abrasives can be used when the trimming corundum grinding wheel dressing device without having to use expensive finishing equipment.
Ceramic corundum abrasives With these advantages are now widely used in aerospace, automobiles and motorcycles, bearings, molds, instrumentation and other fields of grinding and forming mill and other aspects of processing.
2013年9月26日星期四
Coated Abrasives some introductory
This new product is mainly used to improve the surface finish, which enables a belt, and other modifications with mini flap
disc better performance, and traditional coated abrasive material in the flexible substrate and the fixed layer of glue on a single mineral grains. In recent years, with the abrasive art to improve its performance. The abrasive has a better connection of the card account, a new cube-shaped abrasive grains, the abrasive grains by electrostatic material arranged in rows on the bottom plate in order to improve the cutting performance of coated abrasives. This cutting
and grinding disc three-dimensional coated abrasive having a thickness, if necessary, the abrasive grains can be polished appearance. As with all aspects of the coated abrasive improvements, so it is more than the other board material products more efficiently. Its material removal rate per unit bandwidth, in some applications, the coated abrasive belt grinding wheel is superior. With conventional coated abrasive grit surface irregular contrast, the abrasive
cloth belt new Apex is a coated abrasive comprising abrasive minerals, and it is a rule according to the precise geometry of the arrangement pattern of the adhesive (spherical, cube, cone). See sharpen the initial period, the exposed surface of the pyramid-shaped pointed will soon be worn, but also continuously generate new abrasive grains. Abrasive wear when all are finished, the surface will change color belt, suggesting that the belt should be replaced operatives.
abrasive
blasting the health of workers involved, so that countries have drawn up regulations prohibit silica ore containing 1% or other similar substance on the free silica as abrasive blasting material. In the UK we are fortunate to have expendable mill buildings can meet the abrasive tools requirements of health and safety regulations, and some even meet the most stringent requirements of the U.S. Navy. Expendable abrasive industry has always been concerned about the development of new products to meet market demand. Currently, the UK market for the consumption of abrasives, mainly copper values, cinder and olivine. Copper slag is relatively inexpensive, readily available, compact, with sharp and consistent quality crystal. Water sandpaper quenching molten slag, copper refining method to get into a black transparent material particles. This quenching the molten material effective to stabilize the composition in the glassy slag, the slag in the grain boundary even allow slow cooling, and often does not allow the metal accumulation. After the slag from the furnace, copper slag processing by evaporation, and its copper and zinc reduced to very low levels. Essentially copper slag containing iron silicate minor amounts of other metals, the content of toxic metals in the required range. Particle size of 0.15 to 1.71 Knife 'no slag or cinder, also known as the Sanding
Sheets iron silicate, power plant from Western Europe. Cinder lighter in color and density than copper slag small. Cinder copper slag blasting to white than some, but the surface is not necessarily smooth, cinder dust generated due to light-colored and black copper slag generated dust.
2013年9月25日星期三
automatic grinding machine and high-speed grinding machine
1, precision grinding machine. Using emery cloth, electrical appliances used in Japan and spring, Fuji, the whole spray, the color of the microcomputer colors.
2, Taiwan linear guide rail.
3, take the card lock design Squeegee, Squeegee alignment deformation can ensure the quality of grinding.
4, this automatic grinding machine, high Abrasive paper speed grinding machine, precision grinding machine can be used with manual mechanical scraper blade grinding.
5, the special design of the grinding wheel, abrasive cloth with no sense of pressure, scraping gum without distortion, no corrugated phenomenon, to ensure precision grinding.
6, grinding degree angle to suit a variety of PSA sanding disc special printing performance.
7, grinding machine is equipped with dust collector device, can reduce industrial pollution, is conducive to the health of the staff and equipment maintenance.
8, automatic grinding machine, high speed grinding machine, precision grinding machine is simple, can be operated without professional technicalgrinding machine theory
Grinder with variable speed control system, can easily adjust the various components suitable for abrasive grinding speed. Using electric - gas proportional pressure control valve closed loop feedback, individually adjustable pressure device. Set slow down function on the Bonded abrasives plate, effectively prevent crackers, broken parts. Through a time relay and a grinding counter processing requirements can be accurately set and control the grinding time and grinding laps. Adjustable working pressure mode, to grind or lap time set will automatically shut down when the alarm for semi-automatic operation.
Grinding machine speed control method for a three-stage grinding
the beginning, and end of formal phase, beginning up speed rotary grinding, abrasive formal phase constant rotation, the end of the deceleration phase rotating abrasive, characterized in that In the initial stage of grinding, grinding speed artificially control the acceleration from zero increases from slow to fast when the grinding speed is grinding wheel china raised to half the formal polishing rate, an inflection point of acceleration changes occur, the acceleration of the rotational speed control abrasive The maximum value is coming slowly decreases until abrasive polishing rate of speed reaches formal, abrasive speed acceleration is reduced to zero.
Fixed abrasive polishing using this feature, according to the relative movement between the workpiece grinding track density distribution, the rational design of abrasive abrasive density distribution, so that the abrasive in the grinding process are abrasive wear does not affect accuracy of face , which significantly improves the accuracy of the workpiece face, and to avoid the trouble of dressing grinding. In the plane solid abrasives grinding, abrasive rotary motion is the main movement of the workpiece movement is assisted movement. In most cases, the pressure in the grinding work is floating, the movement of which is unknown. Therefore, to analyze the force on the workpiece to determine the stress state and its law of motion. Take the workpiece grinding system for the separation of the body, the establishment of the workpiece by the Mounted flap wheel force balance equation, solving the equation of movement of the workpiece can be obtained.
Grinding machine host using speed motor drive, power deceleration system configuration, soft start, soft stop, smooth operation. Through the upper and lower lapping plate, a sun gear, the planetary wheel is formed in the processing of the four directions, the polishing speed of movement coordination, to both upper and lower surfaces of the Sanding disc efficient operation of the grind. Lower plate can lift for easy loading and unloading of the workpiece. Pneumatic sun gear change to the device, precise control of both sides of the workpiece grinding accuracy and speed. Random with a correction wheel for the upper and lower platens parallel correction error.
Basket Mill Grinding inherited the basket mill grinding and dispersing two processes on one machine, a process to achieve the characteristics, but also can be used alone as a dispersing machine (when the scattered disk in the working position, the grinding basket is not falling) . The material to be ground, and can realize the function of the first dispersed grinding (grinding basket down when working position, the material can be efficient fine grinding).
2013年9月24日星期二
What types of grinding machine
Two kinds of single-disc and double-disc, double-disc grinding machine with the most common. In the double-disc grinding machine (see [double disc grinding machine]), a plurality of workpieces simultaneously be placed in the upper and lower lapping plate inside the abrasive cloth belt cage between the cage and the workpiece driven by the eccentric or planetary bodies for movement parallel to the plane . Lower lapping plate rotation, parallel to the grinding disk can not turn, or reverse rotation of lower plate, and move up and down to compress the workpiece (pressure is adjustable). In addition, the grinding plate can rotate around the column with the arm at an angle for loading and unloading workpieces. Double disc grinding machine mainly used ceramic flap disc for processing two parallel planes, a plane (the need to increase compression artifacts attachments), cylindrical cylindrical and spherical (used with a V-shaped groove grinding disc) and so on. Processing outer cylindrical surface, because it is necessary to slide the workpiece rolling again be a reasonable choice retainer hole slot type and arrangement of angles. Only a single-disc grinding machine under the grinding discs, grinding the workpiece for the next plane, enable workpieces of varying shapes and sizes with disc machining, grinding accuracy. Some grinding machine also in the grinding process with nonwoven belt automatic correction mechanism abrasive discs.
Shaft grinding machine consists of forward and reverse rotation of the workpiece spindle drive or lap (adjustable grinding ring or grinding rod) rotates, the structure is relatively simple, for grinding cylindrical cylinders.
Special grinding machine according to the type of workpiece to be polished, a center hole grinding machine, ball mill and a gear grinding machine and so on. In addition, there is a centerless grinding principle similar centerless grinding machine for grinding a cylindrical workpiece.
Supply mews cutting disc polished pieces
Mews cutting discs are widely used in electric power, petrochemical, metallurgy system piping and boiler-site field service repair work. Especially for power plants in the water wall tubes, boiler heat exchanger tubes, the provincial gas pipe field replacement effect is quite abrasive manufacture good, especially for power plants, petrochemical, and other open flames contain flammable gas is not easy to move the on-site cutting tube replacement. Especially suitable for pipe spacing narrow, high-altitude site cutting corners and tube replacement. PFERD thin cutting discs lead the current application of the trend, widely praised by users. The thickness of 0.8,1.0,1.6 mm standard abrasives cutting disc has the following characteristics: cutting force performance, manual control easy, straight cut, no jitter. Today kids on science activities "slow and fast paper paper" First, I let the children do the test with a white paper, take a look at pieces of paper fall look. Then use two different colors of paper, so that children comparison and also fall, which one is faster. Finally, let children make paper dragonflies, observe the whereabouts of the way, and then compare and paper which fall faster. Children in the cutting disc experimental exploration of perception and the speed of paper fall to experience the fun of exploring, knowing the paper made of paper fall fastest dragonflies, children are scrambling to express their views. Activities and achieved good results. I think that scientific activity in the kindergarten activities can not be underestimated, so that children learn not only scientific knowledge, but also to stimulate the children's desire to explore.
2013年9月23日星期一
abrasives industry Approach of
Network marketing is the rise in recent years, in foreign countries has matured as a marketing approach, Internet marketing for business use of the Internet to build brand image provides favorable conditions, whether it is large or small and medium enterprises can be used to show the grinding disc way for their own brand image. There are many forms of network marketing, it is understood that some businesses are more suitable for abrasives in the form of a email marketing, text link ads, online image ads, search engine results log, search engine PPC, Blog marketing, network hype, online shops other forms.
Email Marketing
Email marketing is the premise of the user prior permission, by way of e-mail users to pass valuable information to the target of a network marketing tool. We coated abrasives companies can under the circumstances and the information we have related enterprise business Email, periodically send information about our products and the development of information, as well as our corporate clients authoritative information caused concern, but also in time to send some festivals Blessing information to increase our customers' trust and goodwill and so on.
Text link ads
Text link advertising is devoted to the use of a piece of text associated with our enterprise products known sites display their products and services featuring a form of advertising that can effectively enhance product sales and brand awareness. We coated abrasives business professional information site is also relatively high degree of concern, we can cutting and grinding disc choose the right site and our cooperation, good showcase our products, greatly increasing the awareness of our products and customers to understand our business opportunity, greatly increase the opportunities for our customers choose, they click on our text chain many of our coated abrasives products interested potential customers. Network Image Ads: Network image ads is to use the company's own website or business-related sites running pictures and other products related to our product information, so that users can more easily understand a form of our products. We coated abrasives company's products is a very easy to understand through pictures of products, we are in the right website to put up pictures of our products, our products allow customers to have a preliminary understanding, conveniently close to the customer Distance to understand product opportunities, increase customer-depth understanding of the file belt product before purchase confidence and desire to be able to increase customer turnover wider range, because the preview pictures of our products are a large part of the potential we can fight to customer transactions.
Search engine log survey shows that few users will access the rows in the search results after the first 50 sites, ie more front page rank, promotion effect is even more obvious. Understand search engine website ranking rules, we have targeted for website optimization, search engine results to match ranking principle, although it may obtain crucial front in qualifying.
Abrasive products are mainly divided abrasive corundum
ilicon carbide abrasive two categories, specifically, there are basically the following: corundum abrasive, the main component of Al2O3, with medium hardness, toughness, particle Fengrui, relatively inexpensive, suitable mini flap disc for machining high tensile strength of the metal. Microcrystalline corundum abrasives and black corundum abrasives are its derived varieties; corundum abrasive, slightly higher than the hardness of corundum, but poor toughness, easy to cut into the workpiece during grinding, good self-sharpening, less heat, grinding ability, and high efficiency. Chromium corundum abrasive is its derived varieties.
Another crystal corundum abrasive material non woven flap wheel particles are composed of a single crystal, and has a good polygonal cutting edge, high hardness and toughness, grinding ability, less grinding heat, the disadvantage is the high cost of production, lower yield, so the price is relatively high, zirconium corundum abrasives is crystalline compound, slightly lower hardness, crystal size is fine, good wear resistance; black silicon carbide abrasive, green silicon carbide abrasive, cubic abrasive cloth belt silicon carbide abrasives, silicon carbide abrasive cerium , is silicon carbide abrasive, the main ingredient is silicon carbide SiC, high hardness, brittleness, sharp abrasive grains, good thermal conductivity, wear resistance stronger, more suitable for processing brittle metals and non-metallic products.
2013年9月22日星期日
sandpaper, what kind of production technology
First, what are the types of sandpaper? There are many types of sandpaper, including sponge sandpaper, dry abrasive paper, sand paper mill and so on. Product main role is to grind metal, wood standard abrasives and other surfaces to make them smooth and smooth.
1 dry sanding paper: suitable for rough or polished some of the rough stuff, such as iron pipes metals.
2 sponge sandpaper: Suitable for sanding smooth part of a variety of materials can be. 3 mill sandpaper: relatively thin texture, water mill grinding some texture sandpaper for more delicate things, and is suitable for post-processing;
It is one of the mill grit sandpaper gap between the small, very fine grind is also smaller, when used in conjunction with water flowing out will be very fine, so use with water, if water sandpaper to get nonwoven belt it dry grinding very fine sand is left in the gap, the abrasive surface becomes less than that of the light so as to achieve some effect, it is a large gap between the sand out of the very fine grinding is larger in the grinding process of its big reason of the clearance will fall to very fine, it does not need to use with water. Second, sandpaper production technology first: mechanical polishing, with the installation of a glass polishing wheel polishing machine, dip glass polishing powder on the glass surface polishing, polishing the cutting and grinding disc same operation process with the other. Second: Chemical polishing: the glass surface with a chemical polishing solution, the operation process, there are two, that is the whole cell method soaking the glass was immersed in the liquid pool 2 to 3 hours and finally clean, for glass both sides polished and glass-sided immersion or not polished surface protection film attached, affixed with tape from one edge of the block waterside, flat glass after glass surface of the liquid down in the depth of not less than 3 mm and as uniform as possible, 2 to 3 hours to finally clean.
alloy wheel options
1) resin bond diamond grinding wheel bond strength is weak, so when grinding to good self-sharpening, multi-chip sawing logs features: clogging, high grinding efficiency, small grinding force, low grinding temperature, the disadvantage is resistant to poor grinding, abrasive wear non woven abrasive and tear, it is not suitable for heavy duty grinding.
2) vitrified diamond grinding wheel wear and binding capacity than the resin bond strong, sharp cutting, grinding, high efficiency, easy to heat and clogging, thermal expansion less easy to control precision surface grinding coarse shortcomings, costs than high.
3) metal-bonded diamond wheels combined with high strength, wear resistance, low wear, long life, grinding, low cost, can cut off disc withstand a greater load, but sharp poor, easy to plug.
4) abrasive particle size on the grinding wheel cutting the amount of blockage and have a certain influence, coarse sand and fine sand compared to the depth of cut large abrasive cutting edge wear increases, whereas wheel easy to plug.
5) Wheel hardness greater impact on congestion, high hardness, high thermal conductivity wheel is not conducive to surface cooling, but is conducive to improve the precision and durability.
6) Wheel selection is an important characteristic portable belt concentration, its grinding efficiency and processing costs have a significant impact, affect the efficiency of the concentration is too low, whereas abrasive easy to fall off, but the best combination of optimum concentration range.
2013年9月21日星期六
spunlace nonwoven spunbond bicomponent microfiber technology and application
Hollow orange flap-component spunbond spunlace non-woven microfiber is a new two-component microfiber nonwovens, it is not only in the fiber composite spinning technology and spunbond nonwovens technology together, and the use of spunlace non-woven fabric strip technology, the Abrasive paper hollow orange flap-type composite microfiber polyester and nylon filament fiber opening, consolidation, do not need to go through spinning, weaving, you can once into cloth. It is a multi-disciplinary, multi-professional product, which combines two spunbond and spunlace nonwoven product benefits and technical advantages as a whole, a new generation of non-woven fabric grafted innovative R & D of high-end products.
Hollow orange flap-type two-component spunbond nonwoven spunlace process is in its main component spunbond nonwoven spunlace stripping technique used in a hollow orange flap microfiber filaments postmenopausal Road spunlace, completed fibrillation, consolidation, forming a two-component spunbond spunlace nonwoven fabric.
Currently, two-component microfiber nonwovens technology mainly to island and orange petal type-based, sea-island microfiber nonwoven technologies are divided into fixed and fixed-island island type two, its principles are based on island staple fiber (PA6/PE or PET / COPET) as raw Sanding disc material, carded, needle craft made of non-woven fabric, and then extracted with toluene or base reduction will be one component dissolved, then, the production surplus fine fiber nonwoven fabric. This process is not only a long process, device configuration complexity, but also more serious environmental pollution, in addition, 30% of the raw material but also impaired, resulting in a great waste.
The use of orange petal-type polyester / nylon composite microfiber nonwovens technology, especially the use of hollow orange flap-type conjugate spinning spun into cloth once + spunlace method, compared with orange flap composite short fibers (polyester / Jin complex), carded into a web, then the chemical, physical treatment, so that splitting, peeling, fine fiber nonwoven fabric to obtain a method, short process, reducing the considerable amount of process equipment, and greatly reduces the equipment operating costs.
This project is the use of a hollow orange flap-type two-component spunbond filaments, after conjugate spinning cooling, high-speed air after stretching, a silk shop network via fiber spunlace open, after ceramic flap disc consolidation, made of microfiber no woven fabrics. Spunlace microfiber filament fiber opening, the single fiber up to 0.075D, this non-woven fibers woven into the texture and woven fabrics, knitted similar dense fiber structure, large surface area, moisture absorption and permeability Good.
Brushed probably roll production methods are the following
A direct tufting
It is the oldest one way is to abrasive filaments planted directly in the grinding roller, although a high strength can be achieved, but the high cost of tufting, and can not be partially standard abrasives replaced.
2, coiled
Is abroad a growing hair way, made the abrasive wire may be wound on a metal bar, and then wrapped around the sanding roller. Sanding roller according to the length of custom, but because the abrasive filaments of the metal strip on the card, it will lead to the phenomenon of spinning, strength is not high.
3, Nylon
Although you can easily create, but also the problems that occurred up to a kind of nylon nylon thermal expansion and ceramic belt contraction will lead to longer, both ends of the roller body is brushed nylon rollers grow withstand machine; bristles planted with saddle stitching , the intensity is not high, the easiest hair removal; nylon nylon sleeve thermal expansion and contraction can lead to bursting, so that the whole sanding roller scrapped; nylon for strength is not high, can not increase planting density .......
4, aluminum brush plate - new sanding rolls
Is the world's most advanced sanding roller, brush plate produced by splicing 20cm, can be customized any length of mini flap disc brush roll; high-strength aluminum alloy substrate allows the highest density tufting, and produced with the most cutting-edge tufting technology to ensure do not shed, but not as nylon produce crack, variable-length phenomenon; balancing the roller body is doing the best. Most importantly, this approach truly rapid change, rapid trim, infinite.
2013年9月17日星期二
bevel cutting machine
According to the traditional technology, production welding elbow, the first use of thin metal or cardboard to make an expanded model, and then the model Yi cover plate or tube, and draw the cut line, then cutting stock, the last group, welding forming . This method of production Elbow time consuming and expensive materials, but also crossed and hand-cut margin of error, it is difficult to guarantee the quality of the workpiece. To this sanding paper roll end, we have developed an elbow bevel cutting machine. 1 works a cross-M-M intersects the tube, with the angle of the axis O-O a, cut along the cross section, will be one of the Node B 18 of rotation, A, and B can be composed of two bends. shown in Figure 1. Rotary elbow angle. Mouth cut, two. Machine shown non woven abrasive in Figure 2. It consists of eight torch, cutting disc 12 can be transferred, 'angle control panel 13, T-bolts 14. Clamping seat 16 and the V-shaped block 17 and other components. Angle control disk 13, and can be transferred between the cutting disc 12 with three T-bolt 14 is fixed. Being able to rotate the cross-section tube bevel bevel cut with a cross section two. (2) use of high cutting distance determined, until the cutting. Temporary "cutting, hand rotating cutting disk 12, should always observe the torch flame vary between 8 Nicked uniform motion. Cutting is nearing completion, the Bonded abrasives person standing on the side to prevent the cutting section fall injury. Rotary elbow bevel cutting machine production should pay attention to the angle control panel 13 and the rotatable disc 12 the distance between the cutting should not be too large, in order to reduce the deviation angle of rotation. Angle of the control panel 13 on a T-shaped groove in the sliding bolt 14 mounted on the T-shaped rear
cutting machine cut bricks
Salt bath furnace heat treatment plant is now generally use the Quick Start new approach; electrode arrangement complicated than before. This is Andrew, furnace repair often encountered in different shapes and sizes out cat refractory bricks used because the small number of portable belt furnace repair may well be the next to use another size, so you can not custom processing. Initially furnace repair, we use Fei child tick, hacksaw sawing, grinding wheel machining methods such as bricks, very cumbersome, resistance. Brick waste, without rules, affecting the quality stove. To this end, we have worked out in practical work using all the bricks cut down machine method, the test cut out bricks are the rules, in full compliance with size requirements, the cutting disc yield of 100%. Use this method should pay attention to. (A) before cutting bricks, press size requirements in the brick on the dash, and then use the bricks central activity shovel mouth tight before cutting, sheet is not tight, easy to damage the cutting discs, an accident · (2) before cutting The bricks soaked in water for a little longer cut, otherwise, it will generate a lot of powder, pollute the environment. Cutting machine cut bricks, the method is simple, saving time and labor, high yield, furnace repair units Bonded abrasives worth a try. Using cutting machine cut bricks salt bath furnace heat treatment plant is now generally use quick launch new methods, electrode arrangement complicated than before. Thus, furnace repair often encountered in different shapes and sizes of bricks required, due to the small number used in the next repair imitation may well be to use another size, so you can not custom processing. Initially furnace repair, we use the chisel tick, hacksaw sawing, grinding wheel and other processing methods bricks ......
2013年9月16日星期一
Some grinding machine also in the grinding process
Two kinds of single-disc and double-disc, double-disc grinding machine with the most common. In the double-disc grinding machine (see [double disc grinding machine]), a plurality of workpieces simul roloc disc taneously be placed in the upper and lower lapping plate inside the cage between the cage and the workpiece driven by the eccentric or planetary bodies for movement parallel to the plane . Lower lapping plate rotation, parallel to the grinding disk can not turn, or reverse rotation of lower plate, and move up and down to compress the workpiece (pressure is adjustable). In addition, the grinding plate can rotate around the column with the arm at an angle for loading and unloading workpieces. Double disc grinding machine mainly used for processing two parallel planes, a plane (the need to increase compression artifacts attachments), cylindrical cylindrical and spherical (used with a V-shaped groove grinding disc) and so on. Processing outer cylindrical surface, because it is abrasive cloth belt necessary to slide the workpiece rolling again be a reasonable choice retainer hole slot type and arrangement of angles. Only a single-disc grinding machine under the grinding discs, grinding the workpiece for the next plane, enable workpieces of varying shapes and sizes with disc machining, grinding accuracy. Some grinding machine also in the grinding process with automatic correction non woven flap wheel mechanism abrasive discs.
Shaft grinding machine consists of forward and reverse rotation of the workpiece spindle drive or lap (adjustable grinding ring or grinding rod) rotates, the structure is relatively simple, for grinding cylindrical cylinders.
Special grinding machine according to the type of workpiece to be polished, a center hole grinding machine, ball mill and a gear grinding machine and so on. In addition, there is a centerless grinding principle similar centerless grinding machine for grinding a cylindrical workpiece.
abrasive belt grinding characteristics
Accumulation of abrasive belt in recent years, the emergence of a new type of grinding tool with high grinding efficiency, grinding, stable performance, precision grinding and long service life, etc., so they can meet a variety of high-density material and metal abrasive paper sheet alloy grinding and polishing, precision grinding is the tool of choice.
Second, the accumulation of abrasive belt grinding characteristics
1, the special grain structure
Stacking abrasive belt from the exterior is constituted by a series of coarse grains, and virtually every large number of fine grains are made of alumina or silicon carbide abrasive material, the abrasive particles through high-strength adhesive firmly attached to the substrate, and the fine abrasive particles are randomly arranged, so that the whole process Mounted flap wheel of grinding particles are worn little by little, a random residual sand off, exposing new abrasive continue to complete work, a multilayer improved abrasive grinding belt service life, this multi-level continuous grinding operation method greatly superior to conventional electrostatic planting plant sand sand or gravity, etc., distributed on the abrasive surface of the substrate layer to form a unified arrangement of sand surface to to achieve the purpose of grinding.
2, a new concept of self-sharpening
Stacking abrasive belt is composed of many fine powders accurate dimensions, by making bonded together to form a large need for abrasive particles, and then through the sand advanced electrostatic planting technology, the abrasive evenly "planted" in the specially treated substrate The refining of a high-strength belt, which can be like abrasive as in the grinding process blunt abrasive action of the centrifugal force continuously off, thereby exposing the new sand, which can stably be workers.
3,1-3 times lifetime
Stacking the abrasive abrasive belt polymerization, so that the abrasive grinding unit area more participants, thus extending the Sanding Sheets service life. General stacked abrasive belt life is 1-3 times of ordinary belt. Belt long life, thus reducing the number of frequent replacement belt sander and adjustment, saving time, but also to avoid fluctuations in the quality of workpiece, improve processing efficiency and quality of the workpiece to ensure product quality stability, reliability.
4, good quality grinding
And accumulation of abrasive belt abrasive belt grinding effect comparison, we see that accumulation of abrasive products abrasive grinding surface roughness of the workpiece with the grinding time, after relatively stable. While ordinary abrasive products grinding the workpiece surface roughness of the front varied. This shows that the accumulation of abrasive belt, grinding surface effect is more stable, better consistency.
5, low grinding heat
Moment of grinding temperature and concentrated in the surface layer of a local area, the surface will cause local changes in microstructure, form grinding burn. Burn-in phenomenon will cause decreased mechanical properties of the surface, reducing the hardness of the workpiece and durability, reduce the life of the workpiece. Of abrasive belt, with the grinding time, the abrasive grains continue to be blunt, and can not self-sharpening, grinding and thus the state changes gradually sliding friction of the cutting condition, resulting in grinding zone temperature rise, resulting in surface burns ; The accumulation abrasive belt, abrasive due to the accumulation of multilayer effects in the grinding process will continue to fall off, exposing new sharp sand, so that the entire process is cutting the state, to avoid generating excessive surface grinding heat while shedding abrasive, but also take away a lot of grinding heat and chips, to ensure the quality of the workpiece surface.
2013年9月15日星期日
abrasives will put forward higher requirements
Throughout the grinding areas of development, the future will be grinding abrasives, higher demands, to judge from the current situation, superhard grinding precisely to meet these abrasive disc new needs. If CBN abrasives with good thermal stability, high hardness, good wear resistance and other characteristics, so the abrasive grinding processing line speed, high grinding efficiency, grinding life is also high, especially suitable for processing high-speed steel, bearing steel , stainless steel, chilled cast iron and other ferrous metals.
Superhard abrasive applications, mainly refers to the metal powder, metal oxides or other superhard material CBN as a grinding wheel filler to resin, ceramic or metal binding agent made of abrasive applications. Currently, the superhard abrasive polished film brings precision, high efficiency grinding effect has been widely recognized.
Emergence of new abrasives, such as ceramic belt micron polycrystalline ceramic abrasive ceramic composition containing fine diamond grit abrasive shell, ultra-precision polishing polyester film tape and so on. These new abrasives possess characteristics that make grinding advantages vividly demonstrated.
In addition, to meet the various needs of vitrified grinding wheels, large pores and the different processing surface speed wheel different abrasive wheel, polished film, diamond saw blade so as technology advances will expand the application range of grinding to become a mainstream product.
Abrasive products are mainly divided abrasive corundum
carbide abrasive two categories, specifically, there are basically the following: corundum abrasive, the main component of Al2O3, with medium hardness, toughness, particle Fengrui, relatively inexpensive, suitable for machining high tensile strength of the metal. Microcrystalline corundum abrasives and black corundum abrasives are its derived varieties; corundum abrasive, slightly higher than the hardness of corundum, but poor paper disc toughness, easy to cut into the workpiece during grinding, good self-sharpening, less heat, grinding ability, and high efficiency. Chromium corundum abrasive is its derived varieties.
Another crystal corundum abrasive material particles are composed of a single crystal, and has a good polygonal cutting edge, high hardness and toughness, grinding ability, less grinding heat, the disadvantage is the high cost of production, lower yield, so the price is relatively high, zirconium corundum abrasives is crystalline compound, slightly lower hardness, crystal size is fine, good wear resistance; black silicon carbide abrasive, green silicon carbide abrasive, cubic silicon carbide abrasives, silicon carbide abrasive cerium , is silicon carbide abrasive, the nonwoven belt main ingredient is silicon carbide SiC, high hardness, brittleness, sharp abrasive grains, good thermal conductivity, wear resistance stronger, more suitable for processing brittle metals and non-metallic products.
Abrasives and abrasive products typically include superhard abrasive material into two categories: ordinary abrasive refers to the ordinary abrasive made of abrasive. Press abrasive combined into the velcro disc form of bonded and coated abrasives, while the binding agent can be divided into different ceramic abrasive, abrasive resins, rubber, abrasive, magnesite abrasive series; superhard abrasive material , mainly in the metal powder, metal oxides or other superhard material CBN as a filler, may also be appropriate to add ordinary abrasive (such as Al2O3, SiC, etc.), binding agents or with resin or vitrified abrasive made of a metal binding agent .
2013年9月13日星期五
parsing abrasive market developments
Energy saving, clean production will show in the abrasive industry production areas, in addition, the state machinery, shipbuilding, automobiles, aircraft and other areas of policy will also abrasive significant impact on the development of production. Abrasive enterprises sanding roll should technological innovation and new product development direction to seek a breakthrough, the development of high-end abrasive products and reduce dependence on imports. Next five years, angle grinding abrasives industry fundamentals will also become the country's economic policy tone.
Angle grinding abrasives products as an integral part of industrial production and processing consumables, also commonly referred to as industrial supplies. Abrasives used are wide-ranging, most of the Bonded abrasives industrial production will use to industrial processing, industrial abrasives known as dental reputation. Abrasives product features are only two, one cut two polished. Related to industries, including machinery, equipment manufacturing, automobile polish, furniture polish, etc.
As China's economic development, businesses have a great degree of progress, but also stimulated the development of abrasives industry, however abrasives industry development has also exposed some problems, technical product innovation, product energy conservation and other issues are restricting the abrasives industry. Abrasives industry threshold is low, which created a whole industry is fragmented mess, there is no uniform production quality standards.
Experts believe that to maintain the abrasive industry healthy and orderly development, also need to address the non woven flap wheel following aspects: production capacity of decentralized, small-scale, low efficiency, the current structure of abrasive scale enterprises are still quite reasonable, industry set low and small enterprises still account for a large proportion; new product development capacity is weak, the domestic abrasive products are mainly set the low end, low-tech products, and the lack of high-end technology products, mainly rely on imports, only to meet the automotive, aerospace, machine tool , bearings, locomotives and ships and other industrial needs about 1/3; overcapacity, low-grade product homogeneity serious, its alumina production is particularly prominent.
What causes an abrasive wear
(A) What is the abrasive wear
Abrasive wear is due to a friction surface of the convex part and the other hard-surface contact between the friction surface or both the hard particles exist in the event of relative movement of the Abrasive paper two surfaces of the one surface or both surfaces of the material is transferred signs of wear. (Two) abrasive wear mechanism
The abrasive surface of the part relative movement, the force on the abrasive can be decomposed into a component force perpendicular to the surface of the force parallel to the surface.
1 perpendicular to the surface embedded in the surface of the abrasive component, good material for the plastic surface indentation large dense, repeated action, resulting in fatigue and damage, the brittle materials do not produce distortion on the surface of brittle fracture.
(2) parallel to the surface of the abrasive component tangential movement generated, resulting surface is scored, and the cutting groove is left, the plastic material, the abrasive cutting surface of the friction will cut a chip.
For brittle materials, abrasive cutting once cut from the surface of a lot of debris.
Abrasive wear rate is very large, many major damage in the form of machinery and equipment. (C) the main factors affecting abrasion
1 abrasive particle size effect on the cutting and grinding disc amount of wear
Abrasive wear of the metal with the increase of the size, when the abrasive size increases after a certain size, the wear rate is constant.
(2) the geometry of the abrasive wear of the
Sharp angular abrasive abrasive wear than the sleek, high-speed, abrasive be blunt, the wear rate of decline, if the abrasive is ground, the grinding speed will increase.
3 Abrasive effect of hardness on the amount of wear
Thus, the enhanced surface hardness of the part approaches or exceeds the hardness of the abrasive, to improve the wear resistance of parts, but the high hardness of the material, will cause decrease in toughness, increased brittleness and other consequences. (1) Abrasive hardness is lower than the hardness components, the wear amount of the difference in hardness between the two, the difference increases, the wear rate decreases. (2) slightly higher than the hardness of abrasive hardness parts, then wear serious, reduce the difference between the hardness and wear is reduced. Thus, the enhanced surface hardness of the part approaches or exceeds the hardness of the abrasive, to improve the wear resistance of parts, but the high hardness of the material, will cause decrease in toughness, increased brittleness and other consequences.
4 Pressure effect on wear
Against abrasive wear, the wear rate is proportional to pressure on parts made of the same material, the pressure reduced by half, increasing life expectancy doubled. (Four) measures to reduce abrasive wear
1 to reduce the entry of abrasive
Such as configuring various filters, increase the non woven flap wheel dust seal means mounted to a magnet, crumb room and oil pollution indicator, often clean replacement air, fuel, oil filtration devices. 2 Enhanced abrasion resistance of parts
Heat treatment and surface treatment method to improve the properties of the part material, increasing the surface hardness than the hardness of the surface as the hardness of the abrasive.
3 selection of good wear resistance of the material
Parts are made of carbon steel for quenching, tempering, get martensitic steel parts with both approaches can wear, but also has good toughness. Abrasive wear will not only damage the machinery and equipment, but also reduce the life and efficiency of abrasive, abrasive production base metals as China Shandong Kai Tai Group Co., Ltd. not only provide you with high quality metal abrasive, but also to provide customers with full azimuth solution, the following is a summary of Shandong Kai Tai finishing abrasive wear of the main factors and preventive measures.
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