2014年1月20日星期一

Abrasive abrasive manufacture more and more attention

 In recent years, the rapid development of China's mold industry, mold industry has changed from subsidiary industries dependent on imports towards independence of the new industries. Abrasives as mold production process consumables, demand in the coming years, and its application in the production process of concern. On the status of corporate mold: mold PINEZONE Bonded abrasives  industry has a relatively broad market prospects, but on the current development of mold companies, due to the financial crisis, the domestic economic downturn and other factors, domestic and foreign orders significantly reduced, given the very low price Most of the mold is difficult to sustain their livelihoods. Plus a variety of costs rising again, a majority of companies have mold face closure.
  When super abrasive grinding wheel, angle grinding a dry or wet milling. But the use of wet grinding, can prolong wheel life, but will also prevent the workpiece grinding burn.
  Different grinding fluids, grinding wheel ratio will differ several times, even 10 times. Wheel mechanical abrasion, chemical attack and thermal injury during grinding is closely related with the cooling effect. Wet grinding with CBN wheel but be noted that due to water vapor PINEZONE cut off wheel  together with CBN at high temperature and the oxygen in the air from the reaction of ammonia and boric acid (BN +3 H2O → H3BO3 + NH3), this hydrolysis reaction is called, will accelerate wheel wear.
   Therefore angle grinding oil or used water-soluble solution with extreme pressure additives to weaken hydrolysis in use. When wet grinding grinding wheel grinding fluid with different relative CBN grinding wheel life is different to the pure oil cooling of the longest wheel life, water-soluble oil-cooled wheel life, followed by cooling water additives plus rust wheel life minimum.
  Grinding wheel with resin binders, metal, ceramic, plating and brazing. Resin bonded grinding wheel is mainly used for measuring blade sharpening, grinding holes, cylindrical grinding and surface grinding; metal bonded grinding wheel for cutting, shaping optical curve grinder grinding, sharpening single-blade knives, grinding small drill spiral grooves, also  PINEZONE portable belt applies to the electrolytic grinding; high grinding efficiency of vitrified grinding wheels, good shape retention, durability, ease of repair, wheel long life, and because of vitrified itself has good chemical stability, heat, oil, acid erosion, can be adapted to a variety of grinding fluids, grinding low-cost, efficient and thus has become the preferred abrasive precision grinding; plating and forming grinding wheel suitable for high speed grinding, also suitable hole efficient grinding (wet milling) and use the jig grinder; brazed grinding wheel for ultra-high speed.

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