the large pores of the grinding wheel

Large pores wheel production ranges are: abrasive silicon carbide and corundum and other general options, such as the commonly used green silicon carbide (GC), black silicon carbide (C) and corundum (A), corundum (WA), such as several of these brittle and sharp abrasive, high hardness, good thermal and electrical conductivity; abrasive particle PSA sanding disc  size (36 # ~ 100 #); binding agent (usually a ceramic binding agent); Hardness (G ~ Q levels); shape (with flat-shaped, concave, cup, bowl or dish, etc.); pore size (approximately 0.7 to 1.4 mm).
Some grinding through a special, the internal porosity of the grinding wheel increases, so to processing requirements. This product choice should note the following:
 First, because the large pores in the grinding wheel with high durability, cutting ability and can not easily be  sandpaper roll blocked, etc., it is more suitable for grinding metal and leather, rubber, plastic and other non-metallic materials and coarse grinding.
 Second, at the same time, but also because it has a fast heat dissipation characteristics, so in grinding large number of heat-sensitive materials, thin-walled workpieces and dry milling process (eg rail grinding carbide cutting tools and machine tools, etc.) with good results.
 Third, the large pores of the grinding wheel and other general vitrified grinding wheel basic method for  file belt producing the same. Difference is in the amount of the ingredients plus a pore agents, it volatilizes completely before sintering the wheel or burned ash, resulting in large pores.