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Stainless steel grinding wheel selection
2012-09-18 by seoer10
The correct choice of the amount of the grinding wheel and grinding, is the main way to solve the difficulties of grinding stainless steel.
Selection of abrasive wheels
White fused alumina has a better cutting performance and self-sharpening, suitable for grinding martensite and martensite ferritic stainless steel; toughness and hardness of single crystal corundum white corundum, suitable for grinding austenitic austenitic + ferritic stainless steel; microcrystalline corundum self sharpening, easy to get sharp micro edge, high strength, good toughness, suitable for grinding stainless steel, can reduce galling, burns and reduce the grinding surface roughness value. Grinding stainless steel bore grinding wheel diameter, each grain participate cutting times, easily blunt, microcrystalline corundum or monocrystalline corundum better. Selection of zirconium corundum grinding wheel effect is also very good, not only the grinding efficiency is high, and the workpiece is also not easy to burn. Off stainless steel grinding Albright, in order to solve the serious adhesion problems of the grinding wheel, also brittle and sharp silicon carbide grinding wheel or synthetic diamond grinding wheel can be used to improve the efficiency of grinding. Cubic boron nitride (CBN) wheel when grinding hardness greater than 275HBW martensitic stainless steel should be used.
The size of the abrasive particle size, surface roughness of stainless steel processing has a direct impact. Usually fine grained grinding wheel, enables after the grinding surface roughness value is smaller. But because of the toughness of stainless steel, the use of fine-grained grinding wheel, abrasive dust easily adhere to blockage of the flap wheel lose cutting ability, and easy to make the surface of the workpiece nap, and thus should be used in the coarse-grained grinding wheel. The influence of particle size on the degree of adhesion of the wear debris are shown in Table 01. Can be seen from Table 01, all the more fine grit size, the more serious adhesion phenomena. Practice has proved that the grinding of stainless steel, generally to the medium grain size number (# 36, # 46, # 60) of the wheel is appropriate. The kibbled use 36 # 46 # 60 # fine grinding. Sometimes in order to be used for both coarse and fine grinding, the grinding wheel 46 # or 60 # granularity. Inner circle and face grinding wheel and workpiece contact arc, should use the coarse granularity of the grinding wheel.
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