Grinding wheel selection principle is

  Selection principles are: ① grinding steel, the selection of corundum grinding wheel, grinding hard cast iron, alloy and non-ferrous metals, the selection of silicon carbide grinding wheel. ② grinding of soft materials, the selection of hard grinding wheel, grinding hard materials, the choice of a soft wheel. ③ grinding soft and tough material, the selection of coarse abrasive (such as 12 ~ 36 #); grinding hard and brittle material, the selection of fine abrasive (such as 46 to 100 #). ④ polycrystalline diamond surface roughness requirements are lower, the selection of fine grain, high metal removal rate requirements, the selection of coarse grains. ⑤ requires good surface quality, the choice of binder resin or rubber wheel,  abrasive grinding  maximum metal removal rate, the selection of vitrified sand. Coarse-grained abrasive for grinding: 1) material is relatively soft, elongation and similar soft iron and non-ferrous metals and other materials. 2) feed volume, high grinding efficiency requirements of the occasion. 3) Surface roughness less demanding situations. 4) grinding a large contact surface of the occasion. Fine-grained abrasive for grinding: 1) high hardness and similar high carbon tool steel, carbide a metallic material and glass and other brittle materials. 2) Surface roughness and high precision applications. 3) small contact surface grinding occasions. 4) a small curvature radius of the workpiece or the occasion.