Abrasive: White corundum has good cutting performance and self-sharpening, suitable for grinding martensite and martensitic + ferritic stainless steel; single crystal corundum abrasive is suitable for grinding austenite and austenite + ferrite body
Stainless steel; microcrystalline corundum abrasive is composed of many tiny crystals, with high strength, good toughness and self-sharpening. , which can reduce the phenomenon of burns and burrs, and can reduce the surface roughness of grinding. It is suitable for grinding all kinds of stainless steel; the cubic boron nitride abrasive has high hardness, good thermal stability and high chemical inertness. ℃ does not oxidize, the edge of the abrasive particles is not easy to become dull, and the grinding heat generated is less, which is suitable for grinding all kinds of stainless steel. In order to reduce the adhesion phenomenon, grinding wheels with silicon carbide and synthetic diamond as abrasives can also be used.
Grain size: When grinding stainless steel, it is generally advisable to use 36, 46, and 60 medium-grained grinding wheels. For rough grinding, 36 and 46 grains are used, and 60 grains are used for fine grinding. In order to be suitable for both coarse and fine grinding, a 46 or 60 grit is used.
Bonding agent: Grinding stainless steel requires high strength of the grinding wheel in order to withstand large shock loads. The vitrified bond is heat-resistant and corrosion-resistant. The grinding wheel made of it can maintain the cutting performance well, is not afraid of moisture, and has porosity. It is suitable for making a bond for grinding stainless steel grinding wheels. When grinding the inner hole of materials such as concentrated nitric acid resistant stainless steel, resin bond can be used to make grinding wheel.
Hardness: Grinding wheels with lower hardness should be used to improve self-sharpening. Grinding wheels with G-N hardness are generally used, among which K-L is the most commonly used. For internal grinding wheels using microcrystalline corundum as abrasives, J hardness is appropriate.
Organization: In order to avoid the blockage of the grinding wheel during the grinding process, the structure of the grinding wheel should be looser, and it is generally suitable to use No. 5 to No. 8.