Selection of grinding wheel characteristics and types of grinding wheel in surface grinder processing:

As the tool of grinding machine, the correct selection of grinding wheel is very important for grinding. According to the abrasive, it is divided into ordinary abrasive grinding wheel and superhard abrasive grinding wheel.

1. Common Abrasives corundum and silicon carbide

Corundum is divided into: brown corundum a

Tan. Grinding carbon steel and general alloy steel, malleable cast iron, etc

White corundum WA

White. The cutting performance is 30? Higher than that of brown corundum?, Workpiece deformation and grinding heat are also small. It is used for fine grinding hardened steel, high-speed steel, high carbon steel, etc

Chrome corundum pa

Pink. The hardness is close to that of white corundum, the toughness is slightly higher, and the durability is 20? Higher than that of white corundum?, In the same case, the surface roughness is also higher, the workpiece is not easy to burn and crack, and the shape of the grinding wheel remains good, which is suitable for forming grinding.

Microcrystalline corundum Ma

Similar to white corundum in appearance, it is suitable for grinding stainless steel, bearing steel and nodular iron, especially for heavy load grinding.

Single crystal corundum SA

Blue gray. Single crystal, strong cutting ability and low cutting heat. It is suitable for grinding hard grinding materials with high hardness and metal materials sensitive to high temperature. Such as high vanadium high speed steel, heat resistant alloy steel, stainless steel, etc.

Zirconium corundum ZA

Dark brown. It is commonly used for rough grinding, heavy load grinding, rough grinding of cast iron, cast steel, stainless steel and other materials.

Silicon carbide is divided into black silicon carbide C

Black. The hardness is higher than that of corundum abrasive. It is suitable for grinding HT, ore and refractory materials.

Green silicon carbide GC

It is mainly used for grinding cemented carbide and cutting tools, thread grinding and fine grinding of other tools.

2. Superhard abrasives are divided into cubic boron nitride CBN

The hardness is second only to diamond, with good wear resistance and conductivity and low calorific value. It is used for grinding hard machining materials such as cemented carbide, stainless steel and high alloy steel.

Synthetic diamond: MBD

High hardness, poor toughness and high price. It is used for metal and non-metallic hard and brittle materials with low iron content that are difficult to be processed by ordinary abrasive tools, such as cemented carbide, optical glass, agate gem, semiconductor materials, stone, etc. It is not easy to process metal materials with high iron content, otherwise diamond itself is easy to produce strong chemical reaction.