ABRASIVES:A Few Basic Knowledge Can Make A Big Difference

Abrasives are a general term for abrasives and abrasives, including abrasive products and abrasive products.

 

Abrasive products are mainly divided into two categories: corundum abrasives and silicon carbide abrasives. Specifically, there are basically the following types：

 

1.Brown corundum abrasive

 The main component is Al2O3, which has medium hardness, high toughness, sharp particles, relatively low price, and is suitable for       processing metals with high tensile strength. Microcrystalline corundum abrasives and black corundum abrasives are both derivatives.

 

2.White corundum abrasive

Its hardness is slightly higher than brown corundum, but its toughness is poor. It is easy to cut into the workpiece during grinding. It has good self-sharpening, low heat generation, strong grinding ability and high efficiency. Chrome corundum abrasive is its derivative.

 

3.Single crystal corundum abrasive

Its particles are composed of a single crystal and have good multi-edge cutting edges, high hardness and toughness, strong grinding ability, and low grinding heat. The disadvantage is that the production cost is high and the output is low, so the price is relatively high. . Zirconium corundum abrasive is also a crystal compound with slightly lower hardness, finer crystal size and good wear resistance.

 

4.Silicon carbide abrasives

Black silicon carbide abrasives, green silicon carbide abrasives, cubic silicon carbide abrasives, cerium silicon carbide abrasives, etc. belong to silicon carbide abrasives. The main component is silicon carbide SiC, which has high hardness, high brittleness, sharp abrasive grains, good thermal conductivity, and wear resistance. Stronger, more suitable for processing hard and brittle metal and non-metal products.

 

Abrasive tools usually include two categories: ordinary abrasive tools and super-hard material abrasive tools.

1.Ordinary abrasives refer to abrasives made of the above-mentioned ordinary abrasives

According to the abrasive bonding form, it can be divided into bonded abrasives and coated abrasives, and according to different binders, it can be divided into ceramic abrasives, resin abrasives, rubber abrasives, abrasives and other series.

2.Superhard material grinding tools

Mainly using superhard materials such as metal powder, metal oxide or CBN as fillers, ordinary abrasives (such as Al2O3, SiC, etc.) can also be added appropriately, and abrasive tools made of resin bond, ceramic bond or metal bond.