The main features of abrasive

The main features include abrasive abrasive, grain size, hardness, structure and bonding agent five factors. Depending on the choice of the appropriate applications can directly improve the processing quality and productivity.
1 Abrasive
Abrasives are used for abrasive corundum, white corundum, silicon carbide and green silicon carbide. Corundum high toughness, suitable for grinding carbon steel, alloy steel, malleable iron and hard bronze high tensile strength of the material. Corundum has a higher hardness than corundum, cutting performance is better, for hardened steel, high carbon steel, high speed tool materials such as grinding process; black silicon carbide, high hardness, brittle and sharp, suitable for grinding, Cut low tensile strength of the material, such as: cast iron, glass, ceramics, stone, refractory materials, etc.; darker green silicon carbide high purity silicon silicide. Suitable for grinding carbide, optical glass, precious stones, agate and other hard and brittle materials.
2 Granularity
The choice depends on the particle surface of the workpiece machining accuracy and productivity requirements. Coarse-grained and medium-grained abrasive for roughing and semi-finishing, and fine-grained abrasive, it applies to finishing and super finishing. Physical and mechanical properties are grinding department also factors that determine particle size, low hardness, ductility and toughness of the material is appropriate to coarse-grained abrasive machining, high hardness brittle materials appropriate to fine-grained abrasive.
(3) Organizational
Organization refers to the abrasive grinding composition of the abrasive, bond and porosity volume ratio between the three. Less abrasive, large porosity called loose tissue, otherwise tightly organized. Tightly organized abrasive, should be used for grinding, profile grinding and processing remain small while the surface finish of the workpiece; moderate organization is widely used in the general allowance abrasive grinding work piece; loose abrasive organizations apply in the plane of the inner circle and other large contact surface grinding and grinding expansion sensitive soft material of the workpiece and the workpiece.
4 Hardness
Abrasive abrasive surface is fixed to the strength of the binding agent. Or under external force, the degree of difficulty shedding, known abrasive hardness.
Points, with natural and artificial abrasive abrasive categories. Commonly used in machinery industry is only natural abrasive Whetstone. Artificial abrasive characteristics according to the basic shape and structure of the distinction between a grinding wheel, grinding, stone, sand tile and coated abrasives five. In addition, it is customary also put abrasives abrasive as a class.
In addition to grinding and other metal processing machinery manufacturing industry has been widely used, but also for food processing, paper industry and the ceramics, glass, stone, plastic, rubber, wood and other non-metal materials processing.