1. Classification of abrasive wheels
Abrasive disc can be divided into ordinary abrasive (corundum and silicon carbide, etc.) grinding wheels, natural abrasive super-hard abrasives and (diamond and cubic boron nitride, etc.) grinding wheels according to the abrasives used;
2. Diamond wheel
Diamond abrasives are used as raw materials, and metal powder, resin powder, ceramics and electroplated metal are respectively used as bonding agents. The round consolidated abrasives with a through hole in the center are called diamond grinding wheels (alloy grinding wheels). The structure of diamond grinding wheel is generally composed of three parts: working layer, matrix and transition layer. The working layer, also known as the diamond layer, is composed of abrasives, bonding agents and fillers, and is the working part of the grinding wheel. The transition layer, also known as the non-diamond layer, is composed of bonding agent, metal powder and filler. It is the part that firmly connects the diamond layer to the substrate.
3. Stainless steel abrasive disc
inox grinding disc is best cut off wheel for hardened steel. As everyone knows, stainless steel is a relatively hard material, and it is very difficult to cut it off.
The characteristic parameters of the grinding wheel mainly include abrasive, viscosity, hardness, bonding agent, shape, size and so on.
4. Abrasive cut off Model
The specifications are written on the trademark, and words such as A30Q4B can be seen on the printing. This shows a lot of things. First of all, A represents the abrasive brown corundum, and there are other abrasives such as WA white corundum and BA black corundum. The 30 behind A represents the particle size. The fine particle size is smoother, and the surface roughness is lower, but the grinding speed is slow; the coarse particle size has a larger surface roughness, but the grinding speed is faster. Q stands for hardness. 4 represents the organization number. The thickest BF stands for resin bond.
5. Abrasive cut off specifications
Grinding wheels have different shapes and sizes, which are suitable for different grinding processes. The grinding wheel is subjected to great centrifugal force when it rotates. If there is not enough strength, the grinding wheel will burst and cause serious accidents.
The size of the centrifugal force is proportional to the square of the peripheral speed of the grinding wheel, so when the peripheral speed of the grinding wheel is increased to a certain value, the centrifugal force will exceed the allowable range of the strength of the grinding wheel, causing the grinding wheel to burst, so all kinds of grinding wheel are specified In order to achieve a safe working speed, the speed must be much lower than the bursting speed of the grinding wheel. The safe working speed of the grinding wheel is marked with the highest working speed on the grinding wheel, and its safety factor is 1.5
