Resin cutting cutting blade problems and solutions

How to choose the maximum speed of the device according to the diameter of the cutting piece and the maximum line speed?
answer:
According to the American standard EN12413, the same diameter of the low price disc for metal, for the different maximum line speed, the corresponding maximum safe use speed is also different, the specific data see the table below, you can choose the corresponding equipment. If the speed of the device can be adjusted, it is necessary to adjust the speed of the device according to the maximum line speed of the cutting piece to ensure that the cutting piece is used at the highest safe use speed.

02
How to choose the 5 inch resin cutting disc for metal for the grinding of ductile iron and non-ferrous metal casting parts?
answer:
Polished ductile iron casting workpieces are mainly used to remove the mixture of foundry sand and bulk material on the surface of the casting, and the ductile iron has a high carbon content. These factors are destined to produce fine grinding metal shavings during grinding, which will block the pores of the cutting piece, resulting in clogging of the cutting piece. Slip. Therefore, the optimal choice is to use silicon carbide as the abrasive for the cutting piece. The silicon carbide abrasive has good self-sharpness. During the grinding process, the metal grinding debris will fall off with the breaking of the abrasive, and it is not easy to block.

The melting point of non-ferrous metals is low, and the heat generated during grinding causes the metal chips to melt and stick to the surface of the ordinary cutting piece, and the hardness of the non-ferrous metal is low, so that the ordinary cutting piece cannot be polished after being self-sharp. The special cutting piece for non-ferrous metals uses special bonding agent, which will cause the abrasive to fall off at low temperature, take away the grinding debris, and reduce the temperature of the grinding zone, such as the special cutting piece of Fulavit non-ferrous metal.

03
How do you get different workpiece surface roughness using the same cutting piece?
answer:
When the same cutting piece is polished, the roughness of the workpiece is the same, but different surface roughness can be obtained by different grinding angles.

Normally, the grinding angle is 30. Grinding back and forth along a straight line can achieve a higher metal removal rate and a rougher surface.

When better roughness is required, the grinding angle is reduced to 15. By grinding with a contact arc, the contact area between the cutting piece and the surface of the workpiece can be increased, and the grinding pressure can be reduced, thereby obtaining a better roughness.

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