What are the reasons for the film to appear on the cutting disc?

The cutting disc is widely used in our life due to its impact resistance, high tensile strength and anti-bending. What are the reasons for the appearance of the film when using the cutting disc?

1. The furnace or the kiln is too urgent or the temperature difference is too large.

Since the cutting disc should have a certain cooling period at the end of the hardening and heat preservation to satisfy the uniform release of stress; at this time, if the temperature of the furnace is too high or the temperature difference changes too much, the cooling change of the grinding wheel will not be synchronized, so the deformation of the grinding wheel appears. It is. In fact, it is also a manifestation of deformation.

2. Hardening furnace kiln eliminates hardening and humid atmosphere

All hardening furnaces, whether box furnaces or tunnel kiln, must consider intake and exhaust when designing the furnace. Due to the release of a large amount of exhaust gas (mainly only ammonia gas, water vapor) during the hardening process, if these exhaust gases cannot be discharged in time, the pores in the cooling process will be re-adsorbed, so that the grinding wheel is odorous and soft.

3, hardening stable low

The low stability of hardening means that due to the dual influence of environment and raw materials, the hardening temperature should be provided in time when the seasons alternate or the temperature and humidity change significantly. The hardening is high, which means that the hardening curve has been adjusted, but when the stability is happy and the weather is dry, the hardening is not stabilized in time, and it is easy to cause the film to be cut.

4, the hardening curve is short

This mainly means that under certain conditions, the low-temperature drying time of the hardening curve is short, and the heating rate is too fast in the heating stage.