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Category Hardware
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Created 2018-11-02
Owner mklyk
Title What makes the cutting disc no longer hard?
Description China cut off disc The cutting piece is widely used in our life due to its impact resistance, high tensile strength and bending resistance. However, the phenomenon of the film that occurs when using the cutting piece affects our normal use, and sometimes it is doubtful why the film appears.
1. The temperature difference is too large when the cutting disc is produced. Since the cutting piece should have a certain cooling time 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.
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, they will be re-adsorbed by the pores during the cooling process, causing the grinding wheel to be 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 is not 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, the weather is dry, and when the weather is dry, the hardening of the hardening is not easy.
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. ad.high performance cutting disc
Type Pc
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