What is the cause of the soft film on the cutting wheel?

1. The kiln is too fast or the temperature difference is very large, because the cutting wheel should have a certain cooling time range after the end of the hard bottom heat insulation to meet the uniform release of stress; at this time, if the announced temperature is too high or the temperature If the difference is too large, the cooling rotation of the grinding wheel will not be synchronized, so the deformation of the grinding wheel will appear. In fact, it is also a form of expression of deformation.
2. It is difficult to eliminate the damp and cold atmosphere of the hard bottom furnace. Whether the hard bottom furnace is a box furnace or a tunnel kiln, the air inlet and exhaust pipe must be considered when designing the kiln. Because a large amount of organic waste gas may be released during the hardening process (the key is only nitrogen dioxide and water vapor), if these organic waste gases cannot be discharged in time, they will be adsorbed again by the air outlet in the cooling process, so it leads to The disc is smelly or has become soft.
2. The time of the hardening curve is short, which mainly means that under special conditions, the freeze-drying time of the hardening curve is short, and the heating rate of the heating link is too fast.
4. The hard bottom is stable and low, which means that due to the double hazards of the environment and raw materials, when the seasons alternate or the temperature and humidity change significantly, the hard bottom ambient temperature should be given in time. The hardening is stable and high, which means that the hardening curve has been adjusted, but when the smoothness decreases, and the hardening level is not reduced in time when the weather is dry, it is easy to cause the cutting wheel to be soft.