In the process of daily use, many consumers will soften when cutting materials with cutting wheels, especially resin cutting wheels. The following is a summary for the majority of consumers to answer their questions.
The solution of large slicing film is a technical problem, and it is also caused by the influence of comprehensive factors, mainly involving factors such as process plan, technical route, formula, and consistency of raw materials with the process.
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1. The hardening temperature is too low or too high
Mainly due to the sudden and large changes in temperature and humidity, and the fluctuation of relevant technical indicators of the raw materials at the same time reaches the conditions required for cutting the grinding wheel film. At this time, if the hardening curve is still the same as before, the film will be produced.
Low hardening temperature means that due to the dual influence of the environment and raw materials, when the seasons change or the temperature and humidity change significantly, the maximum hardening temperature of the resinoid grinding wheel should be provided in time.
High hardening temperature means that the hardening curve has been adjusted, but when the stability is reduced and the hardening temperature is not adjusted in time when the weather is dry, it is also easy to cause the grinding wheel to be soft.
2. Short time for hardening curve
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.
3. The furnace or the kiln is too fast or the temperature difference is too large
Because the grinding wheel, especially the grinding wheel with large diameter, should have a certain cooling time period at the end of the hardening and heat preservation to satisfy the uniform release of the stress of the resin cutting grinding wheel; at this time, if the discharge temperature is too high or the temperature difference changes too much, the cooling change of the grinding wheel will not change. will be synchronized, so the deformation of the grinding wheel appears. Resin cutting wheel film is actually a form of deformation.
4. Elimination of Hardening Moisture Atmosphere Problems in Hardening Furnace
All hardening furnaces, whether they are box furnaces or tunnel kilns, must take into account the intake and exhaust air when designing the kiln. Since a large amount of waste gas (mainly ammonia and water vapor) will be released during the hardening process of the resinoid grinding wheel, if the waste gas cannot be discharged in time, it will be re-adsorbed by the pores of the resinoid grinding wheel during the cooling process of the grinding wheel, so the grinding wheel will stink and softened.
