Through the understanding of sand casting process, it is known that hot sand as raw material will have a far-reaching impact on the whole process and its results. Therefore, the key point in sand casting is the correct use of hot sand. In addition, temperature, material etc also have to pay more attention, otherwise it will make the molding casting not up to the requirements of enterprises will also be a part of the loss.
I. Effect of hot sand on water content in sand casting
When the sand casting, the first step is to put into the hot sand molding machine, but they are considered, once after the hot sand into the equipment of water will be a huge loss, this situation will cause a great impact on the performance of sand.
Two. The effect of hot sand on the die sticking effect in sand casting
It is precisely because of the existence of hot sand, so that the water branch into a condensed state, so the entire mold will also change the effect. Especially when the pattern is formed, the hot sand will evaporate because of the evaporation of water, then the condensed sand will be directly on the core, and then reduce the strength of the core, and finally, the quality of the whole casting may also decline.
Three, the use of temperature in sand casting and auxiliary control
Because of the hot sand casting process of the mold's influence is still very large, so we must try to avoid the problems occurred in the right way, on the one hand is to control the old sand temperature is generally maintained at fifty degrees on it. If the temperature is higher, the casting will be reduced; but if the temperature is low, it will interfere with the normal casting process.
On the other hand, it is possible to use some auxiliary materials and control them comprehensively so as to avoid unnecessary troubles and affect the effect of the whole sand casting. At the same time, do not forget to add new sand, but also have a good grasp, so that it can play the best rol
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Wuxi Dongao Nonferrous Casting Co., Ltd.
Add：NO.1 Nongxin Road，Yuxiang village，Dongbeitang town,Xishan district, Wuxi, China
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