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Through the understanding of the sand mold casting process, we know that hot sand as raw material will have a far-reaching impact on the whole process and its results, so the key to master sand mold casting is the correct use of hot sand. In addition, more attention should be paid to temperature, auxiliary materials, and other aspects, otherwise, the formed castings will not meet the requirements, which will also be a part of the loss for the enterprise.
In sand casting, the first step is to put the hot sand into the molding machine. But have you considered that once the hot sand enters the equipment, a large amount of water will be lost, which is bound to have a great impact on the performance of the molding sand?
It is precise because of the existence of hot sand that the water branch changes into a condensed state, so the whole mold adhesion effect will also change. Especially after molding, the hot sand will evaporate due to the evaporation of water, so the condensed sand will be directly on the core, thereby reducing the strength of the core, and finally, the quality of the whole casting may be reduced.
Because hot sand still has a great influence on the whole sand mold casting process, we must try to avoid problems correctly. On the one hand, we must control the temperature of old sand, which is generally maintained at about 50 degrees. If the temperature is high, the cast products will be reduced; however, if the temperature is low, it will interfere with the normal progress of casting.
On the other hand, we can use some auxiliary materials and control them comprehensively, to avoid some unnecessary troubles and affect the effect of the whole sand mold casting. At the same time, don't forget the addition of new sand, but also have to grasp it well to make it play its best role.