Clay sand is mold (core) sand with clay (clay) as binder. Clay sand molding is still one of the main methods of casting production because of its low cost and suitable for mass production. The preparation of linear core sand in clay sand production directly affects the quality and output of casting production and the reduction of cost; Because the sand treatment process is complex, the workload of clay sand treatment and transportation is very large, and the environment is bad, so the mechanization of sand treatment process is an important part of casting production.
The physical properties of old clay sand change due to the thermal decomposition of each component in the process of recycling. If it is used without regeneration, the quality of molding sand will be unstable. According to statistics, 30-40% of the casting reject rate is caused by the quality of molding sand, so the control of molding sand quality plays a very important role in clay sand molding. With the improvement of casting requirements, the requirements of molding sand quality are becoming higher and higher.
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