1, Clay sand is a kind of mold (core) sand with clay (clay) as binder. Clay sand molding is still the main way of casting production because of its low cost and suitable for mass production. The physical properties of clay sand and old sand change due to the thermal decomposition of each component in the process of recycling. If they are used without regeneration, the quality of molding sand will be unstable. According to statistics, 30 ~ 40% of the casting scrap 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 for molding sand quality are higher and higher.
Several common defects related to molding sand quality in clay sand molding.
1, Clay sand is a kind of mold (core) sand with clay (clay) as binder. Clay sand molding is still the main way of casting production because of its low cost and suitable for mass production. The physical properties of clay sand and old sand change due to the thermal decomposition of each component in the process of recycling. If they are used without regeneration, the quality of molding sand will be unstable. According to statistics, 30 ~ 40% of the casting scrap 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 for molding sand quality are higher and higher. 2, Several common defects related to molding sand quality in clay sand molding.
1, Clay sand is a kind of mold (core) sand with clay (clay) as binder. Clay sand molding is still the main way of casting production because of its low cost and suitable for mass production. The physical properties of clay sand and old sand change due to the thermal decomposition of each component in the process of recycling. If they are used without regeneration, the quality of molding sand will be unstable. According to statistics, 30 ~ 40% of the casting scrap 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 for molding sand quality are higher and higher. 2, Several common defects related to molding sand quality in clay sand molding.
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