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捷克斯洛伐克的铸造厂铸钢件生产中广泛采用着膨润土砂。这样,不增加很多投资就能提高现有铸造厂的产量;特别用膨润土砂来制造几吨重的铸件更能提高产量。生产10吨以上形状复杂的大型铸件已很普通。
Bentonite sand is widely used in the casting of castings in Czechoslovakia. In this way, the output of existing foundries can be increased without adding much investment; in particular, the production of several tons of castings with bentonite sand can increase the production. It is common to produce large castings of more than 10 tons in complex shapes.