In order to solve the surface chemical scab phenomenon of the high manganese steel casting, the method that replacing quartz sand with magnesium olivine sand was put forward in this paper.

介绍了为解决高锰钢铸件的表面化学粘砂现象，结合生产实际，提出将铸件原砂由石英砂改为镁橄榄石砂。

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Quartz sand core, which is made in accordance with a special core making technique of casting, is one of common materials used in Investment casting.

石英砂型芯是采用熔模精密铸造的常用材料，通过特定的制芯工艺制成的一种铸造用型芯。

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My factory productions quartz sand mainly uses in the glass, fire-proof material, smelting ferrosilicon, flux, ceramics, abrasive substance, casting.

我厂生产的石英砂主要用于玻璃，耐火材料，冶炼硅铁，冶金熔剂。

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