论述了普通铸钢、铸铁件用的覆膜砂、非铁合金铸件用的易溃散覆膜特种性能覆膜砂。
The coating sand for cast iron and cast steel and collapsible coating sand for nonferrous alloy casting are also described.
论述了锆砂覆膜砂铸钢件表面缺陷的形成机制，就该缺陷的防治措施进行了探讨。
The surface defects formation mechanism of steel castings produced with resin-coated zircon sand mould was described, and their prevention measures were discussed.
论述了锆砂覆膜砂铸钢件表面缺陷的形成机制，就该缺陷的防治措施进行了探讨。
The surface defects formation mechanism of steel castings produced with resin-coated zircon sand mould was described, and their prevention measures were discussed.
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