发明授权
US3668160A Resin-coated sand mixes for shell molding 失效
用于壳模的树脂涂层混合物

Resin-coated sand mixes for shell molding
摘要:
For use in resin-shell molding, a resin-coated sand mix containing a small percentage of a non-volatile, oily, organic liquid suitable to alleviate the condition of peel-back.
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