| 摘要 |
PROBLEM TO BE SOLVED: To provide a coating agent composition for sand mold casting, which is improved in good balance to the prevention of sulfurizing phenomenon, burning resistance and drying. SOLUTION: The coating agent composition for sand mold casting contains a refractory aggregate having sphericity of 0.88-1.00 and fire resistance of SK011a-SK20. COPYRIGHT: (C)2007,JPO&INPIT
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