发明名称 |
METHOD FOR CASTING ENGINE BLOCK |
摘要 |
PROBLEM TO BE SOLVED: To provide a sand mold for improving the machining precision of a cast V block. SOLUTION: An engine block mold package is assembled from a resin-bonded sand mold cores in a manner which reduces parting line on the exterior surfaces of the mold package. An assembly of multiple cores (core packages) is formed and provided with multiple inter-core parting lines extending in different directions in the exterior surface of the core assembly. The core package is disposed between a base core and a cover core. This cover core is constituted so as to form a single continuous exterior parting line around the assembled mold package by enclosing the core package.
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申请公布号 |
JP2003080346(A) |
申请公布日期 |
2003.03.18 |
申请号 |
JP20020169788 |
申请日期 |
2002.06.11 |
申请人 |
GENERAL MOTORS CORP <GM> |
发明人 |
SHADE LARRY R |
分类号 |
F02F1/00;B22C9/00;B22C9/02;B22C9/10;B22C9/24;B22D15/00;B22D19/08;(IPC1-7):B22C9/24 |
主分类号 |
F02F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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