发明名称 |
BONDING CASTING CORES |
摘要 |
An improved method of bonding sand cores to form an assembly, using paste usually containing clay or silicates, the method comprising: (a) coating at least one interfacing surface of intermating core parts with paste in a thickness of about .005-.020 inches; (b) mating the coated interfacing surface of one core part to the other core part to form an assembly; and (c) subjecting the paste in the assembly to microwave energy at an energy level of about 5-7 kilowatts to effectively dry the paste in a manner proceeding first from the interior of the paste body to its outer peripheral extremities. The subjection to microwave energy draws the core parts closer together by shrinking the paste coating and by causing the paste to boil and drive the paste into pores and/or voids of the intermating core surfaces; such process is preferably carried out within a time period of 10-30 seconds.
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申请公布号 |
CA2075595(C) |
申请公布日期 |
1999.04.27 |
申请号 |
CA19922075595 |
申请日期 |
1992.08.07 |
申请人 |
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发明人 |
DILLON, GEORGE ARNOLD;HOLODNKA, GARY JOHN;DADAS, NICK |
分类号 |
B22C9/10;(IPC1-7):B22C9/10;B22C9/12 |
主分类号 |
B22C9/10 |
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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