发明名称 |
Method and apparatus for making molds |
摘要 |
A program controlled customized method for making molds comprises the steps of dispensing a layer of molding material including a mixture of sand and binder over a mold forming pattern by means of relative movement between a dispensing device and the pattern while selectively varying the ratio of sand and binder in the mixture dispensed in predetermined areas of the pattern or in successive layers to provide a mold of the desired strength in certain critical areas while conserving the amount of binder needed for the completed mold.
|
申请公布号 |
US4121646(A) |
申请公布日期 |
1978.10.24 |
申请号 |
US19760731930 |
申请日期 |
1976.10.13 |
申请人 |
NATIONAL ENGINEERING COMPANY |
发明人 |
RIKKER, LESLIE D. |
分类号 |
B01F7/18;B01F5/26;B22C5/00;B22C5/04;B22C5/12;B22C9/02;(IPC1-7):B22C3/00 |
主分类号 |
B01F7/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|