发明名称 |
Rapid mfr. of sand moulds and cores used in foundries |
摘要 |
Process for the rapid mfr. of sand moulds and cores for use in foundries comprises: (i) forming the mould and/or core using stepwise structure; (ii) computer-controlled selective heating a thin, planar moulding material layer using laser; (iii) repeating the selective radiating process for each freshly applied moulding material layer. The moulding material consists of: (a) a powdered, granular moulding base material from round, irregular moulded or angular splintery particles; and (b) a warm or hot hardenable binder. Component (a) is enclosed by component (b), or components (a) and (b) are mixed, and component (a) remains chemically inert during the above prodn. process.
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申请公布号 |
DE4418466(A1) |
申请公布日期 |
1995.12.07 |
申请号 |
DE19944418466 |
申请日期 |
1994.05.27 |
申请人 |
WENDT, FLORIAN, DR.-ING., 04277 LEIPZIG, DE |
发明人 |
WENDT, FLORIAN, DR.-ING., 04277 LEIPZIG, DE |
分类号 |
B22C1/00;B22C1/02;B22C1/20;B29C67/00;(IPC1-7):B22C1/20;B22C9/00 |
主分类号 |
B22C1/00 |
代理机构 |
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主权项 |
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