发明名称 |
Verbundstahlwerkstück und Verfahren zu seiner Herstellung. |
摘要 |
The invention relates to a composite steel workpiece and a method of manufacturing same, in which a supporting sleeve is provided with at least one clearance, which clearance is provided with a wear-resistant and/or corrosion-resistant lining, which is bonded to the supporting sleeve to form a metal composite. The invention provides that, in particular for forming a twin-screw or multiple- screw barrel for plastics processing, the supporting sleeve, provided with at least one core at the point(s) of the desired clearance(s), is subjected together with the core(s) to a hot forming process at an appropriate temperature, in particular a cross-sectional reduction, the core(s) is (are) given a non-circular cross-sectional shape and the clearance(s) is (are) formed in the core(s). |
申请公布号 |
DE58906078(D1) |
申请公布日期 |
1993.12.09 |
申请号 |
DE1989506078 |
申请日期 |
1989.06.15 |
申请人 |
BOEHLER EDELSTAHL GES.M.B.H., KAPFENBERG, AT |
发明人 |
KROISENBRUNNER, WALTER, A-8605 KAPFENBERG, AT |
分类号 |
B21B1/38;B21J5/00;B23P15/00;B29C45/62;B29C47/08;B29C47/66;B32B15/01;(IPC1-7):B29C47/08 |
主分类号 |
B21B1/38 |
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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