发明名称 |
Herstellung eines Zylindergehäuses eines Doppelschneckenextruders |
摘要 |
A process for producing a barrel for a twin-screw extruder with intermeshing screws from a steel block, wherein the barrel has a wear resistant inner surface, includes producing two partially intersecting bores passing completely through the steel block, the two intersecting bores forming a spectacle-shaped bore having narrowed regions where the two intersecting bores intersect, and hardening an inner surface of the spectacle-shaped bore with essentially constant depth of penetration by passing an inductor through the spectacle-shaped bore from one end to the other, the inductor is smaller than but having approximately the same shape as the inner contour of the spectacle-shaped bore and is configured such that less energy for heating the inner surface of the spectacle-shaped bore is delivered in the vicinity of the two narrowed regions of the spectacle-shaped bore by the longitudinal sections on the periphery of the inductor than in regions on the inner contour remote from the narrowed regions. |
申请公布号 |
DE10112295(B4) |
申请公布日期 |
2004.07.29 |
申请号 |
DE2001112295 |
申请日期 |
2001.03.08 |
申请人 |
BERSTORFF GMBH |
发明人 |
BEHLING, MICHAEL;WESLING, VOLKER;MOTZKAU, UWE |
分类号 |
B29C47/66;C21D1/10;C21D9/00;C21D9/08;(IPC1-7):C21D1/10 |
主分类号 |
B29C47/66 |
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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