发明名称 |
Method of and apparatus for making pipe from a tubular workpiece |
摘要 |
A tubular workpiece with a throughgoing bore is held by a handler having a passage alignable with the bore and of a predetermined inside passage diameter. A rod carrying a mandrel and of an outside rod diameter is provided with a guide having an outside guide diameter slightly smaller than the inside passage diameter but greater than the outside rod diameter The passage is aligned by the handler with the workpiece bore and the mandrel is inserted through the handler passage into the workpiece bore while sliding the guide along the passage and centering the rod in the passage with the guide out of contact with an inner surface of the passage. The workpiece is externally engage around the mandrel with forging tools and thereby forged around the mandrel.
|
申请公布号 |
US8459085(B2) |
申请公布日期 |
2013.06.11 |
申请号 |
US20100697358 |
申请日期 |
2010.02.01 |
申请人 |
MUSCHALIK UWE;STEINGIESSER KLAUS;SMS MEER GMBH |
发明人 |
MUSCHALIK UWE;STEINGIESSER KLAUS |
分类号 |
B21D22/00 |
主分类号 |
B21D22/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|