发明授权
- 专利标题: Tubular articles with varying wall thickness and method of manufacturing same
- 专利标题(中): 具有不同壁厚的管状制品及其制造方法
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申请号: US11261369申请日: 2005-10-28
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公开(公告)号: US07412866B2公开(公告)日: 2008-08-19
- 发明人: Mamad Jahani , Colin Newport
- 申请人: Mamad Jahani , Colin Newport
- 申请人地址: CA Hamilton, Ontario
- 专利权人: ArcelorMittal Tubular Products Canada Inc.
- 当前专利权人: ArcelorMittal Tubular Products Canada Inc.
- 当前专利权人地址: CA Hamilton, Ontario
- 代理机构: Patzik, Frank & Samotny Ltd.
- 主分类号: B21D17/02
- IPC分类号: B21D17/02 ; B60B37/00
摘要:
A method for manufacturing a one-piece axle tube housing with localized sections of increased wall thickness includes providing a tube blank, inserting a mandrel having a reduced diameter profile, passing the tube through an extrusion die to conform the tube to the shape of the mandrel; and extraction of the mandrel from the tube to cause outward deformation of the tube at specific locations. A further reducing step may be used to form the final desired profile, including reduced inner and outer diameters along sections of the axle tube housing.
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