Invention Grant
- Patent Title: Blowout resistant weld method for laser welds for press-fit parts
- Patent Title (中): 用于压配件的激光焊接的防爆焊接方法
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Application No.: US11453628Application Date: 2006-06-15
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Publication No.: US07930825B2Publication Date: 2011-04-26
- Inventor: James Paul Fochtman , Jack David Oliver
- Applicant: James Paul Fochtman , Jack David Oliver
- Applicant Address: unknown Auburn Hills
- Assignee: Continental Automotive Systems US, Inc.
- Current Assignee: Continental Automotive Systems US, Inc.
- Current Assignee Address: unknown Auburn Hills
- Main IPC: B21K1/20
- IPC: B21K1/20

Abstract:
A method for reducing “blow-out” of annular welds for attaching press-fit components in a fuel injector assembly is disclosed. The method employs a multi-step welding procedure whereby a first annular weld bead that corresponds to less than 360° of rotation of the assembly about a longitudinal axis leaves a radial void that is thereafter sealed with a second annular weld bead. In an alternative embodiment, a relief region is formed on radially-facing surfaces of the components, the relief region being disposed adjacent to a press-fit region. A sealed gap is thereby formed in the relief region between the welds and the press-fit region. The sealed gap provides a further means for expansion of trapped gases that could otherwise “blow out” the liquid weld bead.
Public/Granted literature
- US20070107699A1 Blowout resistant weld method for laser welds for press-fit parts Public/Granted day:2007-05-17
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