Surface contouring of a weld cap and adjacent base metal using ultrasonic impact treatment
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United States of America Patent
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Mar 28, 2017
Issued Date -
N/A
app pub date -
Jul 30, 2012
filing date -
Jul 29, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method for forming a smooth interface between a weld cap and an adjacent base metal utilizing ultrasonic impact treatment. The method improves the geometric profile of a weld while imparting a compressive residual stress layer on the weld metal and base metal thereby alleviating the tensile residual stresses imparted to the metals during welding. The contouring process does not remove material, as in grinding, but plastically deforms the surface being treated producing a densified surface, in turn providing a smooth weld cap and base metal surface finish without the loss of base or weld metal thickness.
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International Classification(s)
- F16L:PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR ....
- B23K:SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLA....
- F16B:DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL E....
- B25G:HANDLES FOR HAND IMPLEMENTS
- C22F:CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS MET....
- C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
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