Method for Controlling Weld Quality

PROBLEM TO BE SOLVED: To provide a method for controlling weld quality and improving the same. ; SOLUTION: The method includes the steps of producing a shield gas curtain 7 around the heat source and producing a shroud gas curtain 16 spaced radially outward from the shield gas curtain 7, wherein the shroud gas curtain includes a radially outward component of velocity. The shield gas curtain and the shroud gas curtain are configured to control the resultant mechanical and/or surface properties of the weld. The present invention also relates to a method for substantially confining and concentrating shield gas about the vicinity of a welding site, and a method for substantially recovering and reusing a shield gas in a welding operation. ; COPYRIGHT: (C)2009,JPO&INPIT

Attached files:
JP 2009107017.jpg

Patents:
JP 2,009,107,017

Inventor(s): JOHN NORRISH; COOPER PAUL; GODBOLE AJIT

Type of Offer: Sale



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