2.
    发明专利
    未知

    公开(公告)号:BR0008618A

    公开(公告)日:2001-12-26

    申请号:BR0008618

    申请日:2000-01-04

    Abstract: A protective gas shroud for welding is provided by: positioning an article into a chamber having an opening at the top to permit welding of the article; introducing argon into the body of the chamber to act as a protective gas shroud for the article during welding; introducing helium into the open top of the chamber to assist in maintaining a protective gas shroud around the article during welding; and welding the article within the protective gas shroud.

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