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公开(公告)号:US3621184A
公开(公告)日:1971-11-16
申请号:US3621184D
申请日:1969-05-12
申请人: M E D I
发明人: MIEVILLE ANDRE
CPC分类号: B23K9/007
摘要: Disclosed herein is automatic spot arc-welding apparatus comprising a pressure sensitive self-actuating device having a consumable welding electrode and an automatic feed mechanism for controlling the length of electrode consumed from one weld to the next. A delay circuit controls the welding current to continue the application of such current for a short period after termination of movement of the feed mechanism to accurately control the length of electrode which is burned off.