Method and apparatus for monitoring weld quality
    6.
    发明授权
    Method and apparatus for monitoring weld quality 失效
    用于监测焊接质量的方法和装置

    公开(公告)号:US3609285A

    公开(公告)日:1971-09-28

    申请号:US3609285D

    申请日:1968-09-04

    CPC classification number: B23K11/25

    Abstract: A circuit for monitoring spot welding is responsive to electrode separation and welding current and voltage to monitor the weld soft point and upset, the cold length of the parts, the number of cycles of welding current, and the energy consumed in producing the weld nugget. A reject signal is provided if any of the five parameters fall outside of predetermined limits. A special feature is the upset circuitry which uses a memory circuit and a comparison circuit to compare the initial electrode separation with the final separation.

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