公开(公告)号：US5575934A

公开(公告)日：1996-11-19

申请号：US542629

申请日：1995-10-13

申请人： Sadayuki Takakuwa ,  Yasuhiro Goto

发明人： Sadayuki Takakuwa ,  Yasuhiro Goto

IPC分类号： G01N27/20 ,  B23K11/24 ,  B23K11/25

CPC分类号： B23K11/257

摘要： The welding quality of materials sandwiched between and welded by two electrodes is monitored by a welder monitor, which includes a detecting section for detecting a welding current and a welding voltage, an operation section for numerically analyzing, based on a heat conduction model, a temperature distribution of the two electrodes and that of the materials using the detected welding current and welding voltage, to thereby estimate a nugget diameter during welding, a reference diameter setting section for setting a reference nugget diameter, and a diameter comparing section for comparing the nugget diameter during welding with the reference nugget diameter, to thereby compute a time at which the nugget diameter exceeds the reference nugget diameter. The welder monitor also includes a reference time setting section for setting a reference time shorter than a given time until which welding of intended materials is not terminated, a time comparing section for comparing a nugget formation time, at which the nugget diameter during welding exceeds the reference nugget diameter, with the reference time set by the reference time setting section, and an output section for outputting a comparison result from the time comparing section. When the nugget formation time is shorter than the reference time, the nugget formation time is outputted to the output section.

摘要翻译： 夹在两个电极之间并由两个电极焊接的材料的焊接质量由焊接监视器监测，焊接监视器包括用于检测焊接电流的检测部分和焊接电压，基于热传导模型数值分析的操作部分， 使用检测到的焊接电流和焊接电压来分配两个电极和材料的分布，从而估计焊接期间的熔核直径，用于设定参考熔核直径的参考直径设定部分和用于比较熔核直径的直径比较部分 在焊接参考熔核直径的过程中，计算熔核直径超过参考熔核直径的时间。 焊机监视器还包括参考时间设定部分，用于设定比期望材料的焊接未终止的给定时间短的参考时间，用于比较熔核形成时间的时间比较部分，在该时间比较部分，焊接期间的熔核直径超过 参考熔核直径，参考时间设定部分设定的参考时间，以及用于输出时间比较部分的比较结果的输出部分。 当熔核形成时间短于参考时间时，熔核形成时间被输出到输出部分。