The part of a metal that is not melted during cutting, brazing, or welding, but whose microstructure and physical properties are altered by these processes.

在经过切割、铜焊、焊接后，金属中没有熔融的部分，但其微观结构和物理特性已被改变。

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By a method of recording of welding currents and time, the information of joint microstructure and properties can be gained according to the welding time with different currents.

利用微机检测焊接电流和时间，运用统计方法获得在不同焊接电流区间的焊接时间，间接给出焊接接头组织性能的状态。

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To examine chemistry composition and microstructure of steel wire rod for welding of fracture during drawing.

对在拉拔过程中出现断裂的焊接用盘条进行化学成分和金相组织检测。

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