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用火烧如何判断铜线质量好坏
更新时间： 2020-11-07 00:00:00  

用火烧，质量差的或者假的电线用火烧会麻利点火，有明火并冒出浓烟；真电线点火慢，有少量烟或无烟，无明火。

除此之外，还有其他鉴别的方法：

看铜质，铜质光洁度越高铜质越好，合格的铜芯电线铜芯理应是紫赤色、有光泽、手感软。伪劣的铜芯线铜芯为紫黑色、偏黄或偏白，杂质多，呆滞强度差，韧性不佳，稍使劲即会折断，而且电线内常有断线；

试一下。可取一根电线头用手重复笔直，凡是手感强固、抗疲倦强度好、塑料或橡胶手感弹性大且电线绝缘体上无龟裂的一般质量好。

关键词： 火烧 如何 判断 铜线 质量 好坏

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