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封闭母线槽组成单元及焊接质量

浏览:290 时间:2019-11-203D彩票

封闭母线槽的焊接质量差,由于封闭母线大部分的连接是通过焊接(包括制造厂的连接),而封闭母线槽3D彩票为铝材,铝板易和氧起作用,在其表面生成一层致密而又难熔的氧化膜,且氧化膜的比重也大,不易浮出熔池而形成焊缝夹渣。

封闭母线槽的焊接质量差,由于封闭母线大部分的连接是通过焊接(包括制造厂的连接),而封闭母线槽3D彩票为铝材,铝板易和氧起作用,在其表面生成一层致密而又难熔的氧化膜,且氧化膜的比重也大,不易浮出熔池而形成焊缝夹渣;另外,液态铝可溶解大量氢气,固态铝几乎不溶解氢,因此,熔化的焊缝金属快速冷却与凝固时,氢气来不及析出,容易在焊缝中聚集形成气孔,焊接环境潮湿等因素也会影响焊接处的密封性能。

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封闭母线槽

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