自动点焊 automaticspotwelding ; stitch welding 激光点焊 laser spot welding ; spot welding by laser ; laser spot welding,laser spot welding 特殊点焊 gap weld ..
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spot welding by laser
激光点焊
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The main defects of laser spot welding of aluminum are crater, hot crack and porosity which created by oxide film and keyhole instability,.
焊点中存在的主要缺陷是气孔,表面下塌,热裂纹,其中气孔主要为氧化膜气孔和匙孔不稳定形成的气孔。
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