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4. 操作故障诊断
下列信息为最常见的故障诊断方法:
送丝不畅或焊丝粘在送丝管上(焊弧不稳,操作者能感觉到手柄
内部振动):
使
焊丝和导电嘴不匹配。如有疑问,请参照推荐信息选用适合所
用焊丝的导电嘴。
导电嘴过热。
导电嘴的接触面由于焊渣或电火花造成损害。更换导电嘴。
焊枪电缆有急弯,请伸直。
焊丝有杂质,灰尘或尖角等。这些情况会引起送丝摩擦和接触
不良。
检查送丝单元。请检查送丝的沟槽尺寸是否和所用焊丝相符。
请检查送丝的压力,不要过大或者过小。
焊弧气体不稳定 (焊池沸腾,焊弧不稳定)
喷嘴或者导电嘴和导电嘴座内部有太多的焊渣,请清理。
保护气体的排气孔有焊渣或者其他渣滓,请清理。
保护气体有杂质(湿气,空气)。
基础材料有杂质(生锈,表面镀涂层,油脂)。
气管聚集过大的压力将使焊接开始时气流紊流或空气掺入。这
或许是由于没有正确调节减压器或减压器损坏引起的。
保护气体的气流过小或过大(引起气体紊流)。短弧焊接气流
一般在8-15 升/分,热弧焊接气流一般在10-20升/分。
焊枪与工件之间的距离过大。短弧焊接工件与焊枪之间的距离
保持在10-15mm之间,热弧焊接保持在15-30mm之间。
焊枪与工件之间的焊角过大。
焊接区域内通风气流过大。
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