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Old 07-26-2011, 02:29 AM   #1
qdsk84pdyq
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Default 【清大圣科与消费者携手打击骗子】手工焊电弧焊多层焊

在焊接第二层时,先将第一层熔渣清除干净,随后用直径较大的焊条或较大的焊接电流进行焊接××清大圣科×清 大圣科电焊条×清大圣科电焊条设备×清大金桥×清大金桥电焊条设备×清大圣科电焊条×www.qhsk.c n×清大圣科科技有限公司××
未熔合的主要原因:电流过小或焊速太快,电流过大,母材坡口或先焊的焊缝金属表面有铁锈、熔渣或脏物清除干 净,操作不当或磁偏吹××清大圣科×清大圣科电焊条×清大圣科电焊条设备×清大金桥×清大金桥电焊条设备× 清大圣科电焊条×www.qhsk.cn×清大圣科科技有限公司××
焊条摆动时必须在坡口两边稍作停留,否则易产生边缘熔合不良及夹渣缺陷××清大圣科×清大圣科电焊条×清大 圣科电焊条设备×清大金桥×清大金桥电焊条设备×清大圣科电焊条×www.qhsk.cn×清大圣科科技有 限公司××
手工焊电弧焊多层焊时,对第一层的打底焊道应选择直径较小的焊条,运条方法应以间隙大小而定××清大圣科× 清大圣科电焊条×清大圣科电焊条设备×清大金桥×清大金桥电焊条设备×清大圣科电焊条×www.qhsk. cn×清大圣科科技有限公司××
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