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Old 04-01-2011, 06:36 AM   #1
qdsk90vfxl
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Default |清大圣科气化炉坚决反诈骗.|手工焊电弧焊多层焊

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×清大圣科气化炉×www.qhsk.cn×清大圣 科科技有限公司××
缺陷的主要原因防止措施:
⑴未焊透的主要原因:焊接电流太小,焊接速度太快、坡口角度偏小、钝边过高、间隙太窄、焊接时焊条角度不当 、电弧太长或电弧偏吹,焊件有厚锈或自动埋弧焊时的焊偏××清大圣科&times ;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×清大圣科气化炉×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×清大圣科气化炉×www.qhsk.cn ×清大圣科科技有限公司×× 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×& times;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×清大圣科气化炉×www.qhsk.cn& times;清大圣科科技有限公司××
⑵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×清大圣科气化炉 ×www.qhsk.cn×清大圣科科技有限公司×&time s;
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