厚壁直缝埋弧焊管焊缝熔合线夹渣产生的原因
Steel Pipe(2013)
Abstract
针对在生产X65钢级Φ762mm×30.2mm直缝埋弧焊管初期焊缝夹渣比例达到20%的问题,分析了厚壁直缝埋弧焊管焊缝熔合线夹渣产生的原因及焊接工艺参数对焊缝夹渣的影响,提出了改进措施。经多次试验及调整工艺参数后,焊缝夹渣比例降到5%以下,使焊管返修比例降低,生产效率大幅度提高。
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Key words
linear energy,fusion line,heavy-wall SAWH pipe,weld,entrapped slag,bevel dimensions
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