X70埋弧焊钢管焊接接头热影响区冲击吸收能量波动分析
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摘要
高钢级管线钢焊接接头热影响区冲击试验结果分散性较大,为了研究其冲击吸收能量波动的影响因素,对X70埋弧焊钢管焊接接头熔合线位置的冲击试验结果进行了分析。结果表明:X70埋弧焊钢管焊接接头热影响区熔合线位置冲击吸收能量较低,但在-10℃试验温度下,熔合线位置平均冲击吸收能量也达到了100J以上;X70埋弧焊钢管焊接接头热影响区熔合线冲击吸收能量的显著波动是由刻槽位置的偏差及裂纹扩展走向的不确定性引起的。
The impact test results of heat affected zone of welded joints of high-grade pipeline steel were more dispersive.In order to study the influence factors of impact absorption energy fluctuation,the impact test results of fusion line position of welded joint of X70 submerged arc welded steel pipe were analyzed.The results show that the impact absorption energy by the fusion line in heat affected zone of welded joint of X70 submerged arc welded steel pipe was low,but the average impact absorption energy by the fusion line was over 100 Jat the test temperature of -10℃.The significant fluctuation of impact absorption energy by the fusion line in heat affected zone of welded joint of X70 submerged arc welded steel pipe was caused by the deviation of groove position and the uncertainty of crack propagation direction.
The impact test results of heat affected zone of welded joints of high-grade pipeline steel were more dispersive.In order to study the influence factors of impact absorption energy fluctuation,the impact test results of fusion line position of welded joint of X70 submerged arc welded steel pipe were analyzed.The results show that the impact absorption energy by the fusion line in heat affected zone of welded joint of X70 submerged arc welded steel pipe was low,but the average impact absorption energy by the fusion line was over 100 Jat the test temperature of -10℃.The significant fluctuation of impact absorption energy by the fusion line in heat affected zone of welded joint of X70 submerged arc welded steel pipe was caused by the deviation of groove position and the uncertainty of crack propagation direction.
引文
[1]李鹤林,吉玲康,田伟.西气东输一、二线管道工程的几项重大技术进步[J].天然气工业,2010,30(4):1-9.
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[5]吕晓春,何鹏,秦建,等.焊接热循环对SA508-3钢临界粗晶区组织和性能的影响[J].焊接学报,2014,35(12):47-49.
[2]蔺卫平,李爱萍,王晓燕,等.X70管线钢焊接接头热影响区的冲击性能[J].理化检验(物理分册),2009,45(5):273-276.
[3]熊庆人,高惠临,霍春勇,等.X80管线钢焊接热影响区的韧性[J].机械工程材料,2007,31(4):29-33.
[4]贾元伟.2507双相不锈钢模拟焊接热影响区的组织与性能[J].理化检验(物理分册),2014,50(6):417-420.
[5]吕晓春,何鹏,秦建,等.焊接热循环对SA508-3钢临界粗晶区组织和性能的影响[J].焊接学报,2014,35(12):47-49.