不同回火温度对X70管线钢管焊缝组织性能的影响
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摘要
为了研究热煨弯管制作过程中回火温度对X70直缝埋弧焊管焊缝组织性能的影响规律,开展了热处理试验,并对试样进行了力学性能检测及金相分析,研究了不同回火温度对X70焊管焊缝热影响区韧性的影响。研究结果采表明,采用500~550℃回火处理时,弯管焊接接头冲击韧性和强度匹配最佳;采用570~600℃回火处理时,焊缝和热影响区冲击韧性迅速恶化,已不适宜用作油气输送管线用管。
In order to study the influence rule of tempering temperature on X70 SAWL pipe weld microstructure performance in hot-bending bends manufacturing process, the heat treatment test was carried out, the mechanical property testing and metallographic analysis were conducted on the sample, and the influences of different tempering temperature on weld HAZ toughness of X70 welded pipe was studied. The results showed that the tempering treatment in 500~550 ℃, the matching of hot-bending bends welded joint impact toughness and strength was optimum; the tempering treatment in 570 ~600 ℃, the impact toughness of weld and HAZ deteriorated rapidly, was not suitable for pipeline used for transportation oil and gas.
In order to study the influence rule of tempering temperature on X70 SAWL pipe weld microstructure performance in hot-bending bends manufacturing process, the heat treatment test was carried out, the mechanical property testing and metallographic analysis were conducted on the sample, and the influences of different tempering temperature on weld HAZ toughness of X70 welded pipe was studied. The results showed that the tempering treatment in 500~550 ℃, the matching of hot-bending bends welded joint impact toughness and strength was optimum; the tempering treatment in 570 ~600 ℃, the impact toughness of weld and HAZ deteriorated rapidly, was not suitable for pipeline used for transportation oil and gas.
引文
[1]刘迎来,李平全.感应加热弯管的生产技术现状与发展[C]//石油管道工程应用基础研究论文集.北京:石油工业出版社,2001:181-184.
[2]赵春,霍春勇,虞毅,等.回火温度对X70管线钢感应加热弯管组织性能的影响[J].热加工工艺,2007,36(22):63-65,69.
[3]李为卫,熊庆人,刘迎来,等.加热温度对X70管线钢感应加热弯管组织性能的影响[J].热加工工艺,2003,30(5):38-39.
[4]李为卫,熊庆人,刘迎来,等.冷却速度对X70管线钢感应加热弯管组织性能的影响[J].精密成形工程,2003,21(3):14-16.
[5]张骁勇,高惠临.X70管线钢感应加热弯管工艺参数的热模拟试验[J].热加工工艺,2005,20(9):34-35.
[6]杨玮玮,彭立山,李国鹏,等.感应加热弯管热处理前后热影响区组织和性能的变化[J].焊管,2015,10(6):58-62.
[7]纪美术,冯斌,杜则裕.控轧钢钢管热煨弯管的应用与发展趋势[J].焊接技术,2007,36(5):61-63.
[8]邵靖利,丛相州.弯管制造工艺对X70钢弯管性能的影响[J].机械工人,2005,(10):71-74.
[9]崔忠圻.金属学与热处理[M].北京:机械工业出版社,1997:324-328.
[10]刘俞铭.金属热处理质量缺陷分析防治[M].北京:工业出版社,2011:205-235.
[2]赵春,霍春勇,虞毅,等.回火温度对X70管线钢感应加热弯管组织性能的影响[J].热加工工艺,2007,36(22):63-65,69.
[3]李为卫,熊庆人,刘迎来,等.加热温度对X70管线钢感应加热弯管组织性能的影响[J].热加工工艺,2003,30(5):38-39.
[4]李为卫,熊庆人,刘迎来,等.冷却速度对X70管线钢感应加热弯管组织性能的影响[J].精密成形工程,2003,21(3):14-16.
[5]张骁勇,高惠临.X70管线钢感应加热弯管工艺参数的热模拟试验[J].热加工工艺,2005,20(9):34-35.
[6]杨玮玮,彭立山,李国鹏,等.感应加热弯管热处理前后热影响区组织和性能的变化[J].焊管,2015,10(6):58-62.
[7]纪美术,冯斌,杜则裕.控轧钢钢管热煨弯管的应用与发展趋势[J].焊接技术,2007,36(5):61-63.
[8]邵靖利,丛相州.弯管制造工艺对X70钢弯管性能的影响[J].机械工人,2005,(10):71-74.
[9]崔忠圻.金属学与热处理[M].北京:机械工业出版社,1997:324-328.
[10]刘俞铭.金属热处理质量缺陷分析防治[M].北京:工业出版社,2011:205-235.