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摘要：
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管端加厚是提高油管接头强度的有效途径,滚压螺纹有利于缓解应力疲劳。大变形量的管材镦粗容易产生内凹、折叠等缺陷,针对这一问题,经过整体工艺性能分析,提出了一种分段式模锻成形新工艺:将油管的镦粗加厚部分按照适当比例分为两段,分别单独锻造成形,然后经摩擦焊接实现加厚段的连接,并根据成形工艺设计了相应的模具,通过有限元数值模拟,进一步验证了新工艺的可行性和模具设计的合理性。
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It is an effective approach for improving the intensity of joint to thicken the pipe end.Rolling thread is conducive to releasing stress fatigue.Defects such as inner concave,puckering and etc.are easy to occur when large deformation during the upset forging of tube parts.A new technology of segmented forging forming for oil pipe with thickened end and its corresponding die and mould were designed by analysis on the technology property and formability to solve the above problems.The thickened part of the oil pipe was divided into two sections according to proper proportions.Each section was forged respectively,and then connected through friction welding.Meanwhile,feasibility of the new technology and rationality of the die and mould design were further verified through the numerical simulation results.
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基金项目：
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作者简介：
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参考文献：
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[1]闫月娟.抽油机井油管断裂失效状态分析[J].气田地面工程,2007,26(2):48-50.
[2]郑广汉,金少先.油管螺纹联接的应力分析[J].大庆石油学院学报,1994,18(3):109-111.
[3]Du F S,Wang M T,Li X T.Research on deformation andmicrostructure evolution during forging of large-scale parts[J].Journal of Materials Processing Technology,2007,(187):591-594.
[4]俞彦勤,黄早文,何小诚,等.轴向加压厚壁管塑性变形的理论分析[J].石油机械,1999,27(4):42-45.
[5]黄早文,徐开东,张志坤,等.管坯镦锻工艺仿真及优化[J].锻压技术,2006,31(6):9-11.
[6]张志文.锻造工艺学[M].北京:机械工业出版社,1990.
[7]唐众民,黄早文,俞彦勤,等.浅析端部加厚油管的锻造成形[J].锻压机械,2002,37(1):33-35.
[8]李尚健.锻造工艺及模具设计资料[M].北京:机械工业出版社,1991.
[9]施卫兵,刘子利,孙正茂,等.直齿轮温挤压工艺参数分析及凹模磨损数值模拟[J].锻压技术,2007,32(6):105-108.
[10]刘俊生,张彩丽,郑其明,等.管件局部加热缩口、镦粗复合模设计与成形工艺[J].锻压技术,2006,31(4):57-60.
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