焊道间隔冷却时间对Inconel 625温度场的影响  

Effect of interval cooling time between weld passes on temperature field of Inconel 625

作　　者：魏军会[1] 杜文波 张宝[1] 崔佳凯 易俊[1] 康诗琪 李建明 冯春宇[3] WEI Junhui;DU Wenbo;ZHANG Bao;CUI Jiakai;YI Jun;KANG Shiqi;LI Jianming;FENG Chunyu(PetroChina Tarim Oilfield Company,Oil and Gas Engineering Research Institute,Korla 841000,China;Sichuan Baoshi Machinery Drilling and Production Equipment Co.,Ltd.,Deyang 618000,China;School of Mechatronic Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中国石油塔里木油田公司油气工程研究院,新疆库尔勒841000 [2]四川宝石机械钻采设备有限责任公司,四川德阳618000 [3]西南石油大学机电工程学院,四川成都610500

出　　处：《兵器材料科学与工程》2020年第6期90-94,共5页Ordnance Material Science and Engineering

基　　金：中国石油天然气股份有限公司重大科技专项(2018E-1804)。

摘　　要：针对热丝脉冲TIG(HPTIG)堆焊Inconel 625合金,基于Abaqus软件平台、Fortran和Python语言开发程序,实现移动热源加载和焊缝单元逐次有序填充,建立温度场有限元模型,通过仿真验证模型的准确性。着重探讨焊道间冷却时间对焊缝温度梯度、冷却速率的影响规律。结果表明:当焊道间冷却时间较短时,随焊道数量增多,热累积效应逐渐显著,焊缝的冷却速率、温度梯度逐渐降低;随焊道间冷却时间增加,热输入量和散失量趋于动态平衡,焊缝的冷却速率、温度梯度逐渐趋于一致。The temperature field finite element model for the hot wire pulse TIG(HPTIG)surfacing welding Inconel 625 alloy was established basing on the Abaqus software platform and developing program by Fortran and Python language to realize the movement of heat model and the orderly filling of the elements of weld bead.The validity of the modeling method was verified.Based on the developed finite element model of the temperature field,the influence of the cooling time between the weld passes on the temperature gradient and cooling rate of the weld beam was analyzed.The results show that when the cooling time between weld passes is short,the heat accumulation effect is gradually significant with the increase of the number of weld passes,and the cooling rate and temperature gradient of the weld seam gradually reduce.However,with the increase of the cooling time between weld passes,the heat input and loss tend to be in dynamic balance,and the cooling rate and temperature gradient of the weld seam tend to be similar.

关 键 词：堆焊 Inconel 625 冷却时间 冷却速率 温度梯度 

分 类 号：TG455[金属学及工艺—焊接]