双相不锈钢堆焊温度场数值模拟  

Numerical simulation of temperature field of duplex stainless steel surfacing

作　　者：刘震昊 刘爱国[1] Liu Zhenhao;Liu Aiguo(Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学,沈阳110159

出　　处：《机械制造文摘（焊接分册）》2023年第1期34-38,48,共6页Welding Digest of Machinery Manufacturing

摘　　要：采用有限元方法对2209双相不锈钢堆焊温度场进行了模拟,分析了道间冷却时间、焊接电流、电压及焊接速度对温度场的影响。结果表明,多层多道堆焊时,在道间留足够的冷却时间,可以降低各焊道的峰值温度和高温停留时间,降低后续焊道焊接时导致的温度升高,有利于保持堆焊层的相平衡;后续焊道堆焊时,会导致前面相邻焊道靠近后续焊道侧出现较高温度升高,对前面相邻焊道中心及更远处没有显著影响;多层堆焊时,后一层焊道焊接时,会导致前面一层对应焊道产生较高温升;焊接热输入增加,导致堆焊焊道峰值温度升高、高温区范围扩大,而且对前一道焊道造成的温升增大。The temperature field of 2209 duplex stainless steel surfacing was simulated by finite element method,and the effects of interpass cooling time,welding current,voltage and welding speed on the temperature field were analyzed.The results show that when multi-layer and multi-pass surfacing is applied,enough cooling time between passes can reduce the peak temperature and high temperature residence time of each weld bead,reduce the temperature rise caused by subsequent weld bead welding,and help to maintain the phase balance of the surfacing layer;When the subsequent weld bead is overlayed,it will lead to a higher temperature rise near the side of the previous adjacent weld bead,which has no significant impact on the center of the previous adjacent weld bead and beyond;During multi-layer surfacing,when the next layer of weld bead is welded,it will cause higher temperature rise of the corresponding weld bead of the previous layer;The increase of welding heat input leads to the increase of the peak temperature of the weld bead,the expansion of the high temperature zone,and the increase of the temperature rise of the previous weld bead.

关 键 词：双相不锈钢 堆焊 温度场 数值模拟 

分 类 号：TG402[金属学及工艺—焊接]