基于SMAW高温熔池流动的元素分布  

Elements Distributions of High-Temperature Weld Pool Using SMAW

作　　者：童莉葛[1,2] 谷京晨 刘永旭[1] 黎磊[1] 王立[1,2] 白芳[3] 白世武[3] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]北京市高效节能与环保工程研究中心,北京100083 [3]中国石油天然气管道科学研究院,廊坊065000

出　　处：《工程热物理学报》2015年第5期1120-1124,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51206010);国家重点基础研究发展计划项目(973项目)(No.2012CB720406);中央高校基本科研业务费专项(No.FRF-SD-12-013A);国家留学基金(No.CSC201306465017)

摘　　要：本文对比了焊炬摆动对熔池内部流动和元素分布规律的影响。焊炬无摆动时元素分布呈双峰型,峰值位置在熔池中心左右3 mm处;熔池中心Mn、Mo、Ni和Cr含量较高,分别为1.298%、0.149%、0.146%和0.011%;旋涡中心C、Si、P和S含量最大,分别为0.048%、0.260%、0.014%和0.009%。焊炬摆动时元素分布呈单峰型;熔池中心C、Si、P和S含量最高,分别为0.050%、0.270%、0.016%和0.010%;熔池中心Mn、Mo、Ni和Cr含量最低,分别为1.121%、0.063%、0.062%和0.005%。Impacts of welding torch moving on fluid flow and elements distributions of weld pool were investigated.When welding torch is static,the distribution of elements is typical double peak trend.The distance between peaks and the center of weld pool is 3 mm.At the center of weld pool,the contents of Mn,Mo,Ni and Cr are highest,which contents are 1.298%,0.149%,0.146%and 0.011%,respectively.At the vortex,the contents of C,Si,P and S are highest,which contents are 0.048%,0.260%,0.014%and 0.009%,respectively.When welding torch is moving,distribution of elements is single-peaked trend.The contents of C,Si,P and S are highest,which contents are 0.050%,0.270%,0.016%and 0.010%,respectively.At the center of weld pool,the contents of Mn,Mo,Ni and Cr are lowest,which contents are 1.121%,0.063%,0.062%and 0.005%.

关 键 词：元素分布 MARANGONI效应 相变 传热 高温熔池 

分 类 号：TG444.1[金属学及工艺—焊接]