焊管2011，Vol.34Issue(5)：20-23,4.
焊材对螺旋缝预精焊管焊缝组织和性能的影响
The Effect of Welding Material on Weld Microstructure and Properties of Spiral Two-step Welding Pipe
摘要
Abstract
Aim at the problem of L450 steel weld impact property which occurred in mass production spiral two-step welding pipe,using the welding wire with higher contents of Cr,Ni,Ti-and other elements to conduct welding,weld sample was taken out through different welding match,the microstructure and mechanical properties were analyzed, the results indicated that the total quantity of proeutectoid ferrite distributed in both sides of column crystal was reduced after replacing welding wire. The weld microstructure mainly included acicular ferrite,the grain of acicular ferrite (AF), proeutectoid ferrite (PF)was finer,its impact toughness value was obviously increased.关键词
螺旋缝预精焊/焊材成分/先共析铁素体/针状铁素体/冲击韧性Key words
spiral two-step welding pipe/welding material component/proeutectoid ferrite (PF)/acicular ferrite (AF) /impact toughness分类
矿业与冶金引用本文复制引用
刘文友,张晓强..焊材对螺旋缝预精焊管焊缝组织和性能的影响[J].焊管,2011,34(5):20-23,4.
