摘要
通过采用不同焊接线能量下材料规格为φ219×30的P91耐热钢采用钨极氩弧(TIGW)打底+焊条电弧焊(SMAW)填充盖面后,对焊缝及热影响区的抗拉强度、冲击韧度、硬度的力学性能和金相组织分析,实验结果得出以下结论,(TIGW)焊线能量为7~12KJ/cm+(SMAW)填充盖面焊线能量为15~20 KJ/cm时,焊缝金属及热影响区力学性能优良,满足使用要求,焊缝组织回火索氏体组织。
By means of material specifications under the different welding line energy for phi 219 x 30 P91 heat-resistant steel using tungsten electrode argon arc（TIGW） base ＋ electrode arc welding（SMAW） after filling covering of welding seam and heat affected Ou De Kang tensile strength, impact toughness, hardness, mechanical properties and microstructure of the analysis of the experimental results, the following conclusions（TIGW） welding line energy is 7 ~ 12 KJ/cm ＋（SMAW） covering filled welding line energy for 15 ~ 20 KJ/cm, the weld metal and haz excellent mechanical performance, meets the requirement, the weld microstructure of tempered sorbite organization.
出处
《世界有色金属》
2017年第2期43-44,共2页
World Nonferrous Metals
基金
嘉峪关市冶金技术重点实验室(项目编号15-14)
350MW机组主蒸汽管道-T/P91焊接工艺研究(项目编号15-19)
关键词
耐热钢
焊接线能量
力学性能
显微组织
heat resistant steel
welding line energy
mechanical properties
microstructure
