摘要
针对蒸汽发生器用SA-508Gr.3Cl.2钢配套焊条大多依赖进口的现状,开展了SA-508Gr.3Cl.2钢配套焊条J607HR的研制工作。结果表明,通过合理调整焊条药皮中的碳酸盐、氟化物和铁合金的比例,当CaCO 3/CaF 2为2.0~2.4,总量为58%~62%,铁合金比例较高时,能够获得良好的工艺性能。焊缝成形美观,脱渣容易,飞溅小,电弧稳定,可以实现平焊和立焊焊接,并且具有优良的力学性能。
Aiming at the current situation that the welding of the steam generator SA-508Gr.3Cl.2 steel depends on the imported electrodes,covered electrode J607HR for SA-508Gr.3Cl.2 steel was studied.The results shown that properly by adjusting the proportion of carbonate,fluoride and ferroalloy in the coating of the electrode with 2.0-2.4 ratio of CaCO 3/CaF 2 and 58%-62%total amount,the proportion of the ferroalloy is high,good process performance can be obtained.The weld is beautifully formed,the slag removal is easy,the splash is small,the arc is stable.The flat welding and the vertical welding can be realized.Deposited metal has excellent mechanical properties.
作者
孙婷婷
王猛
陈波
张学刚
宋立群
Sun Tingting;Wang Meng;Chen Bo;Zhang Xuegang;Song Liqun(Harbin Welding Institute Limited Company,Harbin 150028,China;Harbin Well Welding Co.,Ltd.,Harbin 150028,China)
出处
《机械制造文摘（焊接分册）》
2020年第1期23-26,35,共5页
Welding Digest of Machinery Manufacturing
基金
国家重点研发计划重点专项(2017YFB0305303)。
关键词
蒸汽发生器
焊条
全位置焊接
steam generator
covered electrode
all-position welding
