14MnMoNbB钢低匹配专用焊条J607DP的研制
Development of Specific Low-matched Electrode J607DP for 14MnMoNbB Steel
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- DOI:
- 作者:
- 孙咸, 王宝
SUN Xian
- 作者单位:
- 太原理工大学焊接材料研究所, 山西太原 030024
Welding Materials Institute of Taiyuan University of Technology, Taiyuan, Shanxi 030024
- 关键词:
- 低合金高强钢;专用焊条;低匹配;研究
low alloy high strength steel;specific electrode J607DP;low-matched;14MnMoNbB steel;research
- 摘要:
- 采用高速摄影、焊条工艺性试验、斜Y形坡口裂纹试验等方法,研究了CaO-CaF2渣系焊条工艺性影响因素及机理,实测了专用焊条的抗裂性、扩散氢含量及接头的匹配性能等指标。结果表明:①合理控制药皮中碳酸盐与萤石的比值和总量,控制铁粉的加入量,可有效抑制焊接飞溅,明显改善坡口脱渣性;②专用焊条具有的“粗熔滴短路少爆炸过渡”形态,受“弧桥并存”过渡过程控制;③研制的专用焊条具有超低氢、高韧性、高抗裂性和优良的综合工艺性能。
The influential factors and their mechanism on the usability of CaO-CaF2 slag system electrode are investigated and the quality index such as crack-resistance, diffusible hydrogen content and joint matching property of the specific electrode are measured by means of high-speed photography, test of the electrode usability, and crack testing of inclined Y-shaped groove,etc. The results show that (1) the spatter can be effectively restrained by controlling the ratio of carbonate to fluorite and their total amount in the coating properly and the addition of iron powder, the slag detachability can be improved distinctly; (2) " the coarse droplets short-circuit and less explosion transfer" of the specific electrode is controlled by transition process of "coexistence of arc and slag bridge"; (3) the specific electrode possesses super-low hydrogen content, high toughness, high crack-resistance and the prominent comprehensive usability.2004,2(2): 35-38 收稿日期：2003-2-28分类号：TG422作者简介：孙咸(1941-),男,教授,长期从事焊接材料及金属焊接性方面的研究和教学工作;获国家科技进步二等奖1项(2000年),省(部)级科技进步一等奖2项、二等奖3项,发表学术论文70余篇;1992年获国务院颁发的政府特殊津贴.参考文献：
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