电焊机2018，Vol.48Issue(5)：1-8,8.DOI:10.7512/j.issn.1001-2303.2018.05.01
极性对埋弧焊工艺质量的影响
Influence of electrode polarity on the usability quality of submerged arc welding
孙咸1
作者信息
- 1. 太原理工大学焊接材料研究所,山西太原030024
- 折叠
摘要
Abstract
The polarity and its influences on the usability quality of submerged arc welding were reviewed.The results show that The arc shape is different during DCEP and AC,the metal transfer type is not completely changed by polarity,but the droplet diameter and droplet detachment frequency are different.Although the polarity has some influence on the porosity of submerged arc weld,but the control of moisture in the flux is the most important measures to prevent porosity.The polarity significantly affects the weld geometry,there are HAZ and dilution values in straight polarity are less than in reverse polarity,but since the fluxes used are not the same,different results may be produced.The influence of polarity on the mechanical properties of weld metal of SAW is quite complex.In the waveform control technology,variable polarity submerged arc welding power can significantly improve the deposition efficiency and welding speed,easy to control the penetration and weld shape,to bring a new concept of submerged arc welding field.关键词
极性/埋弧焊/工艺质量/变极性技术/影响Key words
polarity/submerged arc welding/usability quality/variable polarity technology/effect分类
矿业与冶金引用本文复制引用
孙咸..极性对埋弧焊工艺质量的影响[J].电焊机,2018,48(5):1-8,8.
