| Related citation: | Lijun Han,Pengyu Lin,Gengwei Zhang,Lihui Zhong,Changhua Liu.Study on Relationship Between Arc Behavior and Joint Forming in Cold Metal Transfer Welding Technology with Polarity-Exchanging[J].Journal of Harbin Institute Of Technology(New Series),2020,27(5):81-86.DOI:10.11916/j.issn.1005-9113.19010. |
|
| Author Name | Affiliation | | Lijun Han | FAW-Volkswagen Automotive Co., Ltd., Changchun 130011, China | | Pengyu Lin | FAW-Volkswagen Automotive Co., Ltd., Changchun 130011, China | | Gengwei Zhang | FAW-Volkswagen Automotive Co., Ltd., Changchun 130011, China | | Lihui Zhong | FAW-Volkswagen Automotive Co., Ltd., Changchun 130011, China | | Changhua Liu | FAW-Volkswagen Automotive Co., Ltd., Changchun 130011, China |
|
| Abstract: |
| Cold metal transfer with polarity-exchanging is a new integrated welding technology based on MIG. Due to the alternation of the positive and negative polarities of the wire, favorable control upon the deposition rate and the welding shape coefficient was obtained in order to meet the desired joint design, and the related controlling principles and joint characteristics were reported. Droplet transfer physical behavior exhibited strong dependability on the studied welding parameters, such as welding voltage, welding current, wire feeding speed, and polarity-exchanging. This welding technology provides a new way for the welding of body-in-white (BIW) thin sheet with special demands. Moreover, the typical quality defects of MIG were greatly improved. Our study provides important technical information from the perspective of industrial application of MIG and sheds light on the higher application level of MIG in BIW welding. |
| Key words: MIG cold metal transfer polarity-exchanging arc behavior joint shape coefficient |
| DOI：10.11916/j.issn.1005-9113.19010 |
| Clc Number:TG444 |
| Fund: |
|
| Descriptions in Chinese: |
| 变极性冷金属过渡焊接技术电弧行为与接头成形关系研究 韩立军*, 林鹏宇, 张更伟, 钟丽慧，刘昌华 （一汽-大众汽车有限公司，长春 130011） 创新点说明：1）首次系统分析了变极性CMT的原理和焊接参数变化规律； 2）对变极性CMT焊接电弧微观行为进行了对比分析； 3）对变极性CMT铝合金的焊接性做了相应的分析，如通过极性变化而发生的阴极雾化作用对接头性能影响等等。 关键词: MIG; 冷金属过渡; 变极性; 电弧行为; 接头成型系数 |
