Research on the welding process of 590MPa grade high strength automobile beam steel

摘要：

590 MPa automobile beam steel strips are used mainly to manufacture the longitudinal beam of trucks. It’s welding properties are critical to the safety of truck. The microstructure and mechanical properties of welding joints processed by co2 arc welding with different welding parameters were studied. The results showed that the welding joints were weak when welding heat input were small and the non metal inclusions were found in the weld joints when welding heat input are big. The quality of the welding joints is good enough at 170A of the arc current and 24V of the arc voltage. Keeping the other welding parameters fixed, the incomplete fusion defect occurred in the welding joint with backward welding, but the quality of the welding joint is good with forward welding.

关键词： automobile beam steel co2 arc welding welding process

作者: ZHANG Wu HU Xue-wen LIU Yong-gang YANG Xing-liang ZHANG Jian

作者单位: Technological Center, Maanshan Iron & Steel Co., Ltd., Maanshan, Anhui Province, 243000

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 453-456

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）