焊管2024，Vol.47Issue(9)：51-56,6.DOI:10.19291/j.cnki.1001-3938.2024.09.009
惰性气体保护HFW焊管焊接工艺的研究
Research on Inert-gas Protection HFW Welding Process
左兰兰 1蔡绪明 1周华建 1卢卫卓2
作者信息
- 1. 中石化石油机械股份有限公司沙市钢管分公司,湖北 荆州 434001
- 2. 北京隆盛泰科石油管科技有限公司,北京 100101
- 折叠
摘要
Abstract
In order to study the influence of inert gas protection welding on HFW welding performance,different welding process tests of HFW welding pipe with Φ610 mm×14.3 mm steel grade L360M were carried out.The mechanical properties,quantity,size and content of oxides in the weld without inert gas protection and with Ar gas protection were compared and analyzed.The results show that with or without inert gas protection,the tensile,impact,flattening and hardness performances of the weld are not obvious changed.When Ar gas protection was added,the average length of oxide in the weld decreased from 8.7 μm to 6.7 μm,the average area decreased from 35.1 μm2 to 21.5 μm2,the oxide length range of 0～5 μm increased from 80%to 89%,and the oxide area ratio decreased from 123.1 μm²/mm² to 88.1 μm²/mm².The results show that the high-frequency welding process with Ar protection can significantly reduce the size and content of oxide in the weld,but the two welding processes have no obvious impact on the mechanical properties of the weld,and both meet the requirements of pipe making standards.关键词
焊接钢管/高频焊接/Ar气保护焊/焊缝氧化物夹杂Key words
welded pipe/HFW/Ar gas protection welding/weld oxide inclusion分类
矿业与冶金引用本文复制引用
左兰兰,蔡绪明,周华建,卢卫卓..惰性气体保护HFW焊管焊接工艺的研究[J].焊管,2024,47(9):51-56,6.
