ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2023, Vol. 44 ›› Issue (2): 37-42.DOI: 10.20057/j.1003-8620.2022-00005

• 工艺技术 • 上一篇    下一篇

焊接用双相不锈钢ER2209线材的生产实践

李 立1 , 季灯平1 , 马振宇1 , 严道聪1 , 胡梅青2 , 王贞应2 , 谢东西2   

  1. 1. 浙江青山钢铁有限公司,丽水 323900;
    2. 瑞浦科技特种钢研究院,丽水 323900;
  • 收稿日期:2022-09-08 出版日期:2023-04-01 发布日期:2023-03-27
  • 通讯作者: 季灯平
  • 作者简介:李立(1985-),男,硕士,高级工程师;E-mail:lili@ruipt.com

Production Practice of Duplex Stainless Steel Wire Rods ER2209 for Welding Application

Li Li1 , Ji Dengping1 , Ma Zhenyu1 , Yan Daocong1 , Hu Meiqing2 , Wang Zhenying2 , Xie Dongxi2   

  1. 1. Zhejiang Qingshan iron and Steel Co.,Ltd., Lishui 323900;
    2. Ruipu Technology Special Steel Research Institute, Lishui 323900;
  • Received:2022-09-08 Published:2023-04-01 Online:2023-03-27
  • Contact: Ji Dengping

摘要: 通过对焊接用双相不锈钢ER2209线材生产实践过程中的冶炼、轧制、固溶及酸洗工艺的研究,结果表明: 最佳的热加工温度为1000~1050℃,可有效避免α相析出导致的轧制开裂;热处理温度为1050~1100℃,材料的强度较低,塑性较高,冷拉拔性能优异;采用(H2SO4+HF)溶液预处理及(HNO3+HF)混酸洗的工艺进行酸洗, 线材表面质量优异,无酸洗晶间腐蚀。

关键词: ER2209线材, 双相不锈钢, σ相析出, 固溶处理, 酸洗

Abstract: The process of smelting,rolling,solution and pickling of duplex stainless steel ER2209 wire rods for butt welding was studied. The results show that the optimum hot working temperature was 1000- 1050 ℃,which can effectively avoid the rolling cracks caused by σ phase precipitation. The heat treatment temperature was 1050- 1100 ℃,the strength of the material was low, the plasticity was high,and the cold drawing performance is excellent. The process of(H2SO4+HF) solution pretreatment and (HNO3+HF)mixed pickling was used for pickling. The wire surface quality was excellent with- out pickling intercrystalline corrosion.

Key words: ER2209 Wire Rods, Duplex Stainless Steel, σ Phase Precipitation, Solution Treatment, Pickling.