REPAIR WELDING TECHNOLOGY FOR DESULFURIZATION RECYCLE PUMPS:INVESTIGATION AND APPLICATION

LI Taijiang; LI Wei; LI Yong; LIU Liying; WANG Bo; LU Pinzheng Xi'an Thermal Powe Research Institute Co.

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REPAIR WELDING TECHNOLOGY FOR DESULFURIZATION RECYCLE PUMPS:INVESTIGATION AND APPLICATION

更新时间：2025-09-28

- REPAIR WELDING TECHNOLOGY FOR DESULFURIZATION RECYCLE PUMPS:INVESTIGATION AND APPLICATION
- Thermal Power Generation Vol. 41, Issue 11, Pages: 27-30(2012)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG441.3
- Published：2012
- 稿件说明：
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LI Taijiang, LI Wei, LI Yong, et al. REPAIR WELDING TECHNOLOGY FOR DESULFURIZATION RECYCLE PUMPS:INVESTIGATION AND APPLICATION[J]. Thermal power generation, 2012, 41(11): 27-30.
DOI：

LI Taijiang, LI Wei, LI Yong, et al. REPAIR WELDING TECHNOLOGY FOR DESULFURIZATION RECYCLE PUMPS:INVESTIGATION AND APPLICATION[J]. Thermal power generation, 2012, 41(11): 27-30. DOI：

摘要

选取脱硫循环泵常用材料2205双相不锈钢为焊接母材

通过焊接工艺和性能试验

研发修复脱硫循环泵磨蚀损伤的焊接工艺。试验表明

焊缝组织结构为奥氏体和铁素体构成的两相组织;焊接接头抗拉强度为795MPa

屈服强度为580MPa;焊接接头经正弯、背弯后无裂纹

且具有良好的抗点蚀性能。采用上述焊接工艺对磨蚀损伤的脱硫循环泵叶轮进行修复后

部件型线恢复良好。

Abstract

Using 2205 duplex stainless steel

the common material for desulfurization recycle pump

as the welding base metal.Through welding process experiment

mechanical properties tests and corrosion behavior test

welding process for repair of abrasion damage in desulfurization recycle pump was developed.Results show that

the mixture of ferrite and austenite is the main microstructure of welding seam;the tensile and yield strength of welded joint is 795 MPa and 580 MPa

respectively;no cracks and corrosion pit are found on surface of the weld after bending and corrosion test.The in-field repaired impeller exhibits a profile line the same as a new one.

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