Welding Procedure and Joint Property of Corrosion Resistant Alloy C-22

SUN Xiusheng; LIU Hongyan; LI Weihua; DU Yongqin

doi:10.7512/j.issn.1001-2303.2023.11.14

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Welding Procedure and Joint Property of Corrosion Resistant Alloy C-22
Vol. 53, Issue 11, Pages: 90-95(2023)
Received：28 October 2022，

Revised：2023-03-10，

Published：25 November 2023
DOI： 10.7512/j.issn.1001-2303.2023.11.14
稿件说明：

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孙修圣，刘鸿彦，李卫华，等.C-22耐蚀合金的焊接工艺及接头性能［J］.电焊机，2023，53（11）：90-95. DOI： 10.7512/j.issn.1001-2303.2023.11.14.

SUN Xiusheng, LIU Hongyan, LI Weihua, et al.Welding Procedure and Joint Property of Corrosion Resistant Alloy C-22[J].Electric Welding Machine, 2023, 53(11): 90-95. DOI： 10.7512/j.issn.1001-2303.2023.11.14.

摘要

哈氏合金C-22为Ni-Cr-Mo合金，焊接时易产生结晶裂纹和气孔等缺陷。采用钨极氩弧焊和焊条电弧焊对厚度10 mm的C-22试板进行焊接工艺试验，通过无损检测、拉伸、弯曲、硬度、金相及腐蚀性能测试等手段对焊接接头的质量、性能及组织进行分析研究。结果表明：选用与母材匹配的ERNiCrMo-10焊丝和ENiCrMo-10焊条施焊，采用保护气体为99.5%Ar+5%H

的钨极氩弧焊打底，焊接接头抗拉强度高于母材的最低要求，焊接接头具有优异的塑、韧性及耐蚀性能，满足渣油加氢项目中催化剂反应器装置主体材料哈氏合金C-22的焊接及使用要求。

Abstract

Hastelloy C-22 is a Ni-Cr-Mo alloy. Defects such as crystal cracks and pores are easy to occur during the welding process. The welding process test was carried out on a HastelloyC-22 sample board with a thickness of 10 millimeters using GTAW and SMAW. Analyze and study the quality

performance

and microstructure of welded joints through non-destructive testing

tensile

bending

hardness

metallographic

and corrosion performance testing. The results showed that the welding was carried out using ERNiCrMo-10 welding wire and ENiCrMo-10 welding rod that matched the base material. The tungsten argon arc welding joint with a shielding gas of 99.5%Ar+5%H

had a tensile strength higher than the minimum requirements of the base material. The welded joint had excellent plasticity

toughness

and corrosion resistance

meeting the welding and usage requirements of Hastelloy C-22

the main material of the catalyst reactor device in the residue hydrogenation project.

关键词

Keywords

references

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