Research on the Welding Process of High Temperature Resistant Stainless Steel 316H and Chromium Molybdenum Steel F22

JIANG Yuchen; LI En; JIANG Guoyan; HE Bing

doi:10.7512/j.issn.1001-2303.2025.06.15

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Research on the Welding Process of High Temperature Resistant Stainless Steel 316H and Chromium Molybdenum Steel F22
Vol. 55, Issue 6, Pages: 112-117(2025)
Received：03 September 2024，

Revised：2025-04-07，

Published：20 June 2025
DOI： 10.7512/j.issn.1001-2303.2025.06.15
稿件说明：

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蒋宇晨，李恩，江国焱，等.耐高温不锈钢316H与铬钼钢F22对接焊接工艺研究［J］.电焊机，2025，55（6）：112-117. DOI： 10.7512/j.issn.1001-2303.2025.06.15.

JIANG Yuchen, LI En, JIANG Guoyan, et al.Research on the Welding Process of High Temperature Resistant Stainless Steel 316H and Chromium Molybdenum Steel F22[J].Electric Welding Machine, 2025, 55(6): 112-117. DOI： 10.7512/j.issn.1001-2303.2025.06.15.

摘要

针对高温液态钠介质下SA-336M Gr.F22 Cl.1与SA-182M F316H的异种钢对接接头，从焊接材料选用、焊接坡口结构设计、焊接工艺参数制定等方面对其开展了深入研究，通过选用CHG-1625HRK和ER316H两种不锈钢焊丝作为隔离层堆焊和接头对接填充金属，确定了异种钢对接接头的焊接工艺，并对其接头进行了力学性能和金相组织的研究。结果表明：采用CHG-1625HRK作为隔离层可以将含碳量高的铬钼钢顺利过渡到碳含量低的不锈钢，采用ER316H作为填充金属可以获得组织稳定、性能良好的焊接接头，同时为该工艺在相关项目的接管与安全端对接接头的制造奠定了基础。

Abstract

In this paper

the dissimilar steel butt joint of SA-336M Gr.F22Cl.1 and SA-182M F316H was studied in depth from the aspects of welding material selection

groove design and welding process parameter formulation. By selecting CHG-1625HRK and ER316H stainless steel welding wires as the filler metal of buttering layer and butt joint

the welding process of dissimilar steel butt joint was then determined

and the mechanical properties and metallography of the joint were studied as well. The results indicate the buttering layer made by CHG-1625HRK could smoothly transition the high-carbon chromium molybdenum steel to the low-carbon stainless steel

and ER316H could be used as the filler metal to achieve a joint with stable structure and prominent performance

meanwhile

it has been laid a foundation for the fabrication of the butt joint of pipe and safety-end for relevant projects.

关键词

Keywords

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