0.3 mm厚316奥氏体不锈钢的高频感应焊接技术

doi:10.11896/cldb.20090158

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Abstract Ahigh-speed high-frequency induction welding technology was used to weld a 316 austenitic stainless steel pipe with a wall thickness of 0.3 mm, and themacroscopic morphology, weld structure and mechanical properties of welded pipe joints under different high-frequency induction welding parameters were studied. The results show that in order to ensure the good weld formability of thin-walled 316 austenitic stainless steel under high-frequency induction welding conditions, the burrs formed on both sides of the weld must be continuous and consistent, and the heat input and extrusion must match, when the heat input increases, the amount of extrusion should decrease, and when the amount of extrusion increases, the heat input should decrease. When the welding heat input is 49.5 KJ/m and the extrusion amount is 0.36mm, the macroscopic surface of the joint is well formed and the grains in the weld zone are fine. The microstructure of the weld is dominated by austenite and δ-ferrite, and the weld hardness can reach more than 300HV, which is significantly increased compared with the base metal matrix hardness (236HV), which is the result of the refinement of weld grains.

Key words： thin-walled 316 stainless austenitic steel high frequency induction welding microstructure welding technology

Published: 25 November 2021 Online: 2021-12-13

CLC number:

TG456.9

Fund:National Natural Science Foundation of China (51771071).

About author: Chao Wangreceived his B.E. degree from Shenyang University in June 2018. He is currently a postgraduate in the School of Materials and Chemical Engineering,Hubei University of Technology .He is under the supervision of Prof. Shijie Dong and Ph.D. Zhixiong Xie and Ph.D. Ping Luo.His research interest is the high frequency induction welding technology of thick 316 austenitic stainless steel.
Zhixiong Xiereceived his Ph.D. degree from Shanghai Jiaotong University in 2012.He is the vice director of Department of Material Forming and Control Enginee-ring,Hubei University of Technology.He is a project leader of National Natural Science Foundation of Hubei Province and participated in several research projects of the National Natural Science Foundation of China.His researches focus on the preparation,microstructure and properties of high strength and high conductivity copper alloys,and the hydrogen generation with Al-water splitting reaction,and the high frequency induction welding of ultra-thin titanium tube and stainless steel tube.

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	WANG Chao
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	XIAO Shuguang
	DONG Shijie
	XIE Jianying

Cite this article:

WANG Chao,XIE Zhixiong,LUO Ping, et al. The High Frequency Induction Welding Technology of 316 Austenitic Stainless Steel with 0.3 mm Thickness[J]. Materials Reports, 2021, 35(22): 22132-22136.

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http://www.mater-rep.com/EN/10.11896/cldb.20090158 OR http://www.mater-rep.com/EN/Y2021/V35/I22/22132

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