Laser Welding of HR-2 Hydrogen-Resistant High-Strength Steel Pipes: Process Parameters and Mechanical Properties

ZHANG Chengxi; TU Hua; JIANG Junjun; ZHOU Xiaohui; LIU Fuyun; XU Fujia; HAN Xiaohui; WU Pengbo; TAN Caiwang

doi:10.7512/j.issn.1001-2303.2026.08.03

Quality and Efficiency in High\-Strength Steel Welding | Views : 0 下载量: 23 CSCD: 0

PDF
Export
Share
Collection
Album

Laser Welding of HR-2 Hydrogen-Resistant High-Strength Steel Pipes: Process Parameters and Mechanical Properties
Vol. 56, Issue 8, Pages: 32-41(2026)
Received：01 July 2026，

Revised：2026-08-09，

Published：20 August 2026
DOI： 10.7512/j.issn.1001-2303.2026.08.03
稿件说明：

移动端阅览

张成蹊，涂画，蒋俊俊，等.HR-2抗氢高强钢管激光焊接工艺及力学性能研究［J］.电焊机，2026，56（8）：32-40. DOI： 10.7512/j.issn.1001-2303.2026.08.03.

ZHANG Chengxi, TU Hua, JIANG Junjun, et al.Laser Welding of HR-2 Hydrogen-Resistant High-Strength Steel Pipes: Process Parameters and Mechanical Properties[J].Electric Welding Machine, 2026, 56(8): 32-40. DOI： 10.7512/j.issn.1001-2303.2026.08.03.

摘要

针对HR-2抗氢高强钢管止口结构激光焊接中熔透控制和缺陷抑制要求较高的问题，采用+2 mm离焦激光焊接工艺，研究了焊接速度（1.0~2.0 m/min）和激光功率（800~1 400 W）对接头成形质量、内部缺陷、显微组织及拉伸性能的影响规律。结果表明，在试验参数范围内均可获得连续焊缝，截面呈典型“酒杯型”深熔焊形貌。结合止口高度2.2 mm和管壁厚度2.88 mm，选取熔深适中的S1、S2和S3三组工艺进行对比。S2工艺（1.5 m/min、1 300 W）焊缝表面较平整，熔深适中，X射线检测和纵截面观察未见明显缺陷；S1工艺止口附近存在局部未熔合或未完全熔透风险；S3工艺出现少量气孔倾向。焊缝组织主要为奥氏体柱状晶和树枝晶，熔合线及止口附近因冷却速度较快保留少量残余δ-铁素体。S2接头抗拉强度和断后伸长率分别为728 MPa和37.6%，断口内、外侧均以韧窝形貌为主，表现出较好的强塑性匹配。

Abstract

To meet the requirements for penetration control and defect suppression in laser welding of HR-2 hydrogen-resistant high-strength steel pipes with stepped-groove joints

a laser welding process with a defocusing distance of +2 mm was adopted. The effects of welding speed and laser power on weld formation

defects

microstructure and tensile properties were investigated. The results show that continuous welds can be obtained within the tested parameter range

and the weld cross-sections exhibit a typical wine-glass-shaped deep-penetration morphology. Considering the stepped-groove height of 2.2 mm and the pipe wall thickness of 2.88 mm

three representative parameter sets with moderate penetration depth

namely S1

S2 and S3

were selected for comparison. The S2 condition (1.5 m/min

1 300 W) produces a relatively smooth weld surface

moderate penetration depth and no obvious defects according to X-ray inspection and longitudinal-section observation. The S1 condition shows a risk of local incomplete fusion or insufficient penetration near the stepped-groove root

whereas the S3 condition exhibits a slight tendency toward pore formation. The weld microstructure is mainly composed of austenitic columnar and dendritic grains

with a small amount of residual δ-ferrite retained near the fusion line and stepped-groove root owing to the relatively high cooling rate. The S2 joint shows a tensile strength of 728 MPa and an elongation of 37.6%

and both the inner and outer fracture surfaces are dominated by dimples

indicating a good strength-ductility balance.

关键词

Keywords

references

赵卫君，徐祥久 . Q345R（R-HIC）抗氢钢的焊接工艺研究［J］. 金属加工（热加工）， 2020 （ 8 ）： 26 - 28 .

ZHAO W J ， XU X J . Research on welding technology of Q345R（R-HIC） hydrogen resistant steel ［J］. MW Metal Forming ， 2020 （ 8 ）： 26 - 28 .

陈坤，傅延波，仲继彬，等 . Q345R（R-HIC）抗氢钢高压容器制造工艺及质量控制［J］. 石油和化工设备， 2024 ， 27 （ 7 ）： 18 - 20 .

CHEN K ， FU Y B ， ZHONG J B ， et al . Manufacturing process and quality control of Q345R（R-HIC） anti-hydrogen steel pressure vessels ［J］. Petro & Chemical Equipment ， 2024 ， 27 （ 7 ）： 18 - 20 .

陈保国，史维琴，李晓龙 . 循环氢脱硫塔用Q345R（R-HIC）钢焊接工艺评定［J］. 电焊机， 2015 ， 45 （ 12 ）： 145 - 148 .

CHEN B G ， SHI W Q ， LI X L . Welding procedure qualification of Q345R（R-HIC） steel for circulating hydrogen desulfurization tower ［J］. Electric Welding Machine ， 2015 ， 45 （ 12 ）： 145 - 148 .

王群，余洋，钱志强 . 基于响应面法的HR-2抗氢钢电子束插接焊工艺参数优化［J］. 焊接学报， 2023 ， 44 （ 4 ）： 50 - 57 .

WANG Q ， YU Y ， QIAN Z Q . Optimization of electron beam plug welding parameters of HR-2 hydrogen-resistant steel based on response surface method ［J］. Transactions of the China Welding Institution ， 2023 ， 44 （ 4 ）： 50 - 57 .

LIU H K ， ZHAO J ， HAN K ， et al . Comparative study on microstructure and properties of HR-2 anti-hydrogen steel weld joints with different section shapes by vacuum electron beam welding ［J］. Journal of Materials Research and Technology ， 2024 ， 30 ： 9343 - 9354 .

王泽鹏，唱通，白正军 . 激光焊接技术在新能源汽车电机制造领域的应用及发展［J］. 金属加工（热加工）， 2015 （ 4 ）： 33 - 34 .

WANG Z P ， CHANG T ， BAI Z J . Application and development of laser welding technology in the manufacturing field of new energy vehicle motors ［J］. MW Metal Forming ， 2015 （ 4 ）： 33 - 34 .

吴会强，冯吉才，何景山，等 . 电子束焊接过程温度应力场三维有限元仿真［J］. 焊接技术， 2004 ， 33 （ 6 ）： 10 - 12 .

WU H Q ， FENG J C ， HE J S ， et al . Three-dimensional finite element simulation of temperature and stress fields during electron beam welding ［J］. Welding Technology ， 2004 ， 33 （ 6 ）： 10 - 12 .

邹宏琨 . 激光焊接技术的应用与发展［J］. 山东工业技术， 2015 （ 7 ）： 79 .

ZOU H K . Application and development of laser welding technology ［J］. Shandong Industrial Technology ， 2015 （ 7 ）： 79 .

雷华东，余洋，王亚荣 . 激光焊接HR-2抗氢不锈钢的性能及组织［J］. 焊接技术， 2012 ， 41 （ 1 ）： 8 - 12 .

LEI H D ， YU Y ， WANG Y R . Properties and microstructure of laser welded HR-2 hydrogen-resistant stainless steel ［J］. Welding Technology ， 2012 ， 41 （ 1 ）： 8 - 12 .

雷华东，黄文荣，郭鹏，等 . 抗氢不锈钢的激光焊接性及气孔成因初探［J］. 焊接技术， 2002 ， 31 （ 3 ）： 8 - 10 .

LEI H D ， HUANG W R ， GUO P ， et al . Preliminary study on laser weldability and porosity formation of hydrogen-resistant stainless steel ［J］. Welding Technology ， 2002 ， 31 （ 3 ）： 8 - 10 .

刘航天，王群，雷华东，等 . 05Cr17Ni4Cu4Nb/HR-2异种钢激光焊接接头组织及力学性能研究［J］. 应用激光， 2024 ， 44 （ 10 ）： 102 - 110 .

LIU H T ， WANG Q ， LEI H D ， et al . Microstructure and mechanical properties of 05Cr17Ni4Cu4Nb/HR-2 dissimilar steel laser welded joints ［J］. Applied Laser ， 2024 ， 44 （ 10 ）： 102 - 110 .

贡一峰，李敬勇，林靖宇，等 . 基于正交试验的TC4钛合金激光焊工艺优化研究［J］. 精密成形工程， 2024 ， 16 （ 5 ）： 11 - 20 .

GONG Y F ， LI J Y ， LIN J Y ， et al . Optimization of laser welding process for TC4 titanium alloy based on orthogonal experiment ［J］. Journal of Netshape Forming Engineering ， 2024 ， 16 （ 5 ）： 11 - 20 .

Alert me when the article has been cited

提交

Microstructure and Mechanical Properties of Friction Pull Plug Welded Joint for 2219 Aluminum using Large Axial Welding Force and Low Rotational Speed

Study on the Process and Performance of Copper/Stainless Steel Fillet Laser Welding

Study on the Quality Control of Arc Crater in Laser Welding Girth Weld

Effect of Laser Power on Temperature Field and Joint Microstructure and Properties in Laser-MIG Hybrid Welding of Q890 Steel

Effects of Welding Thermal Cycle and Post-Weld Aging on the Microstructure and Mechanical Properties of GH2070P Fe-Ni-Based Superalloy Welded Joints