Research on additive repair special powder and process of 921 steel for marine equipment

WANG Yijia; LI Binzhou; DUAN Tao; ZHANG Dayue; SUN Ruiqi; LIU Baoquan

doi:10.7513/j.issn.1004-7638.2025.02.023

Volume 46 Issue 2

May 2025

Turn off MathJax

Article Contents

Article Navigation > IRON STEEL VANADIUM TITANIUM > 2025 > 46(2): 169-174, 181

WANG Yijia, LI Binzhou, DUAN Tao, ZHANG Dayue, SUN Ruiqi, LIU Baoquan. Research on additive repair special powder and process of 921 steel for marine equipment[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(2): 169-174, 181. doi: 10.7513/j.issn.1004-7638.2025.02.023

Citation:

WANG Yijia, LI Binzhou, DUAN Tao, ZHANG Dayue, SUN Ruiqi, LIU Baoquan. Research on additive repair special powder and process of 921 steel for marine equipment[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(2): 169-174, 181. doi: 10.7513/j.issn.1004-7638.2025.02.023

Citation:

PDF( 4264 KB)

Research on additive repair special powder and process of 921 steel for marine equipment

doi: 10.7513/j.issn.1004-7638.2025.02.023

WANG Yijia^{1, 2
,},
LI Binzhou^{1, 2},
DUAN Tao³,
ZHANG Dayue^{1, 2},
SUN Ruiqi²,
LIU Baoquan²

1.
State Key Laboratory of Metal Materials for Marine Equipment and Application, Anshan 114009, Liaoning, China
2.
Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China
3.
No.91697 Unit of PLA, Qingdao 266405, Shandong, China

Received Date: 2024-04-16
Publish Date: 2025-05-06

Abstract

Abstract

In this paper the specialized powder and supporting technology for laser additive manufacturing and repair on the surface of 921 steel had been investigated. By adjusting the alloy composition reasonably a spherical atomized powder with uniform size can be obtained through atomization process. A laser coaxial powder feeding equipment had been used for additive manufacturing on 921 steel substrate. As a result a well matched mechanical performance and macroscopic defect free cladding layer can be obtained, achieving the purpose of additive and repair on 921 steel substrate. Testing result indicates the mechanical properties of the repaired layer meet the relevant repair index requirements, the chemical composition remains consistent with the setting, and there are no defects such as cracking and layering. It has good machining performance, which helps to achieve autonomous repair of large marine structures and improve service reliability.
- 921 steel,
- additive manufacturing,
- laser,
- ocean,
- mechanical property

FullText(HTML)

References(13)

References

[1]	KOU R K. Study on high pressure dry underwater laser cladding repair technology and properties of 921A ship steel[D]. Beijing: Beijing Institute of Petrochemical Technology, 2022. (寇荣魁. 921A舰船钢高压干法水下激光熔覆修复工艺及性能研究[D]. 北京:北京石油化工学院, 2022. KOU R K. Study on high pressure dry underwater laser cladding repair technology and properties of 921A ship steel[D]. Beijing: Beijing Institute of Petrochemical Technology, 2022.
[2]	FANG Z G, LIU B, LI G M, et al. Requirement and development analysis of warship equipment materials system[J]. Materilas China, 2014,33(7):385-393. (方志刚, 刘斌, 李国明, 等. 舰船装备材料体系发展与需求分析[J]. 中国材料进展, 2014,33(7):385-393. FANG Z G, LIU B, LI G M, et al. Requirement and development analysis of warship equipment materials system[J]. Materilas China, 2014, 33（7）: 385-393.
[3]	HART P, RICHARDSON I M, NIXON J H. The effects of pressure on electrical performance and weld bead geometry in high pressure GMA welding[J]. Welding in the World, 2001, 45: 25-33.
[4]	ZHU D F, ZHU J L, JIAO X D, et al. Microstructure and mechanical properties of 921A steel welding joint by laser-MAG hybrid welding[J]. Welding & Joining, 2022(9): 25-29, 42. (朱东芳, 朱加雷, 焦向东, 等. 921A钢激光-MAG复合焊接头组织及性能[J]. 焊接, 2022(9): 25-29, 42. ZHU D F, ZHU J L, JIAO X D, et al. Microstructure and mechanical properties of 921A steel welding joint by laser-MAG hybrid welding[J]. Welding & Joining, 2022(9): 25-29, 42.
[5]	GARASIC I, KRALJ S, KOZUH Z, et al. Analysis of underwater repair technology on the jack-up platform spud can[J]. Brodogradnja, 2010, 61(2): 153-160.
[6]	WOODWARD N, KNAGENHELM H O, BERGE J O, et al. Hyperbaric GMA welding for contingency repair using a fillet welded sleeve at 1 000 m water depth[C]. Proceedings of the International Offshore and Polar Engineering Conference, 2007:3403.
[7]	KARATZAS V A, KOTSIDIS E A, TSOUVALIS N G, et al. Experimental fatigue study of composite patch repaired steel plates with cracks[J]. Applied composite materials, 2015, 22(5): 507-523.
[8]	HAN L G, WU X M, CHEN G D, et al. Local dry underwater welding of 304 stainless steel based on a microdrain cover[J]. Journal of Materials Processing Technology, 2019,268:47-53. doi: 10.1016/j.jmatprotec.2018.12.029
[9]	SHAO C L, XIAO J L, ZHU J L, et al. Research on surface repair technology of laser wire-filled cladding and verification on pressure environment[J]. Journal of Beijing Institute of Petrochemical Technology, 2021,29(4):14-18. (邵长磊, 肖镌璐, 朱加雷, 等. 激光填丝熔覆表面修复工艺研究及压力环境验证[J]. 北京石油化工学院学报, 2021,29(4):14-18. SHAO C L, XIAO J L, ZHU J L, et al. Research on surface repair technology of laser wire-filled cladding and verification on pressure environment[J]. Journal of Beijing Institute of Petrochemical Technology, 2021, 29（4）: 14-18.
[10]	SUN G, WANG Z, LU Y, et al. Underwater laser welding/cladding for high-performance repair of marine metal materials: A review[J]. Chinese Journal of Mechanical Engineering, 2022(1): 35.
[11]	MAKIHARA Y, MIWA Y, HIROSE N, et al. The application of the welding technique at fillet groove by the YAG-laser repair-welding robot for underwater environment[C]. 12th International Conference on Nuclear Engineering, 2004, 2, 149-155.
[12]	SRIDAR S, ZHAO Y, LI K, et al. Post-heat treatment design for high-strength low-alloy steels processed by laser powder bed fusion[J]. Materials Science & Engineering, A. 2020,788: 139531.
[13]	RODRIGUES T A, DUARTE V R, TOMÁS D, et al. In-situ strengthening of a high strength low alloy steel during wire and arc additive manufacturing (WAAM)[J]. Additive Manufacturing, 2020, 34: 101200.