[ Article ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 33, No. 5, pp.239-244

ISSN: 2508-5107 (Online)

Print publication date 15 Oct 2024

Received 03 Sep 2024 Revised 30 Sep 2024 Accepted 02 Oct 2024

DOI: https://doi.org/10.7735/ksmte.2024.33.5.239

전자제품 Cu 방열 모듈 배관 접합을 위한 멀티 코어 레이저 용접 공정 연구

이찬양^a^{, b} ; 오민철^b ; 고임현^c^{, d} ; 안병민^a^{, e}^{, *}

Multi-core Laser Welding Process for Joining Cu Heat Dissipation Module Pipes in Electronic Products

Chanyang Lee^a^{, b} ; Minchul Oh^b ; Imhyon Ko^c^{, d} ; Byungmin Ahn^a^{, e}^{, *}

aDepartment of Materials Science and Engineering, Ajou University
bAI & Mechanical System Center, Institute for Advanced Engineering
cCorporate Research Center, Samwon Dongwan
dDepartment of Mechanical Systems Engineering, Gyeongsang National University
eDepartment of Energy Systems Research, Ajou University

Correspondence to: ^*Tel.: +82-31-219-3531 E-mail address: byungmin@ajou.ac.kr (Byungmin Ahn).

Abstract

As electronic components demand higher performance and greater density, the need for enhanced heat dissipation characteristics has increased. Currently, heat dissipation modules rely on soldered copper piping; however, the use of filler materials reduces both thermal efficiency and mechanical properties. This study investigates the process conditions for multi-core laser welding, aiming to reduce production costs and process times while maintaining energy efficiency. Through experimental analysis, the applicability of the process was evaluated by comparing the microstructure and mechanical properties of soldered joint pipes with those of laser-welded joint pipes used in actual electronic products. The heat dissipation pipes joined by laser welding exhibited approximately three times greater mechanical strength than their soldered counterparts, and it is anticipated that the shortened process will further reduce both costs and production time.

Keywords:

Laser welding, Multi core laser, Heat dissipation module, Microstructure analysis, Peel strength

Acknowledgments

본 연구는 2024년도 중소벤처기업부의 기술개발사업(00270517) 연구비 지원에 의한 연구결과로 수행되었습니다.

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Chanyang Lee

Graduate Student in Department of New Materials Engineering, Ajou University. Researcher, Advanced Institute of Technology.His research interest is Laser Welding and Materials Microstructure Analysis.

E-mail: cksdid9927@iae.re.kr

Minchul Oh

Senior Researcher, Advanced Institute of Technology.His research interest is Alloy Design and New Material Development.

E-mail: mc0715hj@iae.re.kr

Imhyon Ko

Director of Samwon Copper Tube Manufacturing. Graduate Student in Department of Mechanical Systems Engineering, Gyeongsang National University.His research interest is Manufacturing of Pipe.

E-mail: ihko@swcopper.co.kr

Byungmin Ahn

Professor in the Department of Materials Science and Engineering, Ajou University.His research focuses on the Metallic Materials and Composites Specifically including High Entropy Alloys, Nanostructured Alloys, Advanced Powder Metallurgy Processes, Experimental Mechanics, and Metal Additive Manufacturing.

E-mail: byungmin@ajou.ac.kr