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논문 기본 정보

자료유형
학술저널
저자정보
김민석 (한국생산기술연구원) 박민우 (웰메이트) 이정현 (한국생산기술연구원) 심지연 (한국생산기술연구원)
저널정보
대한용접·접합학회 대한용접·접합학회지 大韓熔接·接合學會誌 第43卷 第1號
발행연도
2025.2
수록면
39 - 48 (10page)

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초록· 키워드

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In recent years, the automotive industry has focused on developing dissimilar material joining technologies to achieve both lightweight structures and high strength. Particularly, 1.5 GPa grade hot-stamped steel (22MnB5) and aluminum alloys have gained attention due to their excellent mechanical properties, necessitating the selection of suitable processes for their application in automotive component manufacturing. A representative fastening process is Self-Piercing Riveting (SPR), which applies high fastening force to a rivet, enabling it to pierce the upper material and plastically deform the lower material. This process provides high-quality joints, improved fatigue behavior, and is recognized as an environmentally friendly process. Lately, for ultra-high strength materials, Electromagnetic Self-Piercing Riveting (E-SPR) has been studied. E-SPR operates on principles similar to SPR but uses electromagnetic forces to drive the punch at significantly higher velocity, allowing for faster and more efficient joining. This process can concentrate fastening forces, resulting in improved joint quality for high-strength materials. This study aimed to achieve high-quality E-SPR joints between 1.5 GPa grade hot-stamped steel and aluminum alloys without any assistant process. In order to carry this out, the effects of rivet and die geometries on joint quality were analyzed, and suitable configurations were selected. For the selected rivet and die, the study examined the effect of charging energy on joint quality in terms of cross-sectional dimensions and tensile shear load. Based on these results, HD3-type rivet, FM-type (flat) die, and 8.5 kJ charge energy were selected as the optimal process values for 1.5 GPa grade hot-stamped steel and 5052-H32 aluminum alloy.

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Abstract
1. 서론
2. E-SPR 구동 원리
3. 실험방법
4. 결과 및 고찰
5. 결론
Reference

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