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논문 기본 정보

자료유형
학술대회자료
저자정보
서오석 (강원대학교) 김헌영 (강원대학교) 박종규 (화신) 서창희 (기계부품연구원)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2011년도 춘계학술대회 논문집
발행연도
2011.5
수록면
378 - 382 (5page)

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초록· 키워드

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A hot stamping process can be divided into two types, direct process and indirect process, according to the sequence of heating, forming and quenching. In this study, the indirect hot stamping of boron steel tube was adopted to be numerically analyzed. The whole process including forming at room temperature, heating and cooling process with phase transformation was analyzed and simulated by the implicit code DEFORM. From the analyses, it was found that different heat transfer coefficients should be used at different zones of the model in order to ensure the accuracy of the heating and cooling analysis. Therefore, the heat transfer coefficients applied in the analysis were measured at various positions in the tube, e.g., outside, inside, bending area by using heat cartridges. Finally, these coefficients were determined through a correlation of values in the real tests and those from the numerically backward traced analysis. Comparison between experiments and analysis of the final deformed shape and the distribution of the temperature shows good agreement. Hot stamping process consists of forming at the elevated temperature and rapid quenching, which induces phase transformation and results in the press hardening of steel parts. In this study, the hot stamping process of boron steel tube was analyzed by applying different heat transfer coefficients which had been experimentally measured and numerically backward traced.

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Abstract
1. 서론
2. 수치 해석 모델링
3. 열전달 계수 측정 실험
4. 체적 변화 비교
5. 시제작 및 열변형 측정
6. 결론
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UCI(KEPA) : I410-ECN-0101-2013-550-000441407