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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2013.5
- 수록면
- 121 - 124 (4page)
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초록· 키워드
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Reducing friction between tool and workpiece is very important to enhance the forming limit on both sheet and bulk forming. Various kinds of lubricant and coating are used to reduce the friction coefficient on metal forming. Friction has to be reduced because sheet forming of Mg alloy sheet is usually performed on warm temperature. Various lubricants are almost used on metal forming process. However, it is difficult to use the lubricant on multi-stage sheet forming process, especially, on warm temperature. Therefore, tool coating is better than lubricant on Mg ally sheet warm forming.
The importance of friction effect has been studied through real formed part of AZ31 sheet according to the different lubricant. Two different non-metallic coating layers are compared with no-coating tool by pin-on-disc friction testing. Friction coefficients for different coating layers are measured. The materials of pin and disc are SKD61 and AZ31, respectively. The coefficients are measured at room temperature, 170 and 250℃. Until now, tool coating for Mg warm forming is not effective and coulomb friction coefficient is 0.4 in ambient.
The importance of friction effect has been studied through real formed part of AZ31 sheet according to the different lubricant. Two different non-metallic coating layers are compared with no-coating tool by pin-on-disc friction testing. Friction coefficients for different coating layers are measured. The materials of pin and disc are SKD61 and AZ31, respectively. The coefficients are measured at room temperature, 170 and 250℃. Until now, tool coating for Mg warm forming is not effective and coulomb friction coefficient is 0.4 in ambient.
목차
Abstract
1. 서론
2. Mg합금 온간 판재성형과 윤활
3. 금형코팅에 의한 마찰계수 저감
4. 시험결과 및 고찰
6. 결론
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