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자료유형
학술저널
저자정보
최민철 (동아대학교)
저널정보
한국경영과학회 경영과학 經營科學 第29卷 第2號
발행연도
2012.7
수록면
143 - 155 (13page)

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The purpose of this study is to formulate and solve the scheduling problem to heat-treatment process in forging process and apply it to industries. Heat-treatment is a common process in manufacturing heavy forged products in ship engines and wind power generators. Total complete time of the schedule depends on how to group parts and assign them into heat furnace. Efficient operation of heat-treatment process increases the productivity of whole production system while scheduling the parts into heat-treatment furnace is a combinatorial problem which is known as an NP-hard problem. So the scheduling, on manufacturing site, relies on engineers’ experience.
To improve heat-treatment process schedule, this study formulated it into an MIP mathematical model which minimizes total complete time. Three methods were applied to example problems and the results were compared to each other. In case of small problems, optimal solutions were easily found. In case of big problems, feasible solutions were found and that feasible solutions were very close to lower bound of the solutions. ILOG OPL Studio 5.5 was used in this study.

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Abstract
1. 서론
2. 열처리 공정의 일정계획 수립 모형
3. 열처리 공정 실제 문제에의 적용과 효과
4. 결론
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