지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The work roll surface temperature rises and falls repetitively during hot slab rolling because the work roll surface is cooled continuously by water. This study focused on Std. No. 7 to determine a cooling method which significantly reduces the tangential tensile stresses on the work roll surface of the hot slab mill at Hyundai Steel Co. in Korea. A series of finite element analyses were performed to compute the temperature distribution and the tensile stresses in the circumferential direction of the work roll. The virtual slab model was used to reduce the run time considerably by assigning a high temperature to the virtual slab. Except for the heat generated by plastic deformation, this is equivalent to the hot rolling condition that a high temperature slab (material) would experience when in contact with the work rolls. Results showed that when the virtual slab model was coupled with FE analysis, the run time was found to be reduced from 2000 hours to 70 hours. When the work roll surface cooled with a certain on-off patter of water spray, the magnitude of the tangential stresses on the work rolls were decreased by 54.1%, in comparison with those cooled by continuous water spraying. Savings of up to 83.3% in water usage are possible if the proposed water cooling method is adopted.
목차
Abstract
1. 서론
2. 압연, 냉각조건
3. 워크롤표면 원주방향 인장, 압축응력 발생 메커니즘
4. 제안된 냉각방법
5. 유한요소해석
6. 결과 및 토의
7. 결론
참고문헌
참고문헌 (12)
참고문헌 신청
1. [학술지(정기간행물)] - C. G. Sun / 1998 / Investigation of Thermomechanical Behavior of a Work Roll and of Roll Life in Hot Strip Rolling / Metall. Mater. Trans. A 29 (9) : 2407 ~ 2424
2. [단행본] - L. F. Coffin / 1959 / Symp. on Internal Stresses and Fatigue in Metals / Elsevier, Amsterdam : 363 ~
3. [학술지(정기간행물)] - A. Saboonchi / 2004 / Changing the Geometry of Water Spray on Milling Work Roll and its Effect on Work Roll Temperature / J. Mater. Process. Technol 148 (1) : 35 ~ 49
4. [학술대회논문] - D. Benasciutti / 2010 / Finite Elements Prediction of Thermal Stresses in Work Roll of Hot Rolling Mills / Procedia Eng 2 (1) : 707 ~ 716
5. [학술지(정기간행물)] - S. Serajzadeh / 2002 / Unsteady State Work-roll Temperature Distribution during Continuous Hot Slab Rolling / Int. J. Mech. Sci 44 (12) : 2447 ~ 2462
2. [단행본] - L. F. Coffin / 1959 / Symp. on Internal Stresses and Fatigue in Metals / Elsevier, Amsterdam : 363 ~
3. [학술지(정기간행물)] - A. Saboonchi / 2004 / Changing the Geometry of Water Spray on Milling Work Roll and its Effect on Work Roll Temperature / J. Mater. Process. Technol 148 (1) : 35 ~ 49
4. [학술대회논문] - D. Benasciutti / 2010 / Finite Elements Prediction of Thermal Stresses in Work Roll of Hot Rolling Mills / Procedia Eng 2 (1) : 707 ~ 716
5. [학술지(정기간행물)] - S. Serajzadeh / 2002 / Unsteady State Work-roll Temperature Distribution during Continuous Hot Slab Rolling / Int. J. Mech. Sci 44 (12) : 2447 ~ 2462
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UCI(KEPA) : I410-ECN-0101-2014-551-000232096