한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)
- 제13권5호
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- Pages.67-73
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- 1996
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
접촉식 자동 형상제어 장치의 특성에 관한 연구
A Study on Characteristics of Automatic Flatness Control System of Contact Type
- 김문경 (부산대학교 기계설계공학과 대학원) ;
- 전언찬 (동아대학교 기계공학과) ;
- 김순경 (동의공업전문대학 자동차과)
- Kim, Moon-kyung ;
- Jeon, Eon-chan ;
- Kim, Soon-kyung
- 발행 : 1996.05.01
초록
The necessity for more accurate automatic flatness control(AFC) system has increased of customers' requirement for cold rolled steel sheet. Therefore, many cold rolling mills replaced its AFC system with a measuring roll of the contact type form the non-contact type. In this paper. The performance of AFC system of contact type has been investigated under industrial conditions. It has two kinds of actuator: roll bender, spot cooling system. The test results are as follows: The more strip thickness is thick, the smaller the I value, and the more it is thin, the bigger the I value. And a complex distribution of strip tension was controlled, for example, not only a pocket wave but also a simple center wave and edge wave. Because the tension deviation is larger at acceler- ation speed and decelerationspeed than steady speed, AFC system of contact type is better to adopt over 50m/mim. AFC system reduces rapidly large flatness deviation. The maximum I value of strip has been decreased to 13 I, and sticker, defects caused by poor flatness, have been decreased about 60%.
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