Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1995.07b
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- Pages.892-894
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- 1995
Application of Coating Thickness Control System
도금 두께 제어시스템의 개발 적용
- Choi, Il-Seop (Technical Research Laboratories, POSCO) ;
- Yoo, Seung-Ryul (Technical Research Laboratories, POSCO) ;
- Park, Han-Ku (Instrumentation and Control Department, POSCP) ;
- Kwak, Young-Woo (Instrumentation and Control Department, POSCP) ;
- Kim, Sang-Jun (Steel Products Research Devision, RIST)
- 최일섭 (포항제철 기술연구소) ;
- 유승렬 (포항제철 기술연구소) ;
- 박한구 (포항제철 계측제어부) ;
- 곽영우 (포항제철 계측제어부) ;
- 김상준 (산업과학기술연구소 철강제품연구부문)
- Published : 1995.07.20
Abstract
This paper deals with developmeant and application of coating thickness control system in hot dip galvanizing process. According to the line conditions, such as line speed, strip size and target coating weight, a predictive preset model sets the initial oprating conditions. Referring the zine coating informations from the gauge, mean coating value controller adjusts the chamber pressure and horizontal distance between strip and air knife, while coating deviation controller adjusts the lip gap profile of the air knife. All adaptive gains are interactively calculated by numeric models based on the theoretical analysis. The operating result with this system effectively reduces the coating deviation in transverse direction as well as in longitudinal direction.
Keywords