Development of Measurement and Diagnosis System for Roll Gap in Continuous Casting Process of Iron and Steel Industry

Abstract

A new roll gap checker, which makes it possible to judge condition of roll gaps at second cooling water zone in a continuous casting machine of the iron and steel industry, is developed. This diagnosis system has the advantage of high accurate measurement, durability in difficult surroundings, ease of operation and lack of influence of casting time during measurement. Developed roll gap checkers are applied to continuous casting machines for slab products. Confirmation of measurement repeatability, durability of on-line use over a long period and comparison between actual condition of roll gaps and judgement by using this method are carried out. Good repeatability of measured data, good durability of on-line use over a long period and good correspondences with actual condition of roll gaps are verified. Developed roll gap checkers will be utilized in continuous casting machines of the iron and steel industry, and are expected to contribute to their stable operation and casting of good quality products.