산업용 Roll Heat-Up 표면연소버너 시스템 개발

Metal fiber burner system for industrial roll heat-up is developed by POSCO in Pohang Works. Rolls had been heated up for 3~4 hours by hot materials whose temperature was about 700℃. The methodology of roll heat-up using hot materials caused several problems; 1. hot materials loss, 2. clogging of dust collector 3. roll0’s thermal stress. The alternative is an application of metal fiber burner system to solve these problems. Initial test that was as similar as operating circumstances of actual industrial roll was carried out to verify the application of metal fiber burner system. According to analysis of heat transfer based on the test, roll heating time and distance between metal fiber burner and roll are determined as 90 minutes and 80㎜ respectively. Four real tests in operating roll with metal fiber burner have been succeeded. POSCO establishes the operating technology for industrial roll heat-up.