PERFORMANCE ANALYSIS OF HOT ROLLING MILL TO IMPROVE THE PRODUCTIVITY AND REDUCE THE PRODUCTION COST AND SCRAP VALUE

PERFORMANCE ANALYSIS OF HOT ROLLING MILL TO IMPROVE THE PRODUCTIVITY AND REDUCE THE PRODUCTION COST AND SCRAP VALUE

MANOJ MAJHI

SWAMI VIVEKANANDA UNIVERSITY, TELINIPARA BARASAT- BARRACKPORE RD,  BARA KANTHALIA, WEST BENGAL-700121  DEPT. OF MECHANICAL ENGINEERING SPECIALIZATION ON MANUFACTURING TECHNOLOGY

ABSTRACT: Rolling is the one of the most important industrial metal forming process where plastic deformation of a work pieces is achieved by compressing it under application of force between two rotating rolls. In this paper aims improved productivity of the production and reduce scrap value. In India presently scrap value price is very high 100% old condition mild steel scrap price INR-70.00 and 100% mild steel melting scrap price INR-56.00 generally the large amount of scrap which affect the cost of production. Most of the rolling mill work on the principal of experience and mutual settlement there are no fixed live and calculated arrangement of process. Rolling mill are one of the most productive and sensitive area of industries where slow process or any breakdown in production line is not acceptable. In hot rolling mill the large amount of scrap generated by select Incorrect billet size, low temperature of reheating, wrong parameters setting in PLC, non-value added activity, excess billets gape, cobble rate. In this condition properly maintain all the correct parameters before production the scrap value automatically decrease this is the only way through improve the productivity of production and reduce cost and scrap value.

KEYWORDS: Rolling Performance Analysis, PLC setting  Right size of billets selection, Cobble rate, Mill Utilization, Improve productivity