A PROCESS FOR MANUFACTURING HEAT TREATED ALLOYED GRAY CAST IRON TOP PINCH ROLL SHELL FOR HOT STRIP ROLLING,THE METHOD OF PREPARING SUCH ALLOY AND THE ALLOY THEREOF

摘要

The process for manufacturing heat treated alloyed gray cast iron top pinch roll shell for hot strip rolling comprising the steps of top pinch roll shell moulding, proof machining and Grinding of the moulded shell, testing of the surface of the shell material using process of ultrasonic testing, final machining and grinding wherein the said process is characterized by heat treatment cycle of the gray cast alloy after the step of proof machining and proof grinding followed by a final testing of surface of the shell after the final grinding process.