HIGH CARBON FORGING WORK ROLL FOR HOT ROLLING HAVING AN EXCELLENT HIGH TEMPERATURE WEAR RESISTANCE AND MECHANICAL STRENGTH AND A MANUFACTURING METHOD THEREOF CAPABLE OF MANUFACTURING THE SAME THROUGH A STEP OF HOT FORGING AND A STEP OF A HEAT TREATMENT

摘要

PURPOSE: A high carbon forging work roll for hot rolling having an excellent wear resistance at high temperature and mechanical strength and a manufacturing method thereof are provided to implement a step of hot forging and a step of a heat treatment on the work roll at an optimal temperature range, thereby providing the high wear resistance at the high temperature to the work roll.;CONSTITUTION: A manufacturing method of a high carbon forging work roll for hot rolling having an excellent wear resistance at high temperature and mechanical strength includes: a step of manufacturing an ingot; a hot forging step of forming the work roll with heating and forging the ingot in a heating furnace; and a heat treatment step of heat-treating the work roll with passing the work roll through a step of normalizing, a step of forcible cooling, and a step of tempering. The hot forging step includes: an initial hot forging step of sequentially implementing an upsetting process and a cogging process at a temperature of 950 to 1200°C; and a final hot forging step of implementing a finishing process at a temperature of 700 to 950°C.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) End; (S100) Ingot manufacturing step; (S200) Work roll heating and forging step; (S300) Heat-treating step