HEAT TREATING METHOD OF MOLD WHICH MAXIMIZES SERVICE LIFE OF A LARGE MOLD AND AFFECTS MANUFACTURING COST DOWN AND QUALITY IMPROVEMENT

摘要

PURPOSE: A heat treating method of mold is provided to maximize a life span of a mold by organizing uniform martensite.;CONSTITUTION: A heat treating method of mold comprises follows. A mold of a dice steel material is heated and to become austenite. O-base area(3) is cooled in a first cooling speed in order to prevent perlitic transformation. The mold is cooled in a second cooling speed in order to prevent bainit transformation in 60°C~200°C. The mold is charged and tempered for 500~600°C.;COPYRIGHT KIPO 2012