م مقاله کنفرانسی سال ۱۳۸۴ ۲,۲۹۱ مشاهده Effect of repair-welding parameters on life time of die casting moulds In die casting, H13 hot working tool steels are exposed to heat shocking and cracking due to the thermal… Repair-weldingDie Casting MouldsThermal Fatigue