(HIGH WEAR-RESISTANT COLD WORK TOOL STEELS WITH ENHANCED IMPACT TOUGHNESS

摘要

The present invention relates to a high wear-resistant cold work tool steel with enhanced impact resistance, which also has impact resistance in order to be applied to not only a knife mold to cut a steel such as a hot coiled and a cold rolled steel coil and/or a plate; a high-strength stainless steel sheet and an iron scrap, which are steel products, but also a mold liner; a short blast liner; a special mold material; and a rolling roll. The high wear-resistant cold work tool steel of the present invention comprises: 1.8-2.4 wt% of carbon (C); 11.0-14.0 wt% of chrome (Cr); 0.5-2.5 wt% of molybdenum (Mo); 2.0-6.0 wt% of vanadium (V); 0.1-0.7 wt% of silicon (Si); 0.1-0.5 wt% of manganese (Mn); 0.1-1.0 wt% of titanium (Ti); and the remaining of iron by weight ratio and having coarse primary particles and eutectic carbides which are not decomposed during dissolution, and cooling of an alloy remained with a tempered martensite group as a primary base.