本文介绍了一种新型模具钢——坩埚Marlok钢。同以往任何模具钢相比,在相同使用条件下,该钢可以提高模具寿命和模具性能。 1.对铝压铸模具钢的要求压铸模在工作中承受着热冲击、机械应力及摩擦。在压铸生产过程中温度周期性变化,引起模腔表面膨胀与收缩,从而导致形成网状裂纹,即热裂纹。如果模具材料断裂韧性很低,而机械应力和热冲击又很高,整个型腔就可能崩裂。在H13钢较厚的折断截面上,可以 This article describes a new type of die steel - crucible Marlok steel. Compared with any previous mold steel, under the same conditions of use, the steel can improve mold life and mold performance. 1. Aluminum die-casting mold steel requirements Die casting work in the withstand thermal shock, mechanical stress and friction. In the die-casting production process temperature changes periodically, causing the cavity surface expansion and contraction, resulting in the formation of mesh-like cracks, that is, hot cracks. If the mold material fracture toughness is low, and mechanical stress and thermal shock and high, the entire cavity may crack. H13 steel in the thick section of the fracture, you can