Pressure casting can cast parts with complex shapes, high precision, small surface roughness and good mechanical properties. Therefore, the die casting mold should have the following performance requirements:
(1) Large high temperature strength and toughness
The die-casting mold is subjected to high temperature, high pressure and thermal stress when molten metal is injected, and is easily deformed or even cracked. Therefore, the mold material should have sufficient high temperature strength and toughness and high hardness at the working temperature. Toolox materials have the advantages of high strength, high toughness (up to 100J or more toughness) and high hardness. Toolox44 is the world's hardest pre-hardened tool steel (HRC45-48). The Royal Swedish Institute of Technology claims that Toolox is the perfect combination of high hardness and high toughness.