Mechanical properties of plastic mold steel
hardness
Hardness is one of the most basic mechanical properties of plastic mold steel. It directly determines whether the plastic mold steel can withstand the required cutting and stamping loads. In general, high-hardness plastic mold steels have stronger wear resistance and longer service life. However, too hard plastic mold steel will also lead to problems such as difficult processing, poor cutting performance, and poor heat treatment effect. Therefore, when selecting plastic mold steel, the hardness value needs to be determined according to the actual process requirements and material properties.
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strength
Strength is one of the mechanical properties of plastic mold steel, such as tensile strength, compression resistance, and bending resistance. High-strength plastic mold steels are able to withstand increased machining and shock loads, while also providing better tensile breaking and durability. However, the higher the strength of the plastic mold steel, the lower the toughness of it, which is prone to problems such as cracking and breakage. Therefore, when choosing plastic mold steel, it is necessary to balance its strength and toughness properties, and choose according to the specific process requirements.
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plasticity
Plasticity is one of the important mechanical properties of plastic mold steel, which determines the machinability and deformation ability of plastic mold steel. Plastic mold steels with high plasticity have better machinability and are easier to perform process operations such as cutting, forging and forming. However, excessive plasticity will also cause plastic mold steel to be prone to plastic deformation, which will affect its stability and service life. Therefore, when selecting plastic mold steel, it is necessary to balance its performance indicators such as plasticity and hardness according to the specific process requirements and material characteristics.
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Abrasion resistance
Wear resistance is one of the important mechanical properties of plastic mold steel, which directly affects the service life and production efficiency of plastic mold steel. Plastic mold steels with high wear resistance are able to better resist wear and fatigue, maintain their accuracy and surface quality, and thus improve the production efficiency and quality level of plastic products. However, abrasion resistance comes at a high cost, so it is necessary to select the appropriate abrasion resistant material according to the specific needs.
toughness
Toughness is one of the mechanical properties of plastic mold steel, which determines the impact resistance and fatigue resistance of plastic mold steel. Plastic mold steels with high toughness are better able to withstand shock and vibration loads, and have better fatigue resistance and long-term stability. However, toughness has a certain contradiction with performance indicators such as hardness and strength, which need to be balanced and adjusted in use.