factors affecting the hardness of plastic mold accessories

The main factors affecting the hardness of plastic mold accessories

Date: October 16, 2024

With the development of Industry 4.0, the application of molds is indispensable in industrial production and people’s lives, and mold components, as an important component of molds, are closely related to molds. Mold accessories are widely used in various manufacturing fields such as plastic molds, stamping molds, automotive, electrical, and aviation. The quality characteristics of mold parts are determined by the quality and service life of the mold. The wear resistance of mold parts is absolutely affected by their hardness. Generally, the higher the hardness of mold parts, the smaller the wear amount, and the better the wear resistance. In addition, wear resistance is also related to the type, quantity, morphology, size, and distribution of carbides in the material.

1. Strong resilience

The working conditions of molds are mostly very harsh, and some often bear large impact loads, leading to brittle fracture. To prevent sudden brittle fracture of mold parts during operation, the mold should have high strength and toughness. The toughness of molds mainly depends on the carbon content, grain size, and microstructure of the material.

2. Wear resistance; Mold accessories

When the billet undergoes plastic deformation in the mold cavity, it flows and slides along the surface of the cavity, causing severe friction between the cavity surface and the billet, resulting in the failure of the mold due to wear. So the wear resistance of materials is one of the most basic and important properties of molds.

3. Fatigue fracture performance

Mold accessories often experience fatigue fracture under long-term cyclic stress during operation. Its forms include low-energy multiple impact fatigue fracture, tensile fatigue fracture, contact fatigue fracture, and bending fatigue fracture.

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