1. Wear resistance

When the blank is plastically denatured in the cavity of the Chair Mould(FURNITUREMOULD), it flows and slides along the surface of the cavity, causing severe friction between the surface of the cavity and the blank, which causes the chair mould to fail due to wear. Therefore, the wear resistance of the material is one of the most basic and important properties of the chair mould. Hardness is a major factor affecting wear resistance. In general, the higher the hardness of the chair mould parts, the smaller the wear amount and the better the wear resistance. In addition, the wear resistance is also related to the type, quantity, shape, size, and distribution of carbides in the material.

2. Toughness

The working conditions of the chair mould are mostly very harsh, and some often suffer from large impact loads, resulting in brittle fracture. In order to prevent the chair mould parts from suddenly breaking during work, the chair mould should have high strength and toughness. The toughness of the chair mould depends mainly on the carbon content, grain size, and texture of the material.

3. Fatigue fracture performance

During the working process of the chair mould, under the long-term effect of the cyclic stress, fatigue fracture is often caused. The form has small energy multiple impact fatigue fracture, tensile fatigue fracture contact fatigue fracture and bending fatigue fracture. The fatigue fracture properties of a chair mould depend primarily on its strength, toughness, hardness, and the amount of inclusions in the material.

4. High-temperature performance

When the working temperature of the chair mould is higher, the hardness and strength are lowered, resulting in early wear of the chair mould or plastic deformation and failure. Therefore, the chair mould material should have a high resistance to tempering to ensure that the chair mould has a higher hardness and strength at the working temperature.

5. Resistance to hot and cold fatigue

Some chair mould is repeatedly heated and cooled during the working process, causing the surface of the cavity to be subjected to tensile and pressure-induced stresses, causing surface cracking and spalling increasing friction, impeding plastic deformation, and reducing dimensional accuracy. It causes the chair mould to fail. Hot and cold fatigue is one of the main forms of hot work die failure. It should have high resistance to cold and heat fatigue.

6. Corrosion resistance

Some chair mould such as plastic moulds, when working in the plastic, due to the presence of chlorine, fluorine and other elements in the plastic, after the heat, the HCI, HF and other strong aggressive gases are resolved, eroding the surface of the chair mould cavity, increasing its surface roughness and aggravating wear Invalid.

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