When the blank plastically degrades in the mould cavity, it flows and slides along the surface of the mould cavity, resulting in severe friction between the surface of the mould cavity and the blank, causing the chair mould to fail due to wear. Therefore, the wear resistance of materials is one of the most basic and important properties of chair mould.
Hardness is the main factor affecting wear resistance. Under normal circumstances, the higher the hardness of the chair mould 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.
2. Toughness
Most of the working conditions of the chair mould are very harsh. Some often bear large impact loads, leading to brittle fracture. In order to prevent the chair mould parts... less
