Six piece die

Material selection of mold manufacturers is a very important link in the whole mold manufacturing process.

The mold material selection shall meet three principles. The mold shall meet the requirements of wear resistance, strength and toughness, the mold shall meet the process requirements, and the mold shall meet the economic applicability.

Conditional requirements

1. Abrasion resistance

When the blank becomes plastic in the mold cavity, it flows and slides along the cavity surface, causing severe friction between the cavity surface and the blank, which leads to the failure of the mold due to wear. Therefore, the wear resistance of materials is one of the basic and important properties of moulds.

Hardness is the main factor affecting wear resistance. In general, the higher the hardness of die parts, the smaller the wear amount, and the better the wear resistance. In addition, wear resistance is also related to the type, quantity, shape, size and distribution of carbides in materials.

2. Strength and toughness

Most of the working conditions of the dies are very bad, and some of them often bear large impact loads, leading to brittle fracture. In order to prevent sudden brittle fracture of die parts during operation, the die shall have high strength and toughness.

The toughness of the die mainly depends on the carbon content, grain size and microstructure of the material.