Six-piece die

Material selection of die manufacturer is a very important link in the whole process of die making.

Die material selection needs to meet three principles. Die meets the working requirements of wear resistance, strength and toughness. Die meets the technological requirements. At the same time, die should meet the economic applicability.

Conditional requirements

1. Wear resistance

When the billet is plastic denatured in the die cavity, it flows and slides along the surface of the die cavity, resulting in severe friction between the surface of the die cavity and the billet, which leads to the failure of the die due to wear. So the wear resistance of materials is one of the basic and important properties of dies.

Hardness is the main factor affecting wear resistance. Generally speaking, the harder the die parts are, the smaller the wear amount is and the better the wear resistance is. In addition, the wear resistance is also related to the type, quantity, morphology, size and distribution of carbides in the material.

2. Strength and toughness

Most of the working conditions of the dies are very bad, and some of them often bear large impact load, which leads to brittle fracture. In order to prevent the sudden brittle fracture of die parts, the die should have high strength and toughness.

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