- Jan 24, 2018 -
Block machine everybody already very familiar, but when selecting material many people, easy go into mistake.
The selection of the mould of the block machine can be said to be the important link in the process of die making, so it is not to be ignored, and the requirements of various aspects should be met when selecting materials.
Wear resistance, strong toughness is the necessary work demand, its economic utility model is also one of the key.
1. Wear resistance.
When the blank is plastic in the mold cavity, it flows and slides along the surface of the cavity, causing severe friction between the surface of the cavity and the blank, thus causing the die to wear out.
So the abrasion resistance of the material is one of the basic properties of the mould.
Hardness is the main factor affecting wear resistance.
Generally, the higher the hardness of the mold parts, the smaller the wear, and the better wear resistance.
In addition, wear resistance is also related to the type, quantity, shape, size and distribution of carbide in the material.
2. Strong toughness
The working conditions of the mould are mostly very bad, some of which are often subjected to a large impact load, which leads to brittle fracture.
In order to prevent the mold parts from breaking suddenly at work, the mold should have high strength and toughness.
The toughness of the mould depends mainly on the carbon content, grain size and organizational state of the material.
3. Fatigue fracture performance.
During the working process of the mould, fatigue fracture is often caused by cyclic stress.
Its form has small energy multiple impact fatigue fracture, tensile fatigue fracture contact fatigue fracture and bending fatigue fracture.
The fatigue fracture performance of the die depends on its strength, toughness, hardness and inclusions in the material.
4. High temperature performance
When the working temperature of the mold is high, the hardness and strength will be reduced, which will cause the die to wear out or to produce plastic deformation.
Therefore, the mould material should have high tempering stability to ensure that the mould has higher hardness and strength at working temperature.
Believe that, through the detailed introduction to block machine and have deeper understanding, in the later process, select material to the above these points as the basic requirements, as the basic principles for selecting material, will certainly choose the satisfied product.
If there is anything you don't understand or want to know, please call our company and we will patiently give you reasonable Suggestions that meet your requirements.