Send Message
Up to 5 files, each 10M size is supported. OK
Shenzhen Perfect Precision Product Co., Ltd. 86-189-26459278
News Get a Quote
Home - News - What are the necessary characteristics of mold parts?

What are the necessary characteristics of mold parts?

February 27, 2024

1、Abrasion resistance


When the blank is plasticized in the mold cavity, it flows and slides along the surface of the cavity, causing violent friction between the surface of the cavity and the blank, which leads to the failure of the mold due to wear. Therefore, the wear resistance of the material is one of the most basic and important properties of the mold.

Hardness is the main factor affecting wear resistance. Generally speaking, the higher the hardness of the mold parts, the smaller the wear, and the better the wear resistance. In addition, wear resistance is also related to the type, number, form, size and distribution of carbide in the material.


2、Strong toughness


Most of the working conditions of the mold are very bad, and some of them are often subjected to large impact load, which leads to brittle fracture. To prevent the mold parts in the work of sudden brittle fracture, mold to have high strength and toughness. Mold toughness mainly depends on the material carbon content, grain size and tissue state.

latest company news about What are the necessary characteristics of mold parts?  0

3、Fatigue fracture performance


Mold work process, under the long-term role of cyclic stress, often lead to fatigue fracture. The form of small energy multiple impact fatigue fracture, tensile fatigue fracture contact fatigue fracture and bending fatigue fracture. The fatigue fracture performance of the mold mainly depends on its strength, toughness, hardness, and the content of inclusions in the material.


4、High temperature performance


When the working temperature of the mold is high, it will make the hardness and strength drop, resulting in early wear or plastic deformation and failure of the mold. Therefore, the mold material should have a high tempering stability to ensure that the mold in the working temperature, with high hardness and strength.

latest company news about What are the necessary characteristics of mold parts?  1

5、Hot and cold fatigue resistance


Some molds in the work process in the repeated heating and cooling state, so that the cavity surface by the role of tensile, pressure variable stress, causing surface cracking and spalling, increasing friction, hindering plastic deformation, reducing the dimensional accuracy, thus leading to mold failure. Hot and cold fatigue is one of the main forms of hot mold failure, help this kind of mold should have a high resistance to hot and cold fatigue performance.


6、Corrosion resistance

Some molds such as plastic mold at work, due to the presence of chlorine, fluorine and other elements in the plastic, decomposition after heat precipitation of HCI, HF and other strong aggressive gas, erosion mold cavity surface, increase its surface roughness, intensify the wear loss effect.