What material is the injection mold made of?

What material is the injection mold made of?

The material the injection mold is made of is crucial to ensure the durability, accuracy and quality of the final product. The following is a detailed analysis of the injection mold manufacturing material:

1. Main material: Steel

Steel is the most commonly used material in injection mold manufacturing. It is widely used for its excellent mechanical properties, wear resistance, thermal stability and machinability. There are many kinds of die steel, common ones are:

(1) Carbon structural steel: such as S45C, suitable for simple molds or low-yield molds.

(2) Alloy tool steel: such as P20, 718, etc., they undergo special heat treatment and alloying, with higher strength and wear resistance, suitable for medium complexity and yield of the mold.

(3) Stainless steel: such as S136, with excellent corrosion resistance, especially suitable for the production of chemical products or food packaging need high corrosion resistance mold.

(4) High-speed steel: used to manufacture mold parts that require extremely high hardness and wear resistance, such as cutting edges.

2, auxiliary material: aluminum alloy and copper alloy

(1) Aluminum alloy: Although the strength and wear resistance of aluminum alloy is not as good as that of steel, its light weight, good thermal conductivity and low cost make it an ideal choice for some low-yield or prototype molds. Aluminum alloy molds are usually used for rapid prototyping or small batch production.

(2) Copper alloy: Copper alloys, especially beryllium copper, because of its excellent thermal conductivity, high hardness and wear resistance, are used in some high-precision molds to manufacture inserts or cooling channels.

3, special material

With the progress of material science, some new special materials have also begun to be used in injection mold manufacturing, such as:

(1) Powder metallurgy steel: has a uniform microstructure and excellent mechanical properties.

(2) High-performance ceramics: used to manufacture certain parts of the mold to improve wear resistance and thermal stability.

In summary, the manufacturing material of injection mold is mainly steel, supplemented by aluminum alloy and copper alloy. The choice of material depends on the complexity of the mold, production needs, cost budget and the quality requirements of the final product. The correct material selection can ensure the long-term use effect and production efficiency of the mold.