Where is the mold steel mainly used, and what are the materials of the mold steel?

There are many methods of mold classification, which are often used in the past: classification according to the structural form of the mold, such as single-process mold, duplex die, etc.; Classified according to the use object, such as automobile panel mold, motor mold, etc.; Classified according to the nature of processed materials, such as molds for metal products, molds for non-metallic products, etc.; Classified according to mold manufacturing materials, such as cemented carbide molds, etc.; Classified according to the nature of the process, such as drawing die, powder metallurgy die, forging die, etc. Some of these classification methods cannot fully reflect the structure of various molds and the characteristics of the forming process, as well as their use functions.

To this end, a comprehensive classification method based on the process properties and objects of forming processing using dies is adopted, and the dies are divided into: stamping dies (stamping dies), plastic molding molds, die-casting molds, forging molds, metal molds for casting, powders, etc

Mold steel is a steel grade used to make molds such as cold stamping dies, hot forging dies, die casting molds, etc.

1) Cold work die steel is mainly used to manufacture molds for pressing and forming workpieces in a cold state. There is a wide range of cold work die steelsFrom all kinds of carbon tool steels, alloy tool steels, high-speed tool steels to powder high-speed tool steels and powder high-alloy die steels.

Such as: cold stamping die, cold stamping die, cold drawing die, embossing die, cold extrusion die, thread pressing die and powder pressing die, etc. Cold work die steel is a vacuum degassed refined steel, pure inner quality, good machinability, obvious cutting improvement, good hardenability, air cooling hardening is not easy to quench, excellent wear resistance, good toughness, can be used as stainless steel and high hardness materials of punching die.

2) Hot work die steel is mainly used to manufacture molds for pressure processing of workpieces at high temperatures.

Such as: hot forging molds, hot extrusion molds, die-casting molds, hot forging molds, etc.

Commonly used hot work die steels are: alloy die steels with medium and high carbon content adding Cr, W, Mo, V and other alloying elements; For special requirements of hot work die steel, sometimes made of high-alloy austenitic heat-resistant die steel.

As the name suggests, it is mainly used in the forming part of the mold, such as the yin and yang molds of the mold.

Mold steel must be used in the mold, but the performance of various steels is not the same, and the use of the mold is not the same, some are used as mold bases, mold bases, some are used as inner materials, etc. Of course, the choice of steel is sometimes based on the characteristics of the mold product.

Stamping dies, electronic products, auto parts, hardware, precision machinery and so on.

Die steel is a steel grade used to make cold stamping dies, hot forging dies, die casting dies and other molds. Molds are the main processing tools for manufacturing parts in industrial sectors such as machinery manufacturing, radio instruments, motors, and electrical appliances. The quality of the mold directly affects the quality of the pressure processing technology, the accuracy of the product, the output and the production cost, and the quality and service life of the mold are mainly affected by the mold material and heat treatment in addition to the reasonable structural design and processing accuracy.

Die steel can be roughly divided into three categories: cold work die steel, hot work die steel and plastic die steel, which are used for forging, stamping, cutting, die casting, etc. Due to the different uses of various molds and complex working conditions, the steel used for molds, according to the working conditions of the molds it manufactures, should have high hardness, strength, wear resistance, sufficient toughness, as well as high hardenability, hardenability and other process properties.

Due to the different uses and complex working conditions, the performance requirements for mold steels are also different.

It is used in the manufacture of molds or mechanical equipment accessories.

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Mould steel material:

1. Cold work die steel: mainly used to manufacture molds that are pressed and formed under cold state (room temperature) conditions. Such as cold stamping die, cold drawing die, cold pier die, cold extrusion die, embossing die, rolling die, etc.

2. Hot work die steel: mainly used to manufacture molds for hot forming of metals in high temperature state. Such as hot forging molds, hot extrusion molds, die-casting molds, hot shear molds, etc.

3. Plastic mold steel: also known as plastic mold steel, mainly used for plastic forming molds. Plastic molds are in the first place in mold making.

There are many classifications of plastic mold steel, mainly including: pre-hardened plastic mold steel, age-hardening mold steel, corrosion-resistant mold steel, free-cutting mold steel, martensitic aging plastic mold steel, and mirror-polished plastic mold steel.

Quality improvement. 1. Use the metamorphic effect of trace elements such as CA and rare earth on the inclusions to change the structural morphology and physical properties of the inclusions in the steel, so that the inclusions in the steel are spheroidized and refined, so as to improve the mechanical properties of the steel.

2. High-temperature diffusion heat treatment of the steel ingot can improve the non-uniformity of the composition of the steel ingot, thereby improving the transverse properties of the steel.

3. In terms of thermal processing, repeated upsetting and multi-directional rolling of steel ingots can increase the amount of deformation, which can reduce the level of carbide segregation in steel, and is also conducive to improving the anisotropy of steel.