What are the materials of high thermal conductivity mold steel and hot forging mold steel

As an important material in industrial manufacturing,the type and performance of mold steel directly affect the service life and production efficiency of molds.This article will provide a detailed introduction to the specific materials of high thermal conductivity mold steel and hot forging mold steel,helping readers better understand the characteristics and applications of these two types of mold steel.

Material of high thermal conductivity mold steel

High thermal conductivity mold steel is a mold steel material with good thermal conductivity,which can quickly conduct heat,effectively improve the heating speed of the mold,and thus enhance production efficiency.Here are several common high thermal conductivity mold steel materials:

T320 high thermal conductivity mold steel

T320 mold steel is known for its high thermal conductivity,with a thermal conductivity coefficient much higher than other conventional mold steel materials.This material can quickly transfer heat to the entire mold,causing the mold surface to quickly heat up and improve production efficiency.At the same time,high thermal conductivity can also reduce the temperature gradient of the mold,reduce thermal stress,and extend the life of the mold.

T320 mold steel are not only with high thermal conductivity,but also with excellent hardness and wear resistance.By optimizing the composition ratio and heat treatment process,the hardness of T320 mold steel is maximized,which can effectively resist the extrusion and impact forces during the use of the mold,and improve the service life of the mold.The improvement of wear resistance enables the mold material to withstand long-term friction and wear and tear,reducing the degree of mold wear and extending its service life.

In the mold manufacturing industry,T320 mold steel is widely used in injection molds,die-casting molds,and hot pressing molds.Its high thermal conductivity can quickly cool the mold and improve production efficiency;High hardness and wear resistance can resist wear and tear of the mold under high temperature and pressure,ensuring the stability and service life of the mold.

Other high thermal conductivity mold steel materials

In addition to T320 mold steel,there are other high thermal conductivity mold steel materials such as HD mold steel.HD mold steel is widely used in industrial production molds and cutting tools due to its high-quality hot workability and excellent wear resistance.The characteristics of HD mold steel are high temperature resistance,wear resistance,impact resistance,fatigue resistance,etc.,which can meet various complex processing requirements.

These high thermal conductivity mold steel materials improve their thermal conductivity by adding specific thermal conductive elements,giving them excellent thermal conductivity properties.The implementation of high thermal conductivity not only improves the heating speed and production efficiency of the mold,but also reduces the thermal stress and temperature gradient of the mold,extending its service life.

Material of hot forging die steel

Hot forging die steel is a die material used in hot forging processes,which requires a certain degree of hardness,impact toughness,and heat resistance.The following are several common hot forging die steel materials:

H13 steel

H13 steel is currently the most commonly used medium grade hot work die steel in China,with excellent heat resistance and corrosion resistance,and can maintain high hardness and stability at high temperatures.H13 steel is an improved version of H11 steel,with high toughness and high-temperature softening resistance,suitable for manufacturing large molds and molds under high load working conditions.

The excellent performance of H13 steel makes it widely used in the processing of various metal materials,such as copper alloys,titanium alloys,etc.In hot forging molds,H13 steel can effectively resist wear and deformation at high temperatures,extending the service life of the mold.

3cr2w8v Steel

3Cr2W8V steel is one of the commonly used steels for hot forging dies,with high thermal strength,wear resistance,and thermal stability.However,with the advancement of materials science,many new hot forging die steels have better performance than 3Cr2W8V steel.For example,new hot forging die steels such as 225Cr4W5Mo2V and 5Cr4W5Mo2V(RM steel)have higher thermal strength,wear resistance,and thermal stability,making them suitable for hot forging dies under higher temperature and high load conditions.

Y4 steel and 8566 steel

Y4 steel and 8566 steel are two types of hot forging die steels with excellent high temperature resistance,with a hardness of HRC58-60 and high hardness and wear resistance.The high-temperature softening resistance of these two types of steel is 2-3 times that of H13 steel.The mold is not easily softened and can maintain high hardness and toughness.Therefore,Y4 steel and 8566 steel have a longer service life and higher cost-effectiveness in hot forging molds.

LG Mold Steel

LG mold steel is a hot forging mold steel with excellent toughness and a hardness of HRC54-56.LG mold steel not only has high toughness,but also has good heat resistance and wear resistance,making it suitable for manufacturing complex shaped hot forging molds.

Other hot forging die steel materials

In addition to the aforementioned hot forging die steel materials,there are also other common hot forging die steels such as 5CrMnMo,5CrNiMo,4CrMnSiMoV,etc.These steels belong to the category of hot forging die steels,and the alloying principle is similar to that of quenched and tempered alloy structural steels.The forging die requires a certain degree of hardness and high impact toughness,so the carbon content should not be too high,generally 0.45%-0.6%.

In addition,there are some new types of hot work mold steel materials,such as 4Cr5Mo2SiMnV1(code Y1)and 4Cr3Mo3W4VTiNb(code GR)steel,which have a service life 2-6 times longer than 3Cr2W8V steel and are suitable for manufacturing molds with high temperatures,long contact time with workpieces,and easy to cause thermal deformation collapse or thermal wear failure.

Heat treatment of mold steel

The heat treatment of mold steel is an important step in improving its performance,including overall heat treatment and surface heat treatment.

Overall heat treatment

The overall heat treatment includes annealing,normalizing,quenching,and tempering.Annealing and normalizing are mainly used to eliminate stress in mold steel,improve microstructure,and enhance toughness.Quenching achieves high hardness and wear resistance in mold steel through rapid cooling.Tempering is used to eliminate quenching stress,stabilize the structure and properties.

Surface Heat Treatment

Surface heat treatment includes surface quenching,physical vapor deposition,and chemical vapor deposition.Surface quenching achieves high hardness and wear resistance on the surface of mold steel through rapid heating and cooling.Physical vapor deposition and chemical vapor deposition are used to form a wear-resistant and corrosion-resistant coating on the surface of mold steel,improving the service life of the mold.

Principles for selecting mold steel

When selecting mold steel,it is necessary to comprehensively consider factors such as the working conditions,service life,and economic benefits of the mold.Here are some principles for selecting mold steel:

Choose based on working conditions

Different working conditions of molds have different performance requirements for mold steel.For example,hot forging molds require mold steel to have high heat resistance,hardness,and wear resistance;Cold forging molds require mold steel to have high toughness and impact resistance.Therefore,when selecting mold steel,it is necessary to choose according to specific working conditions.

Choose based on service life

The service life of molds is an important consideration when choosing mold steel.Some new types of hot forging die steels,such as Y4 steel and 8566 steel,have high resistance to high-temperature softening and wear resistance,which can significantly improve the service life of the die.Therefore,in situations where long-life molds are needed,these high-performance mold steels should be selected.

Choose based on economic benefits

There is a certain balance between the price and performance of mold steel.When choosing mold steel,it is necessary to comprehensively consider factors such as material price,processing cost,and mold service life,and choose mold steel with high cost-effectiveness.

Conclusion

High thermal conductivity mold steel and hot forging mold steel play an important role in industrial manufacturing.By selecting appropriate mold steel materials and conducting reasonable heat treatment,the service life and production efficiency of molds can be significantly improved.This article introduces several common high thermal conductivity mold steel and hot forging mold steel materials,as well as the heat treatment and selection principles of mold steel,hoping to help readers better understand and apply these mold steel materials.