Heat Treatment Gb 3cr2mo Steel Plastic Mould Materials - China

3Cr2Mo is a national standard grade, which corresponds to the American standard P20 - As a mold steel material, it is widely used in the processing and production of molds.

Its good mechanical properties and processability make this material occupy a better economic market., after a certain heat treatment process, the individual mechanical indicators of the material can be improved.

3Cr2Mo is a plastic mold steel widely used in the world.

It has good comprehensive mechanical properties and high hardenability.

It can make steel with larger cross-sections have a more uniform hardness, and has good polishing performance, and the mold surface has a high finish.

When using this steel to make molds, it is generally quenched and tempered to a hardness of HRC28 to 35 (i.e. pre-hardened), and then cold-processed to make the mold, which can be used directly.

In this way, the performance of the mold is ensured and deformation of the mold caused by heat treatment is avoided.

Therefore, this steel type is suitable for manufacturing large, medium and precise plastic molds and die-casting molds for low melting point tin, zinc and lead alloys.

Process specifications

Isothermal Annealing Specifications

Annealing temperature: (850±10)°C, holding for 2 hours, cooling to (720±10)°C in the furnace, holding for 4 hours, cooling in the furnace to below 500°C, air cooling after exiting the furnace, hardness ≤229HBW.

High temperature tempering specifications

Tempering temperature (730 ±10)°C, heat preservation for 2 hours, furnace cooling temperature ≤500°C, air cooling after discharge.

Quenching and tempering specifications

Quenching temperature is 850 ~ 880°C, oil cooling, hardness is 50 ~ 52HRC; tempering temperature is 580 ~ 640°C, air cooling after coming out of the furnace, hardness is 28 ~ 36HRC.

Pre-hardening treatment specifications

Heating temperature 860 ~900°C, oil cooling, tempering temperature 570 ~70O°C, air cooling, tempering hardness 28~35HRC.

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Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 0086 0769 85475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , GuangDong , China

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• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
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  Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on.
  
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