A heat treatment method for h13 die steel

A heat treatment method and die steel technology, applied in solid diffusion coating, coating, metal material coating technology and other directions, can solve problems such as hidden safety hazards, vague steps, difficult operation and processing, etc., and achieve improved mechanical properties, steps Detail, the effect of increasing hardness

Active Publication Date: 2021-06-08
襄阳新东特锻造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The steps of the heat treatment method for H13 die steel in the prior art are ambiguous, the operation and processing are difficult, and there are safety hazards during processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A heat treatment method for H13 die steel, comprising the steps of:

[0020] S1. Annealing: Annealing includes two parts of stress relief annealing in the process of making the forged spheroidizing annealing box mold, and the details of the two parts are as follows:

[0021] 1) Spheroidizing annealing: After the die steel is forged, the internal structure of the steel becomes an unstable crystal, which has high hardness and is difficult to cut, and the steel in this state has a large internal stress, and is easy to deform and quench after processing. Poor, spheroidizing annealing is necessary to transform the carbide crystal into a spheroidized stable structure. During the annealing process, the mold is placed in a heating furnace, the temperature is heated to 900 degrees Celsius, and the temperature is kept for 3 hours. , when the furnace cools to 400 degrees Celsius, remove the mold from the heating furnace;

[0022] 2) Stress relief annealing: Machining the mold ste...

Embodiment 2

[0028] A heat treatment method for H13 die steel, comprising the steps of:

[0029] S1. Annealing: Annealing includes two parts of stress relief annealing in the process of making the forged spheroidizing annealing box mold, and the details of the two parts are as follows:

[0030] 1) Spheroidizing annealing: After the die steel is forged, the internal structure of the steel becomes an unstable crystal, which has high hardness and is difficult to cut, and the steel in this state has a large internal stress, and is easy to deform and quench after processing. Poor, spheroidizing annealing is necessary to transform the carbide crystal into a spheroidized stable structure. During the annealing process, the mold is placed in a heating furnace, the temperature is heated to 920 degrees Celsius, and the temperature is kept for 4 hours. , when the furnace cools to 440 degrees Celsius, remove the mold from the heating furnace;

[0031] 2) Stress relief annealing: Machining the mold ste...

Embodiment 3

[0037] A heat treatment method for H13 die steel, comprising the steps of:

[0038] S1. Annealing: Annealing includes two parts of stress relief annealing in the process of making the forged spheroidizing annealing box mold, and the details of the two parts are as follows:

[0039]1) Spheroidizing annealing: After the die steel is forged, the internal structure of the steel becomes an unstable crystal, which has high hardness and is difficult to cut, and the steel in this state has a large internal stress, and is easy to deform and quench after processing. Poor, spheroidizing annealing is necessary to transform the carbide crystal into a spheroidized stable structure. During the annealing process, put the mold into the heating furnace, heat the temperature to 950 degrees Celsius, and keep it for 5 hours. After the heat preservation, cool it down to 740 degrees Celsius and keep it for 6 hours. , when the furnace cools to 480 degrees Celsius, remove the mold from the heating fur...

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Abstract

The invention relates to the technical field of heat treatment of die steel. The invention discloses a heat treatment method for H13 die steel, which includes annealing, tempering, quenching, nitriding and surface cleaning. The steps of the invention are detailed and can improve the mechanical properties of materials and eliminate residual Stress and improve the machinability of metal, but also improve the hardness, wear resistance, corrosion resistance and strength of H13 die steel, extending the service life of the equipment.

Description

technical field [0001] The invention relates to the technical field of die steel heat treatment, in particular to a heat treatment method for H13 die steel. Background technique [0002] H13 die steel has high toughness and resistance to cold and heat fatigue, is not easy to produce thermal fatigue cracks, and has strong anti-bonding ability, and has little interaction with molten metal. [0003] The steps of the heat treatment method for H13 die steel in the prior art are ambiguous, the operation and processing are relatively difficult, and there are potential safety hazards during processing. Contents of the invention [0004] The present invention proposes a heat treatment method for H13 die steel to solve the problems raised in the above-mentioned background technology. [0005] The present invention proposes a kind of H13 mold steel heat treatment method, comprises the following steps: [0006] S1. Annealing: Annealing includes two parts of stress relief annealing i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/32C21D1/30C21D1/18C23C8/26
Inventor 窦锐史小勇
Owner 襄阳新东特锻造有限公司
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