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Preparation process of novel mold material for extrusion twist drill

A technology of mold material and preparation process, which is applied in the field of preparation of mold materials for new extruded twist drills, can solve problems affecting the quality of stamping parts, affecting the service life of molds, wear and other problems, and achieves improved hardness and toughness and extended service life , the effect of increasing the tempering temperature

Inactive Publication Date: 2018-12-21
HENAN YIGONG DRILLING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Problems such as fracture and wear often occur in production, which seriously affect the service life of the mold and affect the product quality and quality of stamping parts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention provides a preparation process of a new mold material for extruding twist drills. The main chemical composition of the mold material is composed of C 1.48-1.55, Cr 12-13, Mo 0.45-0.50 and V 0.19-0.22. The preparation process includes heat treatment and nitriding treatment, and the heat treatment process steps are as follows:

[0025] (1) First put the mold into the furnace and use high-frequency heating. After heating to 1150~1200°C, oil cooling or graded cooling;

[0026] (2) Then temper the mold obtained after step (1) at 550~560°C for 5~6 times.

[0027] According to the above-mentioned preparation process of the mold material for the new extruded twist drill, the nitriding treatment is to carry out nitriding at 520~560°C when the nitrogen ratio is 50% after the mold workpiece is quenched and tempered with oil. deal with.

Embodiment 2

[0029] The invention provides a preparation process of a new mold material for extruding twist drills. The main chemical composition of the mold material is composed of C 1.5, Cr 12.5, Mo 0.45 and V 0.22. Its preparation process includes heat treatment and nitriding treatment , the heat treatment process steps are as follows:

[0030] (1) First put the mold into the furnace and use high-frequency heating. After heating to 1170°C, it is oil-cooled or graded-cooled;

[0031] (2) Then temper the mold obtained after step (1) at 550 for 5~6 times.

[0032] According to the above-mentioned preparation process of the mold material for the new extruded twist drill, the nitriding treatment is to carry out the nitriding treatment at 550° C. after the mold workpiece is quenched and tempered by oil, and the nitrogen ratio is 50%.

Embodiment 3

[0034] The invention provides a preparation process of a new mold material for extruding twist drills. The main chemical composition of the mold material is composed of C 1.48, Cr 13, Mo 0.45 and V 0.22. Its preparation process includes heat treatment and nitriding treatment , the heat treatment process steps are as follows:

[0035] (1) First put the mold into the furnace and use high-frequency heating. After heating to 1200°C, it is oil-cooled or graded-cooled;

[0036] (2) Then temper the mold obtained after step (1) at 550°C for 5 times.

[0037] According to the above-mentioned preparation process of the mold material for the new extruded twist drill, the nitriding treatment is to carry out the nitriding treatment at 540° C. after the mold workpiece is quenched and tempered by oil, and the nitrogen ratio is 50%.

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Abstract

The invention relates to a preparation process of a novel mold material for an extrusion twist drill., The main chemical components of the mold material consist of 1.48-1.55 of C, 12-13 of Cr, 0.45-0.50 of Mo, and 0.19-0.22 of V; the preparation process comprises heat treatment and nitriding treatment, wherein the heat treatment process comprises the following steps that (1) firstly, a mold is putinto a furnace to carry out high-frequency heating, and oil cooling or staged cooling is carried out after heating is carried out to 1150-1200 DEG C; and then (2), tempering is carried out at 550-560DEG C for 5-6 times on the obtained mold treated in the step (1). The service life of the mold is prolonged by the process, and the high-temperature resistance and the wear resistance of the mold areimproved.

Description

technical field [0001] The invention belongs to the technical field of preparation of metal materials, and in particular relates to a preparation process of a novel mold material for extruding twist drills. Background technique [0002] Stamping parts are important components in industrial manufacturing, and their product quality and production efficiency directly affect the production and competition of enterprises [0003] ability. In the production of stamping dies in my country and even in the world, the traditional manufacturing process is raw material blanking-annealing treatment-mechanical processing [0004] Work-final heat treatment-finishing, where the final heat treatment is to make the mold achieve the performance, the final heat treatment of the traditional process [0005] The art is quenching + low temperature tempering. [0006] The final heat treatment adopts the traditional treatment process, the mold has high strength and hardness, but low toughness, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C22C38/24C22C38/22C22C38/34C23C8/26C21D9/22
Inventor 张振刚朱世照李玉堂翟彦召刘瑞张文勇马明星王志新
Owner HENAN YIGONG DRILLING IND
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