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Surface hardening treatment method for metal stamping die

A technology of hardening treatment and metal stamping, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve problems affecting production and processing efficiency, impact of wear resistance and hardness, and increase maintenance frequency, etc., to achieve Eliminate repeated mold unloading, good lubricity, and reduce the frequency of maintenance

Inactive Publication Date: 2020-08-14
徐州百惠模具制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although metal stamping dies have certain hardness and wear resistance, their wear resistance and hardness will also be affected after long-term use, which will increase the friction coefficient, poor lubricity, and increase processing force, which not only seriously affects The life of the mold will also affect the quality of the product, resulting in roughening and straining of the product. In addition, it will increase the frequency of maintenance. It is often necessary to unload the mold, polish it, and reinstall the mold, which affects the efficiency of production and processing.

Method used

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  • Surface hardening treatment method for metal stamping die

Examples

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Effect test

Embodiment 1

[0044] The invention discloses a surface hardening treatment method for metal stamping dies. figure 1 shown, including the following steps:

[0045] S1. Preliminary inspection

[0046] Preliminary inspection of whether the metal stamping dies to be treated meet the requirements of surface hardening treatment;

[0047] Wherein, the material type of the metal stamping die includes die steel, structural steel with a carbon content greater than 0.3%, cast iron and hard alloy.

[0048] S2, front polishing

[0049] Polish the surface of the metal mold that meets the requirements of the preliminary inspection, and remove the foreign matter and / or impurities adhered to the surface;

[0050] S3, surface nitriding

[0051] Nitriding the metal mold surface also includes the following sub-steps:

[0052] S31, degreasing the surface of the metal mold in S2 using a gas degreasing method;

[0053] S32, placing the metal mold treated in S31 in a nitriding furnace, sealing the furnace co...

Embodiment 2

[0073] The invention discloses a surface hardening treatment method for metal stamping dies. figure 1 shown, including the following steps:

[0074] S1. Preliminary inspection

[0075] Preliminary inspection of whether the metal stamping dies to be treated meet the requirements of surface hardening treatment;

[0076] Wherein, the material type of the metal stamping die includes die steel, structural steel with a carbon content greater than 0.3%, cast iron and hard alloy.

[0077] S2, front polishing

[0078] Polish the surface of the metal mold that meets the requirements of the preliminary inspection, and remove the foreign matter and / or impurities adhered to the surface;

[0079] S3, surface nitriding

[0080] Nitriding the metal mold surface also includes the following sub-steps:

[0081] S31, degreasing the surface of the metal mold in S2 using a gas degreasing method;

[0082] S32, placing the metal mold treated in S31 in a nitriding furnace, sealing the furnace co...

Embodiment 3

[0103] The invention discloses a surface hardening treatment method for metal stamping dies. figure 1 shown, including the following steps:

[0104] S1. Preliminary inspection

[0105] Preliminary inspection of whether the metal stamping dies to be treated meet the requirements of surface hardening treatment;

[0106] Wherein, the material type of the metal stamping die includes die steel, structural steel with a carbon content greater than 0.3%, cast iron and hard alloy.

[0107] S2, front polishing

[0108] Polish the surface of the metal mold that meets the requirements of the preliminary inspection, and remove the foreign matter and / or impurities adhered to the surface;

[0109] S3, surface nitriding

[0110] Nitriding the metal mold surface also includes the following sub-steps:

[0111] S31, degreasing the surface of the metal mold in S2 using a gas degreasing method;

[0112] S32, placing the metal mold treated in S31 in a nitriding furnace, sealing the furnace co...

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Abstract

The invention discloses a surface hardening treatment method for a metal stamping die. The surface hardening treatment method for the metal stamping die comprises the steps of preliminary inspection,pre-polishing, surface nitriding, secondary polishing, coating, post-polishing and finished product inspection. The surface of the metal die is treated by a PVD coating process to form a hard coatingon the surface of the metal die. The surface abrasion resistance of the metal stamping die can be improved, hardness is higher, and the life of the metal die is greatly prolonged; the low friction coefficient results in good lubricity and reduced machining stress; the chemical corrosion resistance ability of the metal die is greatly improved; the machining quality is improved, the product is prevented from galling and straining, the product quality is improved, and the cost is reduced; the frequency of maintenance is reduced, the trouble of repeated die removal polishing and then die-assembling is omitted , and the efficiency is improvd.

Description

technical field [0001] The invention belongs to the technical field of mold surface treatment, and in particular relates to a surface hardening treatment method for metal stamping molds. Background technique [0002] Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing, called cold stamping die (commonly known as cold stamping die). Stamping is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation to obtain the required parts. [0003] The materials for making stamping dies include steel, hard alloy, steel-bonded hard alloy, zinc-based alloy, low melting point alloy, aluminum bronze, polymer material and so on. Most of the materials for manufacturing stamping dies are mainly steel. The types of commonly used die working parts materials are: carbon tool steel, low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/24C23C8/48C23C8/62C23C8/02C23C8/80
CPCC23C8/02C23C8/24C23C8/48C23C8/62C23C8/80
Inventor 刘飞
Owner 徐州百惠模具制造有限公司
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