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Method for preparing AlCrCN coating on surface of cold working die steel

A technology of cold work die steel and coating, which is applied to the preparation of AlCrCN coating on the surface of cold work die steel, and the surface modification treatment of cold work die steel, can solve the problems of wear and tear of Cr12MoV steel, and achieve the improvement of surface hardness, good bonding, The effect of ensuring the quality of the workpiece

Inactive Publication Date: 2019-01-22
YANGZHOU UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to propose a method for preparing AlCrCN coatings on the surface of cold-working die steel for the reason that Cr12MoV steel is prone to wear and scrap during work.

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  • Method for preparing AlCrCN coating on surface of cold working die steel
  • Method for preparing AlCrCN coating on surface of cold working die steel
  • Method for preparing AlCrCN coating on surface of cold working die steel

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Embodiment Construction

[0025] The technical scheme of the present invention is adopted below, and the present invention will be further described in conjunction with the accompanying drawings and examples.

[0026] (1) The substrate is Cr12MoV cold-work die steel. After grinding and polishing, the surface roughness Ra is 0.01 μm. It is ultrasonically cleaned in alcohol and acetone solutions for 15 minutes to remove oil stains, and it is dried before use.

[0027] (2) Put the sample into figure 1 Medium coating vacuum chamber with a vacuum degree of 10 -4 Pa, heated to 500°C and kept for 30 minutes. Firstly, argon gas was introduced to keep the pressure in the vacuum chamber at 1.0 Pa, the bias power was turned on, the voltage was 900V, the duty cycle was 0.2, the glow discharge was cleaned for 15 minutes, the bias voltage was reduced to 500V, and the ion source was turned on for 15 minutes of ion cleaning.

[0028] (3) Stop feeding argon, and after vacuuming the coating vacuum chamber to 0.5Pa, fe...

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Abstract

The invention discloses a preparation method for preparing an AlCrCN coating on the surface of a cold working die steel, and belongs to the technical field of material preparation, wherein the methodis scientific, and the preparation principle is clear. According to the present invention, ion plating is performed at a temperature of 500 DEG C, such that the deposition temperature cannot cause mold deformation, and the precision of the mold is easily maintained; the harness of the prepared coating is 3500 HV, such that the surface hardness of the mold is increased, the wear of the mold is reduced, and the quality of the processed work-piece is ensured; the AlCrCN coating and the substrate form the diffusion layer at the interface bonding position, and the elements of the diffusion layer are transitioned into the gradient, such that the bonding of the coating and the substrate is good; the amorphous C-C bond is formed in the AlCrCN coating, such that the self-lubricating effect is achieved so as to effectively reduce the friction factor; and the AlCrCN coating has advantages of ultra-high hardness, low friction factor, wear resistance and the like so as to further improve the surface hardness of the cold working die steel and prolong the service life by 3-5 times.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a method for preparing an AlCrCN coating on the surface of a cold-work die steel, in particular to a surface modification treatment method for a cold-work die steel that can improve wear resistance and prolong service life. Background technique [0002] Steel, as a basic alloy, is the most widely used metal in the world due to its low price and reliable mechanical properties. As one of the most important materials in the mold industry, mold steel has good corrosion resistance, wear resistance and mechanical strength, and is widely used in injection molding and sheet metal forming industries. In order to meet the manufacturing and use requirements of molds, many grades of mold steels have been researched and developed in recent years. However, with the rapid development of the steel industry and the mold industry, the requirements for the performance of the mold steel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/32C23C14/06C23C14/58
CPCC23C14/0641C23C14/32C23C14/5846
Inventor 孔维程沈辉金亦富刘彻高佳旭景陶敬王浩锦王永时荣光关栋
Owner YANGZHOU UNIV
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