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Preparation method of protective coating based on working surface of mould matrix

A technology for working surface and protective coating, applied in the field of preparation of protective coating, can solve the problems of low bonding strength, etc., and achieve the effects of good wear resistance and lubricity, simple and convenient operation, and improved bonding strength

Active Publication Date: 2016-04-20
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the object of the present invention is to provide a method for preparing a protective coating based on the working surface of the mold base, which can prepare a protective coating with high bonding strength, high wear resistance and high lubrication on the working surface of the mold base. The protective coating not only solves the problem of low interface bonding strength between the traditional hard layer and lubricating layer, but also prolongs the life of the mold

Method used

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  • Preparation method of protective coating based on working surface of mould matrix
  • Preparation method of protective coating based on working surface of mould matrix
  • Preparation method of protective coating based on working surface of mould matrix

Examples

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Embodiment 1

[0035] The invention provides a protective coating based on the working surface of the mold substrate, the preparation process of the coating is as follows figure 1 As shown, it includes the following steps:

[0036] 1) Cleaning of parts

[0037] Put the substrate to be processed in acetone solution, and then put it into an ultrasonic cleaning test machine for ultrasonic cleaning. The cleaning time is 30 minutes; Ultrasonic cleaning, the cleaning time is 30min, and finally the substrate is dried with a hair dryer.

[0038] 2) Preparation of hard wear-resistant coating

[0039] Put the base material in the spraying workshop, fill the spraying filling port with an appropriate amount of SiC powder, and use low-temperature plasma spraying technology for spraying (such as figure 2 Shown), during the spraying process, a hard wear-resistant coating with a thickness of 200 μm was prepared on the working surface of the substrate by adjusting the spraying process parameters.

[004...

Embodiment 2

[0047] This embodiment provides a protective coating based on the working surface of the mold substrate, the preparation process of the layer is as follows figure 1 As shown, it includes the following steps:

[0048] 1) Cleaning of parts

[0049] Put the substrate to be processed in acetone solution, and then put it into an ultrasonic cleaning test machine for ultrasonic cleaning. The cleaning time is 30 minutes; Ultrasonic cleaning, the cleaning time is 30min, and finally the substrate is dried with a hair dryer.

[0050] 2) Preparation of hard wear-resistant coating

[0051] Put the base material in the spraying workshop, fill the spray filler port with an appropriate amount of alumina powder, and use low-temperature plasma spraying technology for spraying. During the spraying process, adjust the spraying process parameters to obtain a hard and durable surface with a thickness of 200 μm. Grinding coating.

[0052] 3) Preparation of microstructure

[0053] Laser drilling...

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Abstract

The invention provides a preparation method of a protective coating based on a working surface of a mould matrix. The preparation method comprises the steps that 1) first paint is sprayed on the working surface of the mould matrix to form a hard wear-resistant coating; 2) an inward sunk microstructure is prepared on the surface of the hard wear-resistant coating; and 3) second paint is sprayed on the surface of the hard wear-resistant coating to form a lubricant coating, thereby accomplishing the preparation of the protective coating based on the working surface of the mould matrix. With the adoption of the preparation method, the protective coating having high bonding strength, wear resistance and lubricating property can be prepared on the working surface of the mould matrix, the problem that the interface bonding strength between the traditional hard wear-resistant layer and the traditional lubricant coating is low is solved, and the life of a mould is prolonged.

Description

technical field [0001] The invention relates to a method for preparing a protective coating based on the working surface of a mold base body, and belongs to the technical field of mold protection. Background technique [0002] During the process of processing the workpiece, the mold bears large frictional force, deformation compression force and tensile force. At the same time, a faster processing speed is required to ensure the yield rate, and fast friction can easily lead to increased local wear of the mold and thermal effects. The above-mentioned complex and harsh All working conditions have a negative impact on the life of the mold, resulting in a reduction in its life. In terms of failure factors, it involves the structural design of the overall mold and its parts, material selection and use, mold assembly, use, maintenance, maintenance, etc. As far as the external causes of failure are concerned, they are closely related to working conditions, including: stress conditi...

Claims

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Application Information

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IPC IPC(8): C23C28/04
CPCC23C28/04
Inventor 刘星马国佳孙刚张伟
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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