Nonferrous metal part micro-arc oxidation protective agent and local protection method

A micro-arc oxidation, non-ferrous metal technology, used in anodizing, coating, surface reaction electrolytic coating, etc., can solve the problems of large influence of geometric shape and size, difficult to widely use, complicated operation, etc., to achieve good protection effect, Broad application prospects, simple operation effect

Active Publication Date: 2020-03-06
CSIC NO 12 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of method can also achieve local protection of parts by micro-arc oxidation, the operation is complicated, and the actual engineering use process is greatly affected by the geometric shape and size of the parts to be treated, especially for some cavities and parts with complex shapes. widely used

Method used

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  • Nonferrous metal part micro-arc oxidation protective agent and local protection method
  • Nonferrous metal part micro-arc oxidation protective agent and local protection method

Examples

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Effect test

Embodiment 1

[0053] This embodiment provides a micro-arc oxidation protection agent for non-ferrous metal parts, which includes silicone rubber, polyvinyl butyral PVB and epoxy resin at a mass ratio of 4:2:0.5.

[0054] This embodiment also provides a local protection method for micro-arc oxidation of non-ferrous metal parts, which protects the edge area on the ZL205A aluminum alloy parts that needs to be protected, and specifically implements according to the following steps:

[0055] Step 1. Part surface pretreatment

[0056] Use acetone to degrease the area on the ZL205A aluminum alloy parts that needs to be protected, use deionized water to clean, and dry.

[0057] Step 2, preparation of protective agent

[0058] Step 2.1, according to the mass ratio silicone rubber: PVB: epoxy resin=4:2:0.5, get quantitative silicone rubber, polyvinyl butyral PVB and epoxy resin;

[0059] Step 2.2, place quantitative silicone rubber in the container, add quantitative PVB, and stir continuously durin...

Embodiment 2

[0069] This embodiment provides a micro-arc oxidation protective agent for non-ferrous metal parts, which includes silicone rubber, polyvinyl butyral PVB and epoxy resin at a mass ratio of 8:4:1.

[0070] This embodiment also provides a partial protection method for micro-arc oxidation of non-ferrous metal parts, which protects the edge area to be protected on the MB5 magnesium alloy parts, and specifically implements according to the following steps:

[0071] Step 1. Part surface pretreatment

[0072] Use acetone to degrease the area on the MB5 magnesium alloy parts that needs to be protected, use deionized water to clean, and dry.

[0073] Step 2, preparation of protective agent

[0074] Step 2.1, according to the mass ratio silicone rubber: PVB: epoxy resin=8:4:1, get quantitative silicone rubber, polyvinyl butyral PVB and epoxy resin;

[0075] Step 2.2, place quantitative silicone rubber in the container, add quantitative PVB, and stir continuously during the process of ...

Embodiment 3

[0085] This embodiment provides a micro-arc oxidation protection agent for non-ferrous metal parts, which includes silicone rubber, polyvinyl butyral PVB and epoxy resin at a mass ratio of 5:3:0.6.

[0086] This embodiment also provides a local protection method for micro-arc oxidation of non-ferrous metal parts, which is specifically implemented according to the following steps:

[0087] Step 1. Part surface pretreatment

[0088] The area to be protected by micro-arc oxidation is degreased with acetone, cleaned with deionized water, and dried.

[0089] Step 2, preparation of protective agent

[0090] Step 2.1, according to the mass ratio silicone rubber: PVB: epoxy resin=5:3:0.6, get quantitative silicone rubber, polyvinyl butyral PVB and epoxy resin;

[0091] Step 2.2, place quantitative silicone rubber in the container, add quantitative PVB, and stir continuously during the process of adding PVB to obtain the silicone rubber PVB mixed solution;

[0092] Step 2.3: Add a c...

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Abstract

The invention discloses a nonferrous metal part micro-arc oxidation protective agent comprising silicon rubber, polyvinyl butyral PVB and epoxy resin, wherein the mass ratio of the silicon rubber to the polyvinyl butyral PVB to the epoxy resin is 4-8:2-4:0.5-1. The nonferrous metal part micro-arc oxidation protective agent can resist impact of instant high temperature and continuous discharge fora long time and protects the area needing local protection on the part during micro-arc oxidation. The invention further discloses a local protection method for nonferrous metal part micro-arc oxidation. The local protection method comprises the steps of part surface pretreatment, protective agent preparation, part local protection treatment, micro-arc oxidation treatment and cleaning, and finallymicro-arc oxidation local protection of the part is completed. The nonferrous metal part micro-arc oxidation protective agent is not limited by the shape and size of the part, the surface of the partneeding protection is selectively protected from being oxidized by electrolyte, so that the original machining state of the part is prevented from being changed.

Description

technical field [0001] The invention belongs to the technical field of material surface engineering, in particular to a micro-arc oxidation protective agent for non-ferrous metal parts, and also relates to a partial protection method for non-ferrous metal parts by micro-arc oxidation. Background technique [0002] Micro-arc oxidation is a surface treatment technology that has developed rapidly in recent years. It puts Al, Mg, Ti, Ta, Nb and other valve metals and their alloys in a special electrolyte as a whole, and uses electrochemical methods to generate sparks in the micropores on the surface of the material. Discharge spots, under the joint action of thermochemistry, plasma chemistry and electrochemistry, a ceramic film layer with the matrix as the main oxide is formed in situ on the surface of the valve metal. The film layer obtained by this method has particularly excellent properties, such as high hardness, strong corrosion resistance, insulation, high temperature imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/02C25D11/04C25D11/30
CPCC25D11/026C25D11/022C25D11/04C25D11/30
Inventor 韩新罡魏刚尤社社王通平张威张柄楠
Owner CSIC NO 12 RES INST
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