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A kind of processing technology of metal surface

A treatment process and metal surface technology, applied in the direction of metal material coating process, etc., can solve the problems of poor anti-corrosion effect, affecting normal use, rough and uneven metal surface, and achieve the effect of enhanced lubricity and improved passivation quality

Active Publication Date: 2022-03-11
伸荣(上海)水处理环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface treatment process is simple, just simply degreasing the metal surface, and cleaning the metal parts again by spraying; the cleaning effect of the treatment is low, the anti-corrosion effect is poor, and the metal surface is rough due to oxidation and corrosion, which affects normal use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 provides a kind of processing technology of metal surface, comprises the following several steps: (1) surface physical cleaning: metal workpiece is put into the ultrasonic cleaning machine of 200W and cleans for 30 minutes, removes the surface dust of metal workpiece; (2 ) surface grease cleaning: put the metal workpiece cleaned in step (1) into an alkaline treatment pool of 10wt% NaOH aqueous solution, and soak for 10 to 15 minutes; (3) oxide film removal treatment: the metal workpiece processed in step (2) Put into 10wt% oxalic acid deoxidizing film pool and soak for 80 seconds, take it out, put into clear water pool to clean, and dry; (4) electroplating treatment: metal workpiece is electroplated, and a layer of zinc plate is electroplated on the surface of metal workpiece; 5) Anti-corrosion treatment: put the electroplated metal workpiece into the passivation solution for passivation, soak for 2 minutes at 30° C., wash the taken out metal workpiece in th...

Embodiment 2

[0053] The specific implementation of the present embodiment is the same as embodiment 1, and difference is: chromium sulfate is 10 parts.

[0054] The metal workpiece processed in this embodiment is denoted as G2.

[0055] Example 2

[0056] The specific implementation of this example is the same as that of Example 1, except that the molar ratio of malic acid, fatty acid and methylene succinic acid is 1:2:1.

[0057] The metal workpiece processed in this embodiment is denoted as G3.

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PUM

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Abstract

The invention discloses a metal surface treatment process, the main steps of which are the following steps: putting a metal workpiece into a pool for removing oxide film for 60 to 80 seconds, then taking it out, putting it into a clear water pool for cleaning, and drying; Conduct electroplating, electroplate a layer of zinc plate on the surface of the metal workpiece; put the electroplated metal workpiece into the passivation solution for passivation, soak for 1-3 minutes at 25-40°C, and put the taken-out metal workpiece in the cleaning pool Wash for 10-15 minutes. In the present invention, by adding self-made passivation solution and limiting the raw material weight ratio and molar ratio of the passivation solution, the treated metal workpiece can obtain excellent corrosion resistance, fingerprint resistance and lubricity.

Description

technical field [0001] The invention relates to the field of surface treatment, in particular to a metal surface treatment process. Background technique [0002] Surface treatment is a method of artificially forming a surface layer on the surface of a base material with mechanical, physical and chemical properties different from that of the base. The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product. For metal castings, our more commonly used surface treatment methods are mechanical grinding, chemical treatment, surface heat treatment, surface spraying, and surface treatment is to clean, sweep, deburr, degrease, and descale the surface of the workpiece. [0003] Metal products have high strength, wear resistance, and excellent thermal conductivity. They are the most widely used materials in the world today. In addition, metal products are easy to recycle and have good environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/48C25D5/34C23C22/53C23C22/08
CPCC25D5/48C25D5/34C23C22/53C23C22/08C23C2222/10
Inventor 刘蕾蕾张杰史红玉李春燕张峰张翔
Owner 伸荣(上海)水处理环保工程有限公司
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