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Phosphorus-free abrasion-resisting steel passivation treatment method

A passivation treatment and wear resistance technology, applied in the direction of metal material coating process, etc., can solve problems such as a large number of phosphorus-containing wastewater, and achieve the effect of increasing reaction area, strong wear resistance, and reducing artificial use.

Inactive Publication Date: 2014-11-19
合肥奥福表面处理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common practice is to passivate the surface of steel, that is, to carry out phosphating treatment on the surface of steel to increase the corrosion resistance and wear resistance of steel. Since this process will produce a large amount of phosphorus-containing wastewater, it cannot meet the requirements Today's Environmental Requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] When implementing the steel passivation process, it generally needs to go through several steps such as cleaning and degreasing→water washing→micro-etching→water washing→passivation→water washing→drying. The treatment temperature of each step is 25°C and the treatment time is 5 minutes. The specific steps of this example are as follows:

[0018] (1) Cleaning and degreasing: use cleaning liquid to clean and degrease the steel surface; the main weight percentage composition of the cleaning liquid is shown in Table 1;

[0019] (2) Microetching treatment: Microetching treatment is performed on the steel surface treated in step (1) using a microetching solution; the main weight percentage composition of the microetching solution is shown in Table 2;

[0020] (3) Passivation treatment: use a passivation solution to passivate the steel surface treated in step (2); the main weight percentage composition of the passivation solution is shown in Table 3.

[0021] The steel cleani...

Embodiment 2

[0030] When implementing the steel passivation process, it generally needs to go through several steps such as cleaning and degreasing→water washing→micro-etching→water washing→passivation→water washing→drying. The treatment temperature of each step is 25°C and the treatment time is 5 minutes. The specific steps of this example are as follows:

[0031] (1) Cleaning and degreasing: use cleaning liquid to clean and degrease the steel surface; the main weight percentage composition of the cleaning liquid is shown in Table 4;

[0032] (2) Micro-etching treatment: Micro-etching treatment is carried out on the steel surface treated in step (1) using a micro-etching solution; the main weight percentage composition of the micro-etching solution is shown in Table 5;

[0033] (3) Passivation treatment: use a passivation solution to passivate the steel surface after step (2); the main weight percentage composition of the passivation solution is shown in Table 6.

[0034] The steel clean...

Embodiment 3

[0043] When implementing the steel passivation process, it generally needs to go through several steps such as cleaning and degreasing→water washing→micro-etching→water washing→passivation→water washing→drying. The treatment temperature of each step is 25°C and the treatment time is 5 minutes. The specific steps of this example are as follows:

[0044] (1) Cleaning and degreasing: use cleaning liquid to clean and degrease the steel surface; the main weight percentage composition of the cleaning liquid is shown in Table 7;

[0045] (2) Micro-etching treatment: Micro-etching treatment is performed on the steel surface treated in step (1) using a micro-etching solution; the main weight percentage composition of the micro-etching solution is shown in Table 8;

[0046] (3) Passivation treatment: use a passivation solution to passivate the steel surface after step (2); the main weight percentage composition of the passivation solution is shown in Table 9.

[0047] The steel cleanin...

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PUM

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Abstract

The invention discloses a process for improving the abrasion resistance of steel by using a soaking method. The process comprises the following steps: (1) washing and removing oil, namely, removing dirty stain and grease on the surface of steel; (2) micro-etching, namely, micro-etching the surface of steel by using a chemical method so as to increase the reaction area of a steel workpiece; and (3) passivating, namely, depositing a layer of chromium potassium sulfate and cobaltous sulfate onto the surface of steel after micro-etching, and reacting with steel to generate a steel mixture, wherein the steel mixture has a relatively high binding capability with steel and is good in abrasion resistance. The treated steel is good in abrasion resistance, and compared with a conventional phosphorization process, according to the process disclosed by the invention, the water and power consumption is reduced, the labor is reduced, the production efficiency is improved, and pollution caused by phosphorus wastewater is avoided.

Description

technical field [0001] The invention relates to a phosphorus-free wear-resistant steel passivation treatment method. Background technique [0002] With the increasing development of the surface treatment industry, the market has put forward higher requirements for the functionality of steel products. At present, the common practice is to passivate the surface of steel, that is, to carry out phosphating treatment on the surface of steel to increase the corrosion resistance and wear resistance of steel. Since this process will produce a large amount of phosphorus-containing wastewater, it cannot meet the requirements Today's environmental requirements. Therefore, there is an urgent need in the market for an environmentally friendly steel passivation process that can not only meet the corrosion resistance and wear resistance requirements of steel, but also reduce environmental pollution. Contents of the invention [0003] The object of the present invention is to provide ...

Claims

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Application Information

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IPC IPC(8): C23C22/50C23C22/78
Inventor 朱虹张毅孙颖睿
Owner 合肥奥福表面处理科技有限公司
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