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Surface treatment method of nonferrous metal workpiece

A surface treatment and non-ferrous metal technology, applied in the direction of anodic oxidation, coating, anti-corrosion coating, etc., can solve the problems of non-ferrous metal surface discoloration and low corrosion resistance, reduce corrosion rate, improve surface comprehensive performance, good hydrophilicity Sexual and protective effects

Inactive Publication Date: 2018-03-02
宝鸡市铭坤有色金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a surface treatment method for non-ferrous metal workpieces, which solves the current problems of non-ferrous metal surface discoloration and low corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Select a steel plate, first in the mass concentration of 5% HF and mass concentration of 10% HNO 3 Carry out chemical polishing in the composed chemical polishing solution to improve the brightness of the fine sand on the surface of the workpiece, then soak in the surface treatment agent for 10 minutes, take out the steel plate, and dry it with an industrial dryer at a temperature of 130°C. The steel plate is placed in the electrolyte solution, an oxide film is formed on the surface by applying anodic current, and finally the steel plate is polished by a grinder.

[0030] The components and mass percentages of the surface treatment agent during soaking are as follows: corrosion inhibitor 11%, surfactant 11%, antioxidant 0.05%, silicon dioxide 15%, and water as the balance.

[0031] Through the above steps, a steel plate with good gloss and high corrosion resistance can be obtained.

Embodiment 2

[0033] Take a piece of H59 copper test piece, first in HF with a mass concentration of 5% and with a mass concentration of 10% HNO 3 Carry out chemical polishing in the composed chemical polishing liquid to improve the brightness of the fine sand on the surface of the workpiece; then soak in the surface treatment agent for 15 minutes, and dry it with an industrial dryer at a temperature of 140 ° C, and dry the dried copper sample The sheet is placed in the electrolyte solution, an oxide film is formed on the surface by applying anodic current, and finally the copper test sheet is polished by a grinder.

[0034] The components and mass percentages of the surface treatment agent during soaking are as follows: corrosion inhibitor 13%, surfactant 15%, antioxidant 0.05%, silicon dioxide 18%, and water as the balance.

[0035] The copper test piece obtained through the above steps has good gloss and strong corrosion resistance.

Embodiment 3

[0037] Take a piece of aluminum workpiece, first in HF with a mass concentration of 5% and with a mass concentration of 10% HNO 3 Carry out chemical polishing in the composed chemical polishing liquid, improve the brightness of the fine sand on the surface of the workpiece; then soak in the surface treatment agent for 13 minutes; take out the aluminum workpiece, and use an industrial dryer to dry it at a temperature of 150°C; The dried aluminum workpiece is placed in the electrolyte solution, and an oxide film is formed on the surface by applying anodic current, and finally the aluminum workpiece is polished with a grinding wheel.

[0038] The components and mass percentages of the surface treatment agent during soaking are as follows: corrosion inhibitor 15%, surfactant 18%, antioxidant 0.05%, silicon dioxide 20%, and water as the balance.

[0039] The aluminum workpiece obtained through the above steps has good surface color and high corrosion resistance.

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PUM

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Abstract

The invention discloses a surface treatment method of a nonferrous metal workpiece. The surface treatment method of the nonferrous metal workpiece comprises the steps of chemical polishing, surface treating agent dipping, drying, anode oxidation treatment and polishing and the like. By the adoption of the surface treatment method of the nonferrous metal workpiece, burrs and material marks on the surface of the nonferrous metal workpiece are removed, a silicon dioxide protective film is formed on the surface of the nonferrous metal, the surface corrosion rate of the nonferrous metal is lowered,surface discoloring and crystal precipitation of the nonferrous metal are prevented, the glossiness of the surface of the nonferrous metal is kept, and the comprehensive performance of the surface ofthe nonferrous metal is improved.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal surface treatment, and relates to a surface treatment method for nonferrous metal workpieces. Background technique [0002] Non-ferrous metals prepared by different metal surface treatment processes have very different surface properties. Many non-ferrous metal surface treatment processes currently used include pickling, polishing, sandblasting, etc. After treatment, the surface is still dark, the efficiency is low, and complex workpieces are not easy to handle, all of which have their defects and limitations. [0003] In the traditional industry, each different material needs different treatment agents to carry out, which is costly and long in process. At the same time, due to the poor continuity of production during the cleaning process, the pollution discharge load is increased; and after a period of time after cleaning, the workpiece needs to be cleaned again, the antibacterial perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/02C23F3/00C23F11/10C09D1/00C09D7/61C09D7/63C09D7/65C09D5/08
CPCC25D11/02C09D1/00C09D5/08C23F3/00C23F11/10
Inventor 沈小利牛会梅
Owner 宝鸡市铭坤有色金属有限公司
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