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A method for anodizing and coloring titanium products

An anodizing and product technology, applied in the direction of coating, surface reaction electrolytic coating, electrolytic coating, etc., can solve the problems of easy pollution on the surface of oxide film, easy color change, affecting decorative effect, etc., and achieve good surface decorative effect. , Not easy to be polluted, good surface hardness effect

Active Publication Date: 2021-08-24
西安庄信新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the surface of the oxide film obtained by the traditional titanium alloy anodizing process in the prior art is easily polluted, and the color is easy to change after fingerprint pollution, and it is not easy to recover after being polluted, which seriously affects its decorative effect. , providing a method for anodizing and coloring titanium products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for anodizing and coloring a titanium product of the present embodiment includes the following steps:

[0024] S1, pretreatment, put the titanium product into the alkaline washing solution under the condition of 75 ℃ and ultrasonic to carry out alkaline washing and degreasing; wherein, the alkaline washing solution includes sodium carbonate 25g / L, sodium phosphate 25g / L and sodium silicate 20g / L, and the alkaline washing time is 15 minutes.

[0025] S2, anodic oxidation, put the titanium products treated by S1 into a pickling solution with a concentration of 35%, composed of 55mg / L phosphoric acid and 100mg / L nitric acid for pickling treatment, and then rinse with deionized water, put The anodic oxidation solution was electrolyzed at 20°C, the current density was 8 A / dm, and the voltage was 35 V. The anodic oxidation solution included 30 parts of sodium hydrogen phosphate, 20 parts of sulfuric acid, and 10 parts of potassium permanganate. , 10 parts of ammoni...

Embodiment 2

[0029] Compared with Embodiment 1, the method for anodizing and coloring a titanium product in this embodiment is different in that:

[0030] S1, pretreatment, put the titanium product into the alkaline washing solution under the condition of 80 ℃ and ultrasonic to carry out alkaline washing and degreasing; wherein, the alkaline washing solution includes sodium carbonate 27g / L, sodium phosphate 27g / L and sodium silicate 23g / L, and the alkaline washing time is 20 minutes.

[0031] S2, anodic oxidation, put the titanium products treated by S1 into a pickling solution with a concentration of 35%, which is composed of 66mg / L phosphoric acid and 125mg / L nitric acid for pickling treatment, and then rinse with deionized water. The anodic oxidation solution was electrolyzed at 25°C, the current density was 10 A / dm, and the voltage was 60 V. The anodic oxidation solution included 40 parts of sodium hydrogen phosphate, 30 parts of sulfuric acid, 15 parts of potassium permanganate, 15 ...

Embodiment 3

[0035] Compared with Embodiment 1, the method for anodizing and coloring a titanium product in this embodiment is different in that:

[0036] S1, pretreatment, put the titanium product into the alkaline washing solution under the condition of 85 ℃ and ultrasonic to carry out alkaline washing and degreasing; wherein, the alkaline washing solution includes sodium carbonate 30g / L, sodium phosphate 30g / L and sodium silicate 25g / L, and the alkaline washing time is 25 minutes.

[0037] S2, anodic oxidation, put the titanium products treated by S1 into a pickling solution with a concentration of 35%, which is composed of 75mg / L phosphoric acid and 150mg / L nitric acid for pickling treatment, and then rinse with deionized water. The anodic oxidation solution was electrolyzed at 30°C, the current density was 12 A / dm, and the voltage was 100 V. The anodic oxidation solution included 50 parts of sodium hydrogen phosphate, 40 parts of sulfuric acid, 20 parts of potassium permanganate, 20...

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PUM

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Abstract

The invention relates to the field of anodic oxidation for metal surface treatment, in particular to a method for anodic oxidation and coloring of titanium products, comprising the following steps: pretreatment, putting the titanium products into an alkali cleaning solution under the condition of 75-85°C and ultrasonic waves for alkali Washing and removing oil; anodizing, put the titanium products treated by S1 into the pickling solution for pickling treatment, then rinse with deionized water, put them in the anodizing solution for electrolytic treatment, the anodizing solution includes hydrogen phosphate Sodium, sulfuric acid, potassium permanganate, ammonium fluoride, and the rest is distilled water; for subsequent treatment, put the anodized and colored titanium product into boiling water and clean it with ultrasonic vibration, seal it, take it out and dry it, and then get the colored titanium product. products. The method of the present invention solves the problem that the surface of the oxide film obtained by the traditional titanium alloy anodizing process in the prior art is easily polluted, and the color is easy to change after fingerprint pollution, and it is not easy to recover after being polluted, which seriously affects its decorative effect The problem.

Description

technical field [0001] The invention relates to the field of metal surface treatment anodizing, in particular to a method for anodizing and coloring titanium products. Background technique [0002] In recent years, titanium and titanium alloys have attracted more and more attention because of their unique properties, so they are widely used in various fields such as national defense cutting-edge technology, civil industry, and livelihood products. For example: in aerospace, titanium and titanium alloys are used in the production of a new generation of aircraft due to their small specific gravity, light weight and high specific strength; in medicine, titanium and titanium alloys have good corrosion resistance, good biocompatibility, and are compatible with It has low human rejection and is widely used in dental and bone implants, as well as in medical fields such as vascular stents, and has become a compelling biometal material; in construction, due to the unique characterist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26C23G1/20C23G1/10
CPCC23G1/106C23G1/205C25D11/26
Inventor 郭磊侯军涛卢金武鲁毅王尧
Owner 西安庄信新材料科技有限公司