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Titanium product anodic oxidation coloring method

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

Active Publication Date: 2020-05-08
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 anodic oxidation and coloring of titanium products in this embodiment comprises the following steps:

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

[0025] S2, anodic oxidation, put the titanium product treated by S1 into a pickling solution with a concentration of 35% consisting of 55 mg / L phosphoric acid and 100 mg / L nitric acid for pickling treatment, then rinse with deionized water, and put Put it into the anodic oxidation solution for electrolytic treatment, the electrolysis temperature is 20°C, the current density is 8 A / dm, and the voltage is 35 V, wherein the anodic oxidation solution includes 30 parts of sodium hydrogen phosphate, 20 parts of sulfu...

Embodiment 2

[0029] Compared with Example 1, a method for anodizing and coloring titanium products of this example is different in that:

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

[0031] S2, anodic oxidation, put the titanium product treated by S1 into a pickling solution with a concentration of 35% consisting of 66 mg / L phosphoric acid and 125 mg / L nitric acid for pickling treatment, then rinse with deionized water, and put into the anodic oxidation solution for electrolytic treatment, the electrolysis temperature is 25°C, the current density is 10 A / dm, and the voltage is 60 V, wherein the anodic oxidation solution includes 40 parts of sodium hydrogen phosphate, 30 parts of sulfuric...

Embodiment 3

[0035] Compared with Example 1, a method for anodizing and coloring titanium products of this example is different in that:

[0036] S1, pretreatment, put the titanium product into the alkaline cleaning solution under the condition of 85°C and ultrasonic wave for alkaline cleaning and degreasing; wherein, the alkaline cleaning 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 product treated by S1 into a pickling solution with a concentration of 35% consisting of 75mg / L phosphoric acid and 150mg / L nitric acid for pickling treatment, then rinse with deionized water, and put into the anodic oxidation solution for electrolytic treatment, the electrolysis temperature is 30°C, the current density is 12 A / dm, and the voltage is 100 V, wherein the anodic oxidation solution includes 50 parts of sodium hydrogen phosphate, 40 parts of sulfuric acid, 20 ...

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Abstract

The invention relates to the field of anodic oxidation of metal surface treatment, in particular to a titanium product anodic oxidation coloring method which comprises the following steps: pretreatment: putting a titanium product in soda-wash solution under 75-85 DEG C ultrasonic condition for soda-wash oil removal; anodic oxidation: putting the titanium product treated in S1 in acid pickling solution for acid pickling treatment, then, adopting deionized water for flushing, putting in anodic oxidation solution for electrolytic treatment, wherein the anodic oxidation solution comprises dibasicsodium phosphate, sulfuric acid, potassium permanganate, ammonium fluoride and the balance of distilled water; and follow-up treatment: putting the titanium product after anodic oxidation coloring treatment in boiling water, carrying out ultrasonic vibration cleaning and sealing, taking the titanium product out, and drying the titanium product to obtain the colored titanium product. With adoptionof the titanium product anodic oxidation coloring method, the problems in the prior art that the surface of an oxidation film obtained through the traditional titanium alloy anodic oxidation technology is likely to be polluted, the color is likely to change after fingerprint pollution, and the polluted oxidation film is difficult to recover to seriously affect the decoration effect are solved.

Description

technical field [0001] 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. 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 people's livelihood products. For example: in aerospace, titanium and titanium alloys are used in the production of new-generation aircraft due to their small specific gravity, light weight, and high specific strength; in medicine, titanium and titanium alloys have good corrosion resistance and good biocompatibility. With low human repellency, it is widely used in medical fields such as tooth and bone implants, and intravascular stents, and has become an eye-catching biometal material; in construction, due to the unique characteris...

Claims

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Application Information

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Patent Type & Authority Applications(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
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