Fluotitanate conversion fluid applied to surface of 6061 aluminum alloy and use method of fluotitanate conversion fluid

An aluminum alloy surface, fluorotitanate technology, applied in the direction of metal material coating process, etc., can solve the problems of uneven chemical composition and structure, affecting the service life of materials, micro-battery corrosion, etc. Low, strong adhesion effect

Inactive Publication Date: 2015-09-09
XINXIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The presence of these elements makes the internal chemical composition and structure of the aluminum alloy uneven, making the aluminum alloy material in the use environment (especially Cl - Under the condition of existence), it is very easy to cause corrosion of the micro-battery, which affects the service life of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A fluorotitanate conversion solution applied to the surface of 6061 aluminum alloy, the formula of the conversion solution is to contain the following weights of raw materials per liter of solution: 3g of sodium fluoride, 4g of ammonium fluorosilicate, 1.0g of sodium hexametaphosphate, 1.5 g of titanium salt, 1.5 mg of hydrogen peroxide, and water as the balance; the titanium salt is tetra-n-butyl titanate. The pH value of the conversion liquid is 4.5, and the pH value of the conversion liquid is adjusted by a non-reducing acid, and the non-reducing acid is sulfuric acid.

[0030] A method for using a fluorotitanate conversion solution applied to the surface of a 6061 aluminum alloy, comprising the steps of:

[0031] Step 1: After heating Turco 4215 NC-LT alkaline cleaning agent to 65°C, place 6061 aluminum alloy in Turco 4215 NC-LT alkaline cleaning agent for cleaning, and the cleaning time is 5 minutes;

[0032] Step 2: Place the cleaned 6061 aluminum alloy described...

Embodiment 2

[0039] A fluorotitanate conversion solution applied to the surface of 6061 aluminum alloy, the formula of the conversion solution is to contain the following weights of raw materials per liter of solution: 3g of sodium fluoride, 4g of ammonium fluorosilicate, 1.0g of sodium hexametaphosphate, 1.5 g of titanium salt, 1.5 mg of hydrogen peroxide, and water as the balance; the titanium salt is titanium sulfate. The conversion liquid has a pH value of 5, and the pH value of the conversion liquid is adjusted by a non-reducing acid, and the non-reducing acid is nitric acid.

[0040] A method for using a fluorotitanate conversion solution applied to the surface of a 6061 aluminum alloy, comprising the steps of:

[0041]Step 1: After heating Turco 4215 NC-LT alkaline cleaning agent to 70°C, place 6061 aluminum alloy in Turco 4215 NC-LT alkaline cleaning agent for cleaning, and the cleaning time is 7 minutes;

[0042] Step 2: Place the cleaned 6061 aluminum alloy in step 1 in clean wa...

Embodiment 3

[0049] A fluorotitanate conversion solution applied to the surface of 6061 aluminum alloy, the formula of the conversion solution is to contain the following weights of raw materials per liter of solution: 3g of sodium fluoride, 4g of ammonium fluorosilicate, 1.0g of sodium hexametaphosphate, 1.5 g of titanium salt, 1.5 mg of hydrogen peroxide, and water as the balance; the titanium salt is titanyl sulfate. The pH value of the conversion liquid is 5.5, and the pH value of the conversion liquid is adjusted by a non-reducing acid, and the non-reducing acid is sulfuric acid.

[0050] A method for using a fluorotitanate conversion solution applied to the surface of a 6061 aluminum alloy, comprising the steps of:

[0051] Step 1: After heating Turco 4215 NC-LT alkaline cleaning agent to 67.5°C, place 6061 aluminum alloy in Turco 4215 NC-LT alkaline cleaning agent for cleaning, and the cleaning time is 6 minutes;

[0052] Step 2: Place the cleaned 6061 aluminum alloy in step 1 in c...

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PUM

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Abstract

The invention belongs to the technical field of metal material surface treatment technology, and particularly relates to a fluotitanate conversion fluid applied to the surface of a 6061 aluminum alloy and a use method of the fluotitanate conversion fluid. Each liter of the conversion fluid comprises raw material by weight as follows: 3 g of sodium fluoride, 4 g of ammonium fluorosilicate, 1.0 g of sodium hexametaphosphate, 1.5 g of titanium salt, 1.5 mg of hydrogen peroxide and the balance of water, wherein titanium salt is one of tetra-n-butyl titanate, titanium sulfate, titanyl sulfate and titanium chloride. Etched aluminum ions on the surface of the 6061 aluminum alloy participate in generation of a fluotitanate conversion coating at the normal temperature, so that particles on the coating are fine and compact, and the conversion coating is firmly combined with an aluminum alloy substrate and has characteristics of good corrosion resistance and high adhesive force when attached to an organic coating, and has the advantages of energy conservation, time saving, high production efficiency, low cost, simple process and stable performance.

Description

technical field [0001] The invention belongs to the technical field of metal material surface treatment, and in particular relates to a fluorotitanate conversion solution applied to the surface of 6061 aluminum alloy and a use method. Background technique [0002] In the manufacturing process of aluminum alloy, various alloying elements, such as Zn, Mg, Cu, Si, etc., are added due to the pursuit of high mechanical properties and comprehensive properties. The presence of these elements makes the internal chemical composition and structure of the aluminum alloy uneven, making the aluminum alloy material in the use environment (especially Cl - Under the conditions of existence), it is very easy to cause corrosion of the micro-battery and affect the service life of the material. Therefore, the protection of aluminum and its alloys has attracted more and more attention. Chromate passivation treatment has been widely used in the surface treatment of aluminum alloys. However, due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/36C23C22/78
Inventor 李红玲孙爱丽刘双枝杨玉萍徐绍红
Owner XINXIANG UNIV
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