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Motorcycle aluminum alloy surface passivating solution

A technology of aluminum alloy surface and passivation solution, which is applied in the coating process of metal materials, etc., can solve environmental pollution and other problems, and achieve the effect of white and bright color, low production and use costs

Inactive Publication Date: 2015-02-04
无锡永发电镀有限公司
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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 propose a passivation solution on the aluminum alloy surface of a motorcycle, the passivation solution replaces hexavalent chromium with trivalent chromium, overcomes the environmental pollution problem caused by hexavalent chromium, and the passivation layer has an ideal Corrosion resistance

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0013] A passivation solution for aluminum alloy surfaces for motorcycles, the passivation solution is composed of: chromium sulfate 21g / L, zirconium nitrate 6g / L, titanium dioxide 2g / L, 70% sulfuric acid 45ml / L, nickel sulfate 5g / L , ammonium sulfate 5g / L, cerium chloride 0.5g / L, lanthanum nitrate 0.5g / L, water-based acrylic resin 8g / L, trisodium citrate 4g / L, and the balance is deionized water.

Embodiment 2

[0015] A passivation solution for aluminum alloy surfaces for motorcycles, the passivation solution is composed of: chromium sulfate 23g / L, zirconium nitrate 4g / L, titanium dioxide 4g / L, 70% sulfuric acid 35ml / L, nickel sulfate 7g / L , ammonium sulfate 3g / L, cerium chloride 1.5g / L, lanthanum nitrate 0.3g / L, water-based acrylic resin 10g / L, trisodium citrate 2g / L, and the balance is deionized water.

Embodiment 3

[0017] A passivation solution for aluminum alloy surfaces for motorcycles, the passivation solution is composed of: chromium sulfate 22g / L, zirconium nitrate 5g / L, titanium dioxide 3g / L, 70% sulfuric acid 40ml / L, nickel sulfate 6g / L , ammonium sulfate 4g / L, cerium chloride 1.0g / L, lanthanum nitrate 0.4g / L, water-based acrylic resin 9g / L, trisodium citrate 3g / L, and the balance is deionized water.

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PUM

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Abstract

The invention discloses a motorcycle aluminum alloy surface passivating solution which comprises the following components: 21-23g / L of chromium sulfate, 4-6g / L of zirconium nitrate, 2-4g / L of titanium dioxide, 35-45ml / L of 70% sulfuric acid, 5-7g / L of nickel sulfate, 3-5g / L of ammonium sulfate, 0.5-1.5g / L of cerium chloride, 0.3-0.5g / L of lanthanum nitrate, 8-10g / L of water-soluble acrylic resin, 2-4 g / L of trisodium citrate and the balance of deionized water.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a passivation solution for the aluminum alloy surface of motorcycles. Background technique [0002] Aluminum alloys are widely used in the motorcycle industry. However, the corrosion resistance of aluminum is weak, and anti-corrosion treatment of its surface is a necessary process. Passivation is one of the most widely used and effective anti-corrosion treatment methods. At present, most domestic enterprises choose the traditional hexavalent chromium passivation process in consideration of technology maturity and cost saving. Although the hexavalent chromium passivation film has good corrosion resistance and beautiful appearance, hexavalent chromium is a highly toxic substance, which is recognized as a carcinogen and a dangerous air pollutant. Hexavalent chromium cannot be degraded in nature, it accumulates in organisms and human body, and can cause long-term harm. ...

Claims

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Application Information

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IPC IPC(8): C23C22/56
CPCC23C22/56C23C2222/10
Inventor 石明
Owner 无锡永发电镀有限公司
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