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Preparation method of bright corrosion-resistant aluminum profile

An aluminum profile and bright technology, which is applied in the field of bright and anti-corrosion aluminum profile preparation, can solve the problems such as the performance of the aluminum alloy profile needs to be improved, and achieve the effects of small loss, expanded application range and smooth surface.

Inactive Publication Date: 2018-06-12
陈卫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN102828073B (2014-1-8) discloses a production method of powder sprayed aluminum alloy profile, but the performance of the aluminum alloy profile still needs to be improved

Method used

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  • Preparation method of bright corrosion-resistant aluminum profile

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Aluminum profile preparation: Melt aluminum ingots into liquid aluminum, add zirconium-wrapped titanium dioxide and zirconium-wrapped silica mixed powders at a mass ratio of 1:2, the mixed powders account for 0.5% of the mass of the aluminum ingots, and then melt at the melting temperature Keep it for 3 hours; then pour it into a mold above 600°C under a pressure of 1.1MPa. After pouring into the mold, cool it to 350°C at a rate of 60-80°C per hour, then keep it warm for 2 hours, and then cool it at a rate of 30°C per hour to Insulate at 80°C for 1 hour; then cool at room temperature and release the aluminum profile.

[0031] Preparation of bright and anti-corrosion aluminum profiles:

[0032] Preparation of bright anticorrosion liquid: prepare 40 parts of sodium fluoride, 60 parts of ammonium bifluoride, 20 parts of potassium permanganate, 50 parts of potassium chromate, 25 parts of zinc phosphate, 18 parts of sodium nitrate, 12 parts of praseodymium chloride, and 16 ...

Embodiment 2

[0038] Aluminum profile preparation: Melt aluminum ingots into liquid aluminum, add zirconium-wrapped titanium dioxide and zirconium-wrapped silica mixed powders at a mass ratio of 1:3, the mixed powders account for 1.2% of the mass of the aluminum ingots, and then melt at the melting temperature Keep it for 5 hours; then pour it into a mold above 600°C under a pressure of 1.5MPa, cool it to 450°C at a rate of 80°C per hour after pouring into the mold, keep it for 3 hours, and then cool it to 100°C at a rate of 40°C per hour Keep warm for 2 hours; then cool at room temperature and demould the aluminum profile.

[0039] Preparation of bright and anti-corrosion aluminum profiles:

[0040] Preparation of bright anticorrosion liquid: prepare 40 parts of sodium fluoride, 60 parts of ammonium bifluoride, 20 parts of potassium permanganate, 40-50 parts of potassium chromate, 25 parts of zinc phosphate, 18 parts of sodium nitrate, and 12 parts of praseodymium chloride by weight , 16 ...

Embodiment 3

[0046] Aluminum profile preparation: Melt aluminum ingots into liquid aluminum, add zirconium-wrapped titanium dioxide and zirconium-wrapped silica mixed powders at a mass ratio of 1:2-3, the mixed powders account for 0.9% of the mass of the aluminum ingots, and then melt Keep at the temperature for 4 hours; then pour it into a mold above 600°C under a pressure of 1.3MPa, pour it into the mold and cool it to 390°C at a rate of 70°C per hour, then keep it for 2.5 hours, and then cool it at a rate of 38°C per hour to Insulate at 90°C for 1.5 hours; then cool at room temperature and release the aluminum profile.

[0047] Preparation of bright and anti-corrosion aluminum profiles:

[0048] Preparation of bright anticorrosion liquid: prepare 26 parts of sodium fluoride, 40 parts of ammonium bifluoride, 18 parts of potassium permanganate, 46 parts of potassium chromate, 19 parts of zinc phosphate, 12 parts of sodium nitrate, 9 parts of praseodymium chloride, and 13 parts of diamine...

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Abstract

The invention relates to improvement of aluminum profiles, in particular to a preparation method of a bright corrosion-resistant aluminum profile. The preparation method sequentially comprises the steps that a bright corrosion-resistant solution is prepared, specifically, the bright corrosion-resistant solution is prepared from, by weight, 20-40 parts of sodium fluoride, 30-60 parts of ammonium bifluoride, 10-20 parts of potassium permanganate, 40-50 parts of potassium chromate, 15-25 parts of zinc phosphate, 8-18 parts of sodium nitrate, 5-12 parts of praseodymium chloride, 10-16 parts of ethylenediaminetetraacetic acid, 7-14 parts of malic acid, 8-12 parts of sodium dodecyl benzene sulfate, 6-13 parts of nickel sulfate, 15-25 parts of triethanolamine and 500-900 parts of water, the pH value is controlled to be 3-4, and the bright corrosion-resistant solution is obtained; the bright corrosion-resistant solution is heated to 30-40 DEG C, and then the aluminum profile is dipped in the bright corrosion-resistant solution for 2-4 min; then under the temperature of 80-95 DEG C, hot air circular drying is conducted for 40-50 min; second-time dipping is conducted under the microwave vacuum condition, and then the aluminum profile is subjected to microwave treatment in a bright corrosion-resistant agent after first-time dipping treatment for 3-7s; and washing is conducted through flowing water till the pH value of eluate is neutral, and then drying is conducted under 40-48 DEG C. The aluminum profile prepared by the preparation method is bright, soft, superior in corrosion resistance, safe and environmentally friendly.

Description

technical field [0001] The invention relates to the modification of aluminum profiles, in particular to a method for preparing bright and anti-corrosion aluminum profiles. Background technique [0002] Aluminum alloy profiles for construction require high comprehensive performance such as corrosion resistance, weather resistance, wear resistance, good appearance decoration and long service life. Therefore, aluminum profiles are protected by electrostatic powder spraying and fluorocarbon resin paint coating. Before decoration, surface chemical conversion treatment is necessary to improve the bonding force between the coating and the substrate and meet the high corrosion resistance requirements. [0003] CN102828073B (2014-1-8) discloses a production method of a powder-coated aluminum alloy profile, but the performance of the aluminum alloy profile still needs to be improved. Contents of the invention [0004] The purpose of the present invention is to provide a bright and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F3/03C23F11/18
CPCC23F3/03C23F11/188
Inventor 陈伟
Owner 陈卫
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