Method for modifying aluminium profile for buildings

A technology for aluminum profiles and construction, which is applied in the direction of metal material coating technology, etc., can solve the problems such as the performance of aluminum alloy profiles that needs to be improved, and achieve the effects of small loss, improved performance, and good performance

Inactive Publication Date: 2014-05-28
MERLAN INT GRP H K
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for modifying aluminium profile for buildings

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Effect test

Embodiment 1

[0034] 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.

[0035] Preparation of bright and anti-corrosion aluminum profiles:

[0036] Modifier preparation: 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 parts of diaminetetraa...

Embodiment 2

[0042] 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 ingot, 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.

[0043] Preparation of bright and anti-corrosion aluminum profiles:

[0044] Modifier preparation: 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 parts of ethylenediamin...

Embodiment 3

[0050] 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.

[0051] Preparation of bright and anti-corrosion aluminum profiles:

[0052] Modifier preparation: 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 diaminetetraacetic acid, 9 pa...

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Abstract

The invention relates to modification of aluminium profiles and in particular relates to a method for modifying an aluminium profile for buildings. The method comprises the steps of smelting aluminium ingots into molten aluminium, adding mixed powder of zirconium-coated titanium dioxide and zirconium-coated silicon dioxide, maintaining the materials at a melting temperature for 3-5 hours, pouring the materials into a mold with a temperature above 600 DEG C under the pressure of 1.1-1.5MPa, and cooling and insulating so as to obtain the aluminium profile through demolding; preparing a modifying agent from 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 ethylenediamine tetraacetic 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, 5-10 parts of reducing agents containing alkali metals, 7-13 parts of chlorinated polypropylene or polyolefin substrate adhesion promoter and 500-900 parts of water by weight, and controlling the pH value to be 3-4, thus obtaining the modifying agent; dipping and drying twice to obtain a modified aluminium profile. The prepared aluminium profile is bright and soft, has excellent corrosion resistance and is safe and environment-friendly.

Description

technical field [0001] The invention relates to the modification of aluminum profiles, in particular to a method for modifying aluminum profiles for construction. 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 method for modifying...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/38C23C22/73
Inventor 徐伟
Owner MERLAN INT GRP H K
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