Aluminum veneer processing process

A processing technology, aluminum veneer technology, applied in the direction of metal material coating technology, etc., can solve the problems of environmental protection and human health, difficult to effectively control the oxidation process, poor corrosion resistance and other problems, to achieve high passivation. Film efficiency, good film formation effect, excellent corrosion resistance effect

Inactive Publication Date: 2019-03-08
成都四吉达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

However, chromium treatment should use soluble hexavalent chromate, hexavalent chromium is extremely harmful to the human body, no matter in the process of chromization treatment of aluminum plate or in the process of using the aluminum plate after chromation treatment, hexavalent chromium will enter environment and cause pollution, causing serious environmental problems
The corrosion resistance of the trivalent chromate passivation film that replaces hexavalent chromium is relatively poor, and the trivalent chromate exposed to the air will be oxidized to hexavalent chromium under certain conditions, and then pollute the environment , and the oxidation process of trivalent chromium to hexavalent chromium is difficult to effectively control, and the waste liquid of trivalent chromate passivation also contains hexavalent chromium
Therefore, chromizing the aluminum veneer is not conducive to environmental protection and human health.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0032] Add 1kg of sodium hydroxide, 0.6kg of sodium carbonate, 0.06kg of sodium silicate and 0.02kg of sodium fluoride into 10L of water in sequence, keep stirring to completely dissolve the added ingredients, then add 5g of sodium citrate and 0.04kg of ammonium molybdate and 0.06kg of thiourea are obtained after stirring evenly. The various reagents used in this preparation are common commercially available chemical reagents.

preparation example 2

[0034] Add 1.2kg of sodium hydroxide, 0.75kg of sodium carbonate, 0.1kg of sodium silicate and 0.03kg of sodium fluoride into 10L of water in sequence, keep stirring to completely dissolve the added ingredients, and then add 30g of sodium citrate And 0.07kg of ammonium molybdate and 0.08kg of zinc sulfate, after stirring evenly. The various reagents used in this preparation are common commercially available chemical reagents.

preparation example 3

[0036] Add 1.1kg of sodium hydroxide, 0.68kg of sodium carbonate, 0.08kg of sodium silicate and 0.025kg of sodium fluoride into 10L of water in sequence, keep stirring to completely dissolve the added ingredients, and then add 15g of sodium citrate And 0.13kg of thiourea, after stirring evenly. The various reagents used in this preparation are common commercially available chemical reagents.

[0037] Preparation example of chromium-free passivation solution

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PUM

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Abstract

The invention relates to an aluminum veneer processing process and belongs to the technical field of aluminum veneer building decoration materials. The aluminum veneer processing process comprises thesteps that sheet metal processing is conducted, and an aluminum veneer is prewashed in the sheet metal processing process; and the aluminum veneer after sheet metal processing is sequentially subjected to acid pickling, passivation and spraying, wherein alkaline washing liquid is adopted during pre-washing and chromate-free passivation liquid is adopted during passivation. The process has the effects that the process is simple, environmentally friendly and safe, and the aluminum veneer obtained by processing is stable in quality and good in chemical corrosion resistance and weather resistance.

Description

technical field [0001] The invention relates to the technical field of aluminum veneer building decoration materials, more specifically, it relates to a processing technology of aluminum veneer. Background technique [0002] With the rapid development of the modern economy, people have put forward higher and higher requirements for the comprehensive performance of architectural decoration such as beauty and practicality. Most of the traditional architectural decoration materials are stone and gypsum board. Due to the heavy weight, complex installation and processing technology and simple shape of these decorative materials, the construction cost increases and it is difficult to fully express the design intention of the architectural designer. At present, building decoration materials such as glass, artificial stone, and aluminum veneer have gradually replaced stone and gypsum board. Among them, aluminum veneer is widely used in the field of architectural decoration because o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/22C23G1/12C23G1/16C23G1/24C23C22/34
CPCC23C22/34C23G1/125C23G1/16C23G1/22C23G1/24
Inventor 黄坤
Owner 成都四吉达新材料科技有限公司
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