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Surface treatment method of aluminum product

A surface treatment and aluminum product technology, applied in the field of aluminum product processing, can solve the problems that the non-stick performance of the oxide film is not particularly good, the color will change after a long time of use, and the wear resistance is not good enough, so as to achieve dense organization and improved non-stick performance. , the effect of beautiful surface

Inactive Publication Date: 2013-06-26
汤锦练
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aluminum metal has been widely used because of its good wear resistance and corrosion resistance. When it is used in the field of tableware, it is easy to stick food to the surface of aluminum products in the process of frying. In order to prevent food from sticking to the surface of aluminum products Generally, the surface of aluminum products is treated, such as sanding, polishing, whitewashing, spraying high-temperature paint, spraying non-stick coating, coloring and other processes. However, these processes have the following disadvantages: there will be aluminum in the process of use Dissolution of molecules, discoloration, powdering, delamination and other shedding phenomena after long-term use, and it is also easy to scratch, and will produce harmful substances after high temperature, and the wear resistance is relatively poor
Some people have studied anodic oxidation treatment on the surface of aluminum products, but the non-stick performance of the formed oxide film is not particularly good, and the wear resistance is not good enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Surface treatment of aluminum pot: Polish the surface of the aluminum pot, first deoil the polished aluminum pot with an alkaline solution, then wash it once with clean water, and then use an acidic solution for secondary degreasing, and then clean Once, the residual acidic solution and alkaline solution were neutralized, then washed three times with clean water, and then the degreasing aluminum products were put into the sulfuric acid electrolyte with a temperature of 4 degrees Celsius and a density of 5%. In the electrolyte, aluminum metal is inserted as the cathode, the aluminum product itself is used as the anode, the surface area ratio of the cathode and the anode of the electrode is 1:1, and the current with a density of 2.8A / dm is fed for 60 minutes. An aluminum oxide film with a thickness of 45um is formed on the surface. The aluminum oxide film has a hardness of 400-600HV when it is formed on the surface of aluminum alloy, and a hardness of more than 2000HV w...

Embodiment 2

[0024] Surface treatment of the aluminum dining basin: grinding the surface of the aluminum dining basin, first degreasing the polished aluminum pan with an alkaline solution, then cleaning it once with clean water, and then degreasing it with an acidic solution for a second time. Wash once again, neutralize the residual acidic solution and alkaline solution, then wash with clean water three times, and then put the degreasing aluminum product into a sulfuric acid electrolyte with a temperature of 3 degrees Celsius and a density of 5%, An electrode is inserted into the electrolyte, the surface area ratio of the cathode and the anode of the electrode is 1:1, and a current with a density of 3.0A / dm2 is passed in for 80 minutes to generate an oxide with a thickness of 35um on the surface of the aluminum product. When the oxide film is formed on the surface of the aluminum alloy, the hardness reaches 400-600HV, and when the oxide film is formed on the surface of the ultra-pure al...

Embodiment 3

[0026] Surface treatment of aluminum dinner plate: Polish the surface of the aluminum dinner plate, degr Wash once, neutralize the residual acidic solution and alkaline solution, and then wash with clean water three times, and then put the degreasing aluminum product into a sulfuric acid electrolyte with a temperature of 3 degrees Celsius and a density of 5%, and in An electrode is inserted into the electrolyte, the surface area ratio of the cathode and the anode of the electrode is 1:1, and a current with a density of 2.0A / dm2 is passed in for 45 minutes to generate an oxide film with a thickness of 30um on the surface of the aluminum product , the hardness of the oxide film is 400-600HV when formed on the surface of aluminum alloy, and the hardness is as high as 2000HV or more when formed on the surface of ultra-pure aluminum. At this time, the hardness of the aluminum product is higher and the wear resistance is better than the prior art, A certain non-stick effect is als...

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Abstract

The invention relates to the filed of process of aluminum products, and provides a surface treatment method of the aluminum product which is greater in non-stick surface performance as well as abrasive resistance. The specific technology comprises the following step of: sequentially treating the surface of the aluminum product by grinding, surface degreasing, anodizing and film coating and surface polishing. According to the surface treatment method of the aluminum product, the surface of the aluminum product is treated by anodizing, so that a layer of alumina films is coated on the surface of the aluminum product, and as a result, the wear resistance and corrosion resistance of the aluminum product are improved, the high temperature up to 450 DEG C can be resisted, and the heat absorptivity is higher; the surface of an oxide film is polished, therefore, the non-stick effect of the surface of the aluminum product is improved, and the problem that the surface of the aluminum product, in particular the surface of an aluminum table ware, is easily sticked is solved; and the polished surface of the aluminum is nicer.

Description

technical field [0001] The invention relates to the field of aluminum product processing, in particular to a surface treatment method for aluminum products. Background technique [0002] Aluminum metal is widely used because of its good wear resistance and corrosion resistance. When it is used in the field of tableware, it is easy to stick food on the surface of aluminum products during frying and other processes. In order to prevent food from sticking to the surface of aluminum products. Surface, the surface of aluminum products is generally treated. Commonly used are sanding, polishing, whitening, spraying high temperature paint, spraying non-stick coating, coloring and other processes. However, these processes have the following disadvantages: there will be aluminum during use. The dissolution of molecules, discoloration, powdering, delamination and other shedding phenomena after a long time of use, it is also easy to scratch, and after high temperature, it will produce s...

Claims

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Application Information

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IPC IPC(8): C25D11/04C25D11/18
Inventor 汤锦练
Owner 汤锦练
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