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Honeycomb hole surface treatment technology before spraying aluminum cooking utensils

A technology of surface treatment and honeycomb holes, which is applied in the field of surface treatment to form honeycomb holes on the surface of aluminum cookware to increase the effect of spray coating adhesion, and can solve the problems of increasing the bonding force of the surface layer, poor bonding force of the surface layer, and inability to form a microporous structure, etc. , to achieve the effect of increasing the binding force

Active Publication Date: 2012-07-18
JIANGMEN ANNUOTE COOKING UTENSILS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is necessary to form a certain surface layer on the surface of aluminum cookware, it is generally necessary to roughen the aluminum surface to increase the bonding force between the surface layer and the aluminum layer. The existing commonly used techniques include mechanical sandblasting and chemical surface corrosion. The roughened surface formed by mechanical sandblasting has a large pore size, and the microscopic surface of the pores is relatively smooth, so the bonding force with the surface layer is relatively poor
The chemical surface corrosion method is to use the uneven distribution of electrochemical potential on the aluminum surface to corrode with acid or alkali solution, thereby forming a large number of corrosion micropores on the aluminum surface, thereby increasing the bonding force of the surface layer, but the micropore structure of this method is simple , generally only one corrosion hole can be formed, and a more complex microporous structure cannot be formed.

Method used

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  • Honeycomb hole surface treatment technology before spraying aluminum cooking utensils
  • Honeycomb hole surface treatment technology before spraying aluminum cooking utensils
  • Honeycomb hole surface treatment technology before spraying aluminum cooking utensils

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A. Surface cleaning of aluminum cookware;

[0028] B. pre-corrosion treatment, the aluminum cooker is immersed in a temperature and a volume ratio of 5% HCl solution for pre-corrosion, the pre-corrosion time is 10 minutes, and a corrosion is formed on the surface of the aluminum cooker to form holes;

[0029] C. Positive ion anti-corrosion point treatment, immerse the pre-corroded aluminum cookware in 200mg / L FeCl 3 In the solution, the temperature is 30°C, and the treatment time is 5 minutes. Iron ions and aluminum produce a substitution reaction to form uniform iron-covered anti-corrosion spots on the surface of aluminum cookware;

[0030] D. Secondary corrosion treatment, the aluminum cooker is immersed in the alkaline corrosion solution of normal temperature, and described corrosion solution is by the NaOH solution of 10g / L and the NaNO of 20g / L 3 The solution is mixed, and the secondary corrosion treatment time is 8 minutes;

[0031] E. Deashing treatment, immers...

Embodiment 2

[0034] A. Surface cleaning of aluminum cookware;

[0035] B. pre-corrosion treatment, the aluminum cooker is immersed in a temperature and a volume ratio of 10% HCl solution for pre-etching, the pre-corrosion time is 7 minutes, and a corrosion is formed on the surface of the aluminum cooker to form holes;

[0036] C. Positive ion anti-corrosion point treatment, immerse the pre-corroded aluminum cookware in 500mg / L CuCL2 solution, the temperature is 50°C, and the treatment time is 10 minutes. Uniform copper-covered corrosion spots;

[0037] D. Secondary corrosion treatment, the aluminum cooker is immersed in the alkaline corrosion solution of normal temperature, and described corrosion solution is by the NaOH solution of 50g / L and the NaOH solution of 30g / L 2 CrO 4 The solution is mixed, and the secondary corrosion treatment time is 5 minutes;

[0038] E. Ash removal treatment, immerse the secondary corroded aluminum cooker in H2 with a volume ratio of 30% and a temperature of...

Embodiment 3

[0041] A. Surface cleaning of aluminum cookware;

[0042] B. pre-corrosion treatment, the aluminum cooker is immersed in temperature, and the volume ratio is 15% HCl solution to carry out pre-corrosion, the pre-etch time is 3 minutes, and a corrosion is formed on the surface of the aluminum cooker to form holes;

[0043] C. Positive ion anti-corrosion point treatment, immerse the pre-corroded aluminum cookware in 800mg / L CaCl 2 In the solution, the temperature is 20°C, and the treatment time is 3 minutes. Calcium ions and aluminum undergo substitution reactions to form uniform iron-covered anti-corrosion spots on the surface of aluminum cookware;

[0044] D. Secondary corrosion treatment, the aluminum cooker is immersed in the alkaline corrosion solution of normal temperature, and described corrosion solution is by the NaOH solution of 80g / L and the NaOH solution of 30g / L 2 CrO 4 The solution is mixed, and the secondary corrosion treatment time is 1 minute;

[0045] E. Ash ...

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Abstract

The invention discloses a honeycomb hole surface treatment technology before spraying aluminum cooking utensils. A primary corrosion molding hole is molded on the surface through pre-corrosion treatment; positive ion anti-corrosion point treatment is carried out; anti-corrosion points covered by molded positive potential metals are uniformly distributed on the aluminum surface without being corroded and also distributed in a hole of the primary corrosion molding hole at the same time; the part covered with the positive potential metal anti-corrosion points are not corroded during secondary corrosion treatment, therefore, the secondary corrosion treatment has the following three corrosion ways of: 1, molding a new corrosion micropore on the aluminum surface without being corroded; 2, further carrying out corrosion and chambering to the primary corrosion molding hole; and 3, further molding a large quantity of secondary corrosion molding holes which extend inwards in the primary corrosion molding hole, wherein the secondary corrosion molding holes enable the structure of the micropores on the surface of the aluminum cooking utensil to be more complicated, and meanwhile the large specific surface is formed, thereby being beneficial to increasing the bonding force of the secondary corrosion molding holes and a surface layer.

Description

technical field [0001] The invention relates to a surface treatment method for aluminum cookware, in particular to a surface treatment method for forming honeycomb holes on the surface of the aluminum cookware to increase the adhesion effect of spraying. Background technique [0002] Aluminum has the advantages of light weight, fast heat conduction, and uniform heat conduction, and is widely used to make aluminum cookware. Existing aluminum cookware needs to undergo surface treatment processes after molding, such as surface hardening, spraying, electroplating, etc., and appropriate surface treatment processes can increase the durability, non-stickiness and aesthetics of aluminum cookware according to needs. If it is necessary to form a certain surface layer on the surface of aluminum cookware, it is generally necessary to roughen the aluminum surface to increase the bonding force between the surface layer and the aluminum layer. The existing commonly used techniques include ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F1/02C23F1/36
Inventor 刘心学雷瑞强唐家祥
Owner JIANGMEN ANNUOTE COOKING UTENSILS MFG