Cleaning method for preventing surface gloss of rolled mirror surface aluminum from being reduced

Abstract

A cleaning method for preventing the surface gloss of rolled mirror surface aluminum from being reduced includes the steps that firstly, a rinsing solution is used for rinsing the rolled mirror surface aluminum, then high-pressure water cleaning is conducted after first-time wringing, second-time wringing is conducted after cleaning, then low-pressure water cleaning is conducted, third-time wringing is conducted after cleaning, then the rolled mirror surface aluminum is dried, cooled and finally coated and rolled, the rinsing solution used in the rinsing process is weakly acidic, the acid value of the rinsing solution is 15-25 mol / L, and the concentration of hydrogen ions in the rinsing solution is 0.12-0.15 mmol / L; and during high-pressure water cleaning and low-pressure water cleaning, the water temperature is 70-95 DEG C, during drying, the drying temperature is 65-80 DEG C, and the time for the rolled mirror surface aluminum to pass through a drying box is 6-13 s. According to themethod, the surface gloss of the rolled mirror surface aluminum can be well kept, the attenuation degree is controlled within 5 GU, the surface gloss of the rolled mirror surface aluminum product is kept, and the special requirements of downstream customers are met.

Description

technical field

[0001] The invention belongs to the field of aluminum and aluminum alloy nonferrous metal materials, and in particular relates to a cleaning method for preventing the glossiness of the rolled mirror aluminum surface from decreasing. Background technique

[0002] In recent years, under the increasingly severe environmental protection problems at home and abroad, non-polluting, high-efficiency rolled mirror aluminum products have developed rapidly, and have shown a continuous improvement trend, further accelerating the traditional mirror aluminum processing way of transformation and upgrading. The surface of the rolled mirror aluminum aluminum material has high gloss and high brightness characteristics. Its production method has no pollution to the environment, high production efficiency, and low defective product rate. It belongs to the sunrise industry and has broad market prospects.

[0003] Since decorative products such as indoor and outdoor buildings hav...

Examples

Embodiment 1

[0023] Example 1: Select a rolled 1070 aluminum alloy mirror surface aluminum material with a surface gloss of 819GU for cleaning. The specific steps and process parameters are as follows:

[0024] (1) Use a mixed acid solution with hydrofluoric acid and sulfuric acid as the main components, and mix it with demineralized water. The acid value during mixing is controlled according to 15mmol / 100ml, and the concentration of hydrogen ions in the solution is controlled according to 0.12mmol / 100ml. Control, prepare a weakly acidic rinsing solution, use the prepared rinsing solution to rinse the rolled 1070 aluminum alloy mirror surface aluminum to remove residual oil and aluminum powder on the surface of the aluminum, and perform the first squeeze after rinsing;

[0025] (2) Use high-pressure water with a pressure value of 3Mpa to perform high-pressure cleaning on the rolled 1070 aluminum alloy mirror surface aluminum material after the previous step, and the temperature of the high-...

Embodiment 2

[0031] Example 2: Select the rolled 1070 aluminum alloy mirror surface aluminum material with a surface gloss of 820GU for cleaning. The specific steps are roughly the same as in Example 1. The difference is the control of the process parameters. Only the different process parameters are listed below. .

[0032] (1) When preparing the rinse solution, the acid value is controlled at 25mol / L, and the hydrogen ion concentration in the solution is controlled at 0.15mmol / L;

[0033] (2) The water temperature during high-pressure cleaning is 93°C, and the water temperature during low-pressure cleaning is 93°C;

[0034] (3) During drying, the drying temperature in the drying box is 78°C, and the time for the aluminum material to pass through the drying box is 12.5s.

[0035] After the cleaning is completed according to the above method, the glossiness of the cleaned aluminum is tested. The measured result is 815GU, and the attenuation is 5GU. Gloss requirements.

Embodiment 3

[0036] Example 3: Select the rolled 1070 aluminum alloy mirror surface aluminum material with a surface gloss of 822GU for cleaning. The specific steps are roughly the same as in Example 1. The difference is the control of the process parameters. The following only lists the different process parameters. .

[0037] (1) When preparing the rinse solution, the acid value is controlled at 20mmol / 100ml, and the hydrogen ion concentration in the solution is controlled at 0.137mmol / 100ml;

[0038] (2) The water temperature during high-pressure cleaning is 76°C, and the water temperature during low-pressure cleaning is 79°C;

[0039] (3) When drying, the drying temperature in the drying box is 72°C, and the time for the aluminum material to pass through the drying box is 9s.

[0040]After the cleaning is completed according to the above method, the glossiness of the cleaned aluminum is tested. The test result is 820GU, and the attenuation is 2GU. Gloss requirements.

technical field

[0001] The invention belongs to the field of aluminum and aluminum alloy nonferrous metal materials, and in particular relates to a cleaning method for preventing the glossiness of the rolled mirror aluminum surface from decreasing. Background technique

[0002] In recent years, under the increasingly severe environmental protection problems at home and abroad, non-polluting, high-efficiency rolled mirror aluminum products have developed rapidly, and have shown a continuous improvement trend, further accelerating the traditional mirror aluminum processing way of transformation and upgrading. The surface of the rolled mirror aluminum aluminum material has high gloss and high brightness characteristics. Its production method has no pollution to the environment, high production efficiency, and low defective product rate. It belongs to the sunrise industry and has broad market prospects.

[0003] Since decorative products such as indoor and outdoor buildings hav...

Examples

Embodiment 1

[0023] Example 1: Select a rolled 1070 aluminum alloy mirror surface aluminum material with a surface gloss of 819GU for cleaning. The specific steps and process parameters are as follows:

[0024] (1) Use a mixed acid solution with hydrofluoric acid and sulfuric acid as the main components, and mix it with demineralized water. The acid value during mixing is controlled according to 15mmol / 100ml, and the concentration of hydrogen ions in the solution is controlled according to 0.12mmol / 100ml. Control, prepare a weakly acidic rinsing solution, use the prepared rinsing solution to rinse the rolled 1070 aluminum alloy mirror surface aluminum to remove residual oil and aluminum powder on the surface of the aluminum, and perform the first squeeze after rinsing;

[0025] (2) Use high-pressure water with a pressure value of 3Mpa to perform high-pressure cleaning on the rolled 1070 aluminum alloy mirror surface aluminum material after the previous step, and the temperature of the high-...

Embodiment 2

[0031] Example 2: Select the rolled 1070 aluminum alloy mirror surface aluminum material with a surface gloss of 820GU for cleaning. The specific steps are roughly the same as in Example 1. The difference is the control of the process parameters. Only the different process parameters are listed below. .

[0032] (1) When preparing the rinse solution, the acid value is controlled at 25mol / L, and the hydrogen ion concentration in the solution is controlled at 0.15mmol / L;

[0033] (2) The water temperature during high-pressure cleaning is 93°C, and the water temperature during low-pressure cleaning is 93°C;

[0034] (3) During drying, the drying temperature in the drying box is 78°C, and the time for the aluminum material to pass through the drying box is 12.5s.

[0035] After the cleaning is completed according to the above method, the glossiness of the cleaned aluminum is tested. The measured result is 815GU, and the attenuation is 5GU. Gloss requirements.

Embodiment 3

[0036] Example 3: Select the rolled 1070 aluminum alloy mirror surface aluminum material with a surface gloss of 822GU for cleaning. The specific steps are roughly the same as in Example 1. The difference is the control of the process parameters. The following only lists the different process parameters. .

[0037] (1) When preparing the rinse solution, the acid value is controlled at 20mmol / 100ml, and the hydrogen ion concentration in the solution is controlled at 0.137mmol / 100ml;

[0038] (2) The water temperature during high-pressure cleaning is 76°C, and the water temperature during low-pressure cleaning is 79°C;

[0039] (3) When drying, the drying temperature in the drying box is 72°C, and the time for the aluminum material to pass through the drying box is 9s.

[0040]After the cleaning is completed according to the above method, the glossiness of the cleaned aluminum is tested. The test result is 820GU, and the attenuation is 2GU. Gloss requirements.

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