Aluminum profile rapid and efficient sanding process

Abstract

The invention relates to an aluminum profile surface treatment production process, in particular to an aluminum profile rapid and efficient sanding process. The aluminum profile rapid and efficient sanding process has the following beneficial effects of carrying out pretreatment on the aluminum profile by adopting an alkaline etching agent taking Na2Co3 as a main component; and widening oxidationtemperature range by adopting a sulfuric acid electrolyte added with organic acid to speed up the oxidation speed. The surface pretreatment process of the aluminum profile is reduced while the sand surface treatment effect of the aluminum profile is not reduced, and the aluminum consumption is reduced.

Description

technical field

[0001] The invention relates to a production process for surface treatment of aluminum profiles, in particular to a fast and efficient sanding process for aluminum profiles. Background technique

[0002] Aluminum profiles are prone to corrosion when they are in use. In order to improve the corrosion resistance of the aluminum profile surface, it is necessary to carry out surface treatment on the aluminum profile. Most of the existing aluminum profiles use acid etching for surface pretreatment to eliminate defects such as metallic luster and surface lines. However, the hydrogen fluoride in the etchant is relatively harmful to the environment. The old-fashioned alkali etching treatment method has high aluminum consumption and a lot of alkali slag. The Chinese invention patent with the application number 20131496880.1 proposes a sandblasting process for aluminum profiles. Before pretreatment, the aluminum profiles are sandblasted, and the glass sand is driven...

Examples

Embodiment Construction

[0018] Embodiments of the present invention will be described in detail below. A fast and efficient grinding process for aluminum profiles, characterized in that it comprises the following steps:

[0019] Step 1: Alkaline etching treatment of aluminum profiles, using alkaline etchant to react with aluminum profiles to remove surface grease, dirt and natural oxide film. The composition of alkali etching agent is Na 2 CO 3 90 / L, NaOH 9g / L, NaOH 2 SO 4 28g / L, Na 3 PO 4 20g / L, sodium dodecyl sulfate 0.8g / L, glycerol 8g / L. The pretreatment temperature is 58°C, and the pretreatment time is 12 minutes.

[0020] Step 2: neutralize the aluminum profile; use an acid neutralizer to remove the lye remaining on the surface of the aluminum profile that has undergone alkali etching treatment;

[0021] Step 3: aluminum profile oxidation treatment; the aluminum profile is used as an anode and placed in a sulfuric acid electrolyte containing additives for electrolytic oxidation, and ...

technical field

[0001] The invention relates to a production process for surface treatment of aluminum profiles, in particular to a fast and efficient sanding process for aluminum profiles. Background technique

[0002] Aluminum profiles are prone to corrosion when they are in use. In order to improve the corrosion resistance of the aluminum profile surface, it is necessary to carry out surface treatment on the aluminum profile. Most of the existing aluminum profiles use acid etching for surface pretreatment to eliminate defects such as metallic luster and surface lines. However, the hydrogen fluoride in the etchant is relatively harmful to the environment. The old-fashioned alkali etching treatment method has high aluminum consumption and a lot of alkali slag. The Chinese invention patent with the application number 20131496880.1 proposes a sandblasting process for aluminum profiles. Before pretreatment, the aluminum profiles are sandblasted, and the glass sand is driven...

Examples

Embodiment Construction

[0018] Embodiments of the present invention will be described in detail below. A fast and efficient grinding process for aluminum profiles, characterized in that it comprises the following steps:

[0019] Step 1: Alkaline etching treatment of aluminum profiles, using alkaline etchant to react with aluminum profiles to remove surface grease, dirt and natural oxide film. The composition of alkali etching agent is Na 2 CO 3 90 / L, NaOH 9g / L, NaOH 2 SO 4 28g / L, Na 3 PO 4 20g / L, sodium dodecyl sulfate 0.8g / L, glycerol 8g / L. The pretreatment temperature is 58°C, and the pretreatment time is 12 minutes.

[0020] Step 2: neutralize the aluminum profile; use an acid neutralizer to remove the lye remaining on the surface of the aluminum profile that has undergone alkali etching treatment;

[0021] Step 3: aluminum profile oxidation treatment; the aluminum profile is used as an anode and placed in a sulfuric acid electrolyte containing additives for electrolytic oxidation, and ...