阅读说明：本技术 一种铝型材的表面处理工艺 (Surface treatment process for aluminum profile ) 是由 潘伟津 于 2020-07-07 设计创作，主要内容包括：本发明公开了一种铝型材的表面处理工艺,包括以下步骤：步骤a：将铝锭通过挤压、时效处理以及CNC加工得到预设规格尺寸的铝型材；步骤b：对铝型材进行喷砂处理；步骤c：对喷砂处理后的铝型材进行阳极氧化处理；步骤d：对阳极氧化处理后的铝型材喷涂UV油。本发明的一种铝型材的表面处理工艺,使得铝合金型材具有优异的耐酸碱性、耐腐蚀性、耐磨性、抗氧化性及电绝缘性等。(The invention discloses a surface treatment process of an aluminum profile, which comprises the following steps: step a: extruding, aging and CNC processing the aluminum ingot to obtain an aluminum profile with a preset specification and size; step b: carrying out sand blasting treatment on the aluminum profile; step c: carrying out anodic oxidation treatment on the aluminum profile subjected to sand blasting treatment; step d: and spraying UV oil on the aluminum profile subjected to the anodic oxidation treatment. The surface treatment process of the aluminum profile enables the aluminum profile to have excellent acid and alkali resistance, corrosion resistance, wear resistance, oxidation resistance, electric insulation and the like.)

1. The surface treatment process of the aluminum profile is characterized by comprising the following steps of:

step a: extruding, aging and CNC processing the aluminum ingot to obtain an aluminum profile with a preset specification and size;

step b: carrying out sand blasting treatment on the aluminum profile;

step c: carrying out anodic oxidation treatment on the aluminum profile subjected to sand blasting treatment;

step d: and spraying UV oil on the aluminum profile subjected to the anodic oxidation treatment.

2. The surface treatment process of the aluminum profile as claimed in claim 1, wherein in the step c, the specific steps of the anodic oxidation treatment are cleaning and drying the aluminum profile, placing the aluminum profile into electrolyte for the anodic oxidation treatment, and generating an oxide layer on the surface of the aluminum profile; placing the aluminum profile into an activating solution for activating treatment to enable the oxidation layer to form concave holes; carrying out anode coloring treatment on the aluminum profile; and (5) hole sealing treatment is carried out on the aluminum profile.

3. The surface treatment process of an aluminum profile as claimed in claim 2, wherein the oxide layer is hardened while electrolytic coloring is performed; the method comprises the following steps: s1, grinding the ceramic into ceramic powder, preparing an electrolytic coloring solution, adding the ceramic powder into the electrolytic coloring solution, and uniformly stirring to prepare a colored turbid solution; and S2, placing the aluminum profile into the colored turbid solution, and adding current for treatment.

4. The surface treatment process of the aluminum profile as claimed in claim 1, wherein in the step b, the pressure in the pressure sand blasting process is 0.5-0.8 MPa, the volume of steel sand in the sand tank is not more than 2/3 of the volume of the sand tank, and the included angle between the nozzle and the surface of the aluminum profile to be sprayed in the pressure sand blasting process is 20-35 degrees.

5. The surface treatment process of the aluminum profile as claimed in claim 1, wherein after the treatment in the step b, acid washing is carried out, and the specific steps are as follows: placing the shot-blasted aluminum profile into a pickling tank for chemical polishing, wherein the pickling solution contains 3-5% of sulfuric acid, 5-10% of hydrochloric acid and 6-12% of nitric acid, and the solvent is deionized water; after acid washing, the aluminum profile is taken out and washed again.

6. The surface treatment process of the aluminum profile as claimed in claim 5, wherein after acid washing, the aluminum profile after washing is passivated, and then washed clean after passivation.

Technical Field

The invention particularly relates to a surface treatment process of an aluminum profile, and belongs to the technical field of aluminum profile processing.

Background

With the rapid development of national economy and high and new technology, the aluminum smelting and aluminum profile processing industry in China develops rapidly, which reaches 879.3 ten thousand tons in 2006 and becomes the first place in the world beyond the United states.

Aluminum is a metal material with extremely active chemical properties, can be naturally oxidized in air, forms an aluminum oxide protective film on the surface of the aluminum material, and blocks oxygen from contacting with internal aluminum metal, but the aluminum oxide is an amphoteric compound, has extremely poor acid and alkali resistance, can be dissolved under the acid and alkali conditions, loses the protection effect, and needs to be subjected to surface treatment to overcome the defects.

Disclosure of Invention

The invention aims to provide a surface treatment process of an aluminum profile aiming at the defects in the prior art.

The surface treatment process of the aluminum profile comprises the following steps:

step a: extruding, aging and CNC processing the aluminum ingot to obtain an aluminum profile with a preset specification and size;

step b: carrying out sand blasting treatment on the aluminum profile;

step c: carrying out anodic oxidation treatment on the aluminum profile subjected to sand blasting treatment;

step d: and spraying UV oil on the aluminum profile subjected to the anodic oxidation treatment.

Preferably, in the step c, the specific step of the anodic oxidation treatment is to clean and dry the aluminum profile, put the aluminum profile into the electrolyte for the anodic oxidation treatment, and generate an oxide layer on the surface of the aluminum profile; placing the aluminum profile into an activating solution for activating treatment to enable the oxidation layer to form concave holes; carrying out anode coloring treatment on the aluminum profile; and (5) hole sealing treatment is carried out on the aluminum profile.

Preferably, the oxide layer is also subjected to hardening treatment while the electrolytic coloring is performed; the method comprises the following steps: s1, grinding the ceramic into ceramic powder, preparing an electrolytic coloring solution, adding the ceramic powder into the electrolytic coloring solution, and uniformly stirring to prepare a colored turbid solution; and S2, placing the aluminum profile into the colored turbid solution, and adding current for treatment.

Preferably, in the step b, the pressure in the pressure sand blasting process is 0.5-0.8 MPa, the volume of the steel grit in the sand tank is not more than 2/3 of the volume of the sand tank, and the included angle between the nozzle and the surface of the aluminum profile to be sprayed in the pressure sand blasting process is 20-35 degrees.

Preferably, after the step b treatment, acid washing is performed, and the specific steps are as follows: placing the shot-blasted aluminum profile into a pickling tank for chemical polishing, wherein the pickling solution contains 3-5% of sulfuric acid, 5-10% of hydrochloric acid and 6-12% of nitric acid, and the solvent is deionized water; after acid washing, the aluminum profile is taken out and washed again.

Preferably, after acid washing, the aluminum profile after washing is passivated, and then washed clean after passivation.

Has the advantages that:

(1) the aluminum alloy section has excellent acid and alkali resistance, corrosion resistance, wear resistance, oxidation resistance, electric insulation property and the like by adopting a specific surface treatment process;

(2) the aluminum profile treated by the process has the advantages of hard texture, enhanced wear resistance and acid resistance and better practicability.

Detailed Description