Treatment method for surface of heat-insulation corrosion-resistant aluminum alloy door and window

Abstract

The invention discloses a treatment method for the surface of a heat-insulating corrosion-resistant aluminum alloy door and window. The treatment method comprises the following steps that the surfaceof a window frame is subjected to cleaning, oil removal, polishing, soaking, air drying, sand blasting treatment, passivation treatment, and is sprayed with a thermal insulation layer formed by a thermal insulation composition, and is sprayed with a corrosion-resistant layer formed by a corrosion-resistant composition, and layer sealing treatment and aging treatment are conducted on the corrosion-resistant layer through a nickel fluoride cold hole sealing agent. According to the method, before the thermal insulation composition and the corrosion-resistant composition are sprayed to form the thermal insulation layer and the corrosion-resistant layer, and the window frame of an aluminum alloy door and window is subjected to a series of treatment, so that the binding force of the thermal insulation layer and the corrosion-resistant layer on the surface of the window frame of the aluminum alloy door and window can be improved, and the thermal insulation layer and the corrosion-resistant layer are not prone to falling off; and the continuity and integrity of a film layer of the corrosion-resistant layer can be improved by carrying out layer sealing and aging treatment after the corrosion-resistant layer forms a film, and the surface quality of the aluminum alloy door and window can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of surface treatment of aluminum alloy doors and windows, in particular to a heat-insulating and corrosion-resistant surface treatment method of aluminum alloy doors and windows. Background technique [0002] Aluminum alloy doors and windows refer to doors and windows made of aluminum alloy extruded profiles as frames, stiles, and fan materials. They are called aluminum alloy doors and windows, referred to as aluminum doors and windows. Composite doors and windows, aluminum alloy has the characteristics of low density, high specific strength and specific stiffness, excellent castability and good processing performance, and also has good damping and shock absorption performance, which is very suitable for use as a door and window material. [0003] However, the aluminum alloy standard electrode has a low potential and active chemical properties, and is easily oxidized by air at room temperature to form a thin...

AI Technical Summary

Problems solved by technology

[0003] However, the aluminum alloy standard electrode has a low potential and active chemical properties, and is easily oxidized by air at room temperature to form a thin oxide film. The oxide film is porous, loose, and has poor corrosion resistance. Aluminum alloy workpieces often need to be Take some effective surface treatment methods. Most of the existing heat-insulation and corrosion-resistant treatments on the surface of aluminum alloy doors and windows are used to brush heat-insulation and corrosion-resistant coatings to form heat-insulation and corrosion-resistant coatings on the surface of aluminum alloy doors and windows to improve heat insulation and anti-corrosion performance, but only by painting the paint on the surface of aluminum alloy doors and windows, it is easy to cause coating cracking, peeling and falling off. After a long time, the surface of aluminum alloy doors and windows will still be affected by corrosion. Therefore, the present invention proposes a A heat-insulating and corrosion-resistant aluminum alloy door and window surface treatment method to solve the deficiencies in the prior art