Aluminum plate refers to the rectangular plate rolled with aluminum ingot processing, aluminum due to high surface brightness, is used in all walks of life, but after a long time of use 7075 aluminum plate surface will have stains or oxidation phenomenon, which requires us to do regular cleaning of aluminum plate as a leading enterprise, we have strict requirements for the cleaning process of aluminum plate:

1, wash the surface of the board with a lot of water;

2. Gently wipe the surface of the test board with a soft cloth soaked with detergent diluted with water;

3, then wash the board with a lot of water, wash away the dirt;

4, check the surface of the board, for the place that is not cleaned with detergent;

5. Rinse the board with clean water until the detergent is washed away.

Note: Do not clean the hot surface (temperature over 40 °C), because the moisture volatilization is harmful to the surface paint!

In particular, it should be noted that the aluminum plate please choose the appropriate detergent, a basic principle is: must choose neutral detergent! Do not use strong alkaline detergents such as potassium hydroxide, sodium hydroxide or sodium carbonate, strong acid detergents, abrasive detergents and paint dissolving detergents.

Methods for quality evaluation of aluminum-plastic panels

Aluminum-plastic sheet is a good material that is easy to process and form. It is an excellent product for the pursuit of efficiency and time, which can shorten the construction period and reduce costs. Aluminum-plastic plate can be cut, cut, slotting, band saw, drilling, processing countersunk, can also be cold bending, cold folding, cold rolling, can also be riveted, screw connection or adhesive bonding.

Analysis of common quality problems

Plastic plate discoloration, decolorization

The discoloration and decolorization of aluminum-plastic plates are mainly caused by improper selection of plates. Aluminum-plastic board is divided into indoor board and outdoor board, the surface coating of the two plates is different, which determines the different occasions for which it is applicable. The surface of the indoor plate is generally sprayed with resin coating, which can not adapt to the harsh outdoor natural environment, if used outdoors, it will naturally accelerate its aging process, causing discoloration and decolorization. The surface coating of outdoor aluminum-plastic panels is generally made of polyfluoroelastomer coatings with strong anti-aging and anti-ultraviolet ability, and the price of such panels is expensive. Some construction units cheat the owners, pretend to use indoor plates as anti-aging, anti-corrosion high-quality fluorocarbon plates, and extract unreasonable profits, resulting in serious discoloration and decolorization of aluminum plates used in the project.

The plastic plate is unglued and the aluminum plate is shed

The opening and falling off of aluminum-plastic plate is mainly due to the improper selection of binder. As an ideal binder for outdoor aluminum-plastic panel engineering, silicone adhesive has unique superior conditions. In the past, China's silicone glue mainly relies on imports, its value makes many people discouraged, only those high-rise buildings on the expensive curtain wall project dare to ask. Now, Zhengzhou, Guangdong, Hangzhou and other places in China have put into production different brands of silicone glue, resulting in a sharp drop in prices. Now, when buying aluminum-plastic panels, the seller will recommend that special quick-drying glue. This kind of glue can be used indoors, and when used outdoors in the changeable climate, the phenomenon of plate opening and falling off will appear. Aluminium plate

Deformation and bulging of aluminum-plastic plate surface

Stroll around in any city, it is not difficult to find some aluminum-plastic plate surface deformation, drum those bad scenery project. This phenomenon on small facade decoration projects, large high-rise buildings also have this phenomenon. In the past, in the construction, there have been such quality problems, we used to think that the quality of the plate itself; Later, after everyone's concentrated analysis, it was found that the main problem was the basic plate of the aluminum-plastic board, followed by the quality problem of the aluminum-plastic board itself. Dealers often provide us with the construction process of aluminum-plastic panels, and the recommended base materials are mainly high-density boards, woodworking boards and so on. In fact, when this kind of material is used outdoors, its service life is very fragile, and it will inevitably be deformed after wind, sun and rain. Since the base material is deformed, then the aluminum-plastic plate as the surface layer has no deformation principle? It can be seen that the ideal outdoor base material should be formed into a skeleton of Angle steel and square steel pipe after rust prevention treatment. If conditions permit, the use of aluminum as the skeleton is more ideal. The cost of this kind of skeleton made of metal materials is not much higher than that of wooden keels and high-density plates, which can indeed ensure the quality of the project.

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