Decoration less than two years of aluminum gold doors and windows how to long white spots

Doors and windows are an indispensable part of the room, and doors and windows have gone through four stages: wood, steel, aluminum alloy, and plastic steel doors and windows. Among them, aluminum alloy doors and windows.

With light weight and good sealing, it is widely used in the decoration of balconies, kitchens, bathrooms and other spaces in home decoration. Aluminium profiles.

The price is cheap, and has good plasticity, and is widely used in various fields of industry. However, aluminum profile processing is also a difficult point for general aluminum profile factoriesThe old carpenter Luban doors and windows will tell you about the situation of white spots on the surface of the aluminum profile and the solution:

If the water is not clean, some release agent will be added when the aluminum profile is formed and demolded.

The use of aluminum profiles should first wash off the surface of the release agent, etc., but if the water is not clean, white spots will appear on the surface of the aluminum profile, and then we should strengthen the washing.

The water used in washing is too dirty, as mentioned earlier, the aluminum profile should be washed when demolding, if the water quality is too dirty, it is easy to pollute the film, then we should replace the water to ensure the quality of washing.

The oxide film is polluted by soot, acid and alkali mist in the air. Timely dyeing and doing a good job in the protection of aluminum profiles can greatly reduce this symptom.

There are insoluble impurities in the dyeing solution, which are contaminated by oil, causing pitting corrosion of the dyeing workpiece and destroying the normal dyeing.

There is residual acid outflow in the gaps and deep holes of the workpiece, and the general irregular aluminum profile is washed in place, which is also another reason for the appearance of white spots on the surface of the aluminum profile.

Oxide layer destruction.

Generally, aluminum alloy will have a layer of oxide layer, if there are white spots, it may be that the oxide layer has been destroyed, or the aluminum alloy has been corroded by acid and alkali. If a scar occurs, it is difficult to remove, but it can be restored if there is no scar. It is recommended to wash it with dilute hydrochloric acid.

Do not take too long, and rinse with water after washing. If you wash it all, the aluminum alloy will turn into a color.

When choosing an aluminium door with inlaid glass, especially if it is designed with insulating glass, be sure to pay attention to its sealing performance. If the sealing is not good, it will lead to dirt and dirt in the hollow layer, which will affect the appearance. The brand products are made of high-quality sealing strips and all-round sealing treatment with advanced hot-pressed sealing technology, which can effectively prevent dust and water, and have outstanding sound insulation effects.

You can try to wipe it with a cloth dipped in water, if the wipe cloth falls off and then try to wipe it with a cleaning ball, if it is difficult to remove it for a long time, first remove the self-adhesive surface with a blade, remove the residual glue with gasoline or acetone, and wipe the residual glue with a cloth dipped in gasoline or acetone.

Care should be taken to avoid fires.

The dirty traces are mainly due to the oxidation of aluminum, which forms a protective film on the surface of the aluminum alloy, making the original gloss disappear. The easiest way is to rub it with an acid (e.g. white vinegar, hydrochloric acid) to remove the oxide from the surface. Don't use colored liquids!

It is best to hang slowly, you can use wood chips, so that you can use force without damaging the aluminum alloy; For small areas of glass glue, prepare erasers to erase. Glass glue generally requires acid and alkali resistance, so that the performance is good, and it is difficult for ordinary solvents to dissolve quickly. If you really use a large dose of alcohol, I am afraid that it will damage the glass glue that is normally applied.

Yidun doors and windows remind you that if you have a small white spot, first try to wipe it off with water, but you can't use acetic acid mixed with water to try. If you know it's some bird poop or something, you can use the organic solvent of the car wash bought online and try it without damaging the paint.

Aluminum alloy doors and windows may cause abnormal corrosion if they are in water seepage and damp parts for a long time. If you find that the aluminum alloy doors and windows have rusted, don't worry too much. Use a fiber brush with clean water to brush off the rust, and pay attention not to use steel sand, sandpaper, steel wool balls, etc. for grinding.

After the rust on the surface of aluminum alloy doors and windows is removed, the exposed aluminum elements will oxidize with the oxygen in the air to produce a new protective film. The use of sandpaper, steel wool balls, etc. will destroy the original alumina protective film, resulting in a new oxidation reaction of the aluminum alloy. It will make the frame of aluminum alloy doors and windows thinner and thinner, and ultimately affect the service life of aluminum alloy doors and windows.

is oxidized. Just wipe it off, but it will still be there after a while.

Generally speaking, the corrosion of aluminum alloy door and window hardware is a chemical reaction and electrochemical reaction process, and it is also a reaction of a variety of substances in various forms, which is difficult to explain with one or two reaction methods, but the cause of corrosion and damage of aluminum alloy door and window hardware is mainly electrochemical corrosion under natural conditions. Aluminum alloy doors and windows are generally composed of aluminum, stainless steel, zinc alloy, carbon steel, etc., and these metals with different electrode potentials and contact with each other form galvanic cells in the corrosive substance, resulting in electrochemical corrosion. Especially in the marine atmosphere and industrial atmosphere, the material structure of aluminum alloy doors and windows determines the inevitability of electrochemical corrosion.

Among them, the aluminum alloy profile is easy to passivate, and the potential changes from negative to positive compared to other materials, thereby slowing down or stopping corrosion, while the steel parts with negative potential will aggravate the corrosion and cause damage to the hardware.

Meteorological factors. 1. Humidity.

Since the condensation of moisture in the air into a liquid water film is a necessary condition for the formation of corrosive galvanic batteries, the humidity of the air is the main factor, and when the humidity reaches a certain critical value, a water film is formed on the surface, and the corrosion rate is intensified.

2. Temperature. When the temperature rises and the humidity rises, the corrosion is accelerated. When the temperature alternates by a sudden drop in high temperatures, the water vapor in the atmosphere condenses into a film, which can also accelerate the corrosion process. The longer the wet, the more severe the corrosion.

Generally speaking, when the temperature difference between day and night is greater than 6 and the temperature changes in the range of 5 50, as long as the relative humidity reaches 65 -75, the phenomenon of condensation will occur.

3. Air pollution.

Under normal circumstances, there are very few corrosive media in the air, only the corrosion of oxygen to metal is frequent, but with the continuous development of industrial enterprises in various countries, harmful gases and dust in the air have also increased significantly, such as carbon dioxide, sulfur dioxide and other gases generated after the combustion of coal, kerosene and diesel. There are also a large amount of dust, such as smoke, coal ash, chloride and other acids, alkalis, salt particles, etc. are also dispersed into the atmosphere, some of which are themselves corrosive, and some are condensed in water droplets to corrosive effects on metals.

That is the rust of the aluminum alloy, which is caused by the poor protective film on the surface of the aluminum alloy and the long-term humidity.

Laundry detergent cannot clean aluminum alloy doors, and generally clean with a damp rag. Now that white spots appear, see if you can repaint.

Look at the coloring process whether it is a film or spraying or electrophoresis, if the requirements are not high, you can take a photo, go to the market to buy the corresponding color caulk to apply.