What are the reasons for the corrosion of aluminum alloy doors and windows?

There are many reasons for the corrosion of aluminum alloy doors and windows, and it is recommended to choose noble doors and windows. The company's small waist sliding door is very good, the small waist series single glass configuration 6mm tempered glass, the small waist series double glass configuration 4 + 15a + 4 insulating tempered glass; The 16mm wide ultra-narrow door leaf also has a large view in a small apartment; It can be made of three-link structure (single-track, double-track, and three-track structure can be configured), and the hidden design of the door leaf brings out the physical beauty of simple geometry. The specific influencing factors are:

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 sudden temperature drops from high temperature, the water vapor in the atmosphere condenses into a film, which also accelerates 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, the harmful gases and dust in the air have also increased significantly, some of which are corrosive in themselves, and some are condensed in water droplets to corrosive to metal.

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Summary. The main factors affecting the corrosion of aluminum alloys are environmental factors, metallurgical factors and stress factors. The three are interconnected and mutually influential.

What causes the corrosion of aluminum alloy surface?

The main factors affecting the corrosion of aluminum alloys are environmental factors, metallurgical factors and stress factors. The three are interconnected and mutually influential.

1. Environmental factors affect the environmental factors of aluminum alloy stress corrosion mainly include: ion type, ion concentration, solution pH value, oxygen and other gases, corrosion inhibitors, ambient temperature, environmental pressure, etc. In the study of the stress corrosion of 2A12 and 7A04 aluminum alloys in different atmospheric environments, it was found that the sensitivity of Huming aluminum alloys to stress corrosion and burial corrosion in different environments was different, and it was more sensitive in the marine environment.

The marine environment contains a large amount of salt, and Cl- will penetrate the protective film on the surface of the aluminum alloy and enter the interior, causing decay and erosion on it.

Corrosion occurs on the surface of aluminum doors and windows.

Pro, this is mainly the oxygen in the air and the birth of aluminum alloy doors and windows surface reflects the production of HNO3, which further corrodes the doors and windows.

In addition, the change of temperature will also aggravate the rust of aluminum alloy doors and windows. When the temperature drops sharply, the water vapor will condense into a film, which will accelerate the occurrence of rust, and the longer the humidity, the more severe the situation.

What is the reason, is it man-made?

This should be a large number of harmful gases and dust and dust in the air, some of which are corrosive and dusty, and some are condensed in the fog and have a corrosive effect on metal rolling. This shouldn't be artificial.

Can you corrode with sodium hydroxide?

Pro, sodium hydroxide solid ones will not, liquid ones can corrode.

Sodium hydroxide is slightly corrosive to aluminum products, and both will produce sodium aluminate.

Will this happen if the interior window is sprayed?

In this case, what can be corroded by human use?

Unless it is estimated to spray corrosives.

Then scrape it on it with something sharp, otherwise there are very few such corrosives.

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Alloy window corrosion, for abnormal corrosion, we recommend that the wall building mortar try not to use sea sand, such as the use of the area, it is recommended to refer to the "construction sand GBT14684-2001" must be cleaned with water, chloride ions to the following, at the same time in the construction process of the aluminum alloy door and window profile and the wall hole contact position to do a good anti-corrosion treatment, generally such as anti-bump and waterproof measures can play an anti-corrosion effect, asphalt is also a more feasible method.

1.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.

2.If the aluminum alloy doors and windows are rusted due to oxidation, the treatment method is very simple, you can first use a knife or other utensils to scrape off the aluminum rust on the surface, then clean the aluminum alloy doors and windows with soapy water, and then wipe them dry with a rag, and finally only need to apply wax oil and then use a rag to polish the aluminum alloy doors and windows to restore smooth as new.

General aluminum alloy doors and windows are not easy to rust, but after a long time it is inevitable that there will be local rust, at this time we in addition to repairing the rusty aluminum alloy doors and windows, we should also pay attention to the maintenance of aluminum alloy doors and windows, every six months can use lubricating oil to maintain the hardware of aluminum alloy doors and windows, the lubricating oil can be dripped into the hardware rotation, sliding and locking points and other parts for lubrication work, only need to drip into the lubricating oil after repeated opening and closing three to five times.

In the early morning, the dawn crept across the sky, and the light penetrated into the room through the doors and windows, and the life and the hall were suddenly brightened. Nowadays, families generally use more dominant aluminum alloy doors and windowsNext, the old carpenter Luban doors and windows share some tips for aluminum alloy door and window maintenance!

In the use of aluminum alloy doors and windows, the action should be light, and the push and pull should be natural; If you find that there is difficulty, do not deadlift and push, and the fault should be eliminated first. Dust accumulation and deformation are the main reasons for the difficulty of aluminum alloy doors and windows, and it is necessary to keep the door frame clean, especially the cleanliness of the sliding groove. A vacuum cleaner can be used to suck up the dirt in the trough and the door seal.

When cleaning aluminum alloy doors and windows, people should not step on the aluminum frame, and do not pull the frame for support.

Aluminum alloy doors and windows can be dipped in soft cloth with water or neutral detergent, do not use ordinary soap and washing powder, and do not use detergents, toilet detergents and other strong acid and alkali detergents.

After the rain, the wet glass, doors and window frames should be wiped out in time, and special attention should be paid to wiping off the water in the chute. If the chute is used for a long time, you can add a little engine oil or apply a layer of fire wax oil.

The connection parts of the aluminum alloy frame should be checked frequently, and the bolts should be tightened in time to replace the damaged parts. The vulnerable parts of aluminum alloy doors and windows such as positioning axle pins, wind braces, and floor springs should be checked from time to time, and lubricating oil should be added regularly to keep them clean and flexible.

Sealing wool strip and glass glue seal are the key structures to ensure the sealing and thermal insulation of doors and windows, and should be repaired and replaced in time if they fall off.

Frequently check the joint of the aluminum alloy frame wall, if it is loose for a long time, it is very easy to deform the frame as a whole, so that the doors and windows cannot be closed and sealed. Therefore, the loose screws at the connection should be tightened immediately, such as the loose screw footing, and a small amount of cement should be adjusted with epoxy strong glue to seal it.

Because the aluminum on the surface of the aluminum products is rapidly oxidized after being exposed to the oxygen in the air, the aluminum oxide oxide layer is formed, and this dense oxide layer blocks the contact between the aluminum and the outside world.

Aluminum products are a general term for daily necessities and industrial products processed from aluminum alloy as the main raw material. Aluminum alloy is a general term for aluminum-based alloys. The main alloying elements are copper, silicon, magnesium, zinc, manganese, and the minor alloying elements are nickel, iron, titanium, chromium, lithium, etc.

Aluminum alloy has low density, but relatively high strength, close to or more than high-quality steel, good plasticity can be processed into various profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, widely used in industry, the amount of use is second only to steel.

What causes the corrosion of aluminum alloy surface?

There are three conditions for the production of SCC in metal materials: (1) the material is sensitive to SCC; (2) service in a specific corrosive environment (in the case of aluminum alloys, in a saltwater medium or in a corrosive atmosphere); (3) Subjected to tensile stress. The factors affecting stress corrosion of aluminum alloys mainly include environmental factors, metallurgical factors and stress factors.

The three are interconnected and mutually influential. 1. Environmental factors affect the environmental factors of aluminum alloy stress corrosion: ion type, ion concentration, solution pH value, oxygen and other gases, corrosion inhibitors, ambient temperature, environmental pressure, etc.

In the study of the stress corrosion of two aluminum alloys in different atmospheric environments, 2A12 and 7A04, it is found that the stress corrosion susceptibility of aluminum alloys in different environments is different, and it is more sensitive in marine environments. The marine environment contains a large amount of salts, and Cl- can penetrate the protective film on the surface of the aluminum alloy and enter the interior, causing corrosion to it. The experimental results show that when the mass concentration of Hno3 solution is between 20% and 40%, the corrosion rate of aluminum alloy is intensified, and the corrosion rate of aluminum alloy reaches the highest point when the concentration is about 35%.

In the concentrated HNO3 solution, the stress corrosion of the aluminum alloy is not obvious, and the reason for this phenomenon is that a dense oxide film is formed on the surface of the aluminum alloy, which prevents the further corrosion of Hno3. 2. Metallurgical factors Metallurgical factors mainly include the influence of casting method, processing method and hot gold stress corrosion, and it is found that cathodic polarization increases the stress corrosion sensitivity of aluminum alloy, and the stress corrosion sensitivity of friction stir welding is lower than that of fusion welding. SUVU generally considers that properly treated 6061-T6 and 3004 aluminum alloys will not exhibit SCCs

The different metallurgical factors change the type of aluminum alloy, and cause the difference in the internal structure and crystal structure of the aluminum alloy, which affects the electrochemical behavior and mechanical behavior of the aluminum alloy, resulting in different stress corrosion susceptibility of the aluminum alloy. What are the causes of poor corrosion of aluminum alloy? How to improve the yield of poor oxidation, uneven sandblasting of yin and yang color, and poor oxidation color difference in the process of aluminum products processing plant.

3. Stress factorsStress factors mainly include load type, load size, loading direction, loading speed, etc. In the case of SCC, the direction of stress must be perpendicular to the grain boundaries in order to be able to separate them. One of the key factors in stress corrosion is stress.

Different stresses will produce different effects, and the combination of alternating stress and environment produces corrosion fatigue, which is usually significantly different from the stress corrosion rupture caused by fixed stress. Corrosion fatigue is often more severe than stress corrosion. In addition, the difference in loading speed can also affect the susceptibility of aluminum alloys to stress corrosion.

Summary. 1. If the aluminum doors and windows are rusted due to oxidation, the aluminum rust can be gently scraped off with a knife, then washed with soapy water, wiped dry with a dry cloth, and then polished with a dry cloth after applying wax oil, which can be smoother as new.

2. Aluminum windows close to the kitchen, after some time, the broken bridge aluminum window frame will gradually turn yellow, remove these yellow stains can be wiped with cotton cloth dipped in kerosene, and then washed with dish soap, and finally rinsed with water, yellow stains can be eliminated immediately.

3. Stained windows can be wiped clean with lemon slices; Add 5% ammonia solution or gasoline to a basin of water, wash the glass with it, and then wipe it with a dry cloth after drying, the glass will be particularly bright.

4. If the dirt of the window frame is only a black stain, it can be wiped with cotton yarn dipped in "safety bleach", and then dipped in water to wipe it clean and dry.

5. If the yellow stains on the broken bridge aluminum door and window frames are not caused by greasy, you can directly wipe them with a clean rag dipped in "safe bleach" to remove the stains.

What to do about the corrosion of home aluminum alloy doors and windows.

This question is up to me, it takes a little time to type, so please be patient.

How to deal with the corrosion problem of aluminum alloy windows to prevent further deepening.

Why is window frame corrosion all indoors but not outside?

Why do horizontal rods that do not touch the wall corrode?

1. If the aluminum doors and windows are rusted due to oxidation, the aluminum rust can be gently scraped off with a knife, then washed with soapy water, wiped dry with a dry cloth, and then polished with a dry cloth after applying wax oil, which can be smoother as new. 2. Aluminum windows close to the kitchen, after some time, the broken bridge aluminum window frame will gradually turn yellow, remove these yellow stains can be wiped with cotton cloth dipped in kerosene, and then washed with dish soap, and finally rinsed with water, yellow stains can be eliminated immediately. 3. Stained windows can be wiped clean with lemon slices; Add 5% ammonia solution or gasoline to a basin of water, wash the glass with it, and then wipe it with a dry cloth after drying, the glass will be particularly bright.

4. If the dirt of the window frame is only a black stain, it can be wiped with cotton yarn dipped in "safety bleach", and then dipped in water to wipe it clean and dry. 5. If the yellow stains on the broken bridge aluminum door and window frames are not caused by greasy, you can directly wipe them with a clean rag dipped in "safe bleach" to remove the stains.

Most of the aluminum alloy corrosion in the home is due to the poor surface treatment of the aluminum alloy itself, such as the thickness of the oxide film is not enough, and the thickness of the spraying film is not enough.

I am in the community, and I found corrosion before I handed over the house, how to prevent it from going deeper? Thank you, teacher.

That is to say, it has been corroded, how to deal with it, so that it will not corrode again.

Methods of aluminum alloy anti-corrosion: 1. Surface grinding and polishing. 2. Surface sandblasting and shot blasting treatment. 3. Surface wire drawing treatment.

You can choose to have a professional staff take care of it.