What should I do if the stainless steel pipe is rusty? What should I do if there are rust spots on t

With oxalic acid Oxalic acid can completely reduce the rust, so that the rust becomes ferrous oxalate, which is as bright as new with a flush of water, and the surface metal treated with oxalic acid has been passivated and is not easy to regenerate rust.

Remove with molten steel and wet the rust of the steel basin with clean water; Use a cotton swab or cotton cloth dipped in a little molten steel to wipe off the rust, and clean the molten steel within 10 seconds after scrubbing to prevent the product from changing color; Wash it with water and dry it with a cloth. 304 stainless steel is a common material in stainless steel, with a density of g cm3, which is also called 18 8 stainless steel in the industry. High temperature resistance of 800 degrees, with good processing performance and high toughness, it is widely used in industry, furniture decoration industry and food and medical industry.

Causes of rust The surface of stainless steel contains dust containing other metal elements or the attachment of different metal particles, in the humid air, the condensation between the attachment and the stainless steel, the two are connected into a microbattery, which triggers an electrochemical reaction, and the protective film is destroyed, which is called electrochemical corrosion. The surface of stainless steel adheres to the juice of organic matter (such as melon vegetables, noodles and soup, phlegm, etc.), which constitutes organic acid in the presence of water and oxygen, and forms organic acid corrosion on the metal surface for a long time. The surface of stainless steel contains acids, alkalis and salts (such as alkaline water and lime water spraying on the decoration wall) to cause local corrosion.

In polluted air (atmosphere containing a large amount of sulfides, oxides, and hydrogen oxides), condensation water forms sulfuric acid, nitric acid, and acetic acid liquid spots, causing chemical corrosion.

Sand it with sandpaper, just do it. Generally, the appearance is not good-looking.

If rust spots appear, don't worry, just use the common rust remover or cleaning paste on the market.

First of all, it is normal for stainless steel pipes to have rust spots, but there are solutions

The first is the treatment of the glossy tube, first wipe off the rust spots, then polish it with a polishing machine, and finally apply anti-rust paste;

The second way to solve the rust spots in the brushed pipe is to wipe the rust spots with a brushed cloth several times, and then apply anti-rust paste.

Stainless steel pipes will also rust, and anti-rust measures must be taken during use; Jiaqi stainless steel provides you with solutions to the problems related to stainless steel pipes.

No matter how difficult to clean the dirt, remember not to use sharp objects such as steel wool balls to scrub, because this will scratch the surface of the stainless steel pipe, the stainless steel pipe is not easy to rust mainly due to the high chromium oxide film on its surface, if this passivation film is destroyed, it will inevitably lead to the stainless steel pipe being corroded.

If there are small rust spots, it is recommended to use an old wet towel dipped in toothpaste to scrub clean, and then wipe the water dry.

For small rust spots, you can also take our household soap bubbles to add soapy water, and use an old towel soaked in soapy water to scrub the part with rust spots, and the rust spots will disappear.

For those dirt or grease that are difficult to clean, it is recommended to use dish soap + tomato juice + water, a 1:1:1 mixed solution to soak or cover the part to be cleaned, and wipe it off with a cotton cloth after 3 or 5 minutes.

Wash the stainless steel tubing with carrots. Cut off the carrots and bake them on the fire until they are fully cooked, just try to soften them with your hands, and then use the roasted carrots to wipe the stainless steel tube, and after wiping, rinse them with water to remove the stains.

Note: There are two ways to use the acidity of the food itself to clean, because it is naturally bringed, the acidity is not strong.

There is a large amount of rust attached to the surface of stainless steel pipe products, it is recommended to use anti-rust paste on the market to remove the surface stains or rust, and then clean it with clean water or weak alkaline soapy water.

As far as stainless steel pipes for industrial use are concerned, they can be divided into physical rust removal and chemical rust removal.

Physical rust removal is the use of tools to perform mechanical rust removal.

Chemical rust removal is the use of rust remover, neutral rust remover, ACS rust conversion agent, etc.

The common rust remover is acidic, easy to cause hydrogen embrittlement for the use of stainless steel, and improper operation will cause excessive corrosion of the metal substrate; Neutral rust removers do not affect metal substrates, while rust converting agents convert rust spots on metal surfaces into rust barriers.

If it appears, it proves that the environment is still not very good, and the degree of taste is relatively high, well, the moisture has a certain degree of weak corrosiveness, and if there is rust, you can remove the rust or wipe the rust clean.

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There is more than one solution to this problem, and I think the solution I am thinking about will not solve your problem accurately, and the detailed answer needs to be thought of by yourself.

Why do stainless steel water pipes also rust? When brown rust spots (spots) appear on the surface of stainless steel pipes, people are surprised: they think that "stainless steel is not rusty, rust is not stainless steel, and there may be a problem with the steel".

In fact, this is a one-sided and erroneous view of the lack of understanding of stainless steel. Stainless steel....

When other metals adhere to the surface of stainless steel pipes, there is a greater chance of rusting. The rust caused by other metals adhering to the stainless steel pipe is generally not very serious, we can use a sponge or cloth to clean the rust on the stainless steel pipe with neutral detergent, toothpaste or soapy water. 2. When there are many harmful substances in the exhaust, the stainless steel pipe is also easy to cause rust.

For example, in factories or areas with a lot of traffic on city streets, there will be more harmful substances in the air, and the appearance of stainless steel pipes.

There are many models of stainless steel, and the anti-rust performance is the best in CR18Ni9TI, and the new national standard standard: GB24511-2009 06CR19NI10, which is usually called 304 stainless steel. The 304 steel grade is the American standard ASTM A240 A240M 304.

It is recommended that when you buy stainless steel tableware, you should buy this specification. For example, electric kettles will basically advertise themselves as 304 stainless steel in a certain position, which is stainless steel that meets the national food standard legally. **Also attributed to other types of stainless steel that generally rust.

How to remove rust after stainless steel rusts? The common method is mechanical grinding, polishing and rust removal. The second is pickling to remove rust, because the composition of rust is iron oxide, which will be dissolved by chemical reaction when encountering hydrochloric acid, sulfuric acid, and nitric acid.

It is usually safer to use a certain concentration of hydrochloric acid. Use a hydrochloric acid aqueous solution with a concentration of 10% to 20%, soak the objects that need to be removed in the hydrochloric acid solution for a period of time, and rinse with water. If the stainless steel box of toilet paper in the bathroom is rusty, you can use a brush to repeatedly brush it with hydrochloric acid aqueous solution, and after the rust disappears, rinse it with water.

The aqueous solution of hydrochloric acid has ***, and rubber gloves should be worn for the above operations.

1. Chemical Methods:

Pickling paste or spray is used to assist in the re-passivation of the corroded parts to form a chromium oxide surface film to restore its corrosion resistance, and after pickling, the surface must be cleaned with clean water for contaminants and acid residues. After passivation, it is re-polished with polishing equipment and a polishing wax cover is applied. Only slight rust spots.

Stainless steel welded pipe.

You can also use gasoline and engine oil (ratio 1:1) mixture to wipe off rust spots with a rag.

2. Mechanical Methods:

Sandblasting cleaning, shot blasting with glass or ceramic particles, annihilation, brushing and polishing. When using mechanical methods, it must be carried out in a dry and clean environment, because impurities in the air will cause the protective layer damaged by rust to not be repaired in time, and the chemical reaction will continue to occur and new rust spots will appear. The mechanical method can only clean the surface of the stainless steel welded pipe and will not change the corrosion resistance of the material itself, so after mechanical cleaning, it is necessary to re-polish with polishing equipment and use a polishing wax cover.

Rust removal can also be divided into physical rust removal and chemical rust removal, generally our pipes are rusted, basically use tools to remove oxides, such as grinding the steel surface with wire brushes and other tools, you can remove loose or warped oxide scale, rust, welding slag, etc., as well as pipes like wire drawing, we can use wire drawing balls to manually draw wire again in the rusty part, and can also achieve the purpose of rust removal.

The chemical rust removal method is to use chemical and electrolytic methods to do pickling treatment, the use of chemical pickling, can remove oxide scale, rust, old coating, the principle is to use pickling liquid and the surface of the pipe oxide chemical reaction, so as to achieve the effect of rust removal.

1. Use white vinegar. Vinegar reacts chemically with rust on metal, breaking it down. You can soak the metal in white vinegar for a few hours and then wipe off the rust.

2. You can soak aluminum foil in vinegar and use it as a brush to scrub the rust. Compared to steel wool, aluminum foil is less worn, but still has the ability to remove rust. You can use regular vinegar and let the rusty metal soak in the vinegar for up to 24 hours before it is cleaned.

This method doesn't require much scrubbing.

3. Try using lime and salt. Sprinkle salt over the rusty area, cover it thoroughly, and pour the lime juice on top. The lime peel should be sufficient to remove the rust layer and not further harm the metal. Lemons can also be used instead of limes.

You can buy "toilet clean" in the supermarket, generally used for cleaning toilets have a rust removal function, edible vinegar can also remove rust, but the effect is not as fast as toilet cleaner.

Wash with vinegar, a chemical reaction will occur, wipe dry after washing, or it will not corrode.

The easiest way to do this is to sand it with fine sandpaper and repaint.

If there is ** to know the specific cause of rust more accurately, in order to accurately judge, is red rust or white rust, red rust is the base material rust, white rust is the galvanized layer rust, if the substrate rust to remove the rust can be removed with acid leaching, if the coating rust can also be used acid leaching, but this will also fade the coating, the substrate will be more prone to rust, it is best to re-plate, passivation. There is a suggestion, the best way is to replace the water pipes in the whole house, you can replace the stainless steel water pipes, which have a long service life, are healthy and hygienic, and do not rust.

First of all, galvanized pipes have been rarely used, and China's Ministry of Construction and other four ministries and commissions have also issued a document to ban galvanized pipes from 2000, the cold water pipes in the new residential areas have rarely used galvanized pipes, and the hot water pipes in a few residential areas use galvanized pipes. The galvanized pipe is used as a water pipe for a few years, and a large amount of rust is produced in the pipe, and the yellow water flowing out not only pollutes the sanitary ware, but also is mixed with bacteria that breed on the uneven inner wall, and the corrosion causes the heavy metal content in the water to be too high, which seriously endangers the health of the human body.

So I suggest you change the pipes, now the galvanized steel pipes in the galvanized steel pipes have the advantages of uniform plating, strong adhesion, long service life and stronger anti-corrosion ability.

If you really insist on continuing to use it, the rust on the outside is easy to solve, and you can paint it. Internally, there is no way, it has to be replaced.

There is a layer of zinc on the surface of the galvanized pipe.

It can react with oxygen to form a dense oxide film - zinc oxide.

Thus protecting the iron inside from rust (iron cannot come into contact with water and oxygen).

After the galvanized pipe is rusted, you can use an electric grinding tool to polish the rusty part clean, and then use a cold galvanized paint with high zinc content (preferably 96% zinc content) to repair and polish it, except for the specific web link.

Steel pipe is a common building material, which is widely used in buildings due to its high mechanical strength and strong corrosion resistance. However, many people are worried about whether steel pipes will rust, because this will seriously threaten the service life and safety performance of steel pipes. In fact, steel pipes do rust, which is related to their material and use environment.

After a certain period of time and environmental action, the steel pipe will destroy the core to form an oxide film on the surface of the steel, which is generally reddish-brown or dark brown, which is commonly known as rust. The main reason for the rust of steel pipes is that the iron atoms in the steel combine with the surrounding oxygen to produce an oxidation reaction, so that the surface of the steel is gradually covered by the oxide film. When the surface of steel is covered by an oxide film, the surface of the steel will be rough and unsmooth, which will affect its service life and safety performance.

Although steel pipes can rust, they can also slow down the rate of rust or extend their service life in a variety of ways. One of the most common treatment methods is to apply anti-corrosion treatment to the steel pipe. Common anticorrosive materials include petroleum asphalt, epoxy resin, polyurethane, etc.

The use of these anti-corrosion materials can cover the surface of the steel pipe, thus forming a protective film that prevents oxygen from coming into direct contact with the surface of the steel pipe and slows down the rate of rusting.

In addition, it is also possible to maintain the steel pipe on a regular basis, such as cleaning the surface of the steel pipe and spraying paint. These methods can effectively slow down the rate of rust of steel pipes, so as to prolong the service life of steel pipes and ensure their safety performance.

In short, steel pipes are rusty, which will affect their service life and safety performance. However, by selecting appropriate anti-corrosion materials and carrying out regular maintenance, the rust rate of steel pipes can be slowed down, its service life can be prolonged and safety performance can be guaranteed. <>