Can the steel bar rust removal on construction site be used to remove the rust chemically with steel

In view of the current situation of the construction site with the demand for steel bar rust removal in China (most of the construction sites are tied up a few years ago or a few months ago), the most suitable rust removal method is to use steel bar rust remover spraying, a good steel bar rust remover does not contain a drop of hydrochloric acid, does not corrode the steel bar, mainly composed of a variety of accelerators, stripping agents, inhibitors, organic acids (phytic acid and edible phosphoric acid), surfactants and other compounds. Through the chemical reactions such as infiltration, absorption, transformation and regeneration of the rust layer on the surface of the steel bar, the rust is transformed into dense zinc iron phosphate composite salt, which is finally solidified into a waterproof and rust-proof neutral high corrosion resistance chemical conversion film (gray-brown), which is firmly solidified on the surface of the steel bar, which can significantly improve the gripping force of reinforced concrete and the adhesion of concrete, and effectively reduce and slow down the rust of steel bars in concrete.

There are many methods for steel bar rust removal, and the commonly used ones are manual rust removal, steel bar derusting machine derusting and chemical derusting.

One. Manual rust removal.

The common method of manual rust removal is generally to use a wire brush, sand disc, sack cloth, etc. to gently wipe or pull the steel bar back and forth on the sand pile to remove rust.

Two. Mechanical rust removal.

Rust remover.

For wire rod steel bars with thinner diameters, rust is automatically removed through cold drawing and straightening processes; The coarse steel bar is rusted by a disc wire brush derusting machine.

There are two kinds of steel bar derusting machine: fixed type and mobile type, which are generally made by the steel bar processing unit, and are driven by power to rotate the disc wire brush at high speed to clean the rust on the steel bar.

The stationary steel bar descaling machine is generally installed with a disc wire brush, and two descaling machines can also be combined to improve efficiency.

The sandblasting method is mainly used to remove rust by air compressor, sand storage tank, sandblasting pipe, sprinkler head and other equipment, and uses the strong air flow generated by the air compressor to form a high-pressure sand flow to remove rust, which is suitable for a large number of rust removal work and has a good rust removal effect.

Three. Chemical rust removal.

Steel bar rust remover is a kind of A and B component concrete steel bar rust removal and rust prevention material, this product is made of a variety of components, it is safer and more effective than the previous steel rust remover, and can remove serious rust in a short time. It can restore the natural color of the metal, no damage to the base metal, can wash the rust and other substances on the surface of the steel bar, can be automatically dissolved, and can also act in the fine gaps. No heating is required, and the best results are achieved at room temperature.

Non-combustible and non-explosive. The treated metal surface will not affect welding, plating, painting, and does not affect the grip and wrapping force of the steel bar.

Summary. Hello dear. When using steel derusting agent to remove rust, an appropriate amount of steel bar derusting agent should be proportioned according to the number of rusty building materials, and it needs to stand for a period of time after soaking, and then rinse with water, rinse it clean, wipe it dry or dry it as soon as possible.

Pay attention to rust prevention before and after using steel bar rust remover: 1. Keep the metal dry. Rust is the chemical process by which iron oxidizes and begins to shed metal.

This is because the metal is formed gradually by water entering or often touching water. Store the metal in a cool, dry place as much as possible to prevent moisture from accumulating. 2. Apply primer.

If you plan to paint metal, you can use a primer to help the paint adhere and keep the metal away from moisture. If the metal surface is slippery, you can use a spray primer. Rough metal surfaces need to be filled with filler-rich primers to fill in the gaps or pits.

In addition to a good primer, paint also keeps out metal and moisture. Make sure you use high-quality paint in order to get the best rust protection results.

Hello dear. When using steel derusting agent to remove rust, an appropriate amount of steel bar derusting agent should be proportioned according to the number of rusty building materials, and it needs to stand for a period of time after soaking, and then rinse with water, rinse it clean, wipe it dry or dry it as soon as possible. Pay attention to rust prevention before and after using steel rust remover:

1. Keep the metal dry. Rust is the chemical process by which iron oxidizes and begins to shed metal. This is because the metal is gradually formed by water entering or often touching water.

Try to store the metal in a cool, dry place to prevent moisture from accumulating. 2. Apply primer. If you plan to paint metal, you can use a primer to help the paint adhere and keep the metal away from moisture.

If the metal surface is slippery, you can use a spray primer. Rough metal surfaces need to be filled with filler-rich primers to fill in the gaps or pits. In addition to a good primer, paint also blocks limbs such as metal and moisture.

Make sure you use high-quality paint in order to get the best rust protection results.

The steel rust remover must be used as the original solution, and when the weather is fine, it is impossible to use it in rainy days, which does not affect the appearance of the surface of the steel bar, but does not affect the grip and cohesion.

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Generally speaking, on the construction site, for the raw materials and semi-finished steel bars, protective measures will be taken when the rainy season comes, and the most headache is that the steel bars that have been tied are corroded, which affects the quality of the final structure. So how to remove rust from the steel bar of the lashing number? Let's take a look.

Tied rebar refers to being carried out without removing the rebarRebar rust removalIt is also known as in-situ steel rust removal in the industry. Remind everyone to choose the right one according to the degree of rust of the steel barRust removal method for steel bars

For lightly corroded bound steel bars, the usual rust removal method is usedRebar rust removerSpraying method. How to do it: WillRebar rust remover(The original solution is used, can not be mixed with water) is loaded into a sprayer and sprayed directly on the surface of the steel bar, and the rust stains of the steel bar shall prevail.

The surface is dry for 2-4 hours, and the original color of the steel bar is exposed after drying, and the concrete can be poured after drying (do not splash water before drying).

1. Direct chemical rust removal (floating rust or light rust) without grinding.

After simply removing the dirt on the surface of the steel, the direct chemical rust removal can greatly improve the anti-corrosion effect and construction progress.

After using tools such as shovels and wire brushes to remove floating dust, rust blocks and other appendages on the surface of steel parts (so that the steel bar rust remover can penetrate into the steel surface), directly brush, spray or use a roller to brush the steel bar rust remover, and then brush and spray paint after 24 hours of drying.

After the steel bar rust remover is dry, it will not be sticky or stained, and there can be no white ash or whitish, otherwise the steel bar rust remover will have quality problems.

After simple treatment, chemical rust removal is more than 1 times more efficient than simple grinding and rust removal, reducing man-hours by 60%, and the anti-corrosion performance (compared to non-rust removal) is at least 4 times higher.

2. Chemical rust removal (heavy rust) after grinding.

There is rust foam on the surface of the steel treated by the grinding machine (rust ash can be seen when rubbing by hand), and there are still rust stains in the grooves, which affects the adhesion of the paint, and the steel under the paint film will rust out in the future, causing the paint film to rust. After grinding, the use of steel rebar rust remover can turn the wide stove rust ash on the steel surface and the rust stains at the groove into a chemical protective film, which is firmly combined on the steel surface and greatly improves the adhesion of the paint and the anti-corrosion performance of the paint.

After grinding, directly brush and spray steel rust remover, and paint directly after 24 hours of drying. After chemical rust removal is dry, it will not be sticky, do not stick to hands, and cannot be whitish and white ash.

Chemical rust removal after grinding increases the man-hours by 20% compared with light grinding without chemical rust removal, but the anti-corrosion performance is at least 1 times higher.

3. Chemical rust removal after sandblasting and shot blasting.

After shot blasting and sandblasting, the surface activity of steel is high and the anti-rust performance is poor, and the anti-corrosion performance can be improved by 30% after the use of chemical rust removal.

Steel bar rust remover rust removal effect is good, just pour the rust remover into the sprayer, and then spray on the surface of the rusty steel bar, spray evenly when spraying, for the steel bar with serious rust, it is best to wash with a high-pressure water gun, after drying, and then spray the steel bar rust remover, the effect is better. Next, we will introduce the methods of steel bar rust removal and the precautions for the use of steel bar rust remover.

What are the methods of steel rust removal.

1. Manual rust removal.

It is more difficult to remove rust by hand, and for thicker rust spots, you can use a hammer to loosen them, and then use a shovel to remove them. This method is easy to operate, but the rust removal efficiency is low, and it is difficult to achieve the specified cleanliness and roughness.

2. Mechanical rust removal.

Mechanical rust removal can completely remove rust, can carry out hair treatment on the coating, and the efficiency is better than manual rust removal, but the disadvantage is that the surface roughness is small, and the high-quality surface treatment quality cannot be achieved.

3. Chemical rust removal.

Chemical rust removal is the use of steel bar rust remover, this steel bar rust remover is more economical and labor-saving, is a more popular rust removal method, suitable for various forms and degrees of rust of steel bar rust removal.

Precautions for the use of steel rust remover.

1. The steel bar rust remover cannot be used with water when spraying.

2. Do not splash water if it is not dry 24 hours after spraying the steel bar, otherwise there will be white ash, and it is forbidden to carry out rust removal construction on rainy days.

3. Before spraying steel rust remover, you can rinse it with water, try to avoid the high temperature period at noon in summer construction, and catch up with the high temperature at noon in winter.

4. When spraying heavily corroded steel bars, be sure to spray a sufficient amount of rust remover, and the white ash will be less when spraying, and if the white ash is raised, the steel bar rust remover needs to be brushed again.

5. If you soak and remove rust, you should remove the white mud at the bottom every day, otherwise it will be stained with steel bars and cause whitening.

Many construction sites have been suspended for nearly half a year, and the steel bars on the construction site have rusted and cannot be used directly, so the steel bars must be derusted first. In view of this kind of construction site shutdown, how to remove rust from the steel bar on the construction site where the steel bar has rusted for about half a year? What is the easiest way to remove rust from rebar?

Today, Hubei Bafang rust removal technology will tell you about it.

The fastest, simplest and most economical way to deal with this situation is to use steel bar rust remover, which has the advantages of simple, convenient and fast. It is to pour the stock solution of steel bar rust remover directly into the sprayer, and then spray it directly on the surface of the rusty steel bar like a great farmer uncle's pesticide, and spray it thoroughly. Whether it is a bound column bar, plate bar, wall bar, or processed stirrups and inserts, this method can be used to remove rust from steel bars.

According to the needs of the country, the construction site was suspended due to the epidemic, and Hubei Bafang Rust Removal Technology has continuously worked hard and enterprisingly to develop a steel bar rust remover that does not contain any strong acid, which will not harm any base metal and only react with rust. This steel bar rust remover can not only remove rust but also prevent rust, and it can also prevent rust for 3 to 6 months in a natural state after removing rust. The formation of a protective film increases the grip between the steel bar and the concrete.

And Bafang brand steel bar rust remover is the most direct contact, without any corrosiveness, safer and more reliable operation!

Bafang Rust Removal has a R&D and production team of steel bar rust remover, as well as an excellent rust removal construction team, as many as 20 kinds of steel bar rust removal technology solutions, to help customers solve various rust removal and anti-corrosion problems throughout the day. Long-term in-depth cooperation with central enterprises, highly praised. According to the actual environment of customers, Bafang Rust Removal skillfully integrates various rust removal technologies, tailors rust removal and anti-corrosion solutions for construction sites, warehouses, factories and industrial parks, and provides you with one-stop rust removal solutions to relieve your worries.

There are many ways to deal with steel rust, to reach a certain degree of rust, the surface of the steel bar is eroded called rust flake flower, which is the need to remove rust, if not rust, the steel bar matrix causes serious damage, then the steel bar is scrapped, the economic loss is huge, there are many rust removal equipment in the market at present, many equipment is currently widely used, the cost is very large, the effect is obvious, there will be rust return, and the "rust remover" recognized by the market in rust removal avoids the phenomenon of rust return after rusting, the main features.

1. High safety performance, no phosphorus, no volatile, no odor, non-toxic, non-flammable and explosive.

2. It has wide applicability, and can replace sulfuric acid, hydrochloric acid, nitric acid, and some strong acidic and state-controlled products that pollute the air environment.

3. The performance is efficient, the rust can be removed thoroughly, the substrate is not damaged, the rust is washed without water after the rust is removed, the follow-up process of post-treatment is not affected, and there is no rust return phenomenon after the weld is derusted.

4. The speed of rust removal can be completed in 10-50 minutes within the range of room temperature, and the time for severe erosion is longer, and the work of removing the oxide scale can be done.

5. Environmental protection and high efficiency, the pH value of the working liquid is neutral, the waste liquid is also weakly acidic, no acidification reaction will occur, there are no heavy metal ions, and the waste liquid can be directly discharged after simple treatment, which can avoid the cost and labor cost of customer wastewater treatment.

Earth rust removal is a steel bar environmental protection rust remover: a kind of organic acids (plant acid, citric acid and edible phosphoric acid), complexing agents, permeation agents, corrosion inhibitors, surfactants, water and thickeners and other raw materials to prepare a high-efficiency rust remover, steel bar rust remover has the characteristics of high efficiency, fast, low quality, convenient construction. Compared with the traditional pickling rust remover, there are many advantages, environmental protection, pollution-free, non-toxic and harmless, no corrosion of steel bars, only reaction to rust, does not affect the performance of steel bars, and can also improve the adhesion of steel bars to concrete, no washing.

1. The steel bar rust remover cannot be used with water when spraying.

2. Do not splash water if it is not dry for 24 hours after spraying the steel bar, otherwise there will be white ash, and it is forbidden to carry out rust removal construction on rainy days.

3. Before spraying the steel bar rust remover, you can rinse the steel bar with water, and try to avoid the high temperature period at noon in summer construction, and catch up with the high temperature at noon in winter construction.

4. When spraying heavily corroded steel bars, be sure to spray a sufficient amount of rust remover, spraying less will cause white ash, if white ash, you need to brush the steel bar rust remover again.

5. If it is rust removal by soaking, the white mud at the bottom should be removed every day, otherwise it will be stained with steel bars and cause whitening.

How to judge whether the steel bar rust remover is good or bad?

1. Look at the ingredients: the main component of a good steel rust remover, Huishanshou, is generally organic acids such as phytic acid, because this kind of acid is not corrosive and will not affect the grip and wrapping force of reinforced concrete. Poor quality is generally composed of hydrochloric acid and oxalic acid, and this kind of rust remover is corrosive and easy to affect the steel bar.

2. See whether the rust returns: a good steel bar rust remover generally has an anti-rust function, and it can prevent rust for 2-3 months in a natural state after removing the rust. The poor quality rust return is particularly fast, and sometimes the steel bar rust removal construction has not been completed, and the steel bar has begun to return to rust.

3. See if there is a test report: A good steel bar rust remover will generally have a test report, and the quality will be high. The quality of poor steel bar rust remover is unqualified, and most of them do not have test reports.

How to store the rust leakage agent?

Method of preserving rust remover: during transportation and storage, it should be protected from exposure to the sun and stored in a cool and dry place. Keep out of reach of children. When the rust remover is not in use, seal it with a lid. Do not work in rain or snow.

All kinds of products, steel, and buildings will rust after years of exposure and oxidation, and we all need to re-rust the product to return to its bright side. Therefore, in the use of rust remover, we must pay attention to relevant matters, do a good job of protective measures, when there is a remaining number of the first number after use, you can put it in a cool place and save it for the next use.