How to remove rust and prevent rust of color steel plate, and how to prevent rust treatment of color

How to remove rust and spray paint color steel tilesAt present, the common color steel tile rust removal process in China is generally divided into three steps.

The first step is to use professional tools to polish the surface of the color steel tile, and then spray anti-corrosion coatings. This step requires a lot of labor and time costs, because after grinding, it is necessary to manually polish without dead angles, and then spray anticorrosive coatings.

The second step is to carry out deep cleaning, spray cleaning with high-pressure machines, and reinforce the damaged parts before construction.

In the third step, the anti-corrosion material is sprayed by high-pressure spraying.

The traditional color steel tile renovation process not only has many steps but also needs to consume a lot of material resources and manpower, and it is difficult to carry out operations on the roof.

There are two types of rust removal methods: physical rust removal and chemical rust removal.

Physical rust removal: wire brush, grinding wheel grinding, sandblasting, sandpaper grinding, ultrasonic cleaning rust removal, high-pressure water jet rust removal, etc.;

Chemical rust removal: use rust removal liquid, which includes hydrochloric acid, sulfuric acid, etc., but add pickling corrosion inhibitors.

There are temporary anti-rust methods and permanent anti-rust methods

Temporary anti-rust: the use of anti-rust oil, anti-rust liquid, vapor phase anti-rust materials, the use of peelable plastics, dry air sealing, oxygen removal sealing, etc.;

Permanent rust prevention: electroplating or oxidation, painting, organic coating, sacrificial anodic method, improved structure method, addition of corrosion-resistant elements, etc.

The specific method to be adopted should be selected according to the actual situation. Consider the process conditions, production status, equipment conditions, cost and other factors before and after rust removal and rust prevention.

Dear, hello, I am glad to answer for you how to prevent rust treatment of the incision of the color steel forest fiber branch board is Process flow 1, rust removal Because the rust on the surface of the color steel tile is not closely attached to the substrate, so before the anti-corrosion and rust prevention, the first step is to remove the rust, clean up the rust on the surface of the color steel tile, so that the substrate is completely exposed. There are many ways to remove rust, the most commonly used one is to use a hand-pushed grinder for comprehensive and overall grinding, including corrugated, tile grooves, gutters, roof ridges and other places, all need to be polished in place, otherwise it will affect the adhesion of the next anti-corrosion and anti-rust coating and substrate, thereby affecting the overall anti-corrosion and anti-rust effect. 2. The dust (mainly rust powder) after dust removal and rust removal and grinding will fall on the surface of the color steel tile, at this time, if the dust removal treatment is not carried out, it will also affect the spraying effect of anti-corrosion and anti-rust coating, so after the rust removal and polishing, we also need to carry out dust removal work, you can choose dust collection equipment or high-pressure air gun.

3. Waterproof, leakage repair If the color steel tile with serious rust will have local water leakage, at this time we need to first carry out waterproofing, leakage repair, waterproof leakage repair has a variety of ways, Jinji environmental protection technology adopts waterproof, rust, anti-corrosion and heat insulation integration scheme - the use of special waterproof coatings, with non-woven fabrics for waterproof vertical sliding construction, the effect is obvious. 4. After the spraying rust removal, dust removal, waterproof and other processes are completed, the anti-corrosion and anti-rust coating can be sprayed, generally one primer and two topcoats. Of course, the specific number of times is still determined according to the actual situation, serious rust can be done twice anti-rust primer, two times surface coating, and lightly corroded color steel this sensitive tile, you can also choose a primer, two times the construction plan of the surface coat.

When spraying, it is necessary to pay attention to the uniform spraying, the phenomenon of sagging can not occur, and to ensure that the spraying is in place, spraying is an important step of anti-corrosion and anti-rust of color steel tile, only spraying in place, in order to isolate the direct contact between the substrate and the air, in order to play the effect of anti-corrosion and anti-rust. Spraying is basically the last step of anti-corrosion and anti-rust of color steel tile, so far the anti-corrosion and anti-rust construction has ended, in some cases there may be some more processes, but the above four points are indispensable processes.

Manual rust removal: It is mainly a method of using hammers, shovels, knives, steel wires, brushes, and coarse abrasive cloth (paper) to treat the metal surface with rust and meet the requirements of rust removal.

Power tool rust removal: It is mainly a method to use air (electric) brush wheels or various derusting machines to treat the surface with rust and meet the requirements of rust removal.

Shot blasting and rust removal: It is mainly a way to achieve rust removal by driving the abrasive material to impact the rusty steel plate with the help of oil-free compressed air.

1. Sour vinegar method: vinegar can remove rust. It's effective. Heat the iron first and turn off the heat. Use a rag and dip some vinegar directly to wipe the rust area. Ordinary rust will fall off immediately.

2. Rice water: The decontamination effect of rice water is very strong. Soak it in a thicker rice wash for about 2-3 hours, boil the rice wash water, and rub it little by little with an iron rag during the boiling process.

3. Steel wool ball: Wipe it repeatedly in the rusty place, and then use a clean rag to wipe off the remaining stains on the iron sheet.

Hello, the rust on the iron plate can be quickly removed by chemical or mechanical methods: 1. Spray evenly on the surface of the iron plate with a special rust remover, and clean the surface of the iron plate after a period of time to remove the rust; 2. Use a hand grinder, install a wire brush, wear a mask and protective glasses, turn on the hand grinder, and use a wire brush to brush and grind the rusty parts of the iron plate to remove the rust on the iron plate; 3. Load the iron sand with a sandblasting machine, and spray the spray gun at the rusty part of the iron plate to remove the rust on the iron plate. In summary, the rust on the iron plate can be quickly removed by the above chemical or mechanical methods.

1) Manual rust removal is mainly a stuffy method of using hammers, shovels, knives, steel wires, brushes, and coarse abrasive cloths (paper cherry blossom cover opening) to treat the metal surface with rust and meet the requirements of rust removal.

2) Power tool rust removal. Also known as semi-mechanical rust removal ridge, it is mainly a method of using air (electric) brush wheel or various rust removal machines to treat the surface with rust and meet the requirements of rust removal.

3) Jet or projectile rust removal (also known as shot blasting rust removal, refer to Mingbang Heavy Industry shot blasting and rust removal equipment). Mainly with the help of oil-free compressed air (or high-pressure water).

4) Chemical rust removal (also known as pickling rust removal). It is a method that mainly uses inorganic dilute acid solution to brush (spray) and soak the surface of the corroded metal and achieve the purpose of rust removal.

5) Rust remover. It is mainly a method of brushing or soaking on the rusty metal surface with a weakly acidic chemical liquid (i.e., rust remover) to remove the rust on the metal surface through chemical reaction.