Iron and steel rust removal difficulty:iron and steel rust in the complete removal of rust, very difficult, as long as the steel surface rust, rust core can make the steel base continue to rust, even if the rust is very clean, the new metal surface area increases, the absorption of water increases, by the environmental corrosion medium is more likely to cause rust. According to the above situation, the metal protection using conventional anti-rust paint, the effect is not ideal. At present, the use of ordinary paint rust prevention, six months to a year there will be paint film cracking off, paint film rust, can not play a rust-proof role. The key of coating anticorrosion and rust prevention is to prevent the metal surface from continuing to rust. Anti-rust coating should be widely used, and it is a new type of coating that can be directly applied on the surface of residual rust steel. 3. Permeable rust coating:permeable rust coating originated in Europe and the United States. It uses paint. Additives wet rust. Penetration separates and surrounds the rust in the paint and prevents further development of rust with the help of special additives.

Anti-corrosion forms:Currently more mature anti-corrosion forms mainly include:ordinary coatings, Dacromet coatings, ZY anti-rust coatings, hot dip galvanizing, electrostatic spraying, multi-gas penetration, etc., in addition to ZY anti-rust coatings, other anti-corrosion forms have high requirements for steel rust removal grade, and the anti-rust effect of ordinary coatings is poor. The cost of Dacromet coatings, hot dip galvanizing, electrostatic spraying, multi-gas penetration anti-corrosion treatment is high and the process is complex, which is not suitable for on-site construction.

Rust prevention of steel

This product is composed of rubber and plastic resin, flake zinc and aluminum powder (solid content is 80%) chemical corrosion inhibitor, auxiliary agent, environmentally friendly diluent. Does not contain benzene solvents, lead, mercury, chromium and other toxic ingredients. Because zinc powder adheres to the steel surface, forming a conductive protective layer, zinc is consumed slowly in the protection process, but at an extremely low rate. In addition, due to the small amount of aluminum powder in the ZY-D anti-rust paint, the composition contains special additives and solvents, which can chemically react with the rust to produce a protective complex, which has enough permeability to the rust layer to bind the rust layer into a continuous sealing coating, sealing the entire rust layer and the steel surface. In addition, it is reactive enough to passivate or convert harmful iron compounds in the rust layer into harmless fillers, forming a passivated film on the steel surface. Its special polymer structure is resistant to ultraviolet light.

Product advantages:

1, excellent water resistance, salt water resistance.

2, excellent rust resistance, durability, impact resistance and good adhesion.

3, does not produce zinc salt, long-term use of the rod body will not black fade.

4, can be cleaned with water, the surface is not easy to deposit dust.

5, the construction process will not produce harmful substances to the human body and the environment.

Construction technology

1. Simple coating, spray brush coating or roll coating.

2. Shot blasting (sand) to remove surface oxidation and floating rust, oil, dust, water, etc.

3. The surface temperature of the steel is higher than the dew point temperature of 3℃.

4. When the steel surface is affected by rain or snow, no

5, can be painted in hot dip galvanized and local rusty rod body.

Construction precautions

1. When opening the barrel, the dust and debris outside the barrel should be removed first to avoid mixing into the barrel.

2. When painting, use special thinner according to spraying, brushing and rolling coating.

3, due to the large proportion of zinc powder, the coating process should be constantly stirred to prevent zinc powder precipitation.

4. When painting with rust, it must be ensured that the thickness of the paint film is more than three times that of the rust layer.

Coating technology

1, the choice of paint:primer:ZY-S high permeability with rust anti-rust paint:ZY-D rubber paint (color paint).

2. Coating interval time:primer and primer interval time ≥2 hours, primer and top paint interval time ≥12 hours, top paint and top paint interval time ≥2 hours (two-component)(single component) Note:After the workpiece to be painted is ready, adjust the two-component paint according to the amount, add the curing agent to the paint and stir evenly, the temperature is higher than 25℃, and use up within 3 hours.