Zhejiang is anticorrosive anti-corrosion company through various means, to protect the rusting of metal objects, to achieve the purpose of prolonging the service life, corrosion resistance, chemical corrosion, electrochemical corrosion and other physical methods commonly used.
Corrosion protection of steel structure of Zhejiang anti corrosion company
Scope: corrosion of large steel structure, such as lightning tower, sea lighthouse, large reservoir, water gate tower, offshore oil production facilities, tanker, tank, storage tank, oil tank, carbonization tower, heat exchanger, chimney, container, ship, offshore platform steel structure and so on, are in the marine atmosphere and long-term industrial atmosphere corrosive environment. To long-term use, rather than a large area of maintenance, long-term coating protection is the best for the former, the service life of up to 20-30 years, maintenance costs less, can obtain obvious economic benefits.
The corrosion characteristics of steel structure under atmospheric environment by the sun, wind, rain and snow, frost and season variation of temperature and humidity, the moisture and oxygen in the atmosphere is an important factor causing outdoor steel structure corrosion caused by corrosion of steel structure, industrial gas containing SO2, CO2, NO2, CI2, and H2S NH3, although the content of these ingredients is very small, but it should not be neglected in the iron and steel corrosion, which SO2 has the greatest effect, CI2 can make the metal surface passivation film is destroyed. These gases are soluble in water, acid, acid rain, corrosion of metal facilities. The characteristics of the ocean atmosphere contains a lot of salt, mainly NaCI, salt particle deposition on the surface of the metal, because it has the effect of increasing the moisture and suction conductive liquid film on the surface while CI- itself has very strong erosion, which aggravated the corrosion of metal surfaces. The corrosion of steel structure is more and more serious, and the corrosion rate is much higher than that of the interior atmosphere.
Protection methods: metal zinc, aluminum has a great resistance to atmospheric corrosion characteristics. In the iron and steel components, zinc, zinc, aluminum, zinc, aluminum is the negative potential and iron and steel to form a sacrificial anode protection function so that the steel has basically been protected. At present, the spray coating is used to prevent the corrosion of atmospheric and oceanic atmosphere:
(1, spraying aluminum coating and steel matrix combination force is firm, the coating life is long, the long-term economic benefit is good;
(2, flexible, suitable for large and difficult to maintain the long-term protection of the steel structure, can be on-site construction;
(3, spraying zinc or sprayed aluminum coating and anti-corrosion coating closed, can greatly extend the life of the coating, from the theoretical and practical application of the effect of point of view, spraying zinc or sprayed aluminum coating is the best bottom. Metal spray coating and anticorrosion coating of the composite coating protective life than metal spray coating and anticorrosive coating protective layer two and longer life, for a single coating layer life several times.
Long term heavy duty coating by primer, intermediate paint and paint composition.
From long-term economic considerations, the most economical spray coating, but a one-time investment, the construction of a good coating can be in 10 years without maintenance. Intermediate epoxy zinc rich primer + epoxy micaceous iron oxide paint and acrylic polyurethane long-acting protection system has better economy.
Anticorrosion of glass fiber reinforced plastics in Zhejiang
Advantages of glass fiber reinforced plastic corrosion protection project
Corrosion resistant resin and glass fiber surface felt are used to prevent corrosion layer of glass fiber reinforced plastics. The corrosion resistance is high, the strength is good, and the service life is long. In recent years, is widely used in electric power, metallurgy, glass, petroleum chemical industry, printing and dyeing, machinery, environmental protection and other industries in the storage tank, pickling tank, storage tank, storage tank, acid-base workshop building. So what is the advantage of FRP corrosion protection project?
1, lightweight glass steel: the proportion of only 1.4-2.0, while the tensile strength of steel fiber wrapped glass up to 300-500Mpa, exceeding the ultimate strength of ordinary steel, such as the calculation of strength, also has reached or exceeded some special alloy steel, it can be used as the main structure material anti-corrosion equipment, and transportation, convenient installation and maintenance the advantages of.
2, excellent corrosion resistance: one of the biggest characteristics of glass steel, is good corrosion resistance. Through the choice of the type and grade of the resin, the suitable molding process can be used to produce a variety of acid, alkali, salt and organic solvent glass fiber reinforced plastic products.
3, good surface performance and easy cleaning and sterilization properties: because the glass steel is integrally molded, seamless, smooth inner wall, and chemical medium, there is little corrosion and scaling phenomenon of the surface, but do not breed bacteria and microorganisms. Therefore does not pollute the media, very easy to clean, the food and drug administration departments, special inspection, glass steel has reached the food brewing, pharmaceutical industry requirements.
4, good design: glass steel can change its raw materials, in proportion to the number and arrangement of a reinforced material, composite materials to meet different performance requirements.
5, good construction process: not cured resin and reinforced materials have the ability to change shape, therefore, can be easily processed into the desired shape by different molding methods and tooling. This feature is the most suitable for large, complex equipment and construction requirements, applicable to the field of construction and assembly.
6, anti aging, flame retardant: glass fiber reinforced plastic is the category of products, matrix materials, natural aging and burning problem. But the world after more than 60 years, China after more than 30 years of research, has been initially resolved, reinforced materials and coupling agent treatment, the use of 50 years, bending strong