FAQ About color coated steel
What is color coated steel ?
Color-coated steel refers to color-coated steel plate. Color-coated steel plate is a kind of steel plate with organic coating. The traditional coating can be divided into several categories. The top grade is fluorocarbon coating, which can resist corrosion for almost 20 years. Generally, they are distributed from steel mills to various places in the form of drums. The color steel plate we often see refers to the processed plate with a thickness of about 50~100mm. It is composed of the filler in the middle and the color steel plate on both sides. Among them, the thickness of color plate is 0.4mm, 0.5mm, 0.6mm and other different thicknesses, and the middle layer can be polyurethane, rock wool or foam plastic.
What is the process flow of color coated steel?
Color-coated steel plate is a product made of cold-rolled steel plate and galvanized steel plate after surface pretreatment (degreasing, cleaning, chemical conversion treatment), continuous coating (coating method), baking and cooling. The main production process of the common two-coating and two-drying continuous color coating unit is: uncoiling, pretreatment, coating, baking, post-processing and coiling.
What are the types of color coated steel plate substrate?
- Cold-rolled substrate color coated steel plate
The color plate produced from the cold-rolled substrate has a smooth and beautiful appearance and has the processing performance of cold-rolled plate; However, any small scratch on the surface coating will expose the cold-rolled substrate to the air, which will quickly generate red rust at the exposed iron. Therefore, such products can only be used for temporary isolation measures and indoor materials with low requirements
- Hot-dip galvanized color coated steel plate
The product obtained by coating the organic coating on the hot-dip galvanized steel plate is the hot-dip galvanized color coated plate. In addition to the protection of zinc, the organic coating on the surface of hot-dip galvanized color-coated plate also plays the role of insulation protection and rust prevention, and its service life is longer than that of hot-dip galvanized plate. The zinc content of hot-dip galvanized base plate is generally 180g/m2 (the maximum zinc content of hot-dip galvanized base plate for external use of double-sided buildings is 275g/m2.
- Hot-dip aluminium-zinc color coated plate
According to requirements, hot-dip aluminium-zinc steel plate can also be used as color coating substrate (55% AI-Zn and 5% AI-Zn)
- Electrogalvanized color coated plate
The product obtained by baking with the electro-galvanized sheet as the base plate and coated with organic coating is the electro-galvanized color coated sheet. Because the zinc layer of the electro-galvanized sheet is thin and the zinc content is usually 20/20 g/m2, this product is not suitable for outdoor production of walls, roofs, etc. However, due to its beautiful appearance and excellent processing performance, it can be mainly used in household appliances, audio, steel furniture, interior decoration, etc.
What is the composition of color coated steel?
Color-coated steel is made of hot-dip galvanized steel substrate or aluminum-zinc sheet as substrate, and coated with water-based fluorocarbon paint or polyester paint on both sides. After baking, carry out surface protection treatment, such as printing or embossing.
What are the properties of color coated steel?
1) Good adhesion: the coating and substrate are firmly combined.
2) Good flexibility: bending, rolling, stamping and deep drawing.
3) Good corrosion resistance: coating protects steel from corrosion.
4) Good wear resistance: the coating has good wear resistance and can be used for a long time.
5) Good weather resistance: the coating has good weather resistance and can withstand ultraviolet radiation, high temperature and rain.
What are the advantages of color coated steel?
There are many advantages of using color coated steel in construction and other projects. The most obvious benefit is the aesthetic attraction of materials. Color-coated steel can add a unique appearance to any project, and different colors can create interesting visual effects.
In addition to visual appeal, color-coated steel is also very durable. The coating protects the steel from corrosion and wear, and can also improve the service life of the steel. This makes it an ideal material for projects requiring long-term durability.
Color-coated steel is also easy to maintain. The coating does not need regular maintenance and can be cleaned with simple soap and water. This makes it an ideal material for projects requiring low maintenance costs.
In conclusion, color coated steel is the best choice for various applications. It is durable, easy to maintain, has a unique appearance, can enhance any project.
What are the disadvantages of color coated steel?
Color-coated steel has some disadvantages. One is that it may be more expensive than traditional steel. Another reason is that the color will fade over time, especially under direct sunlight or other strong light. Finally, color-coated steel may be more difficult to machine than traditional steel, because color will make it more difficult to see welds and other defects.
What are the coating methods of color coated steel?、
There are two ways of color coating steel: pre-coating and post-coating. Pre-painted steel refers to the paint that has been applied to the steel before it forms its final shape. Post-painted steel is the paint applied after the steel forms its final shape. Both types of color coated steel have their own advantages and disadvantages.
Pre-coated steel is more durable than post-coated steel because it is less likely to crack, flake or flake. It is also easier to clean and maintain because paint forms a barrier between metal and environment. However, pre-painted steel is more expensive than post-painted steel, and it is difficult to repair if damaged.
Post-painted steel is cheaper than pre-painted steel, and can be easily repaired if damaged. However, it is not as durable as pre-painted steel, and is easier to crack, peel or peel off. Since paint does not form a barrier between metal and environment, cleaning and maintenance are also more difficult.
Color-coated steel is a good way to add modern appearance to any building or structure. With its rich colors, finishes and coatings, you can customize the perfect color scheme according to your needs. Color-coated steel also provides excellent protection against the passage of air and light. It is durable, easy to maintain, recyclable and affordable – all these are important features of building durable structures in an environmentally friendly way.