When talking about color steel roof tiles, many customer friends will think that they are all the same. They are all made of a layer of iron. What can be different, but for those who know color steel tiles well, you need to pay attention to purchasing color steel tiles. There are many things, and there are many secrets in the color steel tile industry. After you have been in contact with the color steel tile industry for a long time, you will find out why some color steel tiles that look the same on the surface can still be used for 30 years In the same way, some color steel tiles have peeling, discoloration, and rust after using for about a year. After a few years of use, two different color steel tiles are compared, and it can be clearly seen. gap between the two. Why is this?
Specifically, we will explain why the color coated roofing sheets supplied by Win Road International Trading Co.,Ltd can be used for 30 years without fading, and some color steel tiles will fade after one year of use.
First of all, let's get to know the color steel tile. The color steel tile is made of color steel plate through a pressing machine to be pressed into various types of tiles for the factory floor, or for wall enclosures, single color and single laminate. Because of its bright and customizable colors, many factory buildings will choose color steel tiles for simple installation. Next, let's take a look at why some color steel tiles do not fade after 30 years of use.
Generally, color steel tile substrates are galvanized substrates. If customers have special requirements to use galvalume substrates, they can also be customized. Under normal circumstances, the thickness of the substrate is 0.02mm-0.05mm. Under normal circumstances, the zinc content of the substrate will directly affect the The rust degree of color steel tiles, the most common zinc content of color steel tiles pressed by Win Road International Trading Co., Ltd is 120g. The higher the zinc content, the higher the rust resistance.
2. Paint film of color steel tile;
①The thickness of the paint film;
Under normal circumstances, it is not that the thicker the thickness of the paint film, the better. I believe everyone should understand that the thickness of the general paint film is ≤ 0.15mm;
②The degree of curing of the paint film;
The curing degree of the paint film directly affects whether the paint film of the color steel tile will deform and fall off when it is subjected to external force. This is one of the key factors. The paint film itself is one of the key factors to protect the color steel tile from rusting. Once the paint film falls off, the color steel tile will rust immediately. We once did an experiment to verify the T-bend experiment of the color steel tile paint film curing. Under the same conditions, the color steel tile was folded in half. In the T-bend experiment, one fold is 0T, two folds are 1T and so on. After 3T, our color steel tile did not show any cracking phenomenon under the microscope, which means that the color steel tile has a very high degree of curing. it is good.
The adhesion of the paint film directly affects whether the color steel tile will fall off after a period of use. We mentioned above that the paint film is the key factor to protect the color steel tile from rusting. The adhesion of the paint film is also important. The adhesion of the paint film is specially made a "color-coated board organic solvent wiping experiment". Under all the same conditions, use an organic solvent such as methyl ethyl ketone to regularly wipe the color-coated board paint layer with cotton cloth, how much The paint film can be completely wiped off. The paint film of the products we offer will only be removed when the number of wipes is greater than 100 times.
The purpose of this experiment is to test the adhesion of the paint film of the color-coated sheet, that is, the color paint film of our common color steel tile will fall off and rust after a period of use.
The color-coated steel coils used for color steel tiles uses a substrate with sufficient zinc content. Whether it is the curing degree of the paint film or the adhesion of the paint film, it will only leave the factory after professional and strict experimental verification. The color steel tile produced in this way can be Commitment to customers to use for 30 years without fading and rust.
Post time: Jun-01-2022