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Detail introduction of hot dip galvanized steel coil
Everyone knows that in our lives, we often use some metal parts and products, which can be said to be a good application of industrial products in life. Among these galvanized products, hot dip galvanized steel coil is still very popular, so how much do you know about hot dip galvanized steel coil? Below, hot dip galvanized steel coil supplier Hengze New Material Co., Ltd. introduce it to everyone.
The method of using this product of galvanized steel coil is very convenient. So as to ensure that we can easily understand the use of it in daily use, which makes it easy for him to enter the use of thousands of households. And it’s the surface is still very smooth, and the uniformity of the galvanized layer indicates that it’s galvanizing can effectively function in use. So we can guarantee that the performance of the use is perfect. To a certain extent, the use of galvanized steel pipes is very extensive. Whether it is planted in greenhouses or installed, or inbreeding farms, it can be seen, so it has been widely welcomed.
How to judge the rust resistance of hot dip galvanized steel coil?
Hot dip galvanized steel coil is a semi-finished material that is used in many industries and fields. The reason why galvanizing is mainly to give the material excellent anti-embroidery and anti-corrosion properties. To improve the overall performance of the finished product and to have a longer service life, and to adapt to more different environments. So, how to judge the rust resistance of galvanized steel coils?
Galvanized steel coils are also classified as cold-rolled or hot-rolled in the same way as other steels. In terms of price, the cost of cold-dipping is lower and the price is also lower, but its rust and corrosion resistance is poor. If the performance requirements are high, the hot dip material must be selected. Although the price is relatively high, the performance is better and the quality is more stable. It is used for production and production, and the quality of the finished product is more reliable and the service life is longer. This is because the hot dip method is more complicated. There are physical changes and chemical changes in the project. The coating texture is more uniform and stable, so the adhesion is stronger. It is easy to fall off without cold soaking, and the material itself is also higher. The toughness and strength are not easy to break during processing, reducing the loss of materials.
The properties of the material are also related to the thickness of the zinc layer. Generally, the materials commonly used in the market are classified according to the amount of galvanizing. The corresponding materials should be selected according to the actual situation. Although theoretically, the thicker the zinc layer, the higher the rust resistance, but It is not necessary to pursue the ultimate, as long as it can meet the requirements.
How to check the channel zinc ingot of hot dip galvanized steel coil?
1. Surface quality. hot dip galvanized steel coil no holes, shrinkage holes, interlayers, scum, and foreign matter are allowed on the surface. But natural oxide film is allowed.
2. Chemical composition. For each batch of zinc ingots, 6~20 pieces are taken at equal intervals, and the sampled ingots are grouped. The maximum number of ingots per group is 10. The ingots are placed side by side according to the long side. One casting surface faces upward, and the second fast casting surface faces downwards. Which are alternately arranged in a rectangular shape, and two diagonal lines are drawn on the rectangle. Then, the surface of each zinc ingot is equally divided into the number of ingots and the equal parts of L. Draw a bisector parallel to the length of the ingot. The intersection of the bisector and the diagonal is the location where the hole is sampled. That is, the first zinc ingot is drilled at the intersection of the first bisector, and the second zinc is drilled. The ingot is drilled at the intersection of the second bisector, and so on.
For the sampling of drill bits with a diameter of 10~15mm, no lubricant should use for drilling. The drilling speed should not be oxidized by the cuttings. The surface cuttings should be removed and the drilling depth should be no less than one-third of the thickness of the sample. Reduce to 2mm or less, mix evenly, and remove the iron with a magnet for chemical analysis.
How to clean hot dip galvanized steel coil?
I believe that you know that some oil, iron powder and dust on the surface of galvanized steel coils will affect the quality of galvanized steel coils. Therefore, it is necessary to clean hot dip galvanized steel coil. hot dip galvanized steel coil cleaning the method generally includes: alkali washing, lye dipping, electrolytic cleaning, hot water rinsing, etc.. And the cleaning method can control the total amount of residual oil and residual carbon on the surface of the galvanized steel coil to be very low, and during cleaning. The surface of the galvanized steel coil is also ground, which will also improve the adhesion of the strip surface to a certain extent, so hot-dip galvanized steel coil cleaning is very necessary.
Maintenance of Hot dip galvanized steel coil
For the maintenance of galvanized steel coils is a very simple but very important task. If you do this work, you can easily extend the life of the product, and the maintenance method is better than the failure to repair or replace it. Conducive to the operation of the machine.
In a normal working environment, the galvanized layer of hot dip galvanized steel coil can be safely used for 30 years. This is a hot-dip galvanized sheet using the anodic protection principle of the iron matrix. This allows the pure zinc layer to form a dense protective film in the atmosphere to prevent zinc corrosion. However, in the case of a humid environment, we must pass the asphalt or seal to isolate the direct contact between the medium and the zinc layer to prevent the galvanized layer from corroding and perforating.
The galvanized steel coil is used to prevent the surface of the steel sheet from being corroded and prolonged. The service life of the steel sheet is coated with a layer of metal zinc. The zinc-coated steel sheet is called a galvanized sheet. Understand that these maintenance methods can help the function of galvanized steel coil products. And ensure the long-term use of galvanized steel coils in the life of the galvanized steel coils in order to ensure the long-term use of our products.