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Galvanized Coil after Cold Rolling

2023-09-11

Galvanized coils for electronics and household appliances and other areas. There are also chassis with this, but hot-dip galvanized sheet does not emit radiation. The sheet on the back of air conditioners, refrigerators, microwave ovens and similar appliances is hot-dip galvanized sheet. Most of the household chassis with this, because the electroplating and hot plating process is different, so the zinc plating has the function of radiation protection. Household appliances use more.

According to the production and processing methods can be divided into the following categories: hot dip galvanized steel. A thin steel sheet in which a layer of zinc is adhered to the surface by immersing the sheet in a molten zinc bath. Using equipment to cut the galvanized coil into sheets only, using a forklift or aerial crane to put the galvanized coil on the shelf then through the equipment transfer, flattening, shearing and become. It is also called cold hardened coil.

In practice, we usually refer to the steel coils that have been processed after cold rolling and the next process as cold rolled coils. The use of galvanized steel as a substrate for the color coated steel plate, in addition to zinc protection, zinc layer on the organic coating plays a role in covering the isolation, which can prevent the steel plate from rusting, the service life is longer than galvanized steel, it is reported that the service life of the coated steel plate is longer than galvanized steel by 50%. Made of color coated steel buildings or plants, often subject to rainwater washing longer service life, otherwise, due to the role of sulfur dioxide gas, salt and dust and affect the use.

Therefore, when designing, if the roof has a greater inclination, the less likely it is to accumulate dust and other dirt, and the longer its service life; for those areas or parts that are not subject to frequent rainwater flushing, they should be flushed with water on a regular basis. The organic coating on the zinc layer plays a role in covering the isolation, which can prevent the steel plate from rusting, and the service life is longer than that of galvanized steel, and it is reported that the service life of coated steel plate is 50% longer than that of galvanized steel.

Due to the action of sulfur dioxide gas or salt in the air, the corrosion rate is accelerated and the service life is affected. In the rainy season, the coating is wet by rain for a long time, or in the day and night temperature difference is too big and easy to condensation parts, will be corroded faster, the service life will be reduced.

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What are the properties of color coated coils in applications?

2023-09-11