The pickling plate is made of high-quality hot-rolled sheet as raw material. After the pickling unit removes the oxide layer, trims the edge, and finishes, the surface quality and use requirements (mainly cold-rolled forming or stamping performance) are between hot-rolled and cold-rolled. The intermediate product between plates is an ideal substitute for some hot-rolled and cold-rolled plates.
1. Advantages of pickling board
① Compared with hot rolled sheet
1) The surface quality is good, because the hot-rolled pickling plate removes the surface oxide scale, which improves the surface quality of the steel and is convenient for welding, oiling and painting.
2) The dimensional accuracy is high. After leveling, the plate shape can be changed to a certain extent, thereby reducing the deviation of unevenness.
3) Improve the surface finish and enhance the appearance effect.
4) It can reduce the environmental pollution caused by the user's scattered pickling.
② Compared with cold rolled sheet
The advantage of pickling board is that it enables users to effectively reduce purchase costs on the premise of ensuring the surface quality requirements.
At present, many enterprises put forward higher and higher requirements for high performance and low cost of steel. With the continuous improvement of steel rolling technology, the performance of hot-rolled sheet is approaching that of cold-rolled sheet, so that "replacing cold with heat" can be realized technically. It can be said that the pickling plate is a product with a relatively high performance-price ratio between cold-rolled plate and hot-rolled plate, and has a good market development prospect.
2. Pickling board market
The pickling plate market is mainly reflected in the following four aspects: replacing cold rolling, replacing hot rolling, replacing imports and replacing small pickling. Among them, import substitution and small pickling are actually existing markets, and the market is limited and it is impossible to completely replace them. With the rapid development of automobile, machinery, light industry and other industries, enterprises are facing the huge pressure brought by the market competition, and the requirements for product cost and product quality are increasing day by day. Plates and hot plates will gradually be recognized by users.
3. The main process of hot-rolled pickling plate
The main processes of hot-rolled pickled plates include laser welding, position stretching and straightening, turbulent pickling, online leveling, edge trimming, and online oiling, etc. Baosteel pickling specifications are generally 1.0-6.1*800-1650mm. Products include low-, medium-, and high-strength grades of steel for stamping, steel for automotive structures, etc., and are mainly delivered in the form of steel coils.
Process features:
The iron oxide scale on the hot-rolled steel plate is removed with hydrochloric acid to obtain a beautiful and smooth surface.
Features:
① Cost reduction, replacing cold-rolled sheets with pickled sheets can save costs for enterprises.
② The surface quality is good. Compared with ordinary hot-rolled sheets, hot-rolled pickled sheets have removed surface oxide scale, improved the surface quality of steel, and are convenient for welding, oiling and painting.
③ The dimensional accuracy is high. After leveling, the plate shape can be changed to a certain extent, thereby reducing the deviation of unevenness.
④ Improve the surface finish and enhance the appearance effect.
