Packaging steel strip pickling operation profile

Packaging steel strip pickling hot-rolled coil is operation of cold rolled billet. Because of hot rolled plate roll finishing temperature about 800 ℃ or more generated on the surface tin oxide. Cold rolled steel strip is one of the goals in order to get until the good surface properties. Before the cold rolling to remove oxide, this is the first purpose of pickling homework, pickling task sums up as follows: 1. Remove surface oxidation iron has physical (except the surface oxidation iron Mechanical) Method and chemical method. For the processing of cold rolled billet, is commonly used to increase the surface properties of the chemical method, which adopts the pickling method. The acid with hydrochloric acid, sulfuric acid as most, recently, most use hydrochloric acid production line. Processing time is short, its quality also good. Is given priority to with chemical method, physical method as the auxiliary pole, with the two methods. Volume 2, plate, large scale to the next working procedure, the improve the operation efficiency, improving yield, more efficient use of storage sites of the factory, the hot rolled plate volume 2 - Three methods of welded together to increase cold rolled plate, shows its effect on instances. Commonly used welding machine operation time is short, the welding part of 凼 flash butt welding machine. 3. Lubricating oil is for the purpose of rust, prevent scratch and assist when rolling lubrication, in advance after pickling of strip steel coated with a layer of oil. 4. Disc type cutting machine ( Trimming) according to the order be beg for shearing strip width. And in order to avoid rolling accident caused by the width of the hot rolled plate volume change and carries on the cutting edge. 5. Hot rolled plate volume character management of hot-rolled coil properties ( Surface defects, and flatness. Roll, etc. ) Inspection, is in order to improve the quality of raw material plants, thus improve the quality of the finished product. Pickling line between hot rolling process and cold rolling process, on the quality management of each other, can be a very important line.