Packaging steel strip pickling line introduction to the task

The task of packaging steel strip pickling line of cold-rolled hot-rolled coil is blank. Because of hot rolled plate roll finishing temperature about 800 ℃ or more generated on the surface tin oxide. Cold milk strip one of the goals is to get a good surface properties. Before the cold cream to remove oxide, which is the first purpose of pickling assignments. 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. Also has is given priority to with chemical method, physical method as the auxiliary pole, with the two methods. 2. Plate and enlarged volume in order to improve the operation efficiency and improve the yield in the next two tao work jin, 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. Commonly used welding machine operation time is short, strong flash butt welding machine welding parts. 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 requirements of order to shear of 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, shape, volume, etc. ) Inspection, is in order to improve the quality of raw materials, and 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.