Manufacture steel strip production process

Strip production process and the technological process in product manufacture is closely linked, with the requirements of different product process is different. Manufacture steel strip products on hot rolled strip steel as raw material, because its surface has tin oxide, so before the cold rolling to get rid of iron oxide, pickling in cold rolling production first processes. After pickling rolling, rolling, to a certain thickness due to the strain hardening steel strip, require intermediate annealing, to soften the strip. Annealing before due to the strip surface have a lubricating oil, must put oil clean, otherwise in the annealed strip surface staining, causing surface defects. After degreasing of strip steel, in the generation of a protective gas furnace for annealing. After annealing of steel strip surface is bright, therefore, when further rolling and level off, without pickling. After strip rolling to the required size and precision, usually for a final annealing, to obtain smooth bright and clean surface, and uniform thickness and adjust the mechanical properties should pass is flat and level. Strip after the flat, to shear according to orders. Into a delivery to cross-cutting, when necessary to slitting roll delivery. Above all, general purpose manufacture steel strip production process are: pickling, cold rolling, annealing and leveling, shearing, defect inspection, classification, gradation and product packaging. Manufacture steel strip product is extremely widespread, its representative products are metal coating plate ( Tinplate, galvanized sheet, etc. ) Deep drawing steel sheet ( Car plate, etc. ) , electrical silicon steel plate and stainless steel plate, etc. Reversing cold rolling unit composition and the process of reversing cold rolling operation unit is composed of four parts: plate coil conveyer decoiling equipment, rolling mill, before and after the crimping machine, ejecting device and steel volume collection equipment. Plate coil conveyer is generally chain or walking beam type, the uncoiler is of cone type. Strip to the mill, machine crimping machine before biting strip steel of the head, and then start the first rolling. After rolling the first line, steel strip tail bite into the mill after crimping machine, under the direction of rolling mill conversion start rolling. And so it shall be carried out in accordance with the rolling schedule reciprocating, until the thickness of the rolling requirements. Reversing mill rolling are generally, passes out of the finished product. Discharge volume by discharging coil car. Coil collecting device for a ramp or discharging walking beam.