Baotou steel belt, packing sheet, packaging steel strip production technology

Baotou steel belt, packing sheet, packaging steel strip production technology. 1. Continuous pickling continuous pickling is rolled the hot rolled plate continuously through salt acid tank or sulfur acid tank to remove oxide on the surface of the sheet metal process, in addition, in order to improve the processes behind the operation efficiency and yield, rolled the several hot rolled plates welded together, roll into a large plate. 2. Cold rolling mill is at room temperature, the thickness of hot rolled plate roll rolling to the finished product equipment of rolling oil, both as a lubricant between roll and strip, and when the roll coolant. Usually is to use more than four roller frame continuous ( Tandem mill) And single stand reversing cold rolling mill. The former is used for high efficiency and big production varieties; The productivity is low, suitable for many varieties, special material. 3. Electrolytic cleaning electrolytic cleaning is to remove residual after cold rolled steel sheet on the surface of the rolling oil process, in the process of strip steel continuously through the electrolytic cell, using electrolytic degreasing cleaning. 4. After annealing for cold rolling of crystal structure, high hardness, poor processability, so through recrystallization annealing process, improve its crystal structure, annealing is one of the larger process, affect the cold rolled strip steel performance was decided according to the specifications of the finished product, USES, annealing ( Tight, loose volume) And annealing system ( Annealing temperature and annealing time, heating rate, etc. ) 。 5. Smooth rolling to slightly cold rolling strip steel after annealing, eliminate the yield platform at the same time improve the straightness of the finished product, control of surface roughness, the purpose of these is flat. 1 - planishing mill adopted 2 four high rolling mill, usually under pressure rate is about 1%. 6. Finishing in the last line of cold rolling process of shear line or on line, trimming, shear, volume classification, etc. , to obtain the required product size, at the same time, the size, surface, shape of inspection, after inspection, besmear antirust oil, become a finished product.