wholesale cold tandem mill
|Cold tandem rolling is a hot rolled coil as raw material, the removal of oxidized skin by pickling. The finished product is rolled hard rolls, because the cold-making hardening of continuous cold deformation causes the strength, hardness rise and ductility index to decrease, so the stamping performance will deteriorate and can only be used for simple deformed parts. Rolled hard coils can be used as raw materials for hot galvanizing plants, because the hot Dip galvanized unit is set with annealing line.
General cold tandem rolling plates, coils should be continuous annealing (CAPL unit) or furnace annealing to eliminate cold-rolled hardening and rolling stress, to achieve the corresponding standards of mechanical performance indicators.
Cold-rolled steel plate surface quality, appearance, size accuracy is better than hot-rolled plate, and its product thickness can be thin to around 0.18MM.
To steel rolling rolls for the substrate to carry out the deep processing of products, to become high value-added products. such as galvanized zinc, hot dip galvanized, and fingerprint zinc plating, color coated steel plate and damping composite steel plate, PVC laminating steel, so that these products have beautiful, high-corrosion resistance and other excellent quality.wholesale cold tandem mill