Q195 galvanized steel plate, is it hot or cold?
Cold rolling mill for rolling power, low efficiency, and the rolling process in order to eliminate work hardening and annealing, so the cost is higher, but the cold rolled steel surface bright, good quality, can be directly used for processing products, it is ten points wide application of cold rolled steel plate.
The difference between cold rolling and hot rolling is not in the smelting process, but in the temperature at which the steel is rolled, or the temperature at which the steel is rolled. When the final rolling temperature is lower than the recrystallization temperature of steel, it becomes cold rolled steel. Hot rolled steel is easy to roll and has high rolling efficiency, but the steel is oxidized under hot rolling and the surface of the product is black and gray.
Q195 galvanized steel sheet, the substrate may be hot-rolled, or may be cold-rolled.Cold rolled coil is rolled and rolled on the basis of hot rolled coil. Generally it is the process of hot rolling, pickling and cold rolling.
