Hot rolling and cold rolling/hot rolling of stainless steel: relative to cold rolling, cold rolling is rolling at a recrystallization temperature below I2M, and hot rolling is rolling at a temperature above the recrystallization temperature. Its characteristics: 1. Poor toughness and surface flatness, low price: 2. The temperature of hot rolling is similar to the temperature of forging: 3. The hot plate is processed by hot rolling, the surface has oxide scale, and the thickness of the plate has the following difference: 4. Because of its The production process makes it more civil, such as tableware and kitchen appliances, general household appliances, etc.: 5. Hot-rolled steel plate, mechanical properties are far inferior to cold processing, and also second to forging processing, but have better toughness and ductility. Cold rolling: It is processed and rolled on the basis of hot-rolled coils. Generally speaking, it is a process of hot rolling, pickling and cold rolling. Although the rolling process will also increase the temperature of the steel plate, nevertheless Still called cold rolling. Because the hot rolling undergoes continuous cold deformation and cold rolling, the mechanical properties are relatively poor, and the hardness is too high. It must be annealed to restore its mechanical properties, and those without annealing are called rolled hard coils. Rolled hard coil is generally used to make products without bending and stretching. Its characteristics: 1. Cold-rolled steel sheet has a certain degree of work hardening, low toughness, and expensive price: 2. Cold-rolled surface has no oxide scale, and good quality: 3. The product made by cold deformation has high dimensional accuracy and surface quality. Good: 4. Cold rolling is widely used in various industries due to its production technology, such as various types of cold stamping parts, cold rolled cold extruded profiles, cold coil springs, cold drawn wires, cold emblem bolts, etc.