In this science article, I will give a brief introduction to hot rolled steel sheets.
Initially, priority should be given to explain what is the hot rolled steel plate. The straight hair volume by cutting the head, cutting tail, cutting edge and many times of straightening, leveling and other finishing line processing, and then cut plate or re-roll, that is, become: hot-rolled steel plate, flat hot-rolled steel coil, longitudinal strip and other products. If the hot-rolled finishing coil is pickled to remove oxidation and oiled, it becomes a hot-rolled pickled plate coil. The product has a partial replacement of cold-rolled plate tendency, the price is moderate, loved by the majority of users.
Additionally, the process of making hot rolled steel is roughly the same. With continuous casting slab or primary rolling slab as raw materials, heated by the step heating furnace, high-pressure water descaling into the roughing mill, rough rolling material by cutting the head, tail, and then into the finishing mill, the implementation of computer-controlled rolling, final rolling that is after laminar cooling (computer-controlled cooling rate) and winding machine rolled, become straight hair volume. Straight hair volume of the head, tail is often tongue and fish tail, thickness, width accuracy is poor, the side often exists wave-shaped, folded edge, tower-shaped and other defects. Its volume weight is heavier, steel volume internal diameter of 760mm.
In fact, hot rolled steel plate is very close to our lives. The most common is the stainless steel sheet we normally use. Stainless steel has good corrosion resistance and is mainly used in the food industry, surgical equipment, aerospace, petroleum, chemical and other industries with good ductility. The strength of hot-rolled plate is relatively low, the surface quality is poor (oxidation and low finish), but the plasticity is good, generally for the thick plate, cold-rolled plate: high strength and high hardness, high surface finish, generally for the thin plate, can be used as a stamping plate.