The hot rolled steel sheet or steel strip is generally referred to as a hot rolled steel sheet
. Hot rolled sheets have these characteristics compared to other steel sheet processing industries. Low hardness and easy processing. Compared with other steels that require special mechanical equipment, hot-rolled steel is a very convenient steel. Good plasticity, not easy to break, good pressure resistance and long service life. The manufacturing process is simple, and the cost of hot rolled steel sheets is relatively low compared to others.
Hot rolled steel has low strength, is easy to produce and process, and has good plastic properties. The cold-rolled steel sheet has high strength and is relatively difficult to produce and process, but it is not easy to deform and has high compressive strength. Hot-rolled steel sheet has relatively low strength, poor surface quality (oxidation and smoothness), but good plasticity, generally medium and heavy plate, cold-rolled steel sheet: high strength, high hardness, high surface smoothness, generally thin sheet, available Used as a stamping plate.
The mechanical properties of hot rolled steel sheets are far less than cold work and forging, but have better toughness and ductility. Cold-rolled steel sheets have lower toughness due to a certain degree of work hardening, but can achieve a better yield ratio for cold-formed spring sheets and other parts. At the same time, the yield point is close to the tensile strength, and the danger cannot be foreseen during use. When the load exceeds the allowable load, it is prone to accidents.
In the steel plate market, it is often more than the price, but after all, the wool is on the sheep, and the steel plate manufacturers with different price differences have a certain relationship, depending on the quality of the steel plates they manufacture.