High-quality structure steel cold-rolled flat steel (YB/T 037-93)
High-quality structure steel cold-rolled flat steel (YB/T 037-93) refers to a high quality forming and welding structural steel with a carbon content not exceeding 0.22% and a phosphorus content not exceeding 0.04%. It is mainly used in the manufacture of various mechanical parts and components, which require good comprehensive mechanical properties, weldability and cold forming performance, such as axle shafts, carburizing parts, construction machinery, cold stamping parts, jack components and structural frames, etc.
The high-quality structure steel cold-rolled flat steel (YB/T 037-93) is hot-rolled flat steel of various grades that has been pickled and cold-rolled through the medium of high-pressure medium-pressure plate-leveler. The steel plate is mainly subjected to dephosphorization after acid cleaning, and a certain amount of calcium, aluminum and other unmodified elements are added for crystallization plasticization (YB/T 391-94). By means of deep utiiization, combined production of steel and steel plates, strong conversion of basis and improvement of finish, refined inspection of plate gapping and non-destructive testing, superior product performance is greatly secured.
The chemical composition elements of high-quality structure steel cold-rolled flat steel (YB/T 037-93) are mainly carbon, phosphorus, sulfur and other trace elements. The carbon content should not be greater than 0. 22%, the phosphorus content should not be greater than 0.04% and the sulfur content should not be greater than 0.04%. This kind of steel has high strength, good plasticity and weldablity, good work hardening properties, and the mechanical properties of products can be improved through heat treatment and cold deformation.
In addition, the alloying elements of high-quality structure steel cold-rolled flat steel (YB/T 037-93) can also be added according to users requirements. Low-alloy elements such as molybdenum, vanadium, titanium and nickel can be added, and alloy elements such as chromium, copper and niobium can be added to some special steels to enhance the mechanical properties and comprehensive properties of the material. Residual elements such as S, P, Cu, Cr, Mn and Ti can have a great impact on the performance of steel products, so their contents should be strictly controlled.
Generally speaking, the stability of high-quality structure steel cold-rolled flat steel (YB/T 037-93) products is good, and the process performance is good. It has few surface flaws, good resistance to low temperature impact, good dimensional stability, strong heat fatigue resistance and good weldability, which can be used in a variety of fields. In particular, this kind of steel has excellent comprehensive mechanical properties, so it can be used to manufacture mechanical parts, welded structures, pipelines and vessels which require higher mechanical properties. The high quality cold-rolled flat steel (YB/T 037-93) produced by professional enterprises such as Baosteel is considered one of the best high-quality structure steel.
