What are the main differences between hot rolling and cold rolling?

            Hainan Futong Steel Sales Co., Ltd. has long been specializing in the steel business. Hot rolling and cold rolling are both forming processes for section steel or steel plates, which have a significant impact on the microstructure and properties of steel. Steel rolling is mainly dominated by hot rolling, while cold rolling is only used for producing small-sized section steel and thin plates. Today, Hainan Futong Steel will share with you the main differences between hot rolling and cold rolling:

1. Cold-formed steel allows local buckling to occur in the cross-section, thereby making full use of the load-bearing capacity of the member after buckling; whereas hot-rolled section steel does not allow local buckling to occur in the cross-section.

2. Hot-rolled section steel has higher free torsional stiffness than cold-formed section steel, so the torsional performance of hot-rolled section steel is superior to that of cold-formed section steel.

3. The causes of residual stresses in hot-rolled section steel and cold-formed section steel are different, so their distribution across the cross-section also differs significantly. The residual stress distribution on the cross-section of cold-formed thin-walled section steel is of a bending type, while the residual stress distribution on the cross-section of hot-rolled section steel or welded section steel is of a membrane type.http://www.hnftsteels.com

              Hainan Futong Steel mainly deals in the following products:angle steel, square hollow sections, flat hollow sections, channel steel, H-beam steel, I-beam steel, C-channel steel, flat steel, round steel, galvanized water pipes, galvanized angle steel, galvanized square hollow sections, galvanized round steel, galvanized channel steel, galvanized steel sheets, steel plates, cold-rolled sheets, color-coated roofing sheets, foam sandwich panels, electrolytic sheets, checkered plates, floor decking, seamless pipes, welded pipes, scaffold tubes, steel-plastic pipes, spiral pipes, expanded pipes, square steel, cold-drawn steel, color-coated steel sheets, galvanized flat hollow sections, galvanized flat iron, and embedded parts.