Changsha Xiangjia Metal Materical Co., Ltd.

There are differences in the implementation of hot rolling and cold rolling of   spiral pipes . Both processes are used to form steel sections or plates and have a significant impact on the structure and properties of the steel. Typically, the rolling of steel is dominated by hot rolling, while cold rolling is mainly used for the production of fine-type sections and thin plates. During hot rolling, the casting organisation of the ingot can be destroyed, grain refinement can take place and microstructural defects can be eliminated, resulting in a dense steel structure and improved mechanical properties. This improvement is mainly reflected in the direction along the rolling direction, making the steel to a certain extent non-isotropic; at the same time, under high temperature and pressure, the casting of bubbles, cracks and loose parts can be welded together. Cold rolling is at room temperature, through cold drawing, cold bending, cold drawing and other cold processing of steel plat...

LSAW steel pipe  is widely used in our life, so do you know the difference between cold rolling and hot rolling in LSAW steel pipe?   Cold rolling is processed from hot-rolled sheets at room temperature. Generally speaking, it is process is hot-rolling-pickling--phosphating--saponification--cold rolling.   Hot rolling is hot working process. Hot rolling has many advantages such as high production efficiency, large scale, low energy consumption, low cost, high degree of mechanization and automation, so it is suitable for large-scale production. The difference between cold rolling and hot rolling LSAW steel pipe: 1. Cold-rolled section steel allows local buckling of the section, so that the bearing capacity of the member after buckling can be fully utilized, while hot-rolled section steel does not allow local buckling of the section. 2. The reasons for the residual stress of hot-rolled steel and cold-rolled steel are different, so the distribution on the cross-section is al...