Buy hot rolled steel tube pipe Factory Quotes
Buy hot rolled steel tube pipe Factory Quotes
Hot rolled tube (hot tube) refers to the pipe produced by the hot rolling process, is a common mechanical structure. Hot rolling refers to rolling performed at a temperature higher than the recrystallization temperature. The hot rolling process can significantly reduce energy consumption and reduce costs. The metal has high plasticity and low deformation resistance during hot rolling, which greatly reduces the energy consumption of metal deformation, and can improve the processing performance of metals and alloys, that is, the coarse grains in the as-cast state will be broken, and significant crack healing will be achieved, reducing or eliminating casting defects , The as-cast structure is transformed into a deformed structure, and the processing performance of the alloy is improved.
For hot-rolled steel pipes, hot rolling is relative to cold rolling. Cold rolling is rolling below the recrystallization temperature, and hot rolling is rolling above the recrystallization temperature. It can destroy the casting structure of the steel ingot, refine the grains of the steel, and eliminate the defects of the microstructure, thereby making the steel structure dense and improving the mechanical properties.
Disadvantages of hot rolled tubes: residual stress caused by uneven cooling. Residual stress is the internal self-phase equilibrium stress without external force. Hot-rolled sections of various sections have such residual stresses. Generally, the larger the section size of the section, the larger the residual stress. Although the residual stress is self-balanced, it still has a certain effect on the performance of steel members under external forces. For example, it may have adverse effects on deformation, stability, and fatigue resistance.