What is the cold drawing deformation and heat treatment of Q235B steel plate?

Cold tensile deformation of Q235B steel plate can improve the compressive strength and improve the anti-deformation working ability. On the contrary, the aging treatment of protective gas heating and heat treatment at the temperature of 1050 degrees can become looser.

Heat treatment process: heat treatment process is the metal composite material into a certain substance heating, heat insulation, cooling, according to the change of the surface or internal alloy composition structure of the raw material, to manipulate its characteristics of a metal material hot processing. Sometimes it's just heating and cooling.

Q235B steel plate surface quality, the key lies in Q235B steel heat treatment process and pickling passivation process, if the heat treatment process generated by the scale of its thickness is not well-balanced, thick and thin areas basically metal surface Smoothness is different, the acid pickling passivation process is not can improve the smoothness of the surface,
Therefore, in order to control the surface quality of Q235B steel plate, it is necessary to strictly control the heat treatment process and pickling and passivation of these two procedures.