Hot Rolling Mill

Hot Rolling VS Cold Rolling What are the differences between hot rolling and cold rolling?  This is also a matter of concern. Although they are all rolled, they are still very different and applicable to different situations.  Therefore, it is necessary to analyze and introduce them in detail so that we can distinguish and use hot rolling and cold rolling. The specific analysis is as follows. The hot-rolled plate has low hardness, easy processing, and good ductility. The cold-rolled sheet has high hardness and relatively difficult processing, but it is not easy to deform and has high strength. The hot rolled plate has relatively low strength and poor surface quality, but good plasticity. It is generally a medium and thick plate. Cold-rolled plate: it has high strength, high hardness, and a high surface finish. It is generally a thin plate and can be used as a stamping plate. The mechanical properties of hot-rolled steel plate are far inferior to cold working and forging, but it has bet

Functions of Reheating Furnace Control System of Rolling Mill In order to make the statistical processing and high efficiency for quality operation management, a special database is compiled. The combustion control is carried out according to the secondary temperature distribution heat transfer model of the slab section. In rough and finish rolling, it is calculated based on the rolling quantity of each pass, The automatic rolling line is controlled by the rolling mill, the plane shape is controlled, and the accelerated cooling is determined according to the heating rolling temperature and processing history, but the dynamic cooling conditions are controlled.  The functions of the heating furnace control system are as follows: (l) Calculate the slab temperature in the furnace. Measure the slab temperature at the inlet of the heating furnace, and calculate the slab surface and internal temperature with the heat transfer model according to the corresponding heating history. (2) Combustio

Hot Rolling Process The semi-finished billet from the steelmaking plant is rolled to make it a qualified product. Introduction of Hot Rolling Process Process Flow of Hot Rolling: Process Flow of Main Rolling Line: The slab is directly sent to the slab warehouse of the hot rolling workshop from the slab discharging roller table of the continuous caster in the steelmaking and continuous casting workshop, and the directly hot charged slab is sent to the furnace loading roller table of the heating furnace for heating. The slab that cannot be directly hot charged is lifted into the insulation pit by the crane, then lifted to the upper material bench by the crane after insulation, and then heated by the furnace loading roller table of the heating furnace, leaving the possibility of direct rolling. The continuous casting slab is transported into the slab warehouse by the continuous casting workshop through the slab loading roller table or slab unloading roller table. Before the slab reaches t