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Metal Hot Rolling Mill Process Manufacturers

Metal Hot Rolling Mill Process Manufacturers

Rolling mill process of rolling and cold rolling two steps, the process is: First, hot-rolling process: From the steel mill Billet is still only semi-finished products, must go to the rolling mill after the rolling, to become eligible product. The continuous casting billet from the steelmaking...

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Rolling mill process of rolling and cold rolling two steps, the process is:

First, hot-rolling process: From the steel mill Billet is still only semi-finished products, must go to the rolling mill after the rolling, to become eligible product.

The continuous casting billet from the steelmaking plant is first entered into the reheating furnace, and then after the initial rolling mill is repeatedly rolled into the finishing mill. Steel rolling belongs to metal pressure processing, rolled steel plate like pressing noodles, through a rolling-pin multiple extrusion and propulsion, the more roll-out of the thinner. In the hot-rolled production line, the billet heating becomes soft, the roller is fed into the mill, and finally rolled into the user's required size. Rolling is a continuous operation, steel strip in the roller running speed, equipment automation is high, efficiency is also high. The ingot from the open hearth can also be steel plates.

After heating and the initial rolling billet can be sent to the hot rolling line for rolling, general continuous casting billet thickness of 150~250mm, first through the removal of phosphorus to the beginning of rolling, through the roller into the finishing mill, finishing mill by 7 4-roller mill consisting of a speed roller and fly shear, the machine before the head of the plate surface. Hot-rolled products are divided into steel coil and ingot two kinds, after hot-rolled steel rail thickness in a few millimeters, if the user requirements of the plate thinner, but also after cold-rolled.

Two cold rolling process: Compared with hot-rolled, cold-rolled mill's processing lines are scattered, cold-rolled products are mainly common cold-rolled plate, coated plate is also tin plating, galvanized sheet and color coated board.

After the hot-rolled steel coil, the first to undergo three consecutive technical processing, first of hydrochloric acid removal of the oxidation film, then can be sent to cold rolling mill. On the cold rolling mill, the unwinding machine opens the steel coil and then introduces the steel strip into the five rack tandem mill rolling into a thin strip coil. From the five rack out of the different specifications of the general steel coil, it is based on a variety of user requirements to process, to produce a variety of different quality products.

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