In hot rolling a knowledge of the influence of the starting stock surface condition, surface condition of the rolls and lubrication used has been necessary, as have the effect of corresponding parameters in the cold mill with the full understanding of the effect of roll coatings, arcs of contact, etc., achieved by very detailed study.
Hot rolling is to heat a hot aluminum ingot called billet(400-500mm thickness) into thin aluminum sheet at high temperatures by the hot rolling line.
Hot rolled billets which are made from heating casting aluminum ingots, are rolling rolls for cold rolling.
According to different production process, the aluminum can be divided into cold rolling aluminum and hot rolling aluminum. The different between them are as follows:
Cold rolled aluminum sheets are widely used for moulds, constructions, traffic signs, etc,the cold-rolling of metals has played a major role in industry by providing aluminium sheet,aluminium strip,aluminium foil with good surface finishes and increased mechanical strength with close control of product dimensions.The sheet is cut by advanced machine and it is flat and accurate size. The aluminum Is protect by PE film. When shipping, we offer wooden pallet for easy unloading.
The different performance about hot rolled and cold rolled aluminium sheet:
The hot rolled aluminum sheet is better at surface quality, oxidation effect, mechanical properties and ductility than cold rolled aluminum sheet. At the same time aluminum circles are generally made from aluminum sheets, so they’re also affected by the performance of aluminum sheets.