Hot Rolled Aluminium Coil and Cold Rolled Aluminium Coil

The Difference Between Hot Rolled Aluminium Coil and Cold Rolled Aluminium Coil
 
The difference between cold rolled aluminum coil and hot rolled aluminium coil lies in the difference of the production process: cold rolled aluminum coil is made of casting and rolling machine to roll casting and rolling mill after processing; and the hot rolled aluminum coil is heated by aluminum ingot, melting at high temperature and cast into ingot after milling, homogenizing annealing after hot rolling mill and. Secondly, the supply of raw materials is different: the difference between them is different in the supply of billets, hot rolled aluminum coil billets are cast aluminium ingots, heated and rolled into rolls for rolling, the cold rolled aluminum coil is rolled by roll casting and cold rolled, In addition, due to the different production processes, the cold rolled aluminum coil and the hot rolled aluminum coil are different in performance: the quality of the hot rolled aluminum coil is good, and the mechanical properties and ductility are stronger, and the oxidation effect is good.



How do you distinguish between cold rolled aluminum rolls and hot rolled aluminum rolls? First of all through the visual judgment can be roughly, usually hot rolled aluminum coil surface brightness; secondly, through test elongation, elongation of hot rolled aluminum roll usually elongation than cold rolled aluminum volume rate should be high; furthermore through crystal like see the difference, hot rolling is processed through the organization of more than 90% thermal deformation, recrystallization and synchronization in hot rolling process, so the strip of fine grain, uniform performance, and cold rolled aluminum strip middle layer and a feather shape columnar distribution of casting structure.