Two different technical processes for the production of Aluminium sheet
First of all, most customers who have experience in sourcing sheet metal materials from China should know that there are differences in the performance and price of the finished product caused by the difference between two different fabrication processes, mainly for series 1xxx and series 3xxx. For the finished products of series 1xxx and 3xxxx, what we should compare is not the difference between the fabrication process of hot rolling and cold rolling, but the fabrication process of finished products of hot rolling and cast rolling.
1. Different forming process
Casting-rolled is processed by casting & rolling into cast roll (6-8mm thickness) and then processed by cold rolling line, while hot rolling is heated by aluminum alloy billet (400-500mm thickness), which is rolled by hot rolling mill.
2. Different raw material supply
the difference between the two is that the billet supply is different. The hot-rolled billet is cast aluminum ingot–heated–rolled into a coil for cold rolling, and the cast billet is cast rolled coil–cast rolling.
3. Different properties
the surface quality of the hot-rolled aluminum sheet is better, and the mechanical properties and ductility are stronger, which is suitable for the anodized and deep drawing fabrication process
4. Different applications
casting-rolled aluminum metal sheets are mostly used for building decoration and other common civilian purposes. Hot-rolled aluminum metal sheets are suitable for areas requiring deformation of the plate surface such as stamping and stretching.
5. Different prices
the process of casting-rolled aluminum sheet metal is simple, and the price is cheaper than that of hot-rolling aluminum sheet metal.
6. Different finished products
the elongation of the casting-rolled products of the same alloy grade is lower than that of the hot-rolled products, and the cast-rolled products are limited by the rolling force of the casting & rolling machine and can only produce Aluminum metal sheets of series 1xxx, 3xxx and 8xxx.