The difference between cold and hot rolled aluminum sheets
Addtime: 2018-08-24 16:05:00
There are difference between hot rolled aluminum sheet and cast aluminum sheet (also known as cold rolled aluminum sheet): Cold-rolled aluminum sheets are also called cast-rolled aluminum sheets. The difference between cold-rolled aluminum sheets and hot-rolled aluminum sheets is in terms of price, billet supply, production process, performance, use, and finished products.
1. Price: The cold rolled aluminum sheet is simple in process and the price is cheaper than the hot rolled aluminum sheet.
2. The billet supply is different: the difference between the two is different in the billet supply.
Hot rolled material: aluminum ingot--melting and casting into flat ingot--milling surface--homogeneous annealing--hot rolling into strip
Casting and rolling: aluminum ingots - smelting - rolling into strips by a caster.
Compared with casting, the production efficiency of castings is high, but defects such as composition segregation and inclusions are not easy to solve, and the quality is not as good as hot rolling;
3, the production process is different: cold rolling is processed by a casting mill into a cast roll (8mm thickness) processed by a cold rolling mill, while hot rolling is an aluminum plate ingot (400-500mm thickness) heating, heat at high temperature Rolling mill rolling;
4. Different performance: the surface quality of hot-rolled aluminum sheet is good, and the mechanical properties and elongation properties are strong, and the oxidation effect is good;
5. Different uses, cold-rolled aluminum sheets are mostly used in molds, and hot-rolled aluminum sheets are suitable for stamping and stretching.
6, the difference between the finished product: usually the elongation of the cold-rolled final product is lower than the elongation of the hot-rolled final product.