Difference Between Hot Rolled (DC) and Cast Rolled (CC)

Difference Between Hot Rolled (DC) and Cast Rolled (CC)

Both hot rolling and casting rolling are a process of aluminum processing, and products produced under different processes will have differences in performance.

What is the hot rolling (DC) process ?

Hot rolling is relative to cold rolling, cold rolling is rolling below the recrystallization temperature, and hot rolling is rolling above the recrystallization temperature.

Hot rolling process

Hot rolling generally refers to rolling metal above the crystallization temperature. In the hot rolling process, metal deformation has both a hardening process and a softening process. Due to the effect of the deformation rate, as long as the recovery and recrystallization process is too late, the metal will work harden with the increase in the degree of deformation.

However, in the hot rolling temperature range, the softening process dominates. Therefore, at the end of hot rolling, the recrystallization of metal is often incomplete, and the hot-rolled aluminum alloy strip presents a microstructure state in which recrystallization and deformation microstructure coexist.

Hot rolling equipment

What is the cast rolling (CC) process ?

Casting, also known as ingotless rolling, is a forming method that combines casting and rolling. The diagram below illustrates the basic principle of this molding method.

Casting and rolling process

Casting is a new technique of directly “casting” molten metal into semi-finished or finished products. The distinctive feature of this process is that its crystallizer is two rotating casting rolls with a water cooling system, and the melt is solidified and hot rolled between the rolls, which is completed in a short time (2~3s).

Casting and rolling is a new technology developed in the 1970s. The advantage is that the molten metal is directly crystallized, cast and rolled by the rotary mold to directly produce metal products.

Casting and rolling equipment

The difference between hot-rolled aluminum sheet and cast-rolled aluminum sheet

What is the difference between hot rolled aluminum sheet and cast rolled aluminum sheet? This should be a big problem that plagues many small partners who are new to the aluminum processing industry. It’s actually very simple. One is heat treated and one is not. Basically in line with the literal meaning. Below Huawei Aluminum Company will introduce the difference between the two in detail.

• 1. Different production processes: casting and rolling are cast-bonded coils (8mm thick) processed by cold rolling mills, and hot rolling is aluminum ingots (400-500mm thick) that are heated and rolled by hot rolling mills at high temperature;
• 2. The supply of raw materials is different: the difference between the two is that the supply of blanks is different. The hot-rolled billet is cast aluminum ingot-heated-rolled into cold-rolled coil, and the cast-rolled billet is cast-rolled coil-cast-rolled;
• 3. Different properties: hot-rolled aluminum sheet has good surface quality, strong mechanical properties and ductility, and good oxidation effect. At the same time, the processed aluminum sheets are generally aluminum sheets, which are naturally affected by the properties of the aluminum sheets.



Difference Between Hot Rolled (DC) and Cast Rolled (CC)

• 4. Different uses: cast-rolled aluminum sheets are mostly used for molds, and hot-rolled aluminum sheets are suitable for stamping and drawing.
• 5. Price difference: The process of cast-rolled aluminum sheet is simple, and the price is cheaper than that of hot-rolled aluminum sheet.
• 6. Different finished products: Generally, the elongation of cast-rolled products is lower than that of hot-rolled products.

How to choose DC or CC aluminum?

Many customers buy aluminum sheets for the first time and may not know much about the product. They don’t know whether to choose cast-rolled or hot-rolled aluminum. It doesn’t matter if they don’t know. Just tell our customer service staff in detail. We will arrange a professional business manager for you and recommend suitable products according to your needs.

Huawei Aluminum provides low-cost high-quality aluminum sheets, aluminum coils, aluminum foils, aluminum strips, and aluminum disc products, 1000 series, 3000 series, 5000 series, and 6000 series plates with a thickness of 0.1-500mm, and the main alloy models are 1050, 1060, 1100 , 3003, 3004, 3104, 3105, 5005, 5052, 5083, 5754, 6061 aluminum sheet, etc.