Hot Rolled Aluminum Coil VS Cold Rolled Aluminum Coil

Hot rolled aluminum coil and cold rolled aluminum coil are two common aluminum coil products, they have obvious differences in the production process, performance characteristics, application areas. The following is a detailed analysis of the differences between hot rolled aluminum coil and cold rolled aluminum coil from various aspects.

1. Production Process:

Hot rolled aluminum coil is the aluminum billet heated to a certain temperature through the hot rolling mill for rolling and processing, the whole process is carried out at high temperatures, so the surface of the hot rolled aluminum coil will have a layer of oxide skin. Cold rolled aluminum coil is processed by cold rolling mill at room temperature, the whole process does not produce oxide skin and the surface is smooth.

2. Physical Properties:

Hot rolled aluminum coil due to processing at high temperatures, the grain size is coarse, low hardness, but good ductility, easy to process molding. Cold rolled aluminum coil are processed at room temperature, the grain size is finer, the hardness is higher, but the ductility is relatively poor.

3. Surface Quality:

Hot rolled aluminum coil surface finish is poor, there are oxidized skin, the need for further pickling treatment to achieve a certain surface quality. Cold rolled aluminum coil surface finish is higher, no oxide skin, surface quality is better.

4. Dimensional Accuracy:

Cold rolled aluminum coil have higher dimensional accuracy, thickness, width, straightness and other aspects of better control than hot rolled aluminum coil. Therefore, cold rolled aluminum coil are usually used in areas that require high dimensional accuracy.

5. Application Areas:

Hot rolled aluminum coil is suitable for some of the surface quality requirements are not high, processing and forming requirements of the field, such as construction, automobile manufacturing, etc. Cold rolled aluminum coil is suitable for the surface quality, dimensional accuracy of the higher requirements of the field, such as electronic products, aerospace and so on.

In summary, hot rolled aluminum coil and cold rolled aluminum coil in the production process, physical properties, surface quality, dimensional accuracy, application areas and other aspects have obvious differences. When choosing aluminum coil products, you need to choose the right type of product according to the specific use requirements and environment. At the same time, with the continuous development and improvement of technology, the performance and application areas of hot rolled aluminum coil and cold rolled aluminum coil are also expanding and improving, providing more and better choices for various industries.