1. Aluminum and aluminum alloy plates and strips are supplied in hot rolled, annealed, various grades of soft state, and various heat treated states.
2. Preparation before hot rolling mainly includes ingot quality inspection, soaking, sawing, surface milling, aluminum cladding, and heating.
3. During semi continuous casting, the cooling rate is very high, and the diffusion process in the solid phase is difficult. It is easy to form uneven chemical composition and microstructure inside the ingot, such as intragranular segregation, which reduces plasticity.
4. When there are defects such as segregation floats, slag inclusions, scabs, and cracks on the surface of the ingot, the aluminum plate manufacturer tells you to perform surface milling (see Non ferrous alloy ingot surface milling), which is an important factor to ensure good surface quality of the finished product.
5. Hot rolling: The hot rolling of aluminum alloy ingots is to provide blank for cold rolling or directly produce thick plates in the hot rolling state.
6. The hot rolling process system includes pass reduction, rolling temperature, rolling speed, and lubrication cooling.