The basic steps of making aluminum sheet

1. Aluminum and aluminum alloy sheet and strip are supplied in hot rolled state, annealed state, various levels of soft state and various heat treatment states.
2. Preparation before hot rolling, mainly including ingot quality inspection, soaking heat, sawing, milling, aluminum coating and heating, etc.
3. The cooling rate of semi-continuous casting is very high, the diffusion process in the solid phase is difficult, and the chemical composition and microstructure are easy to form in the ingot, such as intra granular segregation, so that the plasticity is reduced
4. When there are defects such as segregation emerging, slag inclusion, scarring and crack on the ingot surface, milling should be carried out (see non-ferrous metal alloy ingot milling), which is an important factor to ensure good surface quality of finished products.
5. Hot rolling: Hot rolling of aluminum alloy ingot is to provide blank for cold rolling, or directly produce hot rolled thick plate.
6. Hot rolling process system includes pass reduction rate, rolling temperature, rolling speed, lubrication and cooling