[China Aluminum Network] Process of processing aluminum and aluminum alloys into smelting, ingot ingots, various pre-rolling preparations, flat roll rolling, heat treatment, and finishing into single-sheet or roll-shaped processing materials with rectangular cross-sections.
1. Aluminum and aluminum alloy plate strips are supplied in hot rolled state, annealed state, various grades of soft state and various heat treatment states.
2. Preparations before hot rolling mainly include quality inspection of ingots, soaking, sawing, milling, cladding and heating.
3, semi-continuous casting cooling rate is high, the diffusion process in the solid phase is difficult, the ingot is easy to form the chemical composition and structural inhomogeneity, such as intragranular segregation, so that the plasticity is reduced
4. When the surface of the ingot has segregation, slag inclusion, slagging and cracks, etc., it shall be faced (see non-ferrous metal alloy ingot milling face), which is an important factor to ensure good surface quality of the finished product.
5. Hot Rolling: Hot rolling of aluminum alloy ingots provides blanks for cold rolling or directly produces hot-rolled thick plates.
6. The hot rolling process includes pass reduction, rolling temperature, rolling speed, lubrication and cooling.
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