L2 critical process control technology and system application for aluminum strip cold mill

Currently, lot of domestic aluminum single stand cold rolling mill have the following problems: First, technology strategy is generally non-normalized and over-reliance on mill operators, which result in unstable rolling process; Second, setup values of rolling parameters for head strip, are calculated based on simple models, which could not guarantee prediction accuracy and reduce shape and gauge quality of strip head. In response to these problems, critical process control technology for aluminum cold strip mill is explored, including mathematic model, setup calculation, shape setup, self-adapting and self-learning, based on which L2 process control system is developed. After operating in one 1550 mm 4-high cold strip mill, it approves that the L2 system could achieve standardization of rolling process, accurate prediction for rolling parameters´ setup value, effective production data trace, and lead to efficient and stable rolling process with high-precision of strip shape and gauge, helpful to create higher benefit for the enterprises.