The laminal defect of J55 hot rolled steel coil,which is found in the process of slitting the strip of the coil into two for the purpose of production of the welded tubes,has been analyzed by optical metallographic microscope and other analytical devices.

Hybrid temperature model for hot strip in finishing stands;

Process of coil-box for Laiwu Steel Group's 1500-mm hot strip is described,including the oper- ating model of coil box,the control process of automatic coiling and uncoiling.

The Development and application of 1 450 mm hot strip laminar cooling simulation system for Pangang company are introduced in this paper.

Temperature and phase transformation coupling prediction model of hot rolled strip cooled on the run-out table;

Prediction coiling temperature of hot rolled strip by artificial neural network;

Mathematical model for coiling temperature control of hot rolled strip and its self-learning;

Improvement of hydraulic control system for hot rolling strip scale breaking based on quadratic form theory;

Research method and measure analysis of transverse temperature in hot rolling strip;

Solving the inventory matching problem of hot rolling strips based on the constraint satisfaction method;

Application of flexible strategy in laminar cooling system of hot strip mill;

Progress of runout table cooling technology in hot strip mill;

The system of roll mill press down is controlled to compensate the thickness variation of the hot strip mill so as to improve the hot-rolled strip thickness accuracy.