On the basis of the two-dimensional mathematical model~([1]) and the one-dimensional on-line control mathematical model~([2]) for hot delivery and hot charging process of ingot system,a dynamic ingot discharged prediction system was developed successfully and has been used to production process at the end of 2004.

For the requirements of on-line computer control, The one-dimensional mathematical model for the hot transferring and chargingprocess of ingot system has been established by the“Rreformed Tanaka Kou’s Method”that translates the two-dimensional mathematicalmodel of the infinite length type of rectangle into the one-dimensional mathematical model of the infinite length type of cylinder.

2 slab caster of Shouqin Company as example the features of main equipments of upper-fixing dummy bar system is introduced as well as technical measures to shorten production preparation time of casting and raise production ratio.

Influence of Ingot Type on Carbide Nonuniformity in High Speed Steel Product;

Study on phase transformation of 16MnCr5 steel ingot during consolidating and cooling;

The vertical directional solidification process of steel ingot was simulated considering the ingot structure and casting material properties, the initial condition and boundary conditions and natural convection of liquid metal and solute diffusion during solidification.

Based on analyzing the iron sheet's structure and component during steel ingot heating, it is found that the influence of steel ingot oxidizing to the ratio of air to fuel and it is calculated that compensate coefficient the ratio of air to fuel.

The influence of casting temperature and velocity on the slag deposition of ingot head;

Phase transformation of chill layer of low carbon steel ingot and its effect on hot charging crack;

The formation mechanism on hot charging process crack of low carbon steel ingot;