Abstract: A model for prediction of erosion profile of the hearth and botlom of a blast furnace is established based on the analysis of the erosion mechanism of the hearth and bottom of the blast furnaces. The 1150℃ isotherm as a reference profile of the erosion of the hearth and bottom was calculated with the finite element method. The optimal working profile of the hearth canbe made by the model combined with the operative indication by the knowledge bases.
Abstract: The simulating on-line expertsystem for Baoshan steel converter processes and its structure and function was introduced. Its application in Bao shan Iron & Steel Corporation was also shown.
Abstract: The present paper describes the functions, structure as well as the features of "Computerized thermophysical data bases for metallurgical melts". As the major partion of the IDMSKM system, the software has been developing based on WINDOWS as working bench, FOXPRO and MS C/C+ +as coding languages. The main features of the present system are the high speed of the data retrieval, the user friendly graphical interfaces as well as the capability of predicting thermophysical properties for some specific types of molten systems. The present system is expected to be expanded and would become a comprehensive system of kinetics data bases with their applications.
Abstract: The kinetic computer-controlled process model and its application for the stainless steel refining in 18t AOD vessel at Taiyuan Iron and Steel Co.are presented. The carbon content and temperatrue at end point were controlled. The chromium yield was increased by use of the model.
Abstract: The numerical prediction is conducted on the magnetic field, fluid patterns of molten steel and trajectories of inclusion particles in continuous casting mold controlled by the electromagnetic brake (EMB). The difference between maximum and minimum of shear stress on wall is used to scale the strength of jet imping on the solidified shell in the narrow face wall by molten steel discharged from the immeresd nozzle. When the EMB is applied, the flow patterns of molten steel in the mold is greatly changed, and the impingement strength of the jet is reduced. It is found that the successful control of flow pattern depends on the coil current and location of direct-current magnet.
Abstract: The equivalent circuit and the mathematical model of mag-netic field for induction ladle furnace were presented. The unload, load and leakage magnetic fields of induction ladle furnace were computed by use of finite element method. The values of parameters in the equavalent circuit were obtained.
Abstract: Based on the surface quality of 1Crl8Ni9Ti and its production data, the computer sorting treatment was carried out using discriminatory analysis mothod. The critial processing factors are achived.
Abstract: Introduces the basic principle of the Thermal Video System TVS-2200 series (Japan). By analysing its specific data structure. the image of temperature distribution has been displayed on the personal computer screen, and has converted its image data to temperature values.
Abstract: The commercial code CFD (Computer Fluid Dynamics), PHOENICS, was applied to simulate the turbulent flow field in the classiffier rotor. The single-phase three dimensional rotation flow field in the rotor was calculated by use of this software. The numerical calculation results of the flow field in the rotor were discussed, The anaylsis shows that the numerical simulation can be used for the design and the improvement of the classiffier.
Abstract: On the basis of the coexistence theory of slag structure. the thermodynamic calculating model of CaO-B2O3 slag melt was deduced. The agreements between calculated NCaO, NB2O3 and measured acaoaB2O3 are well. The relationship of nitrogen solution in CaO-B2O3 slag with mass action concentrations of structural units has been suggested and the related physical means are discussed. The nitrogen solution in CaO-B2O3 slag is closely connected with the slag structure.
Abstract: Based on the research on gas flow and post-combustion in basic oxygen steelmaking furnace (BOF) by authers,a mathematical model about heat tranisfer has been developed. In the different periors and different design of subhole nozzel, heat transfer by different form and total heat transfer were obtained in the 180t BOF.
Abstract: According to linear optimum principles and interrelationships of physical and chemical changes during Outfurnace Smelting, the optimum feeding mathematical model is established for Outfurnace Smelting with thermit reduction method. A charge example calculation is carried out on computer and it concluded that the presented method is more advanced.
Abstract: Constructed the mathematical models and computer softwares to calculate the current density,magnetic flux and electric magnetic force fields. By use of these softwares, the distributions of current desity,magnetic flux and electric magnetic force about 80kA vs. soderberg cell were computed and simulated. Some suggestions about the cell ledge were given out based on the calculated results.
Abstract: The mathematical modelling of three dimensions electromagnetic field in the bloom electromagnetic casting by coupled circuit method. These work provided reference and guide for improving cast process and mold optimum design.
Abstract: Developes a three-dimensional heat transfer program in the cylindric coordinate system. Using the program, temperature Profile for cast-in-brick stave of blast furnace has been calculated. In the same time, the influence of the heat transfer coefficient in the furnace, the velocity of the cooling water. the distance between two pipes, and the thickness of the brick on the distribution of temperature on cooling wall has been studied.
Abstract: The internal boundary in flow field, which must be designated in the cylindrical polar coodinate system, can be avoided by using body-fitted coordinate system (BFC). Consequently, computed flow of molten steel and paths of alloying additions are able to cross smoothly the geometric centerline of cylindrical verssel.Motion of particles is calculated in three dimensional coordinate system, the modification of parameters,such as the drag coefficient and density in the two phase region, is examined. Some factors affecting the trajectories of alloying additions are discussed.
Abstract: Started from the kinetic experiments of nitrogen removal by fluxes and the mass transfer theory of double film a mathematical model of nitrogen removal has been developed. Based on the model, the removal process of nitrogen can be prodicted and the methods increasing the effect and rate of nitrogen removal by fluxes can be obtained.
Abstract: A mathematical model for velocity distribution of multijet was developed based on the new relationship between two paraneters Kj and λj which describe the velocity distribution for the supersonic jet and the linear momentum superposition of single jet with two steps of correction, the inclination of jet centerline and the suction coeffcient. Calculated values are in good agreement with experiment results.
Abstract: A mathematical model for heat transfer in continuous cast steel slabs has been established. An alternate implicit difference technique was used to reduce the transient conduction equation and boundary equafions to the algebraric eguations which can be programed for computer solution. The result of calculation was tested and verifide.
Abstract: Recomend Pattern recognition and artifical neural network algorithm be used on the procedure optimization of tiny vanadium alloy-treated 16Mn-steel production. It has been gived that optimum procedure parameter for various traget to provide reference in production.
Abstract: A numerical simulation is studied on the basis of PSA oxygen-enriched process.A steady mathematical model is established. A broken-line approximation is used for describing the equation of adsorption equilibrium isotherms of nitrogen component. In order to solve the mass transport rate equation, the implicit difference method is used. The optimal parameters of design and its influence on the oxygen-enriched process are obtained.
Monthly, started in 1955 Supervising institution：Ministry of Education Sponsoring Institution：University of Science and Technology Beijing Editorial office：Editorial Department of Chinese Journal of Engineering Publisher：Science Press Chairperson：Ren-shu Yang Editor-in-Chief：Ai-xiang Wu ISSN 2095-9389CN 2095-9389
