Calculation of metal forming processes by means of FEM

The simulation of metal forming processes with the finite element method (FEM) is becoming more and more significant for process analysis and optimising. With regard to the quality of the calculations care must be taken to select a suitable FE model. Possibilities for FEM applications will be shown using the examples of die bending sheets and profile bending. A practical extension of this application is the support of the FE systems user by access to a material database.     

锚杆支护顶板失稳的突变理论浅析

应用突变理论来研究采用场锚杆支护顶板围岩失稳的力学过程,分析研究了锚杆支护系统发生突变的突变尖点。     

Improving the energy efficiency of blast furnaces by means of hot reducing gases

Groundbreaking energy-saving blast-furnace technologies are needed to reduce the energy costs in the production of hot metal and converter steel. The reduction in coke consumption and increase in productivity when hot reducing gases are injected into the blast furnace are assessed on the basis of calculations and industrial trials. The composition of the reducing gases is described before and after compression of the blast-furnace gases. Systems for recycling the blast-furnace gas and removing the CO₂ are considered. The economic and energy benefits obtained by the injection of hot reducing gases are appraised. The energy efficiency of hot-metal production is increased by 40%.     

鼓风动能对高炉冶炼的影响及控制

主要探讨了鼓风动能对高炉冶炼的影响,指出鼓风动能对高炉稳定顺行的重要性。重点分析了影响鼓风动能的因素及控制方法,通过对宝钢3号高炉冶炼实绩对比分析,统计归纳出3号高炉合理鼓风动能的范围及经验计算式。