Controlled rolling of high-strength microalloyed pipe steel on a 5000 thick-sheet mill

Models are developed to describe and predict the geometric and temperature conditions of thick-sheet rolling at different stages (with determination of the billet parameters, its chemical composition, and also the conditions of heating, rough and final rolling, and accelerated cooling). On that basis, effective production conditions for pipe blanks of strength classes K60 and X80 are formulated, so as to ensure the required structural state and specified mechanical properties of the blank.     

热连轧精轧机组温度控制数学模型研究

从现场实际出发研究了精轧各个环节的温度变化过程,分析了带钢热连轧终轧温度与各影响因素之间的关系.同时将温度模型程序化,采用计算机系统进行分析和计算,提出了行之有效的温度模型方案.该温度模型对其它热轧生产线同样适用.     

Assessing channel rolling on a 450 mill

A method of assessing roller grooving for channel rolling is proposed, in which the channel shape is taken into account by means of matrix characteristics. The influence of the channel shape on the rolling force and energy is considered. The relations derived allow the load on the rolling cells to be judged on the basis of the matrix characteristics.     

棒材连轧生产线低温轧制的可行性分析

棒材连轧生产线可采用低温轧制工艺实现节能降耗。通过热模拟试验回归出了变形阻力模型，建立了轧制过程温度模型并计算出了轧机负荷。金相试验表明，适当降低轧制温度有利于晶粒的细化，从而改善钢材的力学性能。     

Optimizing roller operation in the 5000 mill at OAO MMK

Since 2009, numerous failures of the working rollers in the 5000 mill at OAO MMK have been observed, on account of fracture of the drive pins. Efforts to resolve this problem are described.     

韶钢高炉煤气在轧钢加热炉的应用

钢铁联合企业副产大量的高炉煤气,但高炉煤气因热值低,难于直接用于轧钢加热炉上,许多企业存在高炉煤气富余放散的现象.韶钢通过采用金属换热器对高炉煤气、助燃空气进行双预热,重油-高炉煤气混烧,蓄热式燃烧技术等措施,将高炉煤气用到轧钢加热上,充分利用企业的富余高炉煤气,降低了轧钢工序的生产成本,走出一条发展循环经济的新路子.