2300mm三辊中板轧机的加宽改造及维修性设计

本文就三辊轧机的改造要点及“维修性设计”在三辊轧机改造中的应用做了技术分析和论述。     

Microstructural change of ultrafine-grained aluminum during high-speed plastic deformation

Effect of strain rate on microstructural change in deformation of the ultrafine grained (UFG) aluminum produced by severe plastic deformation (SPD) was studied. Commercial purity 1100 aluminum sheets were highly strained up to an equivalent strain of 4.8 by the Accumulative Roll-Bonding (ARB) process at ambient temperature. The ARB-processed sheets were found to be filled with pancake-shaped ultrafine grains surrounded by high-angle grain boundaries. The ultrafine grains had a mean grain thickness of 200 nm and a mean grain length of 1100 nm. The ultrafine-grained aluminum sheets were deformed at various strain rates ranging from 2 to 6.0×10⁴ s⁻¹ by conventional rolling, ultra-high-speed rolling, and impact compression. High-speed plastic deformation generates a large amount of heat, inducing coarsening of the ultrafine grains during and after deformation. On the other hand, it was also suggested that high-speed plastic deformation is effective for grain-subdivision, in other words, ultra-grain refinement, if the effect of heat generation is extracted.     

连轧管机组与Accu-Roll轧管机组的比较

介绍了连轧管机组和Accu-Roll轧管机组的发展概况和优缺点，结果得出，连轧管机组大多数指标优于Accu-Roll轧管机组。     

南（昌）长力钢铁公司优化热送热装率生产实践研究

通过对南（昌）长力钢铁公司2号铸坯机以及棒材生产线轧钢产能分析，优化转炉2号铸坯机一轧钢工序产能合理匹配；提高热送热装率的优化技术，该技术的应用不仅提高了棒材生产线生产能力而且节约能源。     

Attitude Controller Design on Variable Rolling Velocity Aerocraft Based on ATmega16

1 Introduction Owing to the effect of crosswind, initial disturbance and the deviation of engine parameters.etc in the initial aviation, variable rolling velocity aerocraft will produce attitude angle deviation (AAD) in the ideal orientations. It must control the attitude of the aerocraft, accordingly, AAD of aerocraft can be amended.Angle stabilization control system is used for the attitude control of rolling aerocraft by this paper. This control system is generally located in the control…     

轧机主传动电机励磁控制分析

在技术资料短缺的情况下，结合实际经验，绘制出进口轧机主传动电机励磁控制电路图，并进行了较为详细的分析。     

双进双出钢球磨煤机的特性与故障处理

介绍双进双出钢球磨煤机双进双出、料位控制、辅助风系统和蒸汽惰性置换系统的特点，重点分析小齿轮断齿、大小齿轮齿面磨损点蚀严重、螺旋输煤绞笼损坏、磨煤机大瓦温度高、料位系统异常等常见故障及发生的原因，并提出相应设备和系统的改进措施。     

高线精轧机组远程监测与诊断应用研究

介绍了一种高线精轧机组远程监测与诊断系统的软硬件结构与功能 ,该系统采用B/S模式并结合CORBA及SOAP /WebService技术 ,较好地解决了实时数据的动态显示以及负载均衡等问题。经过运行实践证明 ,该系统能对现场设备的运行状态及时作出判断 ,具有较高的可靠性与稳定性。     

CX6112车铣复合机床设计方案的研究与探讨

文章较系统地论述了车铣复合机床设计方案的形成过程，同时分析了该设计方案的持点，并简要介绍了该产品的主要技术参数和用途，简评了该产品的技术水平。