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…     

1270轧机弹性曲线的回归及参数估计

首先介绍了轧机弹性曲线的基础知识及 1 2 70轧机AGC系统的基本结构 ,然后论述了数据采集的方法 ,最后根据最小二乘法得到轧机弹性曲线的回归模型及刚度系数的实验结果。     

高应力水平下滚动轴承疲劳寿命试验研究

通过在三种不同的强化负荷下进行深沟球轴承疲劳寿命试验，并与常规试验一组结果对比。结果表明，适当地加大滚动轴承疲劳寿命试验负荷，可以大大缩短试验时间，而疲劳寿命依然服从Ｗｅｉｂｕｌ分布，且与常规试验结果基本一致，同时疲劳破坏的形式仍是表面下萌生裂纹，然后扩展至表面形成剥落。     

降低棒线导辊消耗的技术措施

分析了影响导辊使用寿命的因素，采取了相应的技术措施，有效地降低了导辊的消耗量。     

Microstructural Modelling of Nb Microalloyed Steels during Thin Slab Direct Rolling Processing

The microstructural evolution during the hot rolling of coarse grain sized austenite has been modeled considering all the microstructural mechanisms (dynamic, static and metadynamic recrystallization, strain induced precipitation) that can take place during an industrial TSDR production of three Nb microalloyed steels. Based on the results obtained from the model, processing maps have been drawn for 0.02%, 0.035% and 0.05% Nb microalloyed steels. Optimum processing conditions to exploit all the benefits of the Nb microalloying have been defined considering a final gauge thickness range between 1.5 and 12.65 mm. In addition, and facing the difficulties present in the production of thick hot strip, several alternative thermomechanical schedules are proposed, which would originate microstructures with a suitable combination of homogeneity and retained strain prior to transformation.     

宽带钢冷轧机颤振控制的数值模拟

本文以较为准确的轧机振动状态下的轧制压力模型为基础，对宽带钢冷轧机干摩擦阻尼减振进行了数值模拟的研究。研究结果与实际观测值相等。     

Consistency retention method for CNC machine tool digital twin model

Computer Numerical Control Machine Tool (CNCMT) Digital Twin (DT) model is a carrier for complex, time-varying, coupled data of CNCMT, which can theoretically provide a time-varying high-fidelity model. However, there are still many difficulties in its implementation process. And the key issue is how to realize the updated DT model with performance attenuation and validate it. In order to solve this problem, a model consistency retention method for CNCMT DT model is studied and proposed in this paper. Firstly, the framework of consistency retention method for DT model is designed including both digital space and physical space. The principles of data management and performance attenuation update in digital space are elaborated. Then, the implementation method for consistency retention of CNCMT DT model is studied in terms of performance attenuation update workflow for wear and other damage separately. Finally, a case study for the establishment and application of high-fidelity test bench DT model that focusing on rolling guide-rail is carried out to show the implementation flow of the proposed method and verify its operability and effectiveness.