轧制

The rolling theory deals only with simple rolling condition. But, in fact, any rolling process has, more or less, some nonsymmetry.

根据轧制理论，在普通四辊轧机上轧制薄带钢时，常被认为相当接近于简单轧制条件，这时两轧辊上的轧制力矩相等。

And then, according the FEM numerical simulation result, the coefficient value of the modified model is made sure. Moreover, the transform characteristic of section is analyzed, the dynamic change process of rolling-force, stress and strain is reappeared and the variety regulation is analyzed. Through the contrast the variety regulation between the simulation and the spot-line measurement, the conclusion that the datum are matched basically is obtained.

并且，分析了连轧无缝钢管截面的变形特点及轧制力和应力应变的变化规律，重现了轧制力和应力应变的动态变化过程，对比了有限元数值模拟的轧制力与现场实测的轧制力，得到了两者的变化规律基本相符的结论，证实了显式动力学有限元法作为连轧无缝钢管的研究方法的可行性。

Analyzed temperatures distribute during roughing roll and the effect of rolling parameter to draught pressure,analyzed the effect of rolling parameter to railhead and extension of heavy rail. At last,the research analyzed metal point's flow characteristic and revealed deforming regularity of heavy rail.

分析了在粗轧过程中温度场的分布以及轧制过程中轧制参数对轧制力的影响规律，分析了轧制参数对轨头、轨底宽展的影响规律，最后还分析了金属质点流动特性，揭示了重轨的变形规律。

Analyzed temperatures distribute during roughing roll and the effect of rolling parameter to draught pressure, analyzed the effect of rolling parameter to railhead and extension of heavy rail. At last, the research analyzed metal points flow characteristic and revealed deforming regularity of heavy rail.

分析了在粗轧过程中温度场的分布以及轧制过程中轧制参数对轧制力的影响规律，分析了轧制参数对轨头、轨底宽展的影响规律，最后还分析了金属质点流动特性，揭示了重轨的变形规律。

At first, on the basis of the combination research methods of analytical theory, numerical simulation and experiment, the mathematical and physical model of certain-length rolling process have been established. Then according to the established model, the menstruation of rolling average friction coefficient is proposed; and then the certain-length rolling process and key parameters are determined.

采用理论研究、数值模拟和实验研究相结合的研究方法，建立定长轧制物理模型和数学模型；基于所建模型，提出了一种测定轧制平均摩擦系数的方法；确定了定长轧制工艺方法和关键参数；分析了影响制件轧制长度的因素；对关键参数进行了数值模拟。

In the paper, the present state of ultra-fine-grained materials, severe plastic deformation and Asymmetrical-ARB are introduced in detail; the craft to fabricate ultra-fine-grained copper using Asymmetrical -ARB is studied fully; the problem of combination of interface is settled; the affect of homogenizing annealing、 annealing and rolling method on mechanical properties of materials prepared by Asymmetrical-ARB is discussed and analyzed when control parameters of rolling mill such as the press—ratio、 the asynchronous rate、 rolling—speed are fixed, and a kind of craft that meets to requirement of experiment is made out.

本文对超细晶、大塑性变形技术、异步轧制目前国内外研究进行了详细的介绍；对异步叠轧方法制备超细晶铜工艺做了较为细致的研究：解决界面复合问题；在压下率、异步比、轧制速度等轧机控制参数固定条件下，探讨了均匀化退火工艺、去应力退火工艺和轧制方式对异步叠轧材料力学性能的影响，并进行了分析，制定出符合实验要求的轧制工艺。

Strip limit minimum rollable gauge and minimum rollable gauge considering productivity are analyzed and derived using new rolling pressure model, work roll surface temperature rise formulae is derived on the basis of mill stand thermal balance. The affecting factors of work roll surface temperature and the influences on the choice of roll size are discussed.

本文从轧机结构设计、力能参数计算、强度设计计算等方面综合论述了辊系参数设计计算的基本理论，在理论上提出了采用考虑粘着摩擦的混合摩擦模型和考虑轧件的弹性变形计算冷轧薄板轧制压力的方法，推导并以冷轧机实测轧制压力验证了轧制压力新模型；应用新的轧制压力模型分析并推导了轧件极限最小可轧厚度和考虑生产率的最小可轧厚度公式；根据工作机座热量平衡原理推导了工作辊温升公式，分析了工作辊温度的影响因素，研究了工作辊温升对轧辊参数选择的影响。

The transition zone shape is oblique step formed with knifing stage of side wedge. It was analyzed in different knuckle angle by FEM simulation and rolling test. The rule of knuckle angle value influence on smooth levels of surface in forming the equal diameter axis with MCWR was obtained.

楔横轧多楔成形光轴类零件时，内外楔之间轧件的过渡段形状为由外楔楔入段轧制而成的斜台阶，通过有限元模拟和轧制实验，对不同过渡角下多楔轧制光轴表面光滑程度进行分析，得到过渡角对楔横轧多楔轧制光轴表面光滑程度影响规律。

In order to increase the rolling capability of three-high cogging mill,the forging plant of Laigang reforms the traditional cogging process,joining the six angle-square pass with box pass well and designing the six angle pass with heavy elongation to realize conjugate rolling,thus realizing the heavy reduction,heavy elongation for cogging rolling and single end product outing and self nip,improving the rolling rhythm.

为提高三辊开坯轧机的轧制能力，莱钢锻压厂对传统的开坯工艺进行改造，将六角—方孔型与箱形孔良好衔接，并设计了能够共轭轧制的大延伸六角孔，从而实现了开坯轧制大压下、大延伸，以及成品单出与自动咬入，提高了轧制节奏。

Secondly, aiming at the difficulty of information sharing between reheating furnace and roughing mill which is brought by the separate control of the two facilities, and the problems of exceeding energy consumption and low security of rolling process given by the difficulty to adjust the heating process of slab dynamically, this paper presents a comprehensive optimizing control strategy of reheating furnace based on the rolling information feedback. In the presented strategy, fuzzy control and neural network are used to feed roll force and slab temperature of therolling process back to reheating furnace and the concrete furnace temperature setting compensation value can be worked out. So that the heating process of slab can be adjusted dynamically according to the heating quality of the slab, and energy consumption can be reduced, the rolling security can be ensured as well.

其次，针对目前加热炉和粗轧机的分离控制带来的生产信息难以共享、钢坯的加热过程难以动态调整而造成的能耗浪费过大、粗轧机轧制安全难以保障等问题，提出了基于轧制信息反馈的加热炉综合优化控制策略，利用模糊控制和神经网络的方法，将粗轧机一侧的能够反映钢坯加热质量好坏的生产信息，如粗轧机的轧制力、钢坯的温度等，反馈到加热炉一侧并计算出炉温设定值的补偿量，从而能够根据钢坯的加热状况动态地调整后续钢坯的加热过程，减少了能耗浪费，保障了轧制安全。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。