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Considered the inside and outside contour line was Archimedes spiral in the cold rolling, the forming law of rectangular cross sectional rings has been studied. And the more precise geometrical models and calculation models have been gained. The researches can be used as a theoretical and experimental foundation for the simulation of ring rolling process. At the same time, the results of theoretical analysis have a good agreement with the results of practical rolling production.

本文在考虑冷轧过程中环件的内外轮廓线均为阿基米德螺线的情况下，对矩形截面环件的轧制成形规律进行了研究，得到了较精确的几何模型和计算模型，为环件轧制过程的模拟提供了理论依据和实验依据，同时理论分析的结果与实际轧制生产过程中的结果有较好的吻合。

In general, the mechanical mouse only need to be cleaned up "the body" in the ball rolling and rolling-axis can be.

一般来说，机械鼠标只需要清理"身体"里的滚动球和滚动轴即可。

Analysis of application effect proves that strip flatness error can be well controlled in the scope of 0～3 I in stable rolling condition and close loop feedback control method satisfies the need of high precision control for cold rolling strip flatness. cold rolling ; Clecim AFC system ; multivariable optimum control

本文对国内某厂引进的Clecim冷轧AFC系统的控制原理和控制特点作一介绍，并对实际的板形控制效果进行分析说明。1闭环反馈控制原理Clecim冷轧AFC系统的控制原理如图1所示，板形检测值与目标板形相比较得到板形误差分布，通过多变量优化控制求

The observation of the sheet microstructure showed that under same rolling reduction be cause of the shearing stress of the cross-shear region in the cross shear rolling pro cess, it made the metal subjected more practical shearing strain and resulted in the increasing of the strength and deep drawing earing of the alloy sheet.

通过金相显微镜及电镜观察表明，在同样的几何变形程度下，由于异步轧制中搓轧区的作用，使金属经受更大的实际切变形，结果经异步轧制合金板的强度高，深冲制耳率也高。

Because be mingled with of the sulfide in rolling process steel and rolled steel are coinstantaneous,be out of shape , its want to the influence of the mechanical function of direction of rolled steel length relatively blame rolling direction is mechanical the impact of function is little much.

由于轧制过程钢中硫化物夹杂和钢材同时发生变形，其对钢材长度方向的力学性能的影响要较非轧制方向力学性能的影响小得多。

The analysis of the application of grooveless rolling technology proves that grooveless rolling can be successfully realized in the big-distance mills.

通过对无孔型轧制的工业试验和技术分析，得出无孔型轧制可在大间距轧机上实现，脱方控制的关键点是导卫控制和宽展控制，翻平宽展能使轧件产生圆弧钝角，避免了应力集中和裂纹，采用无孔型轧制具有可统一坯料、提高轧辊寿命2～4倍、降低能耗6%～7%等优点。

Moreover, it is necessary to point out an additional advantage: the strip obtained at the end of the passage throughout the whole hot-rolling and casting line is already at its final thickness and ready to be used, without the need to carry out an additional treatment in a cold-rolling line.

此外，需要指出一个额外的优点：贯穿整个热轧制和铸造线的末端获得的金属条已经是具有最终厚度并准备进行使用，而不需要在冷轧制线上进行附加的处理。

Furnace door movements through rolling ro-und in the upper and lower guide rail rolling realized,ens-ures that when furnace door closed seal anastomosis betweenfurnace door and furnace,ensured that the opening will not be in the process of friction injury masonry,furnace door and the car actionboth passed by the motor worm gear redu-cer,to provide the chain of transmission,electromagnetic brake and equipped with appropriate adjustments.

炉门升降通过滚动轮在导轨上下滚动实现，既保证了关闭炉门时炉门炉体间的吻合密封，又保证了在开启的过程中不会磨擦损伤砌体，炉门及台车运动均是由电动机通过蜗轮蜗杆减速机，链条传动来提供的，并装有电磁制动器进行适当的调整。

The experiment and the research indicate that:(1) Through the Hot-Continuous-Rolling production technics under small reduction ratio of 4.04 and 5.08, the rectangular continuous-casting billet of 235×265mm can be used to produce big size steel stick of Φ140mm and Φ 125mm whose macrostructure and mechanical properties meet the standards, this technics is viable;(2) This rolling technics can make the deformation penetrate to the center of the billet by low temperture and low velocity and big roller diameter and large reduction quantity at every pass and optimum design and arrangement of rollers, which is the key of Hot-Continuous-Rolling technics under small reduction ratio;(3) The sending technics used in Xining Special Steel Co.,Ltd can not use waste-heat of billet adequately, but the sensitive temperature section of A1N or sulphides or inclusions separating out is avoided, creating a favorablecondition for insuring good surface quality of final rolled steel;(4) The Hot-Continuous-Rolling technics under small reduction ratio has a close relationship with the billet quality control and the hot sending process control and the cooling control after rolling.

通过实验研究表明：(1) 235×265mm矩形连铸坯分别采用4.04和5.08的小压缩比热连轧生产工艺，所生产的Φ140mm和Φ125mm的大规格棒材，其低倍组织和机械性能均符合标准要求，该工艺是可行的；(2)本实验所采取的低温低速、大辊径大道次压下量轧制工艺加上轧辊孔型的优化设计与配置，可以使加工变形渗透到铸坯的中心，这一点是实现小压缩比热连轧生产工艺的关键；(3)西宁特钢在红送过程中虽然铸坯余热未能得到充分的利用，但是有效地避开了A1N、硫化物的析出及夹杂物偏析的敏感温度区，为保证最终轧材良好的表面质量创造了有利的条件；(4)小压缩比热连轧生产与铸坯质量控制，热送过程控制以及轧后冷却控制密不可分。

Suffer iron ore to rise in price the message of 19% is driven, bao Gang rises considerably in price of the 3rd quarter hind, four quarters open price of quarterly variety of partial rolled steel to will be reduced, among them the main breed of hot-rolling and cold rolling rolled steel leaves factory base price all relatively 3 quarters drop 200 yuan, fall make an appointment with respectively 5% with 4%.

受铁矿石价格上涨19%的消息推动，宝钢在第三季度价格大幅上涨后，四季度开出的部分钢材品种售价将下调，其中热轧和冷轧钢材的主要品种出厂基价均较三季度下降200元，降幅分别约5%和4%。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。