轧制

A rigid-plastic FEM program for the analysis of working piece deformation in single pass hot bar rolling was developed. Combining with the analytical model, the strain and strain rate of hot rolled bearing steel GCr15 bar during roughing and intermediate rolling processes was calculated and compared with the real values.

应用刚塑性有限元法开发了轧制过程单道次变形分析的通用程序，与解析法结合对实际热连轧生产GCr15棒材的粗轧和中轧过程中的应变－应变速率进行了计算值与实际应变的对比。

In order to analyze the effect of friction force on contact reaction inner bearing during universal rolling of H-Beam,2D finite element model of bearing block was established using numerical simulation method.

为了分析万能法轧制H型钢的过程中，轴承内部摩擦力对滚动体接触反力的影响，利用有限元的方法建立了轴承座受力的二维有限元分析模型。

This paper presented the mechanism of fretting fatigue failure that happened on the contact surfaces between sleeve and roll neck of oil-film bearing under the rolling load.

研究了油膜轴承锥套与辊颈接触表面在轧制载荷作用下发生微动疲劳损伤的力学机理。

The gap between the tube blank top tray and intermediate bed slider face influences the tube forming qualit...

本文介绍了LD-120五辊冷轧管机轧制的工作原理及其主要部件性能，架分析了管坯顶盘及活动托与中间床身滑轨工作面之间的间隙的影响因素及调整方法，并通过计算解决了间隙的调整量问题。

And a relative preparation is characterized in that according to mol ratio (0.8-0.975):(1.8-1.95):(0.010-0.15):(0.010-0.15) to prepare and mix Mg powder, B powder, C nanometer powder, and SiC nanometer powder uniformly to be filled into an iron tube or iron-copper composite tube to be sealed, rotationally forges, draws and rolls to obtain MgB2 superconductive material containing C and SiC nanometer powder, or tablets the raw powder mixed uniformly via a tablet press, to obtain MgB2 superconductive block containing C and SiC nanometer powder, arranges obtained band or block in a vacuum furnace, vacuums and fills argon gas, keeps temperature for 0.2-3h at 600-1200DEG C, and obtains MgB2 superconductive material containing C nanometer powder and SiC nanometer powder.

制备这种MgB 2 超导材料的方法，其特征在于，将Mg粉，B粉，C纳米粉，SiC纳米粉按照摩尔比(0.8-0.975)∶(1.8-1.95)∶(0.010-0.15)∶(0.010-0.15)配制并混合均匀，装入铁管或铁铜复合管中密封后，按顺序先后进行旋锻、拉拔、轧制，得到含C和SiC纳米粉的MgB 2 超导线材；或者将混合均匀的原料粉用压片机进行压片，得到含C和SiC纳米粉的MgB 2 超导块材；将得到的线带材或块材放置真空炉中，抽真空后充入氩气，在600℃-1200℃保温0.2-3小时，最终得到含有C纳米粉和SiC纳米粉的MgB 2 超导材料。

The design of the chain plate rolling machine structure is simple and inexpensive to use and in line with the design requirements, mainly for the processing chain for the volume of the material plate designed.

本次设计的链板轧制机结构简单、使用价格低廉，并且符写设计合设计要求，主要针对用来加工链条板的卷带料而设计的。

The Design of this include: the selection of motor, transmission part of the design, the design of speed reducer, shaft components, design, cabinet design, the main chain plate rolling machine, rack design, including reducer such as lubrication and sealing.

本次设计的设计主要包括：电动机的选取，传动部分的设计，减速器的设计，轴系部件的设计，箱体的设计，链板轧制机主体，机架的设计，其中包括对减速器的润滑和密封等。

The hot coil box has very high standard for the control. If we have troubles then it is easily to pile steel.

U/ L。 _8 E- Q3 |1 b' e3 l4 }莱钢1500mm轧机热卷箱是轧制过程中的一个中间设备，有输送热带钢直接进行连轧的作用。

The texture of the cold-rolled sheet composite consists of three weak components, i.e.

冷轧板抗拉强度的降低是轧制时产生的大量做裂纹所致。

Based on copper plastic processing features, the metal rolling theory and the practical procedure, the paper presents the design method of the copper bar rolling mill pass system and the calculation methods of the factors. Some key factors, such as the elongation factor and filling metal degree through the pass system at every rolling segment, and some dynamic factors are calculated for small and middle copper bar rolling mills.

根据铜加工塑性加工特性及金属连轧理论，结合生产过程，文章提出了中小直径铜杆连轧机整个孔型系统设计方法和参数计算方法，计算了各轧制道次延伸系数、各道次孔型金属充满度等关键参数，并对连轧机中的动态参数进行了计算。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了