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friction mode
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  摩擦方式
     This article introduces the approach to solve the problem of quality existed in course of forming tension due to conventional friction mode by divided static-friction instead of the initial unitary sliding-friction.
     本文介绍了用分散的静摩擦替代原来整体的滑动摩擦 ,解决传统摩擦方式建立张力易出现质量问题的张力机改进方法
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  相似匹配句对
     On Friction
     谈谈摩擦力
短句来源
     Friction Compensation
     摩擦补偿(象限补偿)
短句来源
     Multi-mode Genetic Algorithm for Correction of Pipe Friction Factor
     多工况的遗传算法校正管道摩阻系数
短句来源
     Parking mode;
     停车场设计模式;
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     Mistakes of Mode
     众数之误
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  friction mode
It has been found that in friction mode process (FMP), the lower the crystallite size, the lower the lattice strain of the prepared alloy.
      
Friction mode and shock mode effect on magnetic properties of mechanically alloyed Fe-based nanocrystalline materials
      
The squaring tube process is examined by an incremental elasto-plastic finite-element method based on an updated Lagrangian formulation in which a sliding-sticking friction mode is specifically considered.
      
Lubricant flow in pressure pipes during wire drawing in a hydrodynamic friction mode
      
In the weak friction mode, overcoming the entropy barrier generally leads to a nonexponential kinetics.
      


The deformation mode and mechanism on two kinds of sandstone (feldspar sandstone and quartz sandstone) were experinmentally studied under confining pressure up to 700 MPa with strain rate of 10-4/s.The transition field from brittle to ductile behavior in intact samples is respectively 200-400MPa PC and 250-350MPa PC for feldspar sandstone and quartz sandstone.A high pressure embrittlement phenomenon, however, appears above 600MPa PC in feldspar sandstone. The transition boundary from stable sliding to...

The deformation mode and mechanism on two kinds of sandstone (feldspar sandstone and quartz sandstone) were experinmentally studied under confining pressure up to 700 MPa with strain rate of 10-4/s.The transition field from brittle to ductile behavior in intact samples is respectively 200-400MPa PC and 250-350MPa PC for feldspar sandstone and quartz sandstone.A high pressure embrittlement phenomenon, however, appears above 600MPa PC in feldspar sandstone. The transition boundary from stable sliding to stick slip in sawcut samples is 200MPa PC and 150MPa PC respectively for two kinds of sandstone.Microscopic observation results show that all of these deformation modes result mainly from the cataclasis mechanism in different grade. Cataclastic faulting results in brittle failure under low confining pressure. Homogenized cataclasis (cataclastic flow) inter and intra grains results in ductile flow. The relocalization of microcracking results in the embrittlement up to high confining pressure. The transition from brittle to ductile behavior is mainly due to the developing from faulting to homogenized cataclasis. As to the friction characteristics, the stable sliding is accompanying grains gliding on sawcut surface. The stick slip involves grains crushing severely. The transition from stable sliding to stick slip is between the both situation. Sometimes it is difficult to distinquish the different microstructural features for different friction modes.In this paper we also discussed the effects of mineral compositions on deformation mode and mechanism of rocks, the extension of brittle behavior in rocks, the two transitions from brittle to ductile and from ductile to embrittlement, the relation between cataclasis and deformation modes as well as the confusion of nomenclature in application to geology.

本文讨论了围压高达700MPa的条件下,发生实验变形的长石砂岩和石英砂岩的变形模式和变形机制。完整长石砂岩的脆延过渡带在200—400MPa,完整石英砂岩的脆延过渡带在250—350MPa,长石砂岩在600MPa围压以上出现高压脆化现象;两类切口岩石的稳滑粘滑过渡界限分别是200MPa和150MPa。不同的变形模式主要起因于程度不同的碎裂机制。文中还对矿物成分的影响、脆性行为之延伸等有关问题进行了简要讨论。

In this paper the method and criteria for identifying friction modes (lubrication states) of mechanical face seals by using the fluid film load carrying ratio and specific film thickness was presented. On this basis the theoretical analysis of friction characteristic (f-G curve) are discussed. The formulae for calculation of friction coefficient by using the film load carrying ratio was derrived and calculating examples were given. It is useful for seal practice.

文中提出利用流体膜承载比和相对膜厚判断机械密封摩擦状态的方法和准数。从理论上分析了常用摩擦系数与工况参数关系的摩擦特性(f-G曲线),导出用流体膜承载比计算摩擦系数的公式并举例说明,可供实际使用。

AISI304 stainless steel samples were treated with nitrogen ions by high frequency low voltage plasma immersion ion implantation (HLPIII) technique. The friction and wear behaviors of the modified layers on the steel surface were examined on a pin on disc test rig. The phase composition, depth profile of N, and the wear mechanisms of the modified layers were investigated by means of X ray diffraction (XRD), Auger electron spectroscopy (AES), and scanning electron microscopy (SEM). As the results, HLPIII...

AISI304 stainless steel samples were treated with nitrogen ions by high frequency low voltage plasma immersion ion implantation (HLPIII) technique. The friction and wear behaviors of the modified layers on the steel surface were examined on a pin on disc test rig. The phase composition, depth profile of N, and the wear mechanisms of the modified layers were investigated by means of X ray diffraction (XRD), Auger electron spectroscopy (AES), and scanning electron microscopy (SEM). As the results, HLPIII treatment substantially improves the friction and wear behaviors of AISI304 steel and such an improvement is greatly dependent on the treatment temperature. The modified layer on the steel surface treated at 400 ℃ is considerably thicker than that at 300 ℃. The thicker modified layer containing expanded anstenite phase in near surface area accounts for the increase in the load bearing capacity of the materials and leads to change in the friction modes. Hence the friction coefficient is considerably decreased and the wear resistance increased by a factor of 2 10 for the sample treated at 400 ℃.

采用高频低电压等离子体浸没离子注入 (HL PIII)技术对 AISI30 4不锈钢表面进行了氮离子注入处理 ;用球 -盘摩擦磨损试验机考察了注入处理后钢表面改性层的摩擦磨损性能 ;用扫描电子显微镜 (SEM)、俄歇电子能谱仪(AES)和 X射线衍射仪 (XRD)考察了改性层的相组成、N元素的深度分布及磨损机理 .研究结果表明 :HL PIII处理能够显著提高样品的摩擦学性能 ,且其摩擦学性能对温度有较大的依赖性 . 40 0℃下处理样品的改质层明显比30 0℃下处理样品的厚 ,表面形成了较厚的膨胀奥氏体 ,从而提高了材料的承载能力 ;同时试样摩擦状态发生变化 ,导致材料摩擦系数减小 ,耐磨性提高约 2~ 1 0倍 .

 
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