查询词典 static friction

Professional operating various lathes, drilling machine, combination machine tool, milling machine, boring machine, planer, slotting machine, grinding machine, broaching machine, sawing machine, machine tool accessories, machine tool accessories, machine tool hydraulic parts, pneumatic components, ball screw, friction plate, chuck , card claw, various fixtures, cooling pumps, gear pumps, vane pump, variable pump, all kinds of machine friction plate, oil cups, glib, butter cups, oil cups, flat belts, ribbed belts, timing belt, the center frame, with the tool carrier, dividing head, legislative milling head, all kinds of commonly used air hammer parts, forging machine tool parts, punch parts, adjust the various specifications Sizing Block, V-frame, flat panel.

专业经营各种车床、钻床、组合机床、铣床、镗床、刨床、插床、磨床、拉床、锯床，机床配件、机床附件、机床液压件、气动元件、滚珠丝杆、摩擦片、卡盘、卡爪、各种夹具、冷却油泵、齿轮泵、叶片泵、变量泵、各种机床摩擦片、油杯、油嘴、黄油杯、机油杯、平皮带、多楔带、同步带、中心架、跟刀架、分度头、立铣头，各种气锤常用件、锻压机床配件、冲床配件、各种规格调整垫铁、V型架、平板。

The preparative technique of solid lubricant is cold-press sintering method.The micro-structure , friction surface, lubricant transfer film surface of base material was characterized by SEM; XRD was used to do phase analysis. The degrees of crystallinity of pure PTFE under the different conditions of water cooling, air cooling and furnace-varying cooling were made comparison by XRD. The thermal stability of pure PTFE and solid lubricant was analyzed by DSC-TG; The composition and valence state of elements in the surface of carbon fiber ,solid lubricant before and after friction test and lubricant transfer film were characterized by XPS; The frictional property of solid lubricant was tested by pin and disk test rig .

用SEM表征原料微观结构、摩擦表面及润滑转移膜表面形貌：用XRD进行原料物相分析，及比较水冷却、空气冷却、随炉冷却三种工艺条件下的纯聚四氟乙烯树脂的结晶度；用DSC-TG分析纯聚四氟乙烯树脂及固体润滑剂的热稳定性；用XPS表征碳纤维表面、固体润滑剂摩擦前后表面、润滑转移膜表面的元素组成、价态变化；用销盘式摩擦磨损试验机对固体润滑剂进行摩擦性能测试；采用专用的台架模拟试验机对固体润滑剂镶嵌轴承套与钢轴摩擦副间的摩擦磨损性能进行测定；用莱次偏光显微镜测试固体润滑剂的硬度；用材料试验机测试固体润滑剂的抗压强度等。

Materials of low coefficient of friction are made into sliding bearing which avoids the friction between piston and metal of cylinder body.

低磨擦系数的材料作成滑动轴承，避免了活塞与缸体金属之间的磨擦。

The standard workpiece of the ring compression test by Lee and Altan will be used in this report. The specimen will first annealed to eliminate the internal stress and then through different ways of machining to produce different roughness of surface and different direction of machining marks. The ring compression test with various lubricants and dry friction were carried out at room temperature. The experiment results were drawn on the diagram of friction factor developed by Lee and Altan to compare the influence of the roughness of surface to plastic forming with or without lubricants.

实验将依Lee and Altan压环试验所用之标准压环试片进行，实验试片先经退火处理消除内应力，再将试片以各种不同之加工方式制作成具有不同的表面粗糙度，与不同刀痕方向之摩擦面，再於常温环境下实施乾摩擦与添加不同润滑剂之压环试验，将实验结果所得之数据绘制於Lee and Altan之定剪摩擦系数图中，以比较其不同表面粗糙度对塑性成形之影响，同时也说明在各种不同表面粗糙度下添加各种润滑剂对成形之影响。

During friction, the bondings between DDP and the surface of nanoaprticles break, as a result, the DDP and nanocore adsorb competitively and form a composite film on the friction surface.

在摩擦过程中，DDP和纳米微粒界面的键合断裂，DDP和纳米微粒在摩擦表面竞争吸附并形成复合边界润滑膜。

In this mode,l a grid- section model is introduced to determine the sectional tangent stiffness of reinforced concrete beam element and analyze its degeneration process, and three-node friction-sliding tendon elements are employed to analyze the friction and sliding of external tendons at deviators or sliding blocks.

引入分块截面模型确定钢筋混凝土梁单元截面的切线刚度和分析其退化过程，采用三节点摩擦滑移预应力筋单元分析体外预应力筋在转向块或滑块处的摩擦滑移效应。

The bearing is a kind of important part in the machine for supporting spindles. It is an urgent question for discussion to solve how to reduce the friction between bearings and shafts and how to improve the efficiency. Devisers have done many works to improve the performance of bearings, which include structure, lubricant, subtract friction material, and manufacturing process aspect.

轴承是机器中用来支撑轴的一种重要零件，如何减少轴承与轴之间的动摩擦，提高机械效率，一直是滑动轴承设计者所研究和迫切需要解决的课题，设计者们在轴承结构、润滑剂、减摩材料及制造加工工艺等方面进行了大量的改进工作。

ABSTRACT The bearing is a kind of important part in the machine for supporting spindles. It is an urgent question for discussion to solve how to reduce the friction between bearings and shafts and how to improve the efficiency. Devisers have done many works to improve the performance of bearings, which include structure, lubricant, subtract friction material, and manufacturing process aspect.

轴承是机器中用来支撑轴的一种重要零件，如何减少轴承与轴之间的动摩擦，提高机械效率，一直是滑动轴承设计者所研究和迫切需要解决的课题，设计者们在轴承结构、润滑剂、减摩材料及制造加工工艺等方面进行了大量的改进工作。

Analyses the seal mechanism of sleeve expansion joint and the defect of the current calculation formula of the friction force,presents new formula and illustrates the influence factors of friction force.

分析了套筒补偿器密封机理及目前所用的摩擦力计算公式的缺陷，给出了新的计算公式，并对影响摩擦力的因素进行了说明。

Carbon fiber medium copper graphite composites electrical dry friction friction and wear properties

碳纤维－中铜－石墨复合材料；通电干摩擦；摩擦磨损性能

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切