Basic Study of Vacuum Arc and Design and Development of the Structures of Vacuum Switch Contact 真空电弧基础现象研究与真空开关触头结构的设计和发展
Based in simulation, the results of the roll force in the contact arc, the friction force in the contact arc, and the relation of the contact friction and the roll force are gained. 得出了轧制力沿接触弧的分布、摩擦力沿接触弧的分布及接触摩擦与轧制力的关系等一些有意义的结果。
Numeric Analysis of the Influence of Opening Speed on Arc Erosion of Contact 分断速度对触头电弧侵蚀影响的数值分析
Under the function of the spring, the elastic airproof ring can generate elastic distortion to cause the circular arc part of the airproof ring to contact with a rollaway nest all the time. 在弹簧的作用下,本实用新型可以产生弹性变形,使密封圈的圆弧部分始终与滚道相接触。
At the very least, the short to ground will cause an arc that damages the ve'hicle at the point of contact. 蓄电池正极与地面短接时至少会产生一个电弧,这将损坏汽车的搭铁部分。
Effect of doping on electrical arc characteristic of WCu electrical contact materials 掺杂对WCu电触头材料电弧特性的影响
The electric arc erosion principle of Cu-W electrical contact materials was studied. 研究了W-Cu系列触头材料的电弧烧损规律。
Double circular arc profile spiral bevel gear is a successful application of point contact in bevel gearing. 双圆弧弧齿锥齿轮是将点啮合制圆弧齿轮传动形式运用到锥齿轮上的成功例子。
The fusion welding, arc erosion mechanics and corrosion mechanics of Ag-W contact are also discussed. 对银钨触头的熔焊特性、电弧侵蚀机理以及腐蚀机理进行了探讨。
Time is* Arc duration and energy of contact breakaway are main parameters for research on contact breakaway. 分断电弧的燃弧时间和能量是触点分断过程研究的重要参数。
Investigation on Fuzzy Evaluation of Electrical Life and Electrical Arc Erosion Characteristics of Contact Materials of Switchgears Used in Coal Mines 矿用开关电器触头材料电弧侵蚀特性与电寿命的模糊评价研究
This paper derived the calculation formulae of induced main curvature of arc surfaced cam, presented a mechanics model for the computation of contact stress of arc surfaced cam and probed into the calculation method of contact stress. 推导了弧面凸轮诱导主曲率的计算公式,给出了弧面凸轮接触应力计算力学模型,并探讨了接触应力的计算方法。
From the characteristics of contact erosion and arc discharge between electrodes, the particularity of the behavior of electric contact during the closing circuit was studied. 本文从接通电路过程中电极间电弧放电特性和触头侵蚀特性出发,研究了低压电器接通电路过程中电接触行为的特殊性。
The technical development of AC contactor, including the intelligent contactor, zero arc erosion of contact, new performance required due to power quality, as well as the new design and technical parameters of contactor were introduced in this paper. 基于智能接触器的发展、触头零电弧侵蚀机理,从电力质量对接触器的新的性能要求以及最新的产品设计和技术参数等几个方面,介绍了交流接触器技术发展动态。
The Arc Erosion of Ag-LaNiO_ ( 3-δ) Electric Contact Materials in DC Condition Ag-LaNiO(3-δ)电接触材料的直流电弧特性研究
The Effect of Fe Doping on Arc Evolution Behavior of Nanocomposite Ag-SnO_2 Contact Alloys Fe掺杂对纳米复合Ag-SnO2电接触合金电弧演化行为的影响
Preparation and DC Arc Erosion Morphology of AgSnO_2 Contact Materials AgSnO2电接触材料的制备和直流电弧侵蚀形貌特征
And also, the electric arc erosion of contact materials is engendered by heat effect of arc and other discharge phenomenon during the open and close of electric contact materials. 还发现触头材料的电弧烧损主要是触点在断开和闭合的过程中,产生电弧或其它放电现象的热效应所造成的。
The arc erosion of CuW70/ CrCu integrated contact is first from the even volatilization of the surface Cu, following by the formation of a W shell on the surface of W skeleton, then the shell flake off, after this, new arc erosion occur. CuW70的烧损先是表层的Cu均匀挥发,接着在骨架的表面形成一层以W为主的壳层,然后壳层剥落,裸露出来的继续烧损,如此反复,导致了触头的烧损。
The Effect of Electrical Arc Forces on Arc Erosion Morphology Features of Contact Surfaces 电弧力对触头表面形貌特征的影响
The structure and component change of contact surface were studied by SEM after arc erosion. The physical metallurgy process of contact surface was analyzed during arcing. 采用SEM观察触点表面经电弧侵蚀后结构与成分的变化,分析触点对电弧响应的物理冶金过程。
The experimental model designed was used to measure arc voltage and current waveforms of alloyed contact in resistive load circuit and inductive load circuit on the condition of room temperature; 应用自行设计的实验模型,在室温条件下,并在电阻性电路和电感性电路中,测量了金合金触点的电弧电压和电弧电流波形;
The energy input from arc to contact surface is a decisive factor on erosion of contact materials. 电弧对触头表面的能量输入是影响触头侵蚀量的决定因素。
TiN films were prepared on copper based Cr substrates by multi arc ion plating. Interface of TiN in contact to Cr/ Cu and surface properties were investigated by surface analysis technique. 使用多弧离子镀在铜基镀Cr的衬底上制备TiN薄膜,借助表面分析技术研究了不同温度下离子镀TiN与Cr/Cu接触的界面与表面性质。
In this paper, an accurate equation to the arc of contact in rolling is established and transformed into explicit function by using the root of quad-ratic equation. 建立了轧制变形区接触弧精确方程并由二次方程求根公式将其化为显函数。
Meanwhile, the cladding of formation between metal vapor and copper-matrix can reduce contact resistance at the contact zone and the probability of electric arc occurring, and thus reduce electrical sliding wear rate of the contact strip. 同时金属蒸气与铜基体形成的合金覆层降低了接触区的接触电阻,减小了电弧产生的几率,从而使得滑板的载流磨损率降低。
In addition, arc discharge power and off-line rate are decreased with the increase of contact pressure. The contact pressure in a certain values has a little bit effect on the current-carrying efficiency. 随着接触压力的增加,电弧功率和离线率都有所下降;在一定的范围内,接触压力的大小对载流效率的影响不大。
These studies on arc erosion resistance mechanisms can provide a scientific basis for arc extinguishing researches and their practical applications of resin-type contact strip. 此抗电弧侵蚀机理为树脂型滑板材料的抑弧研究和实际应用提供了科学依据。