电弧法

The Fe57-xCo18Nb4Al2Si4B15Smx(x=0-3) amorphous alloy ribbons were prepared byvacuum arc melting and melt spinning. The influences of Sm addition on the glass forming ability, thermal stability, crystallization behavior and magnetic properties of Fe57-xCo18Nb4Al2Si4B15Smx amorphous alloys were studied by X-ray diffraction, differential thermal analyzer and vibration sample magnetometer survey.

摘 要：采用真空电弧熔炼和真空熔融甩带法制备Fe57-xCo18Nb4Al2Si4B15Smx(x=0~3)非晶合金，借助X射线衍射、差热分析以及振动样品磁强计等手段研究稀土元素Sm对制备合金的非晶形成能力、非晶热稳定性、非晶晶化行为以及磁性能的影响。

This paper presents synthetic detecting fault feeder method based on the method of summation of mutual integral of transient current for intermittent arc earth fault and the method of summation of admittance mutual difference and fused current method for steady earth fault.

提出了基于电弧接地故障的暂态电流互积求和选线法和针对稳态接地故障的导纳互差求和选线法和融合电流选线法的综合选线方法。

Sponge zirconium was employed as raw material to prepare wedge-like specimens of Zr52.5Cu17.9Ni14.6Al10Ti5 quinary alloy by a tilt casting method using ladle-hearth-type arc furnace. The effect of active element Sc on the glass forming ability and crystallization kinetic parameters of the quinary alloy is investigated.

摘 要：以海绵锆为原材料，利用浇包型坩埚电弧炉倾斜铸造法制备Zr52.5Cu17.9Ni14.6Al10Ti5五元块体非晶合金楔形试样，研究活性元素Sc对合金玻璃形成能力及晶化动力学参数的影响。

The powder method is found to be satisfactory with a medium quartz spectrograph and an activated a.

采用了交流电弧碳电极粉末法，应用现有的设备(中型光谱仪、不纯碳电极、质量低的照相板)进行试验，找出了比较适当的激发条件和分析线对。

Strontium sulfate was used as the internal standard. Emission spectrography was used. The analytical line pair was chosen Ba307.159nm/Sr293.183nm.

选硫酸锶作为内标，采用发射光谱粉末法，分析线对选用Ba307.159 nm/Sr293.183 nm，试样用直流电弧激发。

The mathematical model to simulate and compute the pressure rise due to the internal arcing fault is described in this paper.

在建立开关柜内部电弧故障数学模型的基础上，采用标准计算法对电弧故障导致的压力上升进行了仿真计算。

Therefore, non-contact temperature measurement technique becomes the development trend of high temperature measurement and will be used more and more widely in measuring the temperature field of weld arc and pool.

非接触测温主要有辐射法和干涉法，由于测温元件不与被测物接触，不会破坏被测物的温度场，通过与数字图象处理技术相结合，能实现温度场的快速、实时测量，全面、形象的反映温度场的动态变化，因此成为高温测量技术的发展趋势，在焊接熔池和电弧温度场测量中得到越来越多的应用。

Welding completed, should be removed arc OFC boards and grinding formation, while the hammer down; Slag : After removal of the entire weld slag, welders self including weld appearance and size, etc.

焊条应与垂直面形成60°～80°角，使电弧略向上，吹向熔池中心；收弧：当焊到末尾，采用排弧法将弧坑填满，把电弧移至熔池中央停弧。严禁使弧坑甩在一边。

The equipment and technology of the high-power twice atomizing arc spray in steel bridge anti-corrosion is investigated,owing to the shorter service life-span,the more frequency maintenance and the higher maintenance expense for steel bridge tar-paved layer.

设计拉法尔一次和扁平扇形二次喷嘴的二次电弧喷涂设备，采用无尘自动喷砂、电弧喷锌和喷涂粘结型封闭剂工艺的防腐蚀工艺技术，制造自动喷涂施工工装对钢桥面进行长效防腐蚀施工，为提高路面铺装层使用寿命提供保障

Several types of processes and characteristics of super-fine SSP are analyzed and compared, they are high frequency plasma spherical method, direct current plasma spherical method, carbon pole electrical arc spherical method, gas burnt flame spherical method, high temperature fused quartz jet and chemo synthesis spherical method.

本文对国内的研究开发现状和国际球形石英粉的生产现状进行了分析研究；分析比较了高频等离子球化法、直流等离子体球化法、碳极电弧球化法、气体燃烧火焰球化法、高温熔融喷射以及化学合成球化法的工艺特点。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。