With gas flow rate increasing, the vibrational temperature at both tip and root decreases, but the decreasing rate at arc tip is faster than that at arc root. 随着气体流量的增大,弧梢处与弧根处的振动温度均下降,但弧梢处下降速率较快。
Before striking an arc, the welder frequently taps the end of the electrode on the ground to break away flux at the tip. 在引人注目的一个弧形,水龙头的焊工经常年底电极地面上打破通量的小费。
The results show that the number of OH radicals decreases rapidly and the number of O atoms follows a rule of increasing firstly and then decreasing from arc root to arc tip. 结果表明:沿等离子体从弧根到弧梢位置,OH自由基数量迅速减少,O原子数量呈现先增多后减少的规律。
Hen various special rolls are machined by NC machine tool, the circular arc center track of the cutter tip must be guaranteed to be a equidistant line of roll outline, the equidistant distance being the radius of the cutter circular arc. 用数控机床加工各种异型轧辊时,必须保证刀具刀尖圆弧中心轨迹是轧辊轮廓的等距线,等距距离为刀具圆弧半径。
The tooth bending stress of the gears cut by the cutters with ordinary circle arc cutter tip, the elliptic cutter tip and the single circle cutter tip are circulated by utilizing the large scale integrated Design Engineering Analysis software& I-DEAS; 使用IDEAS软件分别计算了齿条刀具为普通圆弧形刀顶、椭圆形刀顶及单圆弧刀顶加工出的齿轮的齿根弯曲应力。
It is associated with the forming process of arc channel for the air discharge mode of an electrostatic discharge simulator, and the repeatability of discharge current is influenced by some factors such as the approaching velocity of the discharge tip of simulator, ambient temperature and humidity. 静电放电模拟器空气放电方式涉及到外部火花通道的形成过程,模拟器放电电极接近被测物体的速度、环境温湿度等因素都导致其放电电流重复性差。
Based on the three circle arc tip. 基于三圆弧新型线叶片。
After the arc has been buried, the arc column gas atmosphere is changed and the concentrated arc on the wire tip becomes a covered one, which makes the droplets size smaller and the droplet transfer form change. 潜弧后弧柱气氛改变,焊丝端部的弧根由集中形态扩展为覆盖整个端部形态,使得熔滴尺寸变得细小,熔滴过渡形式发生变化。
The increase of helium content and the resulting arc contraction induce an upward electromagnetic force at the bottom of the droplet that sustains the droplet at the electrode tip. Thus, the more oblate droplet and the longer droplet formation time are produced. 高氦气氛下,随着电弧的收缩,熔滴底部出现向上的电磁力,延长熔滴悬于焊丝上的时间。
When the rotational arc scans the groove, causing the distance between the tip and workpiece ( CTWD) to change regularly, the welding current change in accordance. 它通过电弧的旋转来扫描焊接坡口,引起导电嘴与工件之间的距离(CTWD)有规律变化而引起焊接电信号变化来探测焊炬高度和左右偏差。