焊接的

Shanghai Witt of the welding equipment Manufacturing Co., Ltd., the production is a power inverter welding and welding equipment based private high-tech enterprises.

上海威特力焊接设备制造有限公司，是一家以生产逆变焊接电源和焊接设备为主的民营高科技企业。

Comparing with common side hybrid laser-arc welding, coaxially combined laser beam and arc can provide a symmetrical circular thermal source on the workpiece surface, which is convenient for 3-D welding.

与目前常用的旁轴激光-电弧复合焊相比，激光-电弧同轴复合可以在工件表面提供对称热源，焊接质量不受焊接方向影响而适于三维焊接。

Welding seams were tested and experiment of laser welding of DOGAL 800DP zinc coated high strength steel was performed using orthogonal test method.

采用正交方法优化试验方案，对DOGAL 800DP 镀锌高强钢进行激光焊接试验，并对激光焊接试样进行了多种焊接质量的检测。

All welds shall be made using the Tungsten Inert Gas welding process using tungsten nonconsumable electrodes and 100 percent commercially dry and pure argon gas for internal pipe purging and for electrode shielding.

所有焊接点的焊接必须采用钨极电弧焊之焊接方法，使用钨非自耗电极及100％干纯商品氩气用作内部清洗与电极保护。

For fatigue prediction of welded structure is faced not only the general problem of unwelded structure, but also the special difficulty resulted from weld arts. So, study of fatigue acts for wagon body is very important.

由于焊接结构的疲劳寿命预测不仅要面对非焊接结构必须面对的一般性困难，而且还要面对焊接工艺本身所导致的特有的困难，因此，研究我国铁路车辆焊接结构的疲劳行为有重要意义。

The res ults of arc-starting and welding tests for titanium alloy are also presented in detail in the paper . Tensile strength of welding joints has reached the demands of we lding standard, esp. no spatters on back weld are obtained in contrast w ith EBW.

文中详述了空心阴极焊枪设计、引弧试验情况及钛合金焊接工艺试验，结果表明焊接接头拉伸强度达到标准的要求，特别是与电子束焊相比，焊缝背面无焊接飞溅。

The general process of reverse engineering for the punch block of a welding die for shadow mask was stated,including the digitization process of solid mass by using three-dimensional measuring machine,the 3D modeling and surface reconstruction by using Pro/E.

以荫罩焊接模凸模为例介绍了逆向工程的一般过程，采用三坐标测量机进行了实体的数字化过程，使用Pro/E进行了荫罩的3D建模和曲面重构，完成了荫罩焊接模凸模设计，并用Mastercam进行了荫罩焊接模凸模的加工模拟，最后安排工艺流程完成了荫罩焊接模凸模的实际加工。

Wagon body is a complicated weld structure. While physical wagon can not used to do fatigue test, how to make anti-fatigue design has been discussed in this paper. One coal hopper wagon has been taken as an example to study about anti-fatigue design of the wagon. First of all, based on finite element technique and the theory about how to predict fatigue life of weld structure, the technology route and key technique are given as well, which is based on AAR standard about weld structure wagon fatigue life predicted.

论文认为货车车体是复杂的焊接结构，为了使货车车体焊接结构抗疲劳设计在产品的图纸上就能卓有成效地展开，论文以新型煤炭漏斗车为研究对象，对煤炭漏斗车车体抗疲劳设计开展了一系列研究：首先，基于有限元算法和焊接结构寿命预测的疲劳理论，给出了基于北美铁路协会AAR标准的货车车体焊接结构寿命预测的技术路线及关键技术。

Based on these, pulse flash butt welding function was carried out with the use of the method of joining proportional control and ON-OFF control and current feedback. Welding prcess was automatically controled by Programmable Logical Computer.

在此基础上，以焊接电流作为反馈参数，采用比例控制与ON-OFF控制相结合的方式实现了钢轨脉冲闪光焊功能；采用可编程控制器控制焊接过程，实现焊接过程自动化。

Now, the technology of flash welding has been applying in the engineering of rail welding progressively. The temperature field of flash welding plays a crucial role in the quality of welding joint, so the study of welding temperature field is significant to ensure the traffic safety and quality of welding and reduce the cost of welding.

目前，闪光焊技术在我国钢轨现场焊接工程中的应用正日益增多，由于钢轨闪光焊的焊接温度场对接头质量起着决定性的作用，因而开展钢轨闪光焊温度场的研究，对于控制焊接质量，降低焊接成本，提高列车运行安全具有十分重要的意义。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。