焊接

This article analyzes the reason and influence of Magnetic blow on welding arc during the welding process.

文摘：分析了磁偏吹在焊接过程中对焊接电弧的影响以及产生原因，通过调整和改善焊接电弧周围磁场分布，并采用反消磁法，克服和消除了磁偏吹对焊接电弧的影响。

We will achieve our objective by developing an integrated system that will continuously measure characteristics of the weld, the arc, and the metal transfer mechanism and use these data to adjust the weld current, voltage, speed, and arc concentration.

我们将通过开发一个集成的系统来实现我们的目标，这个系统将连续测量焊接性能、电弧和金属移位机制，并使用这些数据调整焊接电流、焊接电压、焊接速度和电弧密度。

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。

In order to understanding the punching and pressing performance of Q450NQR1 high strength anti-corrosion steel and satisfying the requirement of C76 special coal wagon in the stage of technical preparation, and to establish the right punching and press process based on existing machinery.

其二通过焊接工艺试验，选取了与之匹配的焊接材料，确定了合适的焊接工艺参数，成功地焊接了使用该钢材的C76 型专用运煤敞车车体钢结构。

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。

Germany- made plasma cutter and welder (line welding machine and circular welding machine, one set for each); 12 argon welding machines; 4 electric welding machines; 1 spot welder; 3 CO2 welders; 2 oil buffer machines; 2 motor rolling machines; 8 motor wheels; 6 overhead travelling cranes; 3 pressure testers; water- pressured machine for making tank dish cover; welding beads stress reliever; computers for business and graphic design 3 sets for each; stainless steel tube automatic welder and steel tube cutter each for 2 sets.

德制自动电离子切割焊接机组（直线焊接及圆周焊接机各一套）氩焊机12 台、电焊机4 台、点焊机1 台、CO2焊机3 台、油压机床2 台、电动卷圆机2 台、电动滚轮8 台、电动天车6 台、钻床3 台、试压机3 台、卫生桶制造专用水压成型设备壹套、焊道应力消除机1 台、业务用电脑及图面设计用电脑各3 套、不袗管自动焊接机及钢片切管机各2 套。

The test results show that the crispest HAZ occurs in the process of welding of the 14MnNbq steel on the first heat circulation submerged welding overheat zone and the second heat circulation submerged welding overheat zone plus the not entirely re crystallized zone. The 14MnNbq steel has a tendency of being crisper due to overheat than the SM490C steel is. In order to ensure the toughness of the welding HAZ′s, the welding wire capacity should be properly controlled during welding.

由试验结果表明，14MnNbq钢焊接HAZ最脆区出现在一次热循环的埋弧焊过热区及二次热循环的埋弧焊过热区+不完全重结晶区；14MnNbq钢比SM490C钢有更强的过热脆化倾向，为确保焊接热影响区韧性，焊接时应适当控制焊接线能量。

With traditional welder art photograph is compared, the laser beam welding after optimizing receives technology satisfying tall solder while intensity asks, rose to solder greatly efficiency, provided main technique support to improve derv engine performance.

和传统焊接工艺相比，优化后的激光焊接工艺在满足高焊接强度要求的同时，极大地提高了焊接效率，为提高柴油发动机性能提供了重要技术支持。

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。

The speed of produce tin,the time return tin,the interval time of produce tin can be adjusted steady and with tin back adjustable features,which can reduce the waste of welding 3 the mode of produce tin mode: automatic and manual produc tin for the selection of tin (produce tin manually can match a tin foot switch or manual switch out of tin), and the number of the tin can be set 4 all of the settings using DIP switch settings, easy to operate; 5 anti-static design can avoid sensitive electronic components damaged due to static electricity and 6 optional universal bracket solder 7 simple and easy welding to reduce the welding welding achieve the desired effect of waste, improve efficiency significantly.

产品说明Product description；1）采用步进电机，出锡精确且可灵活控制。2出锡速度、出锡量、回锡时间，出锡间隔时间均可调节且稳定，且设有可调的回锡功能，以减少焊接的浪费3出锡模式：全自动出锡与手动出锡可供选择（手动出锡可选配脚踏出锡开关或手动出锡开关），且出锡次数可设置4所有设置采用拨码式开关设置，方便操作；5防静电设计，能避免敏感电子零件因静电而受损坏6可选装万能焊锡支架7焊接简单容易、减少焊接的浪费达到理想焊接效果，工作效率显著提高。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐