焊接

The results indicate that the welding temperature is the most important factor for diffusion welding of composite. When the welding temperature range is between solidus and liquidus, the peak joint strength can reach 170 MPa.

指出焊接温度是复合材料扩散焊接最重要的工艺参数，焊接温度介于基体合金固相线与液相线之间，接头强度最高值可达到170 MPa；接合界面的氧化膜阻碍基体原子的扩散，是复合材料接头强度下降的原因之一。

Arc welding power source is important part of welding system. It is difficult to effectually evaluate dynamic characteristic of arc welding power source in the field of welding.

弧焊电源是焊接系统的重要组成部分，将直接影响焊接过程的稳定性及焊接工艺性能。

This operation is accurate, it has stable function firm welded point and without welded tracks Not only welding speed is fast but also it is easy to learn and operate.

这次行动是正确的，它有稳定的职能坚决焊接点及无焊接轨道，不仅焊接速度快，而且它非常容易学习和操作。

The main loop of the welder uses a thyratron transistor non-contact switch circuit ,quick and reliable close time ,accurate timing of welding, high precision of welding ,good repeatability, bring a high quality welding.

焊机主回路采用晶闸管无触点开关电路，关断时间快、可靠，焊接定时精确，焊接精度高，重复性好，可实现高品质焊接。

Because the weld is stacking, the transverse stress on the bottom surface of plane will become very high, so much as exceeding the longitudinal stress. The residual stress in steel structures can directly influence their ability of bearing loads.

焊接残余应力的存在，会直接影响到钢结构的承载能力，为了保证焊接结构的安全可靠，准确的推断焊接过程中的力学行为和残余应力是十分重要的课题。

LTHJ-SUPER-A2 welding manipulator automatic recovery machine(Condensed air is needed0.4-0.8Mpa) This system is set for welding manipulator,special cylindrical welding tools or difficult welding .It adds super negative pressure wind pump on inner side offlux cylinder,so that in the welding process it can absorb unmelted flux directly into cylinder and place into a small hopper.Open the valve of small hopper and put flux onto work piece,then you can put it into reprated usage.

LTHJ-SUPER-A2型操作机正压自动回收机（需压缩空气0.4-0.8Mpa）本系统是为一体超强新型的操作机或外圆焊接特制工具、高难度的焊接而设置的，它利用压缩空气，将在焊接过程中尚未溶化的焊剂直接吸收到桶内，放置到小料斗中，打开小料斗阀门把焊剂放到工件上，进行往复使用。

Welding control system comprises hardware and software, using C language welding program, and it reduces difficulty of control system exploitation. Scheduling control, sampling disposal of feedback signals and digital PI modulation are achieved through program control, and this controls veraciously welding process.

焊接控制系统由硬件和软件两部分组成，焊接程序采用C语言编写，降低了控制系统软件开发的难度，通过程序控制实现时序控制、反馈信号的采样处理及数字PI调节，对焊接过程进行准确的控制。

In this paper the weldability of magnesium was analyzed.

分析了镁合金的焊接特点和焊接性，指出了目前镁合金熔化焊接时的难点。

The effect of heat transfer characteristics on the weldability...

这种传热特性对贝氏体钢轨的焊接性有明显的影响；根据计算及试验结果，贝氏体钢轨的焊接应当采用比珠光体钢轨更小的焊接热输入参数。

To keep the stability of welding arc is an important task in welding automation field, when the distance between the welding torch muzzle and the surface of the work piece changes.

在MIG焊接过程中，当焊枪喷嘴与工件表面的距离发生变化时，如何保证焊接弧长的稳定是焊接自动化领域研究的重要课题之一。

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