焊接接头

Therfore, in this thesis, a method combining stochastic process theory with experimental results is used for systematically investagating the FCP from the weld toe of butt joints.

实际焊接接头的应力集中，焊接残余应力，近缝区组织和力学性能等因素的随机特性必然导致疲劳裂纹。。。

In addition, longitudinal or transverse residual stress distribution of welded joint can be improved by using of trailing peening.

此外，焊接接头的纵向及横向残余应力分布状态均有了很大程度的改观，应力水平相对较低，有利于焊接结构的尺寸稳定。

Construction practice proved that weld jointer test results by adopting these two kinds of welding combination can both meet the corresponding specification requirements,but these two methods have their different characteristics and applicability.

实际施工应用表明，两种焊接组合焊接接头检验结果均满足相关规范要求，但各有其不同特点及适用性。

When the Al-Mg-Zr-Sc welding wire was used as filling material, the grains of welding seam were refined obviously, and the weld joint was greatly strengthened by forming of fine equiaxial grains layer in fusion zone.

结果表明：采用两种焊丝焊接的Al-Mg-Sc合金薄板的焊接接头强度系数均大于0.9。

All welded joints required to be gastight or subject to submergence in any location shall be provided with continuous welds along all contact edges except as prohibited in Article 8.8.5 of the referenced AWS code.

除了参照AWS条例8.8.5中禁止以外，所有的焊接接头都要求不漏气，或者对涉及到的位置进行连续深埋焊接。

And for brazing, the quality of welding connector has much to do by thewelding temperature in the welding course.

而对于钎焊来说，焊接接头质量的好坏，与焊接过程中的温度有很大的关系。

Experiment results show that though the grains of the heat-affected zone are seriously coarsened due to the effect of welding thermal cycle, there is no softened zone and the strength of the welded joint doesn′t decrease because the transformed microstructure is different from the original one.

结果表明：经过焊接热循环的作用，虽然热影响区的晶粒明显粗化，但由于所获得的二次组织形态与钢筋原始组织不同，热影响区未发生软化，也不存在焊接接头强度下降的问题。

Experiment results show that though the grains of the heat-affected zone were seriously coarsened due to the effect of welding thermal cycle, there is no softened zone and the strength of the welded joint doesn't decrease because the transformed microstructure is different from the original microstructure of the rebar.

结果表明：经过焊接热循环的作用，虽然热影响区晶粒明显粗化，但由于所获得的二次组织形态与钢筋原始组织不同，热影响区不发生软化，也不存在焊接接头强度下降问题。

An investigation in details is conducted on factor which influence on the peened affection.

在各种焊接结构实际制造和使用过程中常有一些问题，可能对超声冲击法提高焊接接头疲劳强度的效果有较大的影响。

Compared with arc welding, gas welding flame temperature is low, heat dispersion, heat slowly, so productivity is low, the workpiece deformation of serious, large welding heat affected zone of welded joint quality.

它与电弧焊相比，气焊火焰的温度低，热量分散，加热速度缓慢，故生产率低，工件变形严重，焊接的热影响区大，焊接接头质量不高。

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