焊接的

The defects, such as blowholes and incomplete penetration, occasionally appear in the welding process. These defects can affect the quality and the security of products. Therefore, defects detection in welding seam is extremely important.

在工业探伤领域，由于焊接过程出现的各种问题，会导致焊缝中含有气孔和未焊透等缺陷，影响产品的质量和安全，所以焊接图像中缺陷目标的检测十分重要。

Our company is both at home and abroad a few casting and welding-type fire one gun manufacturers, we can provide customers around the world aluminum alloy, copper alloy, cast iron casting type fire artillery, can also provide carbon steel, stainless steel welding-type gun fire.

我公司是目前国内外少数几家兼具铸造和焊接型消防炮厂家之一，我们可以向全世界的客户提供铝合金，铜合金，铸铁的铸造型消防炮，也可以提供碳钢，不锈钢的焊接型消防炮。

Aim at the problem of internal quality testing of high-pressure thin-wall welded steel cylinder pipe workpiece,the advantages of the method of using ultrasonic plate wave are obtained through the comparison of five general nondestructive testing methods by the paper.

以高压薄壁焊接钢筒检测为例进行了现场试验，并以X射线检测复测来确认板波检测的可靠性，对比试验结果证明，超声波板波法可有效的发现高压薄壁焊接钢筒焊缝内部缺陷，并可实现快速在线检测，具有广阔的应用前景

First of all, the concept of S-N curve and the procedures of p-S-N curve fatigue test, data processing were introduced. And then, these procedures were taken into practice on 4 kinds of aluminum alloy welded joints: corner joint, butt joint, cruciform joints and double-sided lap joint.

文中首先介绍了S-N曲线的概念和p-S-N曲线疲劳试验方法和数据处理方法，并按照这些方法对角接、对接、十字接和双面搭接四种铝合金焊接接头试样进行了疲劳试验，得出了这四种焊接接头的中值S-N曲线和置信度为95%，存活率分别为90%、99%下的p-S-N曲线及其方程。

1 Laid on the observation points, the next gate in the first paragraph and the chamber are in side-dock-type pier and construction of a wide bottom seam laid 8 to each end of the settlement within 24 observation points nails; chamber 14 Fu wall segments are in lock wall at both ends of the floor laid four nails into account the settlement of 56 observation points; settlement nail making use of 40cmФ18 rebar welded copper top round hat hemisphere processed, buried, when coupled with oblique bars welded to the end of plate surface layer and vertical reinforcement, the top highlight the concrete surface, about 1.5 ~ 2.0cm in order to guarantee points are solid.

3.2.1观测点的布设上、下闸首及闸室坞式段均在边墩底板及施工宽缝的两端各布设8个沉降钉计24个观测点；闸室14节扶壁段均在闸墙底板两端各布设4个沉降钉计56个观测点；沉降钉的制作采用40cmФ18螺纹钢顶端焊接镀铜半球圆帽加工而成，埋设时配以斜筋焊接在底板面层及竖向钢筋上，顶端突出砼表面1.5～2.0cm左右，以保证点位稳固。

It is doubtless that the research on damage behavior and ductile fracture of weldments with mechanical heterogeneity is practically significant for the assessment of the integrity of welded structures.

研究焊接接头这种力学性能不均匀体的损伤行为及韧性断裂，对于焊接结构的安全性评定，具有重要的理论与工程实际意义。

The study of the fusion-welding process covers various important aspects such as the metallurgical properties of the weldments, the effect of arc temperature on the development of post-weld residual stresses, distortion in the base material, the physics and behaviour of the arc with the formation and maintenance of the weld pool.

研究聚变-焊接过程涉及各种重要的方面，如冶金性能该焊接，其效果的电弧温度对发展焊后残余应力，变形在基地的材料，物理和行为电弧与形成和维持该焊缝池。

the intake tower is located in the traffic bridge on the left bank power station gongboxia imports spillway tunnel, bridges with a rib plate for the t-beam, long 20m, bridge steel welded joints has become one of the difficulties of the installation: space narrow, steel-intensive, welding operation difficulties.

进水塔交通桥位于公伯峡电站左岸泄洪洞进口，桥梁为带有肋板的t型梁，长20m，桥梁钢筋接头的焊接成为安装的难点之一：空间狭窄、钢筋密集、焊接操作困难。

The effects of electroplated Ni layer and electroless plated Ni-P layer on the diffusion behavior in Sn-Ag/Cu solder joint were studied. The results by EPMA analysis showed that the electroless plated Ni-P layer acted as a good diffusion barrier between Sn-Ag solder and Cu substrate. However, the electroplated Ni layer can not hinder the inter-diffusion and reaction between molten Sn-Ag solder and Cu substrate when reflowing, and there was a layer of IMC (Cu6Sn5) at interface of Sn-Ag/C u solder joint.

摘 要：研究了电镀Ni层和化学镀Ni-P合金层对Sn-Ag/Cu焊点扩散行为的影响，电子探针分析表明：化学镀Ni-P合金层能很好地阻止Sn-Ag/Cu焊点在焊接过程中的Cu，Sn互扩散和相互反应；而电镀Ni层则不能阻止Sn-Ag/Cu焊点在焊接过程中的Cu，Sn互扩散和相互反应，界面反应产物仍以Cu6Sn5为主。

The tower plate utilizes stainless steel double bottom plates welded main beam ,by which welding deformation can be reduced,straight linear degree can be guaranteed, main beam rigidity as well as entire beam stability can be strengthened to resist horizontal orientation live load,and tower height can be lowered as well.

塔盘用不锈钢双腹板焊接主梁，能够减小焊接变形、保证主梁的直线度、增强主梁抗水平方向动载荷的刚性和主梁的整体稳定性、降低塔体高度。

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％。