焊接

A new technology is put forward which uses weld with trailing impactive rolling to control the welding stress and distortion of thin component and to prevent welding hot cracking.

提出了随焊冲击碾压控制薄壁构件焊接应力变形、防止焊接热裂纹的新方法，其原理为：通过前后冲击碾压轮，分别对焊后尚处于高温状态的焊趾和焊缝区金属施加一定频率的冲击碾压力

The fracture features and interfacial microstructures of explosively welded Pt/Ti and postrolling progress have been studied by TEM, SEM, XRD and EDXA. The explosive welding interfacepossess some inconsecutive new phases. The phases are PtTi, PtTi3,Pt5Ti3 and so on, which havehigh strength. Tensial fracture position is located at the hoe of Pt.

用扫描电镜、能谱、X射线衍射仪对Pt／Ti爆炸焊接及爆后轧制双金属断面形态与界面结构进行的分析表明：爆炸焊接界面上有断续的新生化合物层，此层是由PtTi、PtTi3、Pt5Ti3等化合物组成的混合组织，有很高的结合强度，强制拉断在界面Pt侧。

ABSTRACT In order to effectively dominate the weld formation during pulse tungsten inert gas welding of aluminum alloy in automatic p...

在铝合金脉冲TIG焊的自动化焊接过程中，保证焊缝稳定成形的有效措施是在获取焊接过程实时信息的基础上实现闭环控制。

At the same time, is also the stainless steel industry earlier through ISO9001 (2000) international quality system certification of enterprises, with advanced equipment, scientific management and operation of a very modern concept, products awarded as "China Famous" designation, and the Ministry of Construction in China Building Decoration Association of Architectural Ironmongery identified by the Commission as "project selected products", all products comply with CJ; T 151-2001 "thin-walled stainless steel pipes" GB12771 "fluid steel pipe welded stainless steel" GB; T 18705-2002 "decorative soldering Stainless Steel Pipe ", GB; T19228.2-2003" stainless steel compression-type pipe fittings to connect with thin-walled stainless steel tube "and other standards.

同时，也是不锈钢行业较早通过ISO9001（2000）国际质量体系认证的企业，凭着先进的设备、科学的管理和极具现代化的经营理念，产品荣获《中国名优产品》称号，并被建设部中国建筑装饰协会建筑五金委员会确认为"工程建设选用产品"，所有产品符合CJ；T 151—2001《薄壁不锈钢水管》 GB12771《流体输送用不锈钢焊接钢管》GB；T 18705-2002《装饰用焊接不锈钢管》、GB；T19228.2—2003《不锈钢卡压式管件连接用薄壁不锈钢管》等标准要求。

The positioning of bar axis with spherical surface was introduced as well as the making and fabricating precision control of spherical joint and bar ,and the welding technology to prevent the welding deformation.

介绍了电视塔钢结构球形节点的构造特点，各杆件轴线同圆球面交点的定位，球形节点和杆件的下料、组装精度控制以及为减少或防止焊接变形所采取的焊接工艺。

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。

To integrate the process of lathing and welding thin wall cylinder parts,a flexible assembled fixture was designed.

为了满足薄壁筒体零件车焊一体化复合加工的需要，设计了一种柔性组合夹具，达到了将车削加工工艺和焊接加工工艺同时在同一个专用设备上完成的目的，简化了制造工序，提高了焊接质量。

In the research of image system, a image processing algorithm of welding seam is established on the basis of image math. model of structured light of Fourier-transformation of lens in space, and the image analyzing system based on the rule-model of the features of welding seam in 3D-space is also established which can meet the requirements of the auto-programming of welding parameters for arc welding robot in accuracy and reliability.

在焊缝图象系统的研制中，基于结构光空间付氏变换的光纹图象数学模型，建立了焊缝图象处理算法，并基于焊缝三维空间特征的规则模型，建立了焊缝图象分析系统，使焊缝检测与分析的精度和可靠性达到了弧焊机器人焊接参数自动规划及焊接路径自动规划的精度要求。

It is shown that preventing welding hot cracking by mechanical methods can avoid the limitation of metallurgical methods and is very effective both for solidification cracking and for liquation cracking, thus has more freedom in choice of the parent metal and filler metal.

研究表明，采用力学方法防止焊接热裂纹可以避免冶金措施的局限性，对两类热裂纹（即焊缝凝固裂纹和近缝区液化裂纹）同样有效，因此，对焊丝成分和母材的选取有较大的自由度，是一种解决焊接热裂纹问题的重要的新途径。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。