焊接

Tensile welding residual stress existing in stainless steel weldment is the essential factor resulting in stress corrosion cracking.

不锈钢焊接接头的焊接残余拉应力为焊接构件发生应力腐蚀开裂提供了应力来源。

An approach has been made to the repairing welding carried out for the can iron engine frame and sole plate Daihatzu diesels for marine application , regarding to such aspects as specified welded position, preliminary to welding, welding method, welding technology and qualified weldor, with the aim of fulfilling the requirement of quality set for engine product by vessels.

本文对大发船用柴油机铸铁机身、机座的焊接部位、焊前准备、焊接方法、焊接工艺等进行了探索，以达到船舶对发动机产品质量的要求。

LTHJ-SUPER-A1 Gantry welding automatic recovery machine This system is set for one body super new portal welder, special cylindrical welding tools or difficult welding. It adds super negative pressure wind pump on inner side of flux cylinder, so that in the welding process it can absorb unlyzed 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 repeated usage.

LTHJ-SUPER-A1型龙门焊自动回收系统本系统是一体超强新型的门式焊机或外圆焊接特制工具、高难度的焊接而设置的，它就是一个焊剂筒内加上超强负压风泵，使在焊接过程中尚未溶化的焊剂直接吸收到筒内，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。

Shanghai Witt of the welding equipment Manufacturing Co., Ltd., the production is a power inverter welding and welding equipment based private high-tech enterprises.

上海威特力焊接设备制造有限公司，是一家以生产逆变焊接电源和焊接设备为主的民营高科技企业。

Reduce the melting zone porosity methods include: welding pre-cleaning, welding process using inert gas welding area and selection of the full protection of the lower cooling rate of the welding parameters.

降低熔化区气孔率的方法包括：焊前清洗、焊接过程中用惰性气体充分保护焊接区和选择较低冷却速度的焊接参数。

The welding distortions of the diaphragm with coroneted blades in steam turbine have been studied with model and production experiments in this thesis. It is a main purpose to find out the rule of welding distortion of the diaphragm in radial, circumferential and axal direction.

为了掌握蒸汽轮机自带冠靜叶隔板焊接产生的直径变形、半径变形、节圆收缩率和倾斜变形的基本规律、提出减小和调整焊接变形的合理工艺措施，本文通过基于正交设计的模型试验和现场监测对自带冠靜叶隔板的焊接变形进行了研究。

A commonly observed welding defect characteristically occurs at high-speed welding, such as humping weld. Humping is the periodic occurrence of beadlike protuberances.

但焊接速度提高的同时也更容易产生焊接缺陷，如驼峰焊道，即焊缝金属沿焊接方向上分布严重不均的焊缝成形缺陷。

Comparing with common side hybrid laser-arc welding, coaxially combined laser beam and arc can provide a symmetrical circular thermal source on the workpiece surface, which is convenient for 3-D welding.

与目前常用的旁轴激光-电弧复合焊相比，激光-电弧同轴复合可以在工件表面提供对称热源，焊接质量不受焊接方向影响而适于三维焊接。

Thirdly, a welding platform scheme for huge circumferential seam's sealing is proposed, which is composed of multiple 3 DOF robots. It can control the pose adjusting during the rotation of the ship module. As to the different part of the ship hull, the inverse kinematics arithmetic of cylindraceous, elliptical and conical ship modules are given respectively.

第三，在船体环缝焊接系统中，本文提出了一种由多个3自由度滚轮机器人组成的环缝焊接平台的控制方法，实现了船体模块在旋转焊接时的姿态调整，并分别针对船艏、船舯和船艉的不同形状给出了相应的逆运动学算法以及可用于实时操作的简化控制算法。

Welding seams were tested and experiment of laser welding of DOGAL 800DP zinc coated high strength steel was performed using orthogonal test method.

采用正交方法优化试验方案，对DOGAL 800DP 镀锌高强钢进行激光焊接试验，并对激光焊接试样进行了多种焊接质量的检测。

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