焊接的

The brazing process includes selection of brazing materials, pre-brazing preparation, regulation and deformation control of brazing parameter. The Al-Si alloy wires core was used as filler metal and the gasoline flame with quincunx nozzle was used as heating source. Through FEM analysis, a set of technological equipment was designed to control brazing distortion.

通过对焊接材料、焊接规范、焊接工装等方面进行的试验和分析，确定了6063铝合金门窗框的钎焊采用无腐蚀性的Al-Si合金铝钎焊药芯焊丝作为钎料，汽油火焰作为加热热源的工艺方案，并通过有限元分析设计了简单易用的焊接工装以控制焊接变形。

In order to reduce the welding deformations, the technology is optimized as follows: the reversible deformation values should be initialized, continuous welding is adopted at ribbed plate as welding sequence and the main weld is symmetric back space wandering welding, and the values of welding current and voltage should be defined according to the procedure qualification.

为了减少焊接变形，优化的工艺为：预置反变形；焊接顺序采用筋板连续焊，主焊缝从中间往两边对称退位跳焊；焊接电流和电压取焊接工艺评定规定的值。

The results show that, Au-19.25Ag-12.80Ge brazing alloy is better, its melting temperature range is 446.76494.40 ℃, and the temperature interval between the solidus and the liquidus is 47.64 ℃. When the brazing temperature is in the range of 510550 ℃, the alloy has a good spreadability and wettability with Ni. Interface structure observation reveals that there is one continuous intermetallic layer between the brazing alloy and the base metal Ni when welding. X-ray energy spectrum analysis results show that the intermetallic layer is Ge3Ni5, and because of its brittleness, the overthick intermetallic layer will decrease the shear strength of the welding joint, therefore, the welding technology should be controlled so as to gain an ideal welding interface structure.

研究结果表明：Au-19.25Ag-12.80Ge合金的性能较好，其熔化温度范围为446.76~494.40 ℃，结晶温度区间为47.64 ℃；焊接温度在510~550 ℃范围内时，Au-19.25Ag-12.80Ge钎料合金与Ni基体具有良好的铺展性和润湿性，焊接时钎料合金与Ni基体之间形成了一条连续的金属间化合物层，能谱分析表明该金属间化合物层为Ge3Ni5，由于该化合物较脆，过厚的金属间化合物层使焊接接头的剪切强度下降，故应适当控制焊接工艺以获得理想的焊接界面组织。

This article analyzes the reason and influence of Magnetic blow on welding arc during the welding process.

文摘：分析了磁偏吹在焊接过程中对焊接电弧的影响以及产生原因，通过调整和改善焊接电弧周围磁场分布，并采用反消磁法，克服和消除了磁偏吹对焊接电弧的影响。

A computerized welding arc spectrum information sampling and processing system are developed to study of the ultraviolet spectrum distribution feature. Corresponding softwares also is developed. A process for sampling the ultraviolet spectrum automatically and the real-time monitoring of welding parameter are realized. based on the principles of the physics of arc and spectroscopy the information of welding arc ultraviolet spectrum sampled is changed and processed.

焊接电弧紫外光谱信息的计算机采集与处理系统*韩国明吴钊柳刚云绍辉李俊岳摘要以焊接电弧紫外光谱的分布特征为研究对象，研制了一套焊接电弧紫外光谱计算机采集与处理系统并开发了相关软件，实现了紫外光谱采集过程的自动化、焊接电流与电弧电压的实时监测，并在电弧物理和光谱学原理的基础上，对采集的焊接电弧紫外光谱信息进行变换和处理。

We will achieve our objective by developing an integrated system that will continuously measure characteristics of the weld, the arc, and the metal transfer mechanism and use these data to adjust the weld current, voltage, speed, and arc concentration.

我们将通过开发一个集成的系统来实现我们的目标，这个系统将连续测量焊接性能、电弧和金属移位机制，并使用这些数据调整焊接电流、焊接电压、焊接速度和电弧密度。

With traditional welder art photograph is compared, the laser beam welding after optimizing receives technology satisfying tall solder while intensity asks, rose to solder greatly efficiency, provided main technique support to improve derv engine performance.

和传统焊接工艺相比，优化后的激光焊接工艺在满足高焊接强度要求的同时，极大地提高了焊接效率，为提高柴油发动机性能提供了重要技术支持。

The distribution uniformity of external magnetic field is weakened by the cylindrical coil with some thickness ferric-core. The model of fluid flow and heat transfer of spot GTAW pool in longitude magnetic field controlling is developed for the first time, which incorporates the free surface, surface tension gradient, additional fluid drive forces owing to the external longitude magnetic, heat transfer between weld pool and medium, latent heat of solid/liquid phase and heat physical properties of materials.

综合考虑了焊接熔池表面张力温度系数的变化、熔池自由表面变形、外加纵向磁场对熔池流体的附加作用力、熔池与周围介质的换热、固/液两相区的熔化潜热、焊接材料的热物理性能等问题，将熔池自由表面变形、外加纵向磁场与熔池流场的计算过程相耦合同时进行分析，模拟了不同焊接材料、不同外加磁场以及不同焊接条件下外加纵向磁场GTAW定点焊接熔池流体流动与传热过程。

The chinese character menu under the graphics model is adopted as a interface which communicates the operator to the master computer. The C language is used to program the data system and the operating system. All the welding parameters are stored in the database of the master computer and those welding parameters which are frequently used are defined beforehand, furthermore the selectable extent of each welding parameter is given according to the variers welding technology. Mouse can input and change all the data and the welding order. In order to control the welding parameter on the spot in real-time, the remotely controller is designed.

本焊接机主机的数据系统和操作系统采用图形模式下的汉化菜单作为接口，主机的数据系统和操作系统均采用C语言编程；全部焊接参数都被固化在主机的数据库中，并预先定义了常用的焊接参数，每一参数根据不同工艺给定了参数选择范围，全部数据和命令可用鼠标输入和改变；另外，为便于焊接现场对焊接参数的实时控制，设计了远控盒。

The American Welding Society is proud to be a Co-Sponsor of this major international welding and cutting event, which over the years has become one of Asia's strongest showplaces for viewing welding products and technology.

美国焊接学会作为这一重要焊接与切割活动的协办单位备感骄傲。北京·埃森焊接展多年来已经成为焊接产品与技术在亚洲最重要的展示窗口。

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％。