查询词典 flash butt welding

The feedback of К190ПК rail flash welding machine was low, and it's difficult to weld U75V steel alloy rail with continuous flash butt welding process. The software and hardware of control system has been reconstructed to solve these problems.

针对К190ПК钢轨闪光焊机响应速度慢，只具有连续闪光焊工艺，难以实现U75V钢轨的焊接等问题，对焊机控制系统的软、硬件进行了改造。

For the large cross-section of welded steel, you can generally use electromagnetic induction welding, laser welding and flash butt welding, etc.

对于大截面钢材的焊接，通常可以采用电磁感应焊、激光焊和闪光对焊等。

According to equivalent circuit of the main welding circuit, a mathematic model was derived for maximum output power of theК-type alternative current rail flash butt welding machines. Based on the model, a high efficiency welding procedure was proposed, and the control program was designed.

针对目前国内大量使用的К型交流钢轨闪光焊机，根据焊接主回路等效电路建立了最大功率输出和高效焊接控制的数学模型，编制了过程控制程序。

Experiment result indicates that laser power density,welding speed,pulse frequency and pulse width are the key factors of pulse laser welding and that the polishment,close touch of butt joint faces have an important effect on the air vents number in welding line and the mechanical performance of welding line.

实验结果表明：对焊面的打磨、抛光和紧密接触对防止焊缝中产生过多的气孔和提高焊缝的机械性能有重要作用；激光功率密度、焊接速度、脉冲宽度和脉冲频率四个参数是实现脉冲激光焊接的关键因素。

Temperature distribution,deformation and residual stresses of thick plate butt multipass welding were researched through a comparison among normal welding, vibratory welding and welding with wind cooling.

采用振动焊接及气冷的方式与常规焊接对比，研究了埋弧自动焊厚板角接多道焊的温度、变形及残余应力。

The results show that laser-arc welding can achieve full penetration by single-path butt jointing through appropriate parameters; Y shape groove with 8 mm truncated edge can enhance the penetration ability of laser-arc hybrid welding. Low welding speed is good for penetration, however the limitation still exists for hick plates joint. Gap is significant factor of penetration when work pieces is large thickness. The hardness of thick plates joint shows that there is big difference in mold of vertical thermal cycle using laser-arc hybrid welding.

结果表明：通过激光功率等焊接规范匹配，激光-电弧复合焊接能实现20 mm厚板的全熔透单道对接；钝边为8 mm的Y形坡口有助于提高厚板激光-电弧复合焊缝熔透能力；降低焊接速度有利于提高熔深能力；工件厚度较大时，装配间隙对焊缝熔深能力的影响较为显著；接头硬度表明厚板激光复合焊焊缝纵向热循环模式存在较大差异。

The series of computerized automatic welder for portal ring seam is applicable for both of wire-drive and butt-weld ring seams at M direction for various casket cylindrical metal materials with plate thickness of 0.8mm~2.5mm and lmm8mm, due to silver or golden welding seam, beautiful and clear appearance, high strength, continuous and stepless weld-speed regulating and non corrosion in crystalline, this equipment is mainly suitable for ring-seam butt-weld to SS compressing components and various inners concerning solar water heater, enamel water container, electric heater and turkey boiler, and for ring-seam wire-drive and butt-weld to barrel and tank for large industry production.

该系列龙门式环缝电脑自动焊接设备可对板厚0.8mm—2.5mm和1mm—8mm的各种圆桶形金属件实施M向位置的环缝对接和送丝焊接，为两用型设备。焊缝颜色呈银白色或金黄色，焊接美观光洁、强度高、无晶间腐蚀，焊接速度连续无级可调，主要适用于不锈钢承压或太阳能热水器内胆、搪瓷水箱内胆、电热水器内胆、火鸡锅和对大型工业制桶、罐等产品的环缝对接、送丝焊接。

This study is to give a solution for the estimation of flash point for mixtures, the necessity for classification of flammable liquids. The traditional models for predicting flash point of mixtures usually by the activity coefficient approach. However, the parameters of activity coefficient were regressed from phase equilibrium data in the literatures. If there is no such parameter in literatures for the desired mixture, the model cannot predict the flash point oft hat mixture. Thus, this research aims at the improvement of deficiency of the flash point prediction models in the literatures by useing UNIFAC (Universal Quasi-chemical Functional Group Activity Coefficient) equation, Dortmund-UNIFAC equation and Lyngby-UNIFAC equation. In this study, we were aim at the prediction model for miscible mixtures.From the result, it is suggested to use different type of UNIFAC equation to estimast activivity coefficient in the predition of flash point for different mixture type.

易燃液体分类的主要依据参数为闪火点值，因此本研究目的为解决易燃液体中混合物分类时所面临到的闪火点值缺乏的问题，而在过去文献中所提出的闪火点预测模式会使用到活性系数，但这些模式使用到的活性系数均需要相平衡的数据以回归其所需参数，若所欲估算闪火点的混合溶液文献上未有相关参数，则无法有效利用闪火点预测模式估算其闪火点，因此针对文献中现有闪火点预测模式的缺点，利用描述液体混合物活性系数UNIFAC (Universal Quasi-chemical Functional Group Activity Coefficient)方程式、Dortmund-UNIFAC方程式和 Lyngby-UNIFAC方程式，建立发展一闪火点预测模式，而本研究以互溶溶液为对象。

FlashSpring is very flexible and provides you with different ways of exporting presentations to Flash format, such as solid Flash clips, multipage Flash clips, a set of Flash clips embedded in a Flash-based player.

flashspring是非常灵活，为您提供不同的方式出口简报Flash格式，如固体的Flash剪辑，多页的Flash剪辑，一套的Flash剪辑嵌入式在一个基於闪存的播放器。

Huang Hua HuaYang electric welding net plant is a making electric welding net machine plant,we have ten years history,Product 1/4－6 inch net order breadth 3－7 inch serial row electric welding net machine, supply every kind of high-quality common curl type, commonwire, stainless electric welding net.nearly,we have producted serial stainless net electric welding net machine and largescale breadth net machine,is encyclic used for every techinics net highway fence,net cage,light wall net building net.

黄骅市骅洋电焊网厂是生产网类焊接设备的专业厂家，有十多年的历史。可生产网目从1/4英寸－6英寸，宽幅从3英尺－7英尺各种规格的电阻焊系列排焊机。可供焊网用户生产各种优质普通卷式、普通铁丝、不锈钢电焊网。最近本厂又开发生产出多功能大型网片机，可广泛用于各种工艺网、高速公路护栏网、养殖网、轻墙体用网、建筑用网。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。