对焊

除非另外指定，所有美国太平洋阀门都配置符合ANSIB16.25标准的对焊连接端口，并根据阀门壁厚和管道壁厚确定是属于型号2（b）或3（b）。

Unless otherwise specified , all Pacific valves will be supplied with butt weld ends conforming to ANSI B16.25 either Fig.2 ( b ) or3 ( b ) depending on the nominal pipe wall thickness of the valve wall .

对焊连接端口-在括号（）内定义所配置的管道目录。

Butt weld ends-Schedule of mating pipe defined within parentheses () .

PLCMINI网络在闪光对焊机组控制中的应用研究

Study on Control of Flash Butt Welding Machine with PLC MINI Network

基于WINDOWS的闪光对焊过程控制与数据管理软件的研究与设计

Study and design of software of flash butt welding process control and data management based on WINDOWS

针对闪光对焊的特点，采用了专家PID控制。

Aiming at the characteristics of Flash Butt Welding , the system adopts the expert controller of PID .

针对钢棒在闪光对焊时的特点，将钢棒简化为二维轴对称模型，利用ANSYS有限元分析技术对钢棒在闪光对焊焊接过程中的温度分布进行数值模拟。

A simplified 2D axial symmetry model was founded against the features of steel stick in flash butt welding . The temperature field was simulated utilizing ANSYS software .

Al-Mg-Si合金车圈闪光对焊工艺试验研究

A Study on Technological Experiment of the Al Mg Si Alloy Bicycle Wheel with Flash Butt Welding

因此，焊接HAZ最终晶粒尺寸以及晶粒尺寸分布的预测对焊件质量的控制起着关键的作用。

Therefore , predictions of the HAZ ultimate crystal grain size distribution and crystal grain size distribution plays a key role for the quality control of welding joints .

在2mm厚的哑铃形A3钢试件上进行对接闭环控制实验，试验结果表明：在散热条件变化的条件下单独调节脉冲占空比可以保证焊缝反面宽度的稳定；闪光对焊封闭环式箍筋应用技术

Closed loop control experiments with butt joint were conducted on 2 mm mild steel dumbbell shaped work piece . Application of Closed Stirrup With Flash butt Welding Method

400MPa级超细晶粒钢筋闪光对焊的组织及性能

Microstructure and property of the flash butt joints in 400 MPa ultra-fine grain steel

对焊渣进行了SEM形貌观察和EDS成分分析，并采用氦弧焊证实了焊接过程中焊渣在熔池表面成片分布，电弧斑点极大收缩。

Then SEM observation and EDS analysis of slag are carried out respectively . Separate distribution of slag on welding pool during welding and great constriction of arc spots are confirmed by TIG welding with helium shielding gas .

本文采用MSP430F149单片机设计和研制了一种基于智能PID控制的闪光对焊动态电阻智能控制系统。

The article introduces an intelligent controlling system of dynamic resistance of Flash Butt Welding basing on Intelligent PID Controlling . The core of the control system is Single Chip Microprocessor .

采用AZ31B作为填充材料或直接对焊时，焊缝均有裂纹。

While the AZ31B is used , or no filler metal is used , the crack appears in the weld seam .

焊缝形状参数的统计波动对焊趾疲劳裂纹LEFM有效限的影响

The Effect of Statistical Fluctuation of Weld Shape Parameters on LEFM Validity Limit for Fatigue Cracks at Weld Toes

本文主要研究如何应用有限元法分析平板对接的焊趾TIG重熔层激冷处理对焊趾表面残余应力分布的影响规律，包括焊态和焊趾TIG重熔的残余应力的分布。

This paper studied how to attain the distribution regulation of welding residual stress of butt joint of plate after weld toe was TIG remelted and intense cooled by finite element method . It includes residual stress distribution after welded and weld toe TIG remelting .

采用Gleeble-2000热模拟试验机，对高速铁路轨道用U71Mn钢轨钢的对焊顶锻变形过程进行了热力模拟试验。

The upset formation process of rail ( U71Mn ) butt welding was test by thermal and mechanical simulation using Gleeble-2000 simulator .

根据所建立的焊接CCT曲线，选择了合理的焊接工艺对10mm厚的船用热轧钢板进行了手工电弧焊，并对焊后的焊接接头进行了宏观检验和X射线探伤、力学性能试验及冲击试验。

According to them , the reasonable welding technique was selected to weld hot-rolled shipbuilding plate ( 10mm thick ) through manual arc welding and welding joints after the welding process were measured by visual examination , X-ray inspection , mechanical property and impact tests .

构建机器视觉实验平台，根据BGA芯片焊球缺陷类别，设计缺陷识别流程，利用MATLAB软件建立仿真系统，并进行了仿真实验研究，实现对焊球缺陷的检测。

Machine vision experiment platform has been constructed . According to the defect sorts of BGA chips , defects inspection process was devised . By the use of the software MATLAB , simulation system has been established and experiments have been done , finally ball defects inspection is actualized .

脉冲GTAW焊的表面焊波对焊接件的结构应力、焊接接头的强度和疲劳寿命等有重要影响，表面焊波的形成是一个复杂的过程，包含多个机理。

For pulsed GTAW , surface rippling is associated with structure stress of weldment , strength of the welded joint , fatigue life and other micro-structural features . The formation of surface rippling is a complex process , which contains multiple mechanisms .

在此基础上，分别对钛合金TA15与304不锈钢直接对焊和预置填充层钛/钢电子束焊接两种情况下的温度场与应力场进行了数值模拟。

On this basis , respectively , the temperature fields and stress field of Ti / steel joint by using pre-middle layer and Ti / steel joint by electron beam welding directly are simulated .

提高金属针布接头对焊质量的探讨

An Approach To Increasing Butt-Welding Quality of Metallic Card Cloth-ings Wires

简述闪光对焊基本工作原理和基本分类。

Briefly introduce the sorts and fundamental principle of flashing butt .

石油钻杆摩擦对焊工艺的应用

Application of Friction Butt - welding Process for Oil Drill Pipe

对焊法兰优化设计浅探

An Elementary Discussion on Optimum Design of Butt - Weld Flange

圆环链闪光对焊的深冷处理

Deep cold treatment for rounded iron chain with flash butt welding

钢轨对焊顶锻变形热力模拟研究

Thermal and mechanical simulation investigation in upset deformation of rail butt welding

对焊钻杆热处理系统自动化改造

Automation improvement to heat treatment system for welded drill pipe

铁素体球墨铸铁与20钢的闪光对焊

Flashing butt welding between ferrite spheroidal graphite cast iron and 20 steel

长径对焊法兰精密辗扩坯料截面形状优化

The Optimization of Blank Section in Precision Rolling of Big Caliber Flange

闪光对焊是用焊接方法生产锚链的主要环节。

Flash butt welding is a major part of the chain-making progress .