由于钛合金的活性强，熔化焊时需要用惰性气体或真空进行保护。
Because of the high activeness of the titanium alloys, the inert gases or vacuum shielding is needed in fusion welding.
上体左、右半壳直焊缝视产品结构不同，分别采用对接熔化焊和搭接缝焊工艺。
According to the different product structure, butt fusion welding process and lap seam welding process are used to respectively weld left and right half shell of upper body.
电子束焊接具有显著的小孔效应，这一特点决定着电子束焊接过程和普通熔化焊不同，并对其焊接应力和变形产生重要影响。
Electron beam welding has significant keyhole effect, it induces the electron beam welding different from general melting, and also important influence on its welding stresses and distortion.
全面系统地介绍了脉冲熔化极气体保护焊的各种控制方式，并明确地把它们分为两类：参数控制和熔滴过渡精确控制。
This article introduces all kind of control method of pulse melting pole in gas protection welding, and divided them into two kind: parameter control and melt dripping transition accurate control.
针对奥迪轿车消音器的材料、结构及接头形式，研制了适用于消音器焊接的熔化极气体保护自动焊设备，并对焊接工艺进行了研究。
In order to solve Audi car muffler welding problems, a MIG automatic welding process and equipment arc developed which is suitable for the material, structure and joint type of the muffler.
交流脉冲MIG焊其焊缝熔深及焊丝熔化速度不仅与焊接电流有关，而且与负极性比率有关。
Weld penetration and wire melting speed of AC PMIG welding not only have relationship with welding current but also with electrode negative ratio.
窄间隙MIG焊(熔化极气体保护焊)是一种先进的高质量焊接方法。
Narrow gap MIG welding is an advanced welding technic with high quality.
电弧在此两者之间产生，产生的热量会使金属在接焊处熔化。
An arc is stuck between the two, and the heat which is generated melts the metal at the weld.
文中给出的算例表明，适当控制通入的电流强度，可以达到有效控制裂尖熔化区尺寸以及形成焊口的目的。
If a current with proper intensity has been switched on, the goal of controlling the melting and welding dimension effectively around the crack tip can be obtained.
通过测量双电极焊条的动态温升等试验方法研究了双电极焊条单弧焊中双电极焊条的加热和熔化。
With measuring dynamic temperature change of twin electrode, the heating and melting of twin electrode single arc welding was investigated.
通过试验在特征谱线下，采集了大量熔化极气体保护焊五种熔滴过渡的光谱信号波形。
A lot of spectrum of the metal transfer mode of metal gas are welding have been acquired in characteristic spectrum by testing.
利用该方法对V形坡口进行了金属熔化极气体保护电弧焊的跟踪试验，试验结果验证了所用方法的有效性。
Tracking experiment of MIG on V shape welding groove is made with this method, and the experiment result validates the validity of this method.
横向焊接时由于熔化金属重力的作用，会引起熔池金属下淌，从而产生咬边以及焊瘤等焊接缺陷。
In horizontal position welding, the gravity makes molten metal flow downward and sometimes causes weld defects such as undercut and overlap.
实验表明，爆炸焊接界面虽然具有熔化、扩散和压力焊的特征，但不能用熔焊和扩散焊机理来解释爆炸焊接界面的成因。
Although the interface has the features of melt, and pressure welding, the molten and diffusion welding cannot explain the bonding mechanism of explosive welding.
阐述了混合气体在熔化极气体保护焊中的应用现状，分析了保护气体成分的不同配比对熔化极气体保护焊的焊接工艺性能、焊接质量的影响。
This paper illustrates the applications of mixed gases in GMAW and analyzes the different proportion of shielding gas impacts on the welding technics performance and quality in GMAW.
文章讨论了钎焊时间、钎焊温度、钎焊间隙及焊后扩散处理对钎焊接头再熔化温度的影响。
This paper discusses the effect of brazing time, brazing temperature, brazing gap and diffusion treatment on the remelt temperature of the brazed joint.
本文利用高速摄影机和示波器研究了钢焊丝熔化极脉冲焊的各种熔滴过渡形式，试验是在平焊和仰焊位置进行的。
In this paper various metal transfer modes in the pulse MIG welding with steel electrode are studied by means of high speed cine camera and oscillograph.
采用非熔化极惰性气体保护焊，并提高焊口绝缘等级，克服焊口的晶间腐蚀。
To deal with corrosion at weld joint, shielded inert gas are will be used and the insulation grade raised.
熔化极气体保护焊(GMAW)是焊接生产中常用的焊接方法之一。
Gas metal arc welding (GMAW) is the main welding method in welding production.
应用高效的气体保护熔化极电弧焊焊接铝合金薄板时，容易出现熔池下塌、烧穿等焊接缺陷。
Welding defects such as collapse of molten pool, burning through, would like to happen in the high efficient gas shielded metal arc welding.
东方电机股份有限公司首次采用混合气体熔化极气体保护焊焊接水轮机转轮室，并且在出口叙利亚的迪什林水轮机中应用。
The mixed gas metal arc welding process is used for the first time by DFEM in the discharge chamber of the hydraulic turbine exported to Syria's Tishrin.
熔化极气体保护焊熔滴过渡数值模拟作为焊接学科的前沿领域和研究的热点之一，近年来已经取得了较大的进展。
The technology of numerical simulation for metal transfer in GMAW is one of the front and research hotspot in the weld filed , which has achieved great progress in recent years.
根据熔化极焊丝填充焊的特性，对钢桥焊接中普遍应用的药芯焊丝CO_2气体保护焊和埋弧自动焊进行了焊接试验。
According to the characteristics of arc welding with filler wire, experiments about the FCAW-CO_2 and SAW which is commonly used in steel bridge welding were carried out.
研究了ZL114 A合金大型铸件熔化极气体保护焊(MIG)焊补区域的组织与性能。
Microstructure and properties of repaired welding area in large aluminum alloy ZL114A castings by MIG (Metal Inertia Gas) welding technology were studied.
当负极性比率等于零即直流且焊丝为正极性的MIG焊时，其焊缝熔深最大，焊丝熔化系数最小，熔敷速度最小；
When electrode negative ratio is zero, which is using MIG welding with DC ami welding wire being positive polarity, weld penetration is maximum , wire melting speed and deposition rate are minimum;
熔化极气体保护焊熔滴过渡检测具有重要的实际意义。
Detecting of metal transfer in GMAW has great practical significance.
将熔化极气体保护焊（GMAW）的热输入处理为三维移动串热源，建立了串热源模型，模拟了JG590低合金钢的GMAW焊接热过程。
The GMAW welding thermal process for low alloy steel JG590 was analyzed based on the established heat source model.
最后开发了一套基于DSP为核心的数字控制系统，完成了熔化极气体保护焊弧长控制系统的硬件电路设计和软件设计。
A digital control system based on DSP was developed and the hardware and software configurations of the GMAW control system were completed.
镀铝钢板焊接采用熔化极氢弧焊短路过渡方法，使其焊接接头的质量和耐蚀性都得到了提高。
The short circuit transfer of GMAW with argon shieding is used to weld aluminium-plated steel sheets or plates. In the way of this, both joint quality and corrosion resistance can be increased.
镀铝钢板焊接采用熔化极氢弧焊短路过渡方法，使其焊接接头的质量和耐蚀性都得到了提高。
The short circuit transfer of GMAW with argon shieding is used to weld aluminium-plated steel sheets or plates. In the way of this, both joint quality and corrosion resistance can be increased.
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