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spray transfer
相关语句
  喷射过渡
     Characteristics of Pulsed Rotating Spray Transfer(PRST) in MAG Welding with Ar+O 2 Shielding Gas
     Ar+O_2 混合气体熔化极脉冲焊时的旋转喷射过渡特征
短句来源
     the high current value and easy forming for spinning spray transfer are obtained with Ar+2%O2gas mixture and on the contrary with Ar+20%CO2 gas the spinning spray transfer are not.
     Ar+20%CO_2的脉冲电流最低,不能形成脉冲旋转喷射过渡.
短句来源
     The arc static characteristics, the pulse variables and changing of critical variable to form spinning spray transfer are invested as welding is carried out with large current and different gas mixtures such as Ar+CO2 and Ar+O2. The results show that the static curve location depends on gas composition and its proportion.
     研究了在不同配比的Ar+CO_2,Ar+O_2大电流脉冲MAG焊时,电弧的静特性、脉冲参数以及形成脉冲旋转喷射过渡临界参数的变化. 结果表明,气体成分及配比不同时,电弧静特性曲线位置不同,在其它条件相同的情况下,Ar+2%O_2的脉冲电流最高,最易形成脉冲旋转喷射过渡;
短句来源
     By means of High Speed Camera(HSC) in MAG welding with Ar+O 2 shielding gas when forming of the pulsed rotating spray transfer, the weld arc and the droplet transfer characteristics have been observed.
     通过高速摄影方法,观察分析了在Ar+O2混合气体熔化极脉冲焊中形成旋转喷射过渡时的电弧形态和熔滴过渡形态。 结果表明:当形成脉冲旋转喷射过渡时,熔滴呈液流束的形式向熔池过渡;
短句来源
     It is indicated that if the choosed peak value of pulsed current is higher than the transition current(critical current)of continuous rotating spray transfer,the characteristics of metal transfer may change from pulsed axial streaming transfer to pulsed rotating-spray transfer with the continuous increase of pulse energy,simultaneously, the changes in are phenomena and shapes of weld will take place also,for example,weld width and wire feed speed will increas suddeuly.
     试验结果指出:如果选定的脉冲峰值电流值高于连续旋转喷射过渡的转变电流值,随着脉冲能量的不断增大,熔滴过渡特性将从脉冲轴向射流过渡转变为脉冲旋转喷射过渡,同时焊接电弧现象和焊缝成形等亦发生变化,例如焊缝熔宽与焊丝熔化速度会突然的增大。
短句来源
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  射流过渡
     With respect to spray transfer pool, compound filters system composed of 405nm or 1065nm narrow band filer are used, and respective pool images are obtained. Compared with each other, more clear pool image can be found through filter set composed of 1064nm narrowband.
     针对射流过渡熔池,分别采用405nm和1064nm窄带滤光片组成的复合滤光系统取得了各自的熔池图像,比较发现采用1064nm的复合窄带滤光系统取得了清晰的熔池图像。
短句来源
     The influencing factors of wire molten rates are studied, and the critical current of rotating spray transfer mode is also studied by using high-speed motion analyzer.
     为此,本论文研究了焊丝熔化速度的影响因素,并以高速摄像为手段研究了旋转射流过渡临界电流值的影响因素。
短句来源
     It is indicated that if the choosed peak value of pulsed current is higher than the transition current(critical current)of continuous rotating spray transfer,the characteristics of metal transfer may change from pulsed axial streaming transfer to pulsed rotating-spray transfer with the continuous increase of pulse energy,simultaneously, the changes in are phenomena and shapes of weld will take place also,for example,weld width and wire feed speed will increas suddeuly.
     试验结果指出:如果选定的脉冲峰值电流值高于连续旋转喷射过渡的转变电流值,随着脉冲能量的不断增大,熔滴过渡特性将从脉冲轴向射流过渡转变为脉冲旋转喷射过渡,同时焊接电弧现象和焊缝成形等亦发生变化,例如焊缝熔宽与焊丝熔化速度会突然的增大。
短句来源
     Vision detecting spray transfer pool and contour extraction
     射流过渡熔池视觉检测与轮廓提取
短句来源
     The finger penetration phenomenon in the spray transfer of MIG welding has been numerically simulated with the model given in this paper for the first time from the viewpoint of heat transfer and fluid dynamics.
     所建立的MIG传热模型首次从传热学和流体动力学的角度用数值方法模拟出了射流过渡时MIG焊缝的指状熔深。
短句来源
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  “spray transfer”译为未确定词的双语例句
     Arc spectrum signals of droplet spray transfer in MIG welding
     MIG焊熔滴过渡的电弧光谱信号
短句来源
     Thermal analysis model in spray transfer of spot MIG welding
     MIG定点焊射流过渡时的熔池传热模型
短句来源
     Mechanical Analysis on Rotation Mechanism at Molten Metal Tip During Pulsed Rotating spray Transfer in MAG Welding
     MAG焊脉冲旋转喷射过渡时液锥旋转机制的力学分析
短句来源
     The Interrelation Analysis of the Droplets Moving Morphlolgy of Rotating Spray Transfer in MAG Welding
     MAG焊旋转喷射过渡熔滴运动形态的相关分析
短句来源
     On the basis of experimental results above and the interactivity between arc plasma and magnetic field, the way to control the metal transfer by controlling arc shape with additional magnetic field is first presented, and the stable rotating spray transfer mode without helium in shielding-gas mixture in the region of high continuous current is finally acquired.
     基于上述实验结果,以及电弧与磁场的可作用性,本论文首次提出,采用外加磁场控制焊接电弧形态,进而控制熔滴过渡过程,最终在连续大电流区间,以无氦混合气体保护获得稳定的旋转射流过渡形式。
短句来源
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  spray transfer
Spray transfer efficiency (TE) is defined as the mass fraction of sprayed paint which is deposited on the intended target, the remainder of the sprayed paint becomes undesirable overspray.
      
The simulations based on the assumption of Gaussian current density distribution show that the transition from globular to spray transfer mode occurs over a narrow current range and the size of detached drops is nonuniform in this transition zone.
      
The majority of spray transfer processes occur within this layer.
      
Welder appeal is excellent with a spray transfer, thin slag which removes easily and cleanly and a smooth bead profile.
      
The rise and decay of ozone is especially apparent in spray transfer.
      
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Automation of welding process is one of the most urgent and important problems in modern industries, the first task for solving it is to realize the automatic seam tracking and the key point of realizing seam tracking is to develope suitable sensors. RWTH Aachen developed a new seam tracking system, the special feature of which is the using of arc itself as the sensor, and therefore it possesses superiority in many respects over all existing seam tracking system. However it has also a radical shortcoming, i....

Automation of welding process is one of the most urgent and important problems in modern industries, the first task for solving it is to realize the automatic seam tracking and the key point of realizing seam tracking is to develope suitable sensors. RWTH Aachen developed a new seam tracking system, the special feature of which is the using of arc itself as the sensor, and therefore it possesses superiority in many respects over all existing seam tracking system. However it has also a radical shortcoming, i. e. sensitivity to shortcircuit transfer which makes it useless in such cases.Recently observations and study on this system have further been made in RWTH Aachen, and the problem was successfully solved. As a result of this work this new system can be used not only for submerged arc welding, spray transfer MIG-MAG welding, but also for short-circuit transfer welding process. This paper describes the principle. mechanism, electrical block diagram of the System and the results of the latest study on it.

焊接自动化是当前工业中一个急待解决的重要问题,解决这一问题的首要任务是实现自动跟踪。自动跟踪的主要关键又是传感器的研究。Aachen工业大学研究成功一种新型自动焊跟踪系统,其特点是直接利用电弧作为传感器,因而具有其它一切跟踪系统所不具备的优点。但是这种系统也存在一个根本性的缺点,即它对短路过程十分敏感,在短路过渡焊接过程中不能采用。最近Aachen工业大学对此进行了观察研究,成功地解决了这一问题。本文叙述了这一新型自动跟踪系统的原理、装置以及最近研究的结果。由于这一研究成果,本系统不仅可用于喷射过渡,而且可以适用于短路过渡过程的焊接方法。

It has been well—known that the metal transfer and the heat input can be controlled in consumable electrode pulse current are welding process. But we have discovered further another controllable characteristic of this process during our experiments. In the case of pulse-spray transfer even though the average arc current and voltage are kept constant, the visible are appearance can be varied by altering the other operating variables. Keeping the average arc energy unchanged, three different typical visible...

It has been well—known that the metal transfer and the heat input can be controlled in consumable electrode pulse current are welding process. But we have discovered further another controllable characteristic of this process during our experiments. In the case of pulse-spray transfer even though the average arc current and voltage are kept constant, the visible are appearance can be varied by altering the other operating variables. Keeping the average arc energy unchanged, three different typical visible are appearannees, i.e, the bunch type, bell type and cone type, can be obtained. Each type of these arc appearances offers it's special thermal and mechanical features, and so brings about distinct technological characteristics. During the pulse current cycle, the varied process of the size and the shape of the luminous region of the are has been observed by the high—speed photography. The lumineus region of the arc in the duration of the pulse current period grows gradually from a thin linear shape to a bunch shape and finally to a cone shape and remains so continucusly if the pulse current time is enough. We call the time necessary for this growing process the dynamic time of the luminous region of the pulse current arc (t_d). The resulting visible appearance of the pulse current arc depends on the relationship between t_d and t(?) (pulse current time). The effects of the pulse current magnitude, the pulse current wave form and the shielded gas composition on the t_d have been examined. The dissimilarity of the technological features of these different visible arc appearances as well as its reasons have also been discussed. The controllability of the arc appearances is of help to extend the application field of the cosumable electrode shielded gas arc welding process. It can be utilized successfully in several practical applications, such as in the welding of thin platcs, one—side welding without backings, narrow gap welding process, positional welding processes and so on.

熔化极脉冲焊具有熔滴过渡和热输入量可控的特点,已是众所岗知,本文发现这种方法尚具有电弧形态可控性的特点。脉冲—射流过渡时,即使保持平均电流和电压不变,改变其他参数可以得到三种不同的目视电弧形态:束状、钟状和圆锥状。每种目视电弧形态都有其不同的加热和机械作用性能。用高速摄影观察了脉冲电流作用期间电弧烁亮区尺寸和形状的变化过程。在每一脉冲电流作用过程,如果脉冲时间足够,电弧烁亮区总是从细线状经过束状、钟状变化到圆锥状,以后就不再发生变化。我们将此变化过程的延时称为电弧形态的动态时间(t动态)。不同的目视电弧形态都足由t动态与t脉冲(脉冲时间)的相互关系所决定的。本文试验了脉冲电流幅值、脉冲电流波形、保护气体种类等因素对t动态的影响,得到了控制目视电弧形态的途径;讨论了不同电弧形态的工艺性能的特点及其原因。掌握这种目视电弧形态的可控性规律可以进一步扩大熔化极脉冲焊的应用范围,可以更成功地进行薄板焊接、单面焊反面自由成形、窄间隙焊接、全位置焊接等工作。

In this paper the high speed cinecamera, oscillograph and self-made dried sampling globules methods are applied to investigate the metal globular transfer of various type electrodes。The paper preliminarily summarizes and sums up the basic law of metal globular transfer of electrodes, draws out metal globular transfer of electrodes, classifies it into four modes: large globular short-circuit transfer, cap of cove- ring-wall guided transfer, spray transfer and explosive transfer. Various properties...

In this paper the high speed cinecamera, oscillograph and self-made dried sampling globules methods are applied to investigate the metal globular transfer of various type electrodes。The paper preliminarily summarizes and sums up the basic law of metal globular transfer of electrodes, draws out metal globular transfer of electrodes, classifies it into four modes: large globular short-circuit transfer, cap of cove- ring-wall guided transfer, spray transfer and explosive transfer. Various properties of transfer modes and their interrelation are analysed and observed systematically. Emphasis is put on the analysis and research of metal globular transfer of electrodes, that has consid- erable influence on the modes spatter and arcstability, which acts upon technical characteristics of electrodes, At the same time, for the pu- rpose of increasing the synthetic technical characteristics of coated electrodes, the article shows the epinions about the reasoning modes of transfer.

本文运用高速摄影技术、波形分析等手段,就各种类型焊条金属熔滴过渡形态进行了研究,初步总结和归纳了焊条金属熔滴过渡的基本规律,并提出焊条金属熔滴过渡形态划分为粗熔滴短路过渡、“附壁”过渡、喷射过渡和爆炸过渡四种主要类型,较系统地观察和分析了各种过渡形态的特点及其内在联系。文中着重焊条金属熔滴过渡形态对焊条工艺性能影响较为突出的电弧稳定性和飞溅形式两个方面做了一些分析和探讨。为提高焊条综合工艺性能,还就合理过渡形态表明了看法。

 
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