منابع مشابه
Dynamic analysis of droplet transfer in GMAW: modelling and experiments
In this work, a pulsed welding process has been investigated to highlight how a time varying profile of current impacts on the metal transfer dynamics. First, the process has been recorded using high-speed camera, allowing to qualitatively evaluate the effectiveness of metal transfer and the synchronization of the droplet detachment with current peaks. Second, a timedependent axi-symmetric 2-D ...
متن کاملImage processing algorithm for automated monitoring of metal transfer in double-electrode GMAW
Controlled metal transfer in gas metal arc welding (GMAW) implies controllable weld quality. To understand, analyse and control the metal transfer process, the droplet should be monitored and tracked. To process the metal transfer images in double-electrode GMAW (DE-GMAW), a novel modification of GMAW, a brightness-based algorithm is proposed to locate the droplet and compute the droplet size a...
متن کاملModeling Of Heat Transfer And Solidification Of Droplet/Substrate In Microcasting SDM Process
Microcasting Shape-Deposition-Manufacturing is an approach to Solid-Freeform-Fabrication (SFF) process which is a novel method for rapid automated manufacturing of near-net-shape multi-material parts with complex geometries. By this method, objects are made by sequentially depositing molten metal droplets on a substrate and shaping by a CNC tool, layer by layer. Important issues are concerned w...
متن کاملModified Active Control of Metal Transfer and Pulsed Gmaw of Titanium
This paper aims at the development of an advanced control technology for pulsed gas metal arc welding (GMAW) of titanium or other materials which require a highly stable metal transfer process. It is known that conventional pulsed GMAW achieves stable and repeatable spray transfer by using correct pulse parameters. Because the optimal pulse parameters depend on welding parameters such as wire f...
متن کاملMechanically assisted droplet transfer process in gas metal arc welding
Gas metal arc welding has been generally accepted as the preferred joining technique due to its advantages in high production and automated welding applications. Separate control of arc energy and arc force is an essential way to improve the welding quality and to obtain the projected metal transfer mode. One of the most eVective methods for obtaining separate control is to exert an additional ...
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ژورنال
عنوان ژورنال: DENKI-SEIKO[ELECTRIC FURNACE STEEL]
سال: 1990
ISSN: 1883-4558,0011-8389
DOI: 10.4262/denkiseiko.61.260