The Paton Welding Journal, 2014, №10



2014 №10 (10)

DOI of Article 10.15407/tpwj2014.10.01

2014 №10 (02)

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The Paton Welding Journal, 2014, #10, 2-10 pages  

METHODS OF MATHEMATICAL MODELLING OF THE PROCESSES OF ELECTRODE METAL DROP FORMATION AND TRANSFER IN CONSUMABLE ELECTRODE WELDING (Review)

A.P. SEMYONOV

E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
 
 
Abstract
Processes of welding wire heating and melting, electrode metal drop formation and transfer in consumable electrode welding largely determine welding efficiency and quality. In its turn, the nature of metal melting and transfer with this welding process is determined by a large number of such physical phenomena as heat and mass transfer, gas(hydro)dynamics, electromagnetic processes, running in arc plasma, on the surface and in the volume of molten electrode metal-drop. This paper gives a review of currently available methods of theoretical investigation and mathematical modelling of the above processes, allowing prediction of such characteristics of electrode metal transfer as drop volume and shape, their thermal and gas-dynamic state, detachment frequency, etc. Advantages and disadvantages of the considered models are analyzed and main directions of their further development are outlined. 37 Ref., 11 Figures.
 
 
Keywords: consumable electrode welding, mathematical modelling, electrode metal drop formation
 
 
Received:                04.06.14
Published:               28.10.14
 
 
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