Characteristics of controlling droplet transfer in consumable electrode short circuit welding

Metal loss due to splashing is a problem in consumable electrode welding. Splashing results from energy surges during bridge ruptures and can be minimized by rapid reduction of current during bridge rupture followed by restoration when arc voltage rises to a desired reference level. Growth of drople...

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Bibliographic Details
Published in:Welding international 1993-01, Vol.7 (11), p.895-897
Main Author: Ishchenko, Yu R S
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Joining, thermal cutting: metallurgical aspects
Metals. Metallurgy
Welding
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Summary:Metal loss due to splashing is a problem in consumable electrode welding. Splashing results from energy surges during bridge ruptures and can be minimized by rapid reduction of current during bridge rupture followed by restoration when arc voltage rises to a desired reference level. Growth of droplet radius with time and energy transfer to the molten metal pool was determined as a function of weld parameters. A model for calculating droplet transfer to the metal pool during a short circuit was developed for use in evaluating time and energy characteristics of the control circuit system for droplet transfer in consumable electrode welding with respect to weld process parameters. The model also establishes the time in the short circuit cycle to add external energy and the amount to be added.
ISSN:0950-7116
1754-2138
DOI:10.1080/09507119309548512