Complex Behavior of Droplet Transfer and Spreading in Cold Metal Transfer

In intelligent manufacturing, an intelligent control method of welding process is an important process of intelligent welding manufacturing technology (IWMT). Metal transfer is a key factor to control the welding process. Metal transfer and droplet spreading are of vital importance for welding forma...

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Bibliographic Details
Published in:Shock and vibration 2020, Vol.2020 (2020), p.1-11
Main Authors: Cao, Juyong, Yang, Fuyong, Xing, Yanfeng, Yang, Shuai
Format: Article
Language:English
Subjects:
Aluminum
Aluminum base alloys
Arc heating
Brittleness
Cameras
Cold
Cold welding
Contact angle
Control methods
Droplets
Electrodes
Experiments
Influence
Intelligent manufacturing systems
Manufacturing
Mass transfer
Process controls
Short circuits
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Summary:In intelligent manufacturing, an intelligent control method of welding process is an important process of intelligent welding manufacturing technology (IWMT). Metal transfer is a key factor to control the welding process. Metal transfer and droplet spreading are of vital importance for welding formation. A new theoretical model of cold metal transfer (CMT) in short-circuit transfer mode is proposed in this paper. In this model, the CMT welding process is regarded as a continuous process of arc heating, mass transfer, short-circuit, and spreading, and the relations between these processes are analyzed. The calculation equations used by the model can analyze the welding formation clearly and simplify the complex welding process into continuous physical behavior. The predicted welding width shows good agreement with the measurement results. The mechanism of increased welding width is also comprehensively analyzed. Results have a certain guiding effect on aluminum alloy welding process control.
ISSN:1070-9622
1875-9203
DOI:10.1155/2020/6650155