Презентация на тему Kinetics melting and electrode metal transfer features in electric-arc welding flux cord wire in shielding gases

melting and electrode metal transfer to the weld pool

using high-speed video for welding and surfacing flux cored wire.

development of welding flux-cored wires. Develop new designs and

compositions of filler wires. It is possible that in the future, welding cored wires will lead in production, because this method is easy to use, less time consuming, and also has a higher technological opportunities. Researching the features of melting and electrode metal transfer using cored wires for welding will determine the best modes for welding and surfacing, improve the quality of welding, that enhances result of adopting this method of welding in many branches of engineering.

welding power source «NEON» PDG-201, equipped with a mechanism

for the wire feed; 3 – Digital high-speed video camera «Baumer»; 4 – welding booth; 5 – welding torch; 6 – welding arc; 7 – arc spotlight for a shadow image of the object under study; 8 – digital recorder of welding parameters AWR-224МД 300А;

parameters AWR-224МД
Digital high-speed camera «Baumer»
FEB-315 «MAGMA»

held pre-focus projector at the welding arc, as well

as focus digital video camera.
The launch complex is carried out in the following order:
Includes a power source arc and an additional light source when idling.
Turns DVR settings, a computer and a digital camera in the standby mode.
Set up the necessary welding parameters and video recording options (using special software installed on a computer).
Raised arc.
During the welding process is carried out using the registration parameters recorder of welding parameters. After the termination of the process of registering, terminate power supply to the welding arc.
Then going the image processing and processing welding parameters on computer. After processing, the video file is saved, change the parameters of the welding then the process is repeated.

composition, wire diameter 1.6 and 1.2 mm
The kinetics of

flux cored wire melting

flux cored wire in the mixture of gases Ar

+ CO2 with metal transfer without short-circuit the arc gap (sequence of frames within the same microcycle 1-9)

in a mixture of gases Ar + CO2 with

metal transfer without short-circuit arc gap

of melting and transfer of electrode metal when welding

by a powder wire allowed to reveal a number of features which allow to formulate criteria to algorithms of management of power parameters of the modes of welding of self-protective powder wire, and also to systematize nature of influence of characteristics of the heatmass transfer accompanying processes of arc welding with the melting electrode on stability of formation of metal of a seam from fusion.

transfer of electrode metal in a welding pool can

become a good methodological basis for development of the algorithms of adaptive pulse management of power parameters of the mode of welding allowing to provide stability of characteristics of a heatmass transfer when welding and an adjustable heatinvestment in the processed product.