Product category:
Machinery and Production Equipment
News Release from: ESAB | Subject: ESAB Aristomig
Edited by the Engineeringtalk Editorial
Team on 13 December 2005
CD-Rom explains MIG welding
ESAB offers free CD-Rom called "Pulsed MIG Welding" that explains the features and benefits of this welding process, also sometimes referred to as pulsed MIG/MAG welding or pulsed arc MIG welding.
ESAB is offering a free CD-Rom called "Pulsed MIG Welding" that explains the features and benefits of this welding process, also sometimes referred to as pulsed MIG/MAG welding or pulsed arc MIG welding Often used for welding aluminium and stainless steel, as well as carbon steel, pulsed MIG welding produces a stable, spatter-free arc, even with low welding data
This article was originally published on Engineeringtalk on 19 Feb 2003 at 8.00am (UK)
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Pulsed MIG is popular for welding thin sheet material, as heat input and distortion are low.
Modern digital electronics let equipment such as the ESAB Aristomig control most of the welding parameters automatically, making it possible to produce high quality welds with little training.
The CD-Rom describes the short arc and spray arc welding processes, plus the thermal pulsing that is sometimes used with TIG.
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The shortcomings of these processes are outlined.
There follows an explanation of pulsed MIG welding.
This includes a discussion of arc length self-correction, wire stickout, material transport in the arc, and the critical current limit.
The advantages are highlighted and the limitations stated to give a balanced view.
Lines of synergy are important for optimised pulsed MIG welding and the Aristomig power source employs these.
When the user selects pulsed MIG from the settings on the welding machine, provided the correct filler wire material and diameter and shielding gas are used, the welding machine sets the optimum voltage and pulse parameters.
Whatever wire feed speed is used, the machine automatically adjusts the welding parameters to suit, thereby ensuring that the line of synergy is always followed.
Around 150 standard lines are stored on the machine, or the user can create new lines by manually setting the weld parameters at two points so the machine's microprocessors can calculate the intermediate points.
The CD-Rom explains the issues that need to be addressed within a pulsed MIG welding machine.
These include controlled melting of the filler wire, achieving droplet pinch-off without spatter, adapting to variations in wire stickout, drop short-circuit correction, short-circuit handling, and crater filling.
Modern digital power controls make it possible to measure welding parameters such as voltage during one welding pulse and adjust other parameters, such as background current and pulse length, within the same cycle.
This is achieved throughout the typical current pulse range of 30 to 300Hz. Request a free brochure from ESAB ...
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