Product category:
Arc welding equipment, manual and automatic
News Release from: ESAB | Subject: 'Pulsed MIG Welding' CD-Rom
Edited by the Manufacturingtalk Editorial
Team on 13 December 2005
CR-Rom explains pulsed-MIG welding
A free 'Pulsed MIG Welding' CD-Rom explains the features and benefits of this versatile welding process, also sometimes referred to as pulsed MIG/MAG welding or pulsed arc MIG welding.
ESAB is offering a free 'Pulsed MIG Welding' CD-Rom that explains the features and benefits of this versatile 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 Manufacturingtalk on 14 Apr 2008 at 8.00am (UK)
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Pulsed MIG is particularly popular for welding thin sheet material, as heat input and distortion are low.
One of the major benefits of the process is that modern digital electronics enable equipment such as the ESAB AristoMig to control most of the welding parameters fully automatically, making it easy to produce high quality welds with only minimal training.
The CD-Rom starts by describing the short arc and spray arc welding processes, plus the thermal pulsing that is sometimes used with TIG.
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Rutile cored stainless steel welding wires provide excellent weldability on conventional non-pulsing power sources and have a low spatter level in smooth spray arc mode.
Guide to manual metal arc welding issued
A guide to manual metal arc welding includes information on analogue and digital remote controls as well as ranges of arc welding machines.
Furthermore, the shortcomings of these processes are outlined.
There then follows a thorough 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.
All of the advantages are highlighted, and the limitations are stated in order to give a balanced view.
Lines of synergy are important for optimised pulsed MIG welding and the ESAB AristoMig power source employs these to deliver the ultimate in ease of use.
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 that the machine's microprocessors can calculate the intermediate points.
The CD-Rom includes a detailed explanation of the various issues that need to be addressed within a state-of-the-art 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 (DSC) correction, short-circuit handling, and crater filling.
Thanks to the use of modern high-speed digital power controls, it is 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.
ESAB's 'Pulsed MIG Welding' CD-Rom is an excellent resource for anyone considering switching to this process from the alternatives.
In addition, for those who already have an Aristo 2000, the description of how to create new synergic lines will be extremely useful. Request a free brochure from ESAB ...
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