Content tagged with "mig"
Results: 22
Article
March 1, 2010
Beyond low-carbon steel
Figure 1 Certain alloys, such as the high-carbon steel used in this caster roll, require sufficient preheat, which slows cooling after welding and helps prevent cracking. The economy has pushed fabricators to adapt, market themselves to bring in new work, and even pursue untapped... Read more...
Article
January 12, 2010
Keeping sight of the little things
Choosing the right robotic GMAW gun, consumables, and wire can be just as important to productivity and weld quality as the power source, tooling, and robotic arm. Robotic gas metal arc welding (GMAW) can provide companies with significant gains in productivity and excellent return on... Read more...
Article
September 25, 2009
Welding her way outside the box
Pamela Olin creates the "Cascading Cubes" archway for HC's permanent art collection. These steel cubes are the final exam for the college's welding certificate program. Photos courtesy of Erin Brooks, Harper College, Palatine, Ill. It's no accident that Pamela Olin's viewpoints on life... Read more...
Article
September 6, 2009
Robotic GTAW or GMAW: No longer a clear-cut choice
Figure 1 Technology advancements have made GTAW easier to automate. Photo courtesy of The Lincoln Electric Co. Robotic systems manufacturers and integrators have a confession when it comes to TIG, or gas tungsten arc welding: They've sometimes steered people away from it. "I've worked... Read more...
Article
September 1, 2009
Preparing for GMAW, back to basics: All about setup
Of all the welding processes, gas metal arc welding is the easiest to learn. However, setting up a GMAW system isn't quite so straightforward. The wire feed process is all about setup, really, and improper setup can lead to some major problems.
If machine settings are... Read more...
Spanish
August 17, 2009
Spanish
July 23, 2009
Automatizando lo pequeño
Figura 1
Dados los parámetros correctos, los robots soldadores pueden aumentar la eficiencia, incluso con las producciones más pequeñas de partes.
Recientemente le cortaron el pelo a mi hijo. Es un niño, por lo que el peluquero no tiene que cortarle demasiado cabello, pero a sus 5... Read more...
Article
March 24, 2009
Smooth wire feeding, smooth welding
Figure 1
Welders often take inconvenience for granted. If a wire feeds inconsistently, or if setup takes forever and a day, so be it. It's the way it's always been, so why question it? Nevertheless, questioning everything is a key tenet of lean manufacturing, and it need not be... Read more...
Article
March 24, 2009
Smooth moves with GMAW
To steady your hand, brace your elbow or upper arm against a tabletop or other secure object.
Welders of the world have a secret: Gas metal arc welding really isn't that difficult, if you have the correct equipment setup, if you can see the wire feeding into the weld, if you move... Read more...
Article
March 10, 2009
You can plasma cut it, but can you weld it?
A lot happens in a plasma arc from its generation at the electrode surface to the workpiece. Among numerous other factors, the plasma forming gas and its surrounding shield material, be it gas or liquid, play a major role in the final cut quality.
A high-quality cut is characterized by a low... Read more...
Article
December 14, 2008
Pulse welding eases exotic-metal fabrication
Fundamentally, steelmaking electric arc furnaces transfer energy—lots of it. Used at mini-mills throughout the world, the furnaces' graphite electrodes melt metal scrap and burn out chemical impurities. And water-cooled pipes are central to the design. The better they transfer heat and... Read more...
Article
October 28, 2008
The root causes of weld defects
Weld defects happen for a host of reasons. Air may creep into the weldment to cause porosity. The wrong amount of heat can cause cracking. Bad welding technique can cause undercuts or incomplete penetrations of one kind or another. Various factors contribute to weld problems, but many lead... Read more...
Article
September 26, 2008
A 'Case' for agility
Figure 1 Three identical robotic welding systems stand in a row, each system controlled by one operator. All Case New Holland robot operators are certified welders. Case New Holland (CNH), the global agricultural and construction equipment giant, is bursting at the seams. Its Fargo, N.D.,... Read more...
Article
September 16, 2008
Automating the Small
Figure 1
Given the right parameters, welding robots can increase efficiency, even with the shortest part runs.
My son got a haircut recently. He's a kid, so the barber didn't have to cut too much hair, but being 5, my son required some time to get him seated and adjusted to a... Read more...
Article
August 26, 2008
Welder training essentials: Positioning it right
Figure 1
Click image to view larger ASME Section IX specifies the ranges of production welding positions.
They've been used since the first Section IX of the ASME "Boiler and Pressure Vessel Code" emerged in 1941, and most likely before. They've been a mainstay of welding schools... Read more...
Article
June 17, 2008
Tips for troubleshooting GMAW consumables
Making a high-quality gas metal arc weld is no easy task. But making a high-quality weld when your gun and consumables aren't functioning properly is just about impossible. Porosity, excessive spatter, undercut, and burnback are just a few of the problems that can occur when something's not... Read more...
Article
May 9, 2006
Optimizing flow through robotic welding workcells
Figure 1
One of the new CNH systems welds on a loader chassis. Veteran industrial robotic user Case New Holland (CNH), Fargo, N.D., recently installed three robotic welding systems. Each system consists of an inverted robot on a large, three-axis traveling column and two... Read more...
Article
March 7, 2006
A new way to weld sheet metal
Figure 1 Nu-Way Industries Inc. turned to laser seam welding to fabricate this stainless steel microwave enclosure. The old way didn't work for Nu-Way Industries Inc., Des Plaines, Ill. The large custom sheet metal fabricator needed a new method of welding to replace the traditional... Read more...
Article
November 8, 2005
Details on Domex 700 MC
I'm a welding engineer at a company that recently upgraded one of its applications to the extra-high-strength steel Domex® 700 MC. What do you recommend regarding joint preparation and welding of Domex 700 MC? Milling and thermal cutting (gas, plasma, or laser cutting) are the most... Read more...
Article
April 11, 2005
MIG welding tips and resources
Photo courtesy of AlcoTec Wire Corp. Motorcycle- and hot rod-building shows on TV have put welding in a very positive light lately. In fact, Jesse James, the star of Discovery Channel's "Monster Garage," was named the American Welding Society (AWS) Welder of the Year because of his... Read more...
Article
January 11, 2005
More about MIG welding
Editor's Note: This article is a companion piece to Marty Rice's article MIG welding—The basics and then some . My first time using MIG (also called gas metal arc welding, GMAW) in the field was working on four stainless steel hoppers (tanks) at an Owens Corning plant. X-rays of the... Read more...
Article
July 13, 2004
MIG welding—The basics and then some
Photo courtesy of The Lincoln Electric Company. "You ran much MIG?" the foreman asked. "Yeah (I lied), quite a bit." Heck, I didn't even know what MIG was! I had been welding a couple of semesters at a vocational college and had gotten pretty good with stick welding. So Phil Newell, the... Read more...
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