- published: 14 Apr 2012
- views: 1724803
Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) welding or metal active gas (MAG) welding, is a welding process in which an electric arc forms between a consumable wire electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to melt, and join.
Along with the wire electrode, a shielding gas feeds through the welding gun, which shields the process from contaminants in the air. The process can be semi-automatic or automatic. A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as alternating current, can be used. There are four primary methods of metal transfer in GMAW, called globular, short-circuiting, spray, and pulsed-spray, each of which has distinct properties and corresponding advantages and limitations.
Originally developed for welding aluminum and other non-ferrous materials in the 1940s, GMAW was soon applied to steels because it provided faster welding time compared to other welding processes. The cost of inert gas limited its use in steels until several years later, when the use of semi-inert gases such as carbon dioxide became common. Further developments during the 1950s and 1960s gave the process more versatility and as a result, it became a highly used industrial process. Today, GMAW is the most common industrial welding process, preferred for its versatility, speed and the relative ease of adapting the process to robotic automation. Unlike welding processes that do not employ a shielding gas, such as shielded metal arc welding, it is rarely used outdoors or in other areas of air volatility. A related process, flux cored arc welding, often does not use a shielding gas, but instead employs an electrode wire that is hollow and filled with flux.
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This is part 1 in a series on Mig Welding Basics aka How to mig weld. for a more detailed article on mig welding basics go to... http://www.weldingtipsandtricks.com/mig-welding-basics.html In this video, I show some basics on setting up a mig welder along with some instructive arc shots of what it looks like when you have correct voltage and wire speed as opposed to what it looks like when you have too low a wire speed or too high a wire speed setting. visit the store at http://weldmongerstore.com/
Mig Welding Technique for horizontal and flat laps and tees by-- http://www.weldingtipsandtricks.com/mig-welding-technique-horizontal.html I learned this mig welding technique over 20 years ago and have gotten a lot of mileage out of it. I use it for almost everything because it is simple and it works. What more could you ask for? For more Down and Dirty mig welding tips, click on the link and you will see a pantload of good tips. Go ahead.
Click on the link below to view my latest video on MIG Welding - Square Tubing: http://youtu.be/8NUFYGE4Lug In this video I am going to be discussing MIG Welding square tubing by introducing you to the types of welds involved, and demonstrating how they are produced. I hope you will enjoy the video, and if so, please hit the "Like" button after watching. Also, don't forget to subscribe to my YouTube Channel so you can be updated whenever I post a new video. Take Care, Dan
Interested in A Career In Welding? Click Here: http://www.georgiatradeschool.com/ ChuckE2009 Facebook Page: https://www.facebook.com/pages/ChuckE2009/282164941819994 Want to see all the parts of this series in easy to follow, playlist form? Simply click this link: http://www.youtube.com/playlist?list=SP_P7k0CDx5cWywuZRYRd3HDZuvy7mTH0k Products displayed in this series: Jackson Balder WH70 BH3: http://www.kcprofessional.com/products/welding/auto-darkening-welding-helmets/w70-variable-adf-w-balder-technology-welding-helmets/37191-jackson-safety-wh70-bh3-helmet-with-balder-technology http://www.amazon.com/Jackson-Safety-Darkening-Welding-Technology/dp/B00AAQ4ZPK Jackson Nemesis Safety Glasses: http://www.kcprofessional.com/products/ppe/eyewear/spunbond/20378-jackson-safety-v30-nemesi...
Interested in MIG welding lessons? Here's a YouTube playlist that will take you through initial machine setup, as well as horizontal, vertical, and even overhead welding... Interested in A Career In Welding? Click Here: http://www.georgiatradeschool.com/ ChuckE2009 Facebook Page: https://www.facebook.com/pages/ChuckE2009/282164941819994 You can learn MIG for free: http://www.youtube.com/playlist?list=SP_P7k0CDx5cWywuZRYRd3HDZuvy7mTH0k Having issues with your mig welds? We'll take a look at a number of common problems (been there, done that) in this How Not To Weld video on the GMAW (Gas Metal Arc Welding) Process. Here's what we talk about, in order: Traveling Too Fast Traveling Too Slow Too Much WFS (Wire Feed Speed) Too Little WFS (Wire Feed Speed) Too Much Stick-Out Not En...
Visit the weldmonger store http://weldmongerstore.com/ This is mig welding basics part 5 and its time to get some practice. http://jflf.org/ james f lincoln foundation is a little known resource where you can find welding books and even metal project kits. for a more detailed article on mig welding basics go to http://www.weldingtipsandtricks.com/mig-welding-basics.html
Pendarivs Manufacturing offers MIG welding services in the Southern California area. MIG (metal inert gas) welding is offered in aluminum, stainless steel and structural steel. The above video shows one of our employees working on carbon steel pipe. For more information on our welding services, visit http://www.pendarvismanufacturing.com.
Ever wonder which is stronger? Each method has its own group of loyal "users", and its own advantages and drawbacks... I'll be honest, which you should use is simply personal preference 99% of the time, but I decided to make a video, and do a simple break test comparison of the two. Enjoy!! Interested in A Career In Welding? Click Here: http://www.georgiatradeschool.com/ ChuckE2009 Facebook Page: https://www.facebook.com/pages/ChuckE2009/282164941819994 Got ideas for future break-test videos? Lets hear em!! :) Where to look at all HTP America products: http://www.usaweld.com/default.asp The "Swan-Neck" gun that fits my Hobart 187, and other Miller/Hobart machines: http://www.usaweld.com/15-Flexible-Swan-Neck-Gun-fits-Miller-Welders-p/m2015-fsbe.htm It honestly isnt a bad upgrade,...