Gas Metal Arc Welding (GMAW) or MIG Welding


Gas Metal Arc Welding is generally known  as MIG (Metal Inert Gas) welding.  Metal Inert Gas (MIG) welding is a commonly used high deposition rate welding process.  Wire is continuously supplied from a spool.  MIG welding is known to as a semiautomatic welding process.

Principle of Operation

Gas Metal Arc Welding (GMAW) or MIG Welding
Gas and water flow are checked again and again before catching the fire (igniting). Proper current and wire feed speed is set and the electrical connections are ensured. There are two methods to struck the arc. 
In the first method current is passing and shielding gas is switched on to flow. Now the electrode is scratched against the job like normal practice for striking the arc. 
In the second method, electrode touches the job, retracted and then   moved forward to carry out the welding;  before striking the arc, shielding gas, water and current is switched on. About 15 mm length of the electrode is out of the torch before striking the arc. During welding, torch remains about 10-12 mm the job and length should be between 1.5 to 4 mm. Arc length is maintained constant by using t self-adjusted arc, and self-controlled arc in semi-automatic (manually operated) and automatic welding sets respectively.

3 comments:

  1. Thanks for sharing such a nice and Informative blog.Keep posting information like this. You can also check Precision Drawell website for Mig Welding Wire Manufacturers.

    ReplyDelete
  2. We are leading stainless steel wires manufacturers engaged in MIG Wire, TIG Wire, Stainless Welding,plasmacutterarena

    ReplyDelete
  3. A bit informative of how MIG welding works as explained on the Principle of Operation. Hope to see more of MIG welding articles in the future here in your blog. Thank you for sharing.

    ReplyDelete

 

Copyright © Mechanical Engineering Design by Free CSS Templates | Blogger Theme by BTDesigner | Powered by Blogger