Sunday, September 16, 2012

Re: [MW:15316] difference between MIG & MAG Welding

Mr. Asim Munir,

MIG & MAG both are divisions of GMAW (Gas Meal Arc Welding) process.

1. MIG- Metal Inert Gas uses,

   Argon(or) mixture of Argon(+) 20to25% Carbon DI-Oxide for welding of Carbon
   Steels.

   Argon(or) Argon(+) 2to3% Oxygen for welding non-ferrous metals like SS,AS,CU
   and all metals.

   Argon (or) Argon (+) Helium for AL and its alloys welding.

   It is non reactive and will not contribute further to any chemical & mechanical
   properties towards weld metal output.


2. MAG- Metal Active Gas uses,

   Carbon DI-Oxide for welding of Carbon Steels.
   No other metals can be welded other than CS with Carbon DI-Oxide.
   
   It is a reactive gas and will dis-integrate into C, CO and picks up additional
   Oxygen from Carbon Di-Oxide again due to continues supply of shielding gas. 

   Hence,a chain reaction happening at high arc temperatures.  

   It results in Carbon pick up to an extent of 0.1 to 0.20% or so in the base metal
   and a slight modification of chemical (addition of C) & mechanical properties
   (higher UTS values)  than the filler metal in the  weld metal output.

   sridhar.
-------------------------------------------------------------------------------------------


On 12/29/10, ASIM MUNIR <asimmu...@gmail.com> wrote:
> Dear all
> please guide about MIG and MAG welding and difference also.
> thankx in advance.
>
> --
> Regards,
> MUHAMMAD ASIM MUNIR
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