Gas purging is not required for SMAW /FCAW process, that is it is depend on process also
bare wire welding process like TIG/PAW/GMAW, purging is required
Pandithan
Cethar Ltd
Trichy
On Sat, Jul 30, 2011 at 7:29 AM, sudhakar kuppuswamy <mechsudhakar@gmail.com> wrote:
Gas Purging is done to avoid oxidation during welding. Gas purging is Mandatory to all material which responds to oxidation during welding irrespective of process.. generally when the Cr content exceeds more that 2.5 % in overall composition of a particular material inert gas purging should be done before welding.... I don't think by using MIG process we can avoid puring!!!Mr Prasad can I know for what material your talking about???regardssudhakar.k
--n Fri, Jul 29, 2011 at 8:41 PM, abdul khan <abdul_khan2010@yahoo.co.in> wrote:
From: Prasu Cutie <pracuty@gmail.com>
Subject: [MW:11977] gas purging
To: materials-welding@googlegroups.com
Date: Friday, 29 July, 2011, 5:01 PM
Why gas purging is not mandatory for MIG welding as it is mostly used for TIG welding?
In MIG welding i found contamination is very lass as compared to TIG welding without purging.
Can any one clarify me??????
Regards
Prasad
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With regards,
Sudhakar.k--
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