Re: [MW:26250] Shielding gas for GMAW pulsed welding-Carbon Steel

Dear Mr Pandithan,

In the machine I have selected the pulse mode itself. (GMAW-P). The position I am using is IG(rotating ) . As I am using the synergy mode in the machine the current and voltage is getting selected automatically when I am giving the wire feed speed. I am using the wire feed speed of 9.5 m/min, the voltage coming is in range 25V -28V and current in range 215 to 230. How to ensure I am not using the short circuiting mode?? I am using this process for pipe welding which includes both high and low thickness.

Regards,

Aby

On Wed, Mar 22, 2017 at 9:02 AM, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

As argon increase, %of penetration will come down and may get into porosity .  Try with 85+15 with current of >250amps. spatter is inevitable in this process, u can reduce by another option with GMAW-P. If u work in Spray mode, spatter stiking into base metal will be less due to its sizes

THANKS & BEST REGARDS,

KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Tue, Mar 21, 2017 at 7:12 PM, Prasad Rao <prasadrao31@gmail.com> wrote:

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Try for 98% argon and 2% co2

On Tue, Mar 21, 2017 at 12:56 PM, Aby Jose <abycscec@gmail.com> wrote:

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Dear all,

What shielding gas should be used for the pulsed GMAW welding of carbon steel? When trying with 80%Ar+20%CO2 mixture I am getting a lot of spatters. The welding used is Automatic welding with Robotic machine.

Any recommendations???

Regards,

Aby

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