Re: [MW:26268] Shielding gas for GMAW pulsed welding-Carbon Steel

Yeah Mr Perumal. But by using Ar + 20% CO2 I am not able to control the spatter that is the problem.

Regards,

Aby

On Thu, Mar 23, 2017 at 4:13 PM, Perumal Govindan <perumalgovindan@gmail.com> wrote:

Hi Jose,

As per data sheet of ER70S-6, Bohler EMK 6, recommended composition of shielding gas is Ar + 15 to 25% of CO2.

Regards
P Govindan

On Mar 22, 2017 9:37 AM, "Aby Jose" <abycscec@gmail.com> wrote:

Hi Perumal,

I am using ER 70S6 and the manufacturer is Bohler.

Regards,

Aby

On Wed, Mar 22, 2017 at 9:17 AM, Perumal Govindan <perumalgovindan@gmail.com> wrote:

Hi Jose,
Please let me know the AWS classification of filler wire and brand used or please follow the manufacturer recommendation for choosing the shielding gas or refer the filler wire data sheet.

Regards
P Govindan

On Mar 22, 2017 06:35, "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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