Re: [MW:31055] How to check Argon Gas Purity?

Dear , 

In SFA 5.32 which gives the requirements for shielding gases, the requirement is to mention % composition to check if it is a single gas or mixed gas. So the code is not asking about the purity of the gas. 

     Purity of the gas is mentioned seperately as 99.997 %. This is more of a procurement parameter rather than welding.  

    As per my opinion, one should mention the percentage composition of the gas rather than purity in the wps format. 

Regards,

Charles V Jacob.

On Sun, Jun 28, 2020, 7:31 AM 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

The reason for having purity % in WPS is to check whether you use Single or mixture of gases which is an essential variable. Welding Grade Argon purity as per ASME Sec.IIC is 99.997%. In addition to this for Duplex & SDSS we mention the Oxygen ppm levels in the PQR & WPS

Thanks & Regards

J.Gerald Jayakumar

On Saturday, June 27, 2020, 09:24:03 PM GMT+7, Raja Varman <peraiyur.varman@gmail.com> wrote:

Normally you can get the Test certificate from the gas supplier about the purity of the gas.

Its enough to confirm the purity for WPS requirements.

என்றும் அன்புடன்,
Thanks & Regards,
RAJAVARMAN
+971561895584

On Fri, Jun 26, 2020, 7:35 PM Vinayak <vinayaknaik57@gmail.com> wrote:

what is the instrument name to check purity.

On Saturday, April 5, 2014 at 4:41:41 PM UTC+5:30, Richard robes wrote:

Mr.Prabhu,

You can check with Argon gas meter / Analyzer for 99.9 % purity or as per WPS requirements. Hope it's clear.

Regards

Richard

On Fri, Apr 4, 2014 at 4:18 PM, Maulik Thakkar <mlkth...@gmail.com> wrote:

You want to check which impurity?

Normally moisture/dew point need to be checked as per AWS 5.32. It should be less then 10.5 ppm.

To check moisture, dew point analyzer is available.

Regards,
Maulik
L&T, Welding engg. & Metallurgy

On Apr 4, 2014 5:31 PM, "prabhu" <prabhuj...@gmail.com> wrote:

Dear All,

 

I my doing work on SS material 316L , ensurinig clean and dust free area and surface but enable to rnsure the Argon gas purity.

please guid me how to ensure the gas .

Or is there any divice to check the Argon gas impurities.

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