[MW:2658] Re: Fw: [MW:2655] Repair WPS for 4130 to forge 4130

Hi,

 

Take care when doing PWHT. If the material is quenched and tempered (check with Material TC), the PWHT temperature shall be less than tempering temperature. Otherwise the tensile test will fail.

 

Regards,

Ibrahim

2009/7/12 Ali Asghari <asghariali@rocketmail.com>

dear steven
i think full GTAW is better than combined processes.but you must apply high preheat to prevent from excessive hardness & occuring cold crack .(due to high amount of Ceq)

----- Forwarded Message ----
From: Steven Ko <stevenkmko@gmail.com>
To: materials-welding@googlegroups.com
Sent: Saturday, July 11, 2009 3:34:33 PM
Subject: [MW:2655] Repair WPS for 4130 to forge 4130

Hi Everybody out there,

 

We are going to conduct a repair WPS on 25mm thks.4130 pipe mat'l to 4130 forge for mat'l strenght of 80KSi with Nace requirement.

Intend to do with full GTAW or combine with SMAW. 

Anybody had experience on it please advice and your comment is highly apperciated.

--
Thanks you,

Best regards,
Steven

--
Thanks & Regards
Muhammed Ibrahim PK

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