Re: [MW:13173] Preheating temperature of 2nd process when use two welding process in one single joint (GTAW+SMAW)

DEAR EXPERTS,

When we are using two process (GTAW+SMAW) you told that the temperature is 95 degree after hotpass.

IN ASME THEY HAVE GIVEN THAT 55 DEGREE TOLLERANCE FROM THE TEMPERATURE YOU GOT.

SO (95-55=40 DEGREE) IS TAKEN AS A PREHEAT TEMPERATURE FOR SMAW PROCESS.

RAVIVARMAN.M

QA/QC ENGINEER

LAHOUD ENGINEERING CO. LTD.

On Sat, Dec 3, 2011 at 12:18 PM, muthu barathi <muthu_barathi@rediffmail.com> wrote:

Yes you can consider it is as preheat and check with your WPS for preheat
requirements. For example if the preheat is 120 degree then increase
temperature to 120 deg and start weld.

On Wed, 30 Nov 2011 13:30:07 +0530 wrote
>

v:* {behavior:url (#default#vml);}

Dear Experts,

When we are using two process (GTAW + SMAW) on pipe test coupon of a PQR,Root
run & hot is done withGTAWprocess, immediately after hot passwe have started

SMAW process,

Prior to start of SMAW process, temperature of coupon noted was 95 deg C

My question is whether this 95deg C will be considered as preheating
temperature for SMAW process

Kindly advise in the light ASME Codes

Thanksin advance

Mhaskar Aly
UAE

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Dear Sir,

Thanking You,

Honesty is the best Policy

With Warm Regards,

Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951

Follow Rediff Deal ho jaye! to get exciting offers in your city everyday.

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