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Sakthitharan
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Join Date: Aug 2011
Posts: 16

Low Impact Value in Welds

06/15/2012 3:19 AM

Hi,

What could be the reason for getting low impact test values in the FCAW Weld.

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PWSlack
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#1

Re: LOW IMPACT VALUE IN WELDS.

06/15/2012 3:27 AM

Incorrect or insufficient PWHT?

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PWSlack
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#2

Re: LOW IMPACT VALUE IN WELDS.

06/15/2012 4:02 AM

Guano weld?

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PWSlack
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#3

Re: LOW IMPACT VALUE IN WELDS.

06/15/2012 4:06 AM

RTFM problem?

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PWSlack
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#4

Re: LOW IMPACT VALUE IN WELDS.

06/15/2012 5:37 AM

Go on. Do tell.

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Nothing is Impossible
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#5

Re: Low Impact Value in Welds

06/15/2012 11:18 PM

what grade material

what thickness

what class , brand and type of FCAW consumable

what was ambient temperature in the environment on the day

any preheat or post heat used ?

what were the weld parameters used ( arc voltage , wire feed , heat input mm/min ) ?

was the consumable oven conditioned before use or was it stored in a cold wet place outdoors as per the American standard A.S-DNGAF
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jmart23
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#6

Re: Low Impact Value in Welds

06/16/2012 10:23 AM

Did you do a PQR? Were your results the same? I would guess not or you would have already corrected the problem. Is your WPS being followed? amps, rate of feed, correct preheat, PWHT?I have seen welders swear they were following the correct preheat (rosebud) and did not have torch within fifty feet! Is your welding wire correct, how is it managed, who issues the wire, how is it stored?
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