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224 views
09:31 Jul-14-2008
Jack Son
want to ask something in UT-phased array

1. For acceptance/ reject the welds, are we
i)comparing the amplitude of a surface notch (code requirement)
or
ii)measuring the depth of root penetration.

2.Cause of insufficient root penetrant.
i)root Gap?
ii)Weld current?
iii)welding speed?
iv)or other reason




 
01:04 Jul-15-2008
tj
Re: want to ask something in UT-phased array ----------- Start Original Message -----------
: 1. For acceptance/ reject the welds, are we
: i)comparing the amplitude of a surface notch (code requirement)
: or
: ii)measuring the depth of root penetration.
: 2.Cause of insufficient root penetrant.
: i)root Gap?
: ii)Weld current?
: iii)welding speed?
: iv)or other reason
------------ End Original Message ------------

Hi,
You should consult the spec for calibration requirements. The incomplete penetration is most likely due to insufficient current, however, torch angle and travel speed can play a definite role in your problem.


 


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