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SungEun, Joo
R & D, UT
Prognosis Diagnosis Team, South Korea, Joined Jun 2013, 11

SungEun, Joo

R & D, UT
Prognosis Diagnosis Team,
South Korea,
Joined Jun 2013
11:57 Apr-06-2015
Super304H Tube PAUT
zoom image

I try to PAUT on 'Super304H' tube butt weld.(Thickness 4)
so I made a mock-up test piece(notch on surface, and root; refer to attached pic.)
but, couldn't detect a notch.
when probe position#1, can detect notch#4(0.5skip). but position#2, can not detect.
and when Probe position#3, can detect surface notch#5(with 1skip). but position#4, can not detect.
so I did bead flush. but result is same.
Resultingly, ultrasound can not pass through the welding part.
Is there any solution for PAUT?

Test detail is below

Equipment : OmniScan MX2(32:128PR)
Probe : 7.5CCEV35-16-A15
Wedge : SA15-N60S-IH 7.5CCEV35-16

Basic material : Super304H
Thickness 4mm
Welding rod : YT-304H SUMITOMO(18%Cr-9%Ni-3Cu-N)

I trust the proverb "A Problem Shared Is A Problem Halved"
please, help me.


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