where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -
1318 views
Technical Discussions
T.j
Engineering,
China, Joined Feb 2007, 2

T.j

Engineering,
China,
Joined Feb 2007
2
07:54 May-25-2007
How to inspect the rings with UT

hello,Does anyone know how to inspect the forge rings with UT,sometimes we found the cracks on the inner surface or on the port, and the surface is rough, so we can't use MPI or LPI, your advise would be highly appreciated. thank you!


 
 Reply 
 
Dave
Dave
05:40 May-29-2007
Re: How to inspect the rings with UT
I assume they are quite large steel rings, check out ASTM A388, surface finish is very important for UT. Rings and hollow forgings should be examined with straight beam and angle beam probes (angles, scan surfaces depend on size).
reference blocks with flat bottom holes and notches are usually required although DGS is also allowed in some cases.
If the surface is scaled you have to remove but if the surface has forging die marks you will have to get it machined to gat any useful results from UT. A388 recommends you not exceed 250micro inch unless agreed before hand.
As with many NDT methods, surface finish is critical for a good result.

----------- Start Original Message -----------
: hello,Does anyone know how to inspect the forge rings with UT,sometimes we found the cracks on the inner surface or on the port, and the surface is rough, so we can't use MPI or LPI, your advise would be highly appreciated. thank you!
------------ End Original Message ------------




 
 Reply 
 
Joe Buckley
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 524

Joe Buckley

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
524
03:15 May-29-2007
Re: How to inspect the rings with UT
Depending on the Geometry/access you may find eddy current with an Orthogonal coil probe (as used for weld inspection) worth a try - It is quite tolerant of poor surface finish and or mild scaling

Joe

----------- Start Original Message -----------
: I assume they are quite large steel rings, check out ASTM A388, surface finish is very important for UT. Rings and hollow forgings should be examined with straight beam and angle beam probes (angles, scan surfaces depend on size).
: reference blocks with flat bottom holes and notches are usually required although DGS is also allowed in some cases.
: If the surface is scaled you have to remove but if the surface has forging die marks you will have to get it machined to gat any useful results from UT. A388 recommends you not exceed 250micro inch unless agreed before hand.
: As with many NDT methods, surface finish is critical for a good result.
: : hello,Does anyone know how to inspect the forge rings with UT,sometimes we found the cracks onthe inner surface or on the port, and the surface is rough, so we can't use MPI or LPI, your advise would be highly appreciated. thank you!
------------ End Original Message ------------




 
 Reply 
 
T.j
T.j
02:16 May-30-2007
Re: How to inspect the rings with UT
Thank you for your advise,you are right,they are quite large forge rings,the diameter of inner ring is about 1400mm,and the diameter of outer ring is about 1500mm.we would test with UT when we receiving them,
Before we didn't test them, but we found cracks near the surface about 3mm after we machined them.OK
i will check out ASTM A388.
thank you very much~


----------- Start Original Message -----------
: I assume they are quite large steel rings, check out ASTM A388, surface finish is very important for UT. Rings and hollow forgings should be examined with straight beam and angle beam probes (angles, scan surfaces depend on size).
: reference blocks with flat bottom holes and notches are usually required although DGS is also allowed in some cases.
: If the surface is scaled you have to remove but if the surface has forging die marks you will have to get it machined to gat any useful results from UT. A388 recommends you not exceed 250micro inch unless agreed before hand.
: As with many NDT methods, surface finish is critical for a good result.
: : hello,Does anyone know how to inspect the forge rings with UT,sometimes we found the cracks on the inner surface or on the port, and the surface is rough, so we can't use MPI or LPI, your advise would be highly appreciated. thank you!
------------ End Original Message ------------




 
 Reply 
 

Product Spotlight

High-end Ultrasonic Flaw Detector with 32:128PR PAUT and 2-ch TOFD: SyncScan 2

SIUI’s newly launched SyncScan 2, is a high-end ultrasonic flaw detector with 32:128PR PAUT and
...
2-ch TOFD, which can maximize your efficiency for PA and TOFD. ● Support PA/TOFD/UT ● 32-ch PA is more suitable for inspection on extra-thick wall and high-attenuation material. ● 32-ch PA and 2-ch TOFD work simultaneously. ● Support PR mode for corrosion inspection.
>

MIZ®-21C: Truly Affordable Eddy Current Handheld with Surface Array Capability

Introducing MIZ-21C, the first truly affordable handheld eddy current instrument with surface array
...
capabilities. MIZ-21C can deliver fast, accurate inspections in demanding NDT applications including aerospace, oil and gas, manufacturing, and power generation. The surface array solution can reduce inspection time by up to 95% compared to traditional handheld pencil probes. The ergonomic design, long battery life, and intuitive touchscreen mean you can inspect more areas faster than ever without fatigue.
>

Surf-X® Array Probe

Introducing the Surf-X family of flexible Eddy Current Array (ECA) probes. Featuring unique multiple
...
coil sets and proprietary X-PROBE technology, Surf-X array probes can quickly and accurately handle a range of inspection applications, from inspecting corrosion or cracking in pipes, pressure vessels, or tanks, to assessing and sizing cracks in raised welds and friction stir welds.
>

NEW Wheel Type Phased Array Probe

DOPPLER NEW Wheel Type Phased Array Probe, more stable, new tyre makes lesser acoustic attenuation
...
, much lighter makes easier to handle, more slim size, magnetic and mechanical encoder optional etc...more
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window