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 -

NOVO DR
develops and manufactures cutting edge Portable Digital Radiography X-ray Inspection Systems.
1379 views
Technical Discussions
Hatem
NDT Inspector, QAQC
Csc- exp, Algeria, Joined Sep 2011, 58

Hatem

NDT Inspector, QAQC
Csc- exp,
Algeria,
Joined Sep 2011
58
20:16 Oct-16-2014
Radiography of turbine blade inconel 739

Dear NDT Specialist

I have to radiography welding repair of blade metal inconel 739 of 5mm thickness filler metal stellite 790, can any one have done it before or can you help me with your adivise about the procedure.,

Cheers

 
 Reply 
 
RENGARAJU. B. N.
NDT Inspector, NDT Level-III/Radiation Safety Officer(RSO)
Marine and Heavy Engineering Company, MALAYSIA., India, Joined Sep 2014, 106

RENGARAJU. B. N.

NDT Inspector, NDT Level-III/Radiation Safety Officer(RSO)
Marine and Heavy Engineering Company, MALAYSIA.,
India,
Joined Sep 2014
106
15:06 Oct-18-2014
Re: Radiography of turbine blade inconel 739
In Reply to Hatem at 20:16 Oct-16-2014 (Opening).

Dear Sir,

As basically you have to radiograph a weld, any standard radiography procedure for testing of welds may be selected, with following mandatory requirements:

1. Radiation source shall be X-Rays only, of suitable energy, to just penetrate 5 mm thickness.
2. The RT film shall be class-I

This combination with adequate precaution for avoiding any back-scatter may be able to give you a sensitivity of at least 2% i.e. 0.1mm dia. wire should be seen.

Interpretation and Evaluation shall be as per Acceptance standards for this job, if any.

Regards
Rengaraju. B. N.



 
 Reply 
 
vijayaraghavan P
Consultant,
Freelance consultant, India, Joined Dec 2009, 12

vijayaraghavan P

Consultant,
Freelance consultant,
India,
Joined Dec 2009
12
11:03 Oct-20-2014
Re: Radiography of turbine blade inconel 739
In Reply to Hatem at 20:16 Oct-16-2014 (Opening).

when you subject inconel alloys for RT, be cautious about the following
coarse grain in nickle alloys, will cause mottling effect on the radiographs because of x-ray diffraction. This will appear like linear defects but actually they are not defects. For confirmation take one more shot by tilting the tube 5 to 10 degree and increase voltage by another 15kv. If the indication is mottled one they will disappear.

 
 Reply 
 

Product Spotlight

YXLON Cougar EVO

Scalable small footprint X-ray inspection systems for assembly and laboratory applications. The
...
YXLON Cougar EVO series was designed to provide the "best-in- class" inspection solutions for SMT, semiconductor, and laboratory assembly applications, while maintaining a small system footprint for maximum convenience. With optimized software and hardware, these systems produce higher quality and more consistent results than other electronics inspection systems currently on the market.
>

FD800 Bench Top Flaw Detectors

The bench-top FD800 flaw detector range combines state-of-the-art flaw detection with advanced mater
...
ial thickness capabilities. Designed for use in the laboratory these gauges are the tool you need for all your flaw detecting needs.
>

FMC/TFM

Next generation for Phased Array UT is here now with FMC/TFM! Have higher resolution imaging, impr
...
oved signal to noise ratio, characterize, size and analyze defects better with access to several wave mode views and save raw FMC data for higher quality analysis.  Some of the benefits are:
  • Beautiful Image! Easier to understand what you're looking at
  • Completely focused in entire image or volume
  • Much easier to define setups before inspection
  • Easier to decipher geometry echoes from real defects
  • Oriented defects (e.g. cracks) are imaged better
  • See image from different wave modes from one FMC inspection
  • FMC data can be reprocessed/analyzed without going back to the field
>

NEW - TD Focus-ScanRX

The NEW Next Generation Advanced UT platform, TD Focus ScanRX - Also available as a card stack solut
...
ion. Key Improvements 1. Data acquisition is significantly faster than current design 2. Better aesthetic – closely aligns with HandyScan RX 3. Improved IP rating (Target IP66) 4. Ruggedized housing 5. Connectors are protected from impact and ingress 6. Integrated stand and separate retractable handle easy to keep clean) 7. Touchscreen with ruggedized display glass 8. 3-Axis encoder input
>

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