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 -

646 views
Technical Discussions
P. Bushart
P. Bushart
00:44 Sep-22-2003
NDT casting

I have been reviewing the available methods to inspect for porosity in castings. Our situation is low pressure fluid mixing and we have had our cast housings seep fluid out. The housings are cast staniless steel and then machined. Would die penetrant testing be enough to ensure no leakage?


 
 Reply 
 
Daniel H. Rice
Consultant, Ultrasonic Evaluation of Resistance Spot Welding
Daniel H. Rice Consulting Services, USA, Joined Jan 2003, 10

Daniel H. Rice

Consultant, Ultrasonic Evaluation of Resistance Spot Welding
Daniel H. Rice Consulting Services,
USA,
Joined Jan 2003
10
03:47 Sep-24-2003
Re: NDT casting
----------- Start Original Message -----------
: I have been reviewing the available methods to inspect for porosity in castings. Our situation is low pressure fluid mixing and we have had our cast housings seep fluid out. The housings are cast staniless steel and then machined. Would die penetrant testing be enough to ensure no leakage?
------------ End Original Message ------------
Use this procedure except change to Florcent dye, and take your soak time to for the dye to 30 min at 80*F to 55*F, Water washable dye will work as good.

Having made pressure vessels "valve bodies" in a foundy I know your delemia.
Dye Penetrant will not completely identify all the leakers!
make a low pressure HYDRO test at 4 times the operational pressure as described in Section 3 of the ASME boiler and pressure vessel code.
Add A significant amount of Florscent dye to Highlight the leakers, These leakers are caused from the shrinkage cavities, sand, and other discontinuities. Use a black light to see the leakers, you will be suprised.

A comon Floresent, drop light for the garage and a black light bulb will work. Although intensity of the black light will be low.

Solution I had to use,...Check what impregenation would cost and if the application is for this manufacturing situation is revealant.




 
 Reply 
 
bill kiesel
NDT Inspector, level III L.P.I., X-RAY & U.T.
Smiths Tubular Systems-Laconia, USA, Joined Aug 2002, 4

bill kiesel

NDT Inspector, level III L.P.I., X-RAY & U.T.
Smiths Tubular Systems-Laconia,
USA,
Joined Aug 2002
4
08:12 Sep-25-2003
Re: NDT casting
----------- Start Original Message -----------
: I have been reviewing the available methods to inspect for porosity in castings. Our situation is low pressure fluid mixing and we have had our cast housings seep fluid out. The housings are cast staniless steel and then machined. Would die penetrant testing be enough to ensure no leakage?
------------ End Original Message ------------

yes, dye penetrant would be the cheapest and one of the most effective ndt
>methods to find this type of defect. portable equipment is readily
>available.



 
 Reply 
 

Product Spotlight

NDT.net launches mobile-friendly design

NDT.net has revamped its website providing a mobile-friendly design.The front page received a comp
...
letely new design and all other sections are now reacting responsively on mobile devices. This has been a major step to make our website more user- friendly.
>

ISAFE3 Intrinsically Safe Sensor System

ISAFE3 intrinsically safe sensor system of Vallen Systeme is especially targeted at the petrochemica
...
l - as well as oil and gas transportation industry. The sensor system is designed for permanent monitoring or periodic inspection tasks. Sensors are available for different AE-frequency ranges optimized for corrosion and fatigue crack detection and other applications. The ISAFE 3 sensor system consists of an AE-sensor (model ISAS3) certified according to ATEX/IEC for installation in zone 0, gas group IIC, IP68, 20 to +60 °C, and a signal isolator (model SISO3) certified for installation in zone 2. An ISAS3 sensor can be mounted in atmosphere or submerged, e.g. in water or crude oil. It is supported by mounting tools for temporary (magnets) or permanent (welded) installation. ISAFE3 supports automatic sensor coupling test and can be used with any AE signal processor supporting 28V supply at 90 mA peak, e.g. Vallen Systeme ASIP-2/A.
>

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
>

VeeScan AirCraft Wheel Inspection

The VEESCAN offers maximum flexibility, has a proven mechanical design and records of breakdown-fr
...
ee operation of over 365 days. Appealing to companies in the Aerospace industry, the VEESCAN is ideal for all wheel-testing environments. With a wide selection of probes, the VeeScan allows your wheel testing facility the flexibility to select the most compatible configurations with their workload.
>

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