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- since 1996 -
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Technical Discussions
Justin Cavanagh
Justin Cavanagh
00:20 Apr-10-2007
UT of cast iron at elevated tempratures

Has anyone got any advise for thickness inspections of cast iron valve bodies at elevated temps 280 degrees for example ???


 
 Reply 
 
Tom Nelligan
Engineering,
retired, USA, Joined Nov 1998, 390

Tom Nelligan

Engineering,
retired,
USA,
Joined Nov 1998
390
07:26 Apr-10-2007
Re: UT of cast iron at elevated tempratures
What is the maximum thickness that you need to measure? Generally, the best approach for that test would be to use a high temperature dual element transducers. Cast iron is grainy and produces a lot of scatter noise, but you should be able to measure more than 50 mm/2 inches at 2 MHz with an appropriate instrument.

Some general tips on high temperature ultrasonic testing can be found in the attached application note.

----------- Start Original Message -----------
: Has anyone got any advise for thickness inspections of cast iron valve bodies at elevated temps 280 degrees for example ???
------------ End Original Message ------------




 
 Reply 
 
Justin Cavanagh
Justin Cavanagh
03:44 Apr-10-2007
Re: UT of cast iron at elevated tempratures
The casting is about 50mm I have run a 2mhz probe over it when cold and found it effective. I was thinking that would be a good way to go sounds like I am on the right track. Will just have to buy a high temp probe.
Emat probes have also been sugested for this aplication.

----------- Start Original Message -----------
: What is the maximum thickness that you need to measure? Generally, the best approach for that test would be to use a high temperature dual element transducers. Cast iron is grainy and produces a lot of scatter noise, but you should be able to measure more than 50 mm/2 inches at 2 MHz with an appropriate instrument.
: Some general tips on high temperature ultrasonic testing can be found in the attached application note.
: : Has anyone got any advise for thickness inspections of cast iron valve bodies at elevated temps 280 degrees for example ???
------------ End Original Message ------------




 
 Reply 
 
Borja Lopez
Director
Innerspec Technologies, USA, Joined Jun 2002, 36

Borja Lopez

Director
Innerspec Technologies,
USA,
Joined Jun 2002
36
04:16 Apr-11-2007
Re: UT of cast iron at elevated tempratures
----------- Start Original Message -----------
: Has anyone got any advise for thickness inspections of cast iron valve bodies at elevated temps 280 degrees for example ???
------------ End Original Message ------------

This could be a good application for EMAT. Please visit our website for additional info www.innerspec.com


 
 Reply 
 
Massimo Carminati
Massimo Carminati
03:24 Apr-12-2007
Re: UT of cast iron at elevated tempratures
As an alternative to a dual element high temperature probe (a very good one is the d797 panametrics, but the temperature is critical). I've had excellent results using a 2MHz BB single element with a Vespel delay line with a proper delay.



 
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