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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 ???


    
 
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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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