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950 views
00:20 Apr-10-2007
Justin Cavanagh
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 ???


 
07:26 Apr-10-2007

Tom Nelligan

Engineering,
retired,
USA,
Joined Nov 1998
390
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 ------------




 
03:44 Apr-10-2007
Justin Cavanagh
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 ------------




 
04:16 Apr-11-2007

Borja Lopez

Director
Innerspec Technologies,
USA,
Joined Jun 2002
35
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


 
03:24 Apr-12-2007
Massimo Carminati
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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