Re: Hi Temp thickness of enamle on carbon.

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Re: Hi Temp thickness of enamle on carbon.
Posted by: Rolf Diederichs (PID_1), E-mail: rd@ndt.net, on March 14, 2000 at 16:47 :
In Reply to: Hi Temp thickness of enamle on carbon. posted by : M.C Macke on March 13, 2000 at 16:57:
: Without touching the piece, it is of major interest to know the
: thickness of the enamle coating on cast iron. The maximum thickness
: is 3mm. The key is to know this thickness at the initial
: solidification temp of 1000f...if there is to little, then he can
: add (t), this will help reduce the heating cycles and improve
: the Quality control. This system can be assemply line driven if
: proven reliable. The problems are 1000f and no contact. Emat is
: out, contact required! Mag Lift off...no! UT..2 TO 3 mm at 1000f,
: I don't know? Could Infrared be of some help or other optical
: method? This one is giving me a hard time of it!!!!
----------------
Be carefully by measuring under such hot conditions.
You can get calibration errors of sound velocity, also
the circumferential temperature may not be equal.
There is a company 'MOOG-BUHL AUTOMATION' which supplied
ultrasonic in this field, but measured more down the line.
Rolf

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: : Without touching the piece, it is of major interest to know the : : thickness of the enamle coating on cast iron. The maximum thickness : : is 3mm. The key is to know this thickness at the initial : : solidification temp of 1000f...if there is to little, then he can : : add (t), this will help reduce the heating cycles and improve : : the Quality control. This system can be assemply line driven if : : proven reliable. The problems are 1000f and no contact. Emat is : : out, contact required! Mag Lift off...no! UT..2 TO 3 mm at 1000f, : : I don't know? Could Infrared be of some help or other optical : : method? This one is giving me a hard time of it!!!! : ---------------- : Be carefully by measuring under such hot conditions. : You can get calibration errors of sound velocity, also : the circumferential temperature may not be equal. : There is a company 'MOOG-BUHL AUTOMATION' which supplied : ultrasonic in this field, but measured more down the line. : Rolf

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