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Technical Discussions
Sandeep Ekka
Sandeep Ekka
06:43 Jan-08-2004
NDT for LPG cylinders to identify the same heat treated or not

LPG cylinders are Hot rolled mild steel 2.7mm thickness. Cylinders after deep drawing and welding are subjected to Heat treatment to a certain temperature and for a specific period. This is done to remove brittlness and restore original mechanical properties. Presently we are testing the cylinders for % elongation, YS and TS and identifying whether cylinders are heat treated properly or not.
This is tedious, time consuming and uneconomical.
Is their any NDT techniqes available, by which we can identify that the cylinders are heat treated properly or not.

Regards
Sandeep


 
 Reply 
 
Ethan
Ethan
05:16 Jan-09-2004
Re: NDT for LPG cylinders to identify the same heat treated or not
Can you apply a toung's modulus or an elestic modulus value to the heat treat that you desire? If so there are standard formulae where you measure the Shear velocity and the longitudinal velocity (when knowing the density) to obtain these values. This might be some help

regards
e

----------- Start Original Message -----------
: LPG cylinders are Hot rolled mild steel 2.7mm thickness. Cylinders after deep drawing and welding are subjected to Heat treatment to a certain temperature and for a specific period. This is done to remove brittlness and restore original mechanical properties. Presently we are testing the cylinders for % elongation, YS and TS and identifying whether cylinders are heat treated properly or not.
: This is tedious, time consuming and uneconomical.
: Is their any NDT techniqes available, by which we can identify that the cylinders are heat treated properly or not.
: Regards
: Sandeep
------------ End Original Message ------------




 
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