Non-magnetic Retaining Rings removal from 2 pole generator rotor
Non-magnetic Retaining Rings removal from 2 pole generator rotor
(OP)
Looking to any of the eng-tips pros who have the experience of removing the rotor retaining rings from 2 pole generators (scottyuk, epete....)
What is the temperature for removal of the retaining rings from the rotor ?
What is the temperature for fixing of the retaining rings ?
What is the temperature for removal of the retaining rings from the rotor ?
What is the temperature for fixing of the retaining rings ?
Muthu
www.edison.co.in





RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
Do not exceed 325C,
if 18-5, do not exceed 300C
doing so damages the heat treatment
at 90C delta, apply jacks and contine heating till free, maximum 288C expected
reassembly 288C with differitial less than 50C
wait 10 minutes, the mic to verify
then go for it
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
BTW, how do you plan to heat the end caps/retaining rings.
I have worked for companies that thought that the only way was induction heating and for companies that thought that the only way it could be done was with flame. Neither would be confused by the fact that others did it the other way.
rmw
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
Yours
Bill
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
rmw - I have been always the induction heating kinda guy. Clean elegant heating.
Bill - Thank you so much. Growing business. Travelling everywhere. Yeah, I know. Weak sauce.
Muthu
www.edison.co.in
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
After a few years on here I am becoming bi-lingual.
On this question I'll defer to the mechanical trades. Sorry Edison.
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
Regards,
Aditya
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
Addy171 - No locks/nuts/circlips were found. It's a 30 year old Brush machine that was never overhauled. You can imagine the end winding condition.
Thanks for your tips, gentlemen. Much appreciated.
Muthu
www.edison.co.in
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
I guess I should have added this note I read in the GEK
"— heating time 1/2 hour to 1 hour"
RE: Non-magnetic Retaining Rings removal from 2 pole generator rotor
It was a Brush rotor and it knew that it should have been heated with flame heat and not induction heating (or so the Brush lads would tell you.)
I got back to this thread too late to tell you that I thought you might be heating the rotor teeth as well as the end caps with the induction method.
Which machine is it? And, if it is that old, it is probably 18-5 metallurgy. Are you going back with 18-18? If you are getting them from Brush, you better start planning a bank robbery somewhere.
I do have a good mental picture of what the end windings look like. Good luck.
rmw