The Craftmans Shop > New from Old
Resurrection of a CFEI 100 KVA Induction Furnace
Sea.dog:
Very interesting read.
It describes the precise failure mode that you have, Andrew. A torque transmission seal where, at some time or other, the seal faces have bound together and, when the pump has been restarted, the stiction has been sufficient to unwind the spring a few turns thereby causing its failure.
awemawson:
Yes Seadog and reading that article it seems using the spring is the later version, and the spare I've been supplied is the earlier one where there is positive drive from those pressed steel cups.
Well the kit seems to be compatible, anyway for better of for worse the pump is now back together - hoo-blooming-ray it's been a long time coming. I won't be able to test it's sealing abilities until the pump is re-installed, and that can't happen until the last of the plumbing arrives hopefully by the end of this week.
I assembled the O rings and seals with copious amounts of washing up liquid as a lubricant so no doubt it will froth a bit to begin with. But before that I finished the clean up of the internal components, and I must say they've shone up very well, far better than I expected :thumbup:
mattinker:
Hi Andrew,
It's good to see it going back together again! If there was a like button I'd use it! Are you planning on casting iron? Looking for ward to seeing it working!
Cheers, Matthew.
awemawson:
Matthew, at this rate I'll be glad just to get a bit of old steel bar glowing in the crucible !
Long way to go yet. Hopefully the Chiller will soon be sorted, but I need to start deciding on a layout in the foundry. Chiller needs to be plumbed to the Furnace Driver which is then plumbed to the Furnace Body where the actual crucible is and all need heavy cabling and pipes and can't really be moved once set up. In the case of the Furnace Driver, which has the major amount of electronics in it, I need access to all four sides (all open up as panels) for testing in the initial phases.
As yet the foundry only has lighting wired in, I left the power side until I know where things are going to settle. Then somehow I need to move the 110 KVA generator into the stable over it's wonky floor, level it up and duct it's output across the back of the workshop into the foundry.
The foundry still has too much other junk in it for comfort. Some things such as the big pottery kiln are justifiable for lost wax burn out, but much else has to find another home. Trouble is it has accumulated junk over the years as it wasn't in use.
In there there is still the Hodge Clemco 'outdoors' grit blaster with it's crates of bits, a trolley mounted sheet metal nibbler, two rather nice beechwood foundry benches, two racks of shelves, two sets of oxy-acetylene . . . well you get the idea !
. . . so how long do I have to stay in isolation . . . . . . ?
hermetic:
. . . so how long do I have to stay in isolation . . . . . . ?
Until all your projects have been completed for our entertainment and satisfaction!
Good Luck Andrew, stay Healthy!
Phil
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