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  • Users: 123Dog
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  1. 123Dog

    Demolishing large cast iron.

    On similar machine we drilled holes close together in conjunction with the slitting action of an 8inch cutoff wheel , on an angle grinder, and broke it,with a sledge Good Luck Hey RD I had one too the 400
  2. 123Dog

    Demagnetizing complex SS parts

    In some lab equipment 304 and 316 SS parts become magnetized just because of use Now,, its out of the question to heat these parts for reasons of distortion Is there any other way to demagnetize this lab equipment other than using heat Thanks
  3. 123Dog

    Hot Isostatic press

    Thanks Rd400,, we have a slightly better picture of whats needed Very high Vac in large area is difficult
  4. 123Dog

    F1 clutch

    An impressive little piece Anyone know any details I heard they are about 7inch dia and transmit 900 HP ceramic on steel my guess Any clue on spring pressure ???? Thanks They only work once at the start so I guess thats why they are small I heard the pistons were 62% berylium aly WOW
  5. 123Dog

    Demagnetizing 316SS

    When demaging SS (800C),,,, does the cooling rate matter As you fine gentlemen know,, 2mm cools quicker than 30mm in air Thanks
  6. 123Dog

    Hot Isostatic press

    Can I get a ballpark meaning of this process Its just heat and squeeze of the molten metal as it sets assuring hopefully zero porosity in castings ????????? Thanks Am looking for a casting to hold a very high vacuum
  7. 123Dog

    Very High Vacuum

    Would it be OK to get a test piece of this cast Matl say 150mm dia and test it vacuum wise, to 10 to the minus 9 Would this accurately represent a 400mm square chamber ????????? Thanks
  8. 123Dog

    Gears in gas powered core drill

    Thanks for your valuable time Will look at failed teeth under microscope
  9. 123Dog

    Gears in gas powered core drill

    Were busting teeth in service Tested them at 60 Rc,,, so I tempered them at 450C back to 48Rc Boss flew off handle,,, said they are too soft now Please advise My estimate is that 48 is not too soft Gear mat,l unknown
  10. 123Dog

    Shim in a Can

    Thanks Will look into annealed Shim Stock And anneal parts I have now
  11. 123Dog

    Shim in a Can

    When wirecutting parts from 8 thou SS Shim in a Can I find they are slightly magnetic Is there any heatreatment I can use to demag them Im thinking just a straight anneal will do it Clamped between metal to stop distortion Thanks A colleage said a Demagnetizer wont do it on SS ????????
  12. 123Dog

    Very High Vacuum

    Thanks Its a curly one I will try and find more about the casting process, and get back
  13. 123Dog

    Very High Vacuum

    Chamber approx 400mm square, 316 SS, Wall thickness Approx 30mm I need a very high 10 to the minus 9 torr vacuum Somebody has said they can cast it with zero, porosity!!!!! Is that possible without casting it in a vacuum ? You have to avoid welds with a vacuum this high too What would be...
  14. 123Dog

    Welds in Vacuum systems, and their problems

    In mass spectrometers under Vacuum you try to build in the minimum amount of welds, you try and make parts (from solid Stainless that is ) One prob is you may have a tiny leak thru a weld, another is you may have welding gas, from the weld, escaping into the vacuum My question Can you...
  15. 123Dog

    replacing steel with titanium

    Thanks Ed Stainless Your post cleared up my prob Ti spindle was being used on a RC heli and was getting seemingly big deflection prob Thanks
  16. 123Dog

    UTS of Titanium Bolts

    These people that change out cap screws for Titanium bolts From memory, you only get the weight saving ,,,,,,you dont approach the UTS or the fatigue resistance of a Socket Head cap screw do you ? Which from memory can be 190,000 PSI Thanks
  17. 123Dog

    Correct flexible hose for lubricating oil

    My lathe has a flexible hose as a lubricator I was wondering what the correct hose mat'l might be Neoprene ? Polyurethane ? Thanks for any help
  18. 123Dog

    Large Tungsten Carbide Grinding

    300mm long bore by 120mm dia Weight 750 Kg Can you advise of reliable grinder ? Company Tolerances in the order of 20 microns Thanks
  19. 123Dog

    Stress Relief of smallish 316 parts

    Thanks EdStainless Much appreciated for your brain work I will count on you when I get an important one
  20. 123Dog

    Bonding brake matl to steel backing plate

    Ive often wondered what glue they use to bond the friction matl onto your steel backing plate on your disk brakes I realise there is a mechanical component in the fixing ,, as the backing plate has holes in it, but there must be an adhesive I manufacture small clutches but they dont see the...

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