Recent content by 123Dog

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

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

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

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

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

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

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

Thanks for your valuable time Will look at failed teeth under microscope

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

Thanks Will look into annealed Shim Stock And anneal parts I have now

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 ????????

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

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...

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...

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