A ceramic coating on the muffle tube ID might help; it has been used in other applications to reduce galling of stainless.
RAYBAND
Rock Island Arsenal
AMSTA-RIA-SEM
BrianBT,
How about simple hydrogen embrittlement? Galvanized, high tensile, steel wire rope in sea water!! I don't know about in storage, especially if properly lubricated, but hey!, you got a natural battery (Zn + FE) just looking for hydrogen to suck up. If so, a simple bake-out should...
Cbert, First, your question would probably be more appropriate for the "Stainless Steel for Engineers" group. Next, you give way too little information for anyone to respond in other than a very generic (or sarcastic) way. For starters, what marine environment; fresh water, salt water...
I'm looking for heat treat temps and property data to see if these tool steels can withstand a 900 deg. F coating treatment without destroying their RC 65-67 hardness. Where or from whom can I find property data?
rayband
RAYBAND
Rock Island Arsenal
AMSTA-RIA-SEM
Once upon a time I had a copy of a modified DeLong diagram (chrome equivalent vs nickel equivalent) that mapped the PH grades of stainlesses. I have lost the copy and cannot remember or find the reference. Can anyone help here?
RAYBAND
Rock Island Arsenal
AMSTA-RIA-SEM
Thanks safetydan. We are aware of NFPA 51B but I have not seen nor can I find OSHA 1910.256, as my online resources don't seem to include OSHA specs. I'll keep looking, but if you have a link it would be appreciated.
RAYBAND
Rock Island Arsenal
AMSTA-RIA-SEM
Am looking for some kind of industry or military spec that defines the safety requirements for a metal grinding operation in a mixed (non-industrial) use space or environment. Removal of flamables is obvious but, for example, how far away must those flamables be when using a 4" grinding disk or...
Well, we are now back to the 'little device' or the power supply, as I found an old, unused variable DC power supply that still worked in the back of the corrosion lab. I could only get about 10.5 VDC out of it but when connected it drew about 1.5 A. and the element put out heat. So the...
Yes, a shorted element is common, but an open element is what puzzled me and why I posted it here. Per skogsgurra's post, I rechecked and it does read about 5.6 ohms and, as stated, the power supply of ~36 V checks OK. But nothing happens when they are connected. The element seems to be like...
Thanks to all. The plate/element is removed from the unit, which is a Genisys 3D Printer used in foundry modelling, is removed from the unit, so is not connected to ground. The Omega 882 Digital Multimeter I use has a lowest scale of 2 k-ohms and reads .0005-6 when the leads are directly...
I have a 36 VDC heated stage that is dead. The input power checks OK, but the heating element itself shows dead short, 0 ohms resistance. An open circuit I could understand, but not a dead short. The leads & connections look OK, no obvious damage. What's going on here?
RAYBAND
Rock Island...
Perhaps this subject needs a bit more detail, as I am sure others have faced similar situations.
Our local regs state only that "--- any equipment that produces a fire, flame, or spark at a temperature higher than 228 degrees F ---", then continues with items that are either general and...
Am looking for some kind of industry or military spec that defines the safety requirements for a metal grinding operation in a mixed (non-industrial) space or environment. Like, removal of flamables is obvious, but how far away must those flamables be when using a 4" grinding disk or wheel at...
Thanks TVP. I am aware of those specs and the equations in E 140, but many people including those who write the software for all microhardness hardware and many others have already done that. I am just lazy; I hate to have to spend time doing (redoing, really) what so many others have already...
