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Removal of glass coat 2
- Thread starter yakov1
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- #3
GregLocock
Automotive
Why wouldn't the HF eat the steel?
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Greg Locock
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Greg Locock
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MikeHalloran
Mechanical
It would, quickly.
Mike Halloran
Pembroke Pines, FL, USA
Mike Halloran
Pembroke Pines, FL, USA
MikeHalloran
Mechanical
Bend the shaft.
Finish up with a hammer.
Mike Halloran
Pembroke Pines, FL, USA
Finish up with a hammer.
Mike Halloran
Pembroke Pines, FL, USA
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- #8
What is the 'glass coat'? The exact meaning may have been lost in translation. It could be mill scale (which is fused ceramic - ie glass)if the shaft has come straight from the mill.
If so, impact with an air powered needle descaler is the normal way to clean it up.
If so, impact with an air powered needle descaler is the normal way to clean it up.
Hard to say what the "glass coat" means.
I went with the conventional sense since glass is typically used over steel as a protective coat from highly corrosive acids. For example, "glass lined" tanks for holding sulfuric acid.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
I went with the conventional sense since glass is typically used over steel as a protective coat from highly corrosive acids. For example, "glass lined" tanks for holding sulfuric acid.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
I wondered about the HF acid and steel as well. My thought was that HF acid will attack glass, but if it attacks steel much faster than glass, then by the time you got ALL the glass off, you'd have eaten pits in the steel where it first penetrated the glass. Wondering if this technique has been tried, or was this just an idea?
Please don't advocate using hydrofluoric acid, whatever the glass really is. This stuff is bad enough in the lab, but on an industrial scale it's evil. This shaft is 14 foot long and weighs over 1/2 a ton. That's some bath, cockroach! You'll have gallons of HF slurping around, with fumes and splashes.
By the time you've found someone foolish enough to do it, and paid lip-service to the health, safety and environmental guys, you could have made 10 new shafts.
Look up what HF does to the human body if you get a drop on the skin. Not nice.
By the time you've found someone foolish enough to do it, and paid lip-service to the health, safety and environmental guys, you could have made 10 new shafts.
Look up what HF does to the human body if you get a drop on the skin. Not nice.
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