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Topic: About glass blowing.  (Read 3125 times)

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Offline o0CY0o

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About glass blowing.
« on: December 11, 2009, 08:22:35 AM »
Glass blowing has been a technology used for modelling the shape of the glass.
I know that it is due to the disorderness of the viscoelastic property. i.e., it is supercooling liquid in room condition.

Could anyone tell me why aluminium foil cannot do the glass blowing technology?
I think it is related to the organized packing strucuture of Al in it crystal strucutre.
Also, if you find any of my statement incorrect, please do correct it for me. ;)

Offline JGK

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Re: About glass blowing.
« Reply #1 on: December 11, 2009, 11:07:26 AM »
It's amazing what you can find in 2 minutes on the web.

Since most glassblowing is done at 1600–1900°F (870–1040°C) and the melting poit of aluminium is 1220.58 °F (660.32 °C) the shape mold would melt before the glass was workable.
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Offline o0CY0o

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Re: About glass blowing.
« Reply #2 on: December 11, 2009, 11:18:08 AM »
It's amazing what you can find in 2 minutes on the web.

Since most glassblowing is done at 1600–1900°F (870–1040°C) and the melting poit of aluminium is 1220.58 °F (660.32 °C) the shape mold would melt before the glass was workable.
Omg. sorry , but i've been searching too.
Could you please give me the link?
Also.. is there anything related to it's strucutre?

Offline o0CY0o

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Re: About glass blowing.
« Reply #3 on: December 13, 2009, 06:19:08 AM »
Also..
JGK you're wrong too.
I'm asking why glass can use this technology while aluminum cannot.
NOT why can't we use aluminium as the mould...;)

Offline Borek

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Re: About glass blowing.
« Reply #4 on: December 13, 2009, 06:29:52 AM »
Isn't the real reason behind a viscosity of the substance? Or more precisely, some combination of viscosity and surface tension?
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Offline o0CY0o

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Re: About glass blowing.
« Reply #5 on: December 13, 2009, 09:18:03 AM »
Isn't the real reason behind a viscosity of the substance? Or more precisely, some combination of viscosity and surface tension?

Yes yes yes! i've been searching on it for days. It is related to the surface energy and viscoelasticity of glass.
But i lack knowledge in this aspect.
Could you please elaborate????

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