Filtration System November 04, 2014 06:12AM |
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Re: Filtration System November 04, 2014 02:44PM |
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Re: Filtration System November 04, 2014 04:34PM |
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Re: Filtration System November 04, 2014 04:37PM |
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Quote
FouthDimensions
Do the fumes and by products from PLA and ABS pose health hazard? (Yes or No)
Re: Filtration System November 05, 2014 12:50PM |
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Re: Filtration System November 05, 2014 12:53PM |
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Re: Filtration System November 05, 2014 07:20PM |
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Re: Filtration System November 06, 2014 06:37AM |
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Re: Filtration System November 07, 2014 01:34PM |
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Re: Filtration System November 07, 2014 01:36PM |
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Re: Filtration System November 09, 2014 10:09AM |
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Re: Filtration System November 10, 2014 04:57PM |
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Re: Filtration System November 12, 2014 04:27PM |
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Re: Filtration System November 12, 2014 04:29PM |
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Re: Filtration System November 12, 2014 06:20PM |
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Re: Filtration System November 18, 2014 12:23AM |
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Re: Filtration System November 18, 2014 09:57AM |
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Re: Filtration System November 18, 2014 11:51PM |
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Re: Filtration System November 22, 2014 11:16AM |
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Quote
Alexander1984
Imagine - 3mm filament squeezing out of a 0.5mm nozzle (which is rather big these days) produces around 150bars of pressure inside the nozzle!
going down to 0.35 will up this only more
Re: Filtration System November 24, 2014 08:59PM |
Registered: 11 years ago Posts: 210 |
Quote
3ntrlab
Quote
Alexander1984
Imagine - 3mm filament squeezing out of a 0.5mm nozzle (which is rather big these days) produces around 150bars of pressure inside the nozzle!
going down to 0.35 will up this only more
While I agree more or less with the concern of having a 3d printer near children... can you please tell me how you can prove that the pressure inside nozzle is 150 Bars (= 150 Kg/sq.cm ).
Re: Filtration System November 25, 2014 02:17AM |
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Re: Filtration System November 25, 2014 03:05AM |
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Re: Filtration System November 25, 2014 08:07AM |
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Quote
greenman100
Typical 1.75mm extruders push with 10-20N of force. That is distributed over 2.4sqmm, or 0.024sqcm.
15/.024 = 62.5 bar.
Of course 15N is just a general average based on Airtripper's measurements, so 150 bar is not out of the question.
Re: Filtration System November 25, 2014 10:47AM |
Registered: 11 years ago Posts: 210 |
Quote
3ntrlab
Quote
greenman100
Typical 1.75mm extruders push with 10-20N of force. That is distributed over 2.4sqmm, or 0.024sqcm.
15/.024 = 62.5 bar.
Of course 15N is just a general average based on Airtripper's measurements, so 150 bar is not out of the question.
Pressure is applied all around in the melting chamber, not only as a frontal section....average 3mm nozzles are about 120-150 sq.mm. (ten times more....).
Brgds,
Davide Ardizzoia
Re: Filtration System November 25, 2014 11:43AM |
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Re: Filtration System November 25, 2014 01:39PM |
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Re: Filtration System November 25, 2014 03:20PM |
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Re: Filtration System November 25, 2014 04:42PM |
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Re: Filtration System November 25, 2014 05:46PM |
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Note that ULPA filters do not filter gasses, so the carbon pre-filter will be wanted for that.Quote
The next filtration mechanism, diffusion, is effective for very small particles typically less than 0.5 μm in size. Effectiveness increases with lower flow velocities. Small particles interact with nearby particles and gas molecules. Especially in turbulent flow, the path of small particles fluctuates randomly about the main stream flow. As these particles diffuse in the flow stream, they collide with the fiber and are captured. The smaller a particle and the lower the flow rate through the filter media leads to a higher probability that the particle will be captured.
Re: Filtration System November 25, 2014 06:06PM |
Registered: 10 years ago Posts: 581 |