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PERANGKAT PAKAI
Continuous Glass Fibre Strand Drawn from a Platinum Bushing
Glass fibre for cloth is not spun like wool: hundreds of fine filaments are pulled at once from small nozzles in a hot platinum box and wound up as one strand. This is the method of Slayter and Thomas's Owens-Corning patent (US 2,234,986, 1941): an electrically heated platinum-rhodium thimble melts glass cullet, a blower freezes each filament just below its nozzle, a size is put on, and a drum pulls and winds the strand. The faster the drum, the finer the fibre.
The picture: a glass fibre roving (NoiseD, Wikimedia Commons, CC BY-SA 3.0).
Lanjutan
1 day
Instruksi
1
1
Charge the bushing with cullet
Charge the bushing with cullet
Fill the platinum-rhodium thimble (90 % platinum, 10 % rhodium) with broken soda-lime glass. Its floor has rows of staggered nipples .02–.08 in (0.5–2 mm) wide; .04 in (1 mm) is best.
Material untuk langkah ini:
Beling kaca soda-kapur1 as requiredAlat yang dibutuhkan:
Kotak Pemintal Platina-Rodium
Sarung Tangan Tahan Panas
Kacamata pengaman2
2
Melt it with an electric current
Melt it with an electric current
Pass an adjustable current through the thimble to melt the glass. Ordinary lime glass is pulled from about 2,100–2,500 °F (about 1,150–1,370 °C).
Alat yang dibutuhkan:
Kotak Pemintal Platina-Rodium
Trafo Penurun Tegangan
PirometerSarung Tangan Tahan Panas3
3
Start the cooling blower
Start the cooling blower
Blow cool air across the nipple tips from a blower a short distance below them. Each filament sets within a small fraction of an inch of its nipple.
Alat yang dibutuhkan:
Peniup udara4
4
Gather the filaments through a sized guide
Gather the filaments through a sized guide
Draw all the filaments together through one guide eye kept wet with size. Here the size is wax, kept molten with a burner; the patent also names oil, starch, gum and resin. An air jet dries off the excess size.
Material untuk langkah ini:
Lilin parafin1 as requiredAlat yang dibutuhkan:
Pembakar BunsenPeniup udara5
5
Pull and wind on a drum
Pull and wind on a drum
Wind the strand on a fast drum that moves back and forth so it lays evenly. Draw at a few hundred to a few thousand feet per minute: the faster you draw, the finer the fibre.
Alat yang dibutuhkan:
Drum penggulungBahan
2- 1 as requiredPlaceholder
- 1 as requiredPlaceholder
Alat yang Diperlukan
8- Placeholder
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- Placeholder
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