UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Natural Rubber Tubing, Bands and Sheet: Sulfur-Cured with Heat
Raw rubber goes soft and sticky when warm; mixed with sulfur and heated it cures firm and elastic (Goodyear, 1839; Hancock's patent, 1843). Mill smoked sheet with sulfur, then either press it flat and cure it as sheet, or extrude it as a tube, cure the tube on a mandrel, and slice it across into rubber bands.
The picture: our diagram of the three products.
Osezingeni eliphezulu
A day
Imiyalelo
1
1
Mill in the sulfur
Mill in the sulfur
Pass the smoked rubber sheet through the two-roll mill until it is soft and even, then mill in the sulfur a little at a time.
Izinto zokwakha zalesi sinyathelo:
Ishidi lerabha elibhenyiwe1 kg
Impuphu yesibabule30 gAmathuluzi adingekayo:
Umshini wenjoloba onama-roller amabili
Isikali Sedijithali Sasekhishini
Amagilavu okushisela2
2
Sheet: press and cure
Sheet: press and cure
For sheet, lay the compound in the mould and cure it in the heated press until a test piece springs back firm, not sticky.
Amathuluzi adingekayo:
Umshini wokucindezela oshisayo
Imfoloma yokucindezelaAmagilavu okushisela3
3
Tube: extrude
Tube: extrude
For tubing, feed the compound through the extruder with a tube die to make a long tube.
Amathuluzi adingekayo:
I-extruder yepulasitiki
Isikhunta se-extrusion
I-Caliper Yedijithali Yamayintshi Ayi-64
4
Cure on mandrels
Cure on mandrels
Slide lengths of tube onto rods and cure them in the oven with heat until firm and elastic.
Amathuluzi adingekayo:
Induku yensimbi eyindilinga
Isithando sokuthambisa insimbiAmagilavu okushisela5
5
Slice bands
Slice bands
Keep some tube as tubing. For rubber bands, slice cured tube across into narrow rings.
Amathuluzi adingekayo:
Ummese Womsebenzi WezandlaI-Caliper Yedijithali Yamayintshi Ayi-6Izinto
2- Isibambeli
- Isibambeli
Amathuluzi Adingekayo
11- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
Le blueprint yenza
Ama-blueprint ahlobene
Lama-blueprint abelana ngolwazi — amasu, izinto noma izimiso
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