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ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Aluminium Rolling: Plate, Sheet, Coil and Foil
Flat aluminium is made by squeezing a thick cast slab between rolls, many passes, each a little thinner. Product over about 6 mm thick is called plate, thinner sheet; foil is thinner still. The thinnest foil is rolled two layers at a time (pack rolling), which is why kitchen foil has one shiny side, against the roll, and one dull side, against the other layer. The same idea, done cold on a small hand mill, is how a maker rolls brass or copper strip.
Ilọsíwájú
Hours per coil (industrial)
Ìlànà
1
1
Cast slabs
Cast slabs
Aluminium is remelted and cast into thick rectangular slabs.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ìṣù aluminiọ̀mù500 kg2
2
Hot roll
Hot roll
The heated slab is passed back and forth through heavy rolls, thinner each pass, to plate or thick strip.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀ irin3
3
Cold roll to sheet
Cold roll to sheet
The strip is cold-rolled thinner, annealed when it becomes too hard to roll, and wound into coils for stamping presses or cut into sheets.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀ irin
Ààrò ìrọ̀ irin4
4
Pack-roll foil
Pack-roll foil
For the thinnest foil, two layers are rolled together and separated afterwards.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀ irin5
5
Trim and measure
Trim and measure
Edges are slit and the thickness measured: over 6 mm is plate, under is sheet.
Àwọn irinṣẹ́ tí a nílò:
Òṣùwọ̀n Kálípà Díjítà Ìnṣì 6Àwọn ohun-èlò
1- 500 kgÀyè
Àwọn irinṣẹ́ tó nílò
3Ìtọ́nisọ́nà yìí ń ṣe
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