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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.
高级
Hours per coil (industrial)
说明
1
1
Cast slabs
Cast slabs
Aluminium is remelted and cast into thick rectangular slabs.
此步骤所需材料：
铝锭500 公斤2
2
Hot roll
Hot roll
The heated slab is passed back and forth through heavy rolls, thinner each pass, to plate or thick strip.
所需工具：
轧机3
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.
所需工具：
轧机
退火炉4
4
Pack-roll foil
Pack-roll foil
For the thinnest foil, two layers are rolled together and separated afterwards.
所需工具：
轧机5
5
Trim and measure
Trim and measure
Edges are slit and the thickness measured: over 6 mm is plate, under is sheet.
所需工具：
6 英寸数显卡尺
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