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How the
aluminum plate/sheet/foil is produced? The production process of <strong>
aluminum plate</strong> to
aluminum sheet and
aluminum foil.<br>
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Rolling begins with preheated
aluminum sheet ingots that can weigh more than 20 tons. As the size of rolling mills has increased, so has the size of these ingots, but a typical ingot is approximately 6 feet wide, 20 feet long and more than 2 feet thick. The ingot is first heated to rolling temperature and fed into a breakdown mill, where it is rolled back and forth until the thickness has been reduced to just a few inches. The slab can be subsequently cold rolled or may be heat-treated to increase its strength. The highest strength alloys are heat treated and rapidly cooled to room temperature, after which they are stretched to straighten and relieve internal stress built up during rolling and heat-treating. They are aged naturally at room temperature or artificially aged in a furnace to develop the desired combination of strength and corrosion resistance. Finally, the
aluminum plate is trimmed to final size. Aluminum plates produced in this manner may be used at full thickness, but are often machined into a variety of simple to complex shapes.</div>
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From
aluminum plate to
aluminum sheet and
aluminum foil</div>
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The production of <strong>
aluminium alloy sheet </strong>or
aluminum foil usually starts out the same way as
aluminum plate but the slab is further rolled through a continuous mill to reduce thickness and wound into a
aluminum coil and roll at the end of the line. These
aluminum coils are subsequently cold rolled, from one to several passes at cold rolling mills. Coils may be heated in a furnace to soften it for further cold rolling or produce the desired mechanical properties. Cold rolling is the last step for some
aluminum sheet, but other types (referred to as heat-treatable) are subjected to further elevated-temperature processing to increase their strength.</div>
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Some
aluminum sheet and <strong>
aluminum foil</strong> products may also be produced using the continuous casting process in which molten metal enters the caster, which produces a hot rolled
aluminum coil, thus bypassing the ingot casting and hot rolling steps.</div>
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