Hot Rolling aluminum sheet with various sizes:
1) Alloys: 1xxx, 3003, 3004, 3104, 3105, 5052, 5005, 5083, 5182, 5754, 6061, 6182, 7075
2)Application: decoration, construction, machinery, marine, moulding, truck-making etc
3) With ISO, SGS Certification.
Rolling begins with huge sheet ingots weighing as much as 20 tons that have been preheated to make them easier to shape. As the size of rolling mills has increased, so has the size of these ingots, but a typical ingot is about 1828mm wide, 6096mm long, and more than 610mm thick.
The ingot is first fed into a breakdown mill, where it is rolled back and forth, reversing between the rolls until the thickness has been reduced to just a few inches. At this point, some plate is removed and readied for shipment. The plate is heat-treated and quickly cooled, or quenched, for added strength and then stretched to straighten and relieve internal stress built up during rolling and heat-treating. Finally, the plate is trimmed and aged at the desired temperature to develop its final properties.
Plate that is slated to become sheet or foil is trimmed after leaving the breakdown mill and sent through a continuous mill to reduce thickness further. Sheet thicknesses are then coiled.