The aluminum circle is of wide application, of which the top three applications are cookware, road sign and lamp cover. For meeting different requirements, its surface be further processed, which is divided into common aluminum discs and anodized aluminum circle.
The thermal efficiency of aluminum discs is as high as 93%. The use of aluminum circle for cookware will greatly improve the electrical conductivity, thermal conductivity, and heat resistance of the cookware. The aluminum circle for road signs are usually 1060, 3003 and 5052 aluminum circle. 5052 aluminum circle for traffic sign is more popular in North America.
The common alloys of aluminum circle for kitchenware is 1060 and 3003. According to the processing technology, it can be divided into DC and CC aluminum round sheet. DC aluminum round plate is more suitable for deep drawing with finer grain size. Its price is also relatively high. The processing technology of CC aluminum circle is better than before, which can replace DC aluminum circle in some applications.
For high-end cookware, the anodized aluminum circle is a better choice. It make aluminum cookware has excellent coating ability and strong corrosion resistance tot heat, friction and salt. In addition, hard anodizing can strengthen the surface hardness, which extends the service life of aluminum cookware. 1xxxx and 3xxx DC aluminum circles are suitable for anodizing.
Besides 1060 and 3003 aluminum circle, other common alloys of aluminum circles are 1070, 3004, 3105, 5052, 6061, 8011, etc. The common tempers are O, H12, H14, H22 and H24. The common machine for aluminum circle production is continuous punching production line, featuring high efficiency. For some super large size, we sometimes need circle cutting machine. If we get a higher flatness, we can get laser cutting machine.