The company successfully cast the 7-series aluminum alloy flat ingot with super size (2670mm width), which is the largest 7-series flat ingot in China so far.

The first aluminum alloy flat ingot with the width of 2670mm was successfully cast in Asia to solve the technical problem that the large aircraft can only be rolled horizontally.

It successfully cast the aviation flat ingot for the super-large (2520mm width) 7050 aircraft structural parts, which is the largest 7050 flat ingot in the world to date.

The 7A04 commercial aluminum alloy flat ingot of super size (width up to 2520mm) was successfully cast, which is the largest aluminum alloy flat ingot of 7A04 in the world to date.

The large-size 7055 aviation aluminum alloy flat ingot with the greatest difficulty was successfully cast once, breaking the industry record.

The use of high purity degassing and slag removal technology has laid a solid foundation for the successful casting of 7A85 aviation aluminum alloy in October 2016. Through the project, we broke the technical blockade of foreign countries, broke through the world-class ultra-high difficulty aviation aluminum alloy casting technology, product quality reached the international advanced level.

The use of asymmetric shear deformation rolling technology can make the cast tissue deformation more uniform and more sufficient, can greatly reduce the tissue porosity, porosity, trachoma and other genetic defects caused by the adverse harm, so that the final product material anisotropic performance is excellent. This technology is an important guarantee for the production of high quality aerospace aluminum alloy materials.

In view of the problem that the poor hardenability of 2 series and 7 series of plate products with a thickness of more than 80mm affects the thickness of the plate, our company adopts the roller quenching spray process and the auxiliary quenching and cooling process to solve the hardenability of the super-thick 2 series and 7 series of plate products. This technology provides a strong guarantee for the production of high quality aerospace aluminum alloy materials.

Aiming at the problem of orange peel defect after solution quenching of 6 series hot rolled medium and thick plate, our company has successfully solved this technical problem in aluminum processing industry by optimizing chemical composition, unique pass rolling process and other technical means. This technology not only improves the surface quality of 6-series aluminum alloy plates, but also lays a good foundation for the subsequent anodic oxidation of the products.

The residual stress of 2 series, 6 series and 7 series hot rolled quenched plate and prestretched plate under 260mm thickness can be effectively eliminated by using large tensile machine. This technology for the product follow-up deep processing escort.

This technology produces aluminum plates with high brightness and surface roughness up to 0.2 m, which can produce aluminum plates for tank cars, mirror aluminum plates, aluminum plates for COINS and other products. At present, 5083 alloy materials for tank cars have been exported to Thailand, Europe and the United States in large quantities.

Our company can produce the current domestic maximum width (2650mm) sheet strip. The temperature control precision of the furnace is up to ±1.1℃, and the control ability of the downline plate type is up to 5I. This technology can ensure the uniformity of the performance of the annealing/quenching product head, middle and tail (the fluctuation range of the whole coil performance of the coil product is less than 3%), and ensure the uniformity of the shape and surface quality of the aluminum plate. In addition, our company also has surface pickling, alkali washing, passivation, pre-aging, oil coating and oil coating detection technology, providing a strong guarantee for high value-added products in automotive and 3C electronics fields.