On December 4, according to Hubei Daily, the one-piece low-pressure cast all-aluminum load-bearing large frame pioneered by Hubei Hangte Equipment Manufacturing Co., Ltd. was officially released recently. This achievement is expected to rewrite the technical rules of the industry. This frame technology has successfully overcome the technological limits of ultra-large thin-walled structural parts, and for the first time achieved the manufacturing of a one-piece all-aluminum frame with a projected area of 4.2 square meters and a wall thickness span from 4 mm to 50 mm.
It is reported that traditional all-aluminum frames are usually assembled from dozens of parts through welding, riveting, etc. The process is complex and costly, and the joints often become weak links in structural rigidity and safety.
The one-piece cast aluminum alloy frame simplifies the traditional frame structure that requires dozens of components to be assembled into a single integral casting, reducing connection weak points and improving the stability and safety of the overall structure. At present, this technology has been first used in BYD's high-end models, the U8L Dingshi Edition.
It is understood that the advantages brought by integrated die-casting are: weight reduction, cost reduction and improvement of production efficiency. Therefore, it has become a technology that current new energy vehicle companies are rushing to adopt.
Among them, the Tesla Model Y front cabin + rear floor adopt integrated die-casting technology, reducing the number of parts from 171 to 2 and reducing the number of solder joints by more than 1,600. In addition, the rear floor of Xiaomi SU7 also uses a large die-casting process, reducing 72 parts to 1 and reducing the number of solder joints by 840.