This chassis technology achieves a single-piece projected area of 4.2 square meters, with the thinnest section measuring only 4 mm and the thickest reaching 50 mm.
On December 2nd, an “integrated low-pressure die-casting full-aluminum load-bearing chassis frame,” pioneered by Hubei Hangte Equipment Manufacturing Co., Ltd., was officially released. This technology has been first applied to the Yangwang U8L Dingshi Edition, a high-end new energy SUV under BYD.
This chassis technology overcomes the manufacturing limits of ultra-large thin-walled structural components. It achieves a single-piece projected area of 4.2 square meters, with the thinnest section being only 4 mm and the thickest reaching 50 mm, resulting in a thickness variation ratio exceeding 12:1. This set of data signifies a major breakthrough for China in the field of core lightweight automotive structural components.
According to official reports, traditional full-aluminum chassis frames are typically assembled from dozens of components through methods like welding and riveting. This not only involves complex processes and high costs but also makes the connection points weak links in terms of structural rigidity and safety.
In contrast, the integrated casting technology simplifies the traditionally complex assembly structure into a single, integrally cast piece. This reduces connection points by over 90% and compresses welding processes by more than 95%, significantly enhancing the vehicle body’s overall rigidity, torsional stiffness, and safety protection capabilities.
The essence of this technology lies in the precise and controllable low-pressure die-casting process. By steadily injecting molten aluminum alloy under low-pressure conditions, it achieves perfect filling and uniform solidification of the metal even in ultra-thin wall sections. The entire process is monitored in real-time by an intelligent control system. Furthermore, the chassis material formulation has been optimized. Through fine-tuning of micro-alloying and heat treatment processes, the finished chassis maintains high strength while also possessing good toughness and fatigue resistance.
Industry experts point out that this breakthrough by Hangte Equipment marks a significant shift for China’s high-end core components in the new energy vehicle sector, moving from technological catch-up to technological leadership.
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