Apply first on Voyah Dreamer! The 2000MPa PHS Door Ring creates the highest safety level MPV

Voyah, a domestic new car brand founded by Dong Feng Group, targets the high-end NEV SUV market with unique technology in the power system, chassis design, OTA development, and its pursuit of safety. Voyah announced the pre-sale of the Dreamer on April 7, 2022, aiming at creating an MPV model at the highest safety level with a luxury experience.


The Dreamer MPV, designed for family and business purpose, has used innovative technology from VAMA to set up a new standard for passive safety and lightweight design.



The laser-welded one-piece PHS door ring solution was a unique lightweight solution first designed by ArcelorMittal and applied to the 2014 Honda Acura MDX. It was then applied to many other vehicle models. With the outstanding safety performance verified on numerous models, the solution helped to create five-star safety legends one after another. At the beginning of 2020, VAMA and GONVVAMA team brought up the unique 2000MPa PHS door ring solution in the first meeting with Voyah. The door ring solution has become the only choice ever since, not only because of its former application success but also thanks the most recent combination with Usibor®2000.


The second-generation AS-coated hot stamping steel Usibor®2000, which has realized mass production in China since 2019, can reach a tensile strength up to 2000MPa after hot stamping. It was applied to Voyah Free in 2019 as Voyah’s first model was promoted to the market. The outstanding performance of the Usibor®️2000 door beam has laid a solid foundation for the “safety” label for Voyah, as well as the further cooperation with VAMA.


The magic of the door ring solution is to apply the right materials for the right parts. “Usibor®1500 ensures non-deformation of the door ring in case of a crash while the highly ductile Ductibor®1000, which is applied to the bottom of B pillar, ensures maximum absorption of impact energy during a crash. More importantly, Usibor®2000, which is applied to B pillar reinforcements, ensures minimal intrusion and passenger safety in case of top and side impacts,” Ma Jieli, the head of ArcelorMittal China EVI, explained.


The laser welding technology makes the magic more realistic. Materials of three different strengths and six different thicknesses can be integrated into one piece, replacing the traditional solution of joining four individual parts after separate hot stamping. The weight of the door ring is eventually reduced by 6.67kg compared with the traditional package.



The proportion of high-strength steel in VOYAH Dreamer reaches 70%, of which the hot stamping steel accounts for 23.6%. With the 2000MPa LWB PHS door ring applied, the car body is just like an “intelligent mobile castle,” passed various safety evaluation systems, including the most stringent 2021 C-NACP five-star safety rating, C-IASI Passive safety G-rating, and IIHS G-evaluation standard, as well as CAE simulation analysis and 42 types of crash conditions, created an MPV model of the highest safety level.


In October 2021, VOYAH Dreamer’s BIW made its first showing at China Car Body 2021 and won the special prize. The door ring application was a “great highlight.”


Jurgen Cobbaut, CMO of VAMA, emphasized: “the key is to see customer’s success as our mission. The successful application of this door ring is the result of over 400 days of joint effort with the same goal set by both our whole team and the Voyah team. We worked closely from design concept and formability verification to tool try-out and mass production. It was a significant experience for both of us. And I believe, with the shared commitment to safety and light weighting, there will be more and more NEV cars built with our solutions that can support the transition to green mobility. ”



Yun Tao, Senior Director of VOYAH Body Development, said: “These door ring products will also be made compatible with laser welding fixtures of MPV door rings, to realize door ring installing standardization, which will greatly reduce the development cost of subsequent models.” Many of VOYAH’s subsequent vehicle models will continue to adopt the LWB PHS door ring solution.


With more high-quality products and lightweight solutions, let’s march ahead together towards a safe, comfortable, and green mobility life.