Honda’s 2014 Acura model features a new single-piece laser-welded door ring design. Developed by Honda in cooperation with ArcelorMittal and ArcelorMittal Tailored Blanks, the laser-welded design replaced a conventional multi-piece spot-welded version. This significant body structure component is designed to protect passengers while optimizing the weight and cost of the Acura.
The solution uses Usibor® 1500, an aluminum-silicon coated advanced high strength steel (AHSS). Prior to welding the blanks together, the steel undergoes a proprietary laser ablation process. The new door ring is then stamped as one part instead of the four parts which are usually required.
Forming the part requires just one stamping tool and one stamping operation. No post-assembly tasks are required. By reducing the number of parts and operations required, and by reducing the engaged (gross) weight, the overall cost of ownership for the door ring is significantly lowered.
The Honda Acura door-ring received the 2015 PACE Award which recognizes supplier innovation.
Jim Keller, 2014 Acura MDX Chief Engineer