Present – steel-based

• It is light because ultra high strength steel is applied.
• BIW lightweight
• Increased use of ultra high strength steel
• Applied new process, simplified structure and optimized structure

Mid-to-long term – multi-material lightweighting

• Pre-development of auto body/chassis using mixed materials like steel/aluminum/composite materials

Patch Work

• Patch-work production technology
• This production technology is to form multiple blanks simultaneously in one tooling after placing and tack-welding each individual blank on the main blank accurately.

Hot blow forming (HBF)

• Hot blow forming production technology
• This hot forming technology is to obtain a desired shape by exerting high pressure inert gas to the inside of a pipe momentarily after inserting a pipe of high temperature into a tooling.

Friction stir welding technology (FSW)

• Hot blow forming production technology
• This technology is to bold two materials at a temperature lower than the melting point by using the frictional heat generated in the base metal after rotating the non-consumable tool of a special shape and inserting it in the base metal.

Plated steel sheet welding technology

• Zinc plated steel based hybrid heating source welding technique
• This blow hole-free welding technique is to prevent blow hole, which may be generated by zinc vapor when welding zinc plated steel sheet that is the main material of auto body parts.