Honda Develops New Technology to Join Steel and Aluminum and Achieves World's First Application

Honda Develops New Technology to Join Steel and Aluminum and Achieves World's
                              First Application

  PR Newswire

  LONDON, February 22, 2013

LONDON, February 22, 2013 /PRNewswire/ --

Honda Motor Co. ,  Ltd. has announced the development of a new technology to
join steel and aluminium and further applied this technology to mass
production vehicles ,  initially to the North American version of the all-new
Acura RLX but plans to expand its application to other models .

The first application of this technology was with a new aluminium outer door
panel, which has conventionally been made of steel, to join it to the steel
inner door panel. To join together the dissimilar metals of steel and
aluminium, the simultaneous establishment of several different technologies
was required including technologies to prevent corrosion (electrical
corrosion) and thermal deformation caused by the different expansion rates of
steel and aluminium. Honda newly developed three technologies that enabled
adoption of aluminium for the outer door panel:

1) Technology to join dissimilar materials: adoption of '3D Lock Seam' (3DLS)
structure, where the steel panel and aluminium panel are layered and hemmed
together twice 2) Technology to prevent electrical corrosion: adoption of
highly anticorrosive steel for the inner panel and a new form that assures the
complete filling of the gap with adhesive agent 3) Technology to control
thermal deformation: adoption of an adhesive agent with low elastic modulus
(better ability to 'stretch') and optimised position of the 3D Lock Seam The
advantages of these new technologies include elimination of a spot welding
process required to join conventional steel door panels. Moreover, these
technologies do not require a dedicated process; as a result, existing
production lines can accommodate these new technologies. In everyday use, the
new technology contributes to the improvement of fuel economy and dynamic
performance of the vehicle by reducing door panel weight by approximately 17%
compared to the conventional all-steel door panel. In addition, weight
reduction at the outer side of the vehicle body concentrates the point of
gravity further toward the centre of the vehicle, contributing to improved
stability in vehicle manoeuvring. Going forward, Honda will continue its
proactive research and development of leading technologies in order to further
enhance the performance and environmental credentials of its products and
manufacturing processes, as well as develop innovations to enable society
practical ways to enjoy the convenience, independence and fun that come from
the freedom of movement.

Contact Honda Press Office Honda (UK) Office: +44-(0)1753-590193
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