Why SMC/BMC in automotive
Buyers expect more frequent model changes, customizations, more choice and
more extras. To meet these demands, automotive OEM’s need materials that offer
flexibility, design freedom, integration of functions and low weight.
Materials like SMC/BMC.
SMC/BMC (Sheet /Bulk Molding Compounds) brings many advantages to truck,
agricultural and passenger cars OEMs in part consolidation, corrosion
resistance, reduced density and lower capital investment for smaller series
runs. High heat stability makes SMC vehicle body parts suitable for on-line
painting and its excellent class A surface finish a material of choice for
exterior panels such as fenders, tailgates, decklids and spoilers.
Low weight and design freedom
SMC composite parts will
typically be some 20-30% lighter than equivalent steel parts resulting in
substantial fuel savings and improved performance efficiencies over the life
of the vehicle. Opportunities for further weight savings are being
investigated by DSM Composite Resins. Tooling costs for SMC molding are
substantially lower than for metal forming which facilitates more frequent
model updates, styling differentiations and product offerings. SMC holds no
limits for the designer and opens a host of styling possibilities and
economical solutions.
Heat Resistance
SMC composites have high levels of thermal
stability, which means that, once moulded parts will maintain their
dimensional accuracy across temperatures ringing form – 50 C to 200 C. This is
why SMC and BMC have long been used for sunroof frames, headlamp reflector
shells and engine bay components. Heat resistance is also important for the
painting of body panels. Panels are fixid alongside metal parts and painted
on-line using normal stoving temperatures. DSM Composite Resins is a
recognized leader in the development of the Class A, low profile resin systems
that have helped exploit new opportunities for SMC in exterior body panels.