© OMSG
Opening photo: The mechanical pre-treatment of extruded aluminium profiles significantly reduces the pickling time while creating a pleasant, uniform satin effect.
INNOVATIONS: PRESENT&FUTURE
S P E C I A L ALU MINIU M
Shot Blasting of Extruded Aluminium Profiles: Aesthetic Quality with Time and Cost Savings Enzo Dell’Orto OMSG – Officine Meccaniche San Giorgio Spa, Villa Cortese (MI), Italy
T
management@omsg.it
he most common surface treatment
make it difficult to employ alternative methods.
of precious material that must be recovered
used for finishing extruded aluminium
On the other hand, the use of caustic
with further processes.
profiles has always been chemical
soda-based chemicals entails a large number of
In a global context where the demand for
pickling in a basic bath. The profiles’ complex
disadvantages due to the need to handle toxic
aluminium products is constantly growing, all
shapes, their sensitivity, and the aesthetic
solutions and properly dispose of their related
of this calls for a change of paradigm in order
perfection required raise several issues that
waste water, as well as to the significant erosion
to increase productivity and reduce costs, of
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N. 53 - SEPTEMBER/OCTOBER 2018 - international PAINT&COATING magazine