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Rotation technology is a suitable technology to produce complex and
unit forms. Since the cost of mould is more reasonable when compared
with injection, vebriage and etc.technologies, it is an exclusive
technology that can be applied in plastic production.
Metal Sheet Rotation Moulds
These moulds are the moulds made by giving shape to HRP metal sheets
of 2,5 – 3mm. thickness. These are especially prefered in production
of big products (such as water depot). Their advantage is the
reasonability of the costs of moulds. However since they are made by
mostly by hand and they are mounted by boiling of the metal sheets,
exact mould measure and perfect surface quality is not obtained. It
is suitable to use steel moulds in pruducts that doesn’t require
perfect surface quality and exact mould measurements.
Aluminium Rotation Moulds
Though
more expensive when compared to steel moulds it is a technique that
provide perfect surface quality and exact mould measurement
tolerance. Aluminium moulds may be made in various shapes.
Making mould by treating Aluminium log on CNC benches provides
perfect surface quality and ± 0.1mm of mould measure accuracy. Wood
and polyester models of the product is avilable and it can be made
with the aluminium casting method and if exact measure is requested
excelsior is removed from the casted surface on the CNC.
Consequently the size and the quality of the surface is the factor
that determine the method with which the mould should be made. |