Aluminium pressure
die castings
In this technique,
the mould is generally not destroyed at each cast but is permanent,
being made of a metal such as cast iron or steel. There are a number
of die casting processes. High pressure aluminium pressure die
castings is the most widely used, representing about 50% of all light
aluminium pressure die castings production. Low pressure die casting
currently accounts for about 20% of production and its use is
increasing. Gravity die casting accounts for the rest, with the
exception of a small but growing contribution from the recently
introduced vacuum die casting and squeeze casting process.
In telecoms and computing, aluminium is used in a broad range of
networking and infrastructure equipment, most importantly RF filter
boxes and housings requiring heat dissipation. It provides EMI
shielding, rigidity and durability with minimal weight for shields and
housings for handheld devices. Its excellent electrical performance
and shielding properties, especially in high temperature environments,
are ideal for electronic connectors. Aluminium pressure
die castings
improve automotive fuel economy by contributing to weight saving
requirements. Our strength is in electronic applications, such as
shields for telematic equipment and sensor housings, and safety
critical occupant restraint systems such as airbag housings and
spools.
Aluminium pressure die castings is a fast, cost-effective
manufacturing process for production of high volume, net-shaped, tight
tolerance metal components. It has the benefit of increased quality
and repeatability, often at lower costs compared to other processes.
The aluminium pressure die castings process is the injection under
high pressure into a steel mould (or tool) of a molten metal alloy,
which solidifies rapidly (from milliseconds to a few seconds) to form
a net shaped component and is then automatically extracted. The aluminium pressure die castings tool will typically produce any number
of components from hundreds of thousands to millions, before requiring
replacement.
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