• During die casting process, alloy is injected at high speed and high pressure into a cold chamber tool
• In die casting process it is possible to produce large quantities of thin walled castings and castings of different complicated forms.
• Castings are characterized by very smooth and clean surface so only in exceptional cases machining is required.
• In die casting in there are two major procedures. Warm chamber casting
and cold chamber casting. With warm chamber casting, a casting chamber
is located in the melted metal. This procedure is appropriate for metals not working aggressively to
material of which the piston is made and of which the chamber is made,
such as magnesium and zinc. For materials such as aluminum and copper,
which corrosively act on piston and casting chamber, more appropriate is
procedure with cold casting chamber where the chamber is located outside
of melted metal.
• In our production we use four standard alloys:
– EN AB 46000 - Al Si9 Cu3 (Fe) - DIN 226
– EN AB 47100 - Al Si12 Cu1 (Fe) - DIN 231
– EN AB 44300 - Al Si12 (Fe) - DIN 230
– EN AB 43400 - Al Si10 Mg - DIN 239
To ensure use of proper material we use a spectroscopic analysis of the incoming material and we also perform continuous checks during the production process.
For the first step of processing casted parts we also have seven trimming
machines: 3 x Gantar (65 t, 50 t i 30 t), one Reis (30 t), one machine which
we made ourselves (50 t) and one machine from Croatian company Hi – Kon (50 t)