Zamak die-casting

The creation of die-cast zamak products begins when the foundry starts die-casting items after the tool manufacture. Die-casting is the most common method for machining zinc alloys (zamak) as well as for manufacturing accessories, components and small items.
The alloy is melted and injected in a mould by virtue of the “pressurised foundry” process.
High flowability and the low melting point of zinc alloys can provide for the manufacture of pieces with minimum tolerance limits and extremely complex shapes, which cannot be achieved with other alloys.

Thank to its user-friendliness and low melting temperature (from 380°C for the most common die-casting alloys to about 500°C for high aluminium content alloys), zamak is increasingly preferred to other materials in various production sectors: furnishings, hardware, clothing and components in general.
The metal casting cycle is the quickest for die-casting alloys.

Zamak hot-pressing allows the manufacture of accurate and resistant parts at a low cost, thus assuring constant quality in small and large production series and it is perfectly suitable for surface finishing (polishing, galvanic treatments, etc.).

Effebiesse uses hot-chamber die-casting machines, so called because the pressure chamber is constantly immersed in the cast metal.

In hot-chamber machines, used for small- and large-size zamak casts, the material is cast inside melting pots mounted on the machine.
During the die-casting process, the material is melted and injected under pressure into the heat-resistant steel tool. Cavities can be very precise and with detailed finishings.

To melt zamak items according to the drawing, the Effebiesse foundry department has 21 hot-chamber presses between 80 to 500 tons, slaved to anthropomorphic robots or manually with an operator. All machines are managed by a computerised production control system for constant observance of production parameters.