We do zinc die-casting at the beginning of a picturesque village in the middle of Slovakia, at the KNK zamac plant in Ľubietová. In pressure casting technology, the input raw material is ZAMAC zinc alloy melted at a temperature of 420°C into liquid metal, which is pushed under high pressure by means of a piston in a chamber through a nozzle at high speed into the cavity of a closed steel casting mold treated with a separator, where it subsequently solidifies and, after opening it with the help of ejectors, the casting is pushed out from the movable side of the mold. This procedure achieves repeatable high casting quality and strength, often up to the number of millions of castings, and therefore pressure casting is mainly used in the serial production of structural parts.
We specialize in die casting ZAMAK 5 zinc alloys for B2B customers. We produce precise technical parts with an emphasis on repeatable surface quality, dimensional accuracy and stability.
Pressing with a hot chamber is among the most effective methods of producing small and medium-sized zinc components, where high injection pressure ensures the filling of even very fine details of the mold used in the automotive, electrical engineering, construction, furniture industry, as well as in appliances and industrial equipment.
Zinc die-casting brings a number of advantages:
At the same time, zinc castings have approximately 2.5 times higher strength than aluminum castings used in pressure casting.
KNK zamac, the production team, also provides complete processing under one roof – from die-casting, through grinding, satin-finishing, polishing, drilling, threading, grinding and subsequent painting, antistatic powder coating in RAL shades and galvanic surface treatments (copper, brass, chrome, chrome matt, nickel, nickel matt, black nickel and patina on brass or copper) to assembly and packaging.
