We produce castings weighing up to 3500 kg
The production capacity of our foundry is 7000 tonnes a year
We work with gray cast iron and ductile cast iron
At Zelezarny we make casting from the following material:
- Cast Iron with lamellar graphite
(grey cast iron)
(EN-GJL-200, EN-GJL-250, EN-GJL-300) - Cast Iron with nodular graphite
(spheroidal graphite cast iron)
(EN-GJS-400, EN-GJS-350-22-LT, EN-GJS-500, EN-GJS-600) - Aluminium alloys
(ENAC-AlSi10Mg, ENAC-AlSi8Cu3)
We emphasize on the constant improvement of our tech processes
-
Product development -
Pattern productinon
and moulding -
Casting -
Surface
finishing
-
Painting -
CNC machining -
Transportation
We will help you develop your product
We can modify drawings of weldments or machining drawing to drawings for castings. We propose appropriate modifications of parts to optimize the production. We carry out simulation of the casting´s solidification in the QuikCAST program.
e propose appropriate modifications of parts to optimize the production.
We carry out simulation of the casting´s solidification in the QuikCAST program.
We make castings of cast iron or aluminium alloys
Castings are made in cupola furnaces with the oxygen intensification and dust suction technology.
We also make them in rotary gas furnaces (5t and 3t) with electronically controlled burner, batch control and dust suction technology. A gas melting pot furnace for melting non-ferrous metals (200 kg Al) is available, too. Castings are moulded into self-solidifying furan mixtures with two recycling circuits. We utilize mixers of moulding mixtures with the total capacity in excess of 50t an hour. We work with both suspended and table blasters. Products go through an annealing furnace.
The surface finish is performed with varnishing or dipping.
We dip products in water-soluble paints or varnish them in enclosed boxes, largely with two-component and special paints. The viscosity and the composition of paints are regularly monitored. The thickness of the deposited paint coat is inspected with special gauges.
Castings are machined on CNC machines.
We do both rough and final machining. Castings or weldments are machined on new horizontal boring and milling machines manufactured by the renowned maker TOS Varnsdorf. We can machine items of upto 12t . The dimensional precision is verified by 3D measurement.
We provide transportation of castings to the customer.
What castings do we make?
Most frequently, we manufacture stators of electric motors and generators or gear box housings. Our typical products include parts of pumps, metal-working machine chassis and other products of mechanical engineering.