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Castings

WE OFFER CUSTOMERS WHAT THEY NEED

The comprehensive project solution from design proposal, selection of suitable material and production technology, to production, inspection and delivery to the destination.

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  • We cooperate with certified local and foreign manufacturers and foundries ensuring high quality and supplier reliability.
  • We provide castings from gray, nodular, special cast iron, aluminium and steel.
  • We focus on castings in weight range starting from 0.5 kg up to 10,000 kg.
  • We choose the appropriate production technology according to the size, shape, accuracy and required amount of castings.
  • We design the appropriate type of pattern equipment with respect to the specified accuracies and the expected production quantity.
  • Added value for the customer are services as surface treatment, machining, assembly, packaging, and transport.

MATERIALS

MATERIAL IS ALPHA AND OMEGA OF EVERY CASTING.

Properly chosen material is a guarantee that the casting will fulfil its function in any situation.

FERROUS CASTINGS

Nodular cast iron

The cast iron with nodular graphite, which is characterized by high tensile strength, hardness and ductility.

DIN EN 1561RM MIN (N/MM2)HBB MAX (BRINELL)
EN-GJL-400-15400200
EN-GJL-4000-180-LT
400140-200
EN-GJL-500-7
500230
EN-GJL-600-3
600270
EN-GJL-700-2
700300


Gray cast iron

The cast iron with flake graphite, which is characterized by relatively high strength and hardness.

DIN EN 1561RM MIN (N/MM2)HBB MAX (BRINELL)
EN-GJL-200200220
EN-GJL-250
250240
EN-GJL-300
300260

Adi cast iron

This is a special bainitic ductile iron, which is characterized by very favourable strength, ductility, dynamic strength, and abrasion resistance. ADI cast iron with its mechanical properties is very similar to cast steel.

DIN EN 1564
RM (N/MM)
EN-GJL-800-10
800
EN-GJL-1400-1
1400

Steel

We offer materials such as steel for refining, heat-resistant steel. Based on the required characteristics of the manufactured part, we choose a suitable type of steel, which differ from each orther in chemical properities. We can provide cast steel castings from 5 kg to 10 000 Kg according to drawings and material specifications.

Lost Foam Castings

We offer Lost Foam Casting as an innovative and cost attractive alternative to the traditional foundry process.

Advantages of using Lost Foam technology:

  • Possibility to produce complex castings from all types of cast iron.
  • Greater flexibility in casting design than traditional wood models
  • Lower costs for prototype, piece and small batch production


Lost Foam technology uses polystyrene models (EPS) that are filled entirely in the casting mould. The liquid metal poured into the mould fills the cavity and also burns the model.

This method is in many cases much more economical compared to the traditional method, which uses wooden models.

OLMETAL is a business partner of KOVOSVIT MAS Foundry, a.s.

Kovosvit zvýšil tržby na 1,75 mld Kč, investoval 200 mil. Kč - Strojírenství - www.prumysldnes.cz

NON FERROUS CASTINGS

We supply castings casted in sand mixtures, as well as in metal moulds, by gravity, low pressure, high pressure and even precision castings on a meltable model.

Aluminium castings

All types of aluminium alloys for a wide range of industrial applications. We supply sand castings, precision castings from wax patterns, from cocci, from low and high pressure technology and castings from squeez technology. We provide units of pieces and also ten thousand piece batches ranging in weight from 0.1kg to 10,000kg. Surface treatments with wet or powder paint, anodization (elox), as well as final machining or pressure testing.

AlloyStateRm -  (MPa)Rp0.2 0.2%  (MPa)Ductility (%)Hadrness (HBW)
AlSi7Mg0,3
EN AC-42100
A356.0
T6290210
490
AlSi7Mg0,6
EN AC-42200
A357.0
T63202403100
AlSi10Mg(a)
EN AC-43000
A359.0
F180902,555

T6260220190
AlSi8Cu3
EN AC-46200
380.0
F170100175
AlSi12(b)
EN AC-44100
B413.0
F17080555
AlSi9Cu1Mg
EN AC-46400
F170
100175

F - as cast

T6 - after annealing and full artificial ageing

Magnesium alloys

We supply this modern material from all commonly used technologies, namely sand casting, precision casting and coquilla. We are also able to provide machining of these alloys, which is more problematic due to the flammability of the filings.

The castings are used wherever the customer appreciates the low weight of this alloy. The most common applications are in automobiles in motorsports, aviation, telescope and camera bodies, optical instruments.

Copper alloys


For high voltage applications, we offer both sand casting and precision and die casting. Subsequent machining is also a matter of course. Classically, these alloys are also used in art for casting sculptures.

ČSN
NAMEDIN
OTHER DESIGNATION
42 3123
CuSn12
1705
TIN BRONZE
42 3148
CuAl10Ni2Mn1

ALUMINIUM BRONZE
42 3322
CuZn31MnAl1
1709-73 GCuZn35All
BRASS
42 3303
CuZn17Si3

BRASS


REQUIREMENTS FOR SPECIAL MATERIALS WE SOLVE AS A PART OF CUSTOMER SERVICE


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