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Die casting foundry

The die casting foundry specialises in production of aluminium alloy castings produced to the requirements of customers into metal moulds. The casting into moulds can be done by gravitational method or low-pressure method with the possibility of utilising sand cores.

Construction

Our construction department designs casting products and casting equipment in a state-of-the-art 3D programme SolidWorks. We offer cooperation with the customer in the stage of design, streamlining and optimisation of the final solution including the proposal of ideal aluminium alloy - a beneficial service to our customers. When designing the casting equipment, we use computer simulation of the casting process and of the solidification of the molten material. We can also provide a proposal of solution of transition to aluminium alloy from a different material (such as wrought material, iron etc.).

Casting

Casting products weighing up to 20 kg are cast by utilising the gravitational method on the CGU and CGH machines. Casting products weighing up to 5 kg are cast in individual stands with hydraulic control of mould opening. Low-pressure machines CNS are used for casting complex products. The casting process includes thermal and spectrum analysis which monitors the parameters of the molten material and the temperature of the casting equipment and the molten material. We produce for a wide range of industries such as electrical engineering, machinery, food industry, ship-building industry and traffic systems.

Weight range:

  1. Products cast by utilising the gravitational technology into metal moulds - approx. product weights from 0.1 kg to 20 kg.
  2. Products cast by utilising the low-pressure technology into metal moulds - approx. product weights from 1 kg to 50 kg.

The annual capacity of the die casting foundry is approx 1500 t of castings/year.

For the above specified technologies, we provide production of cores by blast-shooting CT method with binders based on geopolymers or water glass.

Finishing operations

  1. Trimming and grinding of gatings and risers.
  2. Blasting with chrome steel stainless granulate and corundum mixture.
  3. Pressurizing of castings up to max. pressure of 6 bar.
  4. Heat treatment T4, T6.
  5. Assemblies according to customer specifications.
  6. In cooperation, we offer the following surface treatment based on customer specifications - protection against corrosion, powdered surface finish, anodizing etc.

Features


Suitable for larger series

Allows thin walls

Strict tolerance of dimensions

Smooth surface of castings


Machining Shop

Do you need machined casting? We have everything we need for turning, milling and drilling of all assortment of products. Have a look!

More about machining shop

Material

Our die casting aluminium foundry offers the following aluminium alloys:

Alloy

Solution

Rm - tensile strength
(MPa)

Rp0.2 0.2% proof strength
(MPa)

A - Min. elongation at fracture
(%)

Brinell hardness
(HBW)

AlSi7Mg0,3






EN AC-42100

A356.0

KT6

290

210

4

90

3.2371

AC4CH








AlSi10Mg(a)






EN AC-43000

A03590

KF

180

90

2,5

55

3.2381

AC4A

KT6

260

220

1

90








AlSi12(b)






EN AC-44100

B413.0

KF

170

80

5

55


AC3A








AlSi9Cu1Mg






EN AC-46400


KF

170

100

1

75










AlSi12(Cu)






EN AC-47000


KF

170

90

2

55

3.2583
















T6

Solution heat treated and then artificially aged



F

Fabricated (as cast)



We can also offer processing of other aluminium alloys.

Melting is carried out in gas crucible furnaces. The treatment of molten aluminium is routinely done by means of FDU degassing units. The quality of the molten material is evaluated by means of spectrum analysis and by devices measuring the level of molten material gasification.

Feel free to contact our sales department with any questions concerning casting technologies

Adam Rokos
e-mail: arokos@unitherm.cz
mobile: (+420) 777 792 211
phone: (+420) 488 388 112

Lenka Bienová
e-mail: bienova@unitherm.cz
mobile: (+420) 777 792 203
phone: (+420) 488 388 113