Aluminium casting

When an aluminium product is being cast, aluminium that has been melted in an oven is poured or injected into a metal mould. There are several techniques for doing this and a number of different aluminium alloys can be used. The mould ultimately determines the shape of the aluminium casting.

Casting techniques

Perla AluCast uses three different casting methods:

  • Gravity Die Casting (GDC)
  • Low Pressure Die Casting (LPDC)
  • High Pressure Die Casting (HPDC)

  • In China, we produce aluminium injection casting. Our foundry in India can implement all three casting techniques.

    When assessing your product design or casting mould, our specialists immediately take into account the important casting characteristics that can play a role in the casting process, so that you are assured that your product is being produced in the right way and with the right casting method.

    Alloys

    Perla AluCast casts with different aluminium alloys. Because each casting alloy has specific properties, it is important to choose the right alloy for your specific casting product. What are your requirements regarding the strength, hardness, heat resistance or corrosion resistance of your casting product? The right choice of alloy can save you expensive finishing costs for (the composition of) your end product.

    The chapter on alloys lists the standard alloys that we use. At your request, we can also make a casting with the other alloys listed in the summary table.

    Mould

    The mould is a hollow mould of special steel into which the liquid aluminium is poured and then solidifies. The mould usually consists of two halves that together form the negative of your product. Under pressure, the halves are pressed against each other and the liquid aluminium is poured into the mould opening or injected under pressure.

    If you have a technical product drawing or 3D file, Perla AluCast will develop and produce the mould for you in-house. Because we produce the mould in our own tool shops in India and China, this saves you extra costs and any uncertainty. The turnaround time of the mould production is normally around 6 to 8 weeks but depends on the complexity and size of the product.

    Do you already have a mould?

    If so, we can use it almost straight away to produce castings in our foundries. The mould usually requires only minor adjustments on the outside to make it suitable for our machines. We can arrange this for you without delay.

    And when your existing mould requires internal adjustments, for example because you are not satisfied with the dimensioning of your casting, our experts can also adjust the mould for you. With our special simulation programme, the casting that results from these adjustments can be viewed straight away.

    Finishing

    When a casting product has been released from the mould, that does not mean that the product is now ready to be sent to the customer. To arrive at a perfect end product, a number of finishing and/or surface finishing activities must be carried out. Because Perla AluCast almost always manufactures larger series, our production partners have their own CNC machinery. The great advantage of this is that it guarantees the accuracy and repeatability of the finishing.

    We outsource surface treatment such as coating, nickel-plating, etc. to specialised partners in our network. Immediately after the production of your casting, work can be outsourced locally or in the Netherlands, depending on the complexity of the surface treatment. Perla AluCast has a large and reliable network, so we can always choose the right option together with you.