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Slide 38 of 69

Notes:

    Production of Hot Stampings
    Pre heated brass billets are placed between two metal dies whose internal cavity is the component shape required. The die is powered down,forcing the the billet to flow and fill the cavity when the two die halves meet. Die tooling configurations are discussed below.
    Open Die Stamping
    The least complex die arrangement whereby when the die halves are forced together, metal flow is initiated before the die halves meet, and completed once the die halves are in face to face contact or a pre-set register position.
    Closed Die Stamping
    In this configuration the two die halves initially close face to face face around the hot billet and are then forced down onto a third die part or core pin which causes the metal to fill the cavity.
    Hot Brass Stampings, have high strength, are free from porosity, are near-net-shape, give close consistent component tolerances, have a superior surface finish and give optimum metal usage.
    NB Stamping dies have considerably longer life than die casting dies due to the lower temperatures involved. Generally stamping dies will produce up to 50,000 components compared with a maximum of 15,000 shots for die castings.