Preßformen von perforierten Gegenständen


An article (10) having side holes (11), e.g. a spacer (10) for a central heating radiator, is made of compacted loose particulate material in a die comprising a plate (1) having a vertical cavity (2), a top punch (7) and a bottom punch (4). An inner core rod (3) forms a central passageway (12) in the spacer (10) and side core rods (6) form the side holes (11). The density of the compacted material defining the side holes (11) is higher than in the remainder of the article (Figure 2).




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    DE-19508952-A1September 19, 1996Schwaebische Huettenwerke GmbhVorrichtung zur Erzeugung eines Formteils und entsprechendes Formteil
    DE-19508952-C2April 16, 1998Schwaebische Huettenwerke GmbhPreßvorrichtung zur Erzeugung eines Formteils und entsprechendes Formteil
    WO-2006080002-A1August 03, 2006Iscar Ltd.Method and apparatus for maunfacturing cutting inserts