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    • 2. 发明公开
    • Improvements in or relating to the forming of extrusion dies
    • Verfahren zur Herstellung von Strangpressmatrizen。
    • EP0159809A1
    • 1985-10-30
    • EP85301941.2
    • 1985-03-20
    • Hobson Process Limited
    • Nicholson, George Richard
    • B21C25/10B30B11/22
    • B21C25/10
    • In a method of forming an extrusion die by forming an extrusion aperture 11 in a die piece 10, forcing a flowable material 14 at least partly through the extrusion aperture so that the leading surface 16 of the material becomes deformed in the extrusion direction, and then reshaping the die piece in such a manner that the axial bearing depth of the extrusion aperture at any location around its periphery corresponds to the deformation of the leading surface of the flowable material at that location, as an additional step, before or after the reshaping, the axial bearing depth of the aperture 11, at locations around its periphery, is adjusted for example by machining one surface of the die piece, by amounts dependent on the distance of said locations from the centre of the die piece.
    • 在通过在模片10中形成挤出孔11形成挤出模头的方法中,迫使可流动材料14至少部分地穿过挤压孔,使得材料的前表面16在挤出方向上变形,然后 重新成形模具,使得在其周边的任何位置处的挤压孔的轴向轴承深度对应于在该位置处的可流动材料的前表面作为再成形之前或之后的附加步骤的变形, 孔11的轴向轴承深度在其周围的位置处被调节,例如通过对模具的一个表面进行加工,其量取决于所述位置与模具中心的距离。
    • 6. 发明公开
    • A hollow extruder die for extruding a hollow member of a zinc-containing aluminum alloy
    • Strangpressmatrize zum Strangpressen vonHohlkörpernaus zinkhaltigen Aluminiumlegierungen。
    • EP0656235A1
    • 1995-06-07
    • EP94118852.6
    • 1994-11-30
    • SUMITOMO LIGHT METAL INDUSTRIES LIMITED
    • Abo, Mitsuo, c/o Sumitomo LightTanaka, Yasuyuki, c/o Sumitomo LightKumazaki, Hidenori, c/o Sumitomo LightSato, Fumihiko, c/o Sumitomo LightWakabayashi, Hiroyuki, c/o Sumitomo Light
    • B21C25/00B21C25/04
    • B21C25/025B21C25/00B21C25/04B21C25/10Y10S72/70
    • A hollow extruding die (1) for extruding a hollow section of a zinc-containing aluminum alloy is provided. The die (1) is protected from cracks and has an extended life, without requiring any substantial structural changes to the die (1). In the die mandrel (13) of the die a mandrel (13) is connected by bridges (19) with an outer cylindrical member (11). The bridges (19) have a tapered projection (23) facing toward the mandrel (13). A 3mm thick coating (25) composed of a nickel alloy is bonded on the surface of the projection (23) by padding the welding material. Instead of coating the bridges (119), a covering (125) can be attached to the surface of the bridges (119). To receive the covering (125), an engaging groove (127) extends from the root of the mandrel (113) and along the surface of the bridges (119) to the outer cylindrical member (111) of the die mandrel (101). The covering (125) is composed of the same steel material as that of the die (101) or of the nickel alloy. The covering (125) has a through hole (125b) for receiving the mandrel (113) formed on the base. At the opposite sides of the through hole (125b), the covering (125) has projecting portions that are disposed parallel to the mandrel and the covering is tapered along the bridges.
    • 提供了用于挤出含锌铝合金的中空部分的中空挤出模具(1)。 模具(1)被保护免受裂纹并且具有延长的寿命,而不需要对模具(1)进行任何实质的结构改变。 在模具的模芯(13)中,心轴(13)通过桥(19)与外圆柱形构件(11)连接。 桥(19)具有面向心轴(13)的锥形突起(23)。 通过填充焊接材料,在突起(23)的表面上结合由镍合金构成的3mm厚的涂层(25)。 代替涂覆桥(119),覆盖物(125)可以附接到桥梁(119)的表面。 为了接纳覆盖物(125),接合槽(127)从心轴(113)的根部延伸并且沿着桥梁(119)的表面延伸到模具心轴(101)的外圆柱形构件(111)。 覆盖物(125)由与模具(101)或镍合金相同的钢材构成。 覆盖物(125)具有用于容纳形成在基座上的心轴(113)的通孔(125b)。 在通孔(125b)的相对侧,覆盖物(125)具有平行于心轴设置的突出部分,并且覆盖物沿着桥部逐渐变细。