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    • 1. 发明申请
    • METHOD FOR PRODUCING HOLLOW ARTICLE AND ARTICLE PRODUCED THEREBY
    • 生产中华文章及其制作方法
    • WO1997021507A1
    • 1997-06-19
    • PCT/US1996019668
    • 1996-12-13
    • BAUM, Robert
    • B22C09/02
    • A44C9/00A44C27/00B22C7/02B22C9/04B22C9/10B22C9/22B22D25/026
    • A process for fabricating a hollow or partially hollow article, such as a jewelry ring (1), comprises producing a first mold (10) having an inner cavity (16) shaped in accordance with the external shape of the article to be produced. A second mold (30) is produced for forming a wax core insert (50) which is inserted in the first mold cavity for forming the hollow region of the article. The second mold has an inner cavity (36) formed in the shape of, but slightly smaller than, the external shape of the article. The cavity of the second mold has holes (41, 42) which form spacer pins (56) on the wax core insert. The wax core insert is then placed in the cavity of the first mold and is maintained in a precise, predetermined position by the spacer pins. During waxing of the article, a plastiwax is introduced into and fills the cavity of the first mold, completely surrounding the wax core insert. The plastiwax hardens and is removed from the first mold cavity with the wax core insert. The wax core insert is then removed from the plastiwax article by suitable water soluble or chemical substance to form a hollow article. The plastiwax replica is then used to form a mold cavity in an investment material, which is used to cast the hollow metal article.
    • 一种用于制造中空或部分中空制品的方法,例如珠宝戒指(1),包括制造具有根据待制造制品的外形形状形成的内腔(16)的第一模具(10)。 制造第二模具(30),用于形成蜡芯插入件(50),所述蜡芯插入件插入第一模腔中以形成制品的中空区域。 第二模具具有形成为制品的外部形状但稍小于其形状的内腔(36)。 第二模具的空腔具有在蜡芯插入件上形成隔离销(56)的孔(41,42)。 然后将蜡芯插入件放置在第一模具的空腔中,并通过间隔销保持在精确的预定位置。 在制品打蜡期间,将塑性石蜡引入并填充第一模具的空腔,完全围绕蜡芯插入件。 塑性体硬化并用蜡芯插入物从第一模腔中移出。 然后通过合适的水溶性或化学物质从蜡石制品中除去蜡芯插入物以形成中空制品。 然后使用塑料复制品在投料材料中形成模具腔,其用于铸造中空金属制品。
    • 4. 发明申请
    • METHOD OF PREPARING A CASTING MOULD FOR PRECISION CASTING
    • 制备精密铸造用铸造模具的方法
    • WO1994013415A1
    • 1994-06-23
    • PCT/HU1993000073
    • 1993-12-16
    • GAL, GyörgyGAL, Tibor
    • B22C09/02
    • B22C7/026B22C9/04B22C9/10
    • In a method of preparing a casting mould for precision casting, comprising the steps of preparing a pattern of destructible material on the basis of a master pattern (4), merging the pattern into fine sand of given density, drying the fine sand cover, repeating the merging and drying steps up to reaching a predetermined thickness of the cover, curing and firing the cover and destroying thereby the structure of the pattern, the novelty lies in the steps of preparing the pattern of destructible material as a wax pattern (11) of thin wall, making in the wall of the wax pattern (11) more holes (12) conncecting to each hole (12) a funnel type raising block (5) for determining an inlet passageway (16), merging the wax pattern (11) bearing the fine sand before drying into a fluidised bed containing a mixture comprising grains of corundum of first graininess, repeating the merging step up to reaching the predetermined thickness, arranging in the holes (12) respective locks (15) for connecting layers covering the inner and outer surfaces of the wax pattern, merging at least once the wax pattern (11) into fine sand of higher than given density, and spraying it with a mixture comprising grains of corundum of second, exceeding the first graininess, then melting wax (28) or wax mixture of the wax pattern (11) and firing the body consisted of an outer pattern (17) and inner core (18) maintained together by the locks (15).
    • 在制备精密铸造用铸模的方法中,包括以下步骤:基于母版图案(4)准备可破坏材料的图案,将图案合并成细密砂,使细沙层干燥,重复 合并和干燥步骤达到盖的预定厚度,固化和烧制盖并因此破坏图案的结构,新颖性在于制备作为蜡图案(11)的可破坏材料的图案的步骤 薄壁,在蜡图案(11)的壁上形成更多孔(12),其连接到每个孔(12),用于确定入口通道(16)的漏斗式提升块(5),合并蜡图案(11) 在将干燥前的细沙干燥成含有含有第一颗粒状刚玉颗粒的混合物的流化床,重复合并步骤达到预定厚度,在孔(12)中设置各自的锁(15)用于连接 覆盖蜡图案的内表面和外表面的层,至少将蜡图案(11)合并成高于给定密度的细砂,并用包含第二颗粒的​​刚玉超过第一颗粒度的混合物喷雾,然后 熔融蜡(28)或蜡图案(11)的蜡混合物,并且由通过锁(15)保持在一起的外部图案(17)和内芯(18)组成。