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    Method of constructing fully dense metal molds and parts
    81.
    发明授权
    Method of constructing fully dense metal molds and parts 失效
    构建完全致密的金属模具和零件的方法

    公开(公告)号：US5927373A

    公开(公告)日：1999-07-27

    申请号：US799747

    申请日：1997-02-12

    申请人： James R. Tobin

    发明人： James R. Tobin

    IPC分类号： B22C7/02 ,  B22C9/04 ,  B22C9/06 ,  B23H1/04 ,  B23H1/06 ,  B29C33/38

    CPC分类号： B23H1/04 ,  B22C7/02 ,  B22C9/04 ,  B22C9/06 ,  B23H1/06

    摘要： A method of constructing a fully dense metal part or a metal mold half for matin with another mold half to form a mold for casting multiple parts. Steps include placing a pattern having critical pattern surfaces in a flask having an open end. The critical pattern surfaces face upward. Other steps involve covering the critical pattern surfaces with a concentrated heat reversible gel solution added to the flask, and cooling the gel solution to form an elastic solid gel mold. Further steps include removing the flask and the pattern from the elastic gel mold, and casting a ceramic mold around the solid gel mold. In other steps the gel mold is liquified for removal from the ceramic mold and the ceramic mold is inverted so that its critical ceramic surfaces face upward. Still other steps involve covering the critical ceramic surfaces with a powder, and placing a quantity of an infiltration material over the powder, and placing the ceramic mold, the powder, and the infiltration material in a furnace at a temperature sufficient to melt the infiltration material without melting and sintering the powder. The quantity of the infiltration material is sufficient to fill voids between the particles, thereby generating a fully dense mold half.

    摘要翻译： 一种用另一半模构造完全致密的金属部件或金属半模的方法，以形成用于铸造多个部件的模具。 步骤包括将具有关键图案表面的图案放置在具有开口端的烧瓶中。 关键图案面朝上。 其他步骤包括用加入烧瓶的浓热可逆凝胶溶​​液覆盖临界图案表面，并冷却凝胶溶液以形成弹性固体凝胶模具。 进一步的步骤包括从弹性凝胶模具中取出烧瓶和图案，以及在固体凝胶模具周围浇铸陶瓷模具。 在其他步骤中，凝胶模具被液化以从陶瓷模具中取出，并且陶瓷模具被倒置，使得其临界陶瓷表面朝上。 还有一些步骤涉及用粉末覆盖临界陶瓷表面，并将一定数量的渗透材料放置在粉末上，并将陶瓷模具，粉末和渗透材料放置在炉中，其温度足以熔化渗透材料 不熔化并烧结粉末。 渗透材料的量足以填充颗粒之间的空隙，从而产生完全致密的半模。

    Porous mold material for casting and a method of producing the same
    82.
    发明授权
    Porous mold material for casting and a method of producing the same 失效
    用于铸造的多孔模具材料及其制造方法

    公开(公告)号：US5841041A

    公开(公告)日：1998-11-24

    申请号：US715562

    申请日：1996-09-18

    申请人： Norihiro Asano ,  Tatsuhiko Kato

    发明人： Norihiro Asano ,  Tatsuhiko Kato

    IPC分类号： B22C9/06 ,  B22C1/00 ,  B22F3/11 ,  B22F5/00 ,  C22C1/08 ,  C22C33/02 ,  B22F3/12 ,  C22C1/09

    CPC分类号： C22C49/08 ,  B22C1/00 ,  B22F3/1103 ,  B22F3/24 ,  B22F5/007

    摘要： A porous mold material is provided that contains pores for ventilation in a metal casting, which pores range from 20 to 50 microns, and wherein the porosity value of the porous mold material ranges from 25 to 35% by volume. A method is further provided of producing a porous mold material that contains pores ranging from 20 to 50 microns for ventilation in casting, which method is characterized in that the mixing ratio of stainless steel particles to stainless steel short fibers is from 40 wt %:60 wt % to 65 wt %:35 wt %. The porous mold material of this invention does not have defects such as the inferior fluidity of a molten metal in the mold, or the shrinkage and blowholes in cast products.

    摘要翻译： 提供一种多孔模具材料，其包含在金属铸件中通风的孔隙，孔隙范围为20至50微米，并且其中多孔模塑材料的孔隙度值为25至35体积％。 进一步提供了一种制备多孔模具材料的方法，该多孔模具材料含有20至50微米的孔隙用于铸造通风，该方法的特征在于不锈钢颗粒与不锈钢短纤维的混合比为40重量％：60 wt％至65wt％：35wt％。 本发明的多孔模具材料不存在模具中的熔融金属的流动性差，铸造产品的收缩和气孔等缺陷。

    Molds, dies or forming tools having a cavity formed by thermal spraying and methods of use
    83.
    发明授权
    Molds, dies or forming tools having a cavity formed by thermal spraying and methods of use 失效
    具有通过热喷涂形成的空腔的模具，模具或成形工具以及使用方法

    公开(公告)号：US5746966A

    公开(公告)日：1998-05-05

    申请号：US740752

    申请日：1996-11-01

    申请人： Robert R. McDonald

    发明人： Robert R. McDonald

    IPC分类号： B05D1/08 ,  B22C3/00 ,  B22C9/04 ,  B22C9/06 ,  B29C33/04 ,  B29C33/38 ,  B29C33/56 ,  B29C49/28 ,  B29C49/48 ,  C23C4/00 ,  C23C4/10 ,  C23C4/12 ,  F28F13/00

    CPC分类号： B29C33/04 ,  B22C9/04 ,  B22C9/06 ,  B22C9/065 ,  B29C33/38 ,  B29C33/3842 ,  B29C33/56 ,  B29C33/565 ,  C23C4/00 ,  F28F13/003 ,  B29C2033/3864 ,  B29C33/3807 ,  B29C33/3814

    摘要： Described are molds, dies and forming tools comprising: a) a heat exchanging body support member; and b) within the support member, a molding cavity portion formed by thermal spraying metallic particles to a desired configuration in the support member. Also described are methods of making a mold, die or forming tool comprising the steps of: a) providing a body support member having a controlled and designed porosity which permits the enhancement of the heat transfer ability of said mold, die or forming tool; b) configuring a surface of the support member to a desired cavity; and c) spraying particles to the configured cavity in the support member, thereby producing a mold, die or forming tool. Preferably, the materials of construction are metallic and are applied by thermal plasma spraying. The particles may also be ceramics, metal matrix composites, ceramic matrix composites, thermoplastic resins, thermoset resins, and composites based thereupon. The controlled porosity of the body of the mold, die and/or forming tool is as important as the use of thermal spray to subsequently form the cavity.

    摘要翻译： 描述的是模具，模具和成型工具，其包括：a）热交换体支撑构件; 以及b）在所述支撑构件内，通过将金属颗粒热喷涂到所述支撑构件中所需的构造而形成的模制腔部分。 还描述了制造模具，模具或成型工具的方法，包括以下步骤：a）提供具有受控和设计的孔隙率的主体支撑构件，其允许增强所述模具，模具或成形工具的传热能力; b）将支撑构件的表面构造成所需的腔; 以及c）将颗粒喷涂到所述支撑构件中的所构造的空腔中，由此产生模具，模具或成形工具。 优选地，构造材料是金属的并且通过热等离子喷涂来施加。 颗粒也可以是陶瓷，金属基复合材料，陶瓷基复合材料，热塑性树脂，热固树脂和基于此的复合材料。 模具，模具和/或成形工具的主体的受控孔隙率与使用热喷涂随后形成空腔一样重要。

    Casting apparatus and casting method for producing cylinder block
    85.
    发明授权
    Casting apparatus and casting method for producing cylinder block 失效
    铸造设备和铸造方法制造气缸体

    公开(公告)号：US5690159A

    公开(公告)日：1997-11-25

    申请号：US703726

    申请日：1996-08-27

    申请人： Yasuyuki Mizukusa

    发明人： Yasuyuki Mizukusa

    IPC分类号： F02F1/00 ,  B22C9/06 ,  B22C9/24 ,  B22D17/00 ,  B22D17/22 ,  B22D19/08 ,  B22D29/00 ,  F02F1/10

    CPC分类号： B22D29/00 ,  F02F2001/106

    摘要： A casting apparatus and method for producing a closed deck type cylinder block capable of facilitating removal of loose cores from the casted cylinder block. A die portion for forming a water jacket portion is formed with a plurality of notched portion having a bottom wall where a projection is provided. A pair of loose cores are fitted in each notched portion in such a manner that each parting face of the loose cores are in contact with each other. A first draft is provided at each loose cores and is mounted on the projection. In this case, the end of the parting face is placed on the projection. During casting, a molten metal is introduced into a space between the bottom wall and the first draft for forming a bridge portion. Upon solidification of the molten metal, the loose cores remain in the water jacket portion, and a bore is formed at the position corresponding to the projection. If a jig is inserted into the bore, the end of the jig abuts the parting face and pushes the pair of loose cores to move away from each other. Thus, the loose cores are offset from the bridge portion for removal of the loose core from the water jacket portion.

    摘要翻译： 一种用于制造封闭甲板型气缸体的铸造装置和方法，其能够有助于从铸造气缸体中去除松散的芯。 用于形成水套部的模具部分形成有多个具有设置有突起的底壁的切口部分。 在每个切口部分中安装一对松散的芯，使得松散芯的每个分离面彼此接触。 在每个松散的芯处提供第一牵引件并安装在突起上。 在这种情况下，分离面的端部放置在突起上。 在铸造期间，将熔融金属引入到底壁和第一牵伸槽之间的空间中以形成桥接部分。 在熔融金属凝固时，松散的芯保留在水套部分中，并且在对应于突起的位置处形成孔。 如果将夹具插入孔中，则夹具的端部抵靠分型面，并推动一对松散的芯离开彼此。 因此，松散的芯部从桥接部分偏移以从水套部分移除松散的芯部。

    Process for manufacture of castings of reactive metals
    86.
    发明授权
    Process for manufacture of castings of reactive metals 失效
    制造活性金属铸件的工艺

    公开(公告)号：US5626179A

    公开(公告)日：1997-05-06

    申请号：US458904

    申请日：1995-06-02

    申请人： Alok Choudhury ,  Matthias Blum ,  Harald Scholz ,  Georg Jarczyk

    发明人： Alok Choudhury ,  Matthias Blum ,  Harald Scholz ,  Georg Jarczyk

    IPC分类号： B22D21/02 ,  A61F2/00 ,  A61F2/30 ,  A61F2/32 ,  B22C9/06 ,  B22D13/04 ,  B22D13/06 ,  B22D13/10 ,  B22D27/15 ,  B22C1/00 ,  B22C3/00

    CPC分类号： B22D13/04 ,  B22C9/061 ,  B22D13/066 ,  B22D13/102 ,  B22D27/15 ,  A61F2/32 ,  A61F2002/30957 ,  A61F2310/00023

    摘要： In the production of castings from a melt of a reactive metal selected from the group consisting of titanium, titanium alloys, and titanium-based alloys, a reusable casting mold (20) is used; the mold, at least in the area of the surface which comes in contact with the melt, consists of at least one metal selected from the group consisting of tantalum, niobium, zirconium, and/or their alloys. The casting mold (20) preferably consists, at least in the area of the surface which comes in contact with the melt, of a tantalum based alloy containing at least 50 wt. % of tantalum. The casting molds can be made of a homogeneous metal, but it is also possible to insert shells of the metals in question into a base body to form the boundaries of the mold cavities, whereas the base body itself consists of some other metal or alloy or of a nonmetal such as graphite or silicon nitride. Insofar as the casting molds in question are molds for centrifugal casting, it is preferable to use titanium, a titanium alloy, or titanium aluminide as the nonmetal for the base body.

    摘要翻译： 在从由钛，钛合金和钛基合金组成的组中选择的活性金属的熔体制造铸件时，使用可重复使用的铸模（20）; 模具至少在与熔体接触的表面区域中由至少一种选自钽，铌，锆和/或它们的合金的金属组成。 铸模（20）优选至少在与熔体接触的表面区域中包含含有至少50重量％的钽基合金的钽基合金。 ％的钽。 铸造模具可以由均质的金属制成，但是也可以将所讨论的金属的壳体插入基体中以形成模具腔的边界，而基体本身由一些其它金属或合金或 的非金属如石墨或氮化硅。 只要所涉及的铸型是用于离心铸造的模具，优选使用钛，钛合金或铝化铝作为基体的非金属。

    Porous metal body and process for producing same
    87.
    发明授权
    Porous metal body and process for producing same 失效
    多孔金属体及其制造方法

    公开(公告)号：US5625861A

    公开(公告)日：1997-04-29

    申请号：US544891

    申请日：1995-10-18

    申请人： Takashi Nishi ,  Akira Kosaka ,  Jun Funakoshi ,  Ryutaro Motoki

    发明人： Takashi Nishi ,  Akira Kosaka ,  Jun Funakoshi ,  Ryutaro Motoki

    IPC分类号： B01D39/20 ,  B22C9/06 ,  B22F3/11 ,  B22F5/00 ,  B22F1/00

    CPC分类号： B01D39/2034 ,  B22C9/06 ,  B22F3/1103 ,  B22F5/007 ,  B22F2998/10

    摘要： The porous metal body of the inventtion has a porosity of 7 to 50%, pore sizes of 1 to 500 .mu.m and a pore distribution satisfying the relationship of:(D.sub.95 -D.sub.5)/D.sub.50 .ltoreq.2.5wherein D.sub.5 is the pore size on the cumulative distribution curve of the pore sizes at a cumulative frequency of 5%, D.sub.50 is the pore size on the curve at a cumulative frequency of 50% and D.sub.95 is the pore size on the curve at a cumulative frequency of 95%. The porous body is improved in porosity characteristics and mechanical strength.The porous metal body is prepared by pressing a metal powder to shape and sintering the shaped body by hot isostatic pressing, or alternatively by enclosing a metal powder in a capsule, subjecting the encapsulated powder to a primary sintering treatment in an isostatic medium to form a primary sintered porous body and heat-treating the sintered body with the capsule removed or without removing the capsule.

    摘要翻译： 本发明的多孔金属体的孔隙率为7〜50％，孔径为1〜500μm，孔分布满足以下关系：（D95-D5）/ D50 <2.5其中D5为孔径 在累积频率为5％的孔径的累积分布曲线上，D50是累积频率为50％的曲线上的孔径，D95为累积频率为95％的曲线上的孔径。 多孔体的孔隙率特性和机械强度得到改善。 多孔金属体是通过压制金属粉末，通过热等静压来形成和烧结成形体，或者通过将金属粉末包封在胶囊中，使包封的粉末在等静压介质中进行初步烧结处理，形成 初级烧结多孔体，并且在除去胶囊或不除去胶囊之前对烧结体进行热处理。

    Undercut treating device of die casting mold
    88.
    发明授权
    Undercut treating device of die casting mold 失效
    压铸模具底切处理装置

    公开(公告)号：US5615728A

    公开(公告)日：1997-04-01

    申请号：US350004

    申请日：1994-11-29

    申请人： Sangkyu Lee

    发明人： Sangkyu Lee

    IPC分类号： B22D17/22 ,  B22C9/06 ,  B22D17/24 ,  B22D29/04 ,  B29C33/44 ,  B29C45/44

    CPC分类号： B22D17/24

    摘要： A sliding core is slidably mounted around the movable die and forms an undercut portion. A first channel communicates with the undercut portion and a second channel communicates with the first channel. A first device for forming the undercut is movably disposed in the first channel. A second device is movably disposed in the second channel for displacing the first device into the undercut portion to form the undercut when a molten metal is poured into the mold.

    摘要翻译： 滑动芯部可滑动地安装在可动模具周围并形成底切部分。 第一通道与底切部分通信，第二通道与第一通道通信。 用于形成底切的第一装置可移动地设置在第一通道中。 第二装置可移动地设置在第二通道中，用于当将熔融金属倒入模具中时将第一装置移位到底切部分中以形成底切。

    Casting mold
    89.
    发明授权
    Casting mold 失效
    铸造模具

    公开(公告)号：US5615726A

    公开(公告)日：1997-04-01

    申请号：US578487

    申请日：1995-12-26

    申请人： Atsushi Ota ,  Seizi Uda ,  Shingo Nakamura ,  Hidehiko Kadono

    发明人： Atsushi Ota ,  Seizi Uda ,  Shingo Nakamura ,  Hidehiko Kadono

    IPC分类号： B22C9/06 ,  B22C9/10 ,  B22D15/02 ,  B22D17/22 ,  B22D17/24 ,  B22D19/00 ,  B22D19/08 ,  B22D29/00

    CPC分类号： B22C9/101 ,  B22D15/02 ,  B22D17/24 ,  B22D19/0009

    摘要： A casting mold includes a cavity formed therein, and an auxiliary mold projecting into the cavity. The auxiliary mold forms a concave portion in a cast product, and it exhibits a thermal expansion coefficient being more than a thermal expansion coefficient exhibited by a molten metal to be charged into the cavity. Hence, the auxiliary mold greatly expands thermally during casting, and it keeps the expanded state during the solidification of the molten metal. Accordingly, the casting mold can prevent the casting defects resulting from the shrinkage cavities from arising in the resulting cast products. All in all, the casting mold can obviate to give the auxiliary mold a tapered configuration, and it can reduce the after-casting machining allowance to be provided in the resulting concave portion.

    摘要翻译： 铸模包括形成在其中的空腔和突出到空腔中的辅助模具。 辅助模具在铸造产品中形成凹部，并且其展现的热膨胀系数大于被填充到空腔中的熔融金属所表现的热膨胀系数。 因此，辅助模具在铸造过程中大大地膨胀，并且在熔融金属固化期间保持膨胀状态。 因此，铸模可以防止在所得铸造产品中产生由于收缩腔产生的铸造缺陷。 总而言之，铸模可以避免给予辅助模具锥形构造，并且可以减少在所得凹部中提供的后铸加工余量。