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    Method for fabricating fine reduced iron powders
    61.
    发明授权
    Method for fabricating fine reduced iron powders 有权
    微细还原铁粉的制造方法

    公开(公告)号：US08940075B2

    公开(公告)日：2015-01-27

    申请号：US13439118

    申请日：2012-04-04

    Applicant: Kuen-Shyang Hwang ,  Ching-Yu Chen ,  Yung-Chung Lu

    Inventor： Kuen-Shyang Hwang ,  Ching-Yu Chen ,  Yung-Chung Lu

    IPC: B22F9/04 ,  B22F9/22

    CPC classification number: B22F9/04 ,  B22F1/0048 ,  B22F9/22 ,  B22F2998/10 ,  B22F2999/00 ,  B22F2201/013 ,  B22F2201/04

    Abstract: A method for fabricating fine reduced iron powders comprises the following steps: heating fine iron oxide powders having a mean particle size of smaller than 20 μm to a reduction temperature of over 700° C. to reduce the fine iron oxide powder into iron powders that are partially sintered into iron powder agglomerates; and performing a crushing-spheroidizing process on the iron powder agglomerates to obtain individual iron powders having a mean particle size of smaller than 20 μm. The method can reduce iron oxide powers into iron powders having a rounded shape and a high packing density and a high tap density, which are suitable for the metal injection molding process and the inductor fabrication process. The reduced iron powder may further be processed using an annealing process and a second crushing-spheroidizing process in sequence to further increase the sphericity, packing density, and tap density of the reduced iron powder.

    Abstract translation: 一种制造精细还原铁粉的方法包括以下步骤：将平均粒度小于20μm的细小氧化铁粉末加热至700℃以上的还原温度，将氧化铁粉末还原成铁粉末， 部分烧结成铁粉团块; 对铁粉凝聚体进行破碎球化，得到平均粒径小于20μm的各种铁粉。 该方法可以将铁氧化物的功率降低为适合于金属注射成型工艺和电感器制造工艺的具有圆形形状和高填充密度和高振实密度的铁粉末。 还原铁粉可以进一步使用退火工艺和第二破碎球化工艺进行处理，以进一步提高还原铁粉的球形度，填充密度和振实密度。

    Method for production of metal foam or metal-composite bodies
    65.
    发明申请
    Method for production of metal foam or metal-composite bodies 审中-公开
    金属泡沫或金属复合体的生产方法

    公开(公告)号：US20080075967A1

    公开(公告)日：2008-03-27

    申请号：US11462401

    申请日：2006-08-04

    Applicant: Serguei Vatchiants

    Inventor： Serguei Vatchiants

    IPC: B32B5/18 ,  B22F3/11 ,  B22F7/04

    CPC classification number: B22F1/0007 ,  B22F1/0096 ,  B22F3/1125 ,  B22F8/00 ,  B22F2003/023 ,  B22F2998/10 ,  B22F2999/00 ,  Y02P10/24 ,  Y02W30/541 ,  Y10T428/12042 ,  B22F9/04 ,  B22F1/0003 ,  B22F3/1208 ,  B22F3/14 ,  B22F3/18 ,  B22F3/20 ,  B22F3/02 ,  B22F3/1007 ,  B22F2201/04

    Abstract: A method for the production of foamable or foamed metal pellets, parts and panels. The method comprises the steps of: i) providing a mixture of a metal alloy powder with a foaming agent powder, ii) pre-compacting the mixture of step i); iii) heating the pre-compacted mixture of step ii) to a temperature below a decomposition temperature of the foaming and at which permanent bonding of the particles occurs v) hot compacting the body for producing a compacted body made of a metal matrix embedding the foaming agent; and vi) reducing the compacted body into metal fragments and thereby obtaining dense foamable metal chips. A method for the production of a foam metal using a closed volume metal shell is also disclosed. The method comprises the steps of: a) providing metal pieces and reducing said metal pieces into smaller metal particles; b) mixing the metal particles with an additive having a decomposition temperature that is greater than a solidus temperature of said metal particles; c) pouring the mixture of step b) into a closed volume metal shell having a given thickness and providing the metal shell with at least one passage for gases to escape; d) reducing the thickness of the metal shell by applying pressure; e) heating the metal shell to a temperature above said solidus temperature of the metal particles and below said decomposition temperature of the additive, and immediately applying pressure on the metal shell sufficient to compress the metal particles and to create micro shear conditions between the metal particles so as to obtain a dense metal product.

    Abstract translation: 一种用于生产泡沫或泡沫金属颗粒，部件和面板的方法。 该方法包括以下步骤：i）提供金属合金粉末与发泡剂粉末的混合物，ii）预先压实步骤i）的混合物; iii）将步骤ii）的预压实混合物加热到低于发泡分解温度的温度，并且发生颗粒的永久粘合v）热压制体，用于制造由包含发泡体的金属基体制成的压实体 代理人 和vi）将压实体减少为金属碎片，从而获得致密的可发泡金属屑。 还公开了使用封闭体积金属壳制造泡沫金属的方法。 该方法包括以下步骤：a）提供金属片并将所述金属片减少成更小的金属颗粒; b）将金属颗粒与分解温度大于所述金属颗粒的固相线温度的添加剂混合; c）将步骤b）的混合物倒入具有给定厚度的封闭体积的金属壳中，并为金属壳提供至少一个通道用于气体逸出; d）通过施加压力来减小金属壳的厚度; e）将金属壳加热到高于金属颗粒的固相线温度并低于添加剂分解温度的温度，并立即对金属壳施加足以压缩金属颗粒的压力并在金属颗粒之间产生微剪切条件 以获得致密的金属产品。

    Method for production of metal foam or metal-composite bodies with improved impact, thermal and sound absorption properties
    69.
    发明申请
    Method for production of metal foam or metal-composite bodies with improved impact, thermal and sound absorption properties 有权
    金属泡沫或金属复合体的制造方法，具有改善的冲击，耐热和吸声性能

    公开(公告)号：US20040081571A1

    公开(公告)日：2004-04-29

    申请号：US10619717

    申请日：2003-07-15

    Inventor： Serguei Vatchiants

    IPC: B22F001/00

    CPC classification number: B22F1/0007 ,  B22F1/0096 ,  B22F3/1125 ,  B22F8/00 ,  B22F2003/023 ,  B22F2998/10 ,  B22F2999/00 ,  Y02P10/24 ,  Y02W30/541 ,  Y10T428/12042 ,  B22F9/04 ,  B22F1/0003 ,  B22F3/1208 ,  B22F3/14 ,  B22F3/18 ,  B22F3/20 ,  B22F3/02 ,  B22F3/1007 ,  B22F2201/04

    Abstract: A method for the production of foamable or foamed metal pellets, parts and panels. The method comprises the steps of: i) providing a mixture of a metal alloy powder with a foaming agent powder, ii) pre-compacting the mixture of step i); iii) heating the pre-compacted mixture of step ii) to a temperature below a decomposition temperature of the foaming and at which permanent bonding of the particles occurs v) hot compacting the body for producing a compacted body made of a metal matrix embedding the foaming agent; and vi) reducing the compacted body into metal fragments and thereby obtaining dense foamable metal chips. A method for the production of a foam metal using a closed volume metal shell is also disclosed. The method comprises the steps of: a) providing metal pieces and reducing said metal pieces into smaller metal particles; b) mixing the metal particles with an additive having a decomposition temperature that is greater than a solidus temperature of said metal particles; c) pouring the mixture of step b) into a closed volume metal shell having a given thickness and providing the metal shell with at least one passage for gases to escape; d) reducing the thickness of the metal shell by applying pressure; e) heating the metal shell to a temperature above said solidus temperature of the metal particles and below said decomposition temperature of the additive, and immediately applying pressure on the metal shell sufficient to compress the metal particles and to create micro shear conditions between the metal particles so as to obtain a dense metal product.

    Abstract translation: 一种用于生产泡沫或泡沫金属颗粒，部件和面板的方法。 该方法包括以下步骤：i）提供金属合金粉末与发泡剂粉末的混合物，ii）预先压实步骤i）的混合物; iii）将步骤ii）的预压实混合物加热到低于发泡分解温度的温度，并且发生颗粒的永久粘合v）热压制体，用于制造由包含发泡体的金属基体制成的压实体 代理人 和vi）将压实体减少为金属碎片，从而获得致密的可发泡金属屑。 还公开了使用封闭体积金属壳制造泡沫金属的方法。 该方法包括以下步骤：a）提供金属片并将所述金属片减少成更小的金属颗粒; b）将金属颗粒与分解温度大于所述金属颗粒的固相线温度的添加剂混合; c）将步骤b）的混合物倒入具有给定厚度的封闭体积的金属壳中，并为金属壳提供至少一个通道用于气体逸出; d）通过施加压力来减小金属壳的厚度; e）将金属壳加热到高于金属颗粒的固相线温度并低于添加剂分解温度的温度，并立即对金属壳施加足以压缩金属颗粒的压力并在金属颗粒之间产生微剪切条件 以获得致密的金属产品。

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