Process for making Nd-B-Fe type magnets utilizing a hydrogen and oxygen
treatment
    21.
    发明授权
    Process for making Nd-B-Fe type magnets utilizing a hydrogen and oxygen treatment 失效
    利用氢和氧处理制造Nd-B-Fe型磁体的方法

    公开(公告)号:US5286307A

    公开(公告)日:1994-02-15

    申请号:US871831

    申请日:1992-04-21

    摘要: A process for preparing a permanent magnet is disclosed. The process comprises the steps of exposing material, in particulate form, and having an overall composition comprising 8 to 30 atomic percent of a first constituent selected from the group consisting of rare earth metals, 42 to 90 atomic percent of a second constituent selected from the group consisting of transition metals and 2 to 28 atomic percent of a third constituent selected from the group consisting of substances from Group III of the Periodic Table, to hydrogen gas under conditions such that hydrogen gas is absorbed by the material, exposing the hydrided material, in particulate form, to oxygen or an oxygen-containing gas in an amount and for a period of time sufficient to passivate the material, and compacting the material. Also disclosed are products from this process, namely, passivated, hydrided particles, alloy compacts formed of passivated, hydrided material and permanent magnets, having superior properties.

    摘要翻译: 公开了一种制备永磁体的方法。 该方法包括以下步骤:以颗粒形式暴露材料,并且具有包含8至30原子%的选自稀土金属的第一组分,42-90原子%的选自以下的第二组分的总组合物: 由选自元素周期表III族的物质的过渡金属和2至28原子%的第三成分组成的氢气在氢气被材料吸收,暴露出氢化物质的条件下, 颗粒形式的氧气或含氧气体的量足以使该材料钝化,并且将其压实。 还公开了来自该方法的产品,即钝化,水合的颗粒,由钝化,氢化材料和永磁体形成的合金压块,具有优异的性能。

    Methyl-tertiary ether production
    22.
    发明授权
    Methyl-tertiary ether production 失效
    甲基叔乙醚生产

    公开(公告)号:US5254748A

    公开(公告)日:1993-10-19

    申请号:US809687

    申请日:1991-12-17

    IPC分类号: C07C5/52 C07C41/06

    CPC分类号: C07C41/06 C07C5/52 Y02P20/125

    摘要: A method for integrating several petroleum refining processes so as to efficiently produce tertiary alkyl ether compounds from a feed stream containing both saturated and unsaturated hydrocarbons is disclosed. An important step for forming isoolefins in the integrated process involves simultaneous catalytic conversion of an isoparaffin to an isoolefin and an n-olefin to an n-paraffin in a combination hydrogenation/dehydrogenation reactor. The thus produced isoolefin is reacted with a primary alcohol to form the desired tertiary alkyl ether compound in an ether forming process. Other conversion process included in the overall integration are an isomerization process to convert n-paraffins to isoparaffins and optionally an alkylation process to convert isoparaffins and olefins to an alkylate product.

    摘要翻译: 公开了一种用于整合几种石油炼制方法以便有效地从含有饱和和不饱和烃的进料流中产生叔烷基醚化合物的方法。 在一体化方法中形成异烯烃的重要步骤包括在组合氢化/脱氢反应器中将异链烷烃同时催化转化为异烯烃和正烯烃至正链烷烃。 如此制备的异烯烃与伯醇反应以在醚形成过程中形成所需的叔烷基醚化合物。 包括在总体整合中的其它转化方法是将正链烷烃转化为异链烷烃的异构化方法,以及任选的将异链烷烃和烯烃转化为烷基化产物的烷基化方法。

    Process for making Nd-B-Fe type magnets utilizing a hydrogen and oxygen
treatment
    23.
    发明授权
    Process for making Nd-B-Fe type magnets utilizing a hydrogen and oxygen treatment 失效
    使用氢和氧气处理制造ND-B-FE型磁体的方法

    公开(公告)号:US5129964A

    公开(公告)日:1992-07-14

    申请号:US403697

    申请日:1989-09-06

    IPC分类号: B22F1/00 B22F9/02 H01F1/057

    摘要: A process for preparing a permanent magnet is disclosed. The process comprises the steps of exposing material, in particulate form, and having an overall composition comprising 8 to 30 atomic percent of a first constituent selected from the group consisting of rare earth metals, 42 to 90 atomic percent of a second constituent selected from the group consisting of transition metals and 2 to 28 atomic percent of a third constituent selected from the group consisting of substances from Group III of the Periodic Table, to hydrogen gas under conditions such that hydrogen gas is absorbed by the material, exposing the hydrided material, in particulate form, to oxygen or an oxygen-containing gas in an amount and for a period of time sufficient to passivate the material, and compacting the material. Also disclosed are products from this process, namely, passivated, hydrided particles, alloy compacts formed of passivated, hydrided material and permanent magnets, having superior properties.

    Magnetic alloy and processing therefor
    24.
    发明授权
    Magnetic alloy and processing therefor 失效
    磁性合金及其加工

    公开(公告)号:US4120704A

    公开(公告)日:1978-10-17

    申请号:US789747

    申请日:1977-04-21

    IPC分类号: C22C38/30 H01F1/053 C21D1/04

    CPC分类号: C22C38/30 H01F1/053

    摘要: An iron-chromium-cobalt magnetic alloy characterized by good magnetic quality, improved hot and cold ductility and by a reduction in the minimum temperature for complete solutioning; and processing for producing said alloy. Hot ductility is improved through controlled additions of rare earth elements in conjunction with modified refining. Cold ductility is improved through a rapid cool subsequent to hot working and prior to cold working. Solutioning temperatures are lowered through controlled additions of vanadium and titanium.

    摘要翻译: 铁铬钴磁性合金,其特点是具有良好的磁性,改善了冷热延展性,降低了完全溶解的最低温度; 以及用于生产所述合金的加工。 通过与改性精炼相结合的稀土元素的控制添加来提高热延展性。 通过在热加工之后和冷加工之前的快速冷却来提高冷延展性。 通过控制添加钒和钛来降低溶解温度。

    Separator system
    27.
    发明授权
    Separator system 失效
    分离器系统

    公开(公告)号:US06451173B1

    公开(公告)日:2002-09-17

    申请号:US09476305

    申请日:1999-12-30

    IPC分类号: B01D332

    摘要: An improved apparatus useful in a process for separating a liquid stream (which can be an HF catalyst mixture) having a first liquid component (which can be HF), a second liquid component (which can be light ASO) and a third liquid component (which can be heavy ASO) is disclosed. The apparatus includes a closed vessel including an upper portion, a lower portion, and an intermediate portion, and above a bottom tray contained therein having a downcomer extending downwardly therefrom. The apparatus also includes a conduit located within the downcomer and opening below the level of the bottom tray.

    摘要翻译: 一种用于分离具有第一液体组分(其可以是HF)的液体流(其可以是HF催化剂混合物)的方法,第二液体组分(其可以是轻质ASO)和第三液体组分( 其可以是重的ASO)。 该装置包括封闭容器,其包括上部,下部和中间部分,以及容纳在其中的底部托盘上方,具有从其向下延伸的降液管。 该设备还包括位于降液管内的导管,并且在底盘的水平面下方开口。

    Magnetic strips and methods for making the same
    28.
    发明授权
    Magnetic strips and methods for making the same 失效
    磁条和制作相同的方法

    公开(公告)号:US5653824A

    公开(公告)日:1997-08-05

    申请号:US605463

    申请日:1996-02-26

    摘要: Methods for preparing magnetic strips are provided in which the strips are manufactured to a thickness of less than about 0.005 inches and are made of a ferrous alloy having a carbon content of from about 0.4 to about 1.2 weight percent. The strips can be prepared by first manufacturing an alloy having a carbon content below about 0.5 weight percent to the desired thickness and then subjecting the strip to a carburizing step to raise the carbon content in the strip. The strips can also be prepared by controlling the chemistry of the initial alloy and controlling the processing of that alloy until the desired thickness and requisite magnetic properties are obtained. The strips are particularly useful in EAS systems.

    摘要翻译: 提供制备磁条的方法,其中制造条带的厚度小于约0.005英寸,并且由碳含量为约0.4至约1.2重量%的铁合金制成。 可以通过首先制造具有低于约0.5重量%的碳含量的合金至期望的厚度,然后对带材进行渗碳步骤以提高带材中的碳含量来制备条带。 也可以通过控制初始合金的化学性质并控制该合金的加工,直到获得所需的厚度和所需的磁性能来制备条带。 这些条在EAS系统中特别有用。

    Magnetic strips and methods for making the same
    30.
    发明授权
    Magnetic strips and methods for making the same 失效
    磁条和制作相同的方法

    公开(公告)号:US5527399A

    公开(公告)日:1996-06-18

    申请号:US394705

    申请日:1995-02-27

    摘要: Methods for preparing magnetic strips are provided in which the strips are manufactured to a thickness of less than about 0.005 inches and are made of a ferrous alloy having a carbon content of from about 0.4 to about 1.2 weight percent. The strips can be prepared by first manufacturing an alloy having a carbon content below about 0.5 weight percent to the desired thickness and then subjecting the strip to a carburizing step to raise the carbon content in the strip. The strips can also be prepared by controlling the chemistry of the initial alloy and controlling the processing of that alloy until the desired thickness and requisite magnetic properties are obtained. The strips are particularly useful in EAS systems.

    摘要翻译: 提供制备磁条的方法,其中制造条带的厚度小于约0.005英寸,并且由碳含量为约0.4至约1.2重量%的铁合金制成。 可以通过首先制造具有低于约0.5重量%的碳含量的合金至期望的厚度,然后对带材进行渗碳步骤以提高带材中的碳含量来制备条带。 也可以通过控制初始合金的化学性质并控制该合金的加工,直到获得所需的厚度和所需的磁性能来制备条带。 这些条在EAS系统中特别有用。