利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

22 条记录 (耗时 0.037 秒)

    Rare-earth magnet
    9.
    发明授权
    Rare-earth magnet 失效
    稀土磁铁

    公开(公告)号：US08119260B2

    公开(公告)日：2012-02-21

    申请号：US11189912

    申请日：2005-07-27

    申请人： Matahiro Komuro ,  Yuichi Satsu ,  Kunihiro Maeda ,  Yuzo Kozono

    发明人： Matahiro Komuro ,  Yuichi Satsu ,  Kunihiro Maeda ,  Yuzo Kozono

    IPC分类号： B32B15/04

    CPC分类号： H02K1/02 ,  H01F1/0572 ,  H01F1/0577 ,  H01F41/0293 ,  Y10T428/32 ,  Y10T428/325

    摘要： In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.

    摘要翻译： 在含有至少一种稀土元素的铁磁材料中，在铁磁材料的晶界或粉末表面附近形成含有至少一种碱土金属或稀土元素和氟的层。 含有至少一种稀土元素的另一层，其氟浓度低于首先介绍的层，其稀土元素浓度高于铁磁材料的主相，或氧化物层 含有稀土元素的层与第一层的一部分相邻地形成。

    Method of electrode current control in welding apparatus having a plurality of electrodes
    10.
    发明授权
    Method of electrode current control in welding apparatus having a plurality of electrodes 失效
    具有多个电极的焊接设备中的电极电流控制方法

    公开(公告)号：US4396823A

    公开(公告)日：1983-08-02

    申请号：US313832

    申请日：1981-10-22

    申请人： Masayasu Nihei ,  Satoshi Kokura ,  Eiji Ashida ,  Yuzo Kozono ,  Akira Onuma

    发明人： Masayasu Nihei ,  Satoshi Kokura ,  Eiji Ashida ,  Yuzo Kozono ,  Akira Onuma

    IPC分类号： B23K9/167 ,  B23K9/00 ,  B23K9/073 ,  B23K9/10 ,  B23K9/16 ,  B23K9/09

    CPC分类号： B23K9/1068

    摘要： In a welding apparatus having a plurality of electrodes and adapted for carrying out welding operation on a workpiece by alternately supplying currents to the individual electrodes through switching elements, an apparatus and method of controlling the currents supplied to the electrodes, comprising selecting the values of the currents supplied to the individual electrodes depending on the material of the workpiece, and carrying out the welding operation on the workpiece by alternately supplying the currents of the selected values to the individual electrodes respectively through the switching elements. The method is featured by the fact that the ratio between the individual currents is selected under the condition that the sum of the values of all the currents is maintained at a predetermined value. It is also featured by the fact that, depending on the welding condition, the values of the individual currents can be freely selected without the limitation of maintaining the sum of all the currents at the predetermined value. Therefore, the apparatus and method are applicable to welding of a variety of materials by selecting the values of the individual currents depending on whether the workpiece has a high or low melting point and also whether the workpiece has a high or low heat conductivity.

    摘要翻译： 在具有多个电极的焊接装置中，适于通过交替地通过开关元件向各个电极提供电流来对工件进行焊接操作的装置和方法，包括：选择所述电极的电流值 根据工件的材料供应到各个电极的电流，并且通过交替地通过开关元件将选定值的电流交替地提供给各个电极，从而对工件进行焊接操作。 该方法的特征在于，在所有电流的值的总和保持在预定值的条件下选择各个电流之间的比率。 这也是因为根据焊接条件，可以自由地选择各个电流的值，而不必将所有电流的总和保持在预定值。 因此，该装置和方法适用于通过根据工件是高熔点还是低熔点选择各个电流值以及工件是否具有高导热性或低导热性来对各种材料进行焊接。