公开(公告)号：WO2004001353A1

公开(公告)日：2003-12-31

申请号：PCT/SE2003/000871

申请日：2003-05-28

Applicant: COVIAL DEVICE AB ,  CEDELL, Tord

Inventor： CEDELL, Tord

IPC: G01H11/04

CPC classification number: G01P15/0885 ,  G01H11/04

Abstract: The disclosure relates to a method and an apparatus for sensing and indicating permanent state deviations via detection of temporary inner material oscillations in real time in parts of importance for hardware design and construction, within existing production equipment, e.g. machinery, and/or monitoring of previously built-up infrastructure. One or more at least approximately 20 µm thick amorphous or nanocrystalline band elements with high permeability and relatively high magnetostriction are applied to a pertinent part, the band element or elements, respectively, being at least partially surrounded by a multi-turn coil, such atomic movements (oscillations) as occur in any optional such state deviation in the part being transferred to the band element/elements. The deviation either gives rise to a clearly measurable and detectable magnetic flow change (dB/dt) in the coil in proportion to said atomic movements, or to a similarly measurable and detectable inductance change in the coil/coils.

Abstract translation: 本发明涉及一种用于通过在现有生产设备中的实际部件中硬件设计和构造的重要性实时检测临时内部材料振荡来检测和指示永久状态偏差的方法和装置，例如在现有的生产设备中。 机械和/或监控以前建成的基础设施。 将一个或多个至少约20μm厚的具有高磁导率和相对较高磁致伸缩的非晶或纳晶晶带元件施加到相关部分，带元件或元件分别至少部分被多匝线圈包围，这种原子 在所述部件中的任何可选的这种状态偏差中发生的移动（振荡）被转移到带元件/元件。 该偏差或者产生与所述原子运动成比例的线圈中明显可测量和可检测的磁流变化（dB / dt），或线圈/线圈中类似的可测量和可检测的电感变化。

公开(公告)号：WO1996030144A1

公开(公告)日：1996-10-03

申请号：PCT/SE1996000397

申请日：1996-03-27

Applicant: HÖGANÄS AB ,  PERSSON, Mats ,  ALAKÜLA, Mats ,  STÅHL, Jan-Eric ,  CEDELL, Tord

Inventor： HÖGANÄS AB

IPC: B22F03/02

CPC classification number: C22C32/0094 ,  H01F1/26

Abstract: The invention concerns a soft magnetic, anisotropic composite material essentially consisting of compacted, essentially flaky shaped, electrically insulated particles of essentially pure iron powder containing less than 0.01 % by weight of carbon, which particles are aligned in essentially parallel relationship and bonded together by an organic polymer resin. The new material is characterized by a green density of at least 7.4 g/cm . The invention also concerns a process for the preparation of the new material as well as the use of the material for devices operating at power frequencies.

Abstract translation: 本发明涉及一种软磁各向异性复合材料，其主要由压实的，基本上为片状的电绝缘的基本上纯的铁粉颗粒组成，该颗粒含有小于0.01重量％的碳，该颗粒基本上平行关系对准，并通过 有机聚合物树脂。 新材料的特征在于至少7.4g / cm 3的绿色密度。 本发明还涉及用于制备新材料的方法以及用于在功率频率下工作的装置的材料的使用。

公开(公告)号：WO1992020829A1

公开(公告)日：1992-11-26

申请号：PCT/SE1992000331

申请日：1992-05-19

Applicant: PROENGCO AB ,  CEDELL, Tord

Inventor： PROENGCO AB

IPC: C22C01/04

CPC classification number: H01L41/20 ,  B22F2998/00 ,  B29C70/58 ,  B29C70/62 ,  B29C2791/004 ,  B29C2791/008 ,  B29K2105/12 ,  B29K2105/16 ,  B29K2503/06 ,  B29K2995/0008 ,  C04B14/34 ,  C04B14/36 ,  C22C32/0094 ,  C22C49/00 ,  H01F1/0306 ,  H01F1/24 ,  H01F1/26 ,  B22F3/04

Abstract: Magnetostrictive powder composite and method for the manufacturing of the magnetostrictive powder composite. The powder composite according to the invention is preferably used as a magnetostrictive element in sound projectors and vibration generators, transducers, actuators and in linear motors. The powder composite consists of magnetostrictive powder grains with chemical composition (RE)xT1-x, where RE represents one or a mixture of several rare earth metals, T represents Fe, Ni, Co or Mn or a mixture of these metals and x represents atomic fraction assuming a value between 0 and 1, whereby the grains are held together by a binder. The powder composite is formed in such a way that it exhibits a homogeneous magnetic flux, has a good strength and can be made with a built-in precompression. It can be equipped with coolant channels and/or with coil loops. The powder composite is produced by pressing together the magnetostrictive powder grains and the binder in order to plastically deform the grains, either completely or partially, which causes the magnetic domains in the grains to align perpendicularly to the applied compression pressure. In an alternative mode of execution according to the invention isostatic pressing is used.

Abstract translation: 磁致伸缩粉末复合材料及其制造方法。 根据本发明的粉末复合材料优选用作声音投影仪和振动发生器，换能器，致动器和线性电动机中的磁致伸缩元件。 粉末复合材料由具有化学成分（RE）xT1-x的磁致伸缩粉末颗粒组成，其中RE表示一种或多种稀土金属的混合物，T表示Fe，Ni，Co或Mn或这些金属的混合物，x表示原子 分数假定值在0和1之间，由此颗粒通过粘合剂保持在一起。 粉末复合材料以这样的方式形成，即它表现出均匀的磁通量，具有很好的强度并且可以通过内置的预压缩来制造。 它可以配备冷却剂通道和/或线圈环。 粉末复合材料通过将磁致伸缩粉末颗粒和粘合剂压在一起而制成，以使晶粒完全或部分塑性变形，这导致晶粒中的磁畴垂直于施加的压缩压力对准。 在根据本发明的替代执行模式中，使用等静压。