Iron core material
    2.
    发明授权
    Iron core material 失效
    铁芯材料

    公开(公告)号:US4502982A

    公开(公告)日:1985-03-05

    申请号:US469270

    申请日:1983-02-24

    CPC分类号: H01F1/26

    摘要: Disclosed is an iron core material, comprising a high density compression molded product of a mixture of magnetic powder of iron or iron alloy having a mean particle size of 100.mu. or less and an insulating caking material such as thermosetting resins. The magnetic powder, when its mean particle size is represented by D.mu. and its resistivity by .rho..mu..OMEGA. -cm, is preferred to have a value of the resistivity which may satisfy the following equation: ##EQU1##

    摘要翻译: 公开了一种铁芯材料,其包含平均粒径为100μm以下的铁或铁合金的磁粉的混合物的高密度压缩成型体和绝热结块材料,例如热固性树脂。 当磁粉的平均粒径由D mu表示时,其电阻率由欧米茄 - 欧姆表示,优选具有可满足以下等式的电阻率值:

    Sheath heater
    4.
    发明授权
    Sheath heater 失效
    护套加热器

    公开(公告)号:US4280046A

    公开(公告)日:1981-07-21

    申请号:US98717

    申请日:1979-11-30

    IPC分类号: H05B3/18 H05B3/48 H05B3/44

    摘要: A sheath heater having a heating wire embedded in a ceramic insulator such that the thermal deformation of the heating wire is substantially prevented, wherein the heating wire is formed of a nichrome-based wire having an Al-rich surface layer so as to permit forming an oxidation-protective alumina layer on the surface of the nichrome-based wire.

    摘要翻译: 一种护套加热器,其具有嵌入在陶瓷绝缘体中的加热丝,从而基本上防止了加热丝的热变形,其中,所述加热线由具有富Al表面层的镍铬合金线形成,以便形成 镍铬合金线材表面的氧化保护氧化铝层。