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    • 2. 发明授权
    • Composite alloy steel powder and sintered alloy steel
    • 复合合金钢粉末和烧结合金钢
    • US4954171A
    • 1990-09-04
    • US381652
    • 1989-07-14
    • Shigeaki TakajoOsamu FurukimiKuniaki OguraKeiichi MarutaTeruyoshi AbeIchio Sakurada
    • Shigeaki TakajoOsamu FurukimiKuniaki OguraKeiichi MarutaTeruyoshi AbeIchio Sakurada
    • C22C33/02
    • C22C33/0264C22C33/0207C22C33/0257Y10T428/12181
    • Provided herein are high-strength high-toughness sintered alloy steel and composite alloy steel powder useful for the production thereof. The sintered alloy steel contains, as the alloy components in the final product, Ni, Mo, and/or W, and C, if necessary, said alloy being composed of 0.50-3.50 wt % of Ni, 0.65-3.50 wt % of Mo+1/2W, (and 0.3-0.8 wt % of C, if necessary), and the remainder of Fe and inevitable impurities, and has a density higher than 7.0 g/cm.sup.3 and a tensile strength higher than 130 kgf/mm.sup.2 after quenching and tempering. The composite alloy steel powder is composed of iron powder particles and powdery alloy components attached by diffusion to part of the surface of the iron powder particles, with the content of Ni and the content of Mo+1/2W in the steel powder of particle diameter smaller than 45 .infin.m being in the range of 2.0-4.2 times the average content in the entire steel powder. The sintered alloy steel has high strength and high toughness despites its comparatively low alloy composition and can be produced without any special equipment. The heat-treated sintered steel meets the requirements for automotive parts and the like.
    • PCT No.PCT / JP88 / 01007 Sec。 371日期:1989年7月14日 102(e)日期1989年7月14日PCT提交1988年9月30日PCT公布。 公开号WO89 / 02802 日本1989年4月6日。这里提出了用于制造高强度高韧性烧结合金钢和复合合金钢粉末。 烧结合金钢作为最终产品中的合金成分含有Ni,Mo和/或W和C,如果需要,所述合金由0.50-3.50wt%的Ni,0.65-3.50wt%的Mo + 1 / 2W,(如果需要,为0.3〜0.8重量%的C),余量为Fe和不可避免的杂质,并且在淬火后具有高于7.0g / cm 3的密度和高于130kgf / mm 2的拉伸强度 并回火。 复合合金钢粉末由铁粉颗粒和粉末状合金组分组成,通过扩散到铁粉颗粒表面的一部分,其中Ni含量和Mo + 1 / 2W含量在钢粉中的粒径 小于45的INFINITY m在整个钢粉末的平均含量的2.0-4.2倍的范围内。 烧结合金钢具有较高的强度和高韧性,可以使其相对低的合金组成不受任何特殊的设备制造。 热处理烧结钢满足汽车部件等的要求。
    • 10. 发明申请
    • COMMUTATOR MOTOR AND ELECTRIC VACUUM CLEANER USING THE SAME
    • 通用电机和电动真空清洁器
    • US20080238241A1
    • 2008-10-02
    • US12019009
    • 2008-01-24
    • Tsukasa TANIGUCHIYoshihisa IshikawaTeruyoshi Abe
    • Tsukasa TANIGUCHIYoshihisa IshikawaTeruyoshi Abe
    • H02K1/06H02K1/02H02K13/04A47L11/00H02K15/02
    • H02K1/02H02K1/04H02K15/02
    • An efficient and high-performance commutator motor in which both torque enhancement and iron loss reduction are achieved is provided by ensuring a sufficient area occupied by field windings wound on main poles and further suppressing the influence of armature counteractive magnetic flux and reducing pulsating torque. The commutator motor includes a stator and an armature. The stator includes a stator iron core having the main poles and slots and the field windings disposed in the slots. The armature includes an armature iron core having slots and teeth and armature windings wound in the slots. The stator and armature iron cores are formed of laminated steel sheets. The iron cores are formed by etching process. Multiple through holes are formed in the main poles opposed to the air gap positioned on the forward side in the direction of armature rotation by etching process.
    • 通过确保在主极上缠绕的励磁绕组所占的面积足够大,进一步抑制电枢反向磁通量的影响并减小脉动转矩,提供了实现转矩提高和减少铁损的高性能高性能换向器电动机。 换向器电动机包括定子和电枢。 定子包括具有主极和槽的定子铁心和设置在槽中的励磁绕组。 电枢包括具有槽和齿的电枢铁芯和缠绕在槽中的电枢绕组。 定子和电枢铁芯由层压钢板形成。 铁芯通过蚀刻工艺形成。 在通过蚀刻工艺在电枢旋转方向上位于前侧的气隙相对的主极中形成多个通孔。