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    • 43. 发明授权
    • Method of casting and casting machine
    • 铸造机的方法
    • US06745816B2
    • 2004-06-08
    • US09852267
    • 2001-05-10
    • Keisuke BanAkira SunoharaYasuhiro SasakiKoichi OgiwaraSakuzo Nakatani
    • Keisuke BanAkira SunoharaYasuhiro SasakiKoichi OgiwaraSakuzo Nakatani
    • B22D2700
    • B22D27/18B22C9/088B22D21/007
    • The method of casting of the present invention is capable of making volume of a feeder head can be small and making cooling rate of the feeder head can be easily made lower than that of a cavity. The method is executed in a casting machine, which includes a casting die, in which the feeder head is provided between a metal inlet and the cavity and in which heat insulating of the feeder head is greater than that of the cavity so as to make cooling rate of the feeder head lower than that of the cavity. The method comprises the steps of: pouring a molten metal into the cavity; reacting the molten metal on a deoxidizing compound in the cavity so as to deoxidize an oxide film formed on a surface of the molten metal; and supplementing the molten metal in the feeder head to the cavity when the molten metal in the cavity is solidified and shrinked.
    • 本发明的铸造方法能够使供给头的体积小,能够容易地使供给头的冷却速度低于空腔的冷却速度。 该方法在铸造机器中执行,该铸造机包括铸造模具,其中进料头设置在金属入口和空腔之间,其中进料头的绝热大于空腔的绝热,以使冷却 进料头的速率低于空腔的速度。 该方法包括以下步骤:将熔融金属浇注到空腔中; 使所述熔融金属在所述空腔中的脱氧化合物上反应,以使形成在所述熔融金属表面上的氧化膜脱氧; 并且当空腔中的熔融金属凝固和收缩时,将进料头中的熔融金属补充到空腔。
    • 45. 发明授权
    • Piezoelectric ceramic transformer
    • 压电陶瓷变压器
    • US5278471A
    • 1994-01-11
    • US940024
    • 1992-09-03
    • Kaneo UeharaTakeshi InoueAkio IwamotoOsamu OhnishiYasuhiro Sasaki
    • Kaneo UeharaTakeshi InoueAkio IwamotoOsamu OhnishiYasuhiro Sasaki
    • H01L41/107H01L41/08
    • H01L41/107
    • A piezoelectric ceramic transformer includes a high impedance portion having internal electrode layers which are opposite each other in a thickness direction in a radial central portion of a piezoelectric ceramic disc; an annular insulating portion disposed externally of the high impedance portion and having no electrode; and a low impedance portion disposed externally of the annular insulating portion and having annular internal electrode layers which are opposite each other in a thickness direction, the internal electrode layers of the high impedance portion being exposed on the side end face of the piezoelectric ceramic disc at respective ends thereof without being in contact with the annular internal electrode layer of the low impedance portion and being alternately connected on the side end face with external electrodes, each of which is connected with an electric terminal, and the internal electrode layers of the low impedance portion being exposed on the side end face of the piezoelectric ceramic disc at respective ends thereof and being alternately connected on the side end face with external electrodes, each of which is connected with an electric terminal. The transformer is operable in a high frequency band and can be used for an onboard power supply.
    • 压电陶瓷变压器包括具有在压电陶瓷盘的径向中心部分中沿厚度方向彼此相对的内部电极层的高阻抗部分; 设置在高阻抗部分外部并且不具有电极的环形绝缘部分; 以及低阻抗部,其设置在所述环状绝缘部的外侧,并且具有在厚度方向上相对的环状内部电极层,所述高阻抗部的内部电极层露出在所述压电陶瓷盘的侧端面 其端部不与低阻抗部分的环形内部电极层接触,并且在侧端面上交替地连接有与电端子连接的外部电极,并且低阻抗的内部电极层 部分露出在压电陶瓷盘的各个端部的侧端面上,并且在侧端面上交替地与外部电极连接,每个外部电极与电气端子连接。 变压器可在高频段工作,可用于车载电源。