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    • 4. 发明授权
    • Process for producing cast aluminum alloy member
    • 铸造铝合金构件的制造方法
    • US09194029B2
    • 2015-11-24
    • US13266789
    • 2010-04-28
    • Hideki Takemura
    • Hideki Takemura
    • C22C21/10C22F1/053B21J1/06B21J5/00B21K1/12B22D11/00
    • C22C21/10B21J1/06B21J5/002B21K1/12B22D11/003C22F1/053
    • A production method of the present invention includes a step of obtaining an aluminum alloy melt having an alloy composition containing Fe: 0.2 to 0.35 mass %, Cu: 0.05 to 0.20 mass %, Mn: 0.3 to 0.6 mass %, Mg: 1.3 to 2.0 mass %, Zn: 4.6 to 5.1 mass %, and Zr: 0.1 mass % or more, a sum of Zr and Ti being 0.2 mass % or less, the composition satisfying a relation of ([Mg mass %]≧−0.5×[Zn mass %]+3.8) and a relation of ([Ti mass %]/[Zr mass %]≧0.2), and the balance being aluminum and inevitable impurities, and a step of obtaining an aluminum alloy ingot having a structure that has a DAS of 40 μm or less and an average crystal grain diameter of 8 μm or less by continuously casting the aluminum alloy melt at a casting rate satisfying ([maximum casting rate (mm/min)]≦−1.43×[casting diameter (mm)]+500), and a step of obtaining an aluminum alloy cast member by subjecting the aluminum alloy ingot to a homogenization treatment in which the ingot is held for 1 hour at a temperature of 450 to 600° C. By this production method, an aluminum alloy cast member free from anisotropy of plastic deformation is obtained.
    • 本发明的制造方法包括获得具有Fe:0.2〜0.35质量%,Cu:0.05〜0.20质量%,Mn:0.3〜0.6质量%,Mg:1.3〜2.0的合金组成的铝合金熔体的工序 质量%,Zn:4.6〜5.1质量%,Zr:0.1质量%以上,Zr与Ti的和为0.2质量%以下,满足关系式([Mg质量%]≥-0.5×[ Zn质量%] + 3.8)和([Ti质量%] / [Zr质量%]≥0.2)的关系,余量为铝和不可避免的杂质,以及获得具有以下结构的铝合金锭的步骤 通过以满足([最大铸造速度(mm / min)]&nlE的铸造速度连续铸造铝合金熔体,达到40μm以下,平均晶粒直径为8μm以下的DAS; -1.43×[铸造直径 mm)] + 500),以及通过对铝合金锭进行均质化处理而获得铝合金铸造件的步骤,其中锭在温度下保持1小时 通过该制造方法获得没有塑性变形的各向异性的铝合金铸件。
    • 6. 发明授权
    • Wheel bearing device and manufacturing method therefor
    • 车轮轴承装置及其制造方法
    • US08511903B2
    • 2013-08-20
    • US12704221
    • 2010-02-11
    • Yoshinori MasudaTatsuya YokotaMotonori Nakao
    • Yoshinori MasudaTatsuya YokotaMotonori Nakao
    • F16C13/00B21D22/00
    • B21K1/40B21K1/12B60B27/00F16C33/64F16C2326/02
    • A wheel bearing device of the invention includes a flanged shaft member that includes a shaft portion to which a rolling bearing is assembled, a fitting shaft portion that is formed on one end side of the shaft portion and that is fitted to a center hole of a wheel, and a plurality of flange portions that extend radially outward on an outer peripheral surface located between the shaft portion and the fitting shaft portion and each of which has a through bolt hole in which a hub bolt for fastening the wheel is arranged. Each flange portion of the wheel bearing device is formed by side extrusion when a forged recess is formed at a center of an end surface of the fitting shaft portion by cold forging. An edge portion of a cross-sectional shape taken perpendicularly to a longitudinal direction of each flange portion is formed in an R-chamfered shape.
    • 本发明的车轮轴承装置包括:凸缘轴构件,其包括轴组件的滚动轴承的轴部,形成在所述轴部的一端侧并且嵌合于所述轴部的中心孔的嵌合轴部 轮和多个凸缘部,其在位于所述轴部和所述嵌合轴部之间的外周面上径向向外延伸,并且每个所述凸缘部具有贯通螺栓孔,所述贯通螺栓孔配置有用于紧固所述车轮的轮毂螺栓。 当通过冷锻在安装轴部的端面的中心形成锻造凹部时,车轮轴承装置的每个凸缘部分由侧挤出形成。 沿着每个凸缘部分的纵向方向垂直截取的横截面形状的边缘部分形成为R倒角形状。