High strength spring steel and steel wire

    公开(公告)号:US10131973B2

    公开(公告)日:2018-11-20

    申请号:US11630222

    申请日:2005-11-30

    摘要: The present invention provides spring steel used for spring steel wire achieving both high strength and cold coilability and spring steel wire, that is, spring steel containing, by mass %, C: 0.45 to 0.70%, Si: 1.0 to 3.0%, Mn: 0.05 to 2.0%, P: 0.015% or less, S: 0.015% or less, N: 0.0015 to 0.0200%, and t-O: 0.0002 to 0.01 and further limiting Al≤0.01% and Ti≤0.003%. Further, it is characterized by satisfying the following regarding the cementite-based spherical carbides present at an observed plane, an occupied area ratio of grains with a circle equivalent diameter of 0.2 μm or more of 7% or less, a density of presence of grains with a circle equivalent diameter of 0.2 to 3 μm of 1/μm2 or less, and a density of presence of grains with a circle equivalent diameter 3 μm or more of 0.001/μm2 or less, having an prior austenite grain size number of #10 or higher and a residual austenite of 15 mass % or less, and having an area ratio of poor regions with a small density of presence of cementite-based carbides of a circle equivalent diameter of 2 μm or more of 3% or less.

    PORTABLE TERMINAL DEVICE, IMAGE DISPLAY METHOD USED FOR SAME, AND RECORDING MEDIUM TO RECORD PROGRAM FOR SAME
    5.
    发明申请
    PORTABLE TERMINAL DEVICE, IMAGE DISPLAY METHOD USED FOR SAME, AND RECORDING MEDIUM TO RECORD PROGRAM FOR SAME 有权
    便携式终端设备,用于其的图像显示方法,以及记录用于记录程序的介质

    公开(公告)号:US20110169865A1

    公开(公告)日:2011-07-14

    申请号:US13119046

    申请日:2009-09-15

    申请人: Hiroshi Hagiwara

    发明人: Hiroshi Hagiwara

    IPC分类号: G06T3/60

    摘要: Provided are a portable terminal device, an image display method used for same and a recording medium to record a program for same that enable display of images suitable for various forms of use, such as when the screen orientation or input operation is changed, and display of information pertaining to the images. The portable terminal device can make changes for multiple forms of use and has detection means for detecting a change in the form of use, and changing means for changing the method to be used to display image-related information on a display screen according to the detection result by the detection means.

    摘要翻译: 提供了一种便携式终端装置,用于其的图像显示方法和用于记录适合于各种形式的图像的图像的程序的记录介质,例如当屏幕取向或输入操作改变时,显示 关于图像的信息。 便携式终端装置可以对多种使用形式进行变更,并且具有用于检测使用形式的变化的检测装置,以及用于根据检测改变用于在显示画面上显示图像相关信息的方法的改变装置 由检测装置产生。

    High strength spring-use heat treated steel
    7.
    发明申请
    High strength spring-use heat treated steel 审中-公开
    高强度弹簧使用热处理钢

    公开(公告)号:US20090205753A1

    公开(公告)日:2009-08-20

    申请号:US11918997

    申请日:2007-03-29

    IPC分类号: C22C38/02

    摘要: The present invention provides spring-use heat treated steel which is cold coiled, can achieve both sufficient atmospheric strength and coiling workability, has a tensile strength of 2000 MPa or more, and can improve the performance as a spring by heat treatment after shaping the spring, that is, heat treated steel for high strength spring containing, by mass %, C: 0.45 to 0.9%, Si: 1.0 to 3.0%, Mn: 0.1 to 2.0%, V: over 0.1 to 1.0%, N: limited to 0.007% or less, and a balance of Fe and unavoidable impurities, and satisfying, in terms of the analyzed value of the extracted residue after heat treatment, [amount of V in filtrate filtered by 0.2 μm filter (mass %)]≧[amount of V in steel (mass %)]×0.4.

    摘要翻译: 本发明提供一种冷卷绕弹簧用热处理钢,能够获得足够的大气强度和卷取加工性,拉伸强度为2000MPa以上,并且能够在成形弹簧后通过热处理提高作为弹簧的性能 即,以质量%计含有C:0.45〜0.9%,Si:1.0〜3.0%,Mn:0.1〜2.0%,V:0.1〜1.0%以下的高强度弹簧用热处理钢,N:限于 0.007%以下,余量由Fe和不可避免的杂质构成,从热处理后的提取残渣的分析值来看,[0.2μm过滤器过滤的滤液中的V量(质量%)] = [ 钢中V含量(质量%)]×0.4。

    Steel wire for high-strength springs and method of producing the same
    8.
    发明授权
    Steel wire for high-strength springs and method of producing the same 有权
    高强度弹簧用钢丝及其制造方法

    公开(公告)号:US06338763B1

    公开(公告)日:2002-01-15

    申请号:US09407103

    申请日:1999-09-27

    IPC分类号: C21D902

    摘要: This invention provides an oil-tempered wire having high strength (tensile strength of not less than 1960 MPa) and excellent workability and specifically provides a steel wire for high-strength springs comprising as steel components, in weight percent, C   0.4-0.7% Si   1.2-2.5% Mn   0.1-0.5% Cr   0.4-2.0% Al 0.0001-0.005%, and being limited to P not more than 0.015% and S not more than 0.015%, the balance being Fe and unavoidable impurities, the steel wire having no nonmetallic inclusions of a size greater than 15 &mgr;m, a tensile strength of not less than 1960 MPa, and a yield ratio (&sgr;0.2/&sgr;B) of not less than 0.8 and not greater than 0.9 or a yield ratio (&sgr;0.2/&sgr;B) of not less than 0.8 and an amount of residual austenite of not greater than 6%. This invention also provides a method of producing the steel wire.

    摘要翻译: 本发明提供一种具有高强度(抗拉强度不低于1960MPa)和优异的加工性的油回火丝,具体提供了一种用于高强度弹簧的钢丝,其包括重量百分比,余量为Fe和不可避免的钢组分 杂质,钢丝不具有大于15μm的非金属夹杂物,拉伸强度不小于1960MPa,屈服比(σ0.2/σB)不小于0.8且不大于0.9或不大于0.9 屈服比(σ0.2/σB)不小于0.8,残余奥氏体量不大于6%。 本发明还提供一种钢丝的制造方法。

    Electric motor for driving a piston pump and method of assembly
    9.
    发明授权
    Electric motor for driving a piston pump and method of assembly 失效
    用于驱动活塞泵的电动马达和组装方法

    公开(公告)号:US06182350B2

    公开(公告)日:2001-02-06

    申请号:US09119580

    申请日:1998-07-21

    IPC分类号: H02K1502

    摘要: An electric motor for driving a piston pump assembled thereto is disclosed wherein a load from the piston pump acts radially on an armature shaft of the electric motor. The electric motor is assembled such that the outer ring of a yoke bearing is connected to a yoke, and the outer ring of a first pump housing bearing is press fit to a pump housing. One end of the armature shaft is press fit to the yoke bearing inner ring, and the other end of the armature shaft is press fit to the first pump housing bearing inner ring. Thus, wobbling of the armature shaft in the axial and radial directions is minimized or eliminated.

    摘要翻译: 公开了一种用于驱动组装在其上的活塞泵的电动机,其中来自活塞泵的负载径向地作用在电动机的电枢轴上。 电动机被组装成使得轭架的外圈连接到轭架,并且第一泵壳体轴承的外圈压配合到泵壳体。 电枢轴的一端压配在轭架内圈上,电枢轴的另一端压配合到第一个泵壳轴承内圈。 因此,电枢轴在轴向和径向上的摆动被最小化或消除。