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    Rebound-type hardness tester
    1.
    发明授权
    Rebound-type hardness tester 有权
    回弹型硬度计

    公开(公告)号：US06354148B2

    公开(公告)日：2002-03-12

    申请号：US09777103

    申请日：2001-02-05

    申请人： Yasunori Sato ,  Junichi Arai ,  Yuichi Minami

    发明人： Yasunori Sato ,  Junichi Arai ,  Yuichi Minami

    IPC分类号： G01N352

    CPC分类号： G01N3/52

    摘要： A rebound-type hardness tester comprises a tubular member and an indenter hammer for undergoing axial movement therein in forward and rearward directions and for impacting a specimen and rebounding therefrom. A first detecting device detects the indenter hammer during movement thereof in the forward and rearward directions. A second detecting device detects the indenter hammer after detection thereof by the first detection device during movement of the indenter hammer in the forward direction, and detects the indenter hammer before detection thereof by the first detection device during movement of the indenter hammer in the rearward direction. A measuring device measures first and second timing values corresponding to different times elapsed from the detection of the indenter hammer by the first and second detection devices. A calculating device calculates an impacting velocity and a rebounding velocity of the indenter hammer in accordance with the first and second timing values and a distance between the first and second detecting devices. A processing device calculates a hardness of the specimen in accordance with the impacting velocity and the rebounding velocity calculated by the calculating device.

    摘要翻译： 回弹型硬度计包括管状构件和压头锤，用于在前后方向上轴向移动，并用于冲击试样并从中回弹。 第一检测装置在向前和向后运动期间检测压头锤。 第二检测装置在压头锤向前移动期间，通过第一检测装置检测到压头锤，并且在压头锤沿向后方向移动期间，通过第一检测装置检测压头锤 。 测量装置测量与由第一和第二检测装置检测压头所经过的不同时间相对应的第一和第二定时值。 计算装置根据第一和第二定时值以及第一和第二检测装置之间的距离计算压头锤的冲击速度和回弹速度。 处理装置根据由计算装置计算的冲击速度和回弹速度来计算样本的硬度。

    Method of testing hardness in rebound type hardness tester
    4.
    发明授权
    Method of testing hardness in rebound type hardness tester 失效
    回弹型硬度计硬度测试方法

    公开(公告)号：US5827953A

    公开(公告)日：1998-10-27

    申请号：US45444

    申请日：1998-03-20

    申请人： Yasunori Sato ,  Junichi Arai ,  Yuichi Minami

    发明人： Yasunori Sato ,  Junichi Arai ,  Yuichi Minami

    IPC分类号： G01N3/44 ,  G01N3/00 ,  G01N3/52 ,  G01N3/30

    CPC分类号： G01N3/52 ,  G01N2203/001 ,  G01N2203/0083

    摘要： An impacting velocity v.sub.1 and a rebounding velocity v.sub.1 ' of the hammer at a second hammer velocity measurement point 12 a distance x.sub.1 apart from a first hammer velocity measurement point 11 in the system of movement of the hammer are measured and the hardness H of the specimen is calculated in accordance with Equation 1, ##EQU1## where x.sub.2 denotes the distance between the first hammer velocity measurement point 11 and the specimen 2 and .alpha. denotes the acceleration acting on said hammer. Thereby, a hardness test in a rebound type hardness tester can be performed without measuring the velocities of the hammer immediately before impacting against the specimen and immediately after the impaction.

    摘要翻译： 测量在第二锤速度测量点12处的锤的冲击速度v1和回弹速度v1'，与锤的运动系统中的第一锤速度测量点11相距一个距离x1，并且样本的硬度H 根据等式1计算， [等式 1]其中x2表示第一锤速度测量点11和样本2之间的距离，α表示作用在所述锤上的加速度。 因此，可以在不抵抗撞击样本之前立即锤击后的锤的速度来测量回弹型硬度计中的硬度试验。