Thermomechanical method for producing superalloys with increased strength and thermal stability
    3.
    发明授权
    Thermomechanical method for producing superalloys with increased strength and thermal stability 失效
    用于生产具有增强的强度和热稳定性的超级合金的热力学方法

    公开(公告)号:US06334912B1

    公开(公告)日:2002-01-01

    申请号:US09224665

    申请日:1998-12-31

    IPC分类号: C22C3000

    CPC分类号: C22F1/10

    摘要: A thermomechanical process for producing high strength and thermally stable alloys, comprising the steps of: pre-heating an alloy bar or rod stock of a pre-selected size at a temperature below that at which grain growth occurs; and thereafter rotoforging the heated alloy bar or rod stock at a sufficient deformation level and temperature to fragment the grain boundary phases of the alloy. The resulting alloy is characterized by an ultra-fine, very uniform grain size, high tensile strength at room and high temperatures, good ductility, and a stress-rupture rate that is about twice as long as conventional alloys that have not undergone the thermomechanical process.

    摘要翻译: 一种用于生产高强度和热稳定合金的热机械方法,包括以下步骤:在低于晶粒生长发生的温度下预热预选尺寸的合金棒或棒料; 然后以足够的变形水平和温度旋转加热的合金棒或棒材,以使合金的晶界相分裂。 所得合金的特征在于超细,非常均匀的晶粒尺寸,室温和高温下的高拉伸强度,良好的延展性,以及不经历机械过程的常规合金的约两倍的应力破裂速率 。

    Rotating anode for x-ray tube using interference fit
    4.
    发明授权
    Rotating anode for x-ray tube using interference fit 失效
    使用干涉配合的X射线管旋转阳极

    公开(公告)号:US5838762A

    公开(公告)日:1998-11-17

    申请号:US762013

    申请日:1996-12-11

    IPC分类号: H01J9/14 H01J35/10

    CPC分类号: H01J35/10 H01J2235/1013

    摘要: A method for assembling a rotating X-ray tube structure ensures balance retention during the life of the tube. The X-ray tube structure has a cathode for emitting electrons, and a rotor and a bearing assembly for facilitating rotation of an anode. At least one joint is identified in the X-ray tube structure and interference fit assembly is used to eliminate shifts at the joint. The interference fit assembly is particularly advantageous for eliminating even the minutest shifts in the main joints of the anode assembly. Interference fit assembly can be applied between the rotor and the anode target to provide a first joint having balance retention; and interference fit assembly can be applied between the bearing assembly and the rotor to provide a second joint having balance retention.

    摘要翻译: 一种组装旋转X射线管结构的方法确保了管子寿命期间的平衡保持。 X射线管结构具有用于发射电子的阴极和用于促进阳极旋转的转子和轴承组件。 在X射线管结构中识别至少一个关节,并且使用过盈配合组件来消除关节处的移位。 过盈配合组件对于消除甚至阳极组件的主接头中的最小变化是特别有利的。 可以在转子和阳极靶之间施加干涉配合组件,以提供具有平衡保持力的第一接头; 并且可以在轴承组件和转子之间施加过盈配合组件以提供具有平衡保持力的第二接头。

    Scintillator arrays for radiation detectors and methods for making same
    6.
    发明授权
    Scintillator arrays for radiation detectors and methods for making same 失效
    用于辐射探测器的闪烁体阵列及其制造方法

    公开(公告)号:US06448566B1

    公开(公告)日:2002-09-10

    申请号:US09681301

    申请日:2001-03-15

    IPC分类号: G01T124

    CPC分类号: G01T1/202

    摘要: To provide simpler, more efficient methods for making scintillator arrays, one embodiment of the present invention is a method for making a scintillator array. The method includes extruding a mixture of a scintillator powder and a binder into rods; laminating the extruded rods with a sinterable reflector material; and sintering the laminated rods and reflector material into a scintillator block. Scintillator array embodiments of the present invention are useful in many types of pixelated radiation detectors, such as those used in computed tomography systems.

    摘要翻译: 为了提供更简单,更有效的制造闪烁体阵列的方法,本发明的一个实施例是制造闪烁体阵列的方法。 该方法包括将闪烁体粉末和粘合剂的混合物挤出到棒中; 用可烧结的反射器材料层压挤出的棒; 并将层压棒和反射体材料烧结成闪烁体块。 本发明的闪烁体阵列实施例可用于许多类型的像素化辐射检测器,例如在计算机断层摄影系统中使用的那些。