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104 条记录 (耗时 0.036 秒)

    Ultrasonic inspection method and system for detecting critical flaws
    72.
    发明授权
    Ultrasonic inspection method and system for detecting critical flaws 失效
    检测关键缺陷的超声波检测方法及系统

    公开(公告)号：US06408695B1

    公开(公告)日：2002-06-25

    申请号：US09454189

    申请日：1999-12-03

    申请人： Bernard Patrick Bewlay ,  John Broddus Deaton, Jr. ,  Michael Francis Xavier Gigliotti, Jr. ,  Robert Snee Gilmore

    发明人： Bernard Patrick Bewlay ,  John Broddus Deaton, Jr. ,  Michael Francis Xavier Gigliotti, Jr. ,  Robert Snee Gilmore

    IPC分类号： G01N332

    CPC分类号： G01N29/348 ,  G01N29/11 ,  G01N2291/015 ,  G01N2291/02458 ,  G01N2291/2693

    摘要： An ultrasonic inspection method for inspecting titanium material is provided. The ultrasonic inspection method is capable of detecting critical flaws in the titanium material that may limit titanium material applications. The ultrasonic inspection method comprises fixing at least one of frequency or acoustic entity size of the titanium material as a constant for the ultrasonic inspecting; wherein the frequency that is fixed is selected based on the size of the flaws deemed critical for mechanical performance—including fatigue performance—in the titanium material, and the grain size that is fixed selected based on the size of the flaws deemed critical for mechanical performance—including fatigue performance—in the titanium material; ultrasonic inspecting the titanium material in which the step of ultrasonic inspecting the titanium material generates scattering from microstructural characteristics and features of the titanium material; detecting generated scattering; characterizing the type of detected scattering; and determining if the titanium material comprises critical flaws based on the type of scattering. If the scattering comprises predominantly Rayleigh scattering, the step of determining determines that the titanium material comprises uniform-fine grain titanium, however, if the scattering comprises Rayleigh scattering and other types of scattering, the step of determining determines that the titanium material may comprise critical flaws that may limit applications of the titanium material. The invention also provides a system for implementing the method, as embodied by the invention.

    摘要翻译： 提供了用于检查钛材料的超声检查方法。 超声波检测方法能够检测可能限制钛材料应用的钛材料的临界缺陷。 超声波检查方法包括将钛材料的频率或声学实体尺寸中的至少一个固定为超声波检查的常数; 其中固定的频率基于对钛材料的机械性能（包括疲劳性能）至关重要的缺陷的尺寸和基于对于机械性能至关重要的缺陷尺寸而选择的晶粒尺寸进行选择 - 包括疲劳性能 - 钛材料; 超声波检查钛材料的超声波检测步骤从钛材料的显微组织特征和特征产生散射的钛材料; 检测产生的散射; 表征检测到的散射的类型; 以及确定钛材料是否包括基于散射类型的关键缺陷。 如果散射主要包括瑞利散射，则确定步骤确定钛材料包含均匀细晶粒钛，然而，如果散射包括瑞利散射和其它类型的散射，则确定步骤确定钛材料可能包括关键的 可能限制钛材料应用的缺陷。 本发明还提供了一种用于实现本发明所体现的方法的系统。

    Vacuum arc remelting apparatus and process
    74.
    发明授权
    Vacuum arc remelting apparatus and process 失效
    真空电弧重熔设备及工艺

    公开(公告)号：US06295309B1

    公开(公告)日：2001-09-25

    申请号：US09651962

    申请日：2000-08-31

    申请人： Mark Gilbert Benz ,  Michael Francis Henry ,  William Thomas Carter, Jr. ,  Bernard Patrick Bewlay

    发明人： Mark Gilbert Benz ,  Michael Francis Henry ,  William Thomas Carter, Jr. ,  Bernard Patrick Bewlay

    IPC分类号： H05B360

    CPC分类号： H05B7/07

    摘要： A VAR process is conducted in an apparatus characterized by a crucible wall that provides a stable shelf anchor. The VAR apparatus includes a furnace chamber, a consumable electrode formed of a material to be remelted within the furnace chamber and a crucible within the furnace chamber. The crucible has a wall that forms a vessel to collect melt material from the consumable electrode. At least part of the wall is textured to provide area for mechanical stabilization of the shelf as the underside of the shelf melts and the upperside of the shelf forms. In a vacuum arc remelting process, a consumable electrode is loaded into a furnace chamber above a cooled crucible having a textured wall that forms a vessel to collect melt material from the consumable electrode. The process includes striking a direct electric current between the electrode and a bottom of the crucible to cause melting of material from a tip of the electrode. Melt material is collected from the tip in the crucible. The melt material is cooled to form an ingot characterized by a shelf of solidified material forming adjacent the textured section of the crucible wall in advance of a lower boundary of solidifying material.

    摘要翻译： 在由坩埚壁构成的设备中进行VAR工艺，该坩埚壁提供稳定的搁板锚。 VAR设备包括炉室，由炉室内重熔的材料形成的可消耗电极和炉室内的坩埚。 坩埚具有形成容器以从消耗性电极收集熔体材料的壁。 墙壁的至少一部分是纹理化的，以提供架子的机械稳定性的区域，因为架子的下侧熔化，并且架子的上侧形成。 在真空电弧重熔工艺中，可消耗电极被装载到具有纹理壁的冷却坩埚之上的炉室中，所述纹理壁形成容器以从可消耗电极收集熔体材料。 该过程包括在电极和坩埚的底部之间引起直流电流，引起材料从电极尖端的熔化。 从坩埚中的尖端收集熔体材料。 熔融材料被冷却以形成特征在于在凝固材料的下边界之前形成为邻近坩埚壁的纹理部分的凝固材料的搁板。

    Recrystallized cathode filament and recrystallization method
    75.
    发明授权
    Recrystallized cathode filament and recrystallization method 失效
    重结晶阴极长丝和重结晶法

    公开(公告)号：US6066019A

    公开(公告)日：2000-05-23

    申请号：US206411

    申请日：1998-12-07

    申请人： Bernard Patrick Bewlay

    发明人： Bernard Patrick Bewlay

    IPC分类号： H01J1/15 ,  H01J9/04

    CPC分类号： H01J9/042 ,  H01J1/15

    摘要： Cathode filaments are recrystallized to a microstructure that maintains ductility for proper alignment and electron emission capability. The method comprises controlled heating of a cathode filament from an ambient temperature T.sub.amb to its recrystallization temperature T.sub.recryst ; controlled holding of the cathode filament at the temperature T.sub.recryst ; and controlled cooling of the cathode filament from the temperature T.sub.recryst to the ambient temperature T.sub.amb. The cathode filament is usable in an x-ray tube and can be formed of a tungsten-rhenium material.

    摘要翻译： 将阴极长丝重结晶至具有适当对准和电子发射能力的延展性的微结构。 该方法包括将阴极细丝从环境温度Tamb控制加热到其再结晶温度Trecryst; 控制保温阴极长丝在温度Trecryst; 并将阴极长丝从温度Trecryst控制冷却至环境温度Tamb。 阴极灯丝可用于X射线管，并可由钨 - 铼材料形成。