Heat treated tube
    1.
    发明授权
    Heat treated tube 失效
    热处理管

    公开(公告)号:US4576654A

    公开(公告)日:1986-03-18

    申请号:US438515

    申请日:1982-11-01

    IPC分类号: C22F1/18 G21C21/02

    摘要: There is provided a nuclear fuel element having a zirconium alloy cladding tube with improved corrosion resistance. The cladding tube comprises a metallurgical gradient across the width of the tube wall wherein the tube has a more corrosion-resistant metallurgical condition at the outer circumference and a less corrosion-resistant metallurgical condition at the inner circumference. The metallurgical gradient can be generated by heating an outer circumferential portion of the tube to the high alpha or mixed alpha plus beta range while maintaining the inner surface at a lower temperature, followed by cooling of the tube.

    摘要翻译: 提供了具有耐腐蚀性提高的锆合金包覆管的核燃料元件。 包层管包括横跨管壁的宽度的冶金梯度,其中管在外周具有更耐蚀的冶金条件,在内圆周处具有较少的耐腐蚀冶金条件。 可以通过将管的外周部分加热到高α或混合α+β范围同时将内表面保持在较低温度,随后冷却管而产生冶金梯度。

    Method of making fuel channel
    2.
    发明授权
    Method of making fuel channel 失效
    制造燃油通道的方法

    公开(公告)号:US4604785A

    公开(公告)日:1986-08-12

    申请号:US685265

    申请日:1984-12-21

    IPC分类号: B21C37/08 B21C37/15 B21D39/02

    摘要: A method for making a nuclear fuel channel is disclosed having a high degree of dimensional accuracy which uses the thermal expansion of a mandrel to precisely size the channel. An assembly of the mandrel and a channel preform is pulled through a die to die sink the preform into substantial surface-to-surface contact with the mandrel prior to the heating step.

    摘要翻译: 公开了一种制造核燃料通道的方法,该方法具有高度的尺寸精度,其使用心轴的热膨胀来精确地调整通道的尺寸。 心轴和通道预成型件的组件被拉动通过模具,以在加热步骤之前将预成型坯与芯棒实质性地面对表面接触。

    Bow control for metallic structures
    3.
    发明授权
    Bow control for metallic structures 失效
    弓形控制金属结构

    公开(公告)号:US4548657A

    公开(公告)日:1985-10-22

    申请号:US387829

    申请日:1982-06-14

    CPC分类号: B21D9/18 G21C3/324 Y02E30/40

    摘要: A method of controlling the bowing action of fuel channels used in nuclear reactor cores is disclosed. Each channel is heat treated and mounted in its control rod module with an orientation dependent on its prior heat treatment. Upon exposure to radiation, the channels will bow in a desired direction away from the control rod.

    摘要翻译: 公开了一种控制核反应堆核心中使用的燃料通道的弯曲作用的方法。 每个通道被热处理并且安装在其控制杆模块中,取决于其先前的热处理。 在暴露于辐射之后,通道将沿远离控制棒的期望方向弯曲。