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    • 1. 发明授权
    • Apparatus and method for removing nuclear fuel assembly end pieces
    • 用于去除核燃料组件端部件的装置和方法
    • US5001949A
    • 1991-03-26
    • US284519
    • 1988-12-15
    • Jean-Albert BeneckClaude QuayreJean MoreauDaniel Vermeille
    • Jean-Albert BeneckClaude QuayreJean MoreauDaniel Vermeille
    • G21C19/33G21C19/34
    • G21C19/34Y10T82/16672
    • An apparatus is used for cutting guide tubes of a nuclear fuel assembly below an end-piece and removing the end-piece. The apparatus includes a mount which may be removably locked and centered on the end-piece. Cutting tools insertable in the guide tubes each include a hollow shaft whose end part is split by longitudinal slits into radially expandable fingers each having a cutting edge. A stem movable axially along each shaft cooperates therewith for spreading the fingers out radially and retracting them. The shafts are mounted for rotation on a plate which is vertically movable with respect to the mount by a jack and carries a motor for simultaneously rotating all shafts. The shafts are carried by an expansion unit movable vertically with respect to the plate by a jack and including the stems. A method for separating the end-piece with the apparatus is also described.
    • 一种装置用于在端件下方切割核燃料组件的导管并移除端件。 该装置包括可拆卸地锁定并位于端件上的安装件。 可插入引导管中的切削刀具各自包括中空轴,其中端部由纵向狭缝分成可分别具有切削刃的可径向扩张的指状物。 沿着每个轴可轴向移动的杆与其配合,用于使指状物径向扩张并收回。 轴安装在一个可通过千斤顶相对于安装座垂直移动的板上旋转,并承载用于同时旋转所有轴的马达。 轴由一个膨胀单元承载,该膨胀单元通过千斤顶相对于板垂直移动并且包括杆。 还描述了用该装置分离端件的方法。
    • 3. 发明授权
    • Ceramic welding powder mixture
    • 陶瓷焊接粉末混合物
    • US5401698A
    • 1995-03-28
    • US73056
    • 1993-06-08
    • Leon P. MottetCharles M. ZvosecStephen D. ChericoAlexandre ZivkovicGuy van Marcke de LummenJean MoreauPierre Robyn
    • Leon P. MottetCharles M. ZvosecStephen D. ChericoAlexandre ZivkovicGuy van Marcke de LummenJean MoreauPierre Robyn
    • C04B35/65F27D1/16C04B35/52
    • C04B35/651F27D1/1647
    • In ceramic welding processes, oxidizing gas and a mixture of refractory and fuel powders are projected against a surface and the fuel is burnt to generate sufficient heat that the refractory powder becomes at least partially melted or softened and a cohesive refractory weld mass is progressively built up against that surface. In order to reduce any tendency for the weld mass to include a low-grade refractory phase and thus promote the refractoriness of that weld mass, the fuel powder is present in a proportion of not more than 15% by weight of the total mixture and includes at least two metals selected from aluminum, magnesium, chromium and zirconium, in that at least the major part by weight of the refractory powder consists of one or more of magnesia, alumina and chromic oxide, and in that the molar proportions of silica and calcium oxide present in the refractory powder (if any) satisfy the following expression:molar concentration of SiO.sub.2 in %.ltoreq.0.2+molar concentration of CaO in %.
    • 在陶瓷焊接工艺中,将氧化气体和耐火材料和燃料粉末的混合物投射到表面上,并且燃料被燃烧以产生足够的热量,使得耐火材料粉末至少部分地熔化或软化,并且逐渐建立粘结的难熔焊接质量 反对那个表面。 为了减少焊接质量包括低等级耐火相的倾向,从而促进该焊接质量的不耐受性,燃料粉末以不超过总混合物的15重量%的比例存在,并且包括 选自铝,镁,铬和锆中的至少两种金属,因为耐火材料粉末的至少大部分重量由氧化镁,氧化铝和氧化铬中的一种或多种组成,其中二氧化硅和钙的摩尔比例 存在于耐火材料粉末(如果有的话)中的氧化物满足以下表达式:SiO 2的摩尔浓度%≤0.2±CaO的摩尔浓度%。
    • 7. 发明授权
    • Ceramic welding process
    • 陶瓷焊接工艺
    • US5242639A
    • 1993-09-07
    • US896908
    • 1992-06-11
    • Leon P. MottetCharles M. ZvosecStephen D. ChericoAlexandre ZivkovicGuy van Marcke de LummenJean MoreauPierre Robyn
    • Leon P. MottetCharles M. ZvosecStephen D. ChericoAlexandre ZivkovicGuy van Marcke de LummenJean MoreauPierre Robyn
    • C04B35/65F27D1/16
    • C04B35/651F27D1/1647
    • In ceramic welding processes, oxidising gas and a mixture of refractory and fuel powders are projected against a surface and the fuel is burnt to generate sufficient heat that the refractory powder becomes at least partially melted or softened and a cohesive refractory mass is progressively built up against that surface. In order to reduce any tendency for the weld mass to include a low-grade refractory phase and thus promote the refractoriness of that weld mass, the fuel powder is present in a proportion of not more than 15% by weight of the total mixture and includes at least two metals selected from aluminium, magnesium, chromium and zirconium, and in that at least the major part by weight of the refractory powder consists of one or more of magnesia, alumina and chromic oxide, and in that the molar proportions of silica and calcium oxide present in the refractory powder (if any) satisfy the following expression: molar concentration of SiO.sub.2 in % .ltoreq.0.2+molar concentration of CaO in %
    • 在陶瓷焊接工艺中,氧化气体和耐火材料和燃料粉末的混合物投射在表面上,并且燃料被燃烧以产生足够的热量,使得耐火材料粉末至少部分地熔融或软化,并且内聚的耐火材料块逐渐建立成抵抗 那个表面。 为了减少焊接质量包括低等级耐火相的倾向,从而促进该焊接质量的不耐受性,燃料粉末以不超过总混合物的15重量%的比例存在,并且包括 选自铝,镁,铬和锆中的至少两种金属,并且至少大部分重量的耐火材料粉末由一种或多种氧化镁,氧化铝和氧化铬组成,其中二氧化硅和 存在于耐火材料粉末(如果有的话)中的氧化钙满足以下表达式:SiO 2的摩尔浓度%≤0.2+ CaO的摩尔浓度%