Method of nitriding metal ring and apparatus therefor
    1.
    发明申请
    Method of nitriding metal ring and apparatus therefor 审中-公开
    金属环渗氮方法及其设备

    公开(公告)号:US20050247375A1

    公开(公告)日:2005-11-10

    申请号:US10528362

    申请日:2003-09-22

    摘要: A metal ring made of maraging steel is heated in the presence of a halogen compound gas, so as to eliminate an oxide film from the surface of the metal ring and to form a halogenous compound film. Thereafter, the metal ring is heated under a vacuum or reduced pressure atmosphere to eliminate the halogenous compound film, and then it is maintained under an atmosphere comprising ammonia at a processing temperature ranging between 450° C. and 500° C. for a processing time ranging between 30 and 120 minutes, so as to carry out a nitriding processing. The above nitriding processing comprises the steps of: placing the above metal ring into a heating furnace and raising the temperature inside the heating furnace to the above processing temperature; introducing a first mixed gas consisting of 50% to 90% ammonia byvolume, 0.1% to 0.9% oxygen by volume, and a residual volume consisting of nitrogen into the heating furnace, and maintaining the above processing temperature, so as to form a nitrided layer on the surface of the metal ring; and when the one-third to one-half of the processing time has passed, replacing the atmosphere inside the heating furnace by a second mixed gas consisting of 0% to 25% ammonia by volume and a residual volume consisting of nitrogen, and maintaining the above processing temperature until the remaining processing time passes.

    摘要翻译: 由马氏体时效钢制成的金属环在卤素化合物气体的存在下被加热,从而从金属环的表面除去氧化膜并形成卤化合物膜。 此后,在真空或减压气氛下加热金属环以除去卤化合物膜,然后在450℃至500℃的加工温度下将其保持在包含氨的气氛下进行加工时间 范围在30到120分钟之间,以便进行氮化处理。 上述氮化处理包括以下步骤:将上述金属环放入加热炉中并将加热炉内的温度升高至上述处理温度; 将由体积比为50%至90%的氨,0.1体积%至0.9体积%的氧气和由氮气组成的残余体积加入到加热炉中的第一混合气体,并保持上述处理温度,以形成氮化层 在金属环的表面上; 并且当处理时间的三分之一到一半之后,通过由0体积%至25体积%的氨和由氮组成的残留体积的第二混合气体代替加热炉内部的气氛,并且保持 高于处理温度,直到剩余的处理时间过去。

    Process for separating and recovering hydrogen isotope
    2.
    发明授权
    Process for separating and recovering hydrogen isotope 失效
    氢同位素分离回收方法

    公开(公告)号:US4444737A

    公开(公告)日:1984-04-24

    申请号:US251765

    申请日:1981-04-07

    IPC分类号: B01D59/33

    CPC分类号: B01D59/33

    摘要: Hydrogen isotope is separated and recovered with remarkable reduction in energy consumption in a compact apparatus using a cold reactor and a hot reactor based on dual temperature process by a combination of a first step of at least one isotope exchange reaction stage comprising contacting mists of a feed liquid cocurrently together with a reacting gas with an isotope exchange reaction catalyst at a low temperature, and a second step of a plurality of stages each comprising a gas-liquid contact of the liquid from the first step with vapor of the liquid and the reacting gas and an isotope exchange reaction between the vapor of the liquid and the reacting gas at a high temperature.

    摘要翻译: 使用冷反应器和基于双重温度过程的热反应器通过至少一个同位素交换反应阶段的第一步骤的组合,在紧凑的装置中分离和回收氢同位素,所述第一步骤包括使原料的一小部分 液体与低温下的同位素交换反应催化剂和反应气体共同流动,第二步是将第一步骤的液体与液体蒸气和反应气体的液 - 液接触 以及在高温下液体的蒸气与反应气体之间的同位素交换反应。

    Apparatus for isotope exchange reaction
    3.
    发明授权
    Apparatus for isotope exchange reaction 失效
    同位素交换反应装置

    公开(公告)号:US4395386A

    公开(公告)日:1983-07-26

    申请号:US129753

    申请日:1980-03-12

    摘要: An apparatus for isotope exchange reaction is used in an apparatus for removing tritium in heavy water-moderated nuclear reactors or heavy water production plants, and comprises a plurality of mist generators and a plurality of reactor columns, the mist generators and the reactor columns being alternately arranged and connected to one another successively in the alternate order. An ultra-sonic generator is provided each in the mist generators. A hydrophobic catalyst bed and a mist separator are provided each in the reactor columns. Water containing hydrogen isotopes to be removed is led into the mist generators to form mists. Mists of the water are supplied into the reactor columns together with hydrogen gas and isotope exchange reaction is carried out in the hydrophobic catalyst beds.

    摘要翻译: 用于同位素交换反应的装置用于在重水慢化核反应堆或重水生产设备中除去氚的装置中,并且包括多个雾化发生器和多个反应器塔,雾化发生器和反应器列交替地 相互依次排列并相互连接。 在雾发生器中每个设置超声波发生器。 在反应器塔中分别设置疏水催化剂床和雾分离器。 含有待除去的氢同位素的水被引入雾气发生器以形成雾。 雾气与氢气一起供入反应器塔中,并在疏水催化剂床中进行同位素交换反应。

    Holder for roll of stripped material
    5.
    发明授权
    Holder for roll of stripped material 失效
    用于剥皮材料的卷筒

    公开(公告)号:US4043519A

    公开(公告)日:1977-08-23

    申请号:US665542

    申请日:1976-03-10

    CPC分类号: A47K10/38

    摘要: Disclosed is a holder for a roll of sheet material, having a pair of support levers rotatable only in one vertical plane pivotally attached in the forward portions of lateral walls projecting from the opposed ends of a rear wall and normally protruding inwardly toward each other. When said roll of sheet material is pushed upwardly in the holder from below said pair of support levers, said pair of support levers are brought into contact with the corners of the roll and are consequently rotated divergently. They presently ride over the corners of the roll and begin to slide over the lateral sides of the roll. When the forward tips of the support levers reach the open ends of the tubular core at the center of the roll, said pair of support levers return to their horizontal position, with the result that the roll will be set stably in position in the holder.

    摘要翻译: 公开了一种用于一卷片材的保持器,其具有一对支撑杆,其仅在一个垂直平面中旋转,该垂直平面可枢转地安装在从后壁的相对端突出并且通常彼此向内突出的侧壁的前部中。 当所述片材卷从所述一对支撑杆的下方向上被推向所述保持器中时,所述一对支撑杆与所述辊的角部接触并因此转动。 他们目前骑在卷轴的角落上,开始在卷轴的两侧滑动。 当支撑杆的前端到达辊的中心处的管状芯的开口端时,所述一对支撑杆返回到其水平位置,结果是辊将被稳定地设置在保持器中的适当位置。