Process of the production of an atmosphere for the thermal treatment of
metals and thermal treatment apparatus
    1.
    发明授权
    Process of the production of an atmosphere for the thermal treatment of metals and thermal treatment apparatus 失效
    用于热处理金属和热处理设备的大气生产工艺

    公开(公告)号:US5242509A

    公开(公告)日:1993-09-07

    申请号:US778403

    申请日:1991-10-17

    IPC分类号: C21D1/76

    CPC分类号: C21D1/763 Y02P10/212

    摘要: The thermal treatment atmosphere is obtained by catalytic reaction of an impure mixture of nitrogen, advantageously obtained by permeation or adsorption, and hydrocarbon, the catalytic reaction being carried out at a temperature between 400.degree. and 900.degree. C., typically between 500.degree. and 800.degree. C., with a noble metal base catalyst, typically platinum or palladium on alumina support. The reaction may be carried out in a reactor placed inside or outside the furnace.

    摘要翻译: 热处理气氛是通过不利的氮气混合物(通过渗透或吸附有利地获得的)和烃的催化反应获得的,催化反应在400-900℃,通常在500℃和800℃之间的温度下进行 与贵金属碱催化剂,通常为氧化铝载体上的铂或钯。 反应可以在放置在炉内或炉外的反应器中进行。

    Process for producing ceramic-metal multilayer components and apparatus
for carrying out the process
    3.
    发明授权
    Process for producing ceramic-metal multilayer components and apparatus for carrying out the process 失效
    生产陶瓷金属多层组件的方法和实施该工艺的设备

    公开(公告)号:US5082606A

    公开(公告)日:1992-01-21

    申请号:US483182

    申请日:1990-02-22

    摘要: The invention concerns the production of ceramic-metal multilayer components comrising effecting, after making up in the crude state, in particular by metallization and stacking of pre-cut raw ceramic bands, a simultaneous firing operation, termed cofiring, on the components under an atmosphere based on hydrogen or nitrogen or a mixture of hydrogen and nitrogen, having a regulated water vapor content at a temperature of first of all between 800.degree. C. and 1800.degree. C., and more precisely either at a moderately high temperature plateau between 800.degree. C. and 1300.degree. C. for certain ceramic materials such as codierite and metallic materials such as copper and nickel, or at a temperature plateau between about 1400.degree. C. and 1800.degree. C. for refractory materials such as tungsten, molybdenum, alumina, according to which the atmosphere having a water vapor content is obtained by addition to a vector gas at (13) and (14) of a quantity of additional oxygen (15), and a quantity of additional hydrogen at (14) sufficient to obtain by hydrogen-oxidation reaction the predetermined water vapor content, and determining these quantities of addition of oxygen and the contingent addition of hydrogen so that said water vapor content is, in the course of the cofiring, that which is the most appropriate for the different stages of said cofiring.

    摘要翻译: 本发明涉及在原油状态特别是通过金属化和预切割的原始陶瓷带的堆叠之后产生的陶瓷 - 金属多层组分的生产,在气氛下的组分上同时进行称为共烧的操作 基于氢或氮或氢和氮的混合物,在800℃至1800℃之间的温度下具有调节的水蒸汽含量,更精确地在800℃至800℃的中等高温平台 对于某些陶瓷材料如铜,镍和金属材料如铜和镍,或在约1400℃至1800℃之间的温度下,对于诸如钨,钼,氧化铝等耐火材料, 根据该气氛,通过在(13)和(14)中向量气体中加入一定量的附加氧(15)获得具有水蒸气含量的气氛,并且一定量的附加水 (14)足以通过氢氧化反应获得预定的水蒸汽含量,并确定这些氧的加入量和偶然添加氢,使得在共烧的过程中所述水蒸汽含量是 是最适合于所述共烧的不同阶段。

    Process for producing a glass-metal connection
    4.
    发明授权
    Process for producing a glass-metal connection 失效
    用于生产玻璃金属连接的方法

    公开(公告)号:US5004489A

    公开(公告)日:1991-04-02

    申请号:US483177

    申请日:1990-02-22

    IPC分类号: C01B5/00 C03C27/02 C03C27/04

    CPC分类号: C01B5/00 C03C27/02 C03C27/046

    摘要: The invention concerns glass-metal sealing comprising effecting on a metallic piece, in particular an alloy based on iron and nickel or iron, nickel and cobalt, first of all a decarburization under an atmosphere, at a temperature of between 950.degree. C. and 1,150.degree. C., formed by hydrogen (10 to 99%), water vapor (1 to 8%), with a ratio hydrogen/water vapor higher than five, the possible remainder being nitrogen, then an oxidation under an atmosphere formed by an inert vector gas such as nitrogen, either at a temperature of 600.degree. C. to 800.degree. C. and with a water vapor content of 8% to 2%; or at a temperature of 900.degree. C. to 1,100.degree. C. and with a water vapor content of 4% to 0.5%; then establishing the connection. The gas mixture for a treatment atmosphere is obtained by mixing nitrogen and hydrogen conducted through pipes (13, 14), to which oxygen is added through a pipe (15) upstream of a catalytic chamber (11) permitting the elimination of the oxygen and the production of a content of water vapor.

    摘要翻译: 本发明涉及玻璃 - 金属密封,其包括在金属片上,特别是基于铁和镍或铁,镍和钴的合金,首先在气氛下脱碳,温度为950℃至1150℃ 由氢气(10至99%),水蒸气(1至8%)形成的氢气/水蒸汽高于5的氢气,可能的余量为氮气,然后在惰性气氛下氧化 载体气体如氮气,温度在600℃至800℃,水汽含量为8%至2%; 或在900〜1100℃的温度下,水汽含量为4〜0.5%。 然后建立连接。 用于处理气氛的气体混合物通过混合通过管(13,14)导入的氮气和氢气而获得,氧气通过允许消除氧气的催化室(11)上游的管(15)加入到其中, 生产水汽含量。

    Process for thermal treatment of metals
    5.
    发明授权
    Process for thermal treatment of metals 失效
    金属热处理工艺

    公开(公告)号:US5057164A

    公开(公告)日:1991-10-15

    申请号:US543434

    申请日:1990-06-26

    IPC分类号: C21D1/76 C21D9/56

    CPC分类号: C21D9/561 C21D1/76

    摘要: Process for thermal treatment of metals by passage of metallic pieces into an elongated zone under a controlled atmosphere, having an upstream section at an elevated temperature, where the controlled atmosphere comprises nitrogen and reductive chemicals, particularly hydrogen, possibly carbon monoxide; and a downstream section at a lower temperature under a controlled atmosphere. The invention is characterized by the fact that in the upstream section at an elevated temperature, the atmosphere comprises nitrogen having a residual content of oxygen between 0.5% and 5% produced by separation of air using permeation or adsorption techniques. The reductive chemicals are present at all times in a content at least sufficient to eliminate the oxygen admitted with the nitrogen. The controlled atmosphere in the section downstream from the elongated thermal treatment zone is formed by admission of a gaseous flow taken from the upstream section at an elevated temperature and transferred directly into the downstream section at a lower temperature.

    摘要翻译: 在受控气氛下通过金属片进入细长区域的金属热处理方法,其具有在升高的温度下的上游部分,其中受控气氛包含氮气和还原性化学物质,特别是氢气,可能是一氧化碳; 和在受控气氛下的较低温度下游部分。 本发明的特征在于,在升高的温度的上游部分中,气氛包含通过使用渗透或吸附技术分离空气而产生的残余氧含量在0.5%至5%之间的氮气。 所有的还原性化学品总是以至少足以消除氮气所允许的氧气的含量存在。 在细长热处理区下游的部分中的受控气氛是通过承受来自上游部分的高温气流而在较低的温度下直接转移到下游部分中形成的。

    Process for heat treating metals in a continuous oven under controlled
atmosphere
    6.
    发明授权
    Process for heat treating metals in a continuous oven under controlled atmosphere 失效
    在受控气氛下在连续烘箱中热处理金属的方法

    公开(公告)号:US5069728A

    公开(公告)日:1991-12-03

    申请号:US543581

    申请日:1990-06-26

    摘要: Heat treating metals by continuous longitudinal passage of metallic pieces in an elongated treating zone under controlled atmosphere having a high temperature upstream end where the controlled atmosphere comprises nitrogen and reducing chemical substances, such as hydrogen, possibly carbon monoxide, and a downstream cooling end under an atmosphere essentially formed by introducing nitrogen. In the high temperature upstream end, the nitrogen which constitutes the atmosphere is supplied by introducing nitrogen with a residual oxygen content not exceeding 5%, the reducing chemical substances being present at any moment in amounts at least sufficient to eliminate oxygen introduced with nitrogen. The nitrogen introduced in the downstream cooling end is substantially free of oxygen. Application of the process to the annealing of metallic pieces.

    摘要翻译: 通过在具有高温上游端的受控气氛中的细长处理区域中连续纵向通过金属片来处理金属,其中受控气氛包含氮气并还原化学物质,例如氢气,可能的一氧化碳,以及下游冷却端, 基本上通过引入氮气形成气氛。 在高温上游端,通过引入残留氧含量不超过5%的氮气来供给构成大气的氮气,还原化学物质以至少足以消除氮气引入的氧气的任何时刻存在。 在下游冷却端引入的氮基本上不含氧。 该工艺应用于退火金属件。

    Process and plant for generating nitrogen for heat treatment
    7.
    发明授权
    Process and plant for generating nitrogen for heat treatment 失效
    用于热处理产生氮气的工艺和设备

    公开(公告)号:US5728354A

    公开(公告)日:1998-03-17

    申请号:US659688

    申请日:1996-06-06

    摘要: A plant for generating a nitrogen-based gas is provided. The plant includes a source of impure nitrogen under pressure containing a residual oxygen concentration; a main gas conduit; a catalytic deoxygenation reactor; a secondary gas line connected to a source of a secondary reducing gas at one end thereof and to the main gas conduit at a point situated upstream of the catalytic deoxygenation reactor at another end thereof; and a device for removing water vapor present in a gas. The source of impure nitrogen is connected to the catalytic deoxygenation reactor via the main gas conduit. The main gas conduit between the source of impure nitrogen and the point where the secondary gas line is connected is devoid of any flow control device.

    摘要翻译: 提供了一种用于产生氮气体的设备。 该设备包括在压力下含有残余氧浓度的不纯氮源; 主要气体管道 催化脱氧反应器; 二次气体管线在其一端连接到二次还原气体源,并且在位于催化脱氧反应器的另一端的上游的点处连接到主气体导管; 以及用于去除气体中存在的水蒸气的装置。 不纯氮的来源通过主气体导管连接到催化脱氧反应器。 不纯氮源和连接二次气管线的点之间的主要气体导管没有任何流量控制装置。

    Method and apparatus for controlling the decarburization of steel components in a furnace
    8.
    发明授权
    Method and apparatus for controlling the decarburization of steel components in a furnace 有权
    控制炉内钢组件脱碳的方法和装置

    公开(公告)号:US06635121B2

    公开(公告)日:2003-10-21

    申请号:US09498199

    申请日:2000-02-04

    IPC分类号: C23C806

    CPC分类号: C21D1/76 C21D3/04

    摘要: The invention relates to a method for controlling the decarburization of steel components in a furnace during heat treating processes. The concentration of CO2 and/or CO in the furnace is monitored in a first batch in order to determine periods of elevated CO2/CO concentrations, and inert gas is injected in subsequent batches during the previously determined periods of elevated CO2/CO concentrations.

    摘要翻译: 本发明涉及一种在热处理过程中控制炉中钢组分脱碳的方法。 在第一批中监测炉中CO 2和/或CO的浓度,以确定升高的CO 2 / CO浓度的时间段,并且在先前确定的CO 2 / CO浓度升高期间,随后的批次中注入惰性气体。

    Process for generating nitrogen for heat treatment
    9.
    发明授权
    Process for generating nitrogen for heat treatment 失效
    用于产生氮气用于热处理的方法

    公开(公告)号:US5695731A

    公开(公告)日:1997-12-09

    申请号:US478393

    申请日:1995-06-07

    摘要: A process for generating a nitrogen-based gas, comprising the steps of: (i) combining a secondary reducing gas including at least one reducing gas with a primary nitrogen gas including 0.5-5% by volume of oxygen, the combining of the secondary gas being performed according to an uncontrolled all-or-nothing method; (ii) reacting the primary gas and the secondary gas in a catalytic deoxygenation reactor so as to obtain a nitrogen-based reaction gas which includes water vapor; and (iii) removing at least a part of the water vapor present in the nitrogen-based reaction gas by cooling the reaction gas under pressure to induce formation of a liquid phase and then extracting the liquid phase from the reaction gas under pressure to obtain a purified reaction gas.

    摘要翻译: 一种产生氮气体的方法,包括以下步骤:(i)将包含至少一种还原气体的二次还原气体与包含0.5-5体积%氧气的初级氮气组合,将二次气体 根据不受控制的全或无方法执行; (ii)在催化脱氧反应器中使初级气体和次级气体反应,以获得包括水蒸汽的氮基反应气体; 和(iii)通过在压力下冷却反应气体来除去存在于氮系反应气体中的至少一部分水蒸汽,引起液相的形成,然后在压力下从反应气体中提取液相,得到 纯化反应气体。