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1. 发明授权

US5362031A Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven 失效
标题翻译：用于自动监测操作安全性和控制真空热处理炉过程进展的方法和装置
公开(公告)号：US5362031A
公开(公告)日：1994-11-08
申请号：US044300
申请日：1993-04-07
申请人： Paul Heilmann , Peter Minarski , Friedrich Preisser
发明人： Paul Heilmann , Peter Minarski , Friedrich Preisser
IPC分类号： C21D1/767 , C21D1/773 , F27B5/05 , F27B5/06 , F27B5/14 , F27B5/16 , F27D19/00
CPC分类号： F27D19/00 , C21D1/767 , C21D1/773 , F27B5/16 , F27B2005/064 , F27B2005/146 , F27B2005/164 , F27B2005/167
摘要： In a vacuum heat treating oven operating with hydrogen under pressure as the cooling medium, especially for the quenching of greatly heated metal workpieces (5), a method is provided for the automatic control of the progress of the process and for monitoring safety of operation. The housing (4) of the heat treating oven is for this purpose connected to gas inlet lines (9 and 10), one for the admission of the cooling gas and one for the admission of the flushing gas (H.sub.2 and N.sub.2, respectively), and also to a vacuum line (17) and to a gas outlet line (11) into each of which gas sensors (24, 39, 42) are inserted, which during the quenching process signal the gas concentration to a central processing unit (41) which also is connected to pressure sensors (19, 20) and a gas sensor (21) which issue additional signals concerning the gas pressures prevailing in each instant in the interior of the housing (4) or gas inlet line (10) and concerning the gas concentration in the environment of the oven to the central processing unit (41), which then in turn, according to preset programs, actuates the gas inlet and gas outlet valves (25, 30, and 18, 28, respectively) and turns on or off the motor-blower unit (12, 13) and the heating unit (15, 15a, . . . ).
摘要翻译：在作为冷却介质的压力下用氢气操作的真空热处理炉中，特别是用于淬火大量加热的金属工件（5）的真空热处理炉中，提供了一种用于自动控制过程进度和监测操作安全性的方法。为此，热处理炉的壳体（4）连接到气体入口管线（9和10），一个用于进入冷却气体，一个用于允许冲洗气体（分别为H2和N2），并且还连接到每个气体传感器（24,39,42）中插入的真空管线（17）和气体出口管线（11），这在淬火过程中将气体浓度信号传送到中央处理单元（41 ），其还连接到压力传感器（19,20）和气体传感器（21），气体传感器（21）发出关于在壳体（4）或气体入口管线（10）的内部的每一瞬间主要的气体压力的附加信号，并且涉及将烘箱环境中的中央处理单元（41）的气体浓度依次按照预先设定的程序分别致动气体入口和出气阀（分别为25,30和18,28），并转动电动鼓风机单元（12,13）和加热单元（15,15a ...）之间的开/关。

2. 发明授权

US5225142A Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven 失效
标题翻译：用于自动监测操作安全性和控制真空加热炉过程进展的方法和装置
公开(公告)号：US5225142A
公开(公告)日：1993-07-06
申请号：US773363
申请日：1991-10-07
申请人： Paul Heilmann , Peter Minarski , Friedrich Preisser
发明人： Paul Heilmann , Peter Minarski , Friedrich Preisser
IPC分类号： C21D1/767 , C21D1/773 , F27B5/05 , F27B5/06 , F27B5/14 , F27B5/16 , F27D19/00
CPC分类号： F27D19/00 , C21D1/767 , C21D1/773 , F27B5/16 , F27B2005/064 , F27B2005/146 , F27B2005/164 , F27B2005/167
摘要： In a vacuum heat treating oven operating with hydrogen under pressure as the cooling medium, especially for the quenching of greatly heated metal workpieces (5), a method is provided for the automatic control of the progress of the process and for monitoring safety of operation. The housing (4) of the heat treating oven is for this purpose connected to gas inlet lines (9 and 10), one for the admission of the cooling gas and one for the admission of the flushing gas (H.sub.2 and N.sub.2, respectively), and also to a vacuum line (17) and to a gas outlet line (11) into each of which gas sensors (24, 39, 42) are inserted, which during the quenching process signal the gas concentration to a central processing unit (41) which also is connected to pressure sensors (19, 20) and a gas sensor (21) which issue additional signals concerning the gas pressures prevailing in each instant in the interior of the housing (4) or gas inlet line (10) and concerning the gas concentration in the environment of the oven to the central processing unit (41), which then in turn, according to preset programs, actuates the gas inlet and gas outlet valves (25, 30, and 18, 28, respectively) and turns on or off the motor-blower unit (12, 13) and the heating unit (15, 15a, . . . ).
摘要翻译：在作为冷却介质的压力下用氢气操作的真空热处理炉中，特别是用于淬火大量加热的金属工件（5）的真空热处理炉中，提供了一种用于自动控制过程进度和监测操作安全性的方法。为此，热处理炉的壳体（4）连接到气体入口管线（9和10），一个用于进入冷却气体，一个用于允许冲洗气体（分别为H2和N2），并且还连接到每个气体传感器（24,39,42）中插入的真空管线（17）和气体出口管线（11），这在淬火过程中将气体浓度信号传送到中央处理单元（41 ），其还连接到压力传感器（19,20）和气体传感器（21），气体传感器（21）发出关于在壳体（4）或气体入口管线（10）的内部的每一瞬间主要的气体压力的附加信号，并且涉及将烘箱环境中的中央处理单元（41）的气体浓度依次按照预先设定的程序分别致动气体入口和出气阀（分别为25,30和18,28），并转动电动鼓风机单元（12,13）和加热单元（15,15a ...）之间的开/关。

3. 发明授权

US5372655A Method for the treatment of alloy steels and refractory metals 失效
$Method for the treatment of alloy steels and refractory metals$
标题翻译：用于处理合金钢和难熔金属的方法
公开(公告)号：US5372655A
公开(公告)日：1994-12-13
申请号：US871266
申请日：1992-04-14
申请人： Friedrich Preisser , Peter Minarski , Albrecht Melber , Klaus Zimmerman
发明人： Friedrich Preisser , Peter Minarski , Albrecht Melber , Klaus Zimmerman
IPC分类号： C23C8/06 , C23C8/02 , C23C8/20 , C23C8/22 , C23C8/24 , C23C8/26 , C23C8/80
CPC分类号： C23C8/02 , C23C8/80
摘要： Method for the treatment of alloy steels and refractory metals such as Ti, Zr and Nb, especially for depassivation and subsequent thermochemical surface treatment in a process chamber (1, 2) under the action of pressure and temperature, wherein, in a first process step, a first gas or gas mixture from the group N.sub.2, H.sub.2 or NH.sub.3 is admitted for the depassivation into a process chamber (1), a pressure greater than 1 bar a and a temperature between 100.degree. C. and 1,000.degree. C. is established in the chamber (1), and in a second process step a second gas or gas mixture from the group of N-, C- or B-containing gases is admitted into a process chamber (1, 2) for the thermochemical surface treatment, and a temperature between 100.degree. C. and 1,000.degree. C. at a pressure greater than or equal to 1 bar a is established.
摘要翻译：用于处理合金钢和诸如Ti，Zr和Nb的难熔金属的方法，特别是用于在压力和温度的作用下在处理室（1,2）中进行钝化和随后的热化学表面处理，其中在第一工艺步骤，允许来自组N2，H2或NH3的第一气体或气体混合物用于钝化进入处理室（1），压力大于1巴，温度在100℃至1000℃之间。在室（1）中，并且在第二工艺步骤中，来自一组含有N-，C-或B的气体的第二气体或气体混合物被允许进入用于热化学表面处理的处理室（1,2）并且建立在大于或等于1巴a的压力下在100℃和1000℃之间的温度。

4. 发明授权

US06776854B2 Process and apparatus for the partial thermochemical vacuum treatment of metallic workpieces 失效
标题翻译：金属工件部分热化学真空处理的工艺和装置
公开(公告)号：US06776854B2
公开(公告)日：2004-08-17
申请号：US10080921
申请日：2002-02-22
申请人： Udo Bardelmeier , Peter Minarski
发明人： Udo Bardelmeier , Peter Minarski
IPC分类号： C23C804
CPC分类号： C23C8/04
摘要： In the partial thermochemical vacuum treatment of metallic workpieces (1), in particular in the carburization and case hardening of workpieces (1) of case-hardening steel in a carbon-containing atmosphere, surface regions (3, 4, 5, 6) to be treated and surface regions not to be treated abut one another. In order to restrict the surface treatment to the cavities (2) of the workpieces (1) the external surface regions not to be treated are covered by reusable dismountable mould bodies (11) of a temperature-resistant material with at least one mould cavity (15). In this connection the mould body (11) consisting of a lower part (12) and an upper part (13) with openings (12b, 13b) encloses several workpieces (1) in such a way that no treatment takes place on the external surface regions of the workpieces (1). An electrically conducting mould body (11) is suitable in particular for a thermochemical treatment under the action of a plasma. Graphite or CFC is used as material for the mould bodies (11). In such a mould body the workpieces can be subjected before the carburization to a heating procedure, as well after the carburization to procedures such as diffusion, gas quenching and optionally further treatments such as deep cooling and/or annealing.
摘要翻译：在金属工件（1）的部分热化学真空处理中，特别是在含碳气氛中的表面硬化钢的工件（1）的渗碳和表面硬化中，表面区域（3,4,5,6）〜被处理和不被处理的表面区域彼此邻接。为了将表面处理限制在工件（1）的空腔（2）上，未被处理的外表面区域被具有至少一个模腔的耐温材料的可再利用的可拆卸的模体（11）覆盖 15）。在这方面，由具有开口（12b，13b）的下部（12）和上部（13）组成的模具主体（11）围绕多个工件（1），使得在外表面上不进行处理工件（1）的区域。导电模体（11）特别适用于在等离子体的作用下的热化学处理。石墨或CFC用作模具体（11）的材料。在这样的模具体中，可以在渗碳之前将工件加热到加热过程之前，以及渗碳之后进行扩散，气体淬火和任选的其它处理如深冷和/或退火的过程。

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