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公开(公告)号：US07276204B2
公开(公告)日：2007-10-02
申请号：US10107449
申请日：2002-03-28
IPC分类号： C21D1/74
摘要： The invention provides a carburization treatment method in which a carburization treatment is conducted simultaneously with an operation of supplying a hydrocarbon gas and an oxidative gas into a furnace kept under a reduced pressure. Preferably, the internal pressure within the furnace is kept at 0.1 to 101 kPa, the hydrocarbon gas is one, two or more than two kinds of gases selected from the group consisting of C3H8, C3H6, C4H10, C2H2, C2H4, C2H6 and CH4, while the oxidative gas is an air, an O2 gas, or CO2 gas.
摘要翻译： 本发明提供一种渗碳处理方法，其中与将烃气体和氧化性气体供给到保持在减压下的炉子的操作同时进行渗碳处理。 优选地，炉内的内部压力保持在0.1至101kPa，烃气体是选自C 3 H 8的一种，两种或两种以上的气体 C 3 H 6，C 4 H 10，C 2 H 2，C 3 H 6， 2个H 2，2个2个H 2，2个H 6，和C 2 CH 4，而氧化气体是空气，O 2气体或CO 2气体。
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公开(公告)号：US06709629B2
公开(公告)日：2004-03-23
申请号：US10108770
申请日：2002-03-28
IPC分类号： C21D162
CPC分类号： C23C8/20 , F27B5/04 , F27B5/08 , F27B5/14 , F27B5/18 , F27B9/045 , F27B9/34 , F27B2005/166 , F27D1/0009 , F27D11/00 , F27D2007/066 , F27D2009/0016 , G01N27/12
摘要： A vacuum heat treatment furnace comprising a furnace shell, a casing arranged in an inner side of the furnace shell, a heat insulating layer consisting of a thick plate-like alumina-silica series ceramic fiber blanket and a thin plate-like alumina series ceramic material arranged in an inside of the casing, and a heater arranged in a heating room surrounded by the heat insulating layer. A method of and apparatus for measuring a carbon concentration in an atmosphere in a treating room having a reduced pressure, wherein a carbon concentration measuring body is transferred from an external portion of a furnace shell of a heat treatment furnace into the treating room within the furnace shell, the carbon concentration measuring body is reacted with the atmosphere in the treating room for a predetermined time, the carbon concentration measuring body is gradually cooled for a predetermined time, and an amount of carbon in the carbon concentration measuring body is measured in the atmospheric pressure at a room temperature.
摘要翻译： 一种真空热处理炉，包括炉壳，布置在炉壳内侧的壳体，由厚板状氧化铝 - 二氧化硅系陶瓷纤维毯和薄板状氧化铝系陶瓷材料构成的隔热层 布置在壳体的内部，以及布置在由绝热层包围的加热室中的加热器。 一种用于测量具有减压的处理室中的气氛中的碳浓度的方法和装置，其中将碳浓度测量体从热处理炉的炉壳的外部转移到炉内的处理室中 将碳浓度测定体与处理室内的气氛反应规定时间，将碳浓度测定体逐渐冷却规定时间，在大气中测定碳浓度测定体的碳量 室温下的压力。
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公开(公告)号：US07575643B2
公开(公告)日：2009-08-18
申请号：US10107206
申请日：2002-03-28
摘要： The invention provides a carburization treatment method in which the carburization treatment is conducted under a condition where an atmosphere within the furnace is maintained at a high carbon potential which is slightly blow a carbon solid solubility. Preferably, the internal pressure within the furnace is kept at 0.1 to 101 kPa, the hydrocarbon gas is one, two or more than two kinds of gases selected from the group consisting of C3H8, C3H6, C4H10, C2H2, C2H4, C2H6 and CH4, while the oxidative gas is an air, an O2 gas, or CO2 gas.
摘要翻译： 本发明提供一种渗碳处理方法，其中渗碳处理在炉内的气氛保持在高碳电势的条件下进行，其稍微吹动碳固体溶解度。 优选地，炉内的内压保持在0.1〜101kPa，烃气是选自C3H8，C3H6，C4H10，C2H2，C2H4，C2H6和CH4中的一种，两种或两种以上的气体， 而氧化气体是空气，O 2气体或CO 2气体。
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公开(公告)号：US20080073002A1
公开(公告)日：2008-03-27
申请号：US11898158
申请日：2007-09-10
IPC分类号： C23C8/20
摘要： The invention provides a carburization treatment method in which a carburization treatment is conducted simultaneously with an operation of supplying a hydrocarbon gas and an oxidative gas into a furnace kept under a reduced pressure. Preferably, the internal pressure within the furnace is kept at 0.1 to 101 kPa, the hydrocarbon gas is one, two or more than two kinds of gases selected from the group consisting of C3H8, C3H6, C4H10, C2H2, C2H4, C2H6 and CH4, while the oxidative gas is an air, an O2 gas, or CO2 gas.
摘要翻译： 本发明提供一种渗碳处理方法，其中与将烃气体和氧化性气体供给到保持在减压下的炉子的操作同时进行渗碳处理。 优选地，炉内的内部压力保持在0.1至101kPa，烃气体是选自C 3 H 8的一种，两种或两种以上的气体 C 3 H 6，C 4 H 10，C 2 H 2，C 3 H 6， 2个H 2，2个2个H 2，2个H 6，和C 2 CH 4，而氧化气体是空气，O 2气体或CO 2气体。
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5.发明授权Vacuum heat treatment furnace and method of and apparatus for measuring carbon concentration in atmosphere having reduced pressure. 有权真空热处理炉及用于测量具有减压的大气中碳浓度的方法和装置。公开(公告)号：US07024916B2
公开(公告)日：2006-04-11
申请号：US10760056
申请日：2004-01-16
IPC分类号： G01N25/00
CPC分类号： C23C8/20 , F27B5/04 , F27B5/08 , F27B5/14 , F27B5/18 , F27B9/045 , F27B9/34 , F27B2005/166 , F27D1/0009 , F27D11/00 , F27D2007/066 , F27D2009/0016 , G01N27/12
摘要： A vacuum heat treatment furnace comprising a furnace shell, a casing arranged in an inner side of the furnace shell, a heat insulating layer consisting of a thick plate-like alumina-silica series ceramic fiber blanket and a thin plate-like alumina series ceramic material arranged in an inside of the casing, and a heater arranged in a heating room surrounded by the heat insulating layer. A method of and apparatus for measuring a carbon concentration in an atmosphere in a treating room having a reduced pressure, wherein a carbon concentration measuring body is transferred from an external portion of a furnace shell of a heat treatment furnace into the treating room within the furnace shell, the carbon concentration measuring body is reacted with the atmosphere in the treating room for a predetermined time, the carbon concentration measuring body is gradually cooled for a predetermined time, and an amount of carbon in the carbon concentration measuring body is measured in atmospheric pressure at room temperature.
摘要翻译： 一种真空热处理炉，包括炉壳，布置在炉壳内侧的壳体，由厚板状氧化铝 - 二氧化硅系陶瓷纤维毯和薄板状氧化铝系陶瓷材料构成的隔热层 布置在壳体的内部，以及布置在由绝热层包围的加热室中的加热器。 一种用于测量具有减压的处理室中的气氛中的碳浓度的方法和装置，其中将碳浓度测量体从热处理炉的炉壳的外部转移到炉内的处理室中 将碳浓度测定体与处理室内的气氛反应规定时间，将碳浓度测定体逐渐冷却规定时间，在大气压下测定碳浓度测定体的碳量 在室温下。
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公开(公告)号：US5868871A
公开(公告)日：1999-02-09
申请号：US867448
申请日：1997-06-02
申请人： Keiji Yokose , Fumitaka Abukawa , Hidetoshi Juryosawa , Jun Takahashi , Shinichi Takemoto , Hideki Inoue
发明人： Keiji Yokose , Fumitaka Abukawa , Hidetoshi Juryosawa , Jun Takahashi , Shinichi Takemoto , Hideki Inoue
IPC分类号： C21D1/06 , C21D1/10 , C21D1/18 , C21D1/42 , C21D1/74 , C21D1/773 , C21D1/78 , C21D9/00 , C23C8/20 , C23C8/36 , F27B9/02 , C23C8/22
CPC分类号： C23C8/20 , C21D1/78 , C21D9/00 , C21D1/18 , C21D1/42 , C21D2261/00 , C21D9/0037 , Y02P10/253
摘要： Method and apparatus for carburizing, quenching and tempering workpieces, by which the step of carburizing can be incorporated into a machining and manufacturing process to be performed by an on-line machining and manufacturing system as one stage thereof, and by which high-quality treatment or processing can be achieved without occurrences of variation in quality among heat-treated products. In this apparatus, a preheating chamber (2), six carburizing chambers (5a to 5f), a cooling chamber (6), a reheating chamber (7), a quenching chamber (8) are placed around an intermediate chamber (4) having a transport device (12). Further, a high-frequency induction heating technique is used for heating each of major ones of the treatment or processing chambers. Moreover, a plasma carburizing method is performed in the carburizing chambers. Furthermore, workpieces, which are successively carried into this apparatus through a machining and manufacturing line, are assigned and distributed to the chambers, respectively, and are then treated or processed therein. Thus, the process of carburizing, quenching and tempering can be performed without stagnation.
摘要翻译： 用于渗碳，淬火和回火的工件的方法和装置，通过该方法和装置可以将渗碳步骤结合到通过在线加工和制造系统作为其一个阶段进行的加工和制造过程中，并且通过其进行高质量处理 或者可以实现加工，而不会在热处理产品中产生质量变化。 在该装置中，预热室（2），六个渗碳室（5a至5f），冷却室（6），再加热室（7），淬火室（8））围绕中间室（4）放置， 运输装置（12）。 此外，使用高频感应加热技术来加热处理室或处理室中的主要处理室。 此外，在渗碳室中进行等离子体渗碳法。 此外，通过机械加工生产线连续地携带在该装置中的工件被分配并分配到室中，然后在其中进行处理或处理。 因此，可以在不停滞的情况下进行渗碳淬火回火处理。
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公开(公告)号：US06733600B2
公开(公告)日：2004-05-11
申请号：US09907455
申请日：2001-07-18
申请人： Yuichi Heishi , Masahiro Suzuki , Ikuo Tani , Youichi Watanabe , Shunzou Umegaki , Kiyotaka Akimoto , Keiji Yokose
发明人： Yuichi Heishi , Masahiro Suzuki , Ikuo Tani , Youichi Watanabe , Shunzou Umegaki , Kiyotaka Akimoto , Keiji Yokose
IPC分类号： C23C826
摘要： A maraging steel is subjected to the aging to have a hardness of more than 500 Hv. A nitrided case is formed to have a depth that is about 20% to 50% to a ½ thickness of the maraging steel plate. An endless ring for a metal belt is constructed by the above maraging steel. According to methods of manufacturing the maraging steel and the endless ring, the nitrided case having the depth that is 20% to 50% of a distance from a plate surface to a center can be formed by executing an aging to have the hardness of more than 500 Hv, then executing a nitriding in the nitrogen atmosphere to which organic chloride is added.
摘要翻译： 马氏体时效钢经历老化以具有大于500Hv的硬度。 形成氮化壳体的深度为马氏体时效钢板的1/2厚度的约20％至50％。 金属带的环形环由上述马氏体时效钢构成。 根据马氏体结冰钢和环形环的制造方法，可以通过进行老化而形成具有比板表面至中心的距离的20〜50％的深度的氮化壳体，使其硬度大于 500Hv，然后在氮气气氛中进行氮化，向其中加入有机氯化物。
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