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21. 发明专利

JP5410652B2 Heat-treating furnace 有权
公开(公告)号：JP5410652B2
公开(公告)日：2014-02-05
申请号：JP2007046169
申请日：2007-02-26
申请人： Dowaサーモテック株式会社
发明人：崇櫻井 , 浩次阿部 , 宏次堀内
IPC分类号： F27D1/18 , C21D1/06 , C21D1/76 , C23C8/20 , F27B9/02 , F27B9/30

22. 发明专利

JP2014012896A Hard film covering member 有权
标题翻译：硬膜覆盖件
公开(公告)号：JP2014012896A
公开(公告)日：2014-01-23
申请号：JP2013168432
申请日：2013-08-14
申请人： Dowa Thermotech Kk , Dowaサーモテック株式会社
发明人： SHIMIZU YUICHIRO , TOISHI MITSUTERU
IPC分类号： C23C14/08 , B29C33/38 , C23C14/58
摘要： PROBLEM TO BE SOLVED: To provide a hard film covering member having not only excellent mechanical strength such as wear resistance and adhesiveness, but also excellent chemical stability such as resistance to oxidation at high temperatures, alkali resistance, and releasability.SOLUTION: A hard film covering member comprises: a substrate; and a nitrogen containing chrome film with thickness of 1-30 μm, and a chromium oxide film with thickness of 0.1-3 μm, which are formed on the substrate in this order.
摘要翻译：要解决的问题：提供一种不仅具有优异的机械强度如耐磨性和粘合性，而且还具有优异的化学稳定性（例如耐高温氧化，耐碱性和脱模性）的硬膜覆盖件。解决方案：硬膜覆盖部件包括：基板; 和厚度为1-30μm的含氮铬膜和厚度为0.1-3μm的氧化铬膜，依次形成在基板上。

23. 发明专利

JP2013204872A Heat treatment furnace 有权
标题翻译：热处理炉
公开(公告)号：JP2013204872A
公开(公告)日：2013-10-07
申请号：JP2012072698
申请日：2012-03-28
申请人： Dowa Thermotech Kk , Dowaサーモテック株式会社
发明人： FUJITA TAKAHIRO
IPC分类号： F27B17/00 , C21D1/00 , C21D1/06 , C23C8/20 , C23C8/24
摘要： PROBLEM TO BE SOLVED: To provide a heat treatment furnace that uses, as a main heat insulator, a press compression-molded article of ceramic fine particles which are brittle and have large heat shrinkability, but have superior heat insulating properties.SOLUTION: There is provided a heat treatment furnace that has a floor portion and both sidewall portions which are constituted by stacking a heat-shrinkable heat insulator and a heat-expandable heat insulator formed of press compression molded articles of ceramic fine particles by alternately stacking, and also has a ceiling portion formed by alternately stacking heat insulators similar to the above heat insulators on both the sidewall upper portions. Preferably, each heat-expandable heat insulator has a larger coefficient of thermal expansion in a thickness direction than a coefficient of thermal expansion in a horizontal direction. More preferably, a sum of absolute values of coefficients of thermal expansion of the heat-expandable heat insulators and heat-shrinkable heat insulators in the horizontal direction is 5% or less.
摘要翻译：要解决的问题：提供一种热处理炉，其使用脆性并且具有大的热收缩性但具有优异的隔热性的陶瓷微粒的压制成型品作为主要的隔热材料。解决方案：存在提供了一种热处理炉，其具有通过交替堆叠而由可热收缩绝热体和由陶瓷微粒的压制成形体形成的热膨胀性隔热材料构成的底板部和两个侧壁部，并且还具有通过在两个侧壁上部交替堆叠类似于上述绝热体的隔热件形成的顶部。优选地，每个热膨胀隔热件在厚度方向上的热膨胀系数比水平方向的热膨胀系数大。更优选地，热膨胀性绝热体和热收缩绝热体的水平方向的热膨胀系数的绝对值之和为5％以下。

24. 发明专利

JP5225634B2 Heat treatment method and heat treatment equipment 有权
公开(公告)号：JP5225634B2
公开(公告)日：2013-07-03
申请号：JP2007211207
申请日：2007-08-14
申请人： Dowaサーモテック株式会社
发明人：崇櫻井 , 拓宏野田 , 将和岩本
IPC分类号： C21D1/06 , C21D1/18 , C21D1/63 , C21D1/74 , C21D1/76 , C23C8/22 , F27B9/02 , F27B9/04 , F27B9/12 , F27D19/00

25. 发明专利

JP2013057107A Heat treatment method and heat treatment apparatus 有权
标题翻译：热处理方法和热处理装置
公开(公告)号：JP2013057107A
公开(公告)日：2013-03-28
申请号：JP2011196664
申请日：2011-09-09
申请人： Dowa Thermotech Kk , Dowaサーモテック株式会社
发明人： FUJITA TAKAHIRO
IPC分类号： C21D1/74 , C21D1/06 , C21D1/63 , C23C8/22 , F27D7/06
摘要： PROBLEM TO BE SOLVED: To provide a heat treatment method by which atmosphere in a heat treatment chamber is not harmed due to atmospheric air inflowing from a quenching chamber.SOLUTION: There is provided the heat treatment method by which a treatment object 2 heat-treated under non reduced pressure in a heat treatment chamber 3 is cooled in the quenching chamber 4. In the method, when quenched treatment object 2 is taken out from the quenching chamber 4, the communication for introducing gas from the heat treatment chamber 3 to the quenching chamber 4 is intercepted. As a result, the air does not inflow from the quenching chamber 4 side to the heat treatment chamber 3 side, so that the atmosphere in the heat treatment chamber 3 is not harmed.
摘要翻译：要解决的问题：提供一种热处理方法，由于大气从淬火室流入，热处理室中的气氛不会受到伤害。解决方案：提供了一种热处理方法，其中在热处理室3中在非减压下热处理的处理对象2在淬火室4中被冷却。在该方法中，当采用淬火处理对象2时从淬火室4出来，截留从热处理室3向淬火室4引入气体的连通状态。结果，空气不会从淬火室4侧流入热处理室3侧，从而不会损害热处理室3内的气氛。版权所有（C）2013，JPO＆INPIT

26. 发明专利

JP5167553B2 Nitriding treatment method and a nitriding treatment apparatus 有权
公开(公告)号：JP5167553B2
公开(公告)日：2013-03-21
申请号：JP2005328285
申请日：2005-11-14
申请人： Dowaサーモテック株式会社
发明人：匠吾成田 , 敬二横瀬
IPC分类号： C23C8/26 , C21D1/06 , C21D1/74 , C21D1/76 , C22C38/00 , C22C38/44 , C23C8/32 , F27D7/06 , F27D19/00

27. 发明专利

JP2012207240A Gas-quenching method 有权
标题翻译：气体检测方法
公开(公告)号：JP2012207240A
公开(公告)日：2012-10-25
申请号：JP2011071425
申请日：2011-03-29
申请人： Dowa Thermotech Kk , Dowaサーモテック株式会社
发明人： ABUKAWA FUMITAKA , ABE KOJI , TORASAWA EIJU
IPC分类号： C21D1/18 , C21D1/767 , C21D1/773
摘要： PROBLEM TO BE SOLVED: To provide a gas-quenching method with which a quenched product having high hardness on the surface and excellent toughness in the inner part (core part) can be obtained.SOLUTION: The gas-quenching method is provided with a first cooling step, in which the core part of a work (quenching product) is gas-cooled at a first cooling speed from the quenched temperature to a first temperature zone of the higher temperature than Ms point of the core part in the work, and thereafter, a second cooling step, in which the work is gas-cooled with a second cooling speed of smaller speed than the first cooling speed, in the lower temperature zone than the first temperature zone. Then, the first cooling speed and the second cooling speed are controlled so that the surface of the work after quenching may become a martensitic structure, and the effective hardened layer depth in the work may be larger than the depth in the case of gas-cooling the work with the second cooling speed from the quenched temperature to the room temperature, and may become the same or smaller in the case of cooling the work with the first cooling speed from the quenched temperature to the room temperature and further, the hardness of the core part in the work may become the same grade as in the case of gas-cooling the work with the second cooling speed from the quenched temperature to the room temperature.
摘要翻译：要解决的问题：提供一种气体淬火方法，可以获得表面硬度高的淬火产品，并且可以获得内部（核心部分）的优异的韧性。解决方案：气体淬火方法具有第一冷却步骤，其中工件的核心部分（淬火产物）以第一冷却速度从淬火温度到第一冷却速度被冷却比工件中的芯部的Ms点温度高，之后，在比第一冷却速度小的第二冷却速度比第一冷却速度小的第二冷却速度的第二冷却步骤中，第一温区。然后，控制第一冷却速度和第二冷却速度，使得淬火后的工件的表面可能变成马氏体结构，并且工件中有效的硬化层深度可能大于气体冷却的深度第二冷却速度从淬火温度到室温的工作，并且在第一冷却速度从骤冷温度到室温的冷却工作的情况下可以变得相同或更小，此外，工作中的核心部分可能会变得与第二冷却速度从骤冷温度到室温的工作气体冷却的情况相同。版权所有（C）2013，JPO＆INPIT

28. 发明专利

JP2012207239A Quenching method and quenching apparatus 有权
标题翻译：淬火方法和淬火装置
公开(公告)号：JP2012207239A
公开(公告)日：2012-10-25
申请号：JP2011071394
申请日：2011-03-29
申请人： Dowa Thermotech Kk , Dowaサーモテック株式会社
发明人： TORASAWA EIJU
IPC分类号： C21D1/18 , C21D1/63
摘要： PROBLEM TO BE SOLVED: To provide a quenching method which, when used for oil-quenching a steel member, can produce a quenched work having a high effective ratio (effective hardened depth/entire carburization depth) and superior toughness in the inside (core) thereof.SOLUTION: The quenching method comprises a first cooling step of cooling a work from a quenching temperature to a first temperature region in which the temperature of the core of the work is higher than the Ms point of the core of the work at a first cooling rate, and a second step of subsequently cooling the work in a temperature region lower than the first temperature region at a second cooling rate lower than the first cooling rate, wherein the first cooling rate and the second cooling rate are controlled so that the surface of the work becomes a martensite structure after quenching, that the effective hardened depth of the work is larger than the depth generated when the work is cooled from the quenching temperature to room temperature at the second cooling rate or is equal to or smaller than the depth generated when the work is cooled from the quenching temperature of the work to room temperature at the first temperature, and that the hardness of the core of the work is equal to the hardness generated when the work is cooled from the quenching temperature of the work to room temperature at the second cooling rate.
摘要翻译：要解决的问题：提供一种淬火方法，当用于对钢构件进行油淬时，可以生产具有高有效比（有效硬化深度/整个渗碳深度）和在内部具有优异韧性的淬火工件（核心）。解决方案：淬火方法包括将工件从淬火温度冷却到第一温度区域的第一冷却步骤，其中工件的芯的温度高于工件的芯的Ms点高于第一冷却速度，以及第二步骤，其以比第一冷却速度低的第二冷却速度随后在低于第一温度区域的温度区域中冷却工件，其中控制第一冷却速率和第二冷却速率，使得工件的表面在淬火后成为马氏体结构，工作的有效硬化深度大于当工件以第二冷却速度从淬火温度冷却至室温时产生的深度等于或小于当工件在第一温度从工件的淬火温度冷却到室温时产生的深度，并且工件的芯的硬度等于t o当工件从工件的淬火温度以第二冷却速度冷却到室温时产生的硬度。版权所有（C）2013，JPO＆INPIT

29. 发明专利

JP4982763B2 Continuous heat treatment furnace 有权
公开(公告)号：JP4982763B2
公开(公告)日：2012-07-25
申请号：JP2005286133
申请日：2005-09-30
申请人： Dowaサーモテック株式会社
发明人：健一北本 , 亘竹内 , 一良藤田 , 文隆虻川 , 広良鈴木 , 淳高橋
IPC分类号： F27B9/34 , C21D1/06 , F27B9/24 , F27D1/00 , F27D1/18

30. 发明专利

JP4982762B2 Heat-treating furnace 有权
公开(公告)号：JP4982762B2
公开(公告)日：2012-07-25
申请号：JP2005286132
申请日：2005-09-30
申请人： Dowaサーモテック株式会社
发明人：健一北本 , 亘竹内 , 一良藤田 , 文隆虻川 , 広良鈴木 , 淳高橋
IPC分类号： F27B9/34 , C21D1/34 , F27B9/24 , F27B9/36 , F27D1/00 , F27D3/02

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