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    VACUUM CARBO-NITRIDING METHOD
    5.
    发明公开
    VACUUM CARBO-NITRIDING METHOD 有权
    VAKUUM-CARBONITRIERVERFAHREN

    公开(公告)号：EP1454998A1

    公开(公告)日：2004-09-08

    申请号：EP01274938.8

    申请日：2001-12-13

    申请人： Koyo Thermo Systems Co., Ltd.

    发明人： YAMAGUCHI, Kazuyoshi, KOYO THERMO SYSTEMS CO., LTD

    IPC分类号： C23C8/30 ,  C23C8/34

    CPC分类号： C23C8/30 ,  C23C8/32 ,  C23C8/34

    摘要： A vacuum carbonitriding method includes: performing a vacuum carburizing process on an object to be treated (a workpiece) in a heat treating furnace under reduced pressures by supplying a carburizing gas into the furnace that has been heated to a predetermined carburizing temperature; stopping supply of the carburizing gas while keeping the carburizing temperature so as to diffuse carbon in the workpiece under reduced pressures; and performing a nitriding process on the workpiece by supplying a nitriding gas into the furnace under reduced pressures after lowering the furnace temperature. Required heat treatment qualities such as surface hardness, effective case depth, toughness and the like can be achieved in a short time with reproducibility even in a case of workpiece made of low-grade steel or case-hardened steel.

    摘要翻译： 真空碳氮共渗法包括：在加热到预定的渗碳温度的炉中，通过向渗碳气体供给渗碳气体，在减压下对被处理体（工件）进行真空渗碳处理; 停止渗碳气体的供给，同时保持渗碳温度，以便在减压下使碳在工件中扩散; 并且在降低炉温后，通过在减压下将氮化气体供给到炉内，对工件进行氮化处理。 即使在由低档钢或表面硬化钢制成的工件的情况下，也可以在短时间内实现表面硬度，有效的壳深度，韧性等所需的热处理性能。

    METHOD AND APPARATUS FOR PRODUCING BRIQUETTE FOR METAL RAW MATERIAL
    7.
    发明公开
    METHOD AND APPARATUS FOR PRODUCING BRIQUETTE FOR METAL RAW MATERIAL 有权
    VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON BRIKETTS AUS REZYKLIERTEM METALLROHMATICIAL

    公开(公告)号：EP1808502A1

    公开(公告)日：2007-07-18

    申请号：EP05788102.1

    申请日：2005-09-28

    申请人： Koyo Seiko Co., Ltd. ,  Koyo Thermo Systems Co., Ltd.

    发明人： MATSUDA, Mitsuma ,  NAKAMURA, Toshihide

    IPC分类号： C22B1/248 ,  C22B1/243 ,  F26B15/12

    CPC分类号： C22B1/243 ,  C22B1/24 ,  C22B1/248 ,  F26B15/12 ,  Y02P10/216 ,  Y02P10/234

    摘要： A manufacture method of briquette for use as metal stock is provided which increases the efficiency of drying porous masses so as to shorten a drying time, and which provides a simplified constitution for reducing an installation area of a system and for reducing the running cost and initial cost of the system. The porous masses are formed by compression molding a recyclable material containing metallic powder. The compression molded porous masses are fed into a tubular member, into which hot air is blown for drying the porous masses.

    摘要翻译： 提供了用作金属原料的煤饼的制造方法，其提高了干燥多孔质量的效率，从而缩短了干燥时间，并且提供了简化的构造，用于减少系统的安装面积并降低运行成本和初始 系统成本 通过压缩成型含有金属粉末的可回收材料形成多孔质量块。 压缩成型的多孔质量块被送入管状部件，吹入热空气以干燥多孔质量块。

    HEAT TREATMENT APPARATUS
    10.
    发明公开
    HEAT TREATMENT APPARATUS 审中-公开

    公开(公告)号：EP3333526A1

    公开(公告)日：2018-06-13

    申请号：EP16844004.8

    申请日：2016-06-13

    申请人： Koyo Thermo Systems Co., Ltd.

    发明人： YAMAMOTO,Ryosuke ,  SATO,Manabu ,  NAKATA,Ayaka

    IPC分类号： F27B9/12 ,  C21D1/00 ,  F27B9/02 ,  F27B9/26 ,  F27D3/12

    CPC分类号： C21D9/0062 ,  C21D1/00 ,  C21D9/0056 ,  F27B9/02 ,  F27B9/12 ,  F27B9/26 ,  F27D3/12

    摘要： Provided is a heat treatment apparatus capable of being configured to be more compact.
    A heat treatment apparatus 1 includes a coolant passage defining body 42 to define a coolant passage 48 to supply a coolant to a workpiece 100. The coolant passage defining body 42 includes an upper member 50 and a lower member 40 as a plurality of coolant passage defining members, and is configured so that, by displacing these members 49 and 50 so as to approach each other along an up-down direction Z1 crossing a conveyance direction, the coolant passage 48 is defined in a state housing the workpiece 100. In addition , the coolant passage defining body is configured so that, by displacing the members 49 and 50 described above so as to separate from each other along the up-down direction Z1, the workpiece 100 is allowed to be let into and out of the coolant passage 48 along the conveyance direction A1.