公开(公告)号：US11242592B2

公开(公告)日：2022-02-08

申请号：US16324302

申请日：2017-09-27

申请人： DOWA THERMOTECH CO., LTD.

发明人： Katsushige Shimizu ,  Hokuto Hatanaka ,  Bin Sun ,  Masakazu Kawahara

IPC分类号： C23C8/26 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/00 ,  C21D1/76 ,  C23C8/02 ,  F27B9/04 ,  C21D9/32 ,  C23C8/80 ,  C21D1/06 ,  C21D11/00 ,  F27B9/02

摘要： A continuous nitriding treatment furnace includes a nitriding chamber, a heater, a first nitriding zone, and a second nitriding zone lower in atmosphere gas temperature than the first nitriding zone by 25° C. to 150° C., the continuous nitriding treatment furnace being configured such that an atmosphere gas in the first nitriding zone flows into the second nitriding zone and being configured to execute a nitriding treatment that forms an iron nitride compound layer composed of an ε phase or of the ε phase and a γ′ phase on a surface of the steel member in the first nitriding zone and precipitates the γ′ phase in the iron nitride compound layer in the second nitriding zone.

公开(公告)号：US20150275346A1

公开(公告)日：2015-10-01

申请号：US14229111

申请日：2014-03-28

申请人： Dowa Thermotech Co., Ltd.

发明人： Hokuto Hatanaka

IPC分类号： C23C8/80 ,  C21D1/18 ,  C21D1/62 ,  C23C8/20

CPC分类号： C23C8/80 ,  C21D1/06 ,  C21D1/18 ,  C21D1/62 ,  C21D1/74 ,  C21D1/773 ,  C21D9/32 ,  C23C8/20 ,  C23C8/22 ,  F27D7/06 ,  F27D2099/0015 ,  Y02P10/253

摘要： The present invention provides a heat treatment apparatus for carrying out heat treatment for a circular workpiece. The heat treatment apparatus includes a treatment room configured to carry out a predetermined treatment for the workpiece, a transportation mechanism configured to transport the workpiece into the treatment room and out of the treatment room, and a mounting table on which the workpiece transported into the treatment room is mounted. The transportation mechanism is provided with a transportation arm which mounts and transports the workpiece. The transportation arm is provided with at least three transport support pins which support the workpiece when the workpiece is transported, and the mounting table is provided with at least three mounting table support pins which support the workpiece.

摘要翻译： 本发明提供一种用于对圆形工件进行热处理的热处理设备。 所述热处理装置具有：被配置为对所述工件进行预定处理的处理室;被配置为将所述工件输送到所述处理室并离开所述处理室的输送机构;以及安装台，所述工件输送到所述处理室 房间安装。 输送机构设置有安装并输送工件的输送臂。 输送臂设置有至少三个输送支撑销，其在工件被输送时支撑工件，并且安装台设置有至少三个支撑工件的安装台支撑销。