公开(公告)号：US20040239019A1

公开(公告)日：2004-12-02

申请号：US10708737

申请日：2004-03-22

Applicant: CHUGAI RO CO., LTD.

Inventor： Yoshikazu SHIMOSATO ,  Seiji YOSHIMOTO

IPC: C21D001/773

CPC classification number: F27B9/02 ,  C21D1/773 ,  C21D9/0062 ,  C23C8/22 ,  F27B9/028 ,  F27B9/04 ,  F27B9/045

Abstract: A continuous vacuum carburizing furnace of the invention includes: a heating chamber for heating a workpiece under a atmospheric pressure; a first conditioning chamber in which the pressure is reduced from the atmospheric pressure after the receipt of the workpiece from the heating chamber; a carburizing/diffusing chamber receiving plural workpieces from the first conditioning chamber and conducting plural cycles of carburizing and diffusing processes under the reduced pressure; a second conditioning chamber in which the reduced pressure is returned to the atmospheric pressure after the receipt of the workpiece treated in the carburizing/diffusing chamber; and a cooling chamber for cooling the workpiece introduced from the second conditioning chamber under the atmospheric pressure, the furnace further comprising a door member disposed between a respective adjoining pair of the above chambers, the door member opened/closed only when the workpiece is transported from one chamber to another.

Abstract translation: 本发明的连续真空渗碳炉包括：加热室，用于在大气压下加热工件; 第一调节室，其中在从加热室接收到工件之后，压力从大气压力减小; 渗碳/扩散室，从第一调节室接收多个工件，并在减压下进行多个渗碳扩散过程; 第二调节室，其中在渗碳/扩散室中处理的工件接收之后，减压返回到大气压; 以及冷却室，用于在大气压力下冷却从第二调节室引入的工件，炉还包括设置在相邻的一对上述室之间的门构件，门构件仅在工件从 一个房间到另一个房间。