公开(公告)号：US20180155816A1

公开(公告)日：2018-06-07

申请号：US15569988

申请日：2016-04-27

Applicant: KEIO UNIVERSITY ,  NETUREN CO., LTD.

Inventor： Jun KOMOTORI ,  Shumpei OTA ,  Kengo FUKAZAWA ,  Yoshitaka MISAKA ,  Kazuhiro KAWASAKI

IPC: C23C8/24

CPC classification number: C23C8/24 ,  C21D1/06 ,  C23C8/02

Abstract: An object of the present invention is to provide, as a simple method, a surface nitriding treatment method of a titanium material, forming a hardened nitrided layer excellent in abrasion resistance on the surface of a titanium material in a shorter time. In order to achieve the object, the present invention adopts a surface nitriding treatment method of a titanium material, wherein a hardened nitrided layer is formed on the surface of the titanium material, by blowing nitrogen gas at a flow rate of 10 L/min or more to the surface of the titanium material while the titanium material is being heated to 800° C. to 1000° C. in an inert gas atmosphere.

公开(公告)号：US20160234885A1

公开(公告)日：2016-08-11

申请号：US15022721

申请日：2014-09-17

Applicant: NETUREN CO., LTD.

Inventor： Hidehiro YASUTAKE ,  Fumiaki IKUTA ,  Kengo FUKAZAWA

IPC: H05B6/04 ,  H05B6/44 ,  H05B6/36

CPC classification number: H05B6/04 ,  H05B6/102 ,  H05B6/36 ,  H05B6/40 ,  H05B6/44

Abstract: An induction heating coil (3) has a primary coil (4) to which electric power is supplied and a ring-shaped secondary coil (5) forming a closed circuit. The primary coil (4) has a base-side portion that covers an outer periphery of the secondary coil (5) and a distal-side portion extending from the base-side portion in the center axis direction of the secondary coil (5) in a state in which the base-side portion covers the secondary coil (5). The opening width of the base-side portion is greater than the opening width of the distal-side portion. The secondary coil (5) is provided such that it can be inserted into and removed from the inside of the primary coil (4) from the base-side portion of the primary coil (4).

Abstract translation: 感应加热线圈（3）具有供给电力的初级线圈（4）和形成闭路的环状次级线圈（5）。 初级线圈（4）具有覆盖次级线圈（5）的外周的基部侧部分和从次侧线圈（5）的中心轴线方向从基部侧延伸的前端部， 基部侧覆盖次级线圈（5）的状态。 基部侧部的开口宽度大于前端部的开口宽度。 次级线圈（5）被设置成能够从初级线圈（4）的基部侧插入到初级线圈（4）的内部并从其移除。