Title:
プラズマ切断装置及びプラズマ切断方法
Document Type and Number:
Japanese Patent JP6785177
Kind Code:
B2
Abstract:
To extend a service life of an electrode of a plasma torch.SOLUTION: A plasma arc cutting device 1 comprises: a plasma torch 10 having an electrode 11; a power supply unit 20 which supplies DC current between the electrode 11 and a cut material W in order to generate plasma arc P between the electrode 11 and the cut material W, and can overlap AC current on DC current; and a controller 30 for controlling the power supply unit 20. The controller 30 so controls the power supply unit 20 that when cutting the cut material W having a plate thickness of 6 mm or more, AC current whose difference between a maximum value and a minimum value is not less than 25% and not more than 40% of DC current is overlapped on DC current.SELECTED DRAWING: Figure 1
Inventors:
Naoya Aono
Yoshimi Sano
Fukada Yoshio
Daisuke Ihara
Yoshimi Sano
Fukada Yoshio
Daisuke Ihara
Application Number:
JP2017065928A
Publication Date:
November 18, 2020
Filing Date:
March 29, 2017
Export Citation:
Assignee:
Nissan tanaka Co., Ltd.
International Classes:
B23K10/00
Domestic Patent References:
| JP2819393B2 | ||||
| JP61262464A | ||||
| JP839256A |
Foreign References:
| US20120199562 |
Attorney, Agent or Firm:
Shiga International Patent Office
Masatake Shiga
Fumihiro Hosokawa
Tetsuo Yamazaki
Masatake Shiga
Fumihiro Hosokawa
Tetsuo Yamazaki