Method and apparatus for joining metal pieces using induction heating
US6262402A · kind A · utility
Assignee
Inventors
- Shigeru Isoyama
- Takeshi Hirabayashi
- Hideyuki Nikaido
- Toshiaki Amagasa
- Nozomu Tamura
- Takahiro Yamasaki
- Masashi Osada
- Hirosuke Yamada
- Toshisada Takechi
- Norio Takashima
- Junzo Nitta
- Shuji Amanuma
- Kanji Hayashi
- Akio Kuroda
- Yoshiki Mito
- Kunio Miyamoto
- Kazuo Morimoto
- Ikuo Wakamoto
- Kazuya Tsurusaki
- Hideo Sakamoto
- Michio Hashimoto
- Hiroyuki Nakano
- Toshinobu Eguchi
- Fumihiro Maeda
Key dates
| Filing date | Jul 12, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Jul 12, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/18
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
According to the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickness direction thereof is generated in an end region on opposed faces of the respective metal pieces to perform heating. Another alternating magnetic field whose direction is reverse with respect to that of the former alternating magnetic field is partially generated in the end region on the opposed faces of the metal pieces and in either a region where the metal pieces exist or a region outside width ends of the metal pieces. This assures a uniform heating of the end region on the opposed faces of the metal pieces over their full width to reliably join the both metal pieces to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.