METHOD OF AND APPARATUS FOR JOINING METAL PIECES

Title:

METHOD OF AND APPARATUS FOR JOINING METAL PIECES

Document Type and Number:

WIPO Patent Application WO/1995/016525

Kind Code:

A1

Abstract:

According to the present invention, a rear end portion of a preceding metal piece and a front end portion of a subsequent metal piece are heated, pressed and joined prior to the finishing hot rolling thereof, by placing the two metal pieces so that the rear end portion of the preceding metal piece and the front end portion of the subsequent metal piece are spaced from and opposed to each other, heating the metal pieces with an alternating field, which passes through the metal pieces in the direction of the thickness thereof, generated in the opposed surface-side end regions of the metal pieces, and partially generating an alternating field, which extends in the direction opposite to the direction in which the previously-mentioned alternating field extends, in the opposed surface-side end regions which agree with either metal piece-existing regions or regions outside of the widthwise ends of the metal pieces, whereby the whole of widthwise parts of the opposed surface-side end regions of the metal pieces are heated uniformly to enable the two metal pieces to be joined reliably.

Inventors:

Isoyama
Shigeru, Hirabayashi
Takeshi, Nikaido
Hideyuki, Amagasa
Toshiaki, Tamura
Nozomu, Yamasaki
Takahiro, Osada
Masashi, Yamada
Hirosuke, Takechi
Toshisada, Takashima
Norio, Nitta
Junzo, Amanuma
Shuji, Hayashi
Kanji, Kuroda
Akio, Mito
Yoshiki, Miyamoto

Application Number:

PCT/JP1994/002113

Publication Date:

June 22, 1995

Filing Date:

December 15, 1994

Export Citation:

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Assignee:

KAWASAKI STEEL CO (JP)
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI ELECTRIC CORP

International Classes:

B21B15/00; B23K13/01; B23K13/02; B21B1/26; (IPC1-7): B21B1/26; B21B15/00

Foreign References:

JPH0489108A	1992-03-23
JPH05192775A	1993-08-03
JPH0724506A	1995-01-27

Other References: