Title:
HIGH FREQUENCY INDUCTION HEATING UPSET JOINING METHOD
Document Type and Number:
Japanese Patent JP2984450
Kind Code:
B2
Abstract:
PURPOSE: To provide a joining method which can obtain stable joining strength in a high speed joining method for rough rolled stock in a continuous hot rolling process and correspond quickly on materials to be joined various in plate width, plate thickness material, etc.
CONSTITUTION: After a part obtained by crop shearing the center of the rear end of a preceding material 1 by a bent edge having a radius R of curvature is abutted to a surface obtained by cutting the entire surface of the tip part of as succeeding material 2 by a straight edge and both end parts 3 in the directions of plate widths of both materials are brought into contact with each other, a high frequency current is energized in induction coils arranged above and below a slit 16 constructed in the middle in the direction of the plate width and an eddy current 15 circulating the citcumference of the slit 16 is generated by making a magnetic flux penetrating the slit in the direction of the plate thickness. Contact parts 3 on both ends in the direction of the plate width are heated and pressure-welded by resistance heating, pressure welded parts 4 are formed by heating and pressure welding in sequence from both ends of the plate width to the direction of the middle part and a pressure welded length 1mm which is not cut off by an rolling in the next stage is obtained. Then, it is sent to the rolling stage by rolling rolls 6 to form the joined part 5 firmly.
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Inventors:
WAKAMOTO IKUO
MORIMOTO KAZUO
TSURUSAKI KAZUYA
IZUMI KYOSHI
HAYASHI KANJI
MORIMOTO KAZUO
TSURUSAKI KAZUYA
IZUMI KYOSHI
HAYASHI KANJI
Application Number:
JP2160892A
Publication Date:
November 29, 1999
Filing Date:
January 13, 1992
Export Citation:
Assignee:
MITSUBISHI JUKOGYO KK
KAWASAKI SEITETSU KK
KAWASAKI SEITETSU KK
International Classes:
B21B1/26; B21B15/00; B23K13/01; B23K20/00; H05B6/10; (IPC1-7): B21B15/00; B21B1/26; B23K13/01; B23K20/00; H05B6/10
Domestic Patent References:
| JP489110A | ||||
| JP489109A | ||||
| JP489120A | ||||
| JP4158905A |
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)