JPS561283A - Production of electric welded steel tube - Google Patents

Production of electric welded steel tube

Info

Publication number
JPS561283A
JPS561283A JP7743979A JP7743979A JPS561283A JP S561283 A JPS561283 A JP S561283A JP 7743979 A JP7743979 A JP 7743979A JP 7743979 A JP7743979 A JP 7743979A JP S561283 A JPS561283 A JP S561283A
Authority
JP
Japan
Prior art keywords
side edges
strip material
pressure
steel tube
steel strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP7743979A
Other languages
Japanese (ja)
Other versions
JPS5739877B2 (en
Inventor
Shosaku Matsukawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON PIPE SEIZO KK
NIPPON PIPE SEIZOU KK
Original Assignee
NIPPON PIPE SEIZO KK
NIPPON PIPE SEIZOU KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NIPPON PIPE SEIZO KK, NIPPON PIPE SEIZOU KK filed Critical NIPPON PIPE SEIZO KK
Priority to JP7743979A priority Critical patent/JPS561283A/en
Publication of JPS561283A publication Critical patent/JPS561283A/en
Publication of JPS5739877B2 publication Critical patent/JPS5739877B2/ja
Granted legal-status Critical Current

Links

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  • General Induction Heating (AREA)

Abstract

PURPOSE: To obtain the electric welded steel tube of high pressing strength by beforehand pressing and smoothing the outside beads of the steel tube by the pressure roll having the curved face conforming to the outside diameter shape of the steel tube at the pressure-welding under heating of both side edges of a steel strip material.
CONSTITUTION: While e.g. a steel strip material 1 is being transferred in the X direction, both side edges of the steel strip material 1 are heated by an induction coil 7 and both side edges are bonded at the (c) point and pressure-welded between (c)W(e). Right after the outside surface 3 of a high temperature is begun to be formed between (c)W(e), it is pressed by a pressure roll 9 to press and eliminate beads 3. At this time the opening angle α of both side edges of the steel strip material 1 with respect to the advance axis direct at the contact point (c), the amount of drawing at the contact points (c) and (d) and the diameter of the pressure roll 9 at the (e) point are maintained at proper relations. As a result of this, the metal flow becomes gentle and becomes t1', t4', t2', t3' and the thickness near the beads is reduced. The distance between the axial centers between the pressure rolls 9 and 10 is preferably l≥0.
COPYRIGHT: (C)1981,JPO&Japio
JP7743979A 1979-06-19 1979-06-19 Production of electric welded steel tube Granted JPS561283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7743979A JPS561283A (en) 1979-06-19 1979-06-19 Production of electric welded steel tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7743979A JPS561283A (en) 1979-06-19 1979-06-19 Production of electric welded steel tube

Publications (2)

Publication Number Publication Date
JPS561283A true JPS561283A (en) 1981-01-08
JPS5739877B2 JPS5739877B2 (en) 1982-08-24

Family

ID=13634046

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7743979A Granted JPS561283A (en) 1979-06-19 1979-06-19 Production of electric welded steel tube

Country Status (1)

Country Link
JP (1) JPS561283A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05212555A (en) * 1992-01-31 1993-08-24 Nkk Corp Resistance seam welding equipment
WO2020152789A1 (en) * 2019-01-22 2020-07-30 日本製鉄株式会社 Steel plate, butt-welded member, hot-pressed molding, steel tube, hollow quench-formed molding, and steel plate production method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939517U (en) * 1982-09-06 1984-03-13 トヨタ自動車株式会社 Automotive antenna holding device
JPS5952706U (en) * 1982-09-29 1984-04-06 いすゞ自動車株式会社 Vehicle rod antenna storage device
JPS6140019U (en) * 1984-08-17 1986-03-13 株式会社ヨコオ automotive antenna

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05212555A (en) * 1992-01-31 1993-08-24 Nkk Corp Resistance seam welding equipment
WO2020152789A1 (en) * 2019-01-22 2020-07-30 日本製鉄株式会社 Steel plate, butt-welded member, hot-pressed molding, steel tube, hollow quench-formed molding, and steel plate production method
WO2020152887A1 (en) * 2019-01-22 2020-07-30 日本製鉄株式会社 Steel sheet, tailored blank, hot-press molded article, steel pipe, hollow quenched molded article, and method for producing steel sheet

Also Published As

Publication number Publication date
JPS5739877B2 (en) 1982-08-24

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