JPS5592207A - Production of seamless metal pipe - Google Patents

Production of seamless metal pipe

Info

Publication number
JPS5592207A
JPS5592207A JP16196978A JP16196978A JPS5592207A JP S5592207 A JPS5592207 A JP S5592207A JP 16196978 A JP16196978 A JP 16196978A JP 16196978 A JP16196978 A JP 16196978A JP S5592207 A JPS5592207 A JP S5592207A
Authority
JP
Japan
Prior art keywords
pipe
mandrel
rolling
rolls
same direction
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
JP16196978A
Other languages
Japanese (ja)
Other versions
JPS5913923B2 (en
Inventor
Seishiro Yoshihara
Hirokichi Higashiyama
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 Steel Corp
Original Assignee
Nippon Steel Corp
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 Steel Corp filed Critical Nippon Steel Corp
Priority to JP16196978A priority Critical patent/JPS5913923B2/en
Priority to US06/105,746 priority patent/US4318294A/en
Priority to FR7931939A priority patent/FR2445187A1/en
Priority to DE19792952647 priority patent/DE2952647A1/en
Priority to IT28473/79A priority patent/IT1127783B/en
Publication of JPS5592207A publication Critical patent/JPS5592207A/en
Publication of JPS5913923B2 publication Critical patent/JPS5913923B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Metal Extraction Processes (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

PURPOSE: To produce the captioned product of superior quality at good efficiency and low cost by doing such things as giving spiral motion to the rolling material with the rolls which rotate and drive a roll set around the pass line in the same direction with its rotating axis being twisted in the same direction, at the time of inserting a mandrel into a bottomed circular pipe and rolling the pipe.
CONSTITUTION: A mandrel 4 used for piercing is inserted into a bottomed circular pipe 3' in the form at the completing of piercing and the pipe is rolled with its bottom part 3" as forward. In this second process, spiral motion is given to the rolling material by the rolls which rotate and drive a roll set of two or more rolls around the pass line and in the same direction with its rotation being twisted in the same direction and rolling is accomplished between the rolls and mandrel or plug. At this time, the mandrel exposed part is kept pushed by a pushing device 7 until the plug 4' passes the B-B section of the rolling rolls 8. Thereby, the bite of the pipe may be reduced, damaging of the portion near the bottom through detaching from the mandrel and receiving thickness screw-down prevented, and further rolling time reduced through increased forward speed of the pipe.
COPYRIGHT: (C)1980,JPO&Japio
JP16196978A 1978-12-29 1978-12-29 Manufacturing method of seamless metal pipe Expired JPS5913923B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16196978A JPS5913923B2 (en) 1978-12-29 1978-12-29 Manufacturing method of seamless metal pipe
US06/105,746 US4318294A (en) 1978-12-29 1979-12-19 Method of manufacturing seamless metal pipes and tubes
FR7931939A FR2445187A1 (en) 1978-12-29 1979-12-28 PROCESS FOR THE MANUFACTURE OF SOLDER-FREE METAL PIPES AND TUBES
DE19792952647 DE2952647A1 (en) 1978-12-29 1979-12-28 METHOD FOR PRODUCING SEAMLESS METAL TUBES
IT28473/79A IT1127783B (en) 1978-12-29 1979-12-31 METHOD FOR THE MANUFACTURE OF SEAMLESS METAL PIPES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16196978A JPS5913923B2 (en) 1978-12-29 1978-12-29 Manufacturing method of seamless metal pipe

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP22213283A Division JPS59130608A (en) 1983-11-28 1983-11-28 Continuous rolling method of bottomed pipe

Publications (2)

Publication Number Publication Date
JPS5592207A true JPS5592207A (en) 1980-07-12
JPS5913923B2 JPS5913923B2 (en) 1984-04-02

Family

ID=15745513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16196978A Expired JPS5913923B2 (en) 1978-12-29 1978-12-29 Manufacturing method of seamless metal pipe

Country Status (1)

Country Link
JP (1) JPS5913923B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130707A (en) * 1981-02-03 1982-08-13 Sumitomo Metal Ind Ltd Method and device for producing seamless pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130707A (en) * 1981-02-03 1982-08-13 Sumitomo Metal Ind Ltd Method and device for producing seamless pipe

Also Published As

Publication number Publication date
JPS5913923B2 (en) 1984-04-02

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