JPS57103714A - Manufacture of seamless steel pipe - Google Patents

Manufacture of seamless steel pipe

Info

Publication number
JPS57103714A
JPS57103714A JP17881580A JP17881580A JPS57103714A JP S57103714 A JPS57103714 A JP S57103714A JP 17881580 A JP17881580 A JP 17881580A JP 17881580 A JP17881580 A JP 17881580A JP S57103714 A JPS57103714 A JP S57103714A
Authority
JP
Japan
Prior art keywords
mandrel
stretch ratio
rolling
reduction
billet
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
JP17881580A
Other languages
Japanese (ja)
Other versions
JPS6035206B2 (en
Inventor
Masamutsu Numano
Yutaka Mihara
Shinji Akita
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP17881580A priority Critical patent/JPS6035206B2/en
Priority to GB8137552A priority patent/GB2089702B/en
Priority to DE19813149646 priority patent/DE3149646A1/en
Priority to CA000392402A priority patent/CA1179170A/en
Priority to FR8123592A priority patent/FR2496505B1/en
Priority to IT25652/81A priority patent/IT1142117B/en
Publication of JPS57103714A publication Critical patent/JPS57103714A/en
Publication of JPS6035206B2 publication Critical patent/JPS6035206B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To efficiently manufacture a product of highly accurate dimension, by pierce-rolling a heated blank billet by a special stretch ratio, and giving it a high outer-dia. reduction by a sizer after rolling it by a mandrel rolling and mill rolling.
CONSTITUTION: A blank billet 2a, heated by a heating furnace 1, is formed into a hollow blank pipe 2b by a 2-rolls mannesmann piercer 3 ; the billet 2a is rolled at ≤3.0 stretch ratio at this time. Next, the pipe 2b is sent to a 3-roll mandrel elongater 4 to be performed a roll forming of approximately 1.5W1.8 stretch ratio by a mandrel bar 5, and further, is sent to a mandrel-bar restraining type continuous rolling mill 6 to be rolled at about 5 stretch ratio. Next, a blank pipe 2c, from a mandrel lever 7, is given a high outer-dia. reduction by a high reduction sizer 8 and stretched at about 1.1W1.3 stretch ratio. By this process steel pipes of wide ranged dimensional classes from the same dimensional blanks are manufactured.
COPYRIGHT: (C)1982,JPO&Japio
JP17881580A 1980-12-19 1980-12-19 Seamless steel pipe manufacturing method Expired JPS6035206B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP17881580A JPS6035206B2 (en) 1980-12-19 1980-12-19 Seamless steel pipe manufacturing method
GB8137552A GB2089702B (en) 1980-12-19 1981-12-11 Method of manufacturing seamless steel pipes
DE19813149646 DE3149646A1 (en) 1980-12-19 1981-12-15 Method for the production of seamless steel tube
CA000392402A CA1179170A (en) 1980-12-19 1981-12-16 Method of manufacturing seamless steel pipes
FR8123592A FR2496505B1 (en) 1980-12-19 1981-12-17 METHOD FOR MANUFACTURING SOLDERLESS STEEL TUBES
IT25652/81A IT1142117B (en) 1980-12-19 1981-12-17 METHOD FOR THE MANUFACTURE OF STEEL PIPES WITHOUT WELDING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17881580A JPS6035206B2 (en) 1980-12-19 1980-12-19 Seamless steel pipe manufacturing method

Publications (2)

Publication Number Publication Date
JPS57103714A true JPS57103714A (en) 1982-06-28
JPS6035206B2 JPS6035206B2 (en) 1985-08-13

Family

ID=16055138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17881580A Expired JPS6035206B2 (en) 1980-12-19 1980-12-19 Seamless steel pipe manufacturing method

Country Status (1)

Country Link
JP (1) JPS6035206B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010146546A1 (en) * 2009-06-19 2010-12-23 Sms Innse Spa Tube rolling plant
WO2011083367A1 (en) * 2010-01-05 2011-07-14 Sms Innse Spa Tube rolling plant
ITMI20100113A1 (en) * 2010-01-28 2011-07-29 Sms Innse Spa PLANT FOR TUBE ROLLING.
ITMI20100666A1 (en) * 2010-04-19 2011-10-20 Sms Innse Spa PLANT FOR TUBE ROLLING.
US8065901B2 (en) * 2006-03-28 2011-11-29 Sumitomo Metal Industries, Ltd. Mandrel bar for high-alloy rolling, method for surface treating a mandrel bar, method for producing mandrel bar, and method for operating seamless pipe mill
CN103071679A (en) * 2011-10-25 2013-05-01 都江堰市鑫奥岩土锚固材料有限公司 One-step forming technology of hollow anchor rod

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8065901B2 (en) * 2006-03-28 2011-11-29 Sumitomo Metal Industries, Ltd. Mandrel bar for high-alloy rolling, method for surface treating a mandrel bar, method for producing mandrel bar, and method for operating seamless pipe mill
WO2010146546A1 (en) * 2009-06-19 2010-12-23 Sms Innse Spa Tube rolling plant
US8387430B2 (en) 2009-06-19 2013-03-05 Sms Innse Spa Tube rolling plant
EA021046B1 (en) * 2009-06-19 2015-03-31 Смс Иннсе Спа Tube rolling plant
WO2011083367A1 (en) * 2010-01-05 2011-07-14 Sms Innse Spa Tube rolling plant
JP2013516325A (en) * 2010-01-05 2013-05-13 エスエムエス インス エス．ピー．エー． Tube rolling plant
ITMI20100113A1 (en) * 2010-01-28 2011-07-29 Sms Innse Spa PLANT FOR TUBE ROLLING.
ITMI20100666A1 (en) * 2010-04-19 2011-10-20 Sms Innse Spa PLANT FOR TUBE ROLLING.
CN103071679A (en) * 2011-10-25 2013-05-01 都江堰市鑫奥岩土锚固材料有限公司 One-step forming technology of hollow anchor rod

Also Published As

Publication number Publication date
JPS6035206B2 (en) 1985-08-13

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