JPS55103207A - Manufacture of seamless metallic pipe with small diameter - Google Patents

Manufacture of seamless metallic pipe with small diameter

Info

Publication number
JPS55103207A
JPS55103207A JP914679A JP914679A JPS55103207A JP S55103207 A JPS55103207 A JP S55103207A JP 914679 A JP914679 A JP 914679A JP 914679 A JP914679 A JP 914679A JP S55103207 A JPS55103207 A JP S55103207A
Authority
JP
Japan
Prior art keywords
blank
outer diameter
bloom
root
pipe
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
JP914679A
Other languages
Japanese (ja)
Other versions
JPS6242682B2 (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 JP914679A priority Critical patent/JPS55103207A/en
Publication of JPS55103207A publication Critical patent/JPS55103207A/en
Publication of JPS6242682B2 publication Critical patent/JPS6242682B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To make possible the manufacture of titled pipe with various sizes from the bloom of large section, by specifying the sectional area, outer diameter, wall thickness, of the blank obtained from the polygonally sectioned bloom, by preparing the cylindrical blank from above blank with the press roll piercer, by reducing diameter of this cylindrical blank with two cross helical rolling mills, and by finishing with the finishing mill.
CONSTITUTION: After heating the polygonally sectioned metallic bloom of sectional area A to a suitable temperature by the furnace 1, this bloom is supported by the mandrel, and is pushed into plural round roll calibers of the press roll piercer 2; hereby, the cylindrical blank, being bottomed at one end and bottomless at another end, is prepared. Hereupon, the outer diameter of the blank after being worked is specified to 1.1 root AW1.2 root A, and the wall thickness is specified to 0.2 root AW0.3 root A. Next, the pipe blank P is rolled by the cross herical rolling mill 3 so as to reduce the outer diameter to 0.6W0.9 times, and wall thickness to 0.10W0.25 times of outer diameter reduced by the rolling work. After that, the outer diameter of the pipe blank is reduced to 0.7W0.9 times by the cross helical rolling mill 4 under a specified condition, without inserting the plug, mandrel, etc., into the blank. This pipe blank is rolled by the mandrel mill 5, is heated to a suitable temperature, and then finish rolled by the stretch reducer 9.
COPYRIGHT: (C)1980,JPO&Japio
JP914679A 1979-01-31 1979-01-31 Manufacture of seamless metallic pipe with small diameter Granted JPS55103207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP914679A JPS55103207A (en) 1979-01-31 1979-01-31 Manufacture of seamless metallic pipe with small diameter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP914679A JPS55103207A (en) 1979-01-31 1979-01-31 Manufacture of seamless metallic pipe with small diameter

Publications (2)

Publication Number Publication Date
JPS55103207A true JPS55103207A (en) 1980-08-07
JPS6242682B2 JPS6242682B2 (en) 1987-09-09

Family

ID=11712473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP914679A Granted JPS55103207A (en) 1979-01-31 1979-01-31 Manufacture of seamless metallic pipe with small diameter

Country Status (1)

Country Link
JP (1) JPS55103207A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04272088A (en) * 1991-02-27 1992-09-28 Nissei Eng:Yugen Clamping type hanger tool
CN107838196A (en) * 2017-09-07 2018-03-27 鑫鹏源智能装备集团有限公司 Mini-stretch reducing mill

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0363686U (en) * 1989-10-26 1991-06-21
JPH047481A (en) * 1990-04-24 1992-01-10 Natl House Ind Co Ltd Mounting method for hinge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04272088A (en) * 1991-02-27 1992-09-28 Nissei Eng:Yugen Clamping type hanger tool
CN107838196A (en) * 2017-09-07 2018-03-27 鑫鹏源智能装备集团有限公司 Mini-stretch reducing mill

Also Published As

Publication number Publication date
JPS6242682B2 (en) 1987-09-09

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