JPS54121266A - Rolling of tube by mandrel mill - Google Patents

Rolling of tube by mandrel mill

Info

Publication number
JPS54121266A
JPS54121266A JP2946278A JP2946278A JPS54121266A JP S54121266 A JPS54121266 A JP S54121266A JP 2946278 A JP2946278 A JP 2946278A JP 2946278 A JP2946278 A JP 2946278A JP S54121266 A JPS54121266 A JP S54121266A
Authority
JP
Japan
Prior art keywords
tube
rolled
basis
length
roll
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
JP2946278A
Other languages
Japanese (ja)
Other versions
JPS6114881B2 (en
Inventor
Koji Yoshioka
Masaru Utakoji
Takeo Yamada
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.)
SUMITOMO KAINAN KOKAN KK
Nippon Steel Corp
Original Assignee
SUMITOMO KAINAN KOKAN KK
Sumitomo Metal Industries 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 SUMITOMO KAINAN KOKAN KK, Sumitomo Metal Industries Ltd filed Critical SUMITOMO KAINAN KOKAN KK
Priority to JP2946278A priority Critical patent/JPS54121266A/en
Publication of JPS54121266A publication Critical patent/JPS54121266A/en
Publication of JPS6114881B2 publication Critical patent/JPS6114881B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/78—Control of tube rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE:To reduce the dispersion of tube length after rolling by changing the gap and circumferential speed of roll on the basis of the actually measured diameter of mandrel bar and the actnally measured length of tube to be rolled when bored tube to be rolled is rolled by mandrel mill. CONSTITUTION:To regulate the length of rough tube, the average diameter of each mandrel bar is acturally measrured and on the basis of the measured value, the roll gap is changed, and also the hole length of each tube to be rolled, bored by piercer, is actually measured and on the basis of the measured value, the circumferential speed of roll is changed. In short, rolling is made by changing the gap and circumferential speed of roll for every one tube and for every one mandrel bar on the basis of respective values measured in advance, so that uniform rough tube can be obtained regardless of the dispersion of mandrel bar and bored hole length.
JP2946278A 1978-03-15 1978-03-15 Rolling of tube by mandrel mill Granted JPS54121266A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2946278A JPS54121266A (en) 1978-03-15 1978-03-15 Rolling of tube by mandrel mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2946278A JPS54121266A (en) 1978-03-15 1978-03-15 Rolling of tube by mandrel mill

Publications (2)

Publication Number Publication Date
JPS54121266A true JPS54121266A (en) 1979-09-20
JPS6114881B2 JPS6114881B2 (en) 1986-04-21

Family

ID=12276759

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2946278A Granted JPS54121266A (en) 1978-03-15 1978-03-15 Rolling of tube by mandrel mill

Country Status (1)

Country Link
JP (1) JPS54121266A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219152A (en) * 1975-08-07 1977-02-14 Nippon Kokan Kk Method of controlling continuous tube rolling mill

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219152A (en) * 1975-08-07 1977-02-14 Nippon Kokan Kk Method of controlling continuous tube rolling mill

Also Published As

Publication number Publication date
JPS6114881B2 (en) 1986-04-21

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