JPS5781908A - Rolling method with inclined roll - Google Patents

Rolling method with inclined roll

Info

Publication number
JPS5781908A
JPS5781908A JP15848280A JP15848280A JPS5781908A JP S5781908 A JPS5781908 A JP S5781908A JP 15848280 A JP15848280 A JP 15848280A JP 15848280 A JP15848280 A JP 15848280A JP S5781908 A JPS5781908 A JP S5781908A
Authority
JP
Japan
Prior art keywords
thickness
rolling
loosening
rolls
rolled
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
JP15848280A
Other languages
Japanese (ja)
Other versions
JPS612444B2 (en
Inventor
Yutaka Mihara
Masayuki Hatanaka
Original Assignee
Nippon Kokan Kk <Nkk>
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 Kokan Kk <Nkk> filed Critical Nippon Kokan Kk <Nkk>
Priority to JP55158482A priority Critical patent/JPS612444B2/ja
Publication of JPS5781908A publication Critical patent/JPS5781908A/en
Publication of JPS612444B2 publication Critical patent/JPS612444B2/ja
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To decrease thickness deviation effectively by subjecting a material to be rolled which is rolled by inclined rolls and a plug and is extended in a rolling direction to reduction rolling in the part where there are no more parts in abutment on the plug.
CONSTITUTION: A material 4 to be rolled is forced into between inclined rolls 1, 1' each constituted of a inlet side loosening part A, a wall thickness screw-down part B, an expanding part C and an outlet side loosening part D. Then, the solid blank material part 4a of the material 4 is pierced and reduced of wall thickness by a plug 2 and the barrel-like parts of the rolls 1, 1', after which it is expanded. This expanded shell 4b is subjected to loosening and reduction rolling by the part D in succession to this, by which the thickness deviation production produced in the process of piercing and thickness reduction process is improved.
COPYRIGHT: (C)1982,JPO&Japio
JP55158482A 1980-11-11 1980-11-11 Expired JPS612444B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55158482A JPS612444B2 (en) 1980-11-11 1980-11-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55158482A JPS612444B2 (en) 1980-11-11 1980-11-11

Publications (2)

Publication Number Publication Date
JPS5781908A true JPS5781908A (en) 1982-05-22
JPS612444B2 JPS612444B2 (en) 1986-01-24

Family

ID=15672697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55158482A Expired JPS612444B2 (en) 1980-11-11 1980-11-11

Country Status (1)

Country Link
JP (1) JPS612444B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167511A (en) * 1984-09-07 1986-04-07 Kawasaki Steel Corp Rolling method of seamless pipe
JPS6192710A (en) * 1984-10-09 1986-05-10 Sumitomo Metal Ind Ltd Manufacture of large-diameter seamless steel pipe and its device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCE=1968 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167511A (en) * 1984-09-07 1986-04-07 Kawasaki Steel Corp Rolling method of seamless pipe
JPS6192710A (en) * 1984-10-09 1986-05-10 Sumitomo Metal Ind Ltd Manufacture of large-diameter seamless steel pipe and its device
JPH042321B2 (en) * 1984-10-09 1992-01-17

Also Published As

Publication number Publication date
JPS612444B2 (en) 1986-01-24

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