RO71341A - Procedeu de perforare a semifabricatelor utilizate la fabricarea tevilor - Google Patents

Procedeu de perforare a semifabricatelor utilizate la fabricarea tevilor

Info

Publication number
RO71341A
RO71341A RO7687022A RO8702276A RO71341A RO 71341 A RO71341 A RO 71341A RO 7687022 A RO7687022 A RO 7687022A RO 8702276 A RO8702276 A RO 8702276A RO 71341 A RO71341 A RO 71341A
Authority
RO
Romania
Prior art keywords
semifabricates
perforing
teps
manufacture
semifabricates used
Prior art date
Application number
RO7687022A
Other languages
English (en)
French (fr)
Inventor
Seishiro Yoshiwara
Minrou Kawaharada
Samon Yanagimoto
Original Assignee
Nippon Steel Corp,Jp
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,Jp filed Critical Nippon Steel Corp,Jp
Publication of RO71341A publication Critical patent/RO71341A/ro

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/08—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
RO7687022A 1975-07-18 1976-07-19 Procedeu de perforare a semifabricatelor utilizate la fabricarea tevilor RO71341A (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50088031A JPS5211156A (en) 1975-07-18 1975-07-18 Method for hollowing press roll

Publications (1)

Publication Number Publication Date
RO71341A true RO71341A (ro) 1982-05-10

Family

ID=13931442

Family Applications (1)

Application Number Title Priority Date Filing Date
RO7687022A RO71341A (ro) 1975-07-18 1976-07-19 Procedeu de perforare a semifabricatelor utilizate la fabricarea tevilor

Country Status (10)

Country Link
US (1) US4052874A (ro)
JP (1) JPS5211156A (ro)
BR (1) BR7604675A (ro)
CA (1) CA1036394A (ro)
DE (1) DE2631562C2 (ro)
FR (1) FR2317973A1 (ro)
GB (1) GB1503482A (ro)
IT (1) IT1062259B (ro)
RO (1) RO71341A (ro)
SU (1) SU784743A3 (ro)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1115518B (it) * 1977-04-21 1986-02-03 Innocenti Santeustacchio Spa Guida di entrata per presso-laminatoio perforatore
JPH07505092A (ja) * 1992-03-23 1995-06-08 モゼイ，ジョージ・エヌ 継目無管を製造するための穿孔圧延機
JP5459347B2 (ja) * 2012-04-18 2014-04-02 新日鐵住金株式会社 継目無金属管用丸ビレット及び継目無金属管の製造方法
DE102012107041B4 (de) 2012-08-01 2014-05-15 Benteler Deutschland Gmbh Verfahren und Vorrichtung zur Herstellung eines metallischen Hohlblockes aus einem metallischen Block
RU2721253C1 (ru) * 2019-09-09 2020-05-18 Общество с ограниченной ответственностью "ФБТ" (ООО "ФБТ") Способ изготовления длинномерных пустотелых изделий и устройство для его реализации

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE100452C (ro) *
US721210A (en) * 1901-10-03 1903-02-24 Max Mannesmann Art of rolling tubes.
FR1224904A (fr) * 1958-02-05 1960-06-28 Procédé et laminoir perceur, à presse, pour la transformation de lingots ou barres pleines en ébauches creuses destinées à la fabrication de tubes sans soudure
DE1302427B (de) * 1963-07-04 1972-05-04 Calmes, Jean-Paul, Mont-sur-Lausanne (Schweiz) Verfahren zur Herstellung eines zylindrischen Hohlkörpers durch Preßlochwalzen

Also Published As

Publication number Publication date
IT1062259B (it) 1984-02-01
FR2317973B1 (ro) 1980-11-14
GB1503482A (en) 1978-03-08
JPS5211156A (en) 1977-01-27
DE2631562C2 (de) 1985-01-24
DE2631562A1 (de) 1977-01-20
BR7604675A (pt) 1977-08-02
FR2317973A1 (fr) 1977-02-11
CA1036394A (en) 1978-08-15
SU784743A3 (ru) 1980-11-30
US4052874A (en) 1977-10-11
JPS5536001B2 (ro) 1980-09-18

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