FR2418037A1 - Extn. of mandrels from pierced tube blanks - on piercing rolling mill, using an extractor where a clamping head draws the mandrel out of the pierced blank - Google Patents

Extn. of mandrels from pierced tube blanks - on piercing rolling mill, using an extractor where a clamping head draws the mandrel out of the pierced blank

Info

Publication number
FR2418037A1
FR2418037A1 FR7805196A FR7805196A FR2418037A1 FR 2418037 A1 FR2418037 A1 FR 2418037A1 FR 7805196 A FR7805196 A FR 7805196A FR 7805196 A FR7805196 A FR 7805196A FR 2418037 A1 FR2418037 A1 FR 2418037A1
Authority
FR
France
Prior art keywords
mandrel
pierced
blank
mandrels
extractor
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
FR7805196A
Other languages
French (fr)
Other versions
FR2418037B1 (en
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.)
Vallourec SA
Original Assignee
Vallourec SA
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 Vallourec SA filed Critical Vallourec SA
Priority to FR7805196A priority Critical patent/FR2418037A1/en
Priority to JP2019079A priority patent/JPS54163766A/en
Priority to IT20441/79A priority patent/IT1110209B/en
Priority to DE19792906861 priority patent/DE2906861A1/en
Publication of FR2418037A1 publication Critical patent/FR2418037A1/en
Application granted granted Critical
Publication of FR2418037B1 publication Critical patent/FR2418037B1/fr
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
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/06—Interchanging mandrels, fixing plugs on mandrel rods or cooling during interchanging mandrels

Abstract

The blank is driven over the mandrel in a piercing rolling mill, and then both are moved sideways out of the rolling axis to an extractor, in which a clamping head draws the mandrel out of the pierced blank. The pierced blank is next removed sideways, whereas the mandrel enters a cooling basin and is then moved sideways onto a roller track (a). Roller track (a) is employed to drive the mandrel forward into a position parallel with the rolling axis, and from which the mandrel is returned to its working position. One mandrel can thus be cooled and return to its working position while another mandrel is piercing another tube blank. Continuous circulation is achieved of mandrels which are cooled, inspected, and re-used. Min. loss of productive time is achieved.
FR7805196A 1978-02-23 1978-02-23 Extn. of mandrels from pierced tube blanks - on piercing rolling mill, using an extractor where a clamping head draws the mandrel out of the pierced blank Granted FR2418037A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7805196A FR2418037A1 (en) 1978-02-23 1978-02-23 Extn. of mandrels from pierced tube blanks - on piercing rolling mill, using an extractor where a clamping head draws the mandrel out of the pierced blank
JP2019079A JPS54163766A (en) 1978-02-23 1979-02-22 Rolling method and apparatus therefor
IT20441/79A IT1110209B (en) 1978-02-23 1979-02-22 PROCEDURE AND LAMINATION DEVICE
DE19792906861 DE2906861A1 (en) 1978-02-23 1979-02-22 METHOD AND DEVICE FOR ROLLING TUBE-SHAPED BODIES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7805196A FR2418037A1 (en) 1978-02-23 1978-02-23 Extn. of mandrels from pierced tube blanks - on piercing rolling mill, using an extractor where a clamping head draws the mandrel out of the pierced blank

Publications (2)

Publication Number Publication Date
FR2418037A1 true FR2418037A1 (en) 1979-09-21
FR2418037B1 FR2418037B1 (en) 1981-11-06

Family

ID=9204950

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805196A Granted FR2418037A1 (en) 1978-02-23 1978-02-23 Extn. of mandrels from pierced tube blanks - on piercing rolling mill, using an extractor where a clamping head draws the mandrel out of the pierced blank

Country Status (4)

Country Link
JP (1) JPS54163766A (en)
DE (1) DE2906861A1 (en)
FR (1) FR2418037A1 (en)
IT (1) IT1110209B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE491444A (en) * 1948-12-01
DE440647C (en) *
US1946933A (en) * 1932-03-31 1934-02-13 Diescher Tube Mills Inc Tube-making apparatus
FR2080943A1 (en) * 1970-01-30 1971-11-26 Mannesmann Ag
DE2347385A1 (en) * 1973-09-17 1975-03-27 Mannesmann Meer Ag Quick release arrangement for piercing mill mandrels - with radially movable locking elements operated by moving bolt in mandrel rod

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE440647C (en) *
US1946933A (en) * 1932-03-31 1934-02-13 Diescher Tube Mills Inc Tube-making apparatus
BE491444A (en) * 1948-12-01
FR2080943A1 (en) * 1970-01-30 1971-11-26 Mannesmann Ag
DE2347385A1 (en) * 1973-09-17 1975-03-27 Mannesmann Meer Ag Quick release arrangement for piercing mill mandrels - with radially movable locking elements operated by moving bolt in mandrel rod

Also Published As

Publication number Publication date
JPS54163766A (en) 1979-12-26
DE2906861A1 (en) 1979-09-06
IT1110209B (en) 1985-12-23
FR2418037B1 (en) 1981-11-06
IT7920441A0 (en) 1979-02-22

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Legal Events

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