BE893345A - PROCESS FOR AVOIDING INTERNAL DEFECTS DURING THE MANUFACTURE OF TUBES - Google Patents

PROCESS FOR AVOIDING INTERNAL DEFECTS DURING THE MANUFACTURE OF TUBES

Info

Publication number
BE893345A
BE893345A BE0/208212A BE208212A BE893345A BE 893345 A BE893345 A BE 893345A BE 0/208212 A BE0/208212 A BE 0/208212A BE 208212 A BE208212 A BE 208212A BE 893345 A BE893345 A BE 893345A
Authority
BE
Belgium
Prior art keywords
tubes
manufacture
internal defects
defects during
avoiding internal
Prior art date
Application number
BE0/208212A
Other languages
French (fr)
Original Assignee
Mannesmann Ag
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 Mannesmann Ag filed Critical Mannesmann Ag
Publication of BE893345A publication Critical patent/BE893345A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
BE0/208212A 1981-05-29 1982-05-28 PROCESS FOR AVOIDING INTERNAL DEFECTS DURING THE MANUFACTURE OF TUBES BE893345A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813122046 DE3122046A1 (en) 1981-05-29 1981-05-29 METHOD FOR AVOIDING INTERNAL FAULTS IN THE PRODUCTION OF TUBES

Publications (1)

Publication Number Publication Date
BE893345A true BE893345A (en) 1982-09-16

Family

ID=6133831

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/208212A BE893345A (en) 1981-05-29 1982-05-28 PROCESS FOR AVOIDING INTERNAL DEFECTS DURING THE MANUFACTURE OF TUBES

Country Status (7)

Country Link
JP (1) JPS57199507A (en)
BE (1) BE893345A (en)
BR (1) BR8203116A (en)
DE (1) DE3122046A1 (en)
FR (1) FR2506633A1 (en)
GB (1) GB2099738A (en)
IT (1) IT8220164A0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1160196B (en) * 1983-02-24 1987-03-04 Dalmine Spa HOT DEOXIDATION PROCESS OF SEMI-FINISHED METAL TUBES
DE3432288A1 (en) * 1984-09-01 1986-03-13 Kocks Technik Gmbh & Co, 4010 Hilden METHOD AND SYSTEM FOR PRODUCING SEAMLESS TUBES
FI114900B (en) * 2000-12-20 2005-01-31 Outokumpu Oy Method and plant for the manufacture of pipes
FI114901B (en) * 2000-12-20 2005-01-31 Outokumpu Oy Method and plant for producing tubes by rolling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258947A (en) * 1963-12-19 1966-07-05 Schloemann Ag Processes for protecting products and tools during physical deformation of heavy metals and products so produced
JPS5537590B2 (en) * 1973-06-11 1980-09-29
DE2356985A1 (en) * 1973-11-15 1975-05-22 Kabel Metallwerke Ghh Hot-rolled seamless metal tubes mfr. - esp. of copper and copper alloys, using water or gas to prevent oxidn

Also Published As

Publication number Publication date
DE3122046A1 (en) 1982-12-16
FR2506633A1 (en) 1982-12-03
BR8203116A (en) 1983-05-10
JPS57199507A (en) 1982-12-07
IT8220164A0 (en) 1982-03-15
GB2099738A (en) 1982-12-15

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: MANNESMANN A.G.

Effective date: 19840528