GB445248A - Process for the manufacture of seamless metal tubes - Google Patents

Process for the manufacture of seamless metal tubes

Info

Publication number
GB445248A
GB445248A GB29594/35A GB2959435A GB445248A GB 445248 A GB445248 A GB 445248A GB 29594/35 A GB29594/35 A GB 29594/35A GB 2959435 A GB2959435 A GB 2959435A GB 445248 A GB445248 A GB 445248A
Authority
GB
United Kingdom
Prior art keywords
pass
diameter
tube
roll
mandrel
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.)
Expired
Application number
GB29594/35A
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.)
Alfina Immobilien- Finanzierungs & Verwaltungs AG
Original Assignee
Alfina Immobilien- Finanzierungs & Verwaltungs 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 Alfina Immobilien- Finanzierungs & Verwaltungs AG filed Critical Alfina Immobilien- Finanzierungs & Verwaltungs AG
Publication of GB445248A publication Critical patent/GB445248A/en
Expired legal-status Critical Current

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
    • B21B17/02—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, i.e. the mandrel rod contacts the rolled tube over the rod length
    • B21B17/04—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, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Forging (AREA)

Abstract

445,248. Rolling tubes. ALFINA IMMOBILIEN-FINANZIERUNGS & VERWALTUNGS AKT.-GES., Glarus, Switzerland. Oct. 26, 1935, No. 29594. Convention date, Oct. 27, 1934. [Class 83 (iv)] A cup-shaped billet is pushed by a mandrel through undriven tube-forming rolls which rapidly reduce the cross-section to at least <1>/5 of its initial area; the number of roll passes K1 to Kn are at least equal to the proportionate reduction (i.e. 5/1) and the ratio of roll diameter to pass diameter (i.e. tube diameter) varies from at least 0À3 in the first pass to at most 2À5 at the last pass. The trough diameter of the roll in the largest pass is smaller than the diameter of the pass and increases successively in each reducing pass until it is greater than the last pass diameter. These proportions are said to prevent the mandrel from pushing through or leaving the tube. The pass may be formed by three coacting rolls shaped so that only the middle 60‹ arc of the groove surface of each roll bears on the tube.
GB29594/35A 1934-10-27 1935-10-26 Process for the manufacture of seamless metal tubes Expired GB445248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT445248X 1934-10-27

Publications (1)

Publication Number Publication Date
GB445248A true GB445248A (en) 1936-04-06

Family

ID=3674306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29594/35A Expired GB445248A (en) 1934-10-27 1935-10-26 Process for the manufacture of seamless metal tubes

Country Status (2)

Country Link
US (1) US2041937A (en)
GB (1) GB445248A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118726B (en) * 1956-06-12 1961-12-07 Eugene Weiss Dipl Ing Process, for example impact process, for stretching metallic hollow bodies, e.g. Pipes, over a mandrel and for this purpose trained non-round caliber rows

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739372A (en) * 1951-03-30 1956-03-27 United States Steel Corp Method of making propeller-blade blanks
NL207167A (en) * 1955-05-17 1900-01-01 Delta Kuehlschrank G M B H
DE2333916C2 (en) * 1973-07-04 1986-01-09 Kocks Technik Gmbh & Co, 4010 Hilden Calibration of the rolls of a reducing mill for tubes
IT1078828B (en) * 1975-06-25 1985-05-08 Mannesmann Roehren Werke Ag CALIBRATION OF A THREE-CYLINDER REDUCING ROLLER TO AVOID THE FORMATION OF POLYGONS INSIDE THE PIPES ON THE OCCASION OF THE REDUCING LAMINATION OF THE PIPES
DE2844042A1 (en) * 1978-10-09 1980-04-24 Kocks Gmbh Friedrich ROLLER ROLLER
DE59105240D1 (en) * 1990-09-19 1995-05-24 Mannesmann Ag Rolling mill for stretching hollow bodies on a mandrel.
US6490900B1 (en) 2000-10-11 2002-12-10 American Cast Iron Pipe Company Pipe gauging and rounding apparatus and method
CN102989913A (en) * 2012-12-28 2013-03-27 太原通泽重工有限公司 Steel tube necking mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118726B (en) * 1956-06-12 1961-12-07 Eugene Weiss Dipl Ing Process, for example impact process, for stretching metallic hollow bodies, e.g. Pipes, over a mandrel and for this purpose trained non-round caliber rows

Also Published As

Publication number Publication date
US2041937A (en) 1936-05-26

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