US2835275A - Tube with external longitudinal ribs - Google Patents

Tube with external longitudinal ribs Download PDF

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Publication number
US2835275A
US2835275A US378498A US37849853A US2835275A US 2835275 A US2835275 A US 2835275A US 378498 A US378498 A US 378498A US 37849853 A US37849853 A US 37849853A US 2835275 A US2835275 A US 2835275A
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US
United States
Prior art keywords
tube
ribs
longitudinal ribs
external longitudinal
external
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 - Lifetime
Application number
US378498A
Inventor
Scholten Karl Ernst
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.)
Vodafone GmbH
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
Priority to FR1079472D priority Critical patent/FR1079472A/en
Priority to DEM14483A priority patent/DE910612C/en
Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to US378498A priority patent/US2835275A/en
Application granted granted Critical
Publication of US2835275A publication Critical patent/US2835275A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D15/00—Corrugating tubes
    • B21D15/02—Corrugating tubes longitudinally
    • 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
    • B21B21/005—Pilgrim-step tube-rolling, i.e. pilger mills with reciprocating stand, e.g. driving the stand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/006—Rigid pipes specially profiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal

Definitions

  • the present invention relates to the formation of a seamless tube with external longitudinal ribs as known per se and consists in that the said external ribs are produced by cold pilger-step rolling.
  • the inside of the tube prefferably provided with ribs or grooves.
  • the said grooves are formed so as to be opposite to the ribs formed on the outside.
  • the production of tubes in accordance with the present invention is effected with rolls in which recesses or grooves are provided, preferably in the crest (middle or top) and in the trough plane (side) thereof, such recesses or grooves corresponding as regards their shape to the required ribs.
  • the crests are at the middle region or top of the rolls and the trough on the sides of the tube.
  • the manufacture of tubes in accordance with the present invention can be effected in various ways, for example, it is possible to roll out a billet over a profiled mandrel with rolls of the type described above in order to obtain both an external and an internal profiling of the tube. However, it is also possible to roll out the billet with rolls of the type described over a smooth cylindrical mandrel and so to choose the rolling conditions that, for example, a smooth cylindrical inside surface is formed. Moreover, in order to produce tubes with two opposed external ribs, the recesses can be arranged only in the trough plane of the rolls, and, by
  • the present invention may be more readily understood from the drawing which illustrates a cross-section of a tube manufactured in accordance with the present invention and in which a tube 1 is formed with external ribs 2 and internal grooves 3, which are formed in the inside surface of the tube 1 opposite to the external ribs 2.
  • a cold pilger rolled seamless tube having external longitudinal ribs thereon and grooves inside the tube opposite the ribs formed by stepby-step cold pilger rolling, the ribs having high consolidation of material, high strength and improved surface.

Landscapes

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

Description

y 1958 K. E. SCHOLTEN 2,835,275
- TUBE WITH EXTERNAL LONGITUDINAL RIBS Filed Sept. 4, 1953 [fit 8175071 2,835,275 Patented May 20, 1958 TUBE WITH EXTERNAL LONGITUDINAL RIBS Karl Ernst Scholten, Witten (Ruhr), Germany, assignor to Mannesmann Alrtiengesellschaft, Dusseldorf, Ger many, a German company Application September 4, 1953, Serial No, 378,498
' 1 Claim. (c1. 138-70 The present invention relates to the formation of a seamless tube with external longitudinal ribs as known per se and consists in that the said external ribs are produced by cold pilger-step rolling.
With such a tube fashioned in accordance with the invention, it is also possible for the inside of the tube to be provided with ribs or grooves. In the case in which grooves are provided cn'the inside surface of the tube, the said grooves are formed so as to be opposite to the ribs formed on the outside.
The production of tubes in accordance with the present invention is effected with rolls in which recesses or grooves are provided, preferably in the crest (middle or top) and in the trough plane (side) thereof, such recesses or grooves corresponding as regards their shape to the required ribs. The crests are at the middle region or top of the rolls and the trough on the sides of the tube.
The manufacture of tubes in accordance with the present invention can be effected in various ways, for example, it is possible to roll out a billet over a profiled mandrel with rolls of the type described above in order to obtain both an external and an internal profiling of the tube. However, it is also possible to roll out the billet with rolls of the type described over a smooth cylindrical mandrel and so to choose the rolling conditions that, for example, a smooth cylindrical inside surface is formed. Moreover, in order to produce tubes with two opposed external ribs, the recesses can be arranged only in the trough plane of the rolls, and, by
suitable dimensioning of the thickness of the tube wall before and after the rolling, it is possible to produce tubes in which the external ribs have grooves associated therewith on the inside surface of the tube without the necessity of employing a profiled mandrel.
The present invention may be more readily understood from the drawing which illustrates a cross-section of a tube manufactured in accordance with the present invention and in which a tube 1 is formed with external ribs 2 and internal grooves 3, which are formed in the inside surface of the tube 1 opposite to the external ribs 2.
What I claim as my invention and desire to secure by Letters Patent of the United States is:
A cold pilger rolled seamless tube having external longitudinal ribs thereon and grooves inside the tube opposite the ribs formed by stepby-step cold pilger rolling, the ribs having high consolidation of material, high strength and improved surface.
References Cited in the file of this patent UNITED STATES PATENTS 185,375 Whitehouse Dec. 12, 1876 385,109 Garver et al. June 26, 1888 1,842,280 Neuberth Jan. 19, 1932 FOREIGN PATENTS 4,554 Great Britain Feb. 22, 1902 6,415 Great Britain Mar. 15, 1902 20,447 Great Britain Sept. 16, 1896 463,382 Great Britain Mar. 30, 1932
US378498A 1952-06-21 1953-09-04 Tube with external longitudinal ribs Expired - Lifetime US2835275A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1079472D FR1079472A (en) 1953-09-04 Pipe provided with external longitudinal ribs and its manufacturing process
DEM14483A DE910612C (en) 1952-06-21 1952-06-21 Tube with external longitudinal ribs and process for its manufacture
US378498A US2835275A (en) 1953-09-04 1953-09-04 Tube with external longitudinal ribs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US378498A US2835275A (en) 1953-09-04 1953-09-04 Tube with external longitudinal ribs

Publications (1)

Publication Number Publication Date
US2835275A true US2835275A (en) 1958-05-20

Family

ID=23493349

Family Applications (1)

Application Number Title Priority Date Filing Date
US378498A Expired - Lifetime US2835275A (en) 1952-06-21 1953-09-04 Tube with external longitudinal ribs

Country Status (2)

Country Link
US (1) US2835275A (en)
FR (1) FR1079472A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647076A1 (en) * 1989-05-22 1990-11-23 Ecia Equip Composants Ind Auto STEERING AXLE FORMING ANTI-THEFT LOCKING MEMBER
US5205790A (en) * 1989-05-22 1993-04-27 Ecia Steering-wheel shaft forming an anti-theft lock element
USD1046744S1 (en) 2022-04-13 2024-10-15 Rev Robotics Llc Wheel
US12115813B2 (en) * 2022-04-13 2024-10-15 Rev Robotics Llc Apertured article, insertion article and associated systems

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US185375A (en) * 1876-12-12 Improvement in the manufacture of metal tubes
US385109A (en) * 1888-06-26 Tube and mode of making the same
GB189620447A (en) * 1896-09-16 1897-05-29 William Snelgrove Improvements in or connected with Pipes or Tubes for Conveying Water.
GB190204554A (en) * 1902-02-22 1903-02-19 Max Mannesmann Improvements in the Manufacture of Tubes and Apparatus therefor.
GB190206415A (en) * 1902-03-15 1903-03-12 Max Mannesmann Improvements in the Rolling of Tubes
US1842280A (en) * 1931-04-11 1932-01-19 Tube Reducing Corp Metal tube
GB463382A (en) * 1936-08-20 1937-03-30 Guenther Lobkowitz Improvements in and relating to continuous rolling mills

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US185375A (en) * 1876-12-12 Improvement in the manufacture of metal tubes
US385109A (en) * 1888-06-26 Tube and mode of making the same
GB189620447A (en) * 1896-09-16 1897-05-29 William Snelgrove Improvements in or connected with Pipes or Tubes for Conveying Water.
GB190204554A (en) * 1902-02-22 1903-02-19 Max Mannesmann Improvements in the Manufacture of Tubes and Apparatus therefor.
GB190206415A (en) * 1902-03-15 1903-03-12 Max Mannesmann Improvements in the Rolling of Tubes
US1842280A (en) * 1931-04-11 1932-01-19 Tube Reducing Corp Metal tube
GB463382A (en) * 1936-08-20 1937-03-30 Guenther Lobkowitz Improvements in and relating to continuous rolling mills

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647076A1 (en) * 1989-05-22 1990-11-23 Ecia Equip Composants Ind Auto STEERING AXLE FORMING ANTI-THEFT LOCKING MEMBER
EP0399869A1 (en) * 1989-05-22 1990-11-28 Ecia - Equipements Et Composants Pour L'industrie Automobile Steering wheel axis forming an anti-theft locking device
US5205790A (en) * 1989-05-22 1993-04-27 Ecia Steering-wheel shaft forming an anti-theft lock element
USD1046744S1 (en) 2022-04-13 2024-10-15 Rev Robotics Llc Wheel
US12115813B2 (en) * 2022-04-13 2024-10-15 Rev Robotics Llc Apertured article, insertion article and associated systems

Also Published As

Publication number Publication date
FR1079472A (en) 1954-11-30

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