GB651774A - Improved machine for forming finned tubing - Google Patents

Improved machine for forming finned tubing

Info

Publication number
GB651774A
GB651774A GB2894946A GB2894946A GB651774A GB 651774 A GB651774 A GB 651774A GB 2894946 A GB2894946 A GB 2894946A GB 2894946 A GB2894946 A GB 2894946A GB 651774 A GB651774 A GB 651774A
Authority
GB
United Kingdom
Prior art keywords
tube
rolling
rolls
annuli
diameter
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
GB2894946A
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.)
CALUMET AND HECLA CONS COPPER
Original Assignee
CALUMET AND HECLA CONS COPPER
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 CALUMET AND HECLA CONS COPPER filed Critical CALUMET AND HECLA CONS COPPER
Priority to GB2894946A priority Critical patent/GB651774A/en
Publication of GB651774A publication Critical patent/GB651774A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with helical guides

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

651,774. Rolling helically-finned tubes. NOYES, R. C. (Calumet & Hecla Consolidated Copper Co.). Sept. 27, 1946, No. 28949. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 2, 1947.] [Classes 83 (ii) and 83 (iv)] Skew-rolling.-Integrally, helical-finned heatexchanger &c. tubes having an overall fin diameter greater than or equal to the unfinned tube diameter are produced by rolling with skewed, annular-grooved rolls E. The tube is supported by a mandrel M and three symmetrically disposed power driven rolls E exert radial pressure through a conical part E<SP>6</SP>, a vee-section leading edge cutter E<SP>1</SP> and successive tapered annuli E<SP>2</SP>, E<SP>3</SP> and E<SP>4</SP> to laterally feed the tube, and extrude wall material into concave-ended tapered grooves F, F<SP>1</SP>, F2 and F<SP>3</SP> successively traversed by the fin G<SP>1</SP>. A final parallel annulus E<SP>5</SP> extrudes the tube slightly and alters the helix angle. The peripheral surfaces of the annuli are in rolling contact with the tube and extrude the fins radially without axial pressure. For making fins of equal diameter to the tube the initial conical portion E<SP>6</SP> is increased in length. The rolls, Fig. 1 (not shown), are mounted on pivots eccentrically secured to rocker arms for simultaneous radial feeding. Specification 651,775 is referred to.
GB2894946A 1946-09-27 1946-09-27 Improved machine for forming finned tubing Expired GB651774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2894946A GB651774A (en) 1946-09-27 1946-09-27 Improved machine for forming finned tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2894946A GB651774A (en) 1946-09-27 1946-09-27 Improved machine for forming finned tubing

Publications (1)

Publication Number Publication Date
GB651774A true GB651774A (en) 1951-04-11

Family

ID=10283795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2894946A Expired GB651774A (en) 1946-09-27 1946-09-27 Improved machine for forming finned tubing

Country Status (1)

Country Link
GB (1) GB651774A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032151B (en) * 1955-12-03 1958-06-12 Baustoffverwertung Anstalt F Machine for the production of pipes from fiber cement, in particular from asbestos cement
GB2072558A (en) * 1980-04-01 1981-10-07 Mannesmann Ag Skew rolling mills
CN107214266A (en) * 2017-07-12 2017-09-29 戴明德 The device and method of fin are processed on a kind of thin-walled, small-bore aluminium tube outer surface

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032151B (en) * 1955-12-03 1958-06-12 Baustoffverwertung Anstalt F Machine for the production of pipes from fiber cement, in particular from asbestos cement
GB2072558A (en) * 1980-04-01 1981-10-07 Mannesmann Ag Skew rolling mills
CN107214266A (en) * 2017-07-12 2017-09-29 戴明德 The device and method of fin are processed on a kind of thin-walled, small-bore aluminium tube outer surface
CN107214266B (en) * 2017-07-12 2018-12-07 戴明德 The device and method of fin are processed on a kind of thin-walled, small-bore aluminium tube outer surface

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