GB899755A - Manufacture of extended surface tubes - Google Patents

Manufacture of extended surface tubes

Info

Publication number
GB899755A
GB899755A GB339860A GB339860A GB899755A GB 899755 A GB899755 A GB 899755A GB 339860 A GB339860 A GB 339860A GB 339860 A GB339860 A GB 339860A GB 899755 A GB899755 A GB 899755A
Authority
GB
United Kingdom
Prior art keywords
groove
tube
ridge
fin
strip
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
GB339860A
Inventor
Graham Murray Cameron
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.)
Howell and Co Ltd
Original Assignee
Howell and Co Ltd
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 Howell and Co Ltd filed Critical Howell and Co Ltd
Priority to GB339860A priority Critical patent/GB899755A/en
Publication of GB899755A publication Critical patent/GB899755A/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
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes

Abstract

899,755. Making finned tubes for heat exchangers; rolling. HOWELL & CO. Ltd. Jan. 30, 1961 [Jan. 30, 1960], No. 3398/60. Classes 83 (2) and 83 (4). A method of securing a helical fin on a metal tube comprises forming a helical groove with a ridge on at least one side in the outer surface of the tube, inserting into the groove one edge of a continuous strip and then forcing the ridge inwards against the fin, the outer part of which is supported perpendicularly to the tube by a rolling tool so that the inner edge becomes bent and keyed to the tube. A flat bottomed groove 3 of width equal to the thickness of the fin and ridges 4, 5 are formed in the surface of a tube 1 by a blunt-nosed tool 2. A strip of metal is fed into the groove 3 by a roll 7 which supports it radially and at the same time rolls the ridge 5 across to fill the groove 3 and bend over and anchor the inner edge of the strip to produce a good mechanical and heat conducting joint. Specification 897,635 is referred to.
GB339860A 1960-01-30 1960-01-30 Manufacture of extended surface tubes Expired GB899755A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB339860A GB899755A (en) 1960-01-30 1960-01-30 Manufacture of extended surface tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB339860A GB899755A (en) 1960-01-30 1960-01-30 Manufacture of extended surface tubes

Publications (1)

Publication Number Publication Date
GB899755A true GB899755A (en) 1962-06-27

Family

ID=9757585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB339860A Expired GB899755A (en) 1960-01-30 1960-01-30 Manufacture of extended surface tubes

Country Status (1)

Country Link
GB (1) GB899755A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248179A (en) * 1979-07-13 1981-02-03 Foster Wheeler Energy Corporation Internally grooved heat transfer conduit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248179A (en) * 1979-07-13 1981-02-03 Foster Wheeler Energy Corporation Internally grooved heat transfer conduit

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