GB838984A - Improvements relating to the formation of external fins on metal tube stock - Google Patents

Improvements relating to the formation of external fins on metal tube stock

Info

Publication number
GB838984A
GB838984A GB26866/57A GB2686657A GB838984A GB 838984 A GB838984 A GB 838984A GB 26866/57 A GB26866/57 A GB 26866/57A GB 2686657 A GB2686657 A GB 2686657A GB 838984 A GB838984 A GB 838984A
Authority
GB
United Kingdom
Prior art keywords
fins
workpiece
die
fin pattern
recesses
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
GB26866/57A
Inventor
George Thomas Maughan
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.)
Fairey Co Ltd
Original Assignee
Fairey 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 Fairey Co Ltd filed Critical Fairey Co Ltd
Priority to GB26866/57A priority Critical patent/GB838984A/en
Publication of GB838984A publication Critical patent/GB838984A/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
    • 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
    • B21C37/202—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 guides parallel to the tube axis
    • 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)
  • Forging (AREA)

Abstract

838,984. Making finned tubes for nuclear reactors; forging. FAIREY CO. Ltd., [formerly FAIREY AVIATION CO. Ltd.]. Nov. 24, 1958 [Aug. 26, 1957], No. 26866/57. Classes 83 (2) and 83 (4). A method of forming external fins on tubular metal stock comprises enclosing a workpiece 10 in an external tubular die 11 whose internal moulding surfaces are formed with a pattern of recesses 12 corresponding to the required fin pattern, and drawing an expander plug 14, whose maximum working diameter is larger than the original bore of the workpiece 10, through the workpiece bore so as to expand its wall and cause the material of the wall to be displaced outwardly at 16 into the recesses 12 of the die 11 to produce the required fin pattern. The workpiece 10 which may be of magnesium beryllium alloy is heated and inserted into the heated die 11 which is in two semi-cylindrical parts clamped together. The plug 14, of frustoconical, spherical or barrel shape, may be vibrated as it is drawn through the workpiece or be jumped through in a series of steps. The fins may be circumferential or helical. The fin pattern may include, Fig. 3, straight radial, longitudinal fins 21 and a number of part-helical fins 22 of lesser height extending between, and rooted at their ends 24 to, adjacent fins 21. Radial extension strips may be riveted to the outer edges of the longitudinal fins 21 to increase their height. The finned tube of Fig. 3 may be inserted into a graphite sleeve, being centralized therein by the fins 21, for heat-exchange purposes in nuclear reactors.
GB26866/57A 1957-08-26 1957-08-26 Improvements relating to the formation of external fins on metal tube stock Expired GB838984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26866/57A GB838984A (en) 1957-08-26 1957-08-26 Improvements relating to the formation of external fins on metal tube stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26866/57A GB838984A (en) 1957-08-26 1957-08-26 Improvements relating to the formation of external fins on metal tube stock

Publications (1)

Publication Number Publication Date
GB838984A true GB838984A (en) 1960-06-22

Family

ID=10250455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26866/57A Expired GB838984A (en) 1957-08-26 1957-08-26 Improvements relating to the formation of external fins on metal tube stock

Country Status (1)

Country Link
GB (1) GB838984A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436948A (en) * 1965-12-20 1969-04-08 Commissariat Energie Atomique Method of fabrication of finned tubes and device for the application of said method
CN101738110B (en) * 2010-01-21 2011-06-29 上海交通大学 Double-pipe heat exchanger with deflection fins deviating and spreading at both sides

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436948A (en) * 1965-12-20 1969-04-08 Commissariat Energie Atomique Method of fabrication of finned tubes and device for the application of said method
CN101738110B (en) * 2010-01-21 2011-06-29 上海交通大学 Double-pipe heat exchanger with deflection fins deviating and spreading at both sides

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