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GB689043A - Method of producing a metallic structure having multiple cylindrical walls - Google Patents

Method of producing a metallic structure having multiple cylindrical walls

Info

Publication number
GB689043A
GB689043A GB2672/50A GB267250A GB689043A GB 689043 A GB689043 A GB 689043A GB 2672/50 A GB2672/50 A GB 2672/50A GB 267250 A GB267250 A GB 267250A GB 689043 A GB689043 A GB 689043A
Authority
GB
United Kingdom
Prior art keywords
tubes
tube
feb
limit
pressure
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
GB2672/50A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB689043A publication Critical patent/GB689043A/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
    • B21C37/154—Making multi-wall tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

689,043. Making pipes; stamping. FERRAND, G. Feb. 1, 1950 [Feb. 15, 1949], No. 2672/50. Classes 83 (ii) and 83 (iv). [Also in Group XXVIII] A composite metal tube is produced from at least two cylindrical elements, the outer of which has a limit of proportional elongation greater than that of the inner, by interfitting the elements and subjecting the inner element to an expansive stress until the outer element is subject to an elastic elongation greater than the limit of proportional elongation of the inner element so that when pressure is released the inner element remains permanently set and the outer element elastically stressed. In an embodiment three tubes 1, 2, 3 are slidingly interfitted and placed between plates 4, 5 of a hydraulic press. Fluid is admitted to the tubes from a pipe 6 until the tubes 2, 3 are permanently set. On releasing the pressure the tube 1 contracts on to the tubes 2, 3. The tubes 2, 3 may be prehardened by applying radial stress thereto in a rigid mould or they may be of different material to the tube 1. The stressing may take place in steps after each successive smaller element is assembled.
GB2672/50A 1949-02-15 1950-02-01 Method of producing a metallic structure having multiple cylindrical walls Expired GB689043A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR689043X 1949-02-15

Publications (1)

Publication Number Publication Date
GB689043A true GB689043A (en) 1953-03-18

Family

ID=9027069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2672/50A Expired GB689043A (en) 1949-02-15 1950-02-01 Method of producing a metallic structure having multiple cylindrical walls

Country Status (1)

Country Link
GB (1) GB689043A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017695A (en) * 1957-01-31 1962-01-23 United Concrete Pipe Corp Method of sizing bells and spigots of steel-cylinder concrete pipe
US3077170A (en) * 1955-01-13 1963-02-12 Flexonics Corp Tube forming method
US3432916A (en) * 1966-04-18 1969-03-18 Up Right Inc Method for making a joint for hardened aluminum tubing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077170A (en) * 1955-01-13 1963-02-12 Flexonics Corp Tube forming method
US3017695A (en) * 1957-01-31 1962-01-23 United Concrete Pipe Corp Method of sizing bells and spigots of steel-cylinder concrete pipe
US3432916A (en) * 1966-04-18 1969-03-18 Up Right Inc Method for making a joint for hardened aluminum tubing

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