GB1482727A - Expanding metal tubes - Google Patents

Expanding metal tubes

Info

Publication number
GB1482727A
GB1482727A GB27292/75A GB2729275A GB1482727A GB 1482727 A GB1482727 A GB 1482727A GB 27292/75 A GB27292/75 A GB 27292/75A GB 2729275 A GB2729275 A GB 2729275A GB 1482727 A GB1482727 A GB 1482727A
Authority
GB
United Kingdom
Prior art keywords
tube
explosive
expanded
flame
bore
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
GB27292/75A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB27292/75A priority Critical patent/GB1482727A/en
Priority to ZA762876A priority patent/ZA762876B/en
Priority to PT65108A priority patent/PT65108A/en
Priority to DE19762623242 priority patent/DE2623242A1/en
Priority to BR7603405A priority patent/BR7603405A/en
Priority to IT24121/76A priority patent/IT1061538B/en
Priority to FR7617572A priority patent/FR2315340A1/en
Priority to NL7606947A priority patent/NL7606947A/en
Publication of GB1482727A publication Critical patent/GB1482727A/en
Expired legal-status Critical Current

Links

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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
    • B21D39/066—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in using explosives
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F28F2275/068—Fastening; Joining by welding by explosive welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)
  • Insulated Conductors (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

1482727 Tube expanding; welding by pressure IMPERIAL CHEMICAL INDUSTRIES Ltd 26 April 1976 [27 June 1975] 27292/75 Headings B3J and B3R A metal tube 10 is expanded by detonation of a flame-sensitive explosive charge 19 to which a flame is conducted along the bore of a non- metallic tube 15 by burning a deflagrating material 24 so distributed along the bore of tube 15 as to leave a continuous flame propagation channel between the material 24 and the internal wall of the tube. The end of one tube may be expanded within the end of a larger tube, or into a tube-plate 12 or nozzle. Tube-ends may be expanded singly, consecutively or simultaneously, and welds will be produced if sufficient explosive is used. The explosive 19 may be lead azide which may be used with a secondary explosive 18 such as pentaerythritol tetranitrate, both being compressed directly into the end of the polyethylene, polypropylene, polyvinyl chloride or nylon tube 15, or inserted therein in separate containers. The deflagrating material 24 may be granular but is preferably a textile yarn or tape having black powder bonded thereon, or thin strands of cordite. The material 24 may be ignited by an electric fuse-head or, as shown, an incendiary composition 21 consisting of an oxidizing agent, a reducing agent and a binding agent contained in the end of tube 15 or in a metal capsule 20 taped 22 to the end of the tube 15. A slot 23 receives a loop of igniter cord.
GB27292/75A 1975-06-27 1975-06-27 Expanding metal tubes Expired GB1482727A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB27292/75A GB1482727A (en) 1975-06-27 1975-06-27 Expanding metal tubes
ZA762876A ZA762876B (en) 1975-06-27 1976-05-13 Expanding metal tubes
PT65108A PT65108A (en) 1975-06-27 1976-05-18 Expanding metal tubes
DE19762623242 DE2623242A1 (en) 1975-06-27 1976-05-24 METAL PIPE EXPANSION METHOD AND DEVICE
BR7603405A BR7603405A (en) 1975-06-27 1976-05-28 PERFECT PROCESS AND DEVICE FOR EXPANDING A METAL PIPE
IT24121/76A IT1061538B (en) 1975-06-27 1976-06-09 METHOD AND DEVICE FOR THE EXPANSION OF METAL TUBES
FR7617572A FR2315340A1 (en) 1975-06-27 1976-06-10 METHOD AND DEVICE FOR CAUSING THE RADIAL EXPANSION OF A METAL TUBE
NL7606947A NL7606947A (en) 1975-06-27 1976-06-25 METHOD AND DEVICE FOR EXPANDING A METAL PIPE, AS WELL AS THE PRODUCT OF THE METHOD.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27292/75A GB1482727A (en) 1975-06-27 1975-06-27 Expanding metal tubes

Publications (1)

Publication Number Publication Date
GB1482727A true GB1482727A (en) 1977-08-10

Family

ID=10257214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27292/75A Expired GB1482727A (en) 1975-06-27 1975-06-27 Expanding metal tubes

Country Status (8)

Country Link
BR (1) BR7603405A (en)
DE (1) DE2623242A1 (en)
FR (1) FR2315340A1 (en)
GB (1) GB1482727A (en)
IT (1) IT1061538B (en)
NL (1) NL7606947A (en)
PT (1) PT65108A (en)
ZA (1) ZA762876B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168637A (en) * 1981-12-21 1986-06-25 Electric Power Res Inst Heat exchanger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494392A (en) * 1982-11-19 1985-01-22 Foster Wheeler Energy Corporation Apparatus for forming an explosively expanded tube-tube sheet joint including a low energy transfer cord and booster
AU6289286A (en) * 1985-09-04 1987-03-24 Smt B.V. (Shockwave Metalworking Technologies B.V.) Joint between two tubular elements, preferably made of metal,and methods for the manufacture of such a joint

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1126571A (en) * 1965-06-16 1968-09-05 Int Research & Dev Co Ltd Joining tubes to tube plates, for example in heat exchangers
US3555656A (en) * 1967-05-25 1971-01-19 Westinghouse Electric Corp Method of explosively plugging a leaky metal tube in a heat exchanger tube bundle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168637A (en) * 1981-12-21 1986-06-25 Electric Power Res Inst Heat exchanger
GB2170436A (en) * 1981-12-21 1986-08-06 Electric Power Res Inst Apparatus for bonding a metal tube in a bore

Also Published As

Publication number Publication date
IT1061538B (en) 1983-04-30
PT65108A (en) 1976-06-01
DE2623242A1 (en) 1977-01-20
FR2315340A1 (en) 1977-01-21
ZA762876B (en) 1977-12-28
BR7603405A (en) 1977-06-28
NL7606947A (en) 1976-12-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee