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GB1482978A - Expanding metal tubes - Google Patents

Expanding metal tubes

Info

Publication number
GB1482978A
GB1482978A GB27291/75A GB2729175A GB1482978A GB 1482978 A GB1482978 A GB 1482978A GB 27291/75 A GB27291/75 A GB 27291/75A GB 2729175 A GB2729175 A GB 2729175A GB 1482978 A GB1482978 A GB 1482978A
Authority
GB
United Kingdom
Prior art keywords
tube
explosive
expanded
shockwave
exploding
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
GB27291/75A
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 GB27291/75A priority Critical patent/GB1482978A/en
Priority to ZA762875A priority patent/ZA762875B/en
Priority to PT65107A priority patent/PT65107A/en
Priority to DE2622317A priority patent/DE2622317C3/en
Priority to BR3463/76A priority patent/BR7603463A/en
Priority to IT24122/76A priority patent/IT1061539B/en
Priority to FR7617571A priority patent/FR2315339A1/en
Priority to NL7606946A priority patent/NL7606946A/en
Publication of GB1482978A publication Critical patent/GB1482978A/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
    • 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
    • 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
    • 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)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

1482978 Tube expanding; welding by pressure IMPERIAL CHEMICAL INDUSTRIES Ltd 26 April 1976 [27 June 1975] 27291/75 Headings B3J and B3R A metal tube 10 is expanded by a shocksensitive explosive 24 detonated by a shock wave generated outside the tube and conducted to the explosive 24 through a non- metallic tube 15. The end of one tube may be expanded within the end of a larger tube, or into the tube plate 12 or a nozzle. Tube ends may be expanded singly, consecutively or simultaneously, and welds will result if sufficient explosive is used. The explosive 24 may be lead azide which may be used with a secondary explosive 23 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 shock wave may be generated by exploding a charge of explosive, exploding a wire by electric current or, as shown, by discharging a spark across a gap 21 between electrodes 22. The spark may be produced by discharging a capacitor or by a piezoelectric device. The inside of the tube 15 may be coated with reactive substance, such as the explosive 23, which on ignition by the shockwave adds energy to the shockwave.
GB27291/75A 1975-06-27 1975-06-27 Expanding metal tubes Expired GB1482978A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB27291/75A GB1482978A (en) 1975-06-27 1975-06-27 Expanding metal tubes
ZA762875A ZA762875B (en) 1975-06-27 1976-05-13 Expanding metal tubes
PT65107A PT65107A (en) 1975-06-27 1976-05-18 Expanding metal tubes
DE2622317A DE2622317C3 (en) 1975-06-27 1976-05-19 Method and device for expanding metal pipes
BR3463/76A BR7603463A (en) 1975-06-27 1976-05-31 PERFECT PROCESS AND DEVICES FOR EXPANDING A METAL TUBE
IT24122/76A IT1061539B (en) 1975-06-27 1976-06-09 METHOD AND DEVICE FOR THE EXPANSION OF METAL TUBES
FR7617571A FR2315339A1 (en) 1975-06-27 1976-06-10 METHOD AND DEVICE FOR CAUSING THE RADIAL EXPANSION OF A METAL TUBE
NL7606946A NL7606946A (en) 1975-06-27 1976-06-25 METHOD AND EQUIPMENT FOR THE RADIAL EXPANSION OF A METAL PIPE, AND THE PRODUCT OF THE METHOD.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27291/75A GB1482978A (en) 1975-06-27 1975-06-27 Expanding metal tubes

Publications (1)

Publication Number Publication Date
GB1482978A true GB1482978A (en) 1977-08-17

Family

ID=10257196

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27291/75A Expired GB1482978A (en) 1975-06-27 1975-06-27 Expanding metal tubes

Country Status (8)

Country Link
BR (1) BR7603463A (en)
DE (1) DE2622317C3 (en)
FR (1) FR2315339A1 (en)
GB (1) GB1482978A (en)
IT (1) IT1061539B (en)
NL (1) NL7606946A (en)
PT (1) PT65107A (en)
ZA (1) ZA762875B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005025660B4 (en) 2005-06-03 2015-10-15 Cosma Engineering Europe Ag Apparatus and method for explosion forming
DE102006037742B4 (en) 2006-08-11 2010-12-09 Cosma Engineering Europe Ag Method and apparatus for explosion forming
DE102006037754B3 (en) 2006-08-11 2008-01-24 Cosma Engineering Europe Ag Procedure for the explosion forming, comprises arranging work piece in tools and deforming by means of explosion means, igniting the explosion means in ignition place of the tools using induction element, and cooling the induction element
DE102006056788B4 (en) 2006-12-01 2013-10-10 Cosma Engineering Europe Ag Closing device for explosion forming
DE102006060372A1 (en) 2006-12-20 2008-06-26 Cosma Engineering Europe Ag Workpiece for explosion reformation process, is included into molding tool and is deformed from output arrangement by explosion reformation
DE102007036196A1 (en) 2007-08-02 2009-02-05 Cosma Engineering Europe Ag Apparatus for supplying a fluid for explosion forming
DE102008006979A1 (en) 2008-01-31 2009-08-06 Cosma Engineering Europe Ag Device for explosion forming

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409969A (en) * 1965-06-28 1968-11-12 Westinghouse Electric Corp Method of explosively welding tubes to tube plates
US3402870A (en) * 1965-09-20 1968-09-24 Westinghouse Electric Corp Explosive tube welding device
FR1489400A (en) * 1966-08-11 1967-07-21 Yorkshire Imp Metals Ltd Method of fixing tubes in tube sheets
US3566646A (en) * 1968-04-18 1971-03-02 Richard W Walkup Explosive attachment apparatus
GB1280451A (en) * 1968-05-02 1972-07-05 Int Research & Dev Co Ltd Improvements in and relating to methods of explosively welding tubes into tube plates
US3661004A (en) * 1969-11-07 1972-05-09 Atlas Chem Ind Explosive tubing swager
US3662452A (en) * 1970-03-20 1972-05-16 Atlas Chem Ind Portable swaging gun
US3868131A (en) * 1973-11-30 1975-02-25 Ultra Centrifuge Nederland Nv Methods and device for welding a metal pipe to a metal body by means of an explosive charge
US3885499A (en) * 1973-12-20 1975-05-27 Hercules Inc Thermal detonation energy-initiatable blasting caps, and detonation system and method

Also Published As

Publication number Publication date
BR7603463A (en) 1977-01-04
PT65107A (en) 1976-06-01
DE2622317C3 (en) 1979-11-08
ZA762875B (en) 1977-12-28
DE2622317A1 (en) 1977-01-13
DE2622317B2 (en) 1979-03-08
FR2315339A1 (en) 1977-01-21
IT1061539B (en) 1983-04-30
NL7606946A (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