GB1274194A - Method of cold forming tubular members with axial passages or channels - Google Patents

Method of cold forming tubular members with axial passages or channels

Info

Publication number
GB1274194A
GB1274194A GB24123/68A GB2412368A GB1274194A GB 1274194 A GB1274194 A GB 1274194A GB 24123/68 A GB24123/68 A GB 24123/68A GB 2412368 A GB2412368 A GB 2412368A GB 1274194 A GB1274194 A GB 1274194A
Authority
GB
United Kingdom
Prior art keywords
blank
channels
die
extrusion
crosshead
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
GB24123/68A
Inventor
John Stuart Waite
John Bernard Ridings
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.)
GKN Floform Ltd
Original Assignee
GKN Floform 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 GKN Floform Ltd filed Critical GKN Floform Ltd
Priority to GB24123/68A priority Critical patent/GB1274194A/en
Priority to DE19691926087 priority patent/DE1926087B2/en
Priority to FR6916599A priority patent/FR2009051A1/fr
Priority to JP46055732A priority patent/JPS5017353B1/ja
Publication of GB1274194A publication Critical patent/GB1274194A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/06—Manufacture of commutators
    • H01R43/08—Manufacture of commutators in which segments are not separated until after assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Forging (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

1,274,194. Making heat exchangers; extruding; forging. GKN FLOFORM Ltd. 20 May, 1969 [21 May, 1968], No. 24123/68. Headings B3A, B3H and B3P. A tubular metal blank is deformed by extrusion over a grooved mandrel 27 through a die 30 to produce channels 11 on the inside wall of the blank and then by pressing in a ring die 62 with a punch 67 to wholly or partially close the channels. The extrusion press comprises a base 20, upper crosshead 26 on which the mandrel is mounted and a plate 25 guided on pins 22 and having a stripper sleeve 29. The upper crosshead 26 is acted upon by an hydraulic ram. The die 30 may be grooved to form external ribs 17 or the extrusion may be done in two-stages, firstly to form the channels and then the ribs. In operation a pair of blanks are placed one above the other in a guide block 34 and the crosshead lowered to force the lower blank through the die 30. After the extrusion of the lower blank the crosshead is raised and the blanks stripped from the mandrel by the sleeve 29 since the plate 25 is prevented from rising by toggles 36. The extruded blank falls through the hole 21 in the base 20 and the other blank is positioned in the guide block 34. The extruded blank is then placed in the ring die 62 and pressed by the punch 67 which is of larger diameter than the inside diameter of the blank. The punch deforms the walls of the channels 11 to wholly or partially close them. If the channels are closed the inside wall of the blank is brazed to seal the channels and form a heatexchanger tube.
GB24123/68A 1968-05-21 1968-05-21 Method of cold forming tubular members with axial passages or channels Expired GB1274194A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB24123/68A GB1274194A (en) 1968-05-21 1968-05-21 Method of cold forming tubular members with axial passages or channels
DE19691926087 DE1926087B2 (en) 1968-05-21 1969-05-21 METHOD AND DEVICE FOR PRODUCING INNER RIBS ON TUBE-SHAPED METAL BLANKS
FR6916599A FR2009051A1 (en) 1968-05-21 1969-05-21
JP46055732A JPS5017353B1 (en) 1968-05-21 1971-07-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24123/68A GB1274194A (en) 1968-05-21 1968-05-21 Method of cold forming tubular members with axial passages or channels

Publications (1)

Publication Number Publication Date
GB1274194A true GB1274194A (en) 1972-05-17

Family

ID=10206765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24123/68A Expired GB1274194A (en) 1968-05-21 1968-05-21 Method of cold forming tubular members with axial passages or channels

Country Status (4)

Country Link
JP (1) JPS5017353B1 (en)
DE (1) DE1926087B2 (en)
FR (1) FR2009051A1 (en)
GB (1) GB1274194A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2374820A (en) * 2001-03-30 2002-10-30 Schlumberger Holdings Steel tube manufacture associated with perforating gun carriers
CN112517658A (en) * 2020-10-16 2021-03-19 中北大学 Bidirectional differential extrusion forming die for external longitudinal rib cylindrical part
CN112517657A (en) * 2020-10-16 2021-03-19 中北大学 Bidirectional differential extrusion forming method for outer longitudinal rib cylindrical part
CN112517816A (en) * 2020-10-16 2021-03-19 中北大学 Bidirectional intermittent differential upsetting composite extrusion forming method for outer longitudinal rib cylindrical part
CN113909327A (en) * 2021-09-22 2022-01-11 中北大学 Pre-deformation die, pre-deformation method and preparation method of cylindrical part with outer longitudinal ribs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544926B1 (en) * 1983-04-20 1986-05-30 Jarret Jacques MAGNETIC RING FOR RECTILINEAR FREE PISTON GENERATORS
CN108339892A (en) * 2018-05-05 2018-07-31 芜湖君如保温材料有限公司 A kind of water tank template molding die of stainless steel square shape assembled water tank

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2374820A (en) * 2001-03-30 2002-10-30 Schlumberger Holdings Steel tube manufacture associated with perforating gun carriers
GB2374820B (en) * 2001-03-30 2003-07-16 Schlumberger Holdings Perforating gun carriers and their methods of manufacture
US6702039B2 (en) 2001-03-30 2004-03-09 Schlumberger Technology Corporation Perforating gun carriers and their methods of manufacture
CN112517658A (en) * 2020-10-16 2021-03-19 中北大学 Bidirectional differential extrusion forming die for external longitudinal rib cylindrical part
CN112517657A (en) * 2020-10-16 2021-03-19 中北大学 Bidirectional differential extrusion forming method for outer longitudinal rib cylindrical part
CN112517816A (en) * 2020-10-16 2021-03-19 中北大学 Bidirectional intermittent differential upsetting composite extrusion forming method for outer longitudinal rib cylindrical part
CN112517658B (en) * 2020-10-16 2022-04-08 中北大学 Bidirectional differential extrusion forming die for external longitudinal rib cylindrical part
CN112517816B (en) * 2020-10-16 2022-04-08 中北大学 Bidirectional intermittent differential upsetting composite extrusion forming method for outer longitudinal rib cylindrical part
CN113909327A (en) * 2021-09-22 2022-01-11 中北大学 Pre-deformation die, pre-deformation method and preparation method of cylindrical part with outer longitudinal ribs
CN113909327B (en) * 2021-09-22 2024-05-03 中北大学 Pre-deformation die, pre-deformation method and preparation method of cylindrical part with external longitudinal ribs

Also Published As

Publication number Publication date
DE1926087B2 (en) 1977-10-27
DE1926087A1 (en) 1969-11-27
JPS5017353B1 (en) 1975-06-20
FR2009051A1 (en) 1970-01-30

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Legal Events

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