GB1394404A - Production of pipes with internal helical fins - Google Patents

Production of pipes with internal helical fins

Info

Publication number
GB1394404A
GB1394404A GB367473A GB367473A GB1394404A GB 1394404 A GB1394404 A GB 1394404A GB 367473 A GB367473 A GB 367473A GB 367473 A GB367473 A GB 367473A GB 1394404 A GB1394404 A GB 1394404A
Authority
GB
United Kingdom
Prior art keywords
pipe
die
blank
fins
internal helical
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
GB367473A
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.)
OTHERS
Original Assignee
OTHERS
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 OTHERS filed Critical OTHERS
Priority to GB367473A priority Critical patent/GB1394404A/en
Publication of GB1394404A publication Critical patent/GB1394404A/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
    • 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
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/12—Die holders; Rotating dies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/006—Rigid pipes specially profiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Metal Extraction Processes (AREA)
  • Extrusion Of Metal (AREA)

Abstract

1394404 Drawing J S STAROSTIN V I PLOKHOV V K EROKHOV V P IVANOV V N KROTKOV A V ANISIMOV R N AJUPOV and M F GOLOVINOV 24 Jan 1973 3674/73 Heading B3P [Also in Division F2] A pipe 9 having internal helical fins 10 is made by drawing and rotating a pipe blank 1 having straight, longitudinal fins 2 through a drawing die 3 which alters the cross-sectional shape of the blank 1 to prevent it slipping relative to the die 3 and then further drawing the blank 1 without rotation to produce the desired cross-sectional shape. A circular pipe blank 1 is drawn through the die 3, which is rotated via a worm gear 4, to produce an oval pipe 5 which is twisted before passing through a fixed second die 8 for drawing the pipe 5 back to a circular shape. The finished pipe 9 may have a fin thickness of not less than 1 mm. The fins may be twisted anticlockwise and clockwise on alternate sections of the pipe.
GB367473A 1973-01-24 1973-01-24 Production of pipes with internal helical fins Expired GB1394404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB367473A GB1394404A (en) 1973-01-24 1973-01-24 Production of pipes with internal helical fins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB367473A GB1394404A (en) 1973-01-24 1973-01-24 Production of pipes with internal helical fins

Publications (1)

Publication Number Publication Date
GB1394404A true GB1394404A (en) 1975-05-14

Family

ID=9762797

Family Applications (1)

Application Number Title Priority Date Filing Date
GB367473A Expired GB1394404A (en) 1973-01-24 1973-01-24 Production of pipes with internal helical fins

Country Status (1)

Country Link
GB (1) GB1394404A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300378A (en) * 1979-03-08 1981-11-17 Sinnathamby Thiruvarudchelvan Method and apparatus for forming elongated articles having reduced diameter cross-sections
FR2636415A1 (en) * 1988-09-15 1990-03-16 Carrier Corp HIGH EFFICIENCY HEAT TRANSFER TUBE FOR HEAT EXCHANGER
GB2227542A (en) * 1989-01-26 1990-08-01 British Gas Plc Flue pipe
US5016460A (en) * 1989-12-22 1991-05-21 Inco Alloys International, Inc. Durable method for producing finned tubing
EP0597820A1 (en) * 1992-11-11 1994-05-18 HARREITHER GESELLSCHAFT m.b.H Heating element for surface heating

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300378A (en) * 1979-03-08 1981-11-17 Sinnathamby Thiruvarudchelvan Method and apparatus for forming elongated articles having reduced diameter cross-sections
FR2636415A1 (en) * 1988-09-15 1990-03-16 Carrier Corp HIGH EFFICIENCY HEAT TRANSFER TUBE FOR HEAT EXCHANGER
GB2227542A (en) * 1989-01-26 1990-08-01 British Gas Plc Flue pipe
GB2227542B (en) * 1989-01-26 1992-09-09 British Gas Plc Flue pipe and flue
US5016460A (en) * 1989-12-22 1991-05-21 Inco Alloys International, Inc. Durable method for producing finned tubing
EP0597820A1 (en) * 1992-11-11 1994-05-18 HARREITHER GESELLSCHAFT m.b.H Heating element for surface heating

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Legal Events

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