GB1394404A - Production of pipes with internal helical fins - Google Patents
Production of pipes with internal helical finsInfo
- 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
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.
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)
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 |
-
1973
- 1973-01-24 GB GB367473A patent/GB1394404A/en not_active Expired
Cited By (6)
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 |