GB1045618A - A method of manufacturing tubular heat exchange devices - Google Patents

A method of manufacturing tubular heat exchange devices

Info

Publication number
GB1045618A
GB1045618A GB34423/64A GB3442364A GB1045618A GB 1045618 A GB1045618 A GB 1045618A GB 34423/64 A GB34423/64 A GB 34423/64A GB 3442364 A GB3442364 A GB 3442364A GB 1045618 A GB1045618 A GB 1045618A
Authority
GB
United Kingdom
Prior art keywords
tube
liner tube
heat exchange
tubular heat
exchange devices
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
GB34423/64A
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.)
Calumet and Hecla Inc
Original Assignee
Calumet and Hecla Inc
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 Calumet and Hecla Inc filed Critical Calumet and Hecla Inc
Publication of GB1045618A publication Critical patent/GB1045618A/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
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/10—Making finned tubes
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/22—Making metal-coated products; Making products from two or more metals
    • 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
    • B21C37/154—Making multi-wall tubes
    • 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
    • B21C37/202—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 guides parallel to the tube axis
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
    • B23K20/2333—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer one layer being aluminium, magnesium or beryllium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/027—Making tubes with soldering or welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • 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
    • F28F1/003—Multiple wall conduits, e.g. for leak detection
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49361—Tube inside tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49377—Tube with heat transfer means
    • Y10T29/49378—Finned tube
    • Y10T29/49384—Internally finned
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49927—Hollow body is axially joined cup or tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49934—Inward deformation of aperture or hollow body wall by axially applying force

Abstract

1,045,618. Producing composite finned tubes. CALUMET & HECLA Inc. Aug. 21, 1964 [Sept. 30, 1963], No. 34423/64. Heading B3A. [Also in Division F4] A method of making a composite tubular device comprises extruding a liner tube 12 having a finned inner surface, assembling over the liner tube a shroud tube 16 having smooth inner and outer surfaces and a smaller yield strength than that of the liner tube and drawing the assembly through a die to stress the liner tube. The liner tube 12 may be of copper or copper alloy and the shroud tube 16 of aluminium or an alloy thereof. After extrusion, the aluminium tube 12 is age-hardened to increase its yield strength.
GB34423/64A 1963-09-30 1964-08-21 A method of manufacturing tubular heat exchange devices Expired GB1045618A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US312453A US3267563A (en) 1963-09-30 1963-09-30 Method of producing composite tubes

Publications (1)

Publication Number Publication Date
GB1045618A true GB1045618A (en) 1966-10-12

Family

ID=23211514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34423/64A Expired GB1045618A (en) 1963-09-30 1964-08-21 A method of manufacturing tubular heat exchange devices

Country Status (6)

Country Link
US (1) US3267563A (en)
BE (1) BE653792A (en)
DE (1) DE1290388B (en)
GB (1) GB1045618A (en)
NL (1) NL6410800A (en)
SE (1) SE324265B (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716902A (en) * 1970-02-18 1973-02-20 Small Tube Products Method of making a composite welding torch tip
US3833987A (en) * 1971-02-10 1974-09-10 Hudson Products Corp Finned tubes for use in heat exchangers
US4023557A (en) * 1975-11-05 1977-05-17 Uop Inc. Solar collector utilizing copper lined aluminum tubing and method of making such tubing
US4410012A (en) * 1980-10-20 1983-10-18 The United States Of America As Represented By The Secretary Of The Navy Radially compliant acoustic line array hose
US4337824A (en) * 1980-10-24 1982-07-06 Amtrol Double wall heat exchanger
DE3048959C2 (en) * 1980-12-24 1985-08-29 Wieland-Werke Ag, 7900 Ulm Method and device for producing a finned tube for heat exchangers or the like.
JPS60121045A (en) * 1983-12-05 1985-06-28 Kuroki Kogyosho:Kk Heat exchanger and its production
US4546819A (en) * 1984-02-10 1985-10-15 Amtrol Inc. Double wall heat exchanger
US5105540A (en) * 1988-09-30 1992-04-21 Ford Motor Company Tube method of making a composite heat exchanger tube
US4982784A (en) * 1988-09-30 1991-01-08 Ford Motor Company Composite heat exchanger tube
US5494209A (en) * 1992-12-28 1996-02-27 Olin Corporation Method for the manufacture of an internally enhanced welded tubing
DE9405062U1 (en) * 1994-03-24 1994-05-26 Hoval Interliz Ag Heat exchanger tube for boilers
ITMI20011366A1 (en) * 2001-06-28 2002-12-28 Camozzi Holding S P A TOOL WITH HIGH EFFICIENCY COOLING DUCTS
ITMN20040019A1 (en) 2004-07-13 2004-10-13 Unical Ag Spa TUBE IN A SMOKE TUBE BOILER
US7430839B2 (en) * 2004-10-04 2008-10-07 Tipper Tie, Inc. Embossed netting chutes for manual and/or automated clipping packaging apparatus
US7464537B2 (en) * 2005-04-04 2008-12-16 United Technologies Corporation Heat transfer enhancement features for a tubular wall combustion chamber
CN100372621C (en) * 2006-04-24 2008-03-05 江苏兴荣高新科技股份有限公司 Method for manufacturing copper aluminium composite tubing and copper aluminium tubing produced thereby
US20070259156A1 (en) * 2006-05-03 2007-11-08 Lucent Technologies, Inc. Hydrophobic surfaces and fabrication process
US8047235B2 (en) * 2006-11-30 2011-11-01 Alcatel Lucent Fluid-permeable body having a superhydrophobic surface
WO2009026332A1 (en) * 2007-08-21 2009-02-26 Sunspring America, Inc. Interior pipe barrier apparatus and method
US20090294112A1 (en) * 2008-06-03 2009-12-03 Nordyne, Inc. Internally finned tube having enhanced nucleation centers, heat exchangers, and methods of manufacture
US20150231946A1 (en) * 2014-02-14 2015-08-20 Unique Fabricating, Inc. Noise attenuated air duct
US10514210B2 (en) 2014-12-31 2019-12-24 Ingersoll-Rand Company Fin-tube heat exchanger
USD837357S1 (en) * 2016-09-15 2019-01-01 Ngk Insulators, Ltd. Catalyst carrier for exhaust gas purification
USD835769S1 (en) * 2016-09-15 2018-12-11 Ngk Insulators, Ltd. Catalyst carrier for exhaust gas purification
USD837356S1 (en) 2016-09-15 2019-01-01 Ngk Insulators, Ltd. Catalyst carrier for exhaust gas purification
US11549644B2 (en) 2019-07-09 2023-01-10 Seatrec, Inc. Apparatus and method for making internally finned pressure vessel

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US813918A (en) * 1899-12-29 1906-02-27 Albert Schmitz Tubes, single or compound, with longitudinal ribs.
DE130369C (en) * 1900-11-26
CH71492A (en) * 1915-07-15 1916-01-17 Alfred Schmid Metal pipe that is exposed to the action of corrosive agents
US1441459A (en) * 1921-02-04 1923-01-09 Philadelphia Bronze Bearing & Composite tube and method of making the same
DE606234C (en) * 1929-02-01 1934-11-28 Georges Auguste Ferrand Method for bandaging pipes
CH213305A (en) * 1938-03-23 1941-01-31 Felten & Guilleaume Carlswerk Aluminum tube.
US2516689A (en) * 1947-09-13 1950-07-25 Scovill Manufacturing Co Bimetal tubing with ferruled ends
US2726681A (en) * 1950-09-18 1955-12-13 Brown Fintube Co Internally finned tube
DE1673069U (en) * 1953-06-05 1954-03-04 Mannesmann Ag MULTI-LAYER TUBE WITH LONGITUDINAL RIBS
US2828537A (en) * 1954-01-25 1958-04-01 Dynamit Ag Vormals Alfred Nobe Method of producing armoured synthetic plastic tubes, vessels or shaped pieces
US2982360A (en) * 1956-10-12 1961-05-02 Int Nickel Co Protection of steel oil and/or gas well tubing
US2985508A (en) * 1957-01-07 1961-05-23 Dow Chemical Co Manufacture of metal fluorides
US3009484A (en) * 1958-09-08 1961-11-21 Arvin Ind Inc Sound attenuating laminated pipe
US3041719A (en) * 1959-05-05 1962-07-03 Engelhard Ind Inc Method of making a composite tube

Also Published As

Publication number Publication date
BE653792A (en)
SE324265B (en) 1970-05-25
NL6410800A (en) 1965-03-31
DE1290388B (en) 1969-03-06
US3267563A (en) 1966-08-23

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