US3720994A - Method of forming metal tubing - Google Patents

Method of forming metal tubing Download PDF

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Publication number
US3720994A
US3720994A US00201298A US3720994DA US3720994A US 3720994 A US3720994 A US 3720994A US 00201298 A US00201298 A US 00201298A US 3720994D A US3720994D A US 3720994DA US 3720994 A US3720994 A US 3720994A
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US
United States
Prior art keywords
tubing
tape
metal
tab
folded
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 - Lifetime
Application number
US00201298A
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English (en)
Inventor
R Wagele
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.)
KM Kabelmetal AG
Original Assignee
KM Kabelmetal AG
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 KM Kabelmetal AG filed Critical KM Kabelmetal AG
Application granted granted Critical
Publication of US3720994A publication Critical patent/US3720994A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/045—Hoses, i.e. flexible pipes made of rubber or flexible plastics with four or more layers without reinforcement
    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/09—Making tubes with welded or soldered seams of coated strip material ; 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
    • B21C37/10—Making tubes with riveted seams or with non-welded and non-soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L2011/047—Hoses, i.e. flexible pipes made of rubber or flexible plastics with a diffusion barrier layer
    • 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
    • Y10T29/49888—Subsequently coating

Definitions

  • the outer edges of the tab portions are metallicaly integrated as by welding to form a fluid proof seam.
  • the metal tubing is then stiffened by applying a metal adherent resin coating to the outer surface thereof.
  • a jacketing of synthetic resin may be applied over the coating.
  • An object of this invention is to provide an improved method of forming metal tubing from very thin metal tape, wherein the the metal tape is folded about a flexible non-metallic tubing to convert the same to tubular form; the marginal edge portions of the metal tape providing contacting, radial tab portions which are seamed together and folded over into contact with the tubing.
  • the non-metallic tubing provides an improved mandrel and avoids any kinking in the tin metal tape as the same is converted to tubular form.
  • Another object of this invention is to provide a method of the character described, wherein the nonmetallic tubing may be separated from the formed metal tubing.
  • a further object of this invention is to provide a method of the character described, wherein the nonmetallic tubing is in integrated relation to the metal tubing as by interposing a layer of adhesive between the tubings; the non-metallic tubing being formed of suitable synthetic resins to afford resistance to corrosive media which may be transported through the tubing.
  • FIG. l is a side elevational view illustrating the method of the instant invention.
  • FIG. 2 is a transverse section taken on the line 2-2 of FIG. ll;
  • FIG. 3 is an enlarged transverse sectional view showing tubing made by the method ofthe invention.
  • the method of making metal tubing in accordance with the instant invention comprises folding a thin metal tape to tubular form about a flexible mandrel of non-metallic material such as synthetic resin, or the like.
  • the folded tape is ofa width such as to provide tab portions derived from the marginal edge portions of the tape, which are in face to face relation and extend radially of the tubing.
  • the tab portions are integrated at their outer edges as by welding or the like; folded over into contact with the outer surface of the metal tubing.
  • a coating of metal adherent synthetic resin is then applied to the outer surface of the metal tubing, and may be followed by a jacketing of synthetic resin.
  • the flexible mandrel may be removed from the finished tubing of selected length; or, may be integrated with the metal tubing by interposing a layer of adhesive between the tubings.
  • Metal tape M is drawn from a supply reel, not shown; such tape being of aluminum, copper, stainless steel, or the like, with a thickness not exceeding 0.3 mm.
  • the tape M is moved along a forming table T where it is converted to tubular form.
  • Mandrel 40 preferably formed of a synthetic resin in tubular form.
  • Mandrel 40 is coaxially related to known folding means 21 which effects the conversion of the tape M to tubular form.
  • the tape Ml has a width greater then the circumference of the tubing 11 being formed; marginal portions of the tape indicated at 22 are disposed in face to face relation and extend radially with respect to the tubing.
  • the tab forming portions 22 are trimmed as by trimming means 23, to provide tabs 15, thus making outer edges 16 coextensive; the trimmed portions 22A being suitably removed.
  • edges 16 of tabs 15 are oxide free, which is particularly important when tape M is aluminum, since such edges 16 now pass in proper alignment to an integrating zone 25 where welding means 26. located in suitably spaced relation to edges 16, produces a longitudinally extending weldment 17.
  • the welding operation takes place under a protective u atmosphere of argon or the like, in a manner known in the art.
  • Resin coating 18 is of the type disclosed in U.S. Pat. Nos. 2,987,501 and 3,027,346, and essentially are copolymers of polyethylene and selected monomers.
  • a jacketing coating 19 may then be applied over coating 18, as by an extruder 29.
  • Coating 19 may be of polyethylene, polyvinyl chloride or the like. The tubing thus formed is drawn off by suitable draw-off means, no shown. 7
  • the tubing 40 in addition to providing mandrel means for forming metal tubing 11, may also be integrated with tubing 11, as by applying a coating of adhesive 42 to the outer surface of tubing 40, as by coating die 41.
  • adhesives may be thermosetting so that upon reaching zone 25, the welding means 26 will provide the heat for setting coating 42.
  • the heat of extruders 28, 29 may also insure the bonding action of adhesive coating 42.
  • the tubing 40 is preferably of a synthetic resin such as polyamide (Nylon) or polytetrafluorethylene (Teflon) with a wall thickness of the order of from 1.0 to 3.0 mm. for tubings ranging in diameters of 10 to mm.
  • the adhesive 42 is thus selected in accordance with the nature of the resin forming tubing 40. Accordingly, the finished, composite tubing, FIG. 3; is adequate to carry corrosive media in liquid or gaseous form Alternatively, the tubing mandrel 40 may be separated from the formed tubing 11, in which case the adhesive coating 42 is omitted. In this case, tubing 11 is formed in selected lengths, thereby allowing for removal of tubing 40 therefrom.
  • the method of forming metal tubing from a metal tape having a thickness not exceeding 0.30 mm. comprising moving a non-metallic tubing in a longitudinal path, continuously folding said tape about the outer surface of said non-metallic tubing and bringing longitudinal marginal portions of said tape into face to face relation to form a longitudinally extending radial tab, metallically integrating the longitudinal exposed edges only of said tab to form a fluid proof seam while leaving said tab of uniform thickness from the base to the outer edge thereof, folding said tab at the base thereof into contact with outer surface portions of said folded tape, and applying a synthetic resin coating in bonding relation to the outer surface of said folded tape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
US00201298A 1970-11-27 1971-11-23 Method of forming metal tubing Expired - Lifetime US3720994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702058379 DE2058379A1 (de) 1970-11-27 1970-11-27 Verfahren zur Herstellung eines rohrfoermigen Gebildes

Publications (1)

Publication Number Publication Date
US3720994A true US3720994A (en) 1973-03-20

Family

ID=5789264

Family Applications (1)

Application Number Title Priority Date Filing Date
US00201298A Expired - Lifetime US3720994A (en) 1970-11-27 1971-11-23 Method of forming metal tubing

Country Status (11)

Country Link
US (1) US3720994A (fr)
BE (1) BE764642R (fr)
BR (1) BR7103047D0 (fr)
CH (1) CH550032A (fr)
DD (1) DD98564A6 (fr)
DE (1) DE2058379A1 (fr)
FR (1) FR2115131B2 (fr)
GB (1) GB1317340A (fr)
IT (1) IT989578B (fr)
NL (1) NL7104692A (fr)
ZA (1) ZA712077B (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5194460A (ja) * 1975-02-17 1976-08-19 Goseijushihifukukinzokukatokan oyobi sonoseizohoho
US4541686A (en) * 1982-04-30 1985-09-17 Siemens Aktiengesellschaft Cable construction
US5000369A (en) * 1988-11-22 1991-03-19 Allied Tube & Conduit Corporation Method and apparatus for manufacturing plastic-lined pipe
US5054679A (en) * 1988-11-22 1991-10-08 Allied Tube & Conduit Corporation Apparatus for manufacturing plastic-lined pipe
US5451718A (en) * 1993-04-08 1995-09-19 Southwire Company Mechanically bonded metal sheath for power cable
EP1811596A1 (fr) * 2006-01-20 2007-07-25 Alcatel Lucent Guide d'onde de radiofréquence avec conducteur électrique de film plastique revêtu d'une couche conductrice
WO2009061566A1 (fr) * 2007-11-07 2009-05-14 Parker-Hannifin Corporation Tuyau souple basé sur une feuille d'aluminium
US20090263598A1 (en) * 2006-08-31 2009-10-22 Luvata Oy Method for producing a metal tube by clad rolling one more profiles to form at least one channel, a clad rolling mill for joining one or more profiles, a clad rolled metal tube
CN102615861A (zh) * 2012-04-05 2012-08-01 如皋市万通防腐有限公司 一种衬氟管道的制作工艺
US20210400856A1 (en) * 2020-06-23 2021-12-23 Intel Corporation Additive manufacturing for integrated circuit assembly cables
US11842826B2 (en) 2020-06-23 2023-12-12 Intel Corporation Additive manufacturing for integrated circuit assembly connector support structures
US11887944B2 (en) 2020-06-23 2024-01-30 Intel Corporation Additive manufacturing for integrated circuit assembly connectors

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4310272A1 (de) † 1993-03-30 1994-10-06 Emil Heinrich Friedrich Verfahren zur Herstellung von mehrschichtigen Verbundrohren mit Metalleinlagen
GB2328727A (en) * 1997-09-01 1999-03-03 Draftex Ind Ltd Fluid transporting pipe with metallic layer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE589600C (de) * 1930-05-17 1933-12-11 Metall Walz U Plattierwerke Hi Aus Bimetall hergestelltes Metallfass
US1945594A (en) * 1929-11-23 1934-02-06 Chase Method of and apparatus for manufacturing tubing
US2066025A (en) * 1935-07-24 1936-12-29 Zublin Method of making a metal tube
US3332138A (en) * 1965-08-11 1967-07-25 Gen Cable Corp Method and apparatus for making precision sized tubing
US3639970A (en) * 1969-10-02 1972-02-08 Phillips Petroleum Co Method and apparatus for forming plastic-lined metal conduit
US3657809A (en) * 1967-09-14 1972-04-25 Kabel Metallwerke Ghh Process for making thin metal tubing
US3692063A (en) * 1970-03-17 1972-09-19 Kabel Metallwerke Ghh Flexible waveguide and method of producing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1945594A (en) * 1929-11-23 1934-02-06 Chase Method of and apparatus for manufacturing tubing
DE589600C (de) * 1930-05-17 1933-12-11 Metall Walz U Plattierwerke Hi Aus Bimetall hergestelltes Metallfass
US2066025A (en) * 1935-07-24 1936-12-29 Zublin Method of making a metal tube
US3332138A (en) * 1965-08-11 1967-07-25 Gen Cable Corp Method and apparatus for making precision sized tubing
US3657809A (en) * 1967-09-14 1972-04-25 Kabel Metallwerke Ghh Process for making thin metal tubing
US3639970A (en) * 1969-10-02 1972-02-08 Phillips Petroleum Co Method and apparatus for forming plastic-lined metal conduit
US3692063A (en) * 1970-03-17 1972-09-19 Kabel Metallwerke Ghh Flexible waveguide and method of producing

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5194460A (ja) * 1975-02-17 1976-08-19 Goseijushihifukukinzokukatokan oyobi sonoseizohoho
US4541686A (en) * 1982-04-30 1985-09-17 Siemens Aktiengesellschaft Cable construction
US5000369A (en) * 1988-11-22 1991-03-19 Allied Tube & Conduit Corporation Method and apparatus for manufacturing plastic-lined pipe
US5054679A (en) * 1988-11-22 1991-10-08 Allied Tube & Conduit Corporation Apparatus for manufacturing plastic-lined pipe
US5451718A (en) * 1993-04-08 1995-09-19 Southwire Company Mechanically bonded metal sheath for power cable
US7683744B2 (en) 2006-01-20 2010-03-23 Alcatel Lucent Radio frequency waveguide comprising an electric conductor made of a plastic foil layer laminated with a electric conductive material layer
EP1811596A1 (fr) * 2006-01-20 2007-07-25 Alcatel Lucent Guide d'onde de radiofréquence avec conducteur électrique de film plastique revêtu d'une couche conductrice
US20070171007A1 (en) * 2006-01-20 2007-07-26 Alcatel Lucent Radio frequency waveguide comprising an electric conductor made of a plastic foil layer laminated with a electric conductive material layer
US20090263598A1 (en) * 2006-08-31 2009-10-22 Luvata Oy Method for producing a metal tube by clad rolling one more profiles to form at least one channel, a clad rolling mill for joining one or more profiles, a clad rolled metal tube
JP2011503471A (ja) * 2007-11-07 2011-01-27 パーカー・ハニフィン・コーポレーション アルミニウム箔ホース
WO2009061566A1 (fr) * 2007-11-07 2009-05-14 Parker-Hannifin Corporation Tuyau souple basé sur une feuille d'aluminium
US20110017338A1 (en) * 2007-11-07 2011-01-27 Nikhil Baxi Aluminum foil based hose
JP2014122706A (ja) * 2007-11-07 2014-07-03 Parker Hannifin Corp アルミニウム箔ホース
KR101496222B1 (ko) 2007-11-07 2015-02-26 파커-한니핀 코포레이션 호스 부재와, 그 제조 방법 및 호스
US9234610B2 (en) 2007-11-07 2016-01-12 Parker-Hannifin Corporation Aluminum foil based hose
CN102615861A (zh) * 2012-04-05 2012-08-01 如皋市万通防腐有限公司 一种衬氟管道的制作工艺
CN102615861B (zh) * 2012-04-05 2014-11-19 如皋市万通防腐有限公司 一种衬氟管道的制作工艺
US20210400856A1 (en) * 2020-06-23 2021-12-23 Intel Corporation Additive manufacturing for integrated circuit assembly cables
US11842826B2 (en) 2020-06-23 2023-12-12 Intel Corporation Additive manufacturing for integrated circuit assembly connector support structures
US11887944B2 (en) 2020-06-23 2024-01-30 Intel Corporation Additive manufacturing for integrated circuit assembly connectors
US11895815B2 (en) * 2020-06-23 2024-02-06 Intel Corporation Additive manufacturing for integrated circuit assembly cables

Also Published As

Publication number Publication date
FR2115131A2 (fr) 1972-07-07
DD98564A6 (fr) 1973-06-20
GB1317340A (en) 1973-05-16
BR7103047D0 (pt) 1973-04-17
NL7104692A (fr) 1972-05-30
ZA712077B (en) 1971-12-29
FR2115131B2 (fr) 1974-02-15
CH550032A (de) 1974-06-14
DE2058379A1 (de) 1972-06-08
BE764642R (fr) 1971-08-16
IT989578B (it) 1975-06-10

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