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WO2001066991A1 - Structures creuses renforcees localement et procede de production de celles-ci - Google Patents

Structures creuses renforcees localement et procede de production de celles-ci Download PDF

Info

Publication number
WO2001066991A1
WO2001066991A1 PCT/US2000/005802 US0005802W WO0166991A1 WO 2001066991 A1 WO2001066991 A1 WO 2001066991A1 US 0005802 W US0005802 W US 0005802W WO 0166991 A1 WO0166991 A1 WO 0166991A1
Authority
WO
WIPO (PCT)
Prior art keywords
foam
section
preform
structural support
hollow structure
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.)
Ceased
Application number
PCT/US2000/005802
Other languages
English (en)
Inventor
Stefan Wolfgang Heinemann
Terry Dennis Claar
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.)
Fraunhofer USA Inc
Original Assignee
Fraunhofer USA 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 Fraunhofer USA Inc filed Critical Fraunhofer USA Inc
Priority to PCT/US2000/005802 priority Critical patent/WO2001066991A1/fr
Priority to AU2000238686A priority patent/AU2000238686A1/en
Publication of WO2001066991A1 publication Critical patent/WO2001066991A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/02—Welded joints
    • F16L13/0254—Welded joints the pipes having an internal or external coating
    • F16L13/0263—Welded joints the pipes having an internal or external coating having an internal coating
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/08—Coatings characterised by the materials used by metal

Definitions

  • the present invention relates to custom designed structural tubing, also referred to as
  • tubing is referred to as tailored or custom tubing.
  • Tailored tubes are made from tubes with different properties, wall thickness and/or
  • Another approach is to put a sleeve around
  • the reinforcing material used in the present invention is a metal foam which has recently
  • metal foams are to insulate and stiffen automotive panels, such as the fiont liie all. the rear
  • the present invention relates to a new structurally reinforced tubing and a method of
  • the invention is cost effective and structurally superior as it allows tor tubing to
  • the invention involves incorporating a metal foam insert within the tubing at critical
  • the metal foam is
  • foam can be activated inside a shaped tool cavity to form a molded foam insert , which is
  • Figures 1 and 1 ⁇ illustrate tailored tubes made according to the known art . showing
  • Figure 2 shows another tailored tube according to the known art. having a reinforcing
  • Figure 3 shows a tube according to the claimed invention with metal foam precursor
  • Figure 4 shows the tube of Figure 3 inserted after tacking and forming of the tube.
  • Figure 5 shows the tube of Figure 4 after the metal foam is activated.
  • the present invention allows the use of a single tube for shaping into a finished part that
  • the two essential steps of the present invention are to position a foam '"preform" 12 at a
  • a metal foam precursor is inserted in the tubing before activation and before the
  • tubing is formed into its desired structural shape (see Fig. 4). This allows the tubing with
  • the foam After the tubing has been formed into the desired geometry, the foam can be
  • the metal foam preform typically by temperature. Upon thermal activation, the metal foam preform typically
  • the foam preforms can be cut to size to allow proper filling of the tubular section for
  • the stiffness to be achieved will be designed by tailoring the
  • Metal foam is commercially available in a wide variety of different materials and characteristics.
  • Aluminum foams can be produced in essentially any alloy composition or commercial grade for
  • metal powders are available.
  • aluminum foams have been produced from Al-
  • a widely used metal foam alloy is Al-Si which metallurgically
  • foams in aluminum, steel, zinc, and other alloys are also available. It is contemplated that other materials
  • foam compositions such as aluminum alloys, steels, ceramic particle-reinforced aluminum metal
  • the foamable piecursor is produced in extruded lengths containing a foaming agent that
  • preform can be tapered to increase the amount ot material toward the centei of the tube or could
  • the pielorms are sold in sheets of desned thickness which can be cut to size depending on the
  • preform is to set the ptelorm in place upon the fiat tube blank prior to lorming the blank into a
  • the preform can also be positioned with a spot weld or
  • the tube After the preform or preforms have been fixed in position, the tube can be formed or bent
  • the volume of individual foam preforms is preferably
  • the preforms are preferably
  • the preform can be attached
  • Another method of positioning the foam precursor is to tack the foam inserts into a
  • the tube will be heated at an elevated temperature (of about 650-700 degrees
  • the foam can also be activated with microwaves,
  • an activated "slug " of metal foam can be inserted to the structural tube. This slug can be
  • the resulting reinforced tubing can be used in a variety of structural applications.
  • the tubing can be delivered in straight pieces of stock lengths with one or

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

La présente invention concerne une structure tubulaire renforcée fabriquée par le rattachement d'un précurseur (12) de mousse métallique dans un élément (14) tubulaire et par l'activation de cet agent moussant de façon à renforcer une section donnée de ce tube. On peut également placer ce précurseur avant le profilage de ce tube. Dans un autre mode de réalisation de l'invention, on peut introduire en place un renfort de mousse métallique pré-expansée et moulée à dimension.
PCT/US2000/005802 2000-03-06 2000-03-06 Structures creuses renforcees localement et procede de production de celles-ci Ceased WO2001066991A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2000/005802 WO2001066991A1 (fr) 2000-03-06 2000-03-06 Structures creuses renforcees localement et procede de production de celles-ci
AU2000238686A AU2000238686A1 (en) 2000-03-06 2000-03-06 Locally reinforced hollow structures and method for producing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/005802 WO2001066991A1 (fr) 2000-03-06 2000-03-06 Structures creuses renforcees localement et procede de production de celles-ci

Publications (1)

Publication Number Publication Date
WO2001066991A1 true WO2001066991A1 (fr) 2001-09-13

Family

ID=21741123

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/005802 Ceased WO2001066991A1 (fr) 2000-03-06 2000-03-06 Structures creuses renforcees localement et procede de production de celles-ci

Country Status (2)

Country Link
AU (1) AU2000238686A1 (fr)
WO (1) WO2001066991A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008060234A1 (de) * 2008-12-04 2010-06-10 Mann + Hummel Gmbh Fluidleitung und Verfahren zur Herstellung einer Fluidleitung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254814A (en) * 1991-04-18 1992-10-21 Gkn Sankey Ltd Reinforced light metal article and method for its production
WO1993005103A1 (fr) * 1991-09-03 1993-03-18 Terence Allan Russell Structures de renforcement
DE19637347A1 (de) * 1995-09-27 1997-04-03 Volkswagen Ag Verfahren zum Herstellen eines Gußteils
US5622542A (en) * 1993-01-21 1997-04-22 Alcan International Limited Particle-stabilized metal foam and its production

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254814A (en) * 1991-04-18 1992-10-21 Gkn Sankey Ltd Reinforced light metal article and method for its production
WO1993005103A1 (fr) * 1991-09-03 1993-03-18 Terence Allan Russell Structures de renforcement
US5622542A (en) * 1993-01-21 1997-04-22 Alcan International Limited Particle-stabilized metal foam and its production
DE19637347A1 (de) * 1995-09-27 1997-04-03 Volkswagen Ag Verfahren zum Herstellen eines Gußteils

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008060234A1 (de) * 2008-12-04 2010-06-10 Mann + Hummel Gmbh Fluidleitung und Verfahren zur Herstellung einer Fluidleitung

Also Published As

Publication number Publication date
AU2000238686A1 (en) 2001-09-17

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