EP1657010A1 - Procédé de fabrication d'un pièce tubulaire en métal incorporant un échangeur thermique dans la gaine - Google Patents

Procédé de fabrication d'un pièce tubulaire en métal incorporant un échangeur thermique dans la gaine Download PDF

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Publication number
EP1657010A1
EP1657010A1 EP04405696A EP04405696A EP1657010A1 EP 1657010 A1 EP1657010 A1 EP 1657010A1 EP 04405696 A EP04405696 A EP 04405696A EP 04405696 A EP04405696 A EP 04405696A EP 1657010 A1 EP1657010 A1 EP 1657010A1
Authority
EP
European Patent Office
Prior art keywords
powder
tube
inner tube
outer tube
pipe
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.)
Withdrawn
Application number
EP04405696A
Other languages
German (de)
English (en)
Inventor
Beat Hofer
Lothar Bruder
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.)
Sintec HTM AG
Original Assignee
Sintec HTM 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 Sintec HTM AG filed Critical Sintec HTM AG
Priority to EP04405696A priority Critical patent/EP1657010A1/fr
Publication of EP1657010A1 publication Critical patent/EP1657010A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/004—Article comprising helical form elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Definitions

  • the present invention relates to a method for producing a tubular metal body according to the preamble of claim 1. Furthermore, the invention relates to the process of producing metal body.
  • the tubular body may have almost any other cross-section than circular, such as elliptical, oval, polygonal (e.g., 3-sided, 4-angular, 6-angular).
  • the heat supply or heat dissipation via a cooling system in the cylinder via a cooling system in the cylinder.
  • the introduction of this cooling system is normally carried out by mechanical processing.
  • a plurality of longitudinal bores are introduced over the entire length of the housing, which are connected at the end sides by cross-connections to a continuous channel system.
  • An object of the invention is to provide a method with which tubular metal body with integrated into the wall line, in particular working cylinder for extruder, are easier to produce.
  • tubular body is produced by hot isostatic pressing (HIP).
  • HIP hot isostatic pressing
  • the tubular conduit is arranged in the interior of the capsule. At least one end of the line passes through the outer shell of the capsule, wherein the Piping is sealed at the point of passage with the capsule. This end of the pipe is open, so that during the HIP process inside the pipe, the HIP pressure prevails and it is not compressed.
  • the interior of the capsule is then filled with the respective metal powder, wherein the conduit is embedded in the powder.
  • the HIP procedure follows.
  • the second end of the line is not led to the outside, then it is opened after the HIP process by a radial bore from the outside into the body.
  • a tube 1 is brought into the shape of a helix 2 and welded tightly on one end at one end 3.
  • the other end 5 is angled 90 ° outwards and remains open.
  • the diameter, length and pitch of the Helix 2 are individually adapted to the dimensional and procedural requirements of the basic cylinder body.
  • the tube 1 is made of stainless or low carbon steel.
  • This preformed cooling coil 2 is now on a cylindrical steel sheet, the inner tube 7, fixed outside, z. B. by spot welding.
  • the welded bottom end 3 is guided spirally outward to facilitate later opening by drilling from the outside.
  • each annular plate 9, 10 is attached below and above each an annular plate 9, 10 is attached.
  • a further sheet is attached, wherein the open end of the cooling coil 2 is performed by the sheet.
  • the sheet is bent into a cylinder and welded at the ends to form the outer tube 11.
  • the cooling spiral end 5 is welded tightly outside with the outer tube 11.
  • the plates above and below 9 and 10 are welded to the inner and outer tubes 7, 11.
  • the resulting in the capsule cavity is now with steel powder of quality 1.8519 through a filler neck (not shown), z. B. in the upper plate 10, filled, wherein the tube 1 is uniformly enveloped by the powder.
  • the capsule is now evacuated and welded the filler neck and the evacuation tube gas-tight.
  • the capsule with the powder mixture is exposed to a pressure of 1000 bar in a hot isostatic press at about 1000 ° C. with a holding time of 3 hours and then cooled slowly in the HIP plant. Because the interior of the Pipe 1 is connected because of the open end 5 with the compressed gas atmosphere, it is not compressed. The powder enclosed in the capsule sinters under the pressure and the temperature during the holding time. The resulting body 12 is tested for density after this treatment and machined to Gutbefund mechanically to the desired final shape.
  • a tube 1 (see Figures 1 and 2) is likewise brought into the form of a helix and provided on both sides with a 90 ° angled vertical open end analogous to the angled end 5 in Example 1.
  • the further method corresponds to Example 1 with the proviso that the two angled ends are treated analogously to the one angled end (5) of Example 1.
  • the inside is additionally coated with a hard material powder of Stellite 1 quality.
  • the preliminary work is carried out as in Example 1.
  • the open end 15 is not angled outwards, but simply straight running, so that it leads away tangentially outwards and passes through the outer tube 11.
  • the upper and lower plates 17, 18 are here inwardly over to attach an additional inner tube 20 with a smaller diameter than the inner tube 7 can.
  • the additional inner tube 20 is welded tightly to the upper and lower plates 17 and 18, respectively.
  • the first inner tube 7 no longer forms part of the outer wall of the capsule and therefore does not have to be tightly connected to the upper and lower plates.
  • a fixation, z. B. by welding to the lower plate 18, but at least advantageous, if not necessary, to avoid displacement during filling of the metal powder.
  • the sheet metal of the outer tube 11 is attached, through which the open end 15 of the tube 1 is performed.
  • the end 15 is now welded to the outer diameter of the capsule with the outer tube 11.
  • the upper and lower plates 18, 17 are welded to the inner tube 20 and outer tube 11.
  • the upper or lower plate is provided with filling openings or nozzles to allow the filling of the two interiors.
  • the resulting in the capsule cavity between outer tube 11 and inner tube 7 is now filled with steel powder of quality 1.8519, wherein the tube 1 is uniformly coated with the powder.
  • a powder of quality Stellite 1 is filled in the cavity between inner tube 7 and inner tube 20. This second powder can serve the wear or corrosion protection of the finished body.
  • the body is now evacuated and the filler neck and the evacuation tube are gas-tight welded.
  • the capsule with the powder mixture is exposed in a hot isostatic press at a temperature of about 1000 ° C for a holding time of 3 hours to a pressure of 1000 bar and slowly cooled in the HIP plant.
  • the ready to use line for the temperature control is readily obtained, if necessary, depending on still open the sealed end 3 through a hole needed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
EP04405696A 2004-11-11 2004-11-11 Procédé de fabrication d'un pièce tubulaire en métal incorporant un échangeur thermique dans la gaine Withdrawn EP1657010A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04405696A EP1657010A1 (fr) 2004-11-11 2004-11-11 Procédé de fabrication d'un pièce tubulaire en métal incorporant un échangeur thermique dans la gaine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405696A EP1657010A1 (fr) 2004-11-11 2004-11-11 Procédé de fabrication d'un pièce tubulaire en métal incorporant un échangeur thermique dans la gaine

Publications (1)

Publication Number Publication Date
EP1657010A1 true EP1657010A1 (fr) 2006-05-17

Family

ID=34932356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04405696A Withdrawn EP1657010A1 (fr) 2004-11-11 2004-11-11 Procédé de fabrication d'un pièce tubulaire en métal incorporant un échangeur thermique dans la gaine

Country Status (1)

Country Link
EP (1) EP1657010A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008150177A1 (fr) * 2007-06-06 2008-12-11 Tool Tech As Procédé de production de diverses pièces découpées massives de raccordements pour canalisation encapsulés au moyen d'un moulage à partir de poudres
EP2127786A1 (fr) 2008-05-29 2009-12-02 Kennametal HTM AG Corps de chauffage pour milieux d'écoulement et son procédé de fabrication
WO2010041957A1 (fr) * 2008-10-10 2010-04-15 Tool-Tech As Procédé de production d'une cuve sous pression sans soudure, résistant aux acides
EP2452766A1 (fr) * 2010-11-10 2012-05-16 Sandvik Intellectual Property AB Procédé de fabrication d'un composant doté de cavités internes
WO2013058977A1 (fr) 2011-10-17 2013-04-25 Evans Capacitor Company Article fritté et procédé de fabrication d'article fritté
EP2279324B1 (fr) * 2008-03-20 2014-05-21 Advanced Interactive Materials Science Limited Stator pour moteur hélicoïdal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1010240A (fr) * 1950-01-31 1952-06-09 Michigan Powdered Metal Produc Procédé de fabrication d'objets en métal en poudre et objets obtenus par ce procédé
EP0426101A2 (fr) * 1989-11-02 1991-05-08 Reifenhäuser GmbH & Co. Maschinenfabrik Elément de cylindre d'une extrudeuse pour un dispositif à deux vis et procédé de fabrication
FR2796322A1 (fr) * 1999-12-24 2001-01-19 Commissariat Energie Atomique Piece mecanique apte a etre thermalisee par la circulation interne d'un fluide, et procede de fabrication d'une telle piece
DE10236523A1 (de) * 2002-08-09 2004-02-19 Behr Gmbh & Co. Werkzeug mit einer formgebenden Oberfläche und Verfahren zur Herstellung eines Werkzeugs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1010240A (fr) * 1950-01-31 1952-06-09 Michigan Powdered Metal Produc Procédé de fabrication d'objets en métal en poudre et objets obtenus par ce procédé
EP0426101A2 (fr) * 1989-11-02 1991-05-08 Reifenhäuser GmbH & Co. Maschinenfabrik Elément de cylindre d'une extrudeuse pour un dispositif à deux vis et procédé de fabrication
FR2796322A1 (fr) * 1999-12-24 2001-01-19 Commissariat Energie Atomique Piece mecanique apte a etre thermalisee par la circulation interne d'un fluide, et procede de fabrication d'une telle piece
DE10236523A1 (de) * 2002-08-09 2004-02-19 Behr Gmbh & Co. Werkzeug mit einer formgebenden Oberfläche und Verfahren zur Herstellung eines Werkzeugs

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2461007B (en) * 2007-06-06 2013-01-23 Tool Tech As A method of producing various massive blanks of encapsulated pipe connections by virtue of powder moulding
WO2008150177A1 (fr) * 2007-06-06 2008-12-11 Tool Tech As Procédé de production de diverses pièces découpées massives de raccordements pour canalisation encapsulés au moyen d'un moulage à partir de poudres
GB2461007A (en) * 2007-06-06 2009-12-23 Tool Tech As A method of producing various massive blanks of encapsulated pipe connections by virtue of powder moulding
EP2279324B1 (fr) * 2008-03-20 2014-05-21 Advanced Interactive Materials Science Limited Stator pour moteur hélicoïdal
EP2127786A1 (fr) 2008-05-29 2009-12-02 Kennametal HTM AG Corps de chauffage pour milieux d'écoulement et son procédé de fabrication
WO2010041957A1 (fr) * 2008-10-10 2010-04-15 Tool-Tech As Procédé de production d'une cuve sous pression sans soudure, résistant aux acides
US8894913B2 (en) 2008-10-10 2014-11-25 Tool-Tech As Method for production of an acid proof, seemless pressure vessel
EP2452766A1 (fr) * 2010-11-10 2012-05-16 Sandvik Intellectual Property AB Procédé de fabrication d'un composant doté de cavités internes
WO2012062786A1 (fr) * 2010-11-10 2012-05-18 Sandvik Intellectual Property Ab Procédé de fabrication d'un composant pourvu de cavités internes
US20130224058A1 (en) * 2010-11-10 2013-08-29 Sandvik Intellectual Property Ab Method for manufacturing a component with internal cavities
US9463508B2 (en) 2010-11-10 2016-10-11 Sandvik Intellectual Property Ab Method for manufacturing a component with internal cavities
WO2013058977A1 (fr) 2011-10-17 2013-04-25 Evans Capacitor Company Article fritté et procédé de fabrication d'article fritté
CN103875048A (zh) * 2011-10-17 2014-06-18 埃文斯电容公司 烧结制品和制备烧结制品的方法
EP2769394A4 (fr) * 2011-10-17 2015-08-05 Evans Capacitor Company Article fritté et procédé de fabrication d'article fritté
CN103875048B (zh) * 2011-10-17 2016-10-26 埃文斯电容公司 烧结制品和制备烧结制品的方法

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