EP3181250A1 - Procédé de fabrication de pièces métalliques creuses - Google Patents

Procédé de fabrication de pièces métalliques creuses Download PDF

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Publication number
EP3181250A1
EP3181250A1 EP16201891.5A EP16201891A EP3181250A1 EP 3181250 A1 EP3181250 A1 EP 3181250A1 EP 16201891 A EP16201891 A EP 16201891A EP 3181250 A1 EP3181250 A1 EP 3181250A1
Authority
EP
European Patent Office
Prior art keywords
lining
jacket tube
material layer
tube
preformed
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.)
Granted
Application number
EP16201891.5A
Other languages
German (de)
English (en)
Other versions
EP3181250B1 (fr
Inventor
Robert Koppensteiner
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.)
GFM GmbH
Original Assignee
GFM GmbH
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 GFM GmbH filed Critical GFM GmbH
Publication of EP3181250A1 publication Critical patent/EP3181250A1/fr
Application granted granted Critical
Publication of EP3181250B1 publication Critical patent/EP3181250B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/12—Riveting machines with tools or tool parts having a movement additional to the feed movement, e.g. spin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • 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

Definitions

  • the invention relates to a method for producing hollow metallic workpieces from a jacket tube having a profiled inner surface and a lining of the following inner lining of a material layer of the jacket tube forming a composite material layer, wherein the jacket tube is forged over a mandrel.
  • a disadvantage is that by the subsequent application of the liner of an elastomeric, thermoplastic, ceramic or metallic material on the coiled inner surface of the jacket tube made of steel depending on the respectively selected taking into account the material of the lining application method, such as galvanic or electrolytic deposition, casting , Firing, plasma spraying or thermofixing, the adhesion of the lining to the profiled casing pipe often can not meet higher requirements.
  • the material of the lining application method such as galvanic or electrolytic deposition, casting , Firing, plasma spraying or thermofixing
  • the invention is thus based on the object, a method for producing hollow metallic workpieces with a pronounced profiling of the inner surface in such a way that in addition to simple manufacturing conditions, a high dimensional stability can be ensured.
  • the invention solves the stated object in that the material layer of the lining is introduced into the preformed in approaching the profiled inner surface of the casing, before the preformed casing tube with the material layer of the lining over the profiled inner surface of the workpiece forcing the mandrel.
  • a jacket tube is prepared with an approximated to the profiled inner surface of the workpiece profile shape, in which a later lining resulting material layer is introduced, by a subsequent common cold forging the preformed jacket tube and introduced into the casing material layer via a corresponding profiled inner surface of the workpiece profiled mandrel not only a metallurgically advantageous, intimate Achieved connection between the jacket tube and the lining, but also a high dimensional accuracy for the profiled inner surface of the hollow workpiece can be achieved without having to accept a post-processing of this inner surface.
  • the profiling therefore, only the possible forging via a mandrel is to be assumed.
  • the casing tube and the material layer of the lining can be first connected by a hot deformation through a mandrel into a composite body before the composite body by a cold forging over the the profiled inner surface defining mandrel is formed to the workpiece.
  • the hot deformation of the jacket body together with the material layer of the lining introduced into the jacket tube on the one hand achieves a metallurgically advantageous bonding effect between the metallic materials of the jacket tube and the lining and, on the other hand, enables an additional step of preforming in approximation to the profiled inner surface of the workpiece to be produced. This means that the cold deformation of larger local displacements of the material layer relative to the profiled inner surface of the casing tube are prevented and is to ensure the cold worked only the exact profiled inner surface of the workpiece.
  • the material layer of the lining can be introduced in different ways into the preformed jacket tube, since it only depends on a substantially uniform distribution of the material layer of the lining over the pre-profiled inner surface of the jacket tube.
  • the material layer of the lining can therefore be applied for example by spraying, spraying or casting and the like.
  • On the preformed inner surface of the jacket tube it is also possible to introduce this layer of material in the form of a resiliently biased wire helix in the jacket tube to apply after insertion of the wire helix an application of the wire turns to the preformed inner surface of the jacket tube under the to achieve resilient bias.
  • the workpiece according to the schematic representation of the Fig. 1 and 2 has a jacket 1 with a profiled inner surface 2 and a lining 3, which follows the profiled inner surface 2 of the shell 1 and thus forms one of the profiled inner surface 2 of the shell 1 corresponding inner surface 4 of the workpiece.
  • the intended for the lining 3 material layer is prefabricated in the form of a lining tube 7, according to the FIGS.
  • the preformed liner tube 7 and the preformed jacket tube 5 can thus according to the FIGS. 7 and 8 nested together to then together by cold forging over a mandrel to the composite body of the workpiece according to the Fig. 1 and 2 to be transformed.
  • thermoforming for the intimate connection of the jacket tube 5 and the lining tube 7 to a composite body prior to cold working to prevent such a local displacement of the material layer of the liner relative to the jacket tube.
  • the invention is not bound to such introduction of the material layer in the preformed jacket tube 5, it depends only on, for the common forging of the jacket tube 5 and Lining 3 provide a corresponding material layer of the liner 3 within the casing tube 5, which can be achieved for example by spraying or casting a corresponding material layer on the pre-profiled inner surface 6 of the casing tube 5.
  • the introduction of a corresponding layer of material of the liner 3 can thus be made in any way that a subsequent common forging of the jacket tube. 5 and the introduced material layer of the liner 3 allowed over a profiled mandrel.
  • this non-uniform material can flow in the region of the lining in order to maintain a uniform thickness of the lining 3 of the finished workpiece 3 be taken into account by introducing the material layer with corresponding thickness differences, so that after the cold forging required for the completion of the workpiece, a uniformly thick lining 3 is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP16201891.5A 2015-12-15 2016-12-02 Procédé de fabrication de pièces métalliques creuses Active EP3181250B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA51067/2015A AT518129B1 (de) 2015-12-15 2015-12-15 Verfahren zum Herstellen hohler metallischer Werkstücke

Publications (2)

Publication Number Publication Date
EP3181250A1 true EP3181250A1 (fr) 2017-06-21
EP3181250B1 EP3181250B1 (fr) 2019-09-18

Family

ID=57471726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16201891.5A Active EP3181250B1 (fr) 2015-12-15 2016-12-02 Procédé de fabrication de pièces métalliques creuses

Country Status (4)

Country Link
EP (1) EP3181250B1 (fr)
AT (1) AT518129B1 (fr)
ES (1) ES2760949T3 (fr)
MX (1) MX2016016264A (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947063C (de) * 1941-12-28 1956-08-09 Gustav Appel Maschinenfabrik Verfahren zum Herstellen von Mehrlagenrohren auf Haemmermaschinen und Mehrlagenrohr
WO1999031389A2 (fr) * 1997-12-18 1999-06-24 Baker Hughes Incorporated Procede de fabrication de stators pour pompes de type moineau
US20070261286A1 (en) * 2006-02-23 2007-11-15 Sturm, Ruger & Company, Inc. Composite firearm barrel reinforcement
WO2014169365A2 (fr) * 2013-08-23 2014-10-23 Vallourec Tubos Do Brasil S.A. Tuyau à couches multiples

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947063C (de) * 1941-12-28 1956-08-09 Gustav Appel Maschinenfabrik Verfahren zum Herstellen von Mehrlagenrohren auf Haemmermaschinen und Mehrlagenrohr
WO1999031389A2 (fr) * 1997-12-18 1999-06-24 Baker Hughes Incorporated Procede de fabrication de stators pour pompes de type moineau
US20070261286A1 (en) * 2006-02-23 2007-11-15 Sturm, Ruger & Company, Inc. Composite firearm barrel reinforcement
WO2014169365A2 (fr) * 2013-08-23 2014-10-23 Vallourec Tubos Do Brasil S.A. Tuyau à couches multiples

Also Published As

Publication number Publication date
AT518129A1 (de) 2017-07-15
ES2760949T3 (es) 2020-05-18
MX2016016264A (es) 2018-06-07
AT518129B1 (de) 2019-08-15
EP3181250B1 (fr) 2019-09-18

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