EP3181250A1 - Procédé de fabrication de pièces métalliques creuses - Google Patents
Procédé de fabrication de pièces métalliques creuses Download PDFInfo
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 238000010273 cold forging Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000003856 thermoforming Methods 0.000 claims description 2
- 238000005242 forging Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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)
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)
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 |
-
2015
- 2015-12-15 AT ATA51067/2015A patent/AT518129B1/de active
-
2016
- 2016-12-02 EP EP16201891.5A patent/EP3181250B1/fr active Active
- 2016-12-02 ES ES16201891T patent/ES2760949T3/es active Active
- 2016-12-08 MX MX2016016264A patent/MX2016016264A/es unknown
Patent Citations (4)
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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