EP3086891A1 - Forging tool for the manufacture of a shaped rolled ring, notably for the manufacture of a turbomachine disc - Google Patents
Forging tool for the manufacture of a shaped rolled ring, notably for the manufacture of a turbomachine discInfo
- Publication number
- EP3086891A1 EP3086891A1 EP15705675.5A EP15705675A EP3086891A1 EP 3086891 A1 EP3086891 A1 EP 3086891A1 EP 15705675 A EP15705675 A EP 15705675A EP 3086891 A1 EP3086891 A1 EP 3086891A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- manufacturing
- rolling
- disk
- ring
- manufacture
- 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 description 18
- 238000005242 forging Methods 0.000 title description 6
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910000601 superalloy Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000007373 indentation Methods 0.000 description 5
- 229910018487 Ni—Cr Inorganic materials 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 230000001010 compromised effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000816 inconels 718 Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
Definitions
- One aspect of the present invention is a forging tool for the manufacture of a shaped rolled-up ring, in particular for the manufacture of a turbomachine disk, made with such a tool.
- the object of the invention is to improve a roughing stage of manufacture of certain turbomachine discs, which is used forging, and more specifically to a rolling.
- a blank of the crown disc, heated to a sufficient temperature, is introduced into a tool which reduces its section while enlarging the radius of the crown. This contributes to obtain discs of relatively large diameter, with large bores in the center.
- the manufacture of the disc is then continued by other methods.
- a tool with two mandrels, however, lacking the original features of the invention, is described in DE-299 07 807 U.
- the window of temperatures suitable for forging is much smaller for such alloys than for conventional alloys such as Inconel 718, commonly used so far for such applications.
- the parts, out of the oven and subjected to rolling take little time to cool too much in the air, and then it is observed that cracks can appear in the rolled crown.
- the quality of the crown is then compromised, since the defects created do not disappear during the subsequent stages of manufacture.
- the rolling operation is therefore carried out in practice in several steps, between which the blank of the disk is put back to heat to the desired temperature. This can greatly lengthen the manufacturing time, since many of these heat rebates (typically one to three) are in practice necessary. In some embodiments, their number is reduced by accepting a beginning of appearance of the cracks, which are then removed by grinding the blank at their places before resuming heating, then rolling. It is clear, however, that grinding itself consumes time as well as matter.
- one aspect of the invention is a tool for rolling a piece in the form of a crown, comprising two mandrels rotating about axes parallel to each other and each comprising a circular impression of receiving the crown, the impressions comprising a bottom face and side faces, characterized in that the bottom face of each of the mandrels is connected to the side faces by curved portions having radii of curvature of between 10 and 20 mm.
- the crowns have a diameter of 300 mm to 1500 mm outside this rolling, and are made of a nickel-based alloy or nickel-chromium.
- the radii of curvature can typically be included preferably from 12 mm to 15 mm.
- the bottom face is cylindrical or conical, defined by a rectilinear generatrix, and the lateral faces are conical, and defined by rectilinear generators too.
- the crowns whose section is essentially polygonal and generally quadrangular between the bottom faces defining their inner radius and their outer radius, and the lateral faces defining their lateral sides, normally acquire sharp-angled connections between these faces during rolling achieved with known tools.
- these connections arrive in front of the curved portions, which crush the sharp corners and maintain the connections to radii of curvature. Cracks forming first at sharp angles, they can not appear, or more easily, with the invention.
- Another aspect is a method of manufacturing a turbomachine disk, comprising a rolling roughing step where the disk arrives in the form of a ring and a section of which is reduced by rolling, characterized in that said step is accomplished by a tooling according to the above, the ring being of substantially polygonal section and having corners located on the curved portions, and also curved during the process.
- FIG. 1 is a general view of the tool used
- the invention is part of a method of manufacturing a turbomachine disk, in particular of large diameter, and constitutes a first step of this method, the following, which are not modified, will not be described. It relates to the rolling of a ring 7, which is a blank of the disc, to reduce its section, increasing its diameter. It uses a tool which comprises, as shown in Figure 1, a motor chuck 1 and a crazy mandrel 2, located side by side, and rotating about axes 01 and 02 parallel, and vertical in the figure.
- the motor mandrel 1 contains a shaft 3, which belongs to the drive motor not shown and which rotates, while the idler mandrel 2 contains a shaft 4, freely mounted in bearings.
- the mandrels 1 and 2 each comprise a circular imprint 5 or 6 around the axis 01 or 02 respectively, the indentations 5 and 6 being located at the same height and therefore having portions coming face to face.
- the ring 7 to be laminated is retained there between the indentations 5 and 6. It also extends around the idler mandrel 2, and its most opposite part to the in-between of the sleeves 1 and 2, where the rolling occurs. extends at a distance from said idler mandrel 2, whose diameter is smaller, and in a horizontal rabbet 8 delimited between two supports 9 and 10.
- FIG. 2 shows that the indentations 5 and 6 each comprise a bottom face 11, and two lateral faces 12 and 13 connecting to an outer face 14 of the respective mandrel 1 or 2.
- the bottom faces 11 are cylindrical, and the faces lateral 12 and 13 conical, all these faces being defined by rectilinear generators.
- the faces of the indentations 5 and 6 could be defined by other shapes, but provided that sharp angles are avoided for reasons which will now be described in detail: according to the invention, the bottom faces 11 are joined to the side faces 12 and 13 by respective connectors 15 and 16, which are curved, concavely sectioned surface portions which open outwardly from the indentations 5 and 6, and have a radius of curvature which is In the application envisaged, it is preferable to choose between 10 and 20 mm, and even more advantageously between 12 and 15 mm, for diameters of the blanks, typically between 300 and 1500 mm, at the end of rolling.
- the connections 15 and 16 provide a transition without angle, and therefore continuously variable slope between the faces they connect.
- the ring 7 has an approximately polygonal and rectangular section, whose inner and outer faces are tangent to the bottom faces 11, and whose side faces extend in front of the side faces 12 and 13 of the cavities. Connections from the side faces to the inner and outer faces should form sharp corners at the corners of the section of the ring 7, but the rolling produced by the mandrels 1 and 2, which tightens the section of the ring 7, also crushes corners and force to shape to the shape of the portions 15 and 16, which gives the appearance of Figure 3, where the faces of the ring 7 are limited by rounded connections 17.
- This provision avoids forming during rolling right angles that cool very quickly, leading locally to deform the material outside its forgeability window and consequently to create cracks. This arrangement thus prevents cracks from forming and thus ensures good forging quality even at the lower limit of the forgeability temperature range.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1450889A FR3017060B1 (en) | 2014-02-05 | 2014-02-05 | FORGING TOOLS FOR MANUFACTURING A ROLLED SHAPED CROWN, IN PARTICULAR FOR MANUFACTURING A TURBOMACHINE DISK |
PCT/FR2015/050229 WO2015118249A1 (en) | 2014-02-05 | 2015-02-02 | Forging tool for the manufacture of a shaped rolled ring, notably for the manufacture of a turbomachine disc |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3086891A1 true EP3086891A1 (en) | 2016-11-02 |
EP3086891B1 EP3086891B1 (en) | 2017-12-27 |
Family
ID=50483158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15705675.5A Active EP3086891B1 (en) | 2014-02-05 | 2015-02-02 | Forging tool for the manufacture of a shaped rolled ring, notably for the manufacture of a turbomachine disc |
Country Status (8)
Country | Link |
---|---|
US (1) | US10543523B2 (en) |
EP (1) | EP3086891B1 (en) |
CN (1) | CN105934293B (en) |
BR (1) | BR112016017512B1 (en) |
CA (1) | CA2945500C (en) |
FR (1) | FR3017060B1 (en) |
RU (1) | RU2687324C1 (en) |
WO (1) | WO2015118249A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104226868B (en) * | 2014-09-24 | 2017-01-11 | 武汉理工大学 | Valve body composite rolling ring forming method for ball valve |
FR3138336A1 (en) * | 2022-07-28 | 2024-02-02 | Safran Aircraft Engines | Process for obtaining a metallic annular crown |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR349947A (en) * | 1904-05-28 | 1905-07-27 | Louis Gasne | Rolling process for wheel tires |
SU651525A1 (en) * | 1977-01-03 | 1979-10-25 | Предприятие П/Я Г-4585 | Unit for rolling-out rings |
DD235577A1 (en) | 1985-04-01 | 1986-05-14 | Waelzlager Normteile Veb | PROCESS FOR PROFILING COLD ROLLING OF RINGS WITH TANGENTIAL EXPANSION |
SU1488083A1 (en) * | 1987-03-25 | 1989-06-23 | 1-Й Государственный Подшипниковый Завод | Apparatus for expanding rings |
JPH03268833A (en) * | 1990-03-16 | 1991-11-29 | Daido Steel Co Ltd | Manufacture of different profile product by cold rolling mill |
JP3429157B2 (en) * | 1997-04-03 | 2003-07-22 | 山陽特殊製鋼株式会社 | Large diameter ring manufacturing method of austenitic stainless steel |
DE29907807U1 (en) * | 1999-04-28 | 1999-07-01 | Dr. Schiller Walz- und Werkzeugtechnik GmbH, 14943 Luckenwalde | Device for producing ring-shaped workpieces by cold forming |
JP4202000B2 (en) * | 2000-07-10 | 2008-12-24 | トヨタ自動車株式会社 | Mandrel for ring rolling |
FR2873940B1 (en) | 2004-08-03 | 2008-01-04 | Snecma Moteurs Sa | METHOD FOR MANUFACTURING CONSTITUENT PIECES OF A HOLLOW DRAW BY ROLLING |
CN201186286Y (en) | 2008-02-28 | 2009-01-28 | 石家庄钢铁有限责任公司 | Roller caliber structure for avoiding goffer produced on surface of large size hot-rolling round steel |
CN101648332B (en) * | 2009-06-10 | 2011-11-09 | 刘岷 | Forming method of precision cold rolled ring of railway bearing ring piece |
CN102688962B (en) * | 2012-05-08 | 2014-06-25 | 天马轴承集团股份有限公司 | Symmetric rolling forming method of large inner-step ring parts |
CN202963336U (en) | 2012-10-12 | 2013-06-05 | 中航卓越锻造(无锡)有限公司 | Special-shaped ring forging die |
CN104148396A (en) * | 2014-06-30 | 2014-11-19 | 贵州安大航空锻造有限责任公司 | Core roller and roll forming method of large inner-step-section ring pieces |
-
2014
- 2014-02-05 FR FR1450889A patent/FR3017060B1/en active Active
-
2015
- 2015-02-02 WO PCT/FR2015/050229 patent/WO2015118249A1/en active Application Filing
- 2015-02-02 EP EP15705675.5A patent/EP3086891B1/en active Active
- 2015-02-02 BR BR112016017512-3A patent/BR112016017512B1/en active IP Right Grant
- 2015-02-02 CN CN201580006131.3A patent/CN105934293B/en active Active
- 2015-02-02 US US15/114,918 patent/US10543523B2/en active Active
- 2015-02-02 CA CA2945500A patent/CA2945500C/en active Active
- 2015-02-02 RU RU2016135654A patent/RU2687324C1/en active
Also Published As
Publication number | Publication date |
---|---|
CA2945500A1 (en) | 2015-08-13 |
CN105934293B (en) | 2018-02-02 |
US20160339504A1 (en) | 2016-11-24 |
EP3086891B1 (en) | 2017-12-27 |
CA2945500C (en) | 2022-09-06 |
US10543523B2 (en) | 2020-01-28 |
CN105934293A (en) | 2016-09-07 |
BR112016017512A2 (en) | 2017-08-08 |
RU2687324C1 (en) | 2019-05-13 |
FR3017060A1 (en) | 2015-08-07 |
WO2015118249A1 (en) | 2015-08-13 |
BR112016017512B1 (en) | 2022-11-01 |
FR3017060B1 (en) | 2016-08-26 |
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