EP0331539A1 - Verfahren zur Herstellung geschmiedeter Rohlinge aus Stangenmaterial durch Stauchen, insbesondere für Kompressorschaufeln und Werkzeugausrüstung zur Durchführung des Verfahrens - Google Patents

Verfahren zur Herstellung geschmiedeter Rohlinge aus Stangenmaterial durch Stauchen, insbesondere für Kompressorschaufeln und Werkzeugausrüstung zur Durchführung des Verfahrens Download PDF

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Publication number
EP0331539A1
EP0331539A1 EP89400273A EP89400273A EP0331539A1 EP 0331539 A1 EP0331539 A1 EP 0331539A1 EP 89400273 A EP89400273 A EP 89400273A EP 89400273 A EP89400273 A EP 89400273A EP 0331539 A1 EP0331539 A1 EP 0331539A1
Authority
EP
European Patent Office
Prior art keywords
container
section
bar
upsetting
cross
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
EP89400273A
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English (en)
French (fr)
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EP0331539B1 (de
Inventor
Alain Georges Henri Lorieux
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.)
Safran Aircraft Engines SAS
Original Assignee
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
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.)
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Publication date
Application filed by Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of EP0331539A1 publication Critical patent/EP0331539A1/de
Application granted granted Critical
Publication of EP0331539B1 publication Critical patent/EP0331539B1/de
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Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B21J5/08—Upsetting
    • 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
    • B21J5/008—Incremental forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K3/00—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like
    • B21K3/04—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like blades, e.g. for turbines; Upsetting of blade roots

Definitions

  • the present invention relates to a process for the production of blanks forged in bar by upsetting as well as a tool intended for the implementation of said process. It also relates to a turbomachine compressor blade, the manufacturing of which involves the application of said upsetting process.
  • Figures 1a, 1b, 1c, 1d of the accompanying drawings illustrate the production of a delivery on a bar B, placed in a container A, during which during four successive operations corresponding respectively to the four figures, a reduction in length l1, l2, l3 and l4 is obtained and the phenomena which have just been reported (buckling then twisting) appear leading to the defects which have been noted (folds and disturbed fiber drawing).
  • the process for manufacturing blanks forged in bar by upsetting which makes it possible to avoid these drawbacks is characterized in that it comprises at least two successive stages: (a) a first upsetting step during which, at least from a first deformation stage, contact is maintained between at least three generatrices of said bar portion and the interior surface of a first container which comprises, between two of said contact lines respectively, a longitudinal hollow outgrowth forming in cross section a lobed part, a second upsetting step during which, at least from a first deformation stage, contact is maintained between the crown generators of the longitudinal protrusions obtained on the first blank at the end of the first step (a) and the inner surface of a second container having an enveloping section of said first blank.
  • the first container has a cruciform section cavity, the cylindrical bar being in contact with the interior surface of the container along four generatrices located at 90 ° from one another and the second container has a square section cavity , with rounded corners, the tops of the protuberances or lobes of the cruciform section of the bar obtained at the end of the first step being in contact respectively with one side of said square.
  • the bar is held in support at least along three generators, thus avoiding any deformation by buckling, while the flow of the alloy can only take place in the direction hollow parts of the container, thus making any torsional deformation impossible.
  • the contact maintained between the end generators of the blank and the walls of the container prevents any deformation by buckling or twisting.
  • the process for manufacturing blanks forged by upsetting according to the invention applies in particular to bar products such as a cylindrical bar 1 shown in its initial form in FIGS. 2a and 2b.
  • the bar 1 is placed in a first container 2 secured to a forging press or machine delivery of a type known per se which is not shown in more detail in the drawings.
  • a forging press or machine delivery of a type known per se which is not shown in more detail in the drawings.
  • this first pushing step (a) one end 1a of the bar 1 is subjected to the pushing action of a punch 3 moved by the pushing and control means of said machine.
  • the portion 1b of the bar 1 subjected to the upsetting thus tends to occupy the available volume of the container 2 limited by the face of the punch 3, which leads to a reduction in length of said portion 1b, accompanied by an increase in the corresponding cross section. .
  • FIGS. 1-10 In the embodiment of the invention shown in FIGS.
  • the first container 2 used during the first step of the upsetting process comprises a cavity 4 which has in cross section a generally cruciform shape composed of four lobed parts 4a, 4b, 4c, 4d arranged symmetrically in pairs, thus providing four generators 5a, 5b, 5c, 5d located at 90 ° from one another, which cooperate with four corresponding generatrices of the repressed portion 1b of the bar 1 by maintaining, from a first deformation stage, permanent contact with them during the repression step .
  • Said contact according to the generators between container and bar becomes necessary from the moment when, during the upsetting operation, there are risks of creating irreversible defects by buckling or twisting. Contact can be made from the start of the operation.
  • the intermediate blank 1c obtained at the end of the first step (a) is placed in a second container 6, as shown diagrammatically in FIGS. 4a and 4b, and its end is again subjected to the pushing action of a punch 7.
  • the second container 6 has a cavity 8 which has in cross section a generally square shape, with rounded corners.
  • Intermediate draft 1c has a cruciform section which reproduces the shape of the cavity 4 of the first container 2 and the generators 1d, 1e, 1f and 1g corresponding to the vertices of the lobed parts of this cruciform section of the intermediate blank 1c are placed in contact with lines of corresponding support of the sides of the cavity square of the second container 6 and in a similar manner to the first step (a), during the second pushing step (b), the contact is also maintained permanently, from a first deformation stage, at the level of these four symmetrical generators two by two, between the external surface of the blank 1c and the surface of the cavity 8 of the second container 6.
  • a variable radial clearance from 0 to 0.5 mm in the present application, can be provided at the start of the second stage between the cooperating generators of the bar and of the container.
  • the initial upsetting portion 1b has a final section 1d of forged blank as shown in FIG. 5 in the embodiment which comes from 'be described.
  • This repressed portion of bar 1b may in particular be intended to constitute the base of a turbomachine blade obtained by forging.
  • 7a, 7b, 7c respectively represent, in a schematic section, other usable forms of container cavity 9a, 9b, 9c, respectively associated with a portion of bar to be pushed back from section 10a, 10b, 10c, 10c, 10d.
  • This bar section at the start is of a shape adapted to the final part to be obtained and, in addition to being cylindrical, can in particular be rectangular or square.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP89400273A 1988-02-03 1989-02-01 Verfahren zur Herstellung geschmiedeter Rohlinge aus Stangenmaterial durch Stauchen, insbesondere für Kompressorschaufeln und Werkzeugausrüstung zur Durchführung des Verfahrens Expired - Lifetime EP0331539B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801227A FR2626507A1 (fr) 1988-02-03 1988-02-03 Procede de fabrication d'ebauches forgees en barre par refoulage, notamment pour aubes de compresseur et outillage de mise en oeuvre
FR8801227 1988-02-03

Publications (2)

Publication Number Publication Date
EP0331539A1 true EP0331539A1 (de) 1989-09-06
EP0331539B1 EP0331539B1 (de) 1994-01-26

Family

ID=9362888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400273A Expired - Lifetime EP0331539B1 (de) 1988-02-03 1989-02-01 Verfahren zur Herstellung geschmiedeter Rohlinge aus Stangenmaterial durch Stauchen, insbesondere für Kompressorschaufeln und Werkzeugausrüstung zur Durchführung des Verfahrens

Country Status (7)

Country Link
US (1) US4970887A (de)
EP (1) EP0331539B1 (de)
JP (1) JPH0732945B2 (de)
CA (1) CA1330172C (de)
DE (1) DE68912620T2 (de)
FR (1) FR2626507A1 (de)
IL (1) IL89160A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695578A1 (fr) * 1992-09-17 1994-03-18 Snecma Outillage de forgeage par refoulement d'ébauches en barres en deux étapes.
EP0786296A1 (de) * 1996-01-29 1997-07-30 CDP Aluminiumtechnik GmbH & Co. KG Verfahren und Vorrichtung zur Herstellung von Halbzeugen
EP3260216A4 (de) * 2015-02-18 2018-10-03 Nippon Steel & Sumitomo Metal Corporation Metallrohr mit verdicktem endteil und verfahren zur herstellung davon

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2745814B2 (ja) * 1989-09-29 1998-04-28 モトローラ・インコーポレイテッド 電解放出デバイスを用いる平面パネル・ディスプレイ
US5030921A (en) * 1990-02-09 1991-07-09 Motorola, Inc. Cascaded cold cathode field emission devices
US5007873A (en) * 1990-02-09 1991-04-16 Motorola, Inc. Non-planar field emission device having an emitter formed with a substantially normal vapor deposition process
US5230134A (en) * 1992-02-11 1993-07-27 Laue Charles E Method of making a petal rod
US5606790A (en) * 1993-04-09 1997-03-04 Charles E. Laue Method of making a two piece pedal rod
US5425286A (en) * 1993-04-09 1995-06-20 Laue; Charles E. Two piece pedal rod and method of making same
JP3680421B2 (ja) * 1996-06-04 2005-08-10 トヨタ自動車株式会社 棒状ワークの鍛造成形方法
US6193821B1 (en) 1998-08-19 2001-02-27 Tosoh Smd, Inc. Fine grain tantalum sputtering target and fabrication process
DE10035224A1 (de) * 2000-07-20 2002-01-31 Man Turbomasch Ag Ghh Borsig Verfahren und Rohling zum Herstellen von rhomboidischen Schaufeln für axiale Strömungsmaschinen
US7213436B2 (en) * 2004-05-28 2007-05-08 Shape Corporation Stamping apparatus for forming rod with configured ends
FR2874339B1 (fr) * 2004-08-23 2008-12-05 Snecma Moteurs Sa Procede de fabrication de pieces constitutives d'une aube creuse par forage sur presse
EP1927413B1 (de) * 2006-12-01 2009-08-19 Topy Kogyo Kabushiki Kaisha Presseschmiedeverfahren
JP4301525B2 (ja) * 2006-12-01 2009-07-22 トピー工業株式会社 圧縮鍛造方法
GB201707896D0 (en) * 2017-05-17 2017-06-28 Rolls Royce Plc Forging apparatus and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2220328A1 (de) * 1973-03-07 1974-10-04 Inst Obrobki Plastycznes
SU804163A1 (ru) * 1979-04-13 1981-02-15 Горьковский Конструкторско-Технологическийинститут Холодновысадочного И Пружинногопроизводства Инструмент дл предварительнойВыСАдКи издЕлий C МНОгОгРАННыМ СЕчЕНиЕМ
SU821016A1 (ru) * 1979-06-08 1981-04-15 Предприятие П/Я Г-4585 Способ высадки труб
FR2494606A1 (fr) * 1980-11-21 1982-05-28 Honda Motor Co Ltd Procede de refoulement electrique et dispositif pour la mise en oeuvre de ce procede

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3154849A (en) * 1961-01-18 1964-11-03 Thompson Ramo Wooldridge Inc Metal forging process
US3392569A (en) * 1966-02-03 1968-07-16 Columbus Auto Parts Insulator pin
FR2050483B1 (de) * 1969-07-03 1974-12-20 Massey B Et S Ltd
SE371045B (de) * 1969-07-03 1974-11-04 Varta Ag
CH498670A (fr) * 1969-08-18 1970-11-15 Lachaussee Maurice Procédé de fabrication de pièces de forme cylindrique ou prismatique, notamment de flans à partir d'un fil métallique découpé en morceaux de longueur donnée
JPS61193739A (ja) * 1985-02-21 1986-08-28 Toyota Motor Corp 据込み成形方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2220328A1 (de) * 1973-03-07 1974-10-04 Inst Obrobki Plastycznes
SU804163A1 (ru) * 1979-04-13 1981-02-15 Горьковский Конструкторско-Технологическийинститут Холодновысадочного И Пружинногопроизводства Инструмент дл предварительнойВыСАдКи издЕлий C МНОгОгРАННыМ СЕчЕНиЕМ
SU821016A1 (ru) * 1979-06-08 1981-04-15 Предприятие П/Я Г-4585 Способ высадки труб
FR2494606A1 (fr) * 1980-11-21 1982-05-28 Honda Motor Co Ltd Procede de refoulement electrique et dispositif pour la mise en oeuvre de ce procede

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 21 (M-555)[2468], 21 janvier 1987; & JP-A-61 193 739 (TOYOTA MOTOR CORP.) 28-08-1986 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695578A1 (fr) * 1992-09-17 1994-03-18 Snecma Outillage de forgeage par refoulement d'ébauches en barres en deux étapes.
EP0786296A1 (de) * 1996-01-29 1997-07-30 CDP Aluminiumtechnik GmbH & Co. KG Verfahren und Vorrichtung zur Herstellung von Halbzeugen
EP3260216A4 (de) * 2015-02-18 2018-10-03 Nippon Steel & Sumitomo Metal Corporation Metallrohr mit verdicktem endteil und verfahren zur herstellung davon
US10514113B2 (en) 2015-02-18 2019-12-24 Nippon Steel Corporation Metal pipe having thickened end portion, and method of manufacturing same

Also Published As

Publication number Publication date
CA1330172C (fr) 1994-06-14
IL89160A (en) 1992-08-18
EP0331539B1 (de) 1994-01-26
FR2626507B1 (de) 1994-04-22
DE68912620D1 (de) 1994-03-10
JPH01237039A (ja) 1989-09-21
JPH0732945B2 (ja) 1995-04-12
US4970887A (en) 1990-11-20
DE68912620T2 (de) 1994-05-19
FR2626507A1 (fr) 1989-08-04
IL89160A0 (en) 1989-09-10

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