EP2946850A1 - Procédé destiné au forgeage d'une pièce à usiner métallique - Google Patents

Procédé destiné au forgeage d'une pièce à usiner métallique Download PDF

Info

Publication number
EP2946850A1
EP2946850A1 EP14169695.5A EP14169695A EP2946850A1 EP 2946850 A1 EP2946850 A1 EP 2946850A1 EP 14169695 A EP14169695 A EP 14169695A EP 2946850 A1 EP2946850 A1 EP 2946850A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
forging
forging tools
tools
group
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Withdrawn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
EP14169695.5A
Other languages
German (de)
English (en)
Inventor
Dr. Paul-Josef Nieschwitz
Dr. Peter Dreinhoff
Dr. Frederik Knauf
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.)
SMS Group GmbH
Original Assignee
SMS Meer 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 SMS Meer GmbH filed Critical SMS Meer GmbH
Priority to EP14169695.5A priority Critical patent/EP2946850A1/fr
Publication of EP2946850A1 publication Critical patent/EP2946850A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/04—Shaping in the rough solely by forging or pressing

Definitions

  • the invention relates to a method for forging a metallic workpiece in a forging press, wherein the workpiece is conveyed in a longitudinal direction and intermittently deformed by a number of forging tools, wherein the workpiece is conveyed between the periodic engagement of the forging tools by a bite distance in the longitudinal direction.
  • the generic method is suitable for shaping and for stretching a metallic workpiece.
  • a great advantage of this method is a high degree of flexibility, since with relatively simple forging tools, a wide variety of product shapes of different sizes can be manufactured precisely from metallic workpieces.
  • An important requirement for the quality of the forged product is an equally good forging of the workpiece core. This is especially true against the background that voids and other quality-reducing inclusions in the workpiece to be eliminated.
  • the forging of the workpiece is usually a radial forging.
  • the first group and the second group of the Schmlieewerkmaschinee together may consist of a total of four forging tools, which are arranged around the workpiece.
  • the four blacksmith tools will be there preferably used uniformly around the circumference of the tool arranged around.
  • the first group of forging tools may contact the workpiece diagonally along a first direction
  • the second group of forging tools may contact the workpiece in a second direction, the second direction being offset from the first direction by 90 ° about the longitudinal axis of the workpiece.
  • the extent of the forging tools in the longitudinal direction is preferably at least 200 mm, more preferably at least 260 mm.
  • the bite distance is preferably between 30% and 90%, preferably between 40% and 80% of the current block diameter of the workpiece.
  • the current block diameter is the actual clear distance of those surfaces of the workpiece which are acted on by the tools before their upcoming deformation.
  • the bite distance is preferably between 200 mm and 320 mm, preferably between 230 mm and 290 mm.
  • the values mentioned have proven their worth, in particular with a block diameter of the workpiece between 600 mm and 800 mm, especially with a block diameter of 700 mm.
  • All forging tools can machine the workpiece at the same axial position.
  • the workpiece can be a flat web.
  • the method can be used to produce a steel bar.
  • the method described thus depends on the fact that the forging tools are subdivided into two groups and these two groups then process the workpiece after each movement of the workpiece by half the bite distance.
  • the proposed method in complete equivalence, also includes the possibility of dividing the forging tools into three, four or more groups and then processing them by one of the groups after the workpiece has been moved one third, one quarter or a correspondingly smaller part of the bite distance ,
  • an optimization of the core forging can be achieved by the bite offset (half value of the bite distance).
  • the forging tools are usually used in pairs. It is achieved advantageously a very homogeneous Kernverschmiedung.
  • a further advantage is that existing forging equipment can be used to carry out the proposed method, since the type and number of forging tools does not change, only their operation.
  • Fig. 1 and Fig. 2 is - but only very schematically - a radial forging machine shown on which a workpiece 1 processed, that is forged.
  • the forging is done by radial forging. Accordingly, the four forging tools 2, 3, 4 and 5 provided here are moved radially toward the workpiece 1 (in the direction of the arrow). The four forging tools 2, 3, 4, 5 are placed at an axial position 6.
  • Fig. 2 is the arrangement of the four forging tools 2, 3, 4, 5 indicated around the workpiece 1 around.
  • a deformation of the workpiece 1 is accordingly produced by application of a tool 2, 3, 4, 5, in particular by a shock or impulse.
  • the forging is always done in pairs, ie the forging tools 2 and 4 work together and the forging tools 3 and 5.
  • the workpiece 1 moves translationally in the longitudinal direction T, wherein each biting cycle a bite distance s is covered (see FIGS. 3 and 4 ).
  • the bite distance s is generally the conveying distance in the longitudinal direction T until a tool 2, 3, 4, 5 considered is used again.
  • a first group of forging tools namely the forging tools 2 and 4
  • the workpiece 1 is then at half the bite distance s (s FIGS. 3 and 4 ) in the longitudinal direction T promoted; in this position, the loading is carried out by a second group of forging tools, namely by the forging tools 3 and 5.
  • the workpiece 1 is in turn promoted by a further half bite distance s in the longitudinal direction T; In this position, in turn, an admission of the workpiece 1 by the first group of forging tools 2 and 4 takes place.
  • the bite distance s in the exemplary embodiment is 260 mm.
  • the tool length, seen in the longitudinal direction T, is thus at least 260 mm.
  • a flat track is manufactured. Accordingly, the workpiece 1 is in each case conveyed by 130 mm per cycle and forged with the appropriate group of forging tools.
  • This process is carried out along the entire workpiece 1, so that subsequently results in a material which is characterized by a high degree of homogeneity. Ie. the nuclear smithing is optimized.
EP14169695.5A 2014-05-23 2014-05-23 Procédé destiné au forgeage d'une pièce à usiner métallique Withdrawn EP2946850A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14169695.5A EP2946850A1 (fr) 2014-05-23 2014-05-23 Procédé destiné au forgeage d'une pièce à usiner métallique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14169695.5A EP2946850A1 (fr) 2014-05-23 2014-05-23 Procédé destiné au forgeage d'une pièce à usiner métallique

Publications (1)

Publication Number Publication Date
EP2946850A1 true EP2946850A1 (fr) 2015-11-25

Family

ID=50842077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14169695.5A Withdrawn EP2946850A1 (fr) 2014-05-23 2014-05-23 Procédé destiné au forgeage d'une pièce à usiner métallique

Country Status (1)

Country Link
EP (1) EP2946850A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106424496A (zh) * 2016-11-17 2017-02-22 山西太钢不锈钢股份有限公司 一种初轧方坯径锻锻造的方法
WO2022236345A1 (fr) * 2021-05-12 2022-11-17 Gfm Gmbh Procédé de formage à chaud d'un lingot de forge coulé à l'aide d'un dispositif de forgeage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE492281A (fr) *
US2114302A (en) * 1936-11-10 1938-04-19 Babcock & Wilcox Tube Company Method of making round billets
GB840927A (en) * 1956-09-12 1960-07-13 Kralowetz Bruno Stretch-forging machine
FR1271550A (fr) * 1960-07-19 1961-09-15 Machine universelle à ébaucher
US4941342A (en) * 1988-02-06 1990-07-17 Eumuco Aktiengesellschaft Fur Maschinenbau Multi-ram forging assembly
US5732588A (en) * 1994-12-24 1998-03-31 Pahnke Engineering Gmbh & Co. K.G. Double press

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE492281A (fr) *
US2114302A (en) * 1936-11-10 1938-04-19 Babcock & Wilcox Tube Company Method of making round billets
GB840927A (en) * 1956-09-12 1960-07-13 Kralowetz Bruno Stretch-forging machine
FR1271550A (fr) * 1960-07-19 1961-09-15 Machine universelle à ébaucher
US4941342A (en) * 1988-02-06 1990-07-17 Eumuco Aktiengesellschaft Fur Maschinenbau Multi-ram forging assembly
US5732588A (en) * 1994-12-24 1998-03-31 Pahnke Engineering Gmbh & Co. K.G. Double press

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106424496A (zh) * 2016-11-17 2017-02-22 山西太钢不锈钢股份有限公司 一种初轧方坯径锻锻造的方法
WO2022236345A1 (fr) * 2021-05-12 2022-11-17 Gfm Gmbh Procédé de formage à chaud d'un lingot de forge coulé à l'aide d'un dispositif de forgeage

Similar Documents

Publication Publication Date Title
WO2012034967A1 (fr) Dispositif et procédé pour fabriquer des profilés creux au moins partiellement fermés au moyen de demi-matrices rotatives avec un temps de cycle réduit
DE102013100302B4 (de) Verfahren zum Schmieden, insbesondere Streckschmieden, von metallischen Werkstücken
EP3094440B1 (fr) Procédé de réalisation de passages par cisaillage et utilisation dudit
EP2946850A1 (fr) Procédé destiné au forgeage d'une pièce à usiner métallique
DE102014212732B4 (de) Verfahren und Anstauchvorrichtung zum Herstellen von abgesetzten Werkstücken, wie Wellen oder Stäbe
DE102013104038B4 (de) Verfahren und Vorrichtung zur plastischen Umformung eines rohrförmigen Werkstückes
DE102010046808B4 (de) Verfahren und Einrichtung zum Herstellen eines Führungssegmentes für Pendelrollenlager oder dergleichen
EP2616198B1 (fr) Dispositif et procédé pour fabriquer des profilés creux au moins partiellement fermés avec un temps de cycle réduit
EP2165797A1 (fr) Dispositif de traitement pour pièces usinées soudées
EP3206812B1 (fr) Presse de traitement en temps masqué
EP2711570A2 (fr) Procédé de fabrication d'une cage de roulement
DE202012012599U1 (de) Vorrichtung zum Herstellen von Hohlprofilen
DE102017118505B4 (de) Verfahren zur Herstellung eines Aktivelements und entsprechendes Aktivelement
DE102016007550B4 (de) Verfahren und Vorrichtung zur Reduzierung einer Ovalität eines Konstruktionselements mit einem im Wesentlichen kreisringförmigen Querschnitt
DE2655323A1 (de) Vorrichtung zum umformen eines einzelnen, metallischen werkstuecks
DE102014214708B3 (de) Verfahren zum Herstellen einer Mehrfach-Eisenbahnradsatzwelle sowie Radialschmiedemaschine
DE2212013A1 (de) Einrichtung zur automatischen Entfernung des Außenstauchgrates stumpfgeschweißter Metall- und Plastverbindungen
AT274716B (de) Verfahren und Vorrichtung zum Profilieren von Werkstücken
DE3922243C2 (fr)
DE102015119927A1 (de) Verfahren zum Bearbeiten eines Werkstücks und Linearhammer
EP3030377A1 (fr) Dispositif et procédé pour traiter une pièce métallique en mouvement dans une direction de transport
DE60115574T2 (de) Verfahren zum Stanzen eines Zuschnittes aus einem Metallband
EP2745954A2 (fr) Procédé de forgeage
DE202017102146U1 (de) Mehrstückiges Rollwerkzeug mit einem dünnen Profilteil
DE202011003535U1 (de) Vorrichtung zum Einbringen einer Öffnung in ein Werkstück

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20151215