EP2252418A1 - Objet moulé coulé en creux - Google Patents

Objet moulé coulé en creux

Info

Publication number
EP2252418A1
EP2252418A1 EP09720405A EP09720405A EP2252418A1 EP 2252418 A1 EP2252418 A1 EP 2252418A1 EP 09720405 A EP09720405 A EP 09720405A EP 09720405 A EP09720405 A EP 09720405A EP 2252418 A1 EP2252418 A1 EP 2252418A1
Authority
EP
European Patent Office
Prior art keywords
core opening
casting
cast part
part according
hollow cast
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Withdrawn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
EP09720405A
Other languages
German (de)
English (en)
Inventor
Martin Balliel
Christoph Didion
Thomas Duda
Marcel Koenig
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology AG
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 Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP2252418A1 publication Critical patent/EP2252418A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002—Cleaning, working on castings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/21—Manufacture essentially without removing material by casting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45005—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] with third detached member completing interlock [e.g., hook type]
    • Y10T24/45089—Sliding or rotating element

Definitions

  • the invention relates to a hollow cast part which provides at least one production-related core opening with a closure means closing the core opening.
  • casting cores In order to produce the inner structure of such blades, casting cores must be fixed very accurately and stably in the casting mold, the casting cores essentially oriented in the blade longitudinal direction being fixed on two sides, ie on the side of the blade root and on the side of the blade head, by means of relatively large-sized core supports which, in turn, result in large core openings in the finished cast casting, but which do not represent all of the core openings desired for proper function of the casting.
  • relatively large-sized openings on the blade root desired to supply cooling air in the blade inside or remove again, but in particular represent openings on the blade head or blade end unwanted openings through the harmful cooling air leaks occur.
  • DE 199 05 887 C1 proposes to introduce a closure piece closing the core opening in the casting along a recess which extends transversely to the closure Core opening in extends within the casting.
  • a measure presupposes, in addition to the already existing core opening within the casting, a further local removal of material therefrom by which the casting is further mechanically weakened.
  • the invention is based on the object of a hollow cast part which at least one production-related core opening with a closure closing the core opening form such that on the one hand the risk of operational detachment of the closure means is excluded from the casting and on the other hand, the necessary measures for the casting by no means capable of weakening. In particular, it is necessary to avoid additional structural weakening within the casting for purposes of secure anchoring of the closure means within the core opening of the casting.
  • a hollow cast part which provides at least one production-related core opening with a closing the core opening closure means, characterized in that the closure means axially to the core opening in the core opening is inserted and at least one surface area provides, in axial projection to the core opening with a the Cast facing surface area of the casting to be brought into contact.
  • the closure means comes into contact with a surface area of the casting, which extends radially outside a cross-sectional area predetermined by the core opening.
  • the idea underlying the invention relates to the closure of a production-related core opening without weakening the casting area around the core opening by additional material removal, wherein a closure means is inserted axially into the core opening and ensures a secure and gas-tight closure of the core opening by means of a press connection.
  • the core opening and the closure means are designed such that the core opening is closed and sealed by way of a bayonet closure.
  • a virtually effective and particularly simple realization form for the closure of a core opening is provided in the provision of a threaded structure surrounding the core opening with a screw means, preferably in the form of a grub screw, which can be brought into engagement therewith.
  • a screw means preferably in the form of a grub screw, which can be brought into engagement therewith.
  • this can likewise be secured by means of an additional material connection between the closure means and the casting, for example by means of a welded or soldered connection.
  • a further preferred embodiment provides a closure means in the form of a shaped disc, on which on one side a nozzle-like elevation is provided, the shape and size of which is simulated by the core opening radially enclosed by the core opening volume.
  • the closure means is inserted axially from the inside, ie from the sides of the cavity enclosed by the casting, into the core opening, wherein the nozzle-like elevation at least partially fills the core opening and the molding disk rests against the casting inner wall immediately surrounding the core opening.
  • a closure means formed in this way in the core opening there are basically several possibilities, for example by means of clamping, preferably in the form of a press fit, and / or by means of welding or soldering connection.
  • centrifugal forces that occur additionally support the intimate closure of the core opening.
  • a detachment of a closure means designed as a protruding shaping disk can be ruled out, since the centrifugal forces act rather as promoting the closure Closing means. Further details of such a form of implementation can be found in the following description of concrete embodiments.
  • a further solution according to the solution for closing a production-related core opening in a hollow cast part wherein the core opening preferably has a rectangular opening cross-section, provides as a closure element a band-shaped, preferably made of metallic material before, by means of a deformation with one of the Core opening adjacent abutment surface on the casting is compressible such that the core opening is largely fluid-tightly closed by the closure element, wherein the closure mechanism is based on the inherent deformability of the band-shaped closure element and the pressing force generated therewith.
  • FIG. 4a, b cross-sectional view and exploded view of a consisting of screw, washer and nut element closure means
  • Fig. 8a, b top view and cross-sectional view of a band-shaped closure means.
  • FIG. 1 a shows the plan view of a core opening 1, which is attached to the surface of a casting G.
  • the core opening 1 is attached to the frontal surface of a rotor or vane of a flow-rotation machine.
  • the core opening 1 has a cross-sectional area which is composed of a circular area 1 'and in each case two annular sector surfaces 1 "on both sides symmetrically to the circular area or, as in the case illustrated in Figure 1 a, at a so-called joining surface 2 set back from the casting surface, adjacent to a circular peripheral edge 2.
  • the core opening 1 extends with a uniform cross-sectional area through the casting part surrounding the core opening nd.
  • the closure means 3 shown in Figure 1 b which is designed in the manner of a bayonet closure and a foot part 4, a middle part 5 and a head part 6 has.
  • the closure means 3 is manufactured in one piece, nevertheless it is possible to manufacture the closure means 3 also from respectively different materials.
  • the middle part 5 of the closure means 3 is designed in the manner of a solid or hollow cylinder and consequently has a circular cross section which coincides with the circular cross section 1 'which can be inscribed into the core opening 1.
  • the foot part 4 consists of two ring-segment-like collar 4 ', which in addition to the cylinder-shaped central part 5 in axial projection result in an overall cross-section corresponding to the cross-sectional area of the core opening 1 shown in Figure 1 a.
  • the head part 6 is provided which has a circular cross-section which is equal to or smaller than that circular area which is encompassed by the peripheral edge 2 '.
  • a slot-shaped recess 7 is incorporated, which is suitable for the engagement of a screwdriver in order to turn the closure means 3 according to sunken into the core opening insertion within the core opening 1.
  • the head part 6 is circular-disk-shaped and has a disk thickness d, which corresponds to the step depth, with which the joining surface 2 is lowered relative to the surface of the casting along the peripheral edge 2 '.
  • the middle part 5 has an axial extent D, over which the head part 6 is spaced from the foot part 4, which corresponds at least to that material thickness which has the casting in the region of the core opening 1 as wall thickness. It can also be seen from FIG.
  • the closure means 3 shown in FIG. 1 b is inserted axially from above into the core opening, so that the Surface of the head part 6 flush with the surface of the casting G completes. Furthermore, the closure means 3 is rotated by 90 Q with a suitable screwdriver so that the collars 4 'of the foot part 4 pass under the joining surfaces 2 shown in FIG. 1 a and thus form a bayonet-type closure.
  • an additional material connection for example by means of a soldering or welding process, it is possible to secure the closure means 3 against uncontrolled rotation within the core opening 1.
  • a soldering can advantageously take place between the joining face 2 and the collar 4 ', the head part 6 and middle part 5, as an option also between the peripheral edge 2' and the peripheral edge of the head part 6.
  • a pin-like securing element 23a additionally secures the closure means 3 mechanically against rotation within the core opening 1.
  • the head part 6 and the joining surface 2 at the peripheral peripheral edge depending on a groove-shaped recess 9, which are superimposed after rotation of the closure means 3, and in which the securing element 23a can be inserted.
  • FIG. 2 a shows the plan view of an alternative embodiment for a core opening 1, which is likewise provided on the pointed upper side of a gas turbine blading, for example a moving blade L, as in the case of FIG.
  • the cross-sectional area of the core opening 1 is composed of a circular area 1 'and two ring segment surfaces 1 "immediately adjacent to the circular area 1'
  • the joining surfaces 2, which are formed like a ring segment and in plan view together with the cross-sectional area of the core opening 1 form a circular area 1, which is bordered by the peripheral edge 2 ', are, as it were, lowered relative to the surface of the rotor blade L.
  • FIG. 2c shows a longitudinal sectional illustration
  • FIG. 2d shows a sectional drawing along the section AA indicated in FIG. 2c.
  • the closure means 3 has two collar-shaped collar 4 ', which in contrast to the embodiment of Figure 1 each have a collar side edge 41, which lie together along an axis 10. Furthermore, each collar 4 'has a radially extending rib-like elevation 11 along the collar edge 41 which rises above the area 4 "of the respective collar 4.
  • the rib-like elevation 11 serves as a mechanical safeguard against uncontrolled twisting of the closure means 3 within the core opening 1 in the following manner: The closure means 3 is inserted axially into the core opening 1 in alignment with the core opening contour until the head part 6 is flush with the surface of the blade L.
  • the rib-like elevations 1 1 come into abutment with the limiting edges 2 'of the upper joining surface 2.
  • the rib-like elevation 1 1 of both collars 4 'in each case reach below the joint surfaces 2 in the axial direction of sight, this being achieved, for example, by an elastic choice of shape and material of the collars 4'.
  • the rib-like elevations 1 1 directly adjoin the side edges 2 "of the upper joint surface 2 and form with you a force and form fit, by which the closure means 3 is prevented from uncontrolled twisting from the closing position.
  • FIGS. 3a to c A further embodiment for the design of a closure means according to the invention is shown in FIGS. 3a to c.
  • the core openings should be made as small as possible in order to reduce the weakening of the casting due to opening.
  • the core opening 1 shown in FIG. 3a has a smaller cross-sectional area than the core openings described in FIGS. 1 and 2.
  • the core opening 1 is merely composed of a circular area 1 'and a single ring-segment-like area 1'' Insertion of a closure means 3 in the core opening 1 shown in Figure 3a, it is either possible to form a closure means such that, in contrast to the embodiment of Figure 1 b has only a single collar 4 'has.
  • FIGS. 3 b and c which, as it were, provides for the closure means 3 shown in FIG. 1 b two symmetrically opposite collars 4 '.
  • FIG. 3b shows a sectional view through the central part 5 in the axial direction of view of the collar 4 '.
  • FIG. 3c shows a perspective view of the closure means 3.
  • the closure means 3 is halved in the middle according to FIGS.
  • closure means 3 can be assembled from two symmetrically formed halves 13, 14.
  • the two halves 13 are 14 successively joined by the corresponding core opening 1 axially in such a way that first half 13 is inserted axially and is rotated by 180 Q, then we the second half 14 in the remaining core opening 1 is inserted.
  • both halves 13, 14 are rotated by 90 Q , so that both collar 4 'get below the joint surface 2 and produce a symmetrical positive and non-positive connection with the undersides of the joint surface 2.
  • both halves 13, 14 are soldered or welded to the cast part at least to the groove-shaped recesses 9 provided in the head part 6.
  • FIG. 4 a shows a cross section through a casting wall G in which a core opening 1 is introduced. To close the core opening 1 sees the
  • Closure means which is shown in the manner of an exploded view in Figure 4b, an element in the form of a molding disk 15 before, on one side a nozzle-like elevation 16 is provided, the shape and size of which from the core opening 1 radially enclosed core opening volume is modeled.
  • a nozzle-like elevation 16 is provided, the shape and size of which from the core opening 1 radially enclosed core opening volume is modeled.
  • the stubby elevation 16 is cube-shaped and can fill the core opening 1 almost completely (see the cross-sectional view according to FIG. 4a).
  • the attachment of the molding disk 15 takes place axially from the inside of the casting G against the core opening 1, the molding disk 15 projecting radially beyond the core opening 1 and coming into contact with the inner casting wall immediately surrounding the core opening 1.
  • the shaping disk 15 formed with the elevation 16 by way of a press-fit fit and / or an additional material connection, for example by soldering, welding or gluing to the core opening 1 in order to finally seal it.
  • the centrifugal forces occurring are able to additionally drive the shaping disk 15 formed with the nozzle-like elevation 16 into the core opening 1.
  • FIGS. 4 a and b also provides an additional locking device by means of a screw connection.
  • a washer 17 fills a joint area that is recessed in relation to the surface of the casting G in such a way that the washer 17 is flush with the surface of the casting G.
  • a screw means 18 which is brought into engagement with a provided inside the nozzle-like elevation 16 internal thread 16 ', the washer 17 is able to press axially against the inserted from within the casting G in the core opening 1 forming disk 15.
  • an anti-rotation screw 18 also provides in the screw head area groove-shaped recesses 9, which are used for the introduction of soldering or welding material. By capillary forces during the liquefaction of the solder material and / or by previous application of solder material, soldering can take place on the adjoining surfaces of the closure means components 15, 16, 17, 18 and of the casting G.
  • FIG. 5 a shows a shaping disk 15 which, as it were, provides for a stub-like elevation 16 of the shaping disk 15 shown in FIG. 4, but the shaping disk 15 in FIG. 5 a is not equipped with an internal thread. Rather, a wire-shaped mounting aid 19 is provided at the nozzle-like elevation, with which it is possible to add the shaping disk 15 with the nozzle-like elevation 16 attached thereto axially from within the hollow-cast casting G into the correspondingly provided core opening 1.
  • FIG. 5b shows a cross-sectional representation.
  • the joining of the shaping disk 15 with the support-like elevation 16 within the core opening 1 can take place by means of an interference fit. Additionally or alternatively, Switzerland or solder joints are possible to ensure an intimate hold between the mold disc 15 and the nozzle-like elevation 16 within the core opening 1.
  • FIG. 6 illustrates a closure means designed as a grub screw 20, which is inserted into an internal thread 21 for closing a core opening 1, which is provided on the inner contour of the core opening 1.
  • the thread sizing of the grub screw 20 relative to the internal thread 21 to be made such that an intermediate gap 22 (see detail in Figure 6) between two thread contours, can flow into the solder or welding material as large as possible to secure against rotation to provide the grub screw 20.
  • the grub screw 20 for the filling of the soldering or welding material corresponding recesses 9, in which also a rotary tool can be brought into engagement, before.
  • FIGS. 7 a and b show a further measure for securing against an uncontrolled rotation of a closure means 3 introduced into a core opening 1.
  • the casting G is designed in the manner of a guide or moving blade L, which provides a core opening 1 at the front side.
  • a channel-shaped recess 22 is provided by the guide or blade L, which extends transversely to the axial extent of the core opening 1 and extends through the core opening 1.
  • a pin-shaped securing element 23 is provided which can be inserted along the channel opening 22.
  • FIG. 8 shows a further closure means 3 which, in contrast to the closure means explained above, is designed in the form of a band, preferably in the manner of a metal band or metal plate.
  • FIG. 8a shows the plan view of a blading L of a flow-rotation machine, in which a rectangular-shaped core opening 1 is introduced.
  • a metal strip 24 is used as closure means, which is threaded into the core opening 1 in the manner shown in FIG. 8b.
  • the core opening 1 has for this purpose a slot-shaped adapted to the width of the metal strip 4 recess 25, through which the metal strip 24 can be threaded axially.
  • a contact surface 26 is provided on the core opening 1, to which the metal strip 24 is added contour-faithfully.
  • the metal strip 24 has a metal strip length with which the band-shaped closure means 24 can be inserted accurately into the shape and recess of the core opening 1 shown in FIG. 8b.
  • the band-shaped closure means 24 frictionally closes the core opening 1 in a tight fit and in the region of the contact surface 26.
  • soldering or welding serves as an additional safeguard.
  • Closing means Foot part 'Collar' Area 1 Collar side edge Center part Head part Slot-shaped recess Chamfered surface part Groove-shaped recess 0 Axle 1 Rib-like elevation 2 Groove-shaped recess 3,14 Half 5 Shaped disc 6 Stem-like elevation 6 'Internal thread Washer Screw, screw means Wire-shaped mounting aid Grub screw Internal thread Channel-shaped recess Pin-like securing element
  • Belt-shaped closure means Slot-shaped recess Abutment area Deformation area

Abstract

L'invention concerne un objet moulé (G) coulé en creux, qui prévoit au moins une ouverture centrale (1) conditionnée par les techniques de fabrication, comprenant un moyen d'obturation (3) obturant l'ouverture centrale (1). L'invention est caractérisée en ce que le moyen d'obturation (3) peut être introduit dans l'ouverture centrale (1) de manière axiale par rapport à l'ouverture centrale (1) et prévoit au moins un secteur superficiel (4"), qui peut être mis en place en projection axiale par rapport à l'ouverture centrale (1) avec un secteur superficiel, tourné vers l'objet moulé (G), de l'objet moulé, et le secteur superficiel est situé radialement à l'extérieur d'une surface transversale spécifiée par l'ouverture centrale (1).
EP09720405A 2008-03-11 2009-03-04 Objet moulé coulé en creux Withdrawn EP2252418A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3652008 2008-03-11
PCT/EP2009/052524 WO2009112400A1 (fr) 2008-03-11 2009-03-04 Objet moulé coulé en creux

Publications (1)

Publication Number Publication Date
EP2252418A1 true EP2252418A1 (fr) 2010-11-24

Family

ID=39535342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09720405A Withdrawn EP2252418A1 (fr) 2008-03-11 2009-03-04 Objet moulé coulé en creux

Country Status (3)

Country Link
US (1) US8721284B2 (fr)
EP (1) EP2252418A1 (fr)
WO (1) WO2009112400A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9057271B2 (en) * 2011-11-04 2015-06-16 Siemens Energy, Inc. Splice insert repair for superalloy turbine blades
EP2826955A1 (fr) * 2013-07-15 2015-01-21 Siemens Aktiengesellschaft Aube de turbine moulée avec une ouverture fermée par un bouchon et procédé de fermeture d'une ouverture d'une aube de turbine moulée
EP2918775A1 (fr) * 2014-03-11 2015-09-16 Siemens Aktiengesellschaft Procédé d'obturation d'une ouverture d'une aube de turbine et bouchon approprié pour ce faire
US9995147B2 (en) * 2015-02-11 2018-06-12 United Technologies Corporation Blade tip cooling arrangement

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE448126A (fr) *
US1651503A (en) * 1921-09-26 1927-12-06 Belluzzo Giuseppe Blade of internal-combustion turbines
US2476339A (en) * 1942-02-20 1949-07-19 Opel Fritz Von Fastening device
US2543430A (en) * 1945-12-17 1951-02-27 Condenser Service & Engineerin Plug for sealing tube sheets
US2626773A (en) * 1950-09-11 1953-01-27 Rodger J Backman Shelf support
US2821323A (en) * 1955-12-07 1958-01-28 Lee Co Pin plug
US3331638A (en) * 1965-09-15 1967-07-18 Int Harvester Co Hub cap with fill plug
US4020970A (en) * 1975-12-24 1977-05-03 Illinois Tool Works Inc. Rotatable closure device
EP0119289A1 (fr) * 1983-03-21 1984-09-26 Hans Dr. Sallhofer Manchon de tuyau avec raccord d'accès à couvercle pour canalisations
US4486918A (en) * 1983-04-29 1984-12-11 Motorola, Inc. Snap action removable knob
JPH0315847Y2 (fr) * 1986-03-31 1991-04-05
DE3936171A1 (de) 1989-10-31 1991-05-02 Bayerische Motoren Werke Ag Auspuffkruemmer fuer brennkraftmaschinen, insbesondere fuer otto-motore mit abgasturbo-aufladung
JPH0735131Y2 (ja) * 1990-04-25 1995-08-09 池田物産株式会社 基材ヘのブラケットの固定構造
US5183385A (en) * 1990-11-19 1993-02-02 General Electric Company Turbine blade squealer tip having air cooling holes contiguous with tip interior wall surface
DE4434139C1 (de) 1994-09-24 1995-08-31 Ford Werke Ag Gußteilform mit Gießkernabstützung und Gußteil mit Kernöffnungsverschluß
DE19709607A1 (de) * 1997-03-08 1998-09-10 Abb Research Ltd Leitschaufel für Dampfturbinen
NL1007976C2 (nl) * 1998-01-07 1999-07-08 Metaalgieterij Giesen B V Werkwijze en afdichtstop voor het afdichten van een kerngat in een gietstuk.
JPH11229955A (ja) * 1998-02-13 1999-08-24 Daihatsu Motor Co Ltd 内燃機関におけるシリンダヘッドの構造
DE19905887C1 (de) 1999-02-11 2000-08-24 Abb Alstom Power Ch Ag Hohlgegossenes Bauteil
US6378931B1 (en) * 1999-10-29 2002-04-30 Exatec, Llc. Molded plastic automotive window panel and method of installation
US6454156B1 (en) * 2000-06-23 2002-09-24 Siemens Westinghouse Power Corporation Method for closing core printout holes in superalloy gas turbine blades
US6413041B1 (en) * 2000-08-02 2002-07-02 Siemens Westinghouse Power Corporation Method and apparatus for closing holes in superalloy gas turbine blades
US6837417B2 (en) * 2002-09-19 2005-01-04 Siemens Westinghouse Power Corporation Method of sealing a hollow cast member
DE10250779A1 (de) * 2002-10-30 2004-05-19 Alstom (Switzerland) Ltd. Notkühlsystem für ein hitzebelastetes Bauteil
DE102006053179A1 (de) * 2005-11-10 2007-05-16 Ks Kolbenschmidt Gmbh Einteiliger Stahlkolben als Feinguss-Variante mit Kern für die feingusstechnische Herstellung eines Kühlkanales

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009112400A1 *

Also Published As

Publication number Publication date
US8721284B2 (en) 2014-05-13
WO2009112400A1 (fr) 2009-09-17
US20110056648A1 (en) 2011-03-10

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