EP2925466B1 - Procédé de fabrication d'une masselotte comportant un corps de masselotte exothermique ainsi qu'une coque extérieure isolante - Google Patents

Procédé de fabrication d'une masselotte comportant un corps de masselotte exothermique ainsi qu'une coque extérieure isolante Download PDF

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Publication number
EP2925466B1
EP2925466B1 EP13798658.4A EP13798658A EP2925466B1 EP 2925466 B1 EP2925466 B1 EP 2925466B1 EP 13798658 A EP13798658 A EP 13798658A EP 2925466 B1 EP2925466 B1 EP 2925466B1
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EP
European Patent Office
Prior art keywords
feeder
foot
mold
feeder body
mold cavity
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.)
Active
Application number
EP13798658.4A
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German (de)
English (en)
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EP2925466A1 (fr
Inventor
Thomas Schäfer
Thomas Baginski
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.)
GTP Schaefer Giesstechnishe Produkte GmbH
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GTP Schaefer Giesstechnishe Produkte GmbH
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Application filed by GTP Schaefer Giesstechnishe Produkte GmbH filed Critical GTP Schaefer Giesstechnishe Produkte GmbH
Publication of EP2925466A1 publication Critical patent/EP2925466A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088—Feeder heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2023—Nozzles or shot sleeves

Definitions

  • the invention relates to a method for producing a feeder adapted for insertion into a mold used in the casting of metals, wherein the feeder comprises a feeder cavity and a arranged in its bottom portion passage opening for connection of the feeder cavity with the mold having feeder body and the feeder body of a exothermic material consists and is surrounded on its outer side at least partially by an outer shell consisting of an insulating refractory material, and wherein the feeder is provided with a arranged outside at its bottom portion and having an opening aligned with the opening Suiterfuß.
  • a Senaterfuß either in the form of a disc-shaped refractive core or in the form of a funnel-shaped metal disc is sufficient in which from EP 2 489 449 A known feeder the outer shell either zoomed only to the feeder or encloses this only on the outside.
  • the corresponding mold is not usable or usable.
  • the invention has for its object to provide a method for producing a feeder consisting of an exothermic material feeder body and this surrounding, consisting of insulating refractory material outer shell feeder including the feeder body associated Suiterfußes.
  • the basic idea of the invention is that the feeder body produced from the exothermic material in a first step is used together with the feeder foot assigned to its base area to form the outer shell in a mold cavity having a mold cavity and feeder body and feeder foot simultaneously with the mold body insulating material are shot, wherein the feeder body including the Feiserfußes in the mold cavity of the shooting mold is positioned so that the injected into the mold cavity of the shooting mold insulating material left between the Feiserfuß and the bottom of the mold cavity at least on a part of the circumference of the Feiserfußes and fills over at least a portion of the height of the feeder foot extending gap and the shot outer shell thereby engages the Suiterfuß under the exclusion of the opening at least partially and without the use of H. Aids on the bottom portion of the feeder body holds.
  • the special advantage associated with the invention is that it is possible to dispense with a separate attachment or attachment of the feeder foot to the feeder body, which causes a separate manufacturing step, because the attachment of the feeder foot to the feeder body by the two parts together comprehensive outer shell takes place. It is sufficient on the one hand, if the outer shell engages under the Feiserfuß at least a portion of the circumference, and on the other hand, if the outer shell extends depending on the shape or the training of Suiterfußes only over part of its height, as long as the fixation of the Feeder foot is maintained on the feeder body through the outer shell.
  • a significant further advantage of the invention results from the fact that the invention additionally formed between the Feiserfuß and the mold cavity of the mold or the molded therein casting insulating significantly contributes to the performance of the feeder, because an energy or heat flow from the feeder system in the direction of Mold cavity is prevented.
  • heat removal in this respect which is not insignificant in particular in the presence of a metal feeder foot, is significantly reduced.
  • by setting the Feiserfußes on the feeder body by the Feiserfuß under cross-insulating layer a step in the production of the feeder and material in the form of the otherwise provided adhesive saved. Due to the absence of the adhesive, as far as provided for attachment of the feeder foot to the feeder body, there is the further advantage that the formation of gases by burning of the adhesive is thereby prevented even during the casting process.
  • the feeder body and the Feiserfuß be positioned in the mold cavity of the shooting mold such that there is a over the entire circumference of the Feiserfußes extending gap for receiving the insulating material.
  • the Feiserfuß and subsequently the feeder body are placed on a rising on the bottom of the mold cavity of the shooting mandrel and positioned in a height of the gap predetermining distance to the bottom of the mold cavity.
  • Feederfuß is understood to mean all structural or shaped parts which connect the feeder body or the feeder cavity formed therein to the casting mold or to the mold cavity to be filled with the liquid metal during the casting process, regardless of whether it is In this case, components mounted fixedly on the feeder body or components moving under the mold pressure acting on the mold when the feeder is formed in the casting mold are components which move relative to the feeder body.
  • the Feiserfuß consists of a funnel-shaped, in the region of the smallest diameter, the opening having metal disc, said shape of the Feiserfußes from the EP 2 489 449 A is basically known.
  • the funnel-shaped metal disc is inserted with a part of its height extension in a suitably shaped depression in the bottom of the shooting mold, so that the injected into the mold cavity of the shooting mold insulating material penetrates into the predetermined gap and the metal disc on which encloses the projecting part of their height; due to the widening of the feeder body shape of the metal disk, this is under attacked by the outer shell and thereby fixed to the bottom portion of the feeder body.
  • the Feiserfuß consists of an opening having disc-shaped breaker core
  • the invention provides that feeder body and the Feiserfuß be positioned in the mold cavity of the shooting mold such that the gap for receiving the insulating material is greater than the entire height of the Feederfuß forming Brechkerns. Owing to the greater height of the gap, the outer shell formed by the injection of the insulating material forms a shoulder extending below the disc-shaped breaker core and thus defining the breaker core at the bottom region of the feeder body.
  • Examples of movable relative to the feeder body arranged embodiments of the feeder foot arise, for example, from the EP 1 850 987 B1 or the EP 1 184 104 A1 , These embodiments relate to a tubular body insertable into the feeder cavity of the feeder body or to a feeder base consisting of exothermic material and insertable into the feeder cavity of the feeder body.
  • the patch on the mandrel Suiterfuß means of the mandrel cross-opening and subsequently attached to the mandrel feeder body centered on the feeder foot by means of a centering design formed on the inside thereof, wherein according to an embodiment of the invention, the centering arrangement formed on the feeder body can be formed by a centering ring which is arranged in the bottom region of the feeder body and which surrounds the feeder foot on at least part of its outer circumference.
  • the feeder base is centered on the mandrel by means of its mandrel overlapping the mandrel and the feeder body with its bottom portion formed on the feeder foot by means of a gutter foot formed at least over part of the outer periphery of the feeder foot and the feeder body centered on the outside bordering collar.
  • the respective feeder base and feeder body mounted on the mandrel are fixed by a holding-down device reaching into the mold cavity of the mold so that a defined shape of the outer shell is ensured. So far as a recess in the lid area is formed by the hold-down in the insulating shell, this recess facilitates puncturing or piercing the finished feeder following the molding on the upper box section of the molds.
  • corresponding openings have to be provided in the lid region for the molded feeders, which serve for venting the casting mold during the casting process.
  • the production takes place in smaller and medium-sized mold box sizes of the molds preferably by means of commercially available drills, while in larger mold box dimensions automatic handling or robotic systems are used.
  • the introduction of the openings in the lid of the feeder body is facilitated by the recess formed in the insulating by the use of the blank holder, because on the one hand the total thickness of the lid portion of the feeder is limited to the wall thickness of the feeder body and on the other hand by the in the insulating shell formed recess is given a guide of the corresponding drilling tool.
  • the shot air displaced from the mold cavity during injection of the insulating material and, on the other hand, any gas introduced into the mold cavity for gassing the finished shot feeder are discharged in a dimensioned manner via vent nozzles arranged in the bottom of the mold.
  • FIG. 1 In the left half of the FIG. 1 is a multi-part mold 10 for circumscribing an inserted into the mold cavity 30 of the mold 10 feeder body 14 is shown with an insulating material.
  • This shooting mold 10 consists of a base plate 11, a seated thereon sub-box 12 and a top box 13. Above the top box 13, a shooting head plate, not shown, is arranged, which forms the upper end of the mold cavity 30, and injected through the insulating material in the mold cavity 30 becomes.
  • the out FIG. 1 apparent finished shot feeders consists of a feeder body 14 made of exothermic material, which forms in its interior a feeder cavity 15 enclosed by a side wall 16 and a lid region 17.
  • a passage opening 19 for connecting the feeder cavity 15 with the casting mold is formed during the intended use of the feeder.
  • a metallic Feiserfuß 20 is additionally arranged with a correspondingly arranged opening 21, wherein the Feiserfuß 20 consists of a funnel-shaped, in the region of the smallest diameter said opening 21 having metal disc.
  • the Feederfuß 20 and the feeder body 14 are inserted into the mold cavity 30 of the shooting mold 10, wherein both parts are placed on a resting on the base plate 11 of the shooting mold 10 mandrel 22 for fixing Whyrfuß 20 and feeder body 14 during the shooting process ,
  • the surface of the base plate 11 is formed with a recess 23 for partially receiving the funnel-shaped Suiterfußes 20, so that the Feederfuß 20 projects beyond the base plate 11 only with a portion of its height.
  • a centering of the Feiserfußes 20 takes place on the one hand through the opening 21 21 through spike 22 and also by adapting the shape of the recess 23 to the shape of the Feiserfußes 20th
  • a centering ring 24 is inserted, which engages over the at least part of its circumference projecting shoulder 24a the Feederfuß 20 on the outer circumference, so that the feeder body 14 is centered on the feeder foot 20.
  • An additional centering Support of the feeder body 14 on the mandrel 22 results from the fact that the mandrel 22 at its upper end has a conical contour, and also the associated upper portion of the feeder cavity 15 of the feeder body 14 is formed such that at the lid portion 17 of the feeder body 14 a additional centering support results.
  • the feeder body 14 On the upper side of its lid portion 17, the feeder body 14 has a recess 31 for abutment of a not shown, also not shown shooting head plate holding-down, wherein formed in the illustrated embodiment, the procedural engagement of the hold-down by a by removing the shooting head plate with hold-down Channel 32 is indicated.
  • About the hold-down feeder body 14 and Feiserfuß 20 are fixed in the mold cavity 30 of the shooting mold 10 during the shooting process.
  • vent nozzles 33 are formed with venting channels 34 leading away therefrom, via which a dimensioned removal of the displaced shot air takes place during the Umsch manungsvorgang.
  • the vent nozzles 33 also contribute to a corresponding steering and dimensioning of the introduced gas flow.
  • FIG. 2 illustrated embodiment differs from the embodiment described above only in that is dispensed with the arrangement of the centering ring on the feeder body 14. Rather, the Feederfuß 20 at its upper edge on a collar 35 upstanding thereof, which is adapted to the outer shape of the bottom portion 18 of the feeder body 14 such that the feeder body 14 is inserted into the cup-shaped receiving structure of the Feederfußes 20 and thereby against the Feederfuß 20th is centered.
  • This collar 35 may be formed running around the entire lower portion of the feeder body 14; but it is also sufficient if the collar 35 is formed only in segments.
  • the Feederfuß 20 is also formed as a per se known disc-shaped breaker core in the form of a metal disc. In this case, care must be taken when inserting the feeder foot and the feeder body that the disc-shaped breaker core is held in place with a gap 25 again forming a distance to the surface of the base plate 11 of the shooting mold 10.
  • This is realized by a formed on the mandrel 22 paragraph 40, the has a larger diameter than the opening formed in the disk-shaped breaker core.

Claims (14)

  1. Procédé de fabrication d'un alimentateur conçu pour être inséré dans un moule d'injection utilisé pour le coulage de métaux, l'alimentateur présentant un corps d'alimentateur (14) entourant une cavité d'alimentateur (15) et présentant un orifice traversant (19) disposé au niveau de son fond (18) pour connecter la cavité d'alimentateur (15) au moule d'injection (14) et le corps d'alimentateur (14) étant composé d'un matériau exothermique et étant entouré sur sa face extérieure du moins par endroits d'une coque extérieure composée d'un matériau isolant ignifugé (27) et l'alimentateur étant pourvu d'un pied d'alimentateur (20) disposé à l'extérieur au niveau de son fonds (18) et présentant un orifice (21) aligné avec l'orifice traversant (19), caractérisé en ce que le corps d'alimentateur (14) fabriqué dans une première étape à partir du matériau exothermique est inséré en commun avec le pied d'alimentateur (20) associé à sa partie fond (18) pour constituer la coque extérieure (27) dans un moule d'injection (10) présentant une cavité de moule (30) et que le corps d'alimentateur et le pied d'alimentateur sont en même temps entourés d'une injection de matériau isolant, le corps d'alimentateur (14), y compris le pied d'alimentateur (20), étant positionné dans la cavité de moule (30) du moule d'injection (10) de manière à ce que le matériau isolant injecté dans la cavité de moule (30) du moule d'injection (10) remplisse au moins un intervalle (25) laissé sur au moins une partie de la circonférence du pied d'alimentateur (20) et s'étendant sur au moins une partie de la hauteur du pied d'alimentateur (20) et que la coque extérieure fermée (27) maintienne ainsi le pied d'alimentateur (20) sans utiliser de moyens auxiliaires au niveau du fond (18) du corps d'alimentateur (14).
  2. Procédé selon la revendication 1, caractérisé en ce que le corps d'alimentateur (14) et le pied d'alimentateur (20) sont disposés dans la cavité de moule (30) du moule d'injection (10) de manière à obtenir un intervalle (25) s'étendant sur toute la circonférence du pied d'alimentateur (20) et destiné à recevoir le matériau isolant.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le pied d'alimentateur (20) et ensuite le corps d'alimentateur (14) sont posés sur un mandrin (22) dressé sur le fond de la cavité de moule (30) du moule d'injection (10) et positionnés à une distance définissant la hauteur de l'intervalle (25) par rapport au fond de la cavité de moule (30).
  4. Procédé selon une des revendications 1 à 3, caractérisé en ce que le pied d'alimentateur (20) est composé d'un disque métallique façonné en forme d'entonnoir et présentant l'orifice (21) au niveau de son plus faible diamètre.
  5. Procédé selon la revendication 4, caractérisé en ce que le disque métallique en forme d'entonnoir est inséré par une partie de son extension en hauteur dans un creux (23) de forme adaptée pratiqué dans le fond du moule d'injection (10).
  6. Procédé selon une des revendications 1 bis 3, caractérisé en ce que le pied d'alimentateur (20) est composé d'un noyau de liaison en forme de disque présentant l'orifice (21).
  7. Procédé selon la revendication 6, caractérisé en ce que le corps d'alimentateur (14) et le pied d'alimentateur (20) sont positionnés dans la cavité de moule (30) du moule d'injection (10) de manière à ce que l'intervalle (25) destiné à recevoir le matériau isolant soit supérieur à la hauteur totale du noyau de liaison constituant le pied d'alimentateur (20).
  8. Procédé selon une des revendications 1 à 3, caractérisé en ce que le pied d'alimentateur est composé d'un corps de forme tubulaire constituant l'orifice (21) et insérable dans la cavité d'alimentateur (15) du corps d'alimentateur (14).
  9. Procédé selon une des revendications 1 à 3, caractérisé en ce que le pied d'alimentateur (20) est composé d'une partie inférieure d'alimentateur composée de matériau exothermique et insérable dans la cavité d'alimentateur (15) du corps d'alimentateur (14) .
  10. Procédé selon une des revendications 1 à 9, caractérisé en ce que le pied d'alimentateur (20) posé sur le mandrin (22) est centré au moyen de son orifice (21) surmontant le mandrin (22) et le corps d'alimentateur (14) posé ensuite sur le mandrin (22) au moyen d'une structure de centrage constituée au niveau de son intérieur sur le pied d'alimentateur (20) .
  11. Procédé selon la revendication 10, caractérisé en ce que la structure de centrage constituée au niveau du corps d'alimentateur (14) est constituée par un anneau de centrage (24) disposé au niveau du fond (18) du corps d'alimentateur (14) et entourant du moins partiellement le pied d'alimentateur (20) sur sa circonférence extérieure.
  12. Procédé selon une des revendications 1 à 9, caractérisé en ce que le pied d'alimentateur (20) est centré au moyen de son orifice (21) surmontant le mandrin sur le mandrin (22) et le corps d'alimentateur (14) par sa partie fond (IS) sur le pied d'alimentateur (20) au moyen d'une collerette (35) constituée au bord supérieur du pied d'alimentateur (20), s'étendant du moins sur une partie de la circonférence extérieure du pied d'alimentateur (20) et enserrant le corps d'alimentateur (14) sur sa circonférence extérieure (35).
  13. Procédé selon une des revendications 1 à 12, caractérisé en ce que le pied d'alimentateur (20) posé respectivement sur le mandrin (22) et le corps d'alimentateur (14), pendant l'injection du matériau isolant, sont maintenus par un serre-flan rentrant dans la cavité de moule (30) du moule d'injection (10) .
  14. Procédé selon une des revendications 1 à 13, caractérisé en ce que d'une part l'air d'injection refoulé de la cavité de moule (30) lors de l'injection du matériau isolant (30) et d'autre part un gaz introduit éventuellement pour apporter du gaz à l'alimentateur dont l'injection est terminée dans la cavité de moule (30) sont évacués de manière dimensionnée par des buses de purge (33) disposées dans le fond du moule d'injection (10).
EP13798658.4A 2012-11-29 2013-11-29 Procédé de fabrication d'une masselotte comportant un corps de masselotte exothermique ainsi qu'une coque extérieure isolante Active EP2925466B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012111583 2012-11-29
PCT/EP2013/075084 WO2014083155A1 (fr) 2012-11-29 2013-11-29 Procédé de fabrication d'une masselotte comportant un corps de masselotte exothermique ainsi qu'une coque extérieure isolante

Publications (2)

Publication Number Publication Date
EP2925466A1 EP2925466A1 (fr) 2015-10-07
EP2925466B1 true EP2925466B1 (fr) 2018-03-14

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EP13798658.4A Active EP2925466B1 (fr) 2012-11-29 2013-11-29 Procédé de fabrication d'une masselotte comportant un corps de masselotte exothermique ainsi qu'une coque extérieure isolante

Country Status (4)

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US (1) US9573188B2 (fr)
EP (1) EP2925466B1 (fr)
TR (1) TR201807296T4 (fr)
WO (1) WO2014083155A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2818262A1 (fr) * 2013-06-27 2014-12-31 GTP-Schäfer Giesstechnische Produkte GmbH Insert d'alimenteur avec pied d'alimenteur isolé
GB201415516D0 (en) * 2014-09-02 2014-10-15 Foseco Int Feeder system
DE102015103593B3 (de) * 2015-03-11 2016-05-12 GTP Schäfer Gießtechnische Produkte GmbH Verfahren zur Herstellung eines sowohl exotherme als auch isolierende Bereiche aufweisenden Speisereinsatzes
KR102216966B1 (ko) 2015-09-02 2021-02-19 포세코 인터내셔널 리미티드 피더 시스템
EP3334547A1 (fr) 2015-09-02 2018-06-20 Foseco International Limited Système de masselotte
DE102015115437A1 (de) 2015-09-14 2017-03-16 GTP Schäfer Gießtechnische Produkte GmbH Verfahren zur Herstellung eines Speisers in einer Kernschießmaschine und zur Durchführung des Verfahrens geeigneter Kernkasten
CN105382241A (zh) * 2015-12-30 2016-03-09 上海爱仕达汽车零部件有限公司 一种分油器箱体的浇铸工艺
ES2769203T3 (es) * 2016-03-18 2020-06-25 Gtp Schaefer Giesstechnische Produkte Gmbh Procedimiento para la fabricación de un alimentador con un tejido a modo de red que recubre la abertura de alimentador del mismo

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Publication number Priority date Publication date Assignee Title
FR2648373B1 (fr) 1989-06-14 1994-04-01 Daussan Cie Pot de fonderie
WO2000027560A1 (fr) 1998-11-10 2000-05-18 Ashland Inc. Manchons multicouche et leurs utilisations
DE10039519B4 (de) 2000-08-08 2007-05-31 Chemex Gmbh Speisereinsatz
DE102005008324A1 (de) 2005-02-23 2006-08-24 AS Lüngen GmbH & Co. KG Speiser mit beweglicher Tülle
DE102007012117A1 (de) 2007-03-13 2008-09-18 AS Lüngen GmbH Luftspalt-Speiser
EP2489449B1 (fr) 2011-02-18 2015-12-02 GTP-Schäfer Giesstechnische Produkte GmbH Masselotte dotée d'un corps d'alimentation exothermique et d'une enveloppe d'isolation extérieure

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Publication number Publication date
WO2014083155A1 (fr) 2014-06-05
TR201807296T4 (tr) 2018-06-21
US20150283602A1 (en) 2015-10-08
US9573188B2 (en) 2017-02-21
EP2925466A1 (fr) 2015-10-07

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