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EP0174613A1 - Mould for the production of plate grids for lead accumulators - Google Patents

Mould for the production of plate grids for lead accumulators Download PDF

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Publication number
EP0174613A1
EP0174613A1 EP85111263A EP85111263A EP0174613A1 EP 0174613 A1 EP0174613 A1 EP 0174613A1 EP 85111263 A EP85111263 A EP 85111263A EP 85111263 A EP85111263 A EP 85111263A EP 0174613 A1 EP0174613 A1 EP 0174613A1
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EP
European Patent Office
Prior art keywords
mold
thermal conductivity
grid
frames
casting mold
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
EP85111263A
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German (de)
French (fr)
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EP0174613B1 (en
Inventor
Hans-Joachim Dr. Dipl.-Ing. Golz
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VARTA Batterie AG
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VARTA Batterie AG
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Priority to AT85111263T priority Critical patent/ATE33461T1/en
Publication of EP0174613A1 publication Critical patent/EP0174613A1/en
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Publication of EP0174613B1 publication Critical patent/EP0174613B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • B22D25/04—Casting metal electric battery plates or the like

Definitions

  • the invention relates to a casting mold from two mold halves for the production of grid plates for lead accumulators, in particular starter grids, which in addition to thin grid ribs and webs have thicker frames and plate flags.
  • Lattice molds for starter battery grids are generally made from cast iron. They are held in a hinged mold carrier or mold clamping block, and each mold half can be replaced in it.
  • the mold carriers are provided with a number of cooling channels, if possible in a distribution in which highly overheated surfaces are also exposed to particularly effective cooling.
  • the mold coating consists of all three components. Its primary purpose is insulation by preventing the lead from adhering to the mold and thus acting as a highly effective release agent. It also enables the air in the mold cavity to escape at least over short distances and through pore spaces that are not filled by the lead to the nearest ventilation openings.
  • the coating forms a thermal cushion towards the relatively good heat-conducting mold material and ensures that the poured-in liquid lead does not solidify prematurely, but rather can fill the mold cavity exactly.
  • the necessary constant renewal of the powder layer which is carried out by means of a compressed air atomizer, means that after a whole series of applications, precisely at the places of the shape which form the flags and frames, the heat removal from the molten lead takes place disproportionately much more slowly than from the filigree of the bars with his low accumulation of material, so that it was started to scrape off the remaining layer at the points mentioned before each new dusting of the mold, so as to make the contact with the good heat-conducting mold material closer.
  • each of the two integral mold halves has a central part with the grid ribs and webs corresponding depressions and an edge part with a plate edge corresponding has a larger groove, although the edge parts are in direct heat-conducting connection with the associated mold carrier halves, but the middle parts are offset against the mold carrier by an air gap.
  • the heat flow out of the thin lattice is delayed by the insulating air pockets formed in this way.
  • the invention has for its object to provide a mold for grid plates, which makes it possible to adjust the different cooling speeds of the frame and the latticework so that a faster workflow is possible after avoiding annoying post-treatment after each casting process or other measures associated with wasted time.
  • An essential concept of the invention is therefore the accelerated suction of the disproportionately high heat content of the lead melt in the mold cavities corresponding to the flags and plate frames, which is not possible by enlarging the mold cavity area with the help of a better one thermally conductive and in this property still actively supported by a coolant mold material.
  • the base material of the casting mold which usually consists of gray cast iron or certain steel alloys, is replaced according to the invention at the material accumulation points of the casting by a material with a higher specific thermal conductivity.
  • a suitable material for the purpose according to the invention is, for example, copper, whose coefficient of thermal conductivity is 384W / mK compared to 58 W / m ⁇ K for gray cast iron.
  • a particularly advantageous embodiment of a lattice casting mold according to the invention is when the thermal conductivity of the better heat-conducting material is approximately in the same ratio to the thermal conductivity of the basic mold material as the specific material accumulation at the plate thickenings to the material distribution over the actual lattice surface.
  • the purpose according to the invention can also be achieved by a targeted cross-sectional design of the molded parts made of the better heat-conducting material, by designing the cross-section in accordance with its specific thermal conductivity so that the achievable heat outflow is based on the ratio of the material accumulation on the plate thickenings to the material distribution the actual grid area is increased.
  • the effectiveness of the thermal bridges only comes into play when they are connected at the rear to a channel through which a cooling medium flows, because the temperature factor contained in the dimension of the thermal conductivity inevitably has greater influence, the greater the temperature difference is.
  • Water or oil are generally used as the cooling medium.
  • the inserts will be conveniently inserted in the required places before the mold is engraved. There may be rotationally symmetrical parts in the area of the flags, since these are the easiest to manufacture and fit. In the area of the frames, there will have to be strips that may have stems that are not too far apart, which in turn lead to the cooling channels.
  • the dimensioning of the thermal bridges has to be carried out individually from grid to grid in order to achieve the goal of simultaneous cooling with different grid constructions.
  • the figure shows a lattice casting mold 1, in which the base material of the mold is replaced by an insert 2 of higher thermal conductivity with the contours of the flag 3 and the frame 4 in areas of larger accumulations of molten lead.
  • the arrows indicate the direction of the molten lead.
  • the cooling water channels 5 are arranged at a greater depth of the mold, but as closely as possible adjacent to the insert.
  • vents 6 are embedded in the mold surface, at the same time integrated in their engraving. These are inserts similar to the thermal bridges according to the invention, but consist of the same basic material as the shape and allow the air compressed in front of the inflowing lead in the web grooves to escape via the capillary joints 7 into the ventilation channel 8.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Vibration Dampers (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The accumulations of molten lead which correspond to the lugs and frames of molded starter battery plates can be caused to solidify at the same rate as the much thinner grids of the plates by providing a mold having inserts made from a material whose thermal conductivity is higher than that of the base material of the mold in the regions of the mold which are used to form the lugs and frames, provided these inserts are disposed as close as possible to a system of cooling channels. The ratio of the thermal conductivity of the material from which the inserts are made to the thermal conductivity of the base material of the mold should approximate the ratio of the material accumulations on the lugs and frames to that on the rest of the grid.

Description

Die Erfindung betrifft eine Gießform aus zwei Formhälften zur Herstellung von Gitterplatten für Bleiakkumulatoren, insbesondere Startergittern, die neben dünnen Gitterrippen und -stegen dickere Rahmen und Plattenfahnen aufweisen.The invention relates to a casting mold from two mold halves for the production of grid plates for lead accumulators, in particular starter grids, which in addition to thin grid ribs and webs have thicker frames and plate flags.

Gittergießformen für Starterbatteriegitter werden im allgemeinen aus Gußeisen hergestellt. Sie sind in einem aufklappbaren Formträger oder Formspannblock gehaltert und darin, jede Formhälfte für sich, auswechselbar. Zur raschen Abkühlung des drucklos in die Form eingegossenen Bleis sind die Formträger mit einer Anzahl von Kühlkanälen versehen, und zwar möglichst in einer Verteilung, bei der stark überhitzte Flächen auch einer besonders effektiven Kühlung ausgesetzt sind.Lattice molds for starter battery grids are generally made from cast iron. They are held in a hinged mold carrier or mold clamping block, and each mold half can be replaced in it. For rapid cooling of the lead cast without pressure into the mold, the mold carriers are provided with a number of cooling channels, if possible in a distribution in which highly overheated surfaces are also exposed to particularly effective cooling.

Für ein gutes Gelingen der Gießlinge ist die Vorbehandlung der Gießform durch Beschichten mit Talkum, Graphit oder Korkmehl unerläßlich. In aller Regel besteht die Formenbeschichtung aus allen drei Komponenten. Ihr Zweck ist in erster Linie eine Isolierung, indem sie die Adhäsion des Bleis in der Form verhindert und so als hochwirksames Trennmittel fungiert. Sie ermöglicht weiterhin ein Entweichen der in der Formenkavität befindlichen Luft zumindest über kurze Strecken hinweg und durch Porenräume, die vom Blei nicht ausgefüllt werden, zu den nächstgelegenen Entlüftungsöffnungen.The pretreatment of the casting mold by coating with talc, graphite or cork flour is essential for the casting to succeed. As a rule, the mold coating consists of all three components. Its primary purpose is insulation by preventing the lead from adhering to the mold and thus acting as a highly effective release agent. It also enables the air in the mold cavity to escape at least over short distances and through pore spaces that are not filled by the lead to the nearest ventilation openings.

Nicht weniger wichtig ist aber auch, daß die Beschichtung zum relativ gut wärmeleitenden Formenwerkstoff hin ein Wärmepolster bildet und dafür sorgt, daß das eingegossene flüssige Blei nicht vorzeitig erstarrt, sondern die Formenkavität exakt ausfüllen kann.It is also no less important that the coating forms a thermal cushion towards the relatively good heat-conducting mold material and ensures that the poured-in liquid lead does not solidify prematurely, but rather can fill the mold cavity exactly.

Die notwendige ständige Erneuerung der Puderschicht, die mittels eines Preßluftzerstäubers erfolgt, bringt es nun mit sich, daß nach einer ganzen Serie von Auftragungen gerade an den Stellen der Form, welche die Fahnen und Rahmen bilden, die Wärmeabfuhr aus dem schmelzflüssigen Blei unverhältnismäßig viel langsamer erfolgt als aus dem Filigran der Gitterstege mit seiner geringen Materialanhäufung, so daß man dazu übergegangen war, an den besagten Stellen vor jeder neuen Überstäubung der Form die noch vorhandene Schicht abzukratzen, um so den Kontakt zum gut wärmeleitenden Formenmaterial enger zu gestalten.The necessary constant renewal of the powder layer, which is carried out by means of a compressed air atomizer, means that after a whole series of applications, precisely at the places of the shape which form the flags and frames, the heat removal from the molten lead takes place disproportionately much more slowly than from the filigree of the bars with his low accumulation of material, so that it was started to scrape off the remaining layer at the points mentioned before each new dusting of the mold, so as to make the contact with the good heat-conducting mold material closer.

Bei diesen Auskratzungen haben sich jedoch Mängel ergeben, daß unvermeidbar an den Rändern der ausgekratzten Stelle Ausfransungen der Beschichtung auftreten, die später im Betrieb der so behandelten Form der Ursprung für das Abplatzen mehr oder weniger großer Stücke der Beschichtung sind.With these scrapings, however, there have been defects that inevitably fraying of the coating occurs at the edges of the scraped-out area, which later in operation in the form treated in this way are the origin for the chipping of more or less large pieces of the coating.

Bei einer aus der DE-PS 1 155 833 bekannten Gießform wird die erstrebte gleichschnelle Abkühlung der kräftigen und der dünnen Plattengitterteile dadurch erreicht, daß jede der beiden einstückigen Formhälften ein Mittelteil mit den Gitterrippen und -stegen entsprechenden Vertiefungen sowie ein Randteil mit einer dem Plattenrand entsprechenden größeren Auskehlung besitzt, wobei zwar die Randteile mit den zugehörigen Formträgerhälften in direkter wärmeleitender Verbindung stehen, die Mittelteile jedoch durch einen Luftspalt gegen die Formträger abgesetzt sind. Durch die so gebildeten isolierenden Lufttaschen wird der Wärmeabfluß aus dem dünnen Gitterwerk verzögert.In a casting mold known from DE-PS 1 155 833, the desired rapid cooling of the strong and the thin plate grid parts is achieved in that each of the two integral mold halves has a central part with the grid ribs and webs corresponding depressions and an edge part with a plate edge corresponding has a larger groove, although the edge parts are in direct heat-conducting connection with the associated mold carrier halves, but the middle parts are offset against the mold carrier by an air gap. The heat flow out of the thin lattice is delayed by the insulating air pockets formed in this way.

Der Erfindung liegt die Aufgabe zugrunde, eine Gießform für Gitterplatten anzugeben, die es gestattet, unter Vermeidung lästiger Nachbehandlungen nach jedem Gießvorgang oder anderer mit Zeitverlusten einhergehenden Maßnahmen die unterschiedlichen Abkühlungsgeschwindigkeiten des Rahmens und des Gitterwerkes so einander anzugleichen, daß ein schnellerer Arbeitsfluß möglich ist.The invention has for its object to provide a mold for grid plates, which makes it possible to adjust the different cooling speeds of the frame and the latticework so that a faster workflow is possible after avoiding annoying post-treatment after each casting process or other measures associated with wasted time.

Die Aufgabe wird erfindungsgemäß mit den im kennzeichnenden Teil des Anspruchs 1 angegebenen Mitteln gelöst.The object is achieved with the means specified in the characterizing part of claim 1.

Wesentlicher Erfindungsgedanke ist somit die beschleunigte Absaugung des unverhältnismäßig großen Wärmeinhalts der Bleischmelze in den mit den Fahnen und Plattenrahmen korrespondierenden Formkavitäten, die nicht durch eine Vergrößerung der Formenhohlfläche möglich ist, mit Hilfe eines besser wärmeleitenden und in dieser Eigenschaft noch durch ein Kühlmittel aktiv unterstützten Formenmaterials. Dementsprechend wird das - meist aus Grauguß oder bestimmten Stahllegierungen bestehende - Grundmaterial der Gießform an den besagten Materialanhäufungsstellen des Gießlings erfindungsgemäß durch einen Werkstoff mit höherer spezifischer Wärmeleitfähigkeit ersetzt. Als ein für den erfindungsgemäßen Zweck geeigneter Werkstoff bietet sich z.B. Kupfer an, dessen Wärmeleitzahl 384W/m.K beträgt gegenüber 58 W/m·K für Grauguß. Es ergibt sich daraus eine um den Faktor 6,6 zu verbessernde Wärmeabführung. Etwas ungünstiger verhält sich Aluminium mit einer Wärmeleitzahl von 204 W/m-K, die sich für Aluminiumlegierungen noch weiter bis auf etwa 172 W/m-K vermindert, für Aluminiumbronze (mit 10 % Al-Anteil) sogar nur 33 W/m·K beträgt.An essential concept of the invention is therefore the accelerated suction of the disproportionately high heat content of the lead melt in the mold cavities corresponding to the flags and plate frames, which is not possible by enlarging the mold cavity area with the help of a better one thermally conductive and in this property still actively supported by a coolant mold material. Accordingly, the base material of the casting mold, which usually consists of gray cast iron or certain steel alloys, is replaced according to the invention at the material accumulation points of the casting by a material with a higher specific thermal conductivity. A suitable material for the purpose according to the invention is, for example, copper, whose coefficient of thermal conductivity is 384W / mK compared to 58 W / m · K for gray cast iron. This results in a heat dissipation to be improved by a factor of 6.6. Aluminum behaves somewhat less favorably with a thermal conductivity of 204 W / mK, which decreases even further for aluminum alloys down to about 172 W / mK, for aluminum bronze (with 10% Al content) it is even only 33 W / m · K.

Mit diesen Zahlen der Materialeigenschaft Wärmeleitfähigkeit läßt sich im Zusammenwirken mit der konstruktiven Ausbildung der einzusetzenden "Wärmeleitbrücken" genau die Wärmeableitung erreichen, die für einen optimalen Gießvorgang erforderlich ist. Bei einem solchen Gießvorgang kommt es nämlich im Hinblick auf eine möglichst kurze Taktzeit in erster Linie darauf an, daß alle Teile des Gitters möglichst gleichmäßig die Temperatur unterschreiten, die insbesondere zur Verhinderung von Wärmerissen und ähnlichen Fehlern mindestens eingehalten werden muß, bevor die Entformung beginnen kann.With these figures of the material property thermal conductivity, in conjunction with the constructive design of the "thermal bridges" to be used, exactly the heat dissipation that is required for an optimal casting process can be achieved. With such a casting process, the most important thing with regard to a cycle time that is as short as possible is that all parts of the grid fall below the temperature as evenly as possible, which must at least be maintained, in particular to prevent heat cracks and similar defects, before the demolding can begin .

Eine besonders vorteilhafte Ausführung einer Gittergießform gemäß der Erfindung liegt vor, wenn die Wärmeleitfähigkeit des besser wärmeleitenden Werkstoffes zu der Wärmeleitfähigkeit des Formengrundmaterials etwa im gleichen Verhältnis steht wie die spezifische Materialanhäufung an den Plattenverdickungen zu der Materialverteilung über die eigentliche Gitterfläche.A particularly advantageous embodiment of a lattice casting mold according to the invention is when the thermal conductivity of the better heat-conducting material is approximately in the same ratio to the thermal conductivity of the basic mold material as the specific material accumulation at the plate thickenings to the material distribution over the actual lattice surface.

Alternativ hierzu läßt sich der erfindungsgemäße Zweck auch durch eine gezielte Querschnittsgestaltung der Formenteile aus dem besser wärmeleitenden Werkstoff erfüllen, indem man nach Maßgabe von dessen spezifischer Wärmeleitfähigkeit den Querschnitt so auslegt, daß der erzielbare Wärmeabfluß um das Verhältnis der Materialanhäufung an den Plattenverdickungen zu der Materialverteilung über die eigentliche Gitterfläche erhöht ist.As an alternative to this, the purpose according to the invention can also be achieved by a targeted cross-sectional design of the molded parts made of the better heat-conducting material, by designing the cross-section in accordance with its specific thermal conductivity so that the achievable heat outflow is based on the ratio of the material accumulation on the plate thickenings to the material distribution the actual grid area is increased.

In jedem Fall kommt die Wirksamkeit der Wärmeleitbrücken erst dann voll zur Geltung, wenn sie an ihrer Rückseite mit einem von einem Kühlmedium durchflossenen Kanal verbunden sind, denn der in der Dimension des Wärmeleitwertes enthaltene Temperaturfaktor gelangt zwangsläufig zu um so größerem Einfluß, je größer der Temperaturunterschied ist. Als Kühlmedium dienen im allgemeinen Wasser oder Öl.In any case, the effectiveness of the thermal bridges only comes into play when they are connected at the rear to a channel through which a cooling medium flows, because the temperature factor contained in the dimension of the thermal conductivity inevitably has greater influence, the greater the temperature difference is. Water or oil are generally used as the cooling medium.

Die Einlegeteile wird man praktischerweise vor der Gravur der Form an den erforderlichen Stellen einsetzen. Es werden im Bereich der Fahnen rotationssymmetrische Teile sein können, da diese sich am leichtetsten herstellen und einpassen lassen. Im Bereich der Rahmen werden es Leisten sein müssen, die ggf. in einem nicht allzu großen Abstand voneinander Stiele haben, die ihrerseits zu den Kühlkanälen führen.The inserts will be conveniently inserted in the required places before the mold is engraved. There may be rotationally symmetrical parts in the area of the flags, since these are the easiest to manufacture and fit. In the area of the frames, there will have to be strips that may have stems that are not too far apart, which in turn lead to the cooling channels.

Die Dimensionierung der Wärmeleitbrücken ist von Gitter zu Gitter individuell vorzunehmen, um das Ziel der gleichzeitigen Abkühlung bei unterschiedlichen Gitterkonstruktionen zu erreichen.The dimensioning of the thermal bridges has to be carried out individually from grid to grid in order to achieve the goal of simultaneous cooling with different grid constructions.

Zur Verdeutlichung der Erfindung zeigt die Figur eine Gittergießform 1, bei der in Bereichen größerer Anhäufungen von schmelzflüssigem Blei das Grundmaterial der Form durch ein Einlegeteil 2 höherer Wärmeleitfähigkeit mit den Konturen der Fahne 3 und des Rahmens 4 ersetzt ist. Die Pfeile bezeichnen die Einlaufrichtung der Bleischmelze. In größerer Tiefe der Form, jedoch dem Einlegeteil möglichst eng benachbart, sind die Kühlwasserkanäle 5 angeordnet.To illustrate the invention, the figure shows a lattice casting mold 1, in which the base material of the mold is replaced by an insert 2 of higher thermal conductivity with the contours of the flag 3 and the frame 4 in areas of larger accumulations of molten lead. The arrows indicate the direction of the molten lead. The cooling water channels 5 are arranged at a greater depth of the mold, but as closely as possible adjacent to the insert.

Parallel oder senkrecht zu ihnen sind in die Formenoberfläche, zugleich integriert in deren Gravur, Entlüftungen 6 (sogenannte Aircells oder Ventbars) eingelassen. Diese stellen Einlegeteile ähnlich den erfindungsgemäßen Wärmeleitbrücken dar, bestehen jedoch aus dem gleichen Grundmaterial wie die Form und gestatten der vor dem einströmenden Blei verdichteten Luft in den Stegrillen ein Entweichen über die kapillaren Fugen 7 in den Entlüftungskanal 8.In parallel or perpendicular to them, vents 6 (so-called air cells or ventbars) are embedded in the mold surface, at the same time integrated in their engraving. These are inserts similar to the thermal bridges according to the invention, but consist of the same basic material as the shape and allow the air compressed in front of the inflowing lead in the web grooves to escape via the capillary joints 7 into the ventilation channel 8.

Claims (3)

1. Gießform aus zwei Formhälften zur Herstellung von Gitterplatten für Bleiakkumulatoren, insbesondere Startergittern, die neben dünnen Gitterrippen und -stegen dickere Rahmen und Plattenfahnen aufweisen, dadurch gekennzeichnet, daß die Gießform im Bereich der Materialanhäufungsstellen des Gitters wie Rahmen und Fahnen aus einem Werkstoff gebildet ist, welcher eine höhere spezifische Wärmeleitfähigkeit als das Formengrundmaterial besitzt, und daß der besser wärmeleitende Teil der Gießform in der Tiefe mit einem von einem Kühlmedium durchflossenen Kanal unmittelbar oder mittelbar kontaktiert ist.1. Casting mold from two mold halves for the production of grid plates for lead accumulators, in particular starter grids, which, in addition to thin grid ribs and webs, have thicker frames and plate flags, characterized in that the mold is formed from one material in the area of the material accumulation points of the grid, such as frames and flags , which has a higher specific thermal conductivity than the mold base material, and that the better heat-conducting part of the casting mold is directly or indirectly contacted in depth with a channel through which a cooling medium flows. 2. Gießform nach Anspruch 1, dadurch gekennzeichnet, daß die Wärmeleitfähigkeit des besser wärmeleitenden Werkstoffes zu der Wärmeleitfähigkeit des Formengru.ndmaterials etwa im gleichen Verhältnis wie die spezifische Materialanhäufung an den Plattenverdickungen zu der Materialverteilung über die eigentliche Gitterfläche steht.2. Casting mold according to claim 1, characterized in that the thermal conductivity of the better heat-conducting material to the thermal conductivity of the Formengru.ndmaterials is approximately in the same ratio as the specific material accumulation on the plate thickening to the material distribution over the actual grid area. 3. Gießform nach Anspruch 1, dadurch gekennzeichnet, daß die Formenteile aus dem besser wärmeleitenden Werkstoff unter Berücksichtigung von dessen spezifischer Wärmeleitfähigkeit hinsichtlich ihres Querschnitts so ausgelegt sind, daß der erzielbare Wärmeabfluß um das Verhältnis der Materialanhäufung an den Plattenverdickungen zu der Materialverteilung über die eigentliche Gitterfläche erhöht ist.3. Casting mold according to claim 1, characterized in that the molded parts made of the better heat-conducting material, taking into account its specific thermal conductivity with regard to its cross-section, are designed so that the achievable heat flow by the ratio of the material accumulation on the plate thickenings to the material distribution over the actual grid area is increased.
EP85111263A 1984-09-13 1985-09-06 Mould for the production of plate grids for lead accumulators Expired EP0174613B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85111263T ATE33461T1 (en) 1984-09-13 1985-09-06 CASTING MOLD FOR THE PRODUCTION OF GRID PLATES FOR LEAD ACCUMULATORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843433583 DE3433583A1 (en) 1984-09-13 1984-09-13 MOLD FOR THE PRODUCTION OF GRID PLATES FOR LEAD ACCUMULATORS
DE3433583 1984-09-13

Publications (2)

Publication Number Publication Date
EP0174613A1 true EP0174613A1 (en) 1986-03-19
EP0174613B1 EP0174613B1 (en) 1988-04-13

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EP85111263A Expired EP0174613B1 (en) 1984-09-13 1985-09-06 Mould for the production of plate grids for lead accumulators

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US (1) US4733849A (en)
EP (1) EP0174613B1 (en)
AT (1) ATE33461T1 (en)
CA (1) CA1234475A (en)
DE (2) DE3433583A1 (en)
ES (1) ES288714Y (en)
FI (1) FI80839C (en)
NO (1) NO164886C (en)

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DE4224078A1 (en) * 1992-07-21 1994-01-27 Hagen Batterie Ag Lattice mold for casting accumulator lead grids and process for their production

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EP0530503B1 (en) * 1991-08-02 1997-11-26 Canon Kabushiki Kaisha Injection-molding metal mold and use thereof for injection molding a body
DE19819007A1 (en) * 1998-04-28 1999-11-04 Jonathan Aerospace Materials E Casting apparatus for three-dimensionally structured articles

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DE1155833B (en) * 1957-11-27 1963-10-17 Winkel Machine Company Inc Mold made of two halves for grids of plates for accumulators
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GB2063738A (en) * 1979-10-30 1981-06-10 Shin Kobe Electric Machinery Metal mould for lead alloy casting

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Publication number Priority date Publication date Assignee Title
GB330018A (en) * 1929-03-11 1930-06-05 Ig Farbenindustrie Ag Improvements in moulds for the manufacture of castings from metals or alloys
DE1155833B (en) * 1957-11-27 1963-10-17 Winkel Machine Company Inc Mold made of two halves for grids of plates for accumulators
DE2260355A1 (en) * 1971-12-15 1973-06-20 Lucas Batteries Ltd ALLOY FOR LEAD-LEAD BATTERIES AND PROCESS FOR THEIR MANUFACTURING
GB2063738A (en) * 1979-10-30 1981-06-10 Shin Kobe Electric Machinery Metal mould for lead alloy casting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4224078A1 (en) * 1992-07-21 1994-01-27 Hagen Batterie Ag Lattice mold for casting accumulator lead grids and process for their production
US5415219A (en) * 1992-07-21 1995-05-16 Hagen Batterie Ag Grid casting mold for the casting of lead grids for accumulators and methods for its manufacture

Also Published As

Publication number Publication date
DE3562117D1 (en) 1988-05-19
NO853579L (en) 1986-03-14
FI853471A0 (en) 1985-09-11
EP0174613B1 (en) 1988-04-13
CA1234475A (en) 1988-03-29
FI80839C (en) 1990-08-10
US4733849A (en) 1988-03-29
FI853471L (en) 1986-03-14
NO164886B (en) 1990-08-20
ES288714Y (en) 1986-10-01
ATE33461T1 (en) 1988-04-15
NO164886C (en) 1990-11-28
ES288714U (en) 1986-01-16
DE3433583A1 (en) 1986-03-20
FI80839B (en) 1990-04-30

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