EP0219610B1 - Giessform zur Herstellung von Gitterplatten für Bleiakkumulatoren - Google Patents

Giessform zur Herstellung von Gitterplatten für Bleiakkumulatoren Download PDF

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Publication number
EP0219610B1
EP0219610B1 EP86108888A EP86108888A EP0219610B1 EP 0219610 B1 EP0219610 B1 EP 0219610B1 EP 86108888 A EP86108888 A EP 86108888A EP 86108888 A EP86108888 A EP 86108888A EP 0219610 B1 EP0219610 B1 EP 0219610B1
Authority
EP
European Patent Office
Prior art keywords
casting
casting mould
mold
mould
mould according
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.)
Expired
Application number
EP86108888A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0219610A3 (en
EP0219610A2 (de
Inventor
Bernhard E. Dr. Dipl.-Ing. Kallup
Klaus Dr. Dipl.-Phys. Salamon
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.)
VARTA Batterie AG
Original Assignee
VARTA Batterie 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 VARTA Batterie AG filed Critical VARTA Batterie AG
Priority to AT86108888T priority Critical patent/ATE38001T1/de
Publication of EP0219610A2 publication Critical patent/EP0219610A2/de
Publication of EP0219610A3 publication Critical patent/EP0219610A3/de
Application granted granted Critical
Publication of EP0219610B1 publication Critical patent/EP0219610B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B22C9/061—Materials which make up the mould

Definitions

  • the invention relates to a casting mold from two mold halves for the production of grid plates for lead accumulators, which are used as a negative mold in the respective parts of an outer metallic mold carrier.
  • Casting molds according to the generic term above are only recently, z. B. from EP-A-65 996, became known after it had succeeded, a ceramic coating of the actual metal casting mold made of cast iron, which should make cumbersome powdering with cork powder unnecessary, also in the form of an exchangeable mold lining, namely as separate insert parts, to manufacture.
  • the metal mold then only functions as a carrier for the insert parts mentioned.
  • Both the still common coating with cork powder or a sizing and the lining of the cast iron mold halves with ceramic material have the primary task of thermally isolating the melt material from the good heat-conducting mold metal and thus preventing premature solidification of the melt when pouring it in, before filling all the cavities in the mold. Furthermore, these measures serve to allow the air displaced during the filling process to escape from the mold cavity and to enable the solidified casting to be removed from the mold properly by being non-wettable.
  • the casting requirements - which are placed on an insert for the formation of a shaping separating layer - are therefore high thermal insulation properties combined with high temperature stability, porosity and non-wettability due to molten lead and lead alloys.
  • Ceramic insert parts as negative molds largely meet these requirements;
  • the inherent shape accuracy of the material comes into its own particularly when casting very fine grid plates with a filigree structure.
  • a long service life of a few thousand castings can also be expected with such insert parts.
  • their production from individual ceramic foils, which are cut, laminated together, embossed using a heatable die and finally sintered at over 1,000 ° C requires a corresponding price.
  • the invention is therefore based on the object of replacing the conventional cork powder coating of the lattice casting mold by shaping insert parts with the same insulating effect as the cork powder, but with greater economy in use.
  • a fleece constructed from microfibers is highly porous and, due to its high air content, is an ideal insulator. It therefore fulfills the requirement of thermal insulation. Due to the high air permeability of the fleece according to the invention, the mold ventilation is also ideally ensured.
  • a particularly favorable casting mold results if the fiber material is borosilicate glass.
  • the fiber material is borosilicate glass.
  • part of the silicon dioxide is replaced by boron and aluminum oxide.
  • the boron oxide reduces the coefficient of expansion of the glass and thus its sensitivity to rapid heating and cooling.
  • lead does not wet the borosilicate glass. It also fulfills the third requirement with regard to demoldability and represents a good separation layer.
  • the borosilicate glass fibers should have a diameter of 0.5 to 10 ⁇ m.
  • the base material for the fleece lining of the casting mold is highly heat-resistant plastics, preferably Teflon, or graphite.
  • a mixture of microfibers is whipped up in water so that a homogeneous slurry of the fibers is formed.
  • the slurry comparable to the pulp in the preparation of handmade paper, is then skimmed off with a sieve and dewatered, the positive of a lattice mold half being inserted into the sieve.
  • the positive of the lattice mold half like a watermark in the paper - is molded in the resulting microfiber fleece.
  • the dried fleece is still on the sieve. fixed with a binder. This gives it a cardboard-like stiffening and is now finished as one mold half.
  • the second half of the mold is produced in the same way.
  • Both fiber fleece mold halves are then inserted into the corresponding halves of a divided outer metal mold carrier, which is provided with a corresponding recess, and fixed thereon.
  • the metal mold itself is equipped in the usual way with ventilation slots, heating and cooling devices and means for temperature control.
  • the highly porous nonwoven forms according to the invention do not require any further surface treatment with a release agent or insulating material for metal casting.
  • particularly hardened inserts made of nonwoven fabric can be used win by skimming without the above-mentioned sieve insert and pressing the pulp after dewatering with a stamp having the positive shape of the lattice casting, whereby binder is fed in simultaneously with the embossing process. After the binder has fully cured, the negative form is precisely fixed in the cardboard-like non-woven material.
  • the single figure shows a lattice mold half according to the invention.
  • Half a negative 2 of a starter grid is pressed into the cardboard-like fleece plate 1 by means of a corresponding embossing mold.
  • micro-fleece forms are not free from wear. However, they can quickly be exchanged for a new pair of shapes. In view of their very simple and inexpensive production method, the limited service life is of minor importance. In contrast, the advantages of the invention lie in the fact that the mold coating is no longer dependent on the manual skill and the care of the caster, that close tolerances can be maintained in the casting due to the easy interchangeability of worn molds, and that a quick change to molds of another type of grid is also possible the changeover time is in the range of minutes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Breakers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Producing Shaped Articles From Materials (AREA)
EP86108888A 1985-09-20 1986-06-30 Giessform zur Herstellung von Gitterplatten für Bleiakkumulatoren Expired EP0219610B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86108888T ATE38001T1 (de) 1985-09-20 1986-06-30 Giessform zur herstellung von gitterplatten fuer bleiakkumulatoren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3533581 1985-09-20
DE19853533581 DE3533581A1 (de) 1985-09-20 1985-09-20 Giessform zur herstellung von gitterplatten fuer bleiakkumulatoren

Publications (3)

Publication Number Publication Date
EP0219610A2 EP0219610A2 (de) 1987-04-29
EP0219610A3 EP0219610A3 (en) 1987-09-02
EP0219610B1 true EP0219610B1 (de) 1988-10-19

Family

ID=6281491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108888A Expired EP0219610B1 (de) 1985-09-20 1986-06-30 Giessform zur Herstellung von Gitterplatten für Bleiakkumulatoren

Country Status (7)

Country Link
US (1) US4744540A (ja)
EP (1) EP0219610B1 (ja)
JP (1) JPS6268672A (ja)
AT (1) ATE38001T1 (ja)
CA (1) CA1259469A (ja)
DE (2) DE3533581A1 (ja)
NO (1) NO167012C (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4224078A1 (de) * 1992-07-21 1994-01-27 Hagen Batterie Ag Gittergießform zum Gießen von Akkumulatoren-Bleigittern und Verfahren zu deren Herstellung

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6440168A (en) * 1987-08-07 1989-02-10 Yuasa Battery Co Ltd Mold for lead alloy
US6701998B2 (en) * 2002-03-29 2004-03-09 Water Gremlin Company Multiple casting apparatus and method
US8701743B2 (en) 2004-01-02 2014-04-22 Water Gremlin Company Battery parts and associated systems and methods
US20060216595A1 (en) * 2005-03-22 2006-09-28 Holliday Rex W Battery assembly having improved lug profile
PL3059785T3 (pl) 2009-04-30 2020-03-31 Water Gremlin Company Części akumulatora mające cechy utrzymujące i uszczelniające
WO2011090946A1 (en) * 2010-01-19 2011-07-28 Water Gremlin Company Mold assemblies including removable inserts and associated methods of use and manufacture
US9748551B2 (en) 2011-06-29 2017-08-29 Water Gremlin Company Battery parts having retaining and sealing features and associated methods of manufacture and use
CN102527927B (zh) * 2012-02-27 2013-06-05 超威电源有限公司 一种板栅脱模剂
US9954214B2 (en) 2013-03-15 2018-04-24 Water Gremlin Company Systems and methods for manufacturing battery parts
CN103624211B (zh) * 2013-11-26 2015-09-16 河南超威电源有限公司 蓄电池板栅脱模剂及其制备方法
HU230572B1 (hu) 2014-05-20 2016-12-28 Andrew Sárosi George Akkumulátorrács kialakítás, az akkumulátorrácsokkal kialakított akkumulátor cella és az akkumulátor cellákkal kialakított akkumulátor
MX2021006454A (es) 2018-12-07 2021-07-02 Water Gremlin Co Partes de bateria que tienen barreras contra acidos sin solventes y sistemas y metodos asociados.

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
DE860242C (de) * 1943-10-20 1952-12-18 Philips Nv Verfahren zur Herstellung von Gussstuecken
DE825454C (de) * 1948-11-30 1951-12-20 Noleiko Norddeutsche Leichtmet Dauerform fuer Metallguss
US2882568A (en) * 1954-10-12 1959-04-21 Int Nickel Co Lining for ingot molds
US3023468A (en) * 1959-12-02 1962-03-06 Union Carbide Corp Mold liner
US3534803A (en) * 1967-04-20 1970-10-20 Nat Res Dev Method of casting in a permanent carbon mold
JPS5117936B1 (ja) * 1971-04-01 1976-06-05
US3761047A (en) * 1971-08-09 1973-09-25 Gould Inc Mold coating
JPS5549033B2 (ja) * 1974-05-15 1980-12-09
JPS52340A (en) * 1974-12-26 1977-01-05 Shin Kobe Electric Machinery Casting mold for plate grid of storage battery
US4031283A (en) * 1975-11-20 1977-06-21 E. I. Du Pont De Nemours And Company Polytetrafluoroethylene felt
FR2362800A1 (fr) * 1976-08-27 1978-03-24 Doittau Sa Produits Metallurg Perfectionnement au moulage par filtration des elements de garnissage pour reservoirs contenant des metaux en fusion
JPS53123330A (en) * 1977-04-04 1978-10-27 Toray Industries Mold
FR2399136A1 (fr) * 1977-07-26 1979-02-23 Dba Dispositif de moulage pour grille-support d'electrode de batterie, et procedes de fabrication d'une grille-support
US4196769A (en) * 1978-03-20 1980-04-08 Remet Corporation Ceramic shell mold
JPS56134047A (en) * 1980-03-22 1981-10-20 Sumitomo Metal Ind Ltd Production of hollow steel ingot
JPS5779063A (en) * 1980-11-06 1982-05-18 Honda Motor Co Ltd Production of fiber reinforced composite material
EP0065996B1 (de) * 1981-05-29 1984-08-22 Rosenthal Technik AG Keramikauskleidung für Metallgiessformen und ein Verfahren zu ihrer Herstellung
SU1177026A1 (ru) * 1981-12-16 1985-09-07 Smirnov Vladimir E Состав дл обсыпки оболочковых форм
US4614630A (en) * 1984-04-02 1986-09-30 Minnesota Mining And Manufacturing Co. Mold having ceramic insert, method for injection molding using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4224078A1 (de) * 1992-07-21 1994-01-27 Hagen Batterie Ag Gittergießform zum Gießen von Akkumulatoren-Bleigittern und Verfahren zu deren Herstellung

Also Published As

Publication number Publication date
US4744540A (en) 1988-05-17
EP0219610A3 (en) 1987-09-02
EP0219610A2 (de) 1987-04-29
NO862914L (no) 1987-03-23
DE3533581A1 (de) 1987-04-02
ATE38001T1 (de) 1988-11-15
NO862914D0 (no) 1986-07-18
DE3660945D1 (en) 1988-11-24
JPS6268672A (ja) 1987-03-28
NO167012B (no) 1991-06-17
NO167012C (no) 1991-09-25
CA1259469A (en) 1989-09-19

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