EP0581170A1 - Moule de grille pour coulée des grilles d'accumulateur en plomb et procédé - Google Patents
Moule de grille pour coulée des grilles d'accumulateur en plomb et procédé Download PDFInfo
- Publication number
- EP0581170A1 EP0581170A1 EP93111610A EP93111610A EP0581170A1 EP 0581170 A1 EP0581170 A1 EP 0581170A1 EP 93111610 A EP93111610 A EP 93111610A EP 93111610 A EP93111610 A EP 93111610A EP 0581170 A1 EP0581170 A1 EP 0581170A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal oxide
- casting mold
- layer
- lattice
- mold 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 10
- 238000005266 casting Methods 0.000 claims abstract description 52
- 239000000919 ceramic Substances 0.000 claims abstract description 30
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 26
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 26
- 230000000295 complement effect Effects 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910001060 Gray iron Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000007750 plasma spraying Methods 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000002923 metal particle Substances 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims 3
- 229910001928 zirconium oxide Inorganic materials 0.000 claims 3
- 229910052681 coesite Inorganic materials 0.000 claims 2
- 229910052906 cristobalite Inorganic materials 0.000 claims 2
- 229910052682 stishovite Inorganic materials 0.000 claims 2
- 229910052905 tridymite Inorganic materials 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 238000012805 post-processing Methods 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 229910052814 silicon oxide Inorganic materials 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000007799 cork Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S164/00—Metal founding
- Y10S164/01—Battery
Definitions
- the invention relates to a grid mold for casting accumulator lead grids according to the preamble of claim 1 and a method for its production.
- thermal insulation layer In order to produce accumulator lead grids in gravity casting, such grating molds made of steel and gray cast iron are generally used.
- the geometry of the lead mesh to be produced is introduced into the base body by machining with a certain addition for the thermal insulating layer to be applied by compressed air spraying, which consists of cork flours with grain sizes ⁇ 200 mesh, which are coated with a binder, e.g. Water glass or relatin are offset.
- the suspension of cork powder and binder is applied to the molded surface of the base body already provided with the casting profile using a spray device.
- the layer thickness of the thermal insulation layer is approx. 0.15 mm.
- the thermal insulation layer also fulfills the function of a mold release agent.
- the mold temperature control which is necessary in order to achieve the corresponding production parameters, takes place through cooling channels provided in the base body, through which a suitable fluid is passed.
- the casting mold is brought to the desired temperature level by means of additional heaters.
- the lead grid is then poured and after a certain time the mold is cooled by introducing a coolant into the cooling channels.
- the thermal insulation layer prevents the lead melt from solidifying too quickly.
- the reason for the wear of the mold coating material is the high thermal load due to the operating temperature of the mold and the melt temperature as well as the flow rate of the liquid lead alloy.
- the molds are made of two sheets of e.g. 30 to 50 mm thick. Cast iron with nodular graphite is also suitable as casting material or, for less demanding shapes, inexpensive and faster to obtain gray cast iron.
- a method for producing a device for casting lead grids for electrical battery plates is already known (DE 35 29 725 A1, DE 36 03 657 A1), which contains a ceramic material, the surface of which forms the casting mold and is in direct contact with the mold Form incoming melting material stands, the ceramic material has a high porosity and is produced by flame spraying.
- the flame-sprayed ceramic layer is adapted to the exact contour of the cast part by mechanical, material-removing processing.
- An intermediate layer located between the base body and the metal oxide layer serves to promote adhesion.
- a disadvantage of the known method is the lack of thermal insulation on the one hand and the need for mechanical reworking of the hard ceramic layer on the other hand.
- the invention aims to create a further lattice mold for casting accumulator lead grids in the gravity or die casting process, which serve as a carrier for active materials in lead-acid batteries.
- it is the object of the invention to create a lattice casting mold the thermal insulation layers of which do not have to be post-treated or renewed during the entire service life or period of use, nevertheless perfectly reproducible lead grids are to be produced during the entire service life of the casting mold, namely not significantly reduced casting cycle time.
- the use or aftertreatment with release agents should also be avoided in the lattice casting mold according to the invention.
- the metal oxide layers applied according to the invention by plasma spraying are characterized by high wear resistance and Dimensional stability.
- the high-temperature fiber ceramic layer underneath also prevents the heat contained in the lead melt from being dissipated too quickly, as a result of which the lead melt is kept liquid longer.
- the high-temperature fiber ceramic has the advantage that it can absorb the mechanical forces occurring during the subsequent application of the metal oxide layer by means of plasma spraying without the risk of deformation, so that the complementary lattice geometry introduced into the fiber ceramic layer is fully retained even when the metal oxide layer is sprayed on.
- the area around the mold surfaces of the casting mold is thus formed by a sandwich construction, the surface consisting of Al203 or Zr02 having the highest mechanical strength, while the subsequent ceramic fiber layer forms the actual casting geometry body, which ensures the highest thermal insulation with sufficient mechanical strength .
- the base body of the casting mold can consist of simple gray cast iron or globular graphite cast iron or steel, so that it has the necessary mechanical strength for receiving the mold guide elements, cooling channels, thermal sensors, ejectors, mold fastening elements, etc.
- Vent slots are provided in the molds which are customary today. Vent slots of this type can also be provided in the sandwich structure according to the invention.
- Porous structures in the metal oxide layer, but also in the fiber ceramic layer can be achieved, for example, by chemically removing certain oxides, metal particles or heat-stable organic compounds, which are added to the actual spray material or the fiber ceramic layer are.
- Porous layers can also be achieved by adding carbon particles in the form of graphite, which are then oxidized to CO2.
- the invention also relates to an accumulator grid produced using the casting mold according to the invention, which is characterized by particular dimensional stability and a surface which is particularly suitable for the purposes of an accumulator grid.
- the two plates 11, 12 of a casting mold according to the invention contain cooling channels 21 and heating means 22, by means of which the plates can each be brought to the temperature suitable for a specific stage of the casting process.
- the left plate 11 in the drawing is also provided with only schematically indicated ejectors and form fasteners 23, the right plate 12 in the drawing can be folded away from the plate 11 by a hinge (not shown) in order to be able to remove the finished lead grille from the mold .
- the structure on which the two plates 11, 12 are positioned exactly relative to one another is indicated at 26.
- Each plate 11, 12 consists of a gray cast iron base body 14 or 15.
- recesses 24 and 25 are provided, which extend over the entire casting area of the mold.
- High-temperature fiber ceramic layers 16, 17 are introduced into the recesses 24, 25 and fastened there in a suitable manner.
- the connecting surfaces between the base bodies 14, 15 on the one hand and the high-temperature fiber ceramic layers 16, 17 on the other hand are essentially flat.
- the thickness of the fiber ceramic layers 16, 17 is 10 mm.
- the casting profile 13 corresponding to the lead mesh to be produced is worked in, plus an addition for a subsequently applied metal oxide layer.
- An approximately 0.5 mm thick metal oxide layer 18 or 19 is then applied to the fiber ceramic layers 16, 17 by plasma spraying, which forms the molded surface provided with the casting profile 13.
- the fiber ceramic layer 16, 17 prevents the lead melt melted into the casting mold from cooling too quickly when it is being produced.
- the fiber ceramic layer is sufficiently strong to tolerate the plasma spraying of the metal oxide powder without deformation on the one hand and also to form a sufficiently solid base for the applied metal oxide layer.
- the fiber ceramic layer can be fastened to the gray cast iron base body 14, 15 either with a mechanical tensioning frame or by means of tensioning bolts or inserted and glued into the grooves provided in the base body. A combination of both methods is also possible.
- the surface structure of a grid produced according to the invention is particularly fine-grained and leads to a large contact area between the grid and the mass.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4224078A DE4224078A1 (de) | 1992-07-21 | 1992-07-21 | Gittergießform zum Gießen von Akkumulatoren-Bleigittern und Verfahren zu deren Herstellung |
DE4224078 | 1992-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0581170A1 true EP0581170A1 (fr) | 1994-02-02 |
Family
ID=6463775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93111610A Withdrawn EP0581170A1 (fr) | 1992-07-21 | 1993-07-20 | Moule de grille pour coulée des grilles d'accumulateur en plomb et procédé |
Country Status (4)
Country | Link |
---|---|
US (1) | US5415219A (fr) |
EP (1) | EP0581170A1 (fr) |
DE (1) | DE4224078A1 (fr) |
ZA (1) | ZA935258B (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7066234B2 (en) | 2001-04-25 | 2006-06-27 | Alcove Surfaces Gmbh | Stamping tool, casting mold and methods for structuring a surface of a work piece |
US6759069B2 (en) * | 2001-07-23 | 2004-07-06 | Robin S. Gray | Food condiment, composition, method of molding, and method of using |
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 |
ES2746292T3 (es) * | 2009-04-30 | 2020-03-05 | Water Gremlin Co | Piezas de bateria que tienen elementos de retención y sellado |
DE102009033402A1 (de) * | 2009-07-15 | 2011-01-27 | Lahnwerk Gmbh | Formeinlage für einen Gießkern und/oder eine Gießform sowie Gießkern und/oder Gießform mit einer Formeinlage |
US20110174459A1 (en) * | 2010-01-19 | 2011-07-21 | Water Gremlin Company | Mold assemblies including removable inserts and associated methods of use and manufacture |
DE102011078066A1 (de) * | 2011-06-24 | 2012-12-27 | Oskar Frech Gmbh + Co. Kg | Gießtechnisches Bauteil und Verfahren zum Aufbringen einer Korrosionsschutzschicht |
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 |
US9180511B2 (en) * | 2012-04-12 | 2015-11-10 | Rel, Inc. | Thermal isolation for casting articles |
DE102013019309B4 (de) | 2012-11-14 | 2014-07-24 | Technische Universität Bergakademie Freiberg | Verfahren zum Gießen von offenporigen zellularen Metallteilen |
US9954214B2 (en) | 2013-03-15 | 2018-04-24 | Water Gremlin Company | Systems and methods for manufacturing battery parts |
US11283141B2 (en) | 2018-12-07 | 2022-03-22 | Water Gremlin Company | Battery parts having solventless acid barriers and associated systems and methods |
DE102020210913A1 (de) * | 2020-08-28 | 2022-03-03 | Oskar Frech Gmbh + Co. Kg | Gießtechnisches Bauteil mit Korrosionsschutzschichtaufbau |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55141351A (en) * | 1979-04-24 | 1980-11-05 | Natl Res Inst For Metals | Molding metal mold |
GB2063738A (en) * | 1979-10-30 | 1981-06-10 | Shin Kobe Electric Machinery | Metal mould for lead alloy casting |
EP0065996A1 (fr) * | 1981-05-29 | 1982-12-08 | Rosenthal Technik AG | Garnissage céramique pour moules métalliques et son procédé de fabrication |
EP0212157A2 (fr) * | 1985-08-20 | 1987-03-04 | VARTA Batterie Aktiengesellschaft | Dispositif de coulée de grillages de plomb pour plaques d'accumulateurs et procédé pour sa fabrication |
EP0219610A2 (fr) * | 1985-09-20 | 1987-04-29 | VARTA Batterie Aktiengesellschaft | Moule pour la production de plaques à grilles pour accumulateurs à plomb |
DE3603657A1 (de) * | 1986-02-06 | 1987-10-01 | Varta Batterie | Verfahren zur herstellung einer giessform fuer batteriegitter |
DE3806987A1 (de) * | 1988-03-03 | 1989-09-14 | Thyssen Industrie | Verfahren zur herstellung von gussstuecken nach dem wachsausschmelzverfahren |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2903375A (en) * | 1956-08-08 | 1959-09-08 | Renault | Method of coating a mould for use in a foundry |
US3779816A (en) * | 1971-08-26 | 1973-12-18 | Gould Inc | Method of making mold for forming objects |
US3789910A (en) * | 1972-11-07 | 1974-02-05 | Gen Motors Corp | Dip casting method using transpirationally cooled mold cavity |
US4085792A (en) * | 1975-10-02 | 1978-04-25 | General Battery Corporation | Method of casting lead alloy automotive battery parts |
CH650425A5 (de) * | 1981-05-21 | 1985-07-31 | Alusuisse | Kokille mit waermeisolierender schutzschicht. |
DE3216432A1 (de) * | 1982-05-03 | 1983-11-03 | Varta Batterie Ag, 3000 Hannover | Verfahren und vorrichtung zum giessen von elektrodengittern fuer elektrische akkumulatoren |
DE3433583A1 (de) * | 1984-09-13 | 1986-03-20 | Varta Batterie Ag, 3000 Hannover | Giessform zur herstellung von gitterplatten fuer bleiakkumulatoren |
JPS61286037A (ja) * | 1985-06-12 | 1986-12-16 | Yuasa Battery Co Ltd | 鉛合金の鋳造法 |
DE3529725A1 (de) * | 1985-08-20 | 1987-03-05 | Varta Batterie | Vorrichtung zum giessen von bleigittern fuer elektrische akkumulatorenplatten und verfahren zu ihrer herstellung |
JPH02187252A (ja) * | 1989-01-12 | 1990-07-23 | Yuasa Battery Co Ltd | 鉛合金用鋳型 |
IT1250214B (it) * | 1991-11-22 | 1995-04-03 | Rivestimento al nitruro di titanio per conchiglie per pistoni. |
-
1992
- 1992-07-21 DE DE4224078A patent/DE4224078A1/de not_active Withdrawn
-
1993
- 1993-07-20 EP EP93111610A patent/EP0581170A1/fr not_active Withdrawn
- 1993-07-20 US US08/094,601 patent/US5415219A/en not_active Expired - Fee Related
- 1993-07-21 ZA ZA935258A patent/ZA935258B/xx unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55141351A (en) * | 1979-04-24 | 1980-11-05 | Natl Res Inst For Metals | Molding metal mold |
GB2063738A (en) * | 1979-10-30 | 1981-06-10 | Shin Kobe Electric Machinery | Metal mould for lead alloy casting |
EP0065996A1 (fr) * | 1981-05-29 | 1982-12-08 | Rosenthal Technik AG | Garnissage céramique pour moules métalliques et son procédé de fabrication |
EP0212157A2 (fr) * | 1985-08-20 | 1987-03-04 | VARTA Batterie Aktiengesellschaft | Dispositif de coulée de grillages de plomb pour plaques d'accumulateurs et procédé pour sa fabrication |
EP0219610A2 (fr) * | 1985-09-20 | 1987-04-29 | VARTA Batterie Aktiengesellschaft | Moule pour la production de plaques à grilles pour accumulateurs à plomb |
DE3603657A1 (de) * | 1986-02-06 | 1987-10-01 | Varta Batterie | Verfahren zur herstellung einer giessform fuer batteriegitter |
DE3806987A1 (de) * | 1988-03-03 | 1989-09-14 | Thyssen Industrie | Verfahren zur herstellung von gussstuecken nach dem wachsausschmelzverfahren |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 5, no. 10 (M - 51)<682> 22 January 1981 (1981-01-22) * |
Also Published As
Publication number | Publication date |
---|---|
US5415219A (en) | 1995-05-16 |
DE4224078A1 (de) | 1994-01-27 |
ZA935258B (en) | 1994-04-26 |
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