EP0463179A1 - Hochdruck-formvorrichtung - Google Patents

Hochdruck-formvorrichtung Download PDF

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Publication number
EP0463179A1
EP0463179A1 EP91902747A EP91902747A EP0463179A1 EP 0463179 A1 EP0463179 A1 EP 0463179A1 EP 91902747 A EP91902747 A EP 91902747A EP 91902747 A EP91902747 A EP 91902747A EP 0463179 A1 EP0463179 A1 EP 0463179A1
Authority
EP
European Patent Office
Prior art keywords
casting
pressure
slip
casting mold
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.)
Withdrawn
Application number
EP91902747A
Other languages
English (en)
French (fr)
Other versions
EP0463179A4 (en
Inventor
Keiichiro Research Laboratories Of Isomura
Toshihiko Research Laboratories Of Funahashi
Kazuki Tokyo Main Office Of Kawasaki Ogasahara
Yasuhiro Research Laboratories Of Kawasaki Habu
Susumu Shinohara
Masakuni Esaki
Hideo Yoshikawa
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.)
SHIN-EI KIKO Co Ltd
JFE Steel Corp
Shin Ei Kiko Co Ltd
Original Assignee
SHIN-EI KIKO Co Ltd
Shin Ei Kiko Co Ltd
Kawasaki Steel Corp
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 SHIN-EI KIKO Co Ltd, Shin Ei Kiko Co Ltd, Kawasaki Steel Corp filed Critical SHIN-EI KIKO Co Ltd
Publication of EP0463179A1 publication Critical patent/EP0463179A1/de
Publication of EP0463179A4 publication Critical patent/EP0463179A4/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
    • B28B7/386—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/265—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B28B5/06—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping in moulds on a turntable
    • B28B5/08—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping in moulds on a turntable intermittently rotated

Definitions

  • the present invention relates to a high-pressure slip casting apparatus and, more specifically, to a high-pressure slip casting apparatus employing a special slip-casting mold having minute pores, high durability, high strength and good product disengageability, and capable of slip-casting a high-quality molding in a short process time.
  • Slip casting which is one of powder molding techniques, is applied particularly to manufacturing ceramics, tableware, an electrical insulator and such. Recently, slip casting has been applied to manufacturing fine ceramics of alumina, silicon nitride and zirconia and is regarded as a prospective molding technique for producing parts for industrial usages.
  • Fig. 11 shows a conventional slip casting apparatus.
  • a prepared slip is stirred and deaerated by a vacuum deaerating stirrer 2 evacuated by a vacuum pump 1. After the slip has completely been deaerated, the internal pressure of the vacuum deaerating stirrer 2 is increased to the atmospheric pressure. Subsequently, the vacuum deaerating stirrer 2 is pressurized to feed the slip by pressure to a casting table 3.
  • a casting mold 4 previously set on the casting table 3 is filled with the slip for molding.
  • the slip casting apparatus is provided also with valves 5a to 5e, a compressed gas source 6 and a pressure reducing valve 6a.
  • the casting mold 4 is a plaster mold.
  • the plaster mold has advantages including excellent water absorbency, good product disengageability, high dimensional accuracy, and capability of being formed in a large size at a low cost.
  • the plaster mold has disadvantages including inferior water resistance, low pressure durability, poor abrasion resistance, and possibility of contaminating the slip by Ca2+ ions eluted from the plaster mold. Since a molding is formed by the sedimentation of the slip through the absorption of the water contained in the slip by the capillary action of the pores in the plaster mold, a process time in the range of 10 to 20 minutes is necessary for molding a molding having a wall thickness in the range of 5 to 7 mm. Furthermore, a process time required for sedimentation in the second molding cycle is longer than that in the first molding cycle, and the process time increases with the number of molding cycles. Accordingly, a plurality of plaster molds must be prepared.
  • casting molds of materials other than plaster such as resin molds, resin-ceramic molds, metal-ceramic molds and metal molds, have been developed to overcome disadvantages attributable to the use of plaster molds.
  • those casting molds of materials other than plaster have been used only for molding porcelain and pottery due to their intrinsic disadvantages.
  • a casting mold disclosed in Japanese Patent Laid-open (Kokai) No. 63-21105 has the following disadvantages.
  • the present invention provides a slip casting apparatus capable of solving problems in the conventional slip casting techniques and of casting a product of high quality in a short process time.
  • the slip casting apparatus employs a casting mold having the following characteristics.
  • the present invention provides a high-pressure slip casting apparatus comprising: a porous casting mold formed of a material containing 10 to 50% by weight boron nitride and at least one of other ceramic materials; a casting table for holding the casting mold, provided with a product disengaging device; a vacuum deaerating stirrer for deaerating and stirring a casting slip; a pressure intensifier provided between the casting table and the vacuum deaerating stirrer to pressurize the casting slip; and a pressure regulating piping system interconnecting the casting table, the vacuum deaerating stirrer and the pressure intensifier.
  • the apparatus is provided preferably with an ultrasonic cleaner and/or a drier, in order to be able to mold a slip of very fine particles efficiently without choking porosity with the slip.
  • a high-pressure slip casting apparatus comprises: a casting mold cleaning device; a casting mold drying device; a casting device; a product disengaging device; and a casting mold conveying device for sequentially conveying a casting mold to the casting mold cleaning device, the casting mold drying device, the casting device and the product disengageing device.
  • the high-pressure slip casting apparatus is capable of sequentially repeating a casting cycle for slip casting at a high efficiency.
  • the inventors of the present invention have found through comparative studies of casting molds of different materials for slip casting that a casting mold formed of a composite sintered material containing boron nitride (BN) and one or a plurality of other ceramic materials has excellent characteristics, and have invented a slip casting apparatus on the basis of such knowledge.
  • BN boron nitride
  • BN is poor in sinterability, requires high-pressure pressing for sintering, and has a comparatively low abrasion resistance.
  • the inventors of the present invention intended to use, in combination with BN, ceramic materials capable of being densely sintered together with BN by low-pressure pressing or under pressurized atmosphere and having high abrasion resistance and high pressure durability in anticipation of the following composite effects.
  • the pores must penetrate the wall of the casting mold so that the casting mold is gas-permeable to secure sufficient moisture absorbency for the casting mold.
  • Ceramic materials having high abrasion resistance such as Si3N4, SiC, SIALON, ZrO2, Al2O3, AlN and mullite, are suitable for forming a casting material employed in the present invention. These ceramic materials may be used either individually or in combination according to the purpose.
  • the BN content may be determined according to the material to be molded.
  • the diameter of the pores and the porosity of the casting mold can optionally be determined by selectively determining the particle size of the materials and the respective contents of the materials.
  • the BN content of the material for forming the casting mold is in the range of 10 to 50% by weight
  • the average diameter of the pores of the casting mold is in the range of 0.1 to 2 ⁇ m
  • the porosity of the casting mold is in the range of 10 to 40%.
  • the casting mold meeting such conditions may keep permeability without porosity choking even with a particulate material, ensures good product disengageability, withstands high-pressure casting under a considerably high pressure and improves the ability of mass production.
  • the excellent abrasion resistance of the casting mold ensures cast products in a constant surface accuracy, and hence the casting mold is applicable to casting articles required to meet severe quality standards, such as automotive parts.
  • a fired blank for the casting mold can be finished by machining, similarly to dies for pressing and injection molding, in a very high accuracy, and hence cast products can be cast by using the casting mold in a very high accuracy.
  • the conventional casting mold has a low pressure durability or if it has a high pressure durability then it is subjected to poor product disengageablity and porosity choking inherence.
  • the casting mold in accordance with the present invention has a high pressure durability and good product disengageability, and keeps good permeability even in use for super-high-pressure slip casting.
  • the conventional slip casting apparatus shown in Fig. 11 which pressurizes a slip by a compressed gas has a complicated construction, is expensive and has the danger from bursting. Accordingly, a safe, highly productive slip casting apparatus must be used in combination with the casting mold to achieve high-pressure slip casting.
  • the present invention provides a high-pressure slip casting apparatus meeting such requirements and also capable of feeding a slip by a compressed gas of a pressure below 10 kg/cm2.
  • a vacuum deaerating stirrer 2 is connected to a casting mold 4 provided on a casting table 3 by a pipe line 12.
  • a slip pressure intensifier 11 is connected to the pipe line 12.
  • a vacuum pump 1 and a compressed gas source 6 are connected to the vacuum deaerating stirrer 2 and the casting mold 4 provided on the casting table 3.
  • a clamping cylinder actuator 8 is connected to the casting mold 4. The clamping cylinder actuator 8 is operated by a hydraulic unit 9.
  • Fig. 2 is a diagrammatic view showing the vacuum deaerating stirrer 2 shown in Fig. 1
  • Fig. 3 is a diagrammatic view of the slip pressure intensifier 11 shown in Fig. 1
  • Fig. 4 is a diagrammatic view of the casting table 3
  • Fig 5 is a diagramtic view of assistance in explaining the operation of the slip pressure intensifier 11.
  • a slip prepared beforehand is poured into the vacuum deaerating stirrer 2, and after the vacuum deaerating stirrer 2 is sealed, the slip is stirred in the vacuum deaeating stirrer 2 at a reduced pressure of 700 mmHg or higher evacuated by the vacuum pump 1.
  • a valve 5c is closed and a valve 5b is opened to raise the internal pressure of the vacuum deaerating stirrer 2 to the atmospheric pressure.
  • the casting mold 4 is set on the casting table 3.
  • gas pressure to be supplied to the slip is reduced in the range of 0.1 to 2 kg/cm2 adjusted by a pressure reducing valve 6a.
  • valves 5a, 5e and 5f are opened and the valve 5b is closed to supply compressed air to the vacuum deaerating stirrer 2, so that the slip is discharged from the vacuum deaerating stirrer 2 by the compressed air to fill up the lower chamber 11c (Fig. 5) of the pressure intensifier 11, and the casting mold 4 with the slip.
  • the lower piston 11a of the pressure intensifier 11 is lowered beforehand to its lowest position by operating a pressure reducing valve 6b and a valve 5g before supplying the slip into the lower chamber 11c to prevent making air bubbles in the slip.
  • a valve 5h is opened to supply the compressed air of a pressure in the range of 4 to 8 kg/cm2 adjusted by a pressure reducing valve 6d to a chamber under the upper piston 11b in order to apply pressure to the lower surface of the upper piston 11b to balance the resistance of the sealing member of the upper piston 11b, so that the lower chamber 11c can readily be filled up with the slip.
  • valve 5f is closed, the pressure reducing valve 6b is operated to adjust the pressure of the compressed air to a pressure in the range of 5 to 9.9 kg/cm2, and then the valve 5g is opened to apply the pressure to the upper piston 11b. Consequently, the slip filling up the lower chamber 11c is pressurized by the lower piston 11c and the pressure prevailing in the lower chamber 11c is transmitted to the slip supplied to the casting mold 4 to accelerate the casting speed.
  • the valve 5g is opened, and then the valves 5f and 5b are opened.
  • a valve 5i is opened to supply the compressed air through the pressure reducing valve 6c to the bottom half mold of the casting mold 4 to press the molding to the upper half mold of the casting mold 4, and then the top half mold is raised. Then, the valve 5i is closed, a pallet is placed under the molding, and then a valve 5k is opened to mount the molding on the pallet. The residual slip is discharged through a valve 5d.
  • Indicated at 8 is a mold clamping cylinder actuator, and at 9 is a hydraulic unit for controlling the mold clamping cylinder actuator 8. It is possible to construct a mass production system by additionally providing the high-pressure slip casting apparatus with a molding removing device, an electric circuit, solenoid valves and sensors.
  • a high-pressure slip casting apparatus embodying the present invention capable of continuous casting operation will be described hereinafter with reference to Figs. 6 and 7.
  • a system shown in Fig. 6 has a casting table 3 provided with a single casting mold 4 and is capable of cleaning and drying the casting mold 4. Shown also in Fig. 6 are a cold force feed device 21, a hot force feed device 22, a cleaning liquid supply device 23, an ultrasonic cleaning device 24, and an operating device 26 for operating the ultrasonic cleaning device 24.
  • compressed air is supplied to the bottom half mold 4a of the casting mold 4, and vacuum suction is applied to the top half mold 4b of the casting mold 4 so that the molding 15 is attracted to the top half mold 4b, the top half mold 4b is raised, and then compressed air is supplied to the top half mold 4b to disengage the cast product 15 from the top half mold 4b.
  • Fig. 7 shows the system in a state for cleaning operation subsequent to the state shown in Fig. 6.
  • ultrasonic cleaning device 24 which is held on one side of the casting.
  • the cleaning water tank 24 held on one side of the casting mold 4 in the state shown in Fig. 6, is moved by a cylinder actuator 26 and is guided by a horizontal guide 25 and a vertical guide 27 to enclose the bottom half mold 4a as shown in Fig. 7, and then the top half mold 4b is lowered into the ultrasonic cleaning device 24.
  • the cleaning liquid supply device 23 supplies a cleaning liquid into the ultrasonic cleaning device 24.
  • the cleaning liquid supply device 23 drains the cleaning liquid to dry the casting mold 4.
  • the use of a microwave oscillator for drying the casting mold 4 removes moisture from the casting mold 4 in a short process time. Very fine ceramic particles adhere to the inner surface of the porous casting mold to reduce the casting speed of the casting apparatus.
  • the casting mold is cleaned by ultrasonic cleaning to remove the fine ceramic particles completely from the casting mold and to reduce the cleaning time required for cleaning the casting mold by compressed air.
  • a continuous slip casting apparatus in another embodiment according to the present invention will be described hereinafter with reference to Figs. 8, 9 and 10.
  • the high-pressure slip casting apparatus is equipped with a casting mold conveying device of a turntable type.
  • a casting mold cleaning device 30, a casting mold drying device 40, a high-pressure slip casting device 50 and a product disengaging device 60 are arranged around a turntable 70.
  • the turntable 70 locates a casting mold sequentially at positions corresponding respectively to those devices.
  • the casting mold cleaning device 30 has an arm 32 which holds the top half mold of the casting mold and moves the same vertically, and a cylinder actuator 31 which moves a tank 33 for containing a cleaning liquid vertically.
  • the tank 33 may be provided with an ultrasonic cleaning device.
  • a cleaning liquid supply/drain device 34 supplies a cleaning liquid through a tube 35 to the tank 33.
  • the drying device 40 is provided with pipes for blowing high-temperature drying gas against the casting mold.
  • the pipes are extended through the rotary shaft of the turntable 70 and are connected to a drying gas supply device provided in a base 90.
  • the high-pressure slip casting device has a pressing cylinder actuator 51, holds the casting mold between upper and lower die sets 53, feeds a slurry by force through a slurry feed pipe into the casting mold for casting in a manner similar to that described previously with reference to Fig. 1.
  • the slurry feed pipe is extended through the rotary shaft of the turntable 70.
  • the product disengaging device is actuated for operation similar to that described with reference to Fig. 1.
  • the product disengaging device 60 comprises an arm 62 for holding the top half mold of the casting mold, a cylinder actuator 61 for raising the arm 62, a swing arm 63 for supporting a product removed from the casting mold, and a simple robot 64 for turning the swing arm 63 to transfer the product from the swing arm 63 to a conveyor 64.
  • a driving unit 80 for driving the turntable 70 turns the turntable 70 intermittently in the direction of an arrow 71 to transfer the casting mold in synchronism with the actions of the casting mold cleaning device 30, the casting mold drying device 40, the high-pressure slip casting device 50 and the product disengaging device 60.
  • This high-pressure slip casting apparatus carries out the slip casting operation, the product disengaging operation, the casting mold cleaning operation and the casting mold drying operation by the separate devices, so that the process time is reduced and the mass production of cast products is possible.
  • the number of casting molds to be arranged on the turntable 70 is determined taking into consideration a process time required for casting and a process time required for removing the products from the casting mold, cleaning the casting mold and drying the casting mold so that the slip casting process can most efficiently be completed.
  • the high-pressure slip casting apparatus shown in Fig. 1 was operated for casting a pottery molding slip under different casting conditions. Process times respectively for the different casting conditions needed for the completion of casting a cast product molding and removing the product are tabulated in Table 1.
  • Table 1 the casting cycle needs a comparatively short process time, while the casting mold cleaning and drying cycle needs a comparatively long time. Accordingly, the curtailment of the process time needed for the casting mold cleaning and drying cycle improves the productivity of the apparatus, which can be achieved by the use of the BN-based casting mold having satisfactory spelling resistance and heat resistance.
  • the porosity choking of the casting mold with the fine particles of the slip can be eliminated by the curtailment of the process time needed for cleaning and drying the casting mold.
  • the casting cycle needs a process time in the range of 10 to 20 min.
  • the high-pressure slip casting apparatus of the present invention is able to cast a product having a wall thickness on the order of 5 mm when the slip is pressurized at 200 kg/cm2 by the pressure intensifier in a casting time in the range of 10 to 20 sec for a pottery slip, in the range of 5 to 10 sec for an Al2O3 slip, and in the range of 5 to 8 sec for a Si3N4 slip.
  • the casting time can further be reduced by increasing the pressure applied to the slip.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP19910902747 1990-01-18 1991-01-17 Apparatus for molding under high pressure Withdrawn EP0463179A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7139/90 1990-01-18
JP713990 1990-01-18

Publications (2)

Publication Number Publication Date
EP0463179A1 true EP0463179A1 (de) 1992-01-02
EP0463179A4 EP0463179A4 (en) 1992-07-08

Family

ID=11657746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910902747 Withdrawn EP0463179A4 (en) 1990-01-18 1991-01-17 Apparatus for molding under high pressure

Country Status (3)

Country Link
EP (1) EP0463179A4 (de)
KR (1) KR920700864A (de)
WO (1) WO1991010545A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995003160A1 (de) * 1993-07-22 1995-02-02 Erich Netzsch Gmbh & Co. Holding Kg Giessanlage und verfahren zum druckgiessen keramischer gussstücke
WO1998033633A1 (en) * 1997-02-04 1998-08-06 British Ceramic Research Limited Ware forming
WO2002094524A1 (en) * 2001-05-21 2002-11-28 Sacmi Cooperativa Meccanici Imola A process for the functional regeneration of the porosity of moulds used for moulding ceramic objects
EP1424177A2 (de) * 2002-11-29 2004-06-02 Maschinen- und Stahlbau Julius Lippert GmbH & Co. KG Verfahren und Vorrichtung zur Herstellung von Keramikgegenständen wie Tassen, Becher o. dgl.
WO2009106061A2 (de) * 2008-02-29 2009-09-03 Dorst Technologies Gmbh & Co. Kg Druckschlicker-giessvorrichtung bzw. verfahren zum giessen eines formteils
WO2019073170A1 (fr) 2017-10-12 2019-04-18 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif et procédé de fabrication de pièces en céramique par voie cryogénique
DE102020216179A1 (de) 2020-04-01 2021-10-07 Lotte Schlör Gussform und Verfahren zur Herstellung eines Gussprodukts

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107571373A (zh) * 2017-08-16 2018-01-12 武汉工程大学 一种高效率的陶瓷浆料除泡方法
CN114147838B (zh) * 2021-11-25 2023-06-27 内蒙古中建亚太建材科技有限公司 一种硅酸钙保温材料生产成型装置

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US2485857A (en) * 1945-02-23 1949-10-25 Taylor Smith & Taylor Company Method of and apparatus for deairing slips
US2570835A (en) * 1949-04-28 1951-10-09 Owens Illinois Glass Co Deaerating and dispensing slurry
US3010176A (en) * 1956-05-17 1961-11-28 Ram Inc Method of molding ceramic ware
GB1295056A (de) * 1970-03-17 1972-11-01
DE2335392A1 (de) * 1973-07-12 1975-01-30 Will Guenther Dr Verfahren und vorrichtung zur abformung feinteiliger feststoffe in waessriger suspension durch druckfiltration in geformten filtern
EP0194757A2 (de) * 1985-02-13 1986-09-17 Inax Corporation Herstellung eines porösen Harzgegenstandes und Giessform aus porösem Harz
JPS63160802A (ja) * 1986-12-24 1988-07-04 トヨタ自動車株式会社 鋳込み成形用石膏型の吸水力劣化防止方法
DD266998A1 (de) * 1987-12-22 1989-04-19 Bauakademie D. Ddr Institut Fuer Technologie Und Mechanisierung,Dd Anordnung zur behandlung der oberflaechen von schalungsformen
EP0316541A1 (de) * 1987-11-13 1989-05-24 Nkk Corporation Verfahren und Vorrichtung zum Giessen von Pulver in einen Formkörper
EP0396766A1 (de) * 1988-10-06 1990-11-14 Kawasaki Steel Corporation Schlicker-giessform

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JPS591207A (ja) * 1982-05-31 1984-01-06 日立金属株式会社 ホツトプレス用黒鉛型
JPS62244603A (ja) * 1986-04-17 1987-10-26 キヤタラ−工業株式会社 泥漿鋳込み成形型
JPH0591207A (ja) * 1991-09-26 1993-04-09 Canon Inc 通信端末装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485857A (en) * 1945-02-23 1949-10-25 Taylor Smith & Taylor Company Method of and apparatus for deairing slips
US2570835A (en) * 1949-04-28 1951-10-09 Owens Illinois Glass Co Deaerating and dispensing slurry
US3010176A (en) * 1956-05-17 1961-11-28 Ram Inc Method of molding ceramic ware
GB1295056A (de) * 1970-03-17 1972-11-01
DE2335392A1 (de) * 1973-07-12 1975-01-30 Will Guenther Dr Verfahren und vorrichtung zur abformung feinteiliger feststoffe in waessriger suspension durch druckfiltration in geformten filtern
EP0194757A2 (de) * 1985-02-13 1986-09-17 Inax Corporation Herstellung eines porösen Harzgegenstandes und Giessform aus porösem Harz
JPS63160802A (ja) * 1986-12-24 1988-07-04 トヨタ自動車株式会社 鋳込み成形用石膏型の吸水力劣化防止方法
EP0316541A1 (de) * 1987-11-13 1989-05-24 Nkk Corporation Verfahren und Vorrichtung zum Giessen von Pulver in einen Formkörper
DD266998A1 (de) * 1987-12-22 1989-04-19 Bauakademie D. Ddr Institut Fuer Technologie Und Mechanisierung,Dd Anordnung zur behandlung der oberflaechen von schalungsformen
EP0396766A1 (de) * 1988-10-06 1990-11-14 Kawasaki Steel Corporation Schlicker-giessform

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* Cited by examiner, † Cited by third party
Title
DERWENT JAPANESE PATENT REPORT, accession no. 88-225002 [32], Derwent Publications Ltd, London, GB; & JP-A-63 160 802 (TOYOTA JIDOSHA K.K.) 04-07-1988 *
See also references of WO9110545A1 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995003160A1 (de) * 1993-07-22 1995-02-02 Erich Netzsch Gmbh & Co. Holding Kg Giessanlage und verfahren zum druckgiessen keramischer gussstücke
WO1998033633A1 (en) * 1997-02-04 1998-08-06 British Ceramic Research Limited Ware forming
US7763193B2 (en) 2001-05-21 2010-07-27 Sacmi Cooperativa Meccanici Imola Societa Cooperativa Process for the functional regeneration of the porosity of moulds used for moulding ceramic objects
WO2002094524A1 (en) * 2001-05-21 2002-11-28 Sacmi Cooperativa Meccanici Imola A process for the functional regeneration of the porosity of moulds used for moulding ceramic objects
EP1295690A1 (de) * 2001-05-21 2003-03-26 SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. Verfahren für funktionelle Regeneration von der Porösität von Formen zur Herstellung von keramischen Gegenständen
EP1775090A2 (de) 2001-05-21 2007-04-18 SACMI COOPERATIVA MECCANICI IMOLA SOCIETA' COOPERATIVA in breve SACMI IMOLA S.C. Verfahren für funktionelle Regeneration von der Porösität von Formen zur Herstellung von keramischen Gegenständen
US7261847B2 (en) 2001-05-21 2007-08-28 Sacmi Cooperativa Meccanici Imola Societa′ Cooperativa Process for the functional regeneration of the porosity of moulds used for moulding ceramic objects
EP1424177A2 (de) * 2002-11-29 2004-06-02 Maschinen- und Stahlbau Julius Lippert GmbH & Co. KG Verfahren und Vorrichtung zur Herstellung von Keramikgegenständen wie Tassen, Becher o. dgl.
EP1424177A3 (de) * 2002-11-29 2005-09-21 Maschinen- und Stahlbau Julius Lippert GmbH & Co. KG Verfahren und Vorrichtung zur Herstellung von Keramikgegenständen wie Tassen, Becher o. dgl.
WO2009106061A2 (de) * 2008-02-29 2009-09-03 Dorst Technologies Gmbh & Co. Kg Druckschlicker-giessvorrichtung bzw. verfahren zum giessen eines formteils
WO2009106061A3 (de) * 2008-02-29 2010-01-07 Dorst Technologies Gmbh & Co. Kg Druckschlicker-giessvorrichtung bzw. verfahren zum giessen eines formteils
DE102008011820A1 (de) * 2008-02-29 2009-09-03 Dorst Technologies Gmbh & Co. Kg Druckschlicker-Gießvorrichtung bzw. Verfahren zum Gießen eines Formteils
WO2019073170A1 (fr) 2017-10-12 2019-04-18 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif et procédé de fabrication de pièces en céramique par voie cryogénique
DE112018004502T5 (de) 2017-10-12 2020-06-10 Commissariat à l'énergie atomique et aux énergies alternatives Vorrichtung und Verfahren zum kryogenen Herstellen keramischer Teile
DE102020216179A1 (de) 2020-04-01 2021-10-07 Lotte Schlör Gussform und Verfahren zur Herstellung eines Gussprodukts
DE102020216179B4 (de) 2020-04-01 2023-04-20 Lotte Schlör Gussform und Verfahren zur Herstellung eines Gussprodukts, Satz aus Gussprodukten , Mehrstufiger Filter/Sieb sowie Verwendung des mehrstufigen Filters/Siebes

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EP0463179A4 (en) 1992-07-08
WO1991010545A1 (en) 1991-07-25

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