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1. 发明专利

JP2004090046A Precision casting method, its cast product and rotary machine 有权
标题翻译：精密铸造方法，铸造产品和旋转机
公开(公告)号：JP2004090046A
公开(公告)日：2004-03-25
申请号：JP2002255551
申请日：2002-08-30
申请人： Ebara Corp , 株式会社荏原製作所
发明人： SAKAMOTO KATSUHIKO , TAKAYAMA HIROKAZU , KUDO SATOSHI , OGAWA TOSHIYUKI
IPC分类号： F04D29/02 , B22C9/04 , B22C9/10 , F04D29/22 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To provide a precision casting method, its casting and a rotary machine with which even in the case of being a cast product having a narrow gap in this inner part, this can easily be cast without using a metallic mold for manufacturing a core.
SOLUTION: This precision casting method is provided with a process, in which a ceramic powder-made core 10 is directly molded from mixed powder of the ceramic powder and organic binder (phenol, silicone resin, etc.), with a powder sintering type three-dimensional quick molding device, a process, in which an inorganization and a hardening treatment is performed by impregnating ethyl silicate and alkoxide into the ceramic powder-made core 10 and burning to obtain the ceramic core 15, a process, in which the ceramic core 15 is combined into a lost pattern (wax-made or lost form resin-made of foaming polystyrene or foaming polyurethane, etc.), 20 and a stuccoing is performed to the surrounding of the lost pattern 20 to form a mold 25, a process, in which the lost pattern 20 is lost, and a process, in which molten metal is poured into the mold 25 to obtain the cast product 100.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供精密铸造方法，其铸造和旋转机器，即使在作为在该内部部分中具有窄间隙的铸造产品的情况下，也可以容易地铸造而不使用金属用于制造核心的模具。解决方案：该精密铸造方法具有如下工艺，其中陶瓷粉末制成的芯10由陶瓷粉末和有机粘合剂（酚，硅树脂等）的混合粉末直接模制成粉末烧结型立体快速成型装置，其中通过将硅酸乙酯和醇盐浸渍到陶瓷粉末制成的芯10中并进行燃烧以获得陶瓷芯15进行无机化和硬化处理的方法，其中将陶瓷芯15组合成失去的图案（由发泡聚苯乙烯或发泡聚氨酯等制成的蜡状或失去树脂的树脂等）20，并且对损失图案20的周围进行灰泥以形成模具25 ，失去图案20的方法，以及将熔融金属倒入模具25中以获得铸件100的方法。（C）2004，JPO

2. 发明专利

JP2004050208A Casting method with lost-foam pattern, cast product and rotary machine 有权
公开(公告)号：JP2004050208A
公开(公告)日：2004-02-19
申请号：JP2002209218
申请日：2002-07-18
申请人： Ebara Corp , 株式会社荏原製作所
发明人： SAKAMOTO KATSUHIKO , TAKAYAMA HIROKAZU , KUDO SATOSHI , OGAWA TOSHIYUKI
IPC分类号： F01D5/04 , B22C3/00 , B22C7/02 , B22C9/04 , B22C9/22 , B22C9/24 , F01D25/24 , F04D29/24 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To provide a casting method with a lost-foam pattern, a cast product and a rotary machine with which a stainless cast steel-made cast product can be produced without generating carburizing and the lost-foam pattern can be manufactured without using a metallic mold.
SOLUTION: This casting method is provided with a process for respectively manufacturing a plurality of slice parts 10-1 to 10-8 formed with one lost-foam pattern 10 by piling up these parts, a process for manufacturing the lost-foam pattern 10 by sticking the respective slice parts 10-1 to 10-8, a process for forming a ceramic mold 20 by drying the pattern 10 after stuccoing the lost-foam pattern 10 with ceramic slurry mixing a refractory in a binder, a process for burning the ceramic mold 20 with the heat-shock and also, melting out the lost-foam pattern 10 from the ceramic mold 20, a process for performing the sand-molding by inserting the ceramic mold 20 into a molding flask 30, a process for pouring molten metal into the inner part of the ceramic mold 20 while reducing the pressure in the inner part of the molding flask 30 and a process for taking out a cast product 37 from the ceramic mold 20.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004090047A Lost pattern for precision casting, manufacturing method for precision casting lost pattern and casting mold, precision cast part and rotary machine using it 审中-公开
公开(公告)号：JP2004090047A
公开(公告)日：2004-03-25
申请号：JP2002255556
申请日：2002-08-30
申请人： Ebara Corp , 株式会社荏原製作所
发明人： TAKAYAMA HIROKAZU , SAKAMOTO KATSUHIKO , KUDO SATOSHI , OGAWA TOSHIYUKI
IPC分类号： F04D29/22 , B22C7/02 , B22C9/04 , B29C33/40 , B29C33/52 , B29L31/08 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To provide a precision casting lost pattern which can manufacture a cast easily at low cost and is easily applicable for production of a large cast product, a manufacturing method for the precision casting lost pattern and casting mold, a precision cast part and a rotary machine using it.
SOLUTION: An elastomer mold 20 whose inside cavity 23 is copied from the lost pattern is prepared, raw materials including a foaming agent is put inside the mold 20 and foamed to transfer the profile of the cavity 23 to the precision casting lost pattern 70 made of a forming material, and then the lost pattern 70 is stripped out of the mold 20 after hardened. A slurry composed of refractory material as an aggregate is applied and dried over the outer periphery of the lost pattern 70, then heated and pressurized by an autoclave while the lost pattern 70 inside is mostly removed. The slurry is further heated and sintered to manufacture the precision casting mold 90 by complete thermal decomposition of the lost pattern 70 inside.
COPYRIGHT: (C)2004,JPO

4. 发明专利

JPH11188455A MOLD MANUFACTURING 失效
公开(公告)号：JPH11188455A
公开(公告)日：1999-07-13
申请号：JP36711397
申请日：1997-12-25
申请人： EBARA CORP
发明人： TAKAYAMA HIROKAZU , OGAWA TOSHIYUKI , SASAKI AKIRA , KUDO SATOSHI
IPC分类号： B22C9/04
摘要： PROBLEM TO BE SOLVED: To manufacture a mold in a limited time by preventing a crack of a shell and shortening a drying time of a mold material being a component of the shell. SOLUTION: Manufacturing method for this mold comprises; forming a sublimation pattern 10, forming a pre casting mold body 35 by spraying an aqueous mold material 30 to the periphery of the sublimation pattern, drying the mold material 30 by irradiating the pre mold body 35 with a micro wave, and deleting the sublimination pattern 10 by treating the pre mold body 35 in an environment of high temperature. A molten silica with an aqueous coloidal silica as a binder is used as the mold material 30.

5. 发明专利

JP2000301289A PRODUCTION OF LOST FORM PATTERN 失效
公开(公告)号：JP2000301289A
公开(公告)日：2000-10-31
申请号：JP11473499
申请日：1999-04-22
申请人： EBARA CORP
发明人： TAKAYAMA HIROKAZU , KUDO SATOSHI , OGAWA TOSHIYUKI , SASAKI AKIRA
IPC分类号： B22C7/02 , B22C7/06 , B22C9/04
摘要： PROBLEM TO BE SOLVED: To easily produce a lost foam pattern for producing a mold for casting an impeller having complicate shape in a short time without causing any burrs. SOLUTION: This method for manufacturing the mold for casting the impeller, in which the blades are arranged among a main plate and side plates, consists of a process for producing a mold 42 for lost foam pattern based on master molds 10, 12, 14 for the whole shape of impeller, a process for producing a mold for forming a lost foam core based on the master mold 10 for core at the portion corresponding to the cavity among the main plate and the side plates, a process for producing a lost foam core by pouring a first lost foam raw material into the mold for forming the lost foam core, a process for producing the lost foam pattern containing the lost foam core by disposing this lost foam core in the mold for lost foam pattern 4 and pouring a second lost foam raw material, and a process for losing the lost foam core with a means, by which only the first lost foam raw material is selectively lost.

6. 发明专利

JP2002160266A METHOD AND APPARATUS FOR MOLDING THREE-DIMENSIONAL SHAPE OF MOLDED ARTICLE 失效
公开(公告)号：JP2002160266A
公开(公告)日：2002-06-04
申请号：JP2000357822
申请日：2000-11-24
申请人： EBARA CORP
发明人： TAKAYAMA HIROKAZU , SAKAMOTO KATSUHIKO , OGAWA TOSHIYUKI , KUDO SATOSHI , SASAKI AKIRA
IPC分类号： B22C7/02 , B29C45/26
摘要： PROBLEM TO BE SOLVED: To provide a method and an apparatus for molding a three-dimensional shape of a molded article, capable of coagulating an injection molding material for a short time even if an elastomer mold is used in the molding of the molded article such as a disappearing model or the like. SOLUTION: The molding apparatus is equipped with the elastomer mold 20 comprising an elastomer material and constituted by forming the negative mold of a three-dimensional master mold as a cavity 23, first and second frames 30 and 40 for holding the periphery of the elastomer mold 20 and a molding material injection device 60 for injection-molding a molten molding material in the cavity of the elastomer mold 20. A filler having heat conductivity higher than that of the elastomer material is mixed with the elastomer material constituting the elastomer mold 20 to enhance the heat conductivity of the elastomer mold 20. A cooling means 35 for cooling the first and second frames 30 and 40 is provided. The heat of the molding material injected in the cavity 23 is discharged to the cooling means 35 from the elastomer mold 20 improved in heat conductivity through the first and second frames 30 and 40.

7. 发明专利

JP2000280358A APPARATUS AND METHOD FOR MANUFACTURE OF THREE- DIMENSIONALLY SHAPED PRODUCT 失效
公开(公告)号：JP2000280358A
公开(公告)日：2000-10-10
申请号：JP9656499
申请日：1999-04-02
申请人： EBARA CORP
发明人： TAKAYAMA HIROKAZU , KUDO SATOSHI , OGAWA TOSHIYUKI , SASAKI AKIRA
IPC分类号： B29C67/00 , B29K105/24 , B29L31/08
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and method for manufacture of a three- dimensionally shaped product capable of manufacturing a shaped product having a smooth three-dimensionally curved surface while a usable material can be diversified. SOLUTION: This apparatus has a material piece processor 10 wherein a slit is formed to a lamellar raw material P, and a material piece P1 of a section shape of an object to be manufactured and an unnecessary part are processed to a state wherein both are connected to each other via a connection part; a connecting apparatus 50 for connecting sequentially the material piece P on an adjoining section; and a separator 52 for cutting off an unnecessary part from the connected material piece.

8. 发明专利

JP2000202575A MANUFACTURE OF MOLD 失效
公开(公告)号：JP2000202575A
公开(公告)日：2000-07-25
申请号：JP526999
申请日：1999-01-12
申请人： EBARA CORP
发明人： TAKAYAMA HIROKAZU , OGAWA TOSHIYUKI , KUDO SATOSHI
IPC分类号： B22C9/04
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a mold, with which the mold for casting an impeller having complicated shape can precisely and effectively be manufactured. SOLUTION: In the method for manufacturing the mold for casting the impeller disposing each of blades between a main board and each of side boards, with which a lost foam pattern 106 having the substantially same shape and dimension as the product, is manufactured and a fireproof raw material-made shell 108 is stuck so as to surround this pattern, and after solidifying the shell, the lost foam pattern is lost and further, the shell is burnt, the lost foam pattern is manufactured by pouring a lost foam raw material into a mold for manufacturing the lost foam pattern assembling an upper mold 12, lower mold 14 and cores 16A forming spaces for the main board and the side boards between the upper mold and the lower mold, and the core is manufactured with an elastomer so as to have the space for blade in the inner part.

9. 发明专利

JP2000005839A FORGING EQUIPMENT 失效
公开(公告)号：JP2000005839A
公开(公告)日：2000-01-11
申请号：JP19240498
申请日：1998-06-23
申请人： EBARA CORP
发明人： TAKAYAMA HIROKAZU , KUDO SATOSHI , OGAWA TOSHIYUKI
IPC分类号： B21D19/00 , B21J5/08 , B21J9/06 , B21K21/12
摘要： PROBLEM TO BE SOLVED: To easily form a flange at the end portion of even a long or large pipe by providing a link mechanism between a press ram and holding members and converting the descending motion of the press ram into a sliding motion on a base of each holding member. SOLUTION: When a pair of pressure plates 20a and 20b approach each other by moving toward the center of a slide base 16, a cylinder portion 42 of the second die 30b gets into the tip of a pipe work W and the diameter of the end of the pipe W is enlarged by means of its taper. When the pressure plates 20a and 20b further approach each other, they are expanded/deformed in the right-angle direction along the space partitioned by both flanges 36 and 44 of dies 30a and 30b due to the horizontal load applied to a pair of the dies 30a and 30b, and a flange F is formed. Therefore, the flange F is formed at the end of the pipe W with the dies 30a and 30b by converting the downward motion of the press ram 10 of the press machine into the horizontal movement of the pair of the pressure plates 20a and 20b.

10. 发明专利

JP2002066689A MOLD MANUFACTURING METHOD 失效
公开(公告)号：JP2002066689A
公开(公告)日：2002-03-05
申请号：JP2000256285
申请日：2000-08-25
申请人： EBARA CORP
发明人： TAKAYAMA HIROKAZU , OGAWA TOSHIYUKI , KUDO SATOSHI
IPC分类号： B22C9/04
摘要： PROBLEM TO BE SOLVED: To manufacture a mold with excellent accuracy and effectively by using a model made of a resin relatively easy for handling. SOLUTION: The model mainly composed of plastics soluble into a solvent is formed. The model is embedded in the mold by an investment method or a ceramic molding method, the model is immersed in the solvent, and the model is partly dissolved or softened to form a gap between the model and the mold. Then the mold and the model are baked in the high temperature to dissipate the model.

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