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公开(公告)号：US20250058373A1
公开(公告)日：2025-02-20
申请号：US18784997
申请日：2024-07-26
Applicant: SINTOKOGIO, LTD.
Inventor： Kazuyuki NISHIKAWA , Yusuke Kato , Tomohiro Aoki , Toshihiko Zenpo , Tetsuji Matsui
IPC: B22C1/18 , B22C1/02 , C04B14/04 , C04B28/00 , C04B103/63 , C04B111/28
Abstract: There is provided a binder for molding a casting mold, which contains water glass and aluminum silicate obtained by carrying out dissolution in the water glass, where the binder for molding a casting mold contains 2 to 15 parts by mass of the aluminum silicate with respect to 100 parts by mass of a solid content of the water glass.
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公开(公告)号：US20140284015A1
公开(公告)日：2014-09-25
申请号：US14360577
申请日：2012-11-27
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , SINTOKOGIO, LTD.
Inventor： Masaomi Mitsutake , Hirotsune Watanabe , Tomokazu Suda , Yusuke Kato , Toshihiko Zenpo
Abstract: By mixing, stirring and kneading, with water glass (11) as a binder, sand (7), a surfactant (9), and water (10), foamed sand (S) is generated. The foamed sand (S) is packed in a cavity of a metallic mold and solidified to form a sand mold. By using the sand mold, aluminum is cast. By using water glass that is an inorganic binder, during casting, harmful gas and odor are not generated. Further, when a molar ratio n of water glass (Na20 nSiO2 mH2O) is adjusted in the range of 0.65 to 1.30, a quantity of water (H2O) generated by heating water glass with a high temperature melt during casting can be suppressed. Thereby, hydrogen gas (H2) according to a reaction between water (H2O) and aluminum (Al) can be suppressed from being generated and casting quality can be improved.
Abstract translation: 通过混合，搅拌和捏合作为粘合剂的水玻璃（11），产生砂（7），表面活性剂（9）和水（10），发泡砂（S）。 将发泡砂（S）包装在金属模具的空腔中并固化以形成砂模。 通过使用砂模，铸铝。 通过使用无机粘合剂的水玻璃，在铸造时不会产生有害气体和气味。 此外，当水玻璃（Na 2 O nSiO 2·mH 2 O）的摩尔比n调节在0.65〜1.30的范围内时，可以抑制通过在浇铸时用高温熔体加热水玻璃而产生的水（H 2 O）的量。 由此，能够抑制水（H 2 O）与铝（Al）的反应的氢气（H 2）的产生，能够提高铸造品质。
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公开(公告)号：US10668524B2
公开(公告)日：2020-06-02
申请号：US16089497
申请日：2017-02-14
Applicant: SINTOKOGIO, LTD.
Inventor： Tomohiro Aoki , Yusuke Kato
Abstract: To provide a binder composition for molding, by which a mold made of aggregate has an excellent resistance to moisture. The binder composition for molding contains a water-soluble binder and at least one kind of lithium salt that is selected from a group of lithium silicate, lithium oxide, lithium hydroxide, lithium carbonate, lithium bromide, lithium chloride, lithium nitrate, and lithium nitrite.
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公开(公告)号：US10035181B2
公开(公告)日：2018-07-31
申请号：US14384312
申请日：2013-04-12
Applicant: SINTOKOGIO, LTD.
Inventor： Yusuke Kato , Toshihiko Zenpo , Tomohiro Aoki , Takehiko Matsumoto , Takumi Maegawa , Hirotsune Watanabe , Tomokazu Suda , Masaomi Mitsutake , Hisao Nakane
CPC classification number: B22C5/185 , B08B3/044 , B08B3/045 , B08B3/10 , B08B7/02 , B22C5/02 , B22C5/04 , B22C5/0413 , B22C5/0427 , B22C5/0454
Abstract: To provide an apparatus for reclaiming foundry sand and a method for reclaiming foundry sand that can effectively remove binders and so on that attach to returned foundry sand that has been used. Foundry sand that has been used is supplied from a chute for feeding sand 14A to a rotor 16. The rotor 16 is rotated by a driver 20 so that frictional force is generated on the sand in the rotor 16. Then, the sand in the rotor 16 is dropped into the container for washing with water 30 that is located below the rotor 16. In the container for washing with water 30, an agitator 34 is rotated by the driver 20 so that the sand in the container for washing with water 30 is agitated and washed with water.
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公开(公告)号：US20210001392A1
公开(公告)日：2021-01-07
申请号：US16981359
申请日：2019-03-20
Applicant: Sintokogio, Ltd. , Tetra Co., Ltd.
Inventor： Tomohiro Aoki , Yusuke Kato , Hiroyuki Matsubara
Abstract: An aggregate mixture for a mold, the aggregate mixture including an aggregate, a water-soluble binder, a water-soluble foaming agent, an aqueous mold release agent, and water.
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Patent Agency Ranking
公开(公告)号：US10730101B2
公开(公告)日：2020-08-04
申请号：US15770918
申请日：2016-10-25
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , SINTOKOGIO, LTD.
Inventor： Takumi Maegawa , Masashi Morikawa , Kenichiro Mori , Yusuke Kato
Abstract: Provided is a method of producing foamed sand (s) for forming a sand mold. The foamed sand (s) includes sand particles (p) and foam (f) adhering to surfaces of the sand particles (p). The foam (f) contains water glass (b), water (w), and a surfactant (c). According to the method, an aqueous surfactant solution (e) in which the surfactant (c) is dissolved is frothed to generate froth (d) from the aqueous surfactant solution (e). Then, the generated froth (d), the water glass (b), and the water (w) are kneaded with the sand constituted by the sand particles (p).
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7.发明授权公开(公告)号：US09789533B2
公开(公告)日：2017-10-17
申请号：US14442233
申请日：2013-11-08
Applicant: SINTOKOGIO, LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tomohiro Aoki , Yusuke Kato , Takehiko Matsumoto , Kenichiro Mori , Toshihiko Zenpo , Tomokazu Suda , Masaomi Mitsutake , Takumi Maegawa , So Nakayama , Masashi Morikawa , Hirotsune Watanabe
Abstract: Sand for a casting mold including sand, a binder, and an inorganic compound particle having poor water solubility and generating a gas, which is at least one of water vapor or carbon dioxide gas, by heat from a molten metal.
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公开(公告)号：US12157162B2
公开(公告)日：2024-12-03
申请号：US17761478
申请日：2020-06-08
Applicant: TAKEMOTO YUSHI KABUSHIKI KAISHA , SINTOKOGIO, LTD.
Inventor： Yusuke Kato , Tomohiro Aoki , Shumma Sato
Abstract: The additive composition of the present invention is one blended in a sand composition which is subjected to foaming to mold a sand mold, and includes (A) an alkylsulfonate metal salt having an alkyl group with 9 to 22 carbon atoms. The additive composition may further include at least one component selected from a group consisting of (B) an alkylsulfate metal salt, (C) a polyoxyalkylene alkyl ether sulfate metal salt, and (D) an alkylbenzene sulfonate metal salt.
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公开(公告)号：US11554411B2
公开(公告)日：2023-01-17
申请号：US16607455
申请日：2018-03-05
Applicant: Sintokogio, Ltd.
Inventor： Yusuke Kato , Tomohiro Aoki
Abstract: A casting mold making apparatus and a method employing a tank with a pour hole formed at a bottom wall of the tank and an opening section open toward the opposite side to a bottom wall side. A first process of the method includes stirring component materials inside the tank with a stirring impeller so as to make a foam mixture while an opening section side of the tank is closed and the pour hole is closed. The second process is performed after the first process and includes opening the pour hole, pressing the tank against a mold such that a fill hole formed so as to pass into the mold is disposed adjacent to the pour hole, and supplying compressed air into the tank while stirring the foam mixture inside the tank with the stirring impeller so as to fill the foam mixture into a cavity of the mold.
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公开(公告)号：US20210276076A1
公开(公告)日：2021-09-09
申请号：US16607455
申请日：2018-03-05
Applicant: Sintokogio, Ltd.
Inventor： Yusuke Kato , Tomohiro Aoki
Abstract: A casting mold making apparatus and a method employing a tank with a pour hole formed at a bottom wall of the tank and an opening section open toward the opposite side to a bottom wall side. A first process of the method includes stirring component materials inside the tank with a stirring impeller so as to make a foam mixture while an opening section side of the tank is closed and the pour hole is closed. The second process is performed after the first process and includes opening the pour hole, pressing the tank against a mold such that a fill hole formed so as to pass into the mold is disposed adjacent to the pour hole, and supplying compressed air into the tank while stirring the foam mixture inside the tank with the stirring impeller so as to fill the foam mixture into a cavity of the mold.
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