Patents by Inventor Zhong-Zhi Zhang
Zhong-Zhi Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11466349Abstract: A spheroidal graphite cast iron having an excellent impact strength at low temperature and a method for producing the same are provided. The present disclosure relates to the spheroidal graphite cast iron comprising: C: 3.5 mass % to 4.2 mass %; Si: 2.0 mass % to 2.8 mass %; Mn: 0.2 mass % to 0.4 mass %; Cu: 0.1 mass % to 0.7 mass %; Mg: 0.02 mass % to 0.06 mass %; Cr: 0.01 mass % to 0.15 mass %; and the balance: Fe and inevitable impurities, wherein Mn+Cr+Cu is 0.431 mass % to 1.090 mass %, a graphite nodule count is 230/mm2 or less, and a pearlite fraction is 30% to 85%.Type: GrantFiled: December 27, 2018Date of Patent: October 11, 2022Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN TAKAOKA CO., LTD.Inventors: Takumi Hijii, Yoshimasa Ureshino, Hitoshi Sakuma, Gou Nakamura, Zhong-zhi Zhang
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Publication number: 20190211426Abstract: A spheroidal graphite cast iron having an excellent impact strength at low temperature and a method for producing the same are provided. The present disclosure relates to the spheroidal graphite cast iron comprising: C: 3.5 mass % to 4.2 mass %; Si: 2.0 mass % to 2.8 mass %; Mn: 0.2 mass % to 0.4 mass %; Cu: 0.1 mass % to 0.7 mass %; Mg: 0.02 mass % to 0.06 mass %; Cr: 0.01 mass % to 0.15 mass %; and the balance: Fe and inevitable impurities, wherein Mn+Cr+Cu is 0.431 mass % to 1.090 mass %, a graphite nodule count is 230/mm2 or less, and a pearlite fraction is 30% to 85%.Type: ApplicationFiled: December 27, 2018Publication date: July 11, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN TAKAOKA CO., LTD.Inventors: Takumi Hijii, Yoshimasa Ureshino, Hitoshi Sakuma, Gou Nakamura, Zhong-zhi Zhang
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Patent number: 9856961Abstract: In a differential apparatus component (ring gear-integrated with differential case 12), a differential case and a ring gear are formed integrally and seamlessly of cast steel. Cast Steel is preferably composed of 0.3 to 1.0% by mass of silicon (Si), 0.5 to 1.2% by mass of manganese (Mn), 0.1 to 0.5% by mass of vanadium (V), 0.01 to 0.05% by mass of tin (Sn), 0.1 to 1.5% by mass of chromium (Cr), 0.2 to 1.0% by mass of copper (Cu), and the rest composed of iron (Fe) and unavoidable impurities.Type: GrantFiled: October 22, 2014Date of Patent: January 2, 2018Assignee: AISIN TAKAOKA CO., LTD.Inventors: Zhong-zhi Zhang, Huaisheng Dai, Tomohiro Yamaguchi
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Patent number: 9716218Abstract: A manufacturing method of a thermoelectric module comprises forming a first wax model in which the first thermoelectric elements are arranged in a predetermined pattern, forming a first mold from the first wax model, casting a group of the first thermoelectric elements by pouring molten metal of a first thermoelectric material into the first mold to solidify the molten metal, forming a second wax model that represents arrangement of second thermoelectric elements to form the thermoelectric module by being connected with the first thermoelectric elements, forming a second mold from the second wax model, casting the group of the second thermoelectric elements by pouring molten metal of a second thermoelectric material into the second mold to solidify the molten metal, and connecting the group of the first thermoelectric elements with the group of the second thermoelectric elements electrically in series.Type: GrantFiled: November 19, 2013Date of Patent: July 25, 2017Assignee: AISIN TAKAOKA CO., LTD.Inventors: Hitoshi Yoshimi, Kiyohito Kondo, Huai-sheng Dai, Tomiyuki Murayama, Zhong-zhi Zhang, Takeshi Seo
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Publication number: 20160252174Abstract: In a differential apparatus component (ring gear-integrated with differential case 12), a differential case and a ring gear are formed integrally and seamlessly of cast steel. Cast Steel is preferably composed of 0.3 to 1.0% by mass of silicon (Si), 0.5 to 1.2% by mass of manganese (Mn), 0.1 to 0.5% by mass of vanadium (V), 0.01 to 0.05% by mass of tin (Sn), 0.1 to 1.5% by mass of chromium (Cr), 0.2 to 1.0% by mass of copper (Cu), and the rest composed of iron (Fe) and unavoidable impurities.Type: ApplicationFiled: October 22, 2014Publication date: September 1, 2016Applicant: AISIN TAKAOKA CO., LTD.Inventors: Zhong-zhi ZHANG, Huaisheng DAI, Tomohiro YAMAGUCHI
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Publication number: 20150380136Abstract: The iron-based soft magnetic material includes: a parent phase containing iron as a main component; and a grain boundary phase present in a crystal grain boundary of the parent phase, the grain boundary phase containing as a main component a sulfide containing copper.Type: ApplicationFiled: June 30, 2015Publication date: December 31, 2015Applicants: Aisin Seiki Kabushiki Kaisha, Aisin Takaoka Co., Ltd.Inventors: Makoto TSUKAHARA, Mio BAN, Takeshi SEO, Zhong-zhi ZHANG
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Publication number: 20150303366Abstract: A manufacturing method of a thermoelectric module comprises forming a first wax model in which the first thermoelectric elements are arranged in a predetermined pattern, forming a first mold from the first wax model, casting a group of the first thermoelectric elements by pouring molten metal of a first thermoelectric material into the first mold to solidify the molten metal, forming a second wax model that represents arrangement of second thermoelectric elements to form the thermoelectric module by being connected with the first thermoelectric elements, forming a second mold from the second wax model, casting the group of the second thermoelectric elements by pouring molten metal of a second thermoelectric material into the second mold to solidify the molten metal, and connecting the group of the first thermoelectric elements with the group of the second thermoelectric elements electrically in series.Type: ApplicationFiled: November 19, 2013Publication date: October 22, 2015Applicant: AISIN TAKAOKA CO., LTD.Inventors: Hitoshi YOSHIMI, Kiyohito KONDO, Huai-sheng DAI, Tomiyuki MURAYAMA, Zhong-zhi ZHANG, Takeshi SEO
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Patent number: 9163303Abstract: An iron (Fe)-based austenitic heat-resistant cast steel includes, based on a total of 100 mass % (indicated below simply as “%”): 0.4 to 0.8% of carbon (C), 3.0% or less of silicon (Si), 0.5 to 2.0% of manganese (Mn), 0.05% or less of phosphorus (P), 0.03 to 0.2% of sulfur (S), 18 to 23% of chromium (Cr), 3.0 to 8.0% of nickel (Ni) and 0.05 to 0.4% of nitrogen (N). A ratio of chromium (Cr) to carbon (C) is in a range of 22.5?Cr/C?57.5. The cast steel includes one or two or more of vanadium (V), molybdenum (Mo), tungsten (W) and niobium (Nb) in a total amount of less than 0.2%.Type: GrantFiled: April 5, 2011Date of Patent: October 20, 2015Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN TAKAOKA CO., LTD.Inventors: Yoshikazu Genma, Go Kuramoto, Zhong-zhi Zhang
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Patent number: 9095897Abstract: A cast-steel pouring apparatus including a furnace body having a furnace main body that includes a fire-retardant lining material demarcating a retainer chamber for retaining molten steel therein, and a steel-outing trough unit that protrudes from the furnace main-body toward an outside and with a trough length equal to ? or less of an inside diameter of a top-face opening in the retainer chamber; a first pivot shaft having a first axial line oriented along a lateral direction such that the furnace body can pivot on the first pivot shaft in a longitudinal direction; a first pivot driving source for causing the furnace body to pivot about the first axial line of the first pivot shaft which serves as the pivotal center in the longitudinal direction, thereby causing the molten steel to discharge from the steel-outing trough unit of the furnace body, which has pivoted with respect to a sprue of casting mold.Type: GrantFiled: February 22, 2012Date of Patent: August 4, 2015Assignees: AISIN TAKAOKA CO., LTD., SINTOKOGIO, LTD., FUJIWA DENKI CO., LTD.Inventors: Takahiro Sato, Shinichi Cyomatsuken, Zhong-zhi Zhang, Toru Hanai, Hideto Terada, Masayuki Kato, Hidemi Hattori
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Patent number: 8721808Abstract: The ferrite system heat-resistant cast steel and the exhaust system component are provided, which are inexpensive and are able to improve the reliability by largely improving the toughness under normal temperature and thermal fatigue performance. The ferrite system heat-resistant cast steel includes composition structure comprised, percent by mass, of 0.1% to 0.4% carbon, 0.5% to 2.0% silicon, 0.2% to 1.2% manganese, 0.3% or less phosphorus, 0.01% to 0.4% sulfur, 14.0% to 21.0% chrome, 0.05% to 0.6% niobium, 0.01% to 0.8% aluminum, 0.15% to 2.3% nickel, residual iron and inevitable impurities.Type: GrantFiled: February 8, 2010Date of Patent: May 13, 2014Assignee: Aisin Takaoka Co., Ltd.Inventors: Daisuke Yamanaka, Zhong-zhi Zhang
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Publication number: 20140015174Abstract: A cast-steel pouring apparatus is provided, cast-steel pouring apparatus which can contribute to shortening a casting time for casting molten steel of cast steel into a sprue of casting mold. A first axial line of a first pivot shaft is positioned on a more diametrically inner side than is a first imaginary extension line of an outer-circumference wall face in a furnace-body main body, and is positioned on a more diametrically outer side than is a second imaginary extension line of an inner-circumference wall face in a fire-retardant lining material that the furnace-body main body has.Type: ApplicationFiled: February 22, 2012Publication date: January 16, 2014Applicants: AISIN TAKAOKA CO., LTD., FUJIWA DENKI CO., LTD., SINTOKOGIO, LTD.Inventors: Takahiro Sato, Shinichi Cyomatsuken, Zhong-zhi Zhang, Toru Hanai, Hideto Terada, Masayuki Kato, Hidemi Hattori
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Patent number: 8540932Abstract: Ferritic spheroidal graphite cast iron includes: 3.1 to 3.5 percent by mass of carbon; 4.1 to 4.5 percent by mass of silicon; 0.8 percent by mass or below of manganese; 0.1 to 0.6 percent by mass of molybdenum; 0.1 to 1.0 percent by mass of chromium; 0.03 to 0.1 percent by mass of phosphorus; 0.03 percent by mass or below of sulfur; 0.02 to 0.15 percent by mass of magnesium; and iron.Type: GrantFiled: February 19, 2010Date of Patent: September 24, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Takaoka Co., Ltd.Inventors: Yoshikazu Genma, Go Kuramoto, Yoshihiro Hibino, Zhong-zhi Zhang, Takeyuki Sakuma
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Publication number: 20130022488Abstract: An iron (Fe)-based austenitic heat-resistant cast steel includes, based on a total of 100 mass % (indicated below simply as “%”): 0.4 to 0.8% of carbon (C), 3.0% or less of silicon (Si), 0.5 to 2.0% of manganese (Mn), 0.05% or less of phosphorus (P), 0.03 to 0.2% of sulfur (S), 18 to 23% of chromium (Cr), 3.0 to 8.0% of nickel (Ni) and 0.05 to 0.4% of nitrogen (N). A ratio of chromium (Cr) to carbon (C) is in a range of 22.5?Cr/C?57.5. The cast steel includes one or two or more of vanadium (V), molybdenum (Mo), tungsten (W) and niobium (Nb) in a total amount of less than 0.2%.Type: ApplicationFiled: April 5, 2011Publication date: January 24, 2013Applicants: AISIN TAKAOKA CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshikazu Genma, Go Kuramoto, Zhong-zhi Zhang
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Publication number: 20110297280Abstract: Ferritic spheroidal graphite cast iron includes: 3.1 to 3.5 percent by mass of carbon; 4.1 to 4.5 percent by mass of silicon; 0.8 percent by mass or below of manganese; 0.1 to 0.6 percent by mass of molybdenum; 0.1 to 1.0 percent by mass of chromium; 0.03 to 0.1 percent by mass of phosphorus; 0.03 percent by mass or below of sulfur; 0.02 to 0.15 percent by mass of magnesium; and iron.Type: ApplicationFiled: February 19, 2010Publication date: December 8, 2011Inventors: Yoshikazu Genma, Go Kuramoto, Yoshihiro Hibino, Zhong-zhi Zhang, Takeyuki Sakuma
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Publication number: 20110132499Abstract: The ferrite system heat-resistant cast steel and the exhaust system component are provided, which are inexpensive and are able to improve the reliability by largely improving the toughness under normal temperature and thermal fatigue performance. The ferrite system heat-resistant cast steel includes composition structure comprised, percent by mass, of 0.1% to 0.4% carbon, 0.5% to 2.0% silicon, 0.2% to 1.2% manganese, 0.3% or less phosphorus, 0.01% to 0.4% sulfur, 14.0% to 21.0% chrome, 0.05% to 0.6% niobium, 0.01% to 0.8% aluminum, 0.15% to 2.3% nickel, residual iron and inevitable impurities.Type: ApplicationFiled: February 8, 2010Publication date: June 9, 2011Inventors: Daisuke Yamanaka, Zhong-zhi Zhang
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Publication number: 20040091383Abstract: The present invention provides a ferrite-based spheroidal graphite cast iron containing the following elements in the following contents in % by weight: C: 3.1 to 4.0%; Si: 3.6 to 4.6%; Mo: 0.3 to 1.0%; V: 0.1 to 1.0%; Mn: 0.15 to 1.6%; and Mg: 0.02 to 0.10%, and the total content of V and Mn is 0.3 to 2.0 wt %, and an exhaust system component using the spheroidal graphite cast iron. Thus, the ferrite-based spheroidal graphite cast iron having higher heat resistance than that of a conventional high Si spheroidal graphite cast iron that can be produced inexpensively by a simple method.Type: ApplicationFiled: November 8, 2002Publication date: May 13, 2004Applicants: Suzuki Motor Corporation, Aisin Takaoka Co., Ltd.Inventors: Nobuaki Suzuki, Fumitaka Yamao, Toshio Yamauchi, Zhong-Zhi Zhang, Norihiro Akita