Patents Assigned to Nippon Yakin Kogyo Co., Ltd.
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Publication number: 20140332117Abstract: High-Mn austenitic stainless steels having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.0028 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass % with the balance being Fe and inevitable impurities, provided that these components are contained so that ? cal represented by the following equation is not more than 5.5%: ? cal (mass %)=(Cr+0.48Si)?(Ni+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7, wherein each element symbol in the equation is a content of the respective element (mass %), and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.Type: ApplicationFiled: February 21, 2014Publication date: November 13, 2014Applicant: NIPPON YAKIN KOGYO CO., LTD.Inventors: Shigeru HIRATA, Yuji IKEGAMI, Kazuhiro YAMAKAWA
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Publication number: 20140205486Abstract: A boron-containing stainless steel having excellent hot workability and weldability and a good surface quality is proposed and is a boron-containing stainless steel comprising C: 0.001˜0.15 mass %, Si: 0.1˜2 mass %, Mn: 0.1˜2 mass %, Ni: 5˜25 mass %, Cr: 11˜27 mass %, B: 0.05˜2.5 mass %, Al: 0.005˜0.2 mass %, O: 0.0001˜0.01 mass %, N: 0.001˜0.1 mass %, S: not more than 0.005 mass %, one or both of Mg: 0.0001˜0.005 mass % and Ca: 0.0001˜0.005 mass % and the remainder being Fe and inevitable impurities provided that a part of Si, Al, Mg, Ca and S is included as a non-metallic inclusion made of sulfide and/or oxysulfide.Type: ApplicationFiled: August 22, 2011Publication date: July 24, 2014Applicant: NIPPON YAKIN KOGYO CO., LTD.Inventor: Hidekazu Todoroki
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Publication number: 20140166158Abstract: High-Mn austenitic stainless steels having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.0028 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass % with the balance being Fe and inevitable impurities, provided that these components are contained so that ? cal represented by the following equation is not more than 5.5%: ? cal (mass %)=(Cr+0.48Si)?(Ni+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7, wherein each element symbol in the equation is a content of the respective element (mass %), and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.Type: ApplicationFiled: February 21, 2014Publication date: June 19, 2014Applicant: NIPPON YAKIN KOGYO CO., LTD.Inventors: Shigeru HIRATA, Yuji IKEGAMI, Kazuhiro YAMAKAWA
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Patent number: 8703047Abstract: As a stainless steel for a metal part for clothing ornament capable of working into a complicated form part and having such nonmagnetic properties that the worked part can cope with the detection through needle detecting device is provided a high-Mn austenitic stainless steel having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.03 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass %, provided that these components are contained so that ? cal (mass %) represented by the following equation (1) is not more than 5.5 mass %: ? cal (mass %)=(Cr+0.48Si+1.21Mo+2.2(V+Ti)+0.15Nb)?(Ni+0.47Cu+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7??(1) and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.Type: GrantFiled: February 26, 2010Date of Patent: April 22, 2014Assignee: Nippon Yakin Kogyo Co., Ltd.Inventors: Shigeru Hirata, Yuji Ikegami, Kazuhiro Yamakawa
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Publication number: 20130309124Abstract: An austenitic Fe—Ni—Cr alloy comprises C: 0.005˜0.03 mass %, Si: 0.15˜1.0 mass %, Mn: not more than 2.0 mass %, P: not more than 0.030 mass %, S: not more than 0.002 mass %, Cr: 18˜28 mass %, Ni: 20˜38 mass %, Mo: 0.10˜3 mass %, Co: 0.05˜2.0 mass %, Cu: less than 0.25 mass %, N: not more than 0.02 mass %, provided that PRE=Cr+3.3×Mo+16×N?20.0 and PREH=411?13.2×Cr?5.8×Mo+0.1×Mo2+1.2×Cu?145.0 (wherein each element symbol represents a content (mass %) of each element) and has an excellent corrosion resistance in air or under a wet environment even at a surface state having an oxide film formed by a intermediate heat treatment on the way of the production process.Type: ApplicationFiled: April 22, 2013Publication date: November 21, 2013Applicant: NIPPON YAKIN KOGYO CO., LTD.Inventors: Kazuhiro YAMAKAWA, Shigeru HIRATA, Kun WANG
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Publication number: 20110286879Abstract: As a stainless steel for a metal part for clothing ornament capable of working into a complicated form part and having such nonmagnetic properties that the worked part can cope with the detection through needle detecting device is provided a high-Mn austenitic stainless steel having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.03 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass %, provided that these components are contained so that ? cal (mass %) represented by the following equation (1) is not more than 5.5 mass %: ? cal (mass %)=(Cr+0.48Si+1.21Mo+2.2(V+Ti)+0.15Nb)?(Ni+0.47Cu+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7??(1) and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.Type: ApplicationFiled: February 26, 2010Publication date: November 24, 2011Applicant: NIPPON YAKIN KOGYO CO., LTD.Inventors: Shigeru Hirata, Yuji Ikegami, Kazuhiro Yamakawa
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Patent number: 7515395Abstract: There is provided a casing material for a storage cell having sufficient corrosion resistance and strength even under a charging environment of a high voltage exceeding 2.8 V. This casing material for the storage cell comprises C: not more than 0.03 mass %, Si: 0.01-0.50 mass %, Mn: not more than 0.20 mass %, P: not more than 0.04 mass %, S: not more than 0.0010 mass %, Ni: 20.0-40.0 mass %, Cr: 20.0-30.0 mass %, Mo: 5.0-10.0 mass %, Al: 0.001-0.10 mass %, N: 0.10-0.50 mass %, Ca: not more than 0.001 mass %, Mg: 0.0001-0.0050 mass %, 0: not more than 0.005 mass %, provided that contents of Cr, Mo and N satisfy Cr+3.3×Mo+20×N?43, and the balance being substantially Fe and inevitable impurities, in which a content of CaO as an oxide inclusion in steel is not more than 20 mass %.Type: GrantFiled: December 15, 2004Date of Patent: April 7, 2009Assignees: Panasonic Corporation, Nippon Yakin Kogyo Co., Ltd.Inventors: Koichi Morikawa, Masashige Ashizaki, Eri Hirose, Yutaka Kobayashi
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Patent number: 7435307Abstract: A Fe—Ni based permalloy comprises Ni: 30-85 wt %, C: not more than 0.015 wt %, Si: not more than 1.0 wt %, Nin: not more than 1.0 wt %, P: not more than 0.01 wt %, S: not more than 0.005 wt %, O: not more than 0.0060 wt %, Al: not more than 0.02 wt % and, if necessary, not more than 15 wt % of at least one selected from the group consisting of Mo, Cu, Co and Nb within a range of not more than 20 wt % in total.Type: GrantFiled: July 20, 2005Date of Patent: October 14, 2008Assignee: Nippon Yakin Kogyo Co., LtdInventors: Tatsuya Itoh, Tsutomu Omori
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Patent number: 7419634Abstract: A Fe—Ni based permalloy comprises Ni: 30-85 wt %, C: not more than 0.015 wt %, Si: not more than 1.0 wt %, Mn: not more than 1.0 wt %, P: not more than 0.01 wt %, S: not more than 0.005 wt %, O: not more than 0.0060 wt %, Al: not more than 0.02 wt % and, if necessary, not more than 15 wt % of at least one selected from the group consisting of Mo, Cu, Co and Nb within a range of not more than 20 wt % in total.Type: GrantFiled: October 10, 2006Date of Patent: September 2, 2008Assignee: Nippon Yakin Kogyo Co., Ltd.Inventors: Tatsuya Itoh, Tsutomu Omori
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Publication number: 20070089809Abstract: A Fe—Ni based permalloy comprises Ni: 30-85 wt %, C: not more than 0.015 wt %, Si: not more than 1.0 wt %, Mn: not more than 1.0 wt %, P: not more than 0.01 wt %, S: not more than 0.005 wt %, O: not more than 0060 wt %, Al: not more than 0.02 wt % and, if necessary, not more than 15 wt % of at least one selected from the group consisting of Mo, Cu, Co and Nb within a range of not more than 20 wt % in total.Type: ApplicationFiled: October 10, 2006Publication date: April 26, 2007Applicant: Nippon Yakin Kogyo Co., LtdInventors: Tatsuya Itoh, Tsutomu Omori
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Patent number: 7014721Abstract: The invention is a Fe—Ni alloy material comprising Ni: 26–37 wt %, Si: 0.001–0.2 wt %, Mn: 0.01–0.6 wt %, Al: 0.0001–0.003 wt %, Mg: not more than 0.001 wt %, Ca: not more than 0.001 wt % and the reminder being Fe and inevitable impurities, and containing not more than 0.02 wt % of one or more MnO—SiO2—Al2O3 inclusion, SiO2 inclusion and MgO—Al2O3 inclusion insoluble in an aqueous solution of ferric chloride, and is to provide electronic materials for shadow mask and the like having a good hole shape in an etching treatment and a high quality.Type: GrantFiled: November 20, 2001Date of Patent: March 21, 2006Assignee: Nippon Yakin Kogyo Co., Ltd.Inventors: Natsuki Shiga, Hidekazu Todoroki
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Publication number: 20050252577Abstract: A Fe—Ni based permalloy comprises Ni: 30-85 wt %, C: not more than 0.015 wt %, Si: not more than 1.0 wt %, Nin: not more than 1.0 wt %, P: not more than 0.01 wt %, S: not more than 0.005 wt %, O: not more than 0.0060 wt %, Al: not more than 0.02 wt % and, if necessary, not more than 15 wt % of at least one selected from the group consisting of Mo, Cu, Co and Nb within a range of not more than 20 wt % in total.Type: ApplicationFiled: July 20, 2005Publication date: November 17, 2005Applicant: Nippon Yakin Kogyo Co., Ltd.Inventors: Tatsuya Itoh, Tsutomu Omori
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Patent number: 6656419Abstract: A Fe—Ni based permalloy comprises Ni: 30-85 wt %, C: not more than 0.015 wt %, Si: not more than 1.0 wt %, Mn: not more than 1.0 wt %, P: not more than 0.01 wt %, S: not more than 0.005 wt %, O: not more than 0.0060 wt %, Al: not more than 0.02 wt % and, if necessary, not more than 15 wt % of at least one selected from the group consisting of Mo, Cu, Co and Nb within a range of not more than 20 wt % in total.Type: GrantFiled: September 25, 2001Date of Patent: December 2, 2003Assignee: Nippon Yakin Kogyo Co., Ltd.Inventors: Tatsuya Itoh, Tsutomu Omori
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Publication number: 20030205296Abstract: A Fe—Ni based permalloy comprises Ni: 30-85 wt %, C: not more than 0.015 wt %, Si: not more than 1.0 wt %, Mn: not more than 1.0 wt %, P: not more than 0.01 wt %, S: not more than 0.005 wt %, O: not more than 0.0060 wt %, Al: not more than 0.02 wt % and, if necessary, not more than 15 wt % of at least one selected from the group consisting of Mo, Cu, Co and Nb within a range of not more than 20 wt % in total.Type: ApplicationFiled: April 29, 2003Publication date: November 6, 2003Applicant: Nippon Yakin Kogyo Co., Ltd.Inventors: Tatsuya Itoh, Tsutomu Omori
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Patent number: 6632298Abstract: The present invention aims at providing a sophisticated segregation reducing technique which a conventional technique cannot achieve by finding the relationship between the casting structure and the segregation of components at the time of solidification and the heat treatment conditions. That is, the present invention aims at providing material for shadow masks which exhibits excellent quality with respect to streaks. A material for a shadow mask of the present invention is formed of a casting slab for preparing the shadow mask which comprises an Ni—Fe alloy containing 30 to 45% of Ni. The casting slab has a cast structure comprising a columnar crystal and/or a chill crystal in an amount of 99% or more. In particular, it is preferred that the casting slab contains no equiaxed crystal.Type: GrantFiled: February 26, 2002Date of Patent: October 14, 2003Assignees: Toyo Kohan Co., Ltd., Nippon Yakin Kogyo Co., Ltd.Inventors: Syun-ichi Morita, Taizo Sato, Jun Agari, Tsutomu Omori, Tatsuya Itoh, Shigeru Hirata
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Patent number: 6547893Abstract: It is a Fe—Ni based shadow mask material of Fe—Ni alloy or Fe—Ni—Co alloy used as a material for a color television cathode tube or the like, and relates to a material wherein the material has a texture that an X-ray intensity ratio Ir of cubic orientation (100)<001> to twinning orientation (221)<212> thereof in a (111) pole figure is a range of 0.5-5:1 and segregation of Ni, Mn or the like is less, and a section cleanness defined according to JIS G0555 is made to be not more than 0.05% to reduce the occurrence of streak or mottling in the etching.Type: GrantFiled: December 4, 2001Date of Patent: April 15, 2003Assignee: Nippon Yakin Kogyo Co., Ltd.Inventors: Tatsuya Itoh, Tsutomu Omori
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Publication number: 20020068007Abstract: A Fe—Ni based permalloy comprises Ni: 30-85 wt %, C: not more than 0.015 wt %, Si: not more than 1.0 wt %, Mn: not more than 1.0 wt %, P: not more than 0.01 wt %, S: not more than 0.005 wt %, O: not more than 0.0060 wt %, Al: not more than 0.02 wt % and, if necessary, not more than 15 wt % of at least one selected from the group consisting of Mo, Cu, Co and Nb within a range of not more than 20 wt % in total.Type: ApplicationFiled: September 25, 2001Publication date: June 6, 2002Applicant: Nippon Yakin Kogyo Co., Ltd.Inventors: Tatsuya Itoh, Tsutomu Omori
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Patent number: 5858129Abstract: Disclosed is an austenite stainless steel comprising: no more than 0.05% by weight of C; no more than 0.25% by weight of Si; no more than 0.40% by weight of Mn; no more than 0.040% by weight of P; no more than 0.003% by weight of S; 30.0 to 40.0% by weight of Ni; 20.0 to 26.0% by weight of Cr; 5.0 to 8.0% by weight of Mo; no more than 0.1% by weight of Al; 0.001 to 0.010% by weight of B; 0.15 to 0.30% by weight of N; and balance of Fe and inevitable impurity. The austenite stainless steel satisfying formula (1) and (2) mentioned below (wherein "Cr", "Mo", "N", "Si" and "Mn" mean content of each element).Cr+3.3Mo+20N.gtoreq.Type: GrantFiled: July 30, 1997Date of Patent: January 12, 1999Assignee: Nippon Yakin Kogyo Co., Ltd.Inventors: Yutaka Kobayashi, Takeya Toge, Yoshito Fujiwara
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Patent number: 5745971Abstract: A method of manufacturing a pulp molding die, by providing a superplastic material plate having a plurality of preformed through-holes, closing the plurality of preformed through-holes, heating the superplastic material plate under a pressurized atmosphere, forming the plate into a desired shape, and uncovering the plurality of preformed through-holes of the plate, thereby forming the pulp molding die.Type: GrantFiled: April 8, 1996Date of Patent: May 5, 1998Assignees: Nippon Paper Industries Co., Ltd., Nippon Yakin Kogyo Co., Ltd.Inventors: Okimasa Ohsawa, Kuniaki Osada, Nobuyoshi Okato, Tatsuo Katagiri
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Patent number: 5686044Abstract: An austenitic stainless steel for press forming has considerably excellent deep drawability and bulging property as compared with those of the conventional one, which comprises C: 0.01-0.10 wt %, Si: not more than 1.0 wt %, Mn: not more than 3.0 wt %, Ni: 6.0-10.0 wt %, Cr: 15.0-19.0 wt %, Cu: 1.0-4.0 wt %, Al: 0.2-2.5 wt %, N: not more than 0.05 wt %, and if necessary, Mo: 0.03-3.0 wt % and B: 0.0010-0.020 wt %, and is adjusted to satisfy anyone of Ni equivalent: 21.0-23.0, crystal grain size number (N) of not less than 8, cleanness of 0.020%, low Si content and (C+N) amount .gtoreq.0.04.Type: GrantFiled: March 25, 1996Date of Patent: November 11, 1997Assignee: Nippon Yakin Kogyo Co., Ltd.Inventors: Yuji Ikegami, Qinzhong Zhang