公开(公告)号：US08465604B2

公开(公告)日：2013-06-18

申请号：US11918375

申请日：2006-07-31

Applicant: Kazuhide Ishii ,  Tomohiro Ishii ,  Osamu Furukimi

Inventor： Kazuhide Ishii ,  Tomohiro Ishii ,  Osamu Furukimi

IPC: C21D8/00 ,  C22C38/20

CPC classification number: C21D9/46 ,  C21D6/002 ,  C21D8/0205 ,  C21D9/48 ,  C21D2211/005 ,  C22C38/20 ,  C22C38/28

Abstract: A ferritic stainless steel sheet having excellent corrosion resistance and a method of manufacturing the steel sheet are provided. Specifically, the ferritic stainless steel sheet of the invention contains C of 0.03% or less, Si of 1.0% or less, Mn of 0.5% or less, P of 0.04% or less, S of 0.02% or less, Al of 0.1% or less, Cr of 20.5% to 22.5%, Cu of 0.3% to 0.8%, Ni of 1.0% or less, Ti of 4×(C %+N %) to 0.35%, Nb of less than 0.01%, N of 0.03% or less, and C+N of 0.05% or less, and has the remainder including Fe and inevitable impurities, wherein 240+35×(Cr %−20.5)+280×{Ti %−4×(C %+N %)}≧280 is satisfied.

Abstract translation: 提供具有优异的耐腐蚀性的铁素体不锈钢板和钢板的制造方法。 具体地说，本发明的铁素体系不锈钢板含有C为0.03％以下，Si为1.0％以下，Mn为0.5％以下，P为0.04％以下，S为0.02％以下，Al为0.1％ 以下的Cr为20.5〜22.5％，Cu为0.3〜0.8％，Ni为1.0％以下，Ti为4×（C％+ N％）〜0.35％，Nb小于0.01％ 0.03％以下，C + N为0.05％以下，其余为Fe和不可避免的杂质，其中240 + 35×（Cr％-20.5）+ 280×{Ti％-4×（C％+ N ％）}> = 280。

公开(公告)号：US08357247B2

公开(公告)日：2013-01-22

申请号：US10546248

申请日：2004-04-23

Applicant: Junichiro Hirasawa ,  Yoshihiro Ozaki ,  Takumi Ujiro ,  Osamu Furukimi

Inventor： Junichiro Hirasawa ,  Yoshihiro Ozaki ,  Takumi Ujiro ,  Osamu Furukimi

IPC: C22C38/18 ,  H01F1/00

CPC classification number: F16D65/125 ,  C22C38/001 ,  C22C38/42 ,  C22C38/48 ,  F16D2069/004 ,  F16D2200/0017 ,  F16D2200/0021 ,  F16D2250/0007

Abstract: A martensitic stainless steel, having high temper softening resistance, for disc brakes is provided. The martensitic stainless steel is not seriously softened by maintaining the steel at more than 600° C. The steel has a hardness of 32 or more or a hardness of 30 or more in HRC after the steel is tempered at 650° C. for one hour or tempered at 670° C. for one hour, respectively. In particular, the martensitic stainless steel for disc brakes contains less than 0.050 mass % carbon, 1.0 mass % or less silicon, 2.0 mass % or less manganese, 0.04 mass % or less phosphorus, 0.010 mass % or less sulfur, 0.2 mass % or less aluminum, more than 11.5 mass % to 15.0 mass % chromium, 0.5 mass % to 2.0 mass % nickel, more than 0.50 mass % to 4.0 mass %. copper, more than 0.08 mass % to 0.6 mass % niobium, and less than 0.09 mass % nitrogen, the remainder being iron and unavoidable impurities. The carbon content, the nitrogen content, the niobium content, the chromium content, the silicon content, the nickel content, the manganese content, and the copper content satisfy the following inequalities (1) and (2): 0.03≦[C]+[N]−13/93×[Nb]≦0.09   (1) 5×[Cr]+10×[Si]+30×[Nb]−9×[Ni]−5×[Mn]−3×[Cu]−225×[N]−270×[C]≦40   (2).

Abstract translation: 提供了具有高回火软化阻力的马氏体不锈钢用于盘式制动器。 通过将钢保持在600℃以上，马氏体系不锈钢不会严重软化。钢在650℃回火1小时后，HRC中的硬度为32以上，硬度为30以上。 或分别在670℃回火1小时。 特别是用于盘式制动器的马氏体不锈钢含有小于0.050质量％的碳，1.0质量％以下的硅，2.0质量％以下的锰，0.04质量％以下的磷，0.010质量％以下的硫，0.2质量％或 大于11.5质量％至15.0质量％的铬，0.5质量％至2.0质量％的镍，大于0.50质量％至4.0质量％。 铜，0.08质量％〜0.6质量％的铌，小于0.09质量％的氮，余量为铁和不可避免的杂质。 碳含量，氮含量，铌含量，铬含量，硅含量，镍含量，锰含量和铜含量满足以下不等式（1）和（2）：0.03＆nlE; [C] + [N] -13 / 93×[Nb]＆nlE; 0.09（1）5×[Cr] + 10×[Si] + 30×[Nb] -9×[Ni] -5×[Mn] [Cu] -225×[N] -270×[C]＆nlE; 40（2）。

公开(公告)号：US07531053B2

公开(公告)日：2009-05-12

申请号：US10509469

申请日：2003-08-07

Applicant: Shinsuki Ide ,  Shin Ishikawa ,  Kenji Takao ,  Osamu Furukimi ,  Kunio Fukuda ,  Atsushi Miyazaki

Inventor： Shinsuki Ide ,  Shin Ishikawa ,  Kenji Takao ,  Osamu Furukimi ,  Kunio Fukuda ,  Atsushi Miyazaki

IPC: C22C38/22 ,  C22C38/26 ,  C21D8/00

CPC classification number: C21D8/0205 ,  C21D2211/004 ,  C22C38/004 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28

Abstract: An inexpensive metallic material for interconnects of solid-oxide fuel cells, a fuel cell using the metallic material, and a method for producing the metallic material having excellent oxidation resistance and spalling resistance of an oxide layer, high electrical conductivity, and a small difference in thermal expansion from an electrolyte. Specifically, 0.20 percent by mass or less of C, 0.02 to 1.0 percent by mass of Si, 2.0 percent by mass or less of Mn, 10 to 40 percent by mass of Cr, 0.03 to 5.0 percent by mass of Mo, 0.1 to 3.0 percent by mass of Nb, and at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Zr, and Hf in a total of 1.0 percent by mass or less are added so as to satisfy 0.1≦Mo/Nb≦30, for decreasing the growth rate of the oxide layer and improving the spalling resistance.

Abstract translation: 用于固体氧化物燃料电池的互连的廉价的金属材料，使用金属材料的燃料电池以及氧化物层具有优异的耐氧化性和耐剥离性的金属材料的制造方法，高导电性和小的差异 电解液的热膨胀。 具体地，将0.20质量％以下的C，0.02〜1.0质量％的Si，2.0质量％以下的Mn，10〜40质量％的Cr，0.03〜5.0质量％的Mo，0.1〜3.0 添加Nb的质量百分比，以及选自Sc，Y，La，Ce，Pr，Nd，Pm，Sm，Zr和Hf中的至少一种元素总计为1.0质量％以下。 为了满足0.1 <= Mo / Nb <= 30，为了降低氧化物层的生长速度和提高耐剥离性。

公开(公告)号：US20080000737A1

公开(公告)日：2008-01-03

申请号：US11794966

申请日：2005-10-20

Applicant: Junichiro Hirasawa ,  Takumi Ojiro ,  Osamu Furukimi

Inventor： Junichiro Hirasawa ,  Takumi Ojiro ,  Osamu Furukimi

IPC: F16D65/12

CPC classification number: F16D65/125 ,  F16D2200/0017 ,  F16D2200/0021

Abstract: A stainless steel sheet with excellent heat and corrosion resistances for a brake disk is provided. Specifically, in mass %, C: less than 0.10%, Si: 1.0% or less, Mn: 1.0 to 2.5%, P: 0.04% or less, S: 0.01% or less, Cr: more than 11.5% but not more than 15.0%, Ni: 0.1 to 1.0%, Al: 0.10% or less, Nb: more than 0.08% but not more than 0.6%, V: 0.02 to 0.3%, and N: more than 0.03% but not more than 0.10% are contained so that 0.03≦{C+N−(13/93)Nb}≦0.10, (5Cr+10Si+15Mo+30Nb+50V−9Ni−5Mn−3Cu−225N−270C)≦45, and {(14/50)V+(14/90)Nb}

Abstract translation: 提供了一种对制动盘具有优异耐热腐蚀性能的不锈钢板。 具体地，以质量％计，C：小于0.10％，Si：1.0％以下，Mn：1.0〜2.5％，P：0.04％以下，S：0.01％以下，Cr：超过11.5％ ，15.0％以下，Ni：0.1〜1.0％，Al：0.10％以下，Nb：0.08％以上0.6％以下，V：0.02〜0.3％，N：0.03以上0.10以下 含有0.03≤{C + N-（13/93）Nb}≤0.10，（5Cr + 10Si + 15Mo + 30Nb + 50V-9Ni-5Mn-3Cu-225N-270C）= 45，以及 {（14/50）V +（14/90）Nb}

公开(公告)号：US20070144634A1

公开(公告)日：2007-06-28

申请号：US10583220

申请日：2004-12-22

Applicant: Atsushi Miyazaki ,  Yasushi Kato ,  Osamu Furukimi

Inventor： Atsushi Miyazaki ,  Yasushi Kato ,  Osamu Furukimi

IPC: C22C38/22

CPC classification number: C21D6/002 ,  C21D8/0226 ,  C21D8/0273 ,  C21D8/0426 ,  C21D8/0473 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/26 ,  F28F21/083

Abstract: A ferritic Cr-contained steel having a reduced thermal expansion coefficient is provided. The ferritic Cr-contained steel contains C of 0.03% or less, Mn of 5.0% or less, Cr of 6 to 40%, N of 0.03% or less, Si of 5% or less, and W of 2.0% to 6.0% in percent by mass, and Fe and inevitable impurities as the remainder, wherein precipitated W is 0.1% or less in percent by mass, and an average thermal expansion coefficient between 20° C. and 800° C. is less than 12.6×10-6/° C.

Abstract translation: 提供一种具有降低的热膨胀系数的铁素体含铬钢。 铁素体含Cr钢含有0.03％以下的Mn，5.0％以下的Cr，6％〜40％的Cr，0.03％以下的N，5％以下的Si，2.0％以上6.0％以下的W。 以质量计，Fe和不可避免的杂质作为余量，其中沉淀W为0.1质量％以下，20℃〜800℃的平均热膨胀系数小于12.6×10 -6 /C。

公开(公告)号：US20050173033A1

公开(公告)日：2005-08-11

申请号：US10517886

申请日：2003-06-16

Applicant: Yoshihiro Yazawa ,  Osamu Furukimi ,  Yasushi Kato

Inventor： Yoshihiro Yazawa ,  Osamu Furukimi ,  Yasushi Kato

IPC: C22C38/00 ,  C22C38/44 ,  C22C38/50 ,  C22C38/28

CPC classification number: C22C38/004 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/44 ,  C22C38/50

Abstract: The present invention provides a Ti-containing ferritic stainless steel sheet and a manufacturing method thereof, the stainless steel being formed while a refining load is decreased and having a low yield strength which exhibits superior workability. Specifically, the Ti-containing ferritic stainless steel sheet contains on mass percent basis: 0.01% or less of C; 0.5% or less of Si; 0.3% or less of Mn; 0.01% to 0.04% of P; 0.01% or less of S; 8% to 30% of Cr; 1.0% or less of Al; 0.05% to 0.5% of Ti; 0.04% or less of N, 8≦Ti/(C+N)≦30 being satisfied; and the balance being substantially Fe and incidental impurities, wherein a grain size number of ferrite grain is 6.0 or more, and an average diameter Dp of precipitation diameters, each being [(a long axis length of a Ti base precipitate +a short axis length thereof)/2], of the Ti base precipitates in the steel sheet is in the range of from 0.05 μm to 1.0 μm. In addition, the method for manufacturing a Ti-containing ferritic stainless steel sheet includes the steps of: hot-rolling a slab having the composition described above, and performing recrystallization annealing of the hot-rolled steel sheet at a temperature of (a precipitation nose temperature of Ti base precipitates ±50° C.) so that an average diameter Dp of precipitation diameters, each being [(a long axis length of a Ti base precipitate+a short axis length thereof)/2], of the Ti base precipitates is in the range of from 0.05 μm to 1.0 μm and so that a grain size number of ferrite grain is 6.0 or more. The method for manufacturing a Ti-containing ferritic stainless steel sheet, further includes the steps of: performing cold rolling; and subsequently performing final annealing of the cold-rolled steel sheet at a temperature less than (a precipitation nose temperature of Ti base precipitates +100° C.) so that the average diameter Dp of precipitation diameters, each being [(a long axis length of a Ti base precipitate+a short axis length thereof)/2], of the Ti base precipitates is in the range of from 0.05 μm to 1.0 μm and so that the grain size number of ferrite grain is 6.0 or more.

公开(公告)号：US06733601B2

公开(公告)日：2004-05-11

申请号：US10047900

申请日：2002-01-14

Applicant: Yoshihiro Yazawa ,  Osamu Furukimi ,  Mineo Muraki ,  Yoshihiro Ozaki ,  Kunio Fukuda ,  Yukihiro Baba

Inventor： Yoshihiro Yazawa ,  Osamu Furukimi ,  Mineo Muraki ,  Yoshihiro Ozaki ,  Kunio Fukuda ,  Yukihiro Baba

IPC: C22C3822

CPC classification number: C22C38/001 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0268 ,  C21D8/0278 ,  C21D8/0468 ,  C22C38/004 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C23C30/00

Abstract: A ferritic stainless steel sheet for use in automobile fuel tanks and fuel pipes having smooth surface and resistance to organic acid is provided. The sheet contains, by mass, not more than about 0.1% C, not more than about 1.0 Si, not more than about 1.5 % Mn, not more than about 0.06% P, not more than about 0.03% S, about 11% to about 23% Cr, not more than about 2.0% Ni, about 0.5% to about 3.0% Mo, not more than about 1.0% Al, not more than about 0.04% N, at least one of not more than about 0.8% Nb and not more than about 1.0% Ti, and the balance being Fe and unavoidable impurities, satisfying the relationship: 18≦Nb/(C+N)+2Ti/(C+N)≦60, wherein C, N, Nb, and. Ti in the relationship represent the C, N, Nb, and Ti contents by mass percent, respectively. A process for making the same is also provided.

Abstract translation: 提供了一种用于汽车燃料箱的铁素体不锈钢板和具有光滑表面和耐有机酸的燃料管。 该片材质量不超过约0.1％C，不大于约1.0Si，不大于约1.5％Mn，不大于约0.06％P，不大于约0.03％S，约11％ 约23％的Cr，不超过约2.0％的Ni，约0.5％至约3.0％的Mo，不大于约1.0％的Al，不超过约0.04％的N，至少一种不大于约0.8％的Nb和 不超过约1.0％Ti，余量为Fe和不可避免的杂质，满足关系：18 <= Nb /（C + N）+ 2Ti /（C + N）≤60，其中C，N，Nb， 和。 该关系中的Ti分别表示C，N，Nb和Ti的质量百分比含量。 还提供了制备其的方法。

公开(公告)号：US06331216B1

公开(公告)日：2001-12-18

申请号：US09214226

申请日：1998-12-30

Applicant: Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Nobuki Tanaka ,  Taro Kanayama ,  Osamu Furukimi ,  Masahiko Morita ,  Takaaki Hira ,  Saiji Matsuoka

Inventor： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Nobuki Tanaka ,  Taro Kanayama ,  Osamu Furukimi ,  Masahiko Morita ,  Takaaki Hira ,  Saiji Matsuoka

IPC: C21D713

CPC classification number: C21D8/10 ,  C21D2201/00 ,  C21D2211/005

Abstract: The steel pipe has a structure composed mainly of ferrite or ferrite plus pearlite or ferrite plus cementite. The steel pipe is characterized by grain size not greater than 3 &mgr;m, preferably not greater than 1 &mgr;m, elongation greater than 20%, tensile strength (TS:MPa) and elongation (E1:%) whose product is greater than 10000, and percent ductile fracture greater than 95%, preferably 100%, measured by Charpy impact test on an actual pipe at −100° C. The structure is characterized by C: 0.005-0.03%, Si: 0.01-3.0%, Mn: 0.01-2.0%, and Al: 0.001-0.10% on a weight basis, and is composed of ferrite or ferrite and a secondary phase, with ferrite grains being not greater than 3 &mgr;m and the secondary phase having an areal ratio not more than 30%. A steel pipe stock having the above-mentioned composition is heated at a temperature of (Ac1+50° C.) to 400° C. and subsequently reduced at a rolling temperature of (Ac1+50° C.) to 400° C. such that the cumulative reduction of diameter is greater than 20%. The reducing is preferably performed such that at least one of rolling passes reduces the diameter by more than 6% per pass. The steel pipe will have high ductility and high strength and will be superior in toughness and stress corrosion cracking resistance, if the content of C, Si, Mn, and other alloying elements is limited low and reducing is performed at the temperature specified above. The resulting steel pipe has good fatigue resistance and is suitable for use as line pipe.

Abstract translation: 钢管具有主要由铁素体或铁素体加珠光体或铁素体和渗碳体组成的结构。 钢管的特征在于，其粒径不大于3μm，优选不大于1μm，伸长率大于20％，拉伸强度（TS：MPa）和伸长率（E1：％）大于10000， 延性断裂大于95％，优选100％，通过夏比冲击试验在-100℃的实际管上测量。该结构的特征在于C：0.005-0.03％，Si：0.01-3.0％，Mn：0.01-2.0 ％，Al：0.001-0.10％，由铁素体或铁素体和二次相组成，铁素体晶粒不大于3μm，第二相的面积比不大于30％。 将具有上述组成的钢管坯料在（Ac1 + 50℃）的温度下加热至400℃，随后在（Ac1 + 50℃）的轧制温度下降低至400℃。 使得直径的累积减小大于20％。 优选地进行还原，使得至少一个轧制通道将直径每次通过减少6％以上。 如果C，Si，Mn和其他合金元素的含量低，并且在上述规定的温度下进行还原，则钢管将具有高延展性和高强度，并且在韧性和耐应力腐蚀开裂性方面优异。 所得钢管具有良好的抗疲劳性能，适用于管线管。

公开(公告)号：US5308702A

公开(公告)日：1994-05-03

申请号：US827343

申请日：1992-01-29

Applicant: Osamu Furukimi ,  Koji Yano ,  Shigeaki Takajo

Inventor： Osamu Furukimi ,  Koji Yano ,  Shigeaki Takajo

IPC: B22F1/02 ,  C22C33/02 ,  B22F1/00 ,  B32B15/02

CPC classification number: C22C33/0207 ,  Y10T428/12181 ,  Y10T428/2991 ,  Y10T428/2998

Abstract: Improved iron-base powder composition for use in powder metallurgy comprising an iron-base powder to the surfaces of the particles of which either an Fe-Ni powder alloy containing 5-70 wt % Ni or an Fe-Mo alloy powder containing 20-70 wt % Mo or both alloy powders is adhered means of a binder or binders. This iron-base powder composition can be obtained by a process in which either an Fe-Ni alloy powder containing 5-70 wt % Ni or an Fe-Mo alloy powder containing 20-70 wt % Mo or both alloy powders is adhered by thermally melting a binder. The thus obtained iron-base powder composition can be shaped and sintered to produce an iron-base sintered material. The iron-base powder composition is suitable for use in the powder metallurgical manufacture of iron-base sintered parts that require high density, high strength, toughness, wear resistance and good dimensional change stability.

Abstract translation: 改进的用于粉末冶金的铁基粉末组合物，其包含铁基粉末到颗粒表面，其中含有5-70重量％Ni的Fe-Ni粉末合金或含有20-70重量％的Fe-Mo合金粉末 wt％Mo或两种合金粉末是粘合剂或粘合剂的粘合方式。 该铁基粉末组合物可以通过以下方法获得：将含有5-70重量％Ni的Fe-Ni合金粉末或含有20-70重量％Mo的Fe-Mo合金粉末或两种合金粉末通过热粘合 熔化粘合剂 由此获得的铁基粉末组合物可以成形并烧结以制备铁基烧结材料。 铁基粉末组合物适用于需要高密度，高强度，韧性，耐磨性和良好的尺寸变化稳定性的铁基烧结零件的粉末冶金制造。

公开(公告)号：US5098648A

公开(公告)日：1992-03-24

申请号：US714646

申请日：1991-06-13

Applicant: Yoshisato Kiyota ,  Osamu Furukimi

Inventor： Yoshisato Kiyota ,  Osamu Furukimi

IPC: C22C38/00 ,  C22C33/02 ,  C22C38/10 ,  H01F1/22

CPC classification number: H01F1/22 ,  C22C33/0207 ,  C22C33/0285

Abstract: Disclosed herein is an economical process for the production of a sintered Fe-Co type, Fe-Co-V type or Fe-Co-Cr type magnetic material, which comprises preparing an alloy powder of at least Fe and Co metals of a like powder, kneading it with an organic binder, conducting injection molding and debinding, and then conducting a two-stage sintering treatment consisting of low-temperature sintering and high-temperature sintering. Magnetic materials having a specific composition of the Fe-Co, Fe-Co-V or Fe-Co-Cr type and excellent magnetic properties and a low core loss value are also disclosed.