公开(公告)号：US09090952B2

公开(公告)日：2015-07-28

申请号：US13517417

申请日：2010-12-24

Applicant: Yoichi Makimizu ,  Yoshitsugu Suzuki ,  Mai Miyata ,  Naoto Yoshimi ,  Junichiro Hirasawa ,  Shinji Otsuka ,  Hideki Nagano ,  Kohei Hasegawa

Inventor： Yoichi Makimizu ,  Yoshitsugu Suzuki ,  Mai Miyata ,  Naoto Yoshimi ,  Junichiro Hirasawa ,  Shinji Otsuka ,  Hideki Nagano ,  Kohei Hasegawa

IPC: C23C8/14 ,  C22C38/02 ,  C21D1/74 ,  C21D1/76 ,  C21D9/46 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C23C22/78 ,  C23C8/02 ,  C23C8/80 ,  C22C38/00 ,  C21D6/00 ,  C23C8/10

CPC classification number: C21D1/74 ,  C21D1/52 ,  C21D1/76 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0457 ,  C21D9/46 ,  C21D9/48 ,  C21D9/561 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C23C8/02 ,  C23C8/14 ,  C23C8/80 ,  C23C22/78 ,  C23G1/08 ,  C23G1/081

Abstract: A high-strength cold-rolled steel sheet having high chemical convertibility and a tensile strength of 590 MPa or more and a method for producing such a steel sheet are provided. The steel sheet contains, in terms of percent by mass, C: 0.05 to 0.3%, Si: 0.6 to 3.0%, Mn: 1.0 to 3.0%, P: 0.1% or less, S: 0.05% or less, Al: 0.01 to 1%, N: 0.01% or less, and the balance being Fe and unavoidable impurities. The coverage ratio of reduced iron on a steel sheet surface is 40% or more. In order to produce such a steel sheet, an oxidation treatment is performed after cold rolling. Subsequently, annealing is conducted in a furnace in a 1 to 10 vol % H2+balance N2 gas atmosphere with a dew point of −25° C. or less.

Abstract translation: 提供了具有高化学可转换性和拉伸强度为590MPa以上的高强度冷轧钢板以及这种钢板的制造方法。 钢板以质量％计含有C：0.05〜0.3％，Si：0.6〜3.0％，Mn：1.0〜3.0％，P：0.1％以下，S：0.05％以下，Al：0.01 至1％，N：0.01％以下，余量为Fe和不可避免的杂质。 钢板表面的还原铁的覆盖率为40％以上。 为了制造这种钢板，在冷轧后进行氧化处理。 随后，在1〜10体积％的H 2 +平衡N 2气体气氛中，在露点为-25℃以下的炉中进行退火。

公开(公告)号：US08852361B2

公开(公告)日：2014-10-07

申请号：US11794966

申请日：2005-10-20

Applicant: Junichiro Hirasawa ,  Takumi Ujiro ,  Osamu Furukimi

Inventor： Junichiro Hirasawa ,  Takumi Ujiro ,  Osamu Furukimi

IPC: C22C38/00 ,  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和n C; N（C + N - （13/93）Nb}＆nlE; 0.10，（5Cr + 10Si + 15Mo + 30Nb + 50V-9Ni-5Mn-3Cu-225N-270C） {（14/50）V +（14/90）Nb}

公开(公告)号：USRE44709E1

公开(公告)日：2014-01-21

申请号：US12465286

申请日：2009-05-13

Applicant: Atsushi Miyazaki ,  Junichiro Hirasawa ,  Mineo Muraki ,  Yoshihiro Yazawa ,  Osamu Furukimi

Inventor： Atsushi Miyazaki ,  Junichiro Hirasawa ,  Mineo Muraki ,  Yoshihiro Yazawa ,  Osamu Furukimi

IPC: C22C38/44 ,  C22C38/48

CPC classification number: C22C38/48 ,  C21D6/004 ,  C21D6/02 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46

Abstract: The soft Cr-containing steel includes, on a % by mass basis, C: from about 0.001% to about 0.020%, Si: more than about 0.10% and less than about 0.50%, Mn: less than about 2.00%, P: less than about 0.060%, S: less than about 0.008%, Cr: from about 12.0% to about 16.0%, Ni: from about 0.05% to about 1.00%, N: less than about 0.020%, Nb: from about 10×(C+N) to about 1.00%, Mo: more than about 0.80% and less than about 3.00%, wherein the contents of alloying elements, represented by Si and Mo, respectively, on a % by mass, satisfy the formula Si≦1.2-0.4 Mo, so as to prevent precipitation of the Laves phase and to stably secure an effect of increasing high-temperature strength due to solid solution Mo.

Abstract translation: 含有软Cr的钢包括以质量％计，C：约0.001％至约0.020％，Si：大于约0.10％且小于约0.50％，Mn：小于约2.00％，P： 小于约0.060％，S：小于约0.008％，Cr：约12.0％至约16.0％，Ni：约0.05％至约1.00％，N：小于约0.020％，Nb：约10× （C + N）至约1.00％，Mo：大于约0.80％且小于约3.00％，其中由Si和Mo表示的合金元素的含量分别为质量％满足式Si @ 1.2-0.4 Mo，以防止Laves相沉淀，并稳定地确保由于固溶Mo而使高温强度提高的效果。

公开(公告)号：US07341690B2

公开(公告)日：2008-03-11

申请号：US10729904

申请日：2003-12-09

Applicant: Atsushi Miyazaki ,  Junichiro Hirasawa ,  Mineo Muraki ,  Yoshihiro Yazawa ,  Osamu Furukimi

Inventor： Atsushi Miyazaki ,  Junichiro Hirasawa ,  Mineo Muraki ,  Yoshihiro Yazawa ,  Osamu Furukimi

IPC: C22C38/44 ,  C22C38/48

CPC classification number: C22C38/48 ,  C21D6/004 ,  C21D6/02 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46

Abstract: The soft Cr-containing steel includes, on a % by mass basis, C: from about 0.001% to about 0.020%, Si: more than about 0.10% and less than about 0.50%, Mn: less than about 2.00%, P: less than about 0.060%, S: less than about 0.008%, Cr: from about 12.0% to about 16.0%, Ni: from about 0.05% to about 1.00%, N: less than about 0.020%, Nb: from about 10×(C+N) to about 1.00%, Mo: more than about 0.80% and less than about 3.00%, wherein the contents of alloying elements, represented by Si and Mo, respectively, on a % by mass, satisfy the formula Si≦1.2−0.4Mo, so as to prevent precipitation of the Laves phase and to stably secure an effect of increasing high-temperature strength due to solid solution Mo.

Abstract translation: 含有软Cr的钢包括以质量％计，C：约0.001％至约0.020％，Si：大于约0.10％且小于约0.50％，Mn：小于约2.00％，P： 小于约0.060％，S：小于约0.008％，Cr：约12.0％至约16.0％，Ni：约0.05％至约1.00％，N：小于约0.020％，Nb：约10x C + N）至约1.00％，Mo：大于约0.80％且小于约3.00％，其中由Si和Mo表示的合金元素的含量分别为质量％满足式Si < 1.2-0.4Mo，以防止Laves相沉淀，并稳定地确保由于固溶Mo而使高温强度提高的效果。

公开(公告)号：US20060113008A1

公开(公告)日：2006-06-01

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: C22C38/26

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）：< 公式描述=“在线公式”end =“lead”？> 0.03 <= [C] + [N] -13 / 93x [Nb] <= 0.09（1）<？in-line-formula description =“In “公式”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 5x [Cr] + 10x [Si] + 30x [Nb] -9x [ Ni] -5x [Mn] -3x [Cu] -225x [N] -270x [C] <= 40（2）。 <？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US06740174B2

公开(公告)日：2004-05-25

申请号：US09987327

申请日：2001-11-14

Applicant: Atsushi Miyazaki ,  Junichiro Hirasawa ,  Mineo Muraki ,  Yoshihiro Yazawa ,  Osamu Furukimi

Inventor： Atsushi Miyazaki ,  Junichiro Hirasawa ,  Mineo Muraki ,  Yoshihiro Yazawa ,  Osamu Furukimi

IPC: C22C3844

CPC classification number: C22C38/48 ,  C21D6/004 ,  C21D6/02 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46

Abstract: The soft Cr-containing steel includes, on a % by mass basis, C: from about 0.001% to about 0.020%, Si: more than about 0.10% and less than about 0.50%, Mn: less than about 2.00%, P: less than about 0.060%, S: less than about 0.008%, Cr: from about 12.0% to about 16.0%, Ni: from about 0.05% to about 1.00%, N: less than about 0.020%, Nb: from about 10×(C+N) to about 1.00%, Mo: more than about 0.80% and less than about 3.00%, wherein the contents of alloying elements, represented by Si and Mo, respectively, on a % by mass, satisfy the formula Si ≦1.2−0.4 Mo, so as to prevent precipitation of the Laves phase and to stably secure an effect of increasing high-temperature strength due to solid solution Mo.

Abstract translation: 含有软Cr的钢包括以质量％计，C：约0.001％至约0.020％，Si：大于约0.10％且小于约0.50％，Mn：小于约2.00％，P： 小于约0.060％，S：小于约0.008％，Cr：约12.0％至约16.0％，Ni：约0.05％至约1.00％，N：小于约0.020％，Nb：约10x C + N）至约1.00％，Mo：大于约0.80％且小于约3.00％，其中由Si和Mo表示的合金元素的含量分别为质量％满足式Si < 1.2-0.4 Mo，以防止Laves相沉淀，并稳定地确保由于固溶Mo而使高温强度提高的效果。

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：US20120325376A1

公开(公告)日：2012-12-27

申请号：US13517417

申请日：2010-12-24

Applicant: Yoichi Makimizu ,  Yoshitsugu Suzuki ,  Mai Miyata ,  Naoto Yoshimi ,  Junichiro Hirasawa ,  Shinji Otsuka ,  Hideki Nagano ,  Kohei Hasegawa

Inventor： Yoichi Makimizu ,  Yoshitsugu Suzuki ,  Mai Miyata ,  Naoto Yoshimi ,  Junichiro Hirasawa ,  Shinji Otsuka ,  Hideki Nagano ,  Kohei Hasegawa

IPC: B32B15/04 ,  C21D8/02 ,  C23C8/80 ,  C23C8/10 ,  C23C8/02

CPC classification number: C21D1/74 ,  C21D1/52 ,  C21D1/76 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0457 ,  C21D9/46 ,  C21D9/48 ,  C21D9/561 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C23C8/02 ,  C23C8/14 ,  C23C8/80 ,  C23C22/78 ,  C23G1/08 ,  C23G1/081

Abstract: A high-strength cold-rolled steel sheet having high chemical convertibility and a tensile strength of 590 MPa or more and a method for producing such a steel sheet are provided. The steel sheet contains, in terms of percent by mass, C: 0.05 to 0.3%, Si: 0.6 to 3.0%, Mn: 1.0 to 3.0%, P: 0.1% or less, S: 0.05% or less, Al: 0.01 to 1%, N: 0.01% or less, and the balance being Fe and unavoidable impurities. The coverage ratio of reduced iron on a steel sheet surface is 40% or more. In order to produce such a steel sheet, an oxidation treatment is performed after cold rolling. Subsequently, annealing is conducted in a furnace in a 1 to 10 vol % H2+balance N2 gas atmosphere with a dew point of −25° C. or less.

Abstract translation: 提供了具有高化学可转换性和拉伸强度为590MPa以上的高强度冷轧钢板以及这种钢板的制造方法。 钢板以质量％计含有C：0.05〜0.3％，Si：0.6〜3.0％，Mn：1.0〜3.0％，P：0.1％以下，S：0.05％以下，Al：0.01 至1％，N：0.01％以下，余量为Fe和不可避免的杂质。 钢板表面的还原铁的覆盖率为40％以上。 为了制造这种钢板，在冷轧后进行氧化处理。 随后，在1〜10体积％的H 2 +平衡N 2气体气氛中，在露点为-25℃以下的炉中进行退火。

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：US06426039B2

公开(公告)日：2002-07-30

申请号：US09892370

申请日：2001-06-27

Applicant: Junichiro Hirasawa ,  Atsushi Miyazaki ,  Mineo Muraki ,  Susumu Satoh

Inventor： Junichiro Hirasawa ,  Atsushi Miyazaki ,  Mineo Muraki ,  Susumu Satoh

IPC: C22C3852

CPC classification number: C22C38/06 ,  C22C38/001 ,  C22C38/004 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C22C38/54

Abstract: Ferritic stainless steel comprising all three of Co, V, and B, having a Co content of about 0.01 mass % to about 0.3 mass %, a V content of about 0.01 mass % to about 0.3 mass %, and a B content of about 0.0002 mass % to about 0.0050 mass %, and having superior secondary working embrittleness resistance and superior high temperature fatigue characteristics.