公开(公告)号：US07252724B2

公开(公告)日：2007-08-07

申请号：US10643227

申请日：2003-08-18

申请人： Akio Tosaka ,  Sinjiro Kaneko ,  Yoichi Tominaga ,  Noriyuki Katayama ,  Nobutaka Kurosawa ,  Kei Sakata ,  Osamu Furukimi

发明人： Akio Tosaka ,  Sinjiro Kaneko ,  Yoichi Tominaga ,  Noriyuki Katayama ,  Nobutaka Kurosawa ,  Kei Sakata ,  Osamu Furukimi

IPC分类号： C21D8/02

CPC分类号： C21D8/0226 ,  C21D8/0236 ,  C21D2221/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

摘要： A high tensile strength hot-rolled steel sheet having superior strain aging hardenability, which has high formability and stable quality characteristics, and in which satisfactory strength is obtained when the steel sheet is formed into automotive components, thus enabling the reduction in weight of automobile bodies is provided. Specifically, a method for producing a high tensile strength hot-rolled steel sheet having superior strain aging hardenability with a BH of 80 MPa or more, a ΔTS of 40 MPa or more, and a tensile strength of 440 MPa or more includes the steps of heating a steel slab to 1,000° C. or more, the steel slab containing, in percent by mass 0.15% or less of C, 2.0% or less of Si, 3.0% or less of Mn, 0.08% or less of P, 0.02% or less of S, 0.02% or less of Al, 0.0050% to 0.0250% of N, and optionally 0.1% or less in total of at least one of more than 0.02% to 0.1% of Nb and more than 0.02% to 0.1% of V, the ratio N (mass %)/Al (mass %) being 0.3 or more, rough-rolling the steel slab to form a sheet bar; finish-rolling the sheet bar at a finishing temperature of 800° C. or more; cooling at a cooling rate of 20° C. to 40° C./s or more within 0.5 second after the finish-rolling; and coiling at a temperature of 650° C. to 450° C. or less.

摘要翻译： 具有优异的应变时效淬透性的高拉伸强度热轧钢板，其成形性高，质量特性稳定，当将钢板形成汽车部件时，能够获得令人满意的强度，能够减轻汽车车身的重量 被提供。 具体而言，制造具有优异的应变时效淬透性，BH为80MPa以上，ΔTS为40MPa以上，拉伸强度为440MPa以上的高强度热轧钢板的制造方法，其特征在于， 将钢坯加热至1000℃以上时，含有以质量％计含有0.15％以下的Si，2.0％以下的Si，3.0％以下的Mn，0.08％以下的P，0.02 S％以下，Al：0.02％以下，N：0.0050〜0.0250％，Nb：0.02〜0.1％，Nb：0.02〜0.1％ V的百分比，N（质量％）/ Al（质量％）的比例为0.3以上，对钢坯进行粗轧以形成板坯; 在800℃或更高的终轧温度下对板材进行精轧; 在精轧后的0.5秒内以20℃至40℃/秒的冷却速度冷却; 并在650℃至450℃或更低的温度下卷取。

公开(公告)号：US20060113008A1

公开(公告)日：2006-06-01

申请号：US10546248

申请日：2004-04-23

申请人： Junichiro Hirasawa ,  Yoshihiro Ozaki ,  Takumi Ujiro ,  Osamu Furukimi

发明人： Junichiro Hirasawa ,  Yoshihiro Ozaki ,  Takumi Ujiro ,  Osamu Furukimi

IPC分类号： C22C38/26

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

摘要： 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).

摘要翻译： 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

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

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

IPC分类号： C22C3844

CPC分类号： C22C38/48 ,  C21D6/004 ,  C21D6/02 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46

摘要： 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.

摘要翻译： 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：US06425963B1

公开(公告)日：2002-07-30

申请号：US09490267

申请日：2000-01-24

申请人： Shinjiro Kaneko ,  Tetsuo Shimizu ,  Osamu Furukimi

发明人： Shinjiro Kaneko ,  Tetsuo Shimizu ,  Osamu Furukimi

IPC分类号： C22C3800

CPC分类号： C21D8/0226 ,  C22C38/001 ,  C22C38/04

摘要： High tensile strength hot-rolled steel sheet suitable for use in interior materials for automobiles and a method for producing the same, in which bake hardenability, fatigue resistance, crash resistance, and resistance to room temperature aging are improved, containing 0.01% to 0.12% by weight of carbon, 2.0% by weight or less of silicon, 0.01% to 3.0% by weight of manganese, 0.2% by weight or less of phosphorus, 0.001% to 0.1% by weight of aluminum, and 0.003% to 0.02% by weight of nitrogen and subjected to hot rolling and cooling at a cooling rate of 50° C./s or more within 0.5 second after hot rolling; the hot-rolled steel sheet has a structure including a ferrite having an average grain diameter of 8 &mgr;m or less as a primary phase, the amount of solute Nitrogen ranges from 0.003% to 0.01%, and the ratio, Ngb/Ng, of an average concentration Ngb of nitrogen dissolved in the ferrite grain boundary to an average concentration Ng of nitrogen dissolved in ferrite grains ranges from 100 to 10,000.

摘要翻译： 适用于汽车内饰材料的高强度热轧钢板及其制造方法，其中烘烤淬透性，耐疲劳性，抗冲击性和耐室温老化性均得到改善，含有0.01％至0.12％ 的碳，2.0重量％以下的硅，0.01〜3.0重量％的锰，0.2重量％以下的磷，0.001〜0.1重量％的铝，0.003〜0.02重量％ 并在热轧后0.5秒内以50℃/ s以上的冷却速度进行热轧冷却; 热轧钢板具有平均粒径为8μm以下的铁素体作为主相的结构，溶质氮的含量为0.003〜0.01％，Ngb / Ng的比例为 溶解在铁素体晶界中的氮的平均浓度Ngb与溶解在铁素体晶粒中的氮的平均浓度Ng的关系为100〜10000。

公开(公告)号：US5853659A

公开(公告)日：1998-12-29

申请号：US806765

申请日：1997-02-26

申请人： Takashi Sekita ,  Taro Yahiro ,  Saiji Matsuoka ,  Toshio Fujimura ,  Takemi Yamamoto ,  Masahiko Morita ,  Osamu Furukimi ,  Arata Ueda

发明人： Takashi Sekita ,  Taro Yahiro ,  Saiji Matsuoka ,  Toshio Fujimura ,  Takemi Yamamoto ,  Masahiko Morita ,  Osamu Furukimi ,  Arata Ueda

IPC分类号： C21C7/10 ,  C21D8/04 ,  C22C38/00 ,  C22C38/12 ,  C22C38/14 ,  C21C5/52 ,  C21D8/02 ,  C22C38/08

CPC分类号： C22C38/004 ,  C21D8/041 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/60 ,  C21C7/10 ,  C21D8/0426 ,  C21D8/0436 ,  Y02P10/216

摘要： Steel having excellent workability and deep drawability is produced by an electric furnace-vacuum degassing process. The steel has a composition which comprises about: C: 0.0050 wt % or less Si: 1.5 wt % or less Mn: 1.5 wt % or less P: 0.10 wt % or less Al: 0.10 wt % or less S: 0.020 wt % or less O: 0.01 wt % or less Cu: 0.02-1.5 wt % Ni: 0.02-2.0 wt % Ti and/or Nb: from 0.001 to 0.10 wt % N: from 0.0040 to 0.0090 wt %.

摘要翻译： 通过电炉 - 真空脱气工艺制造具有优异的可加工性和深冲性的钢。 钢的组成为：C：0.0050重​​量％以下Si：1.5重量％以下Mn：1.5重量％以下P：0.10重量％以下Al：0.10重量％以下S：0.020重量％ 少量O：0.01重量％以下Cu：0.02〜1.5重量％Ni：0.02〜2.0重量％Ti和/或Nb：0.001〜0.10重量％N：0.0040〜0.0090重量％。

公开(公告)号：US20090202384A1

公开(公告)日：2009-08-13

申请号：US12367577

申请日：2009-02-09

申请人： Akio Tosaka ,  Sinjiro Kaneko ,  Yoichi Tominaga ,  Noriyuki Katayama ,  Nobutaka Kurosawa ,  Kei Sakata ,  Osamu Furukimi

发明人： Akio Tosaka ,  Sinjiro Kaneko ,  Yoichi Tominaga ,  Noriyuki Katayama ,  Nobutaka Kurosawa ,  Kei Sakata ,  Osamu Furukimi

IPC分类号： C22C38/00 ,  C22C38/16 ,  C22C38/18 ,  C22C38/08 ,  C22C38/14 ,  C22C38/12

CPC分类号： C21D8/0226 ,  C21D8/0236 ,  C21D2221/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

摘要： A high tensile strength hot-rolled steel sheet having superior strain aging hardenability, which has high formability and stable quality characteristics, and in which satisfactory strength is obtained when the steel sheet is formed into automotive components, thus enabling the reduction in weight of automobile bodies. Specifically, a method for producing a high tensile strength hot-rolled steel sheet having superior strain aging hardenability with a BH of 80 MPa or more, a ΔTS of 40 MPa or more, and a tensile strength of 440 MPa or more includes the steps of heating a steel slab to 1,000° C. or more, the steel slab containing, in percent by mass, 0.15% or less of C, 0.45% or less of Si, 3.0% or less of Mn, 0.08% or less of P, 0.02% or less of S, 0.02% or less of Al, 0.0050% to 0.0250% of N, and optionally 0.1% or less in total of at least one of more than 0.02% to 0.1% of Nb and more than 0.02% to 0.1% of V, the ratio N (mass %)/Al (mass %) being 0.86 or more; rough-rolling the steel slab to form a sheet bar; finish-rolling the sheet bar at a finishing temperature of 800° C. or more; cooling at a cooling rate of 20° C. to 40° C./s or more within 0.5 second after the finish-rolling; and coiling at a temperature of 650° C. to 450° C. or less.

摘要翻译： 具有优异的应变时效淬透性的高拉伸强度热轧钢板，其成形性高，质量特性稳定，当将钢板形成汽车部件时，能够获得令人满意的强度，能够减轻汽车车身的重量 。 具体而言，制造具有优异的应变时效淬透性，BH为80MPa以上，ΔTTS为40MPa以上，拉伸强度为440MPa以上的高强度热轧钢板的制造方法，其特征在于， 将钢坯加热至1000℃以上时，所述钢坯以质量％计含有0.15％以下的C，0.45％以下的Si，3.0％以下的Mn，0.08％以下的P， 0.02％以下的S，0.02％以下的Al，0.0050％〜0.0250％的N，任意的0.1％以下，Nb中的0.02％以上0.1％以下，0.02％以上，0.02％以上， 0.1％的V，N（质量％）/ Al（质量％）的比例为0.86以上; 粗轧钢板以形成板材; 在800℃或更高的终轧温度下对板材进行精轧; 在精轧后的0.5秒内以20℃至40℃/秒的冷却速度冷却; 并在650℃至450℃或更低的温度下卷取。

公开(公告)号：US20090104068A1

公开(公告)日：2009-04-23

申请号：US12297099

申请日：2006-10-05

申请人： Junichiro Hirasawa ,  Takumi Ujiro ,  Osamu Furukimi

发明人： Junichiro Hirasawa ,  Takumi Ujiro ,  Osamu Furukimi

IPC分类号： C22C38/52 ,  C22C38/30 ,  C22C38/50 ,  C22C38/38 ,  C22C38/18 ,  C22C38/24 ,  C22C38/44 ,  C22C38/20 ,  C22C38/26 ,  C22C38/22 ,  C22C38/12

CPC分类号： F16D65/125 ,  C21D1/18 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/20 ,  C22C38/26 ,  C22C38/38 ,  C22C38/40 ,  C22C38/46 ,  C22C38/56 ,  F16D2200/0017

摘要： A brake disk excellent in temper softening resistance and toughness comprising, by mass, 0.1% or less of C, 1.0% or less of Si, 2.0% or less of Mn, 10.5% to 15.0% of Cr, and 0.1% or less of N, the remainder being Fe and unavoidable impurities, such that the following inequalities are satisfied: 5Cr+10Si+15Mo+30Nb−9Ni—5Mn—3Cu−225N−270C

摘要翻译： 具有优异的回火软化性和韧性的制动盘，其含有C：0.1％以下，Si：1.0％以下，Mn：2.0％以下，Cr：10.5〜15.0％，Cr：0.1％以下 N，其余为Fe和不可避免的杂质，使得满足以下不等式：5Cr + 10Si + 15Mo + 30Nb-9Ni-5Mn-3Cu-225N-270C <45（1）和0.03 <= {C + N- 13/92）Nb} <= 0.09（2）其中Cr，Si，Mo，Nb，Ni，Mn，Cu，N和C分别以质量％表示相应元素的含量，并且具有马氏体结构 具有平均直径为8至小于15μm的先前奥氏体晶粒。

公开(公告)号：US20090056838A1

公开(公告)日：2009-03-05

申请号：US11918375

申请日：2006-07-31

申请人： Kazuhide Ishii ,  Tomohiro Ishii ,  Osamu Furukimi

发明人： Kazuhide Ishii ,  Tomohiro Ishii ,  Osamu Furukimi

IPC分类号： C21D8/00 ,  C22C38/18

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

摘要： 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.

摘要翻译： 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％，N为0.03 ％以下，C + N为0.05％以下，剩余部分为Fe和不可避免的杂质，其中240 + 35x（Cr％-20.5）+ 280×{Ti％-4x（C％+ N％）}> = 280。

公开(公告)号：US07294212B2

公开(公告)日：2007-11-13

申请号：US10834920

申请日：2004-04-30

申请人： Junichiro Hirasawa ,  Takumi Ujiro ,  Osamu Furukimi

发明人： Junichiro Hirasawa ,  Takumi Ujiro ,  Osamu Furukimi

IPC分类号： C22C38/44 ,  C21D8/00

CPC分类号： C22C38/06 ,  C21D6/002 ,  C21D6/004 ,  C21D8/0205 ,  C21D2211/005 ,  C21D2211/008 ,  C22C1/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44

摘要： Material for stainless steel sheets is heated to a temperature within a range of 850 to 1250° C. and cooled at a rate 1° C./s or faster, the material including 0.02% by mass or less of C, 1.0% by mass or less of Si, 2.0% by mass or less of Mn, 0.04% by mass or less of P, 0.01% by mass or less of S, 0.1% by mass or less of Al, 11% by mass or more but less than 17% by mass of Cr, 0.5% by mass or more but, less than 3.0% by mass of Ni, and 0.02% by mass or less of N, so as to satisfy specific relationships between the compositions.

摘要翻译： 将不锈钢板的材料加热至850〜1250℃的温度，以1℃/秒以上的速度进行冷却，该材料含有0.02质量％以下的C，1.0质量％ 的Si以下，2.0质量％以下的Mn，0.04质量％以下的P，0.01质量％以下的S，0.1质量％以下的Al，11质量％以上且小于 17质量％的Cr，0.5质量％以上，小于3.0质量％的Ni，0.02质量％以下的N，以满足组合物之间的具体关系。

公开(公告)号：US20050019601A1

公开(公告)日：2005-01-27

申请号：US10909049

申请日：2004-07-30

申请人： Saiji Matsuoka ,  Tetsuo Shimizu ,  Kei Sakata ,  Osamu Furukimi

发明人： Saiji Matsuoka ,  Tetsuo Shimizu ,  Kei Sakata ,  Osamu Furukimi

IPC分类号： C22C38/00 ,  C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/16 ,  C23C2/02 ,  C23C2/28 ,  B32B15/00

CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D8/0278 ,  C22C38/04 ,  C22C38/12 ,  C22C38/16 ,  C23C2/02 ,  C23C2/28 ,  Y10T428/12799

摘要： A steel sheet composition contains appropriate amounts of C, Si, Mn, P, S, Al and N and 0.5 to 3.0% Cu. A composite structure of the steel sheet has a ferrite phase or a ferrite phase and a tempered martensite phase as a primary phase, and a secondary phase containing retained austenite in a volume ratio of not less than 1%. In place of the Cu, at least one of Mo, Cr, and W may be contained in a total amount of not more than 2.0%. This composition is useful in production of a high-ductility hot-rolled steel sheet, a high-ductility cold-rolled steel sheet and a high-ductility hot-dip galvanized steel sheet having excellent press formability and excellent stain age hardenability as represented by a ΔTS of not less than 80 MPa, in which the tensile strength increases remarkably through a heat treatment at a relatively low temperature after press forming.

摘要翻译： 钢板组合物含有适量的C，Si，Mn，P，S，Al和N以及0.5〜3.0％的Cu。 钢板的复合结构具有铁素体相或铁素体相，回火马氏体相作为主相，第二相含有体积比为1％以上的残留奥氏体。 代替Cu，Mo，Cr和W中的至少一种可以含有不超过2.0％的总量。 该组合物可用于生产高延展性热轧钢板，高延展性冷轧钢板和高延展性热浸镀锌钢板，其具有优异的压制成形性和优异的耐老化淬透性，如 通过压制成形后的较低温度下的热处理，拉伸强度不大于80MPa的ΔTS值。