公开(公告)号：US20090277544A1

公开(公告)日：2009-11-12

申请号：US12307439

申请日：2007-06-19

申请人： Shunsuke Toyoda ,  Masatoshi Aratani ,  Yoshikazu Kawabata ,  Yuji Hashimoto ,  Koji Suzuki ,  Kei Sakata ,  Makio Gunji ,  Akio Sato ,  Tetsuro Sawaki

发明人： Shunsuke Toyoda ,  Masatoshi Aratani ,  Yoshikazu Kawabata ,  Yuji Hashimoto ,  Koji Suzuki ,  Kei Sakata ,  Makio Gunji ,  Akio Sato ,  Tetsuro Sawaki

IPC分类号： C21D9/08 ,  C22C38/02 ,  C22C38/26

CPC分类号： B21C37/08 ,  C21D1/26 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/08 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14

摘要： A high-tensile strength welded steel tube has excellent formability and torsional fatigue endurance after being formed into cross-sectional shape and then stress-relief annealed. A steel material used has a composition which contains C, Si, Al, 1.01% to 1.99% Mn, 0.041% to 0.150% Ti, 0.017% to 0.150% Nb, P, S, N, and O such that the sum of the content of Ti and that of Nb is 0.08% or more, the content of each of C, Si, and Al being within an appropriate range, the content of each of P, S, N, and O being adjusted to a predetermined value or less.

摘要翻译： 高强度焊接钢管在成形为截面形状后进行抗应力退火退火，具有优异的成型性和抗扭疲劳耐久性。 使用的钢材具有含有C，Si，Al，1.01〜1.99％的Mn，0.041〜0.150％的Ti，0.017〜0.150％的Nb，P，S，N，和O的组成， Ti和Nb的含量为0.08％以上，C，Si和Al中的每一种的含量在适当范围内，P，S，N和O中的每一个的含量被调节至预定值，或 减。

公开(公告)号：US20050039576A1

公开(公告)日：2005-02-24

申请号：US10918887

申请日：2004-08-16

申请人： Shigeru Unami ,  Naomichi Nakamura ,  Satoshi Uenosono

发明人： Shigeru Unami ,  Naomichi Nakamura ,  Satoshi Uenosono

IPC分类号： C22C33/02 ,  C22C1/04

CPC分类号： C22C33/0207 ,  B22F2999/00 ,  B22F1/0003 ,  B22F1/0096

摘要： An alloy steel powder for powder metallurgy includes an iron-based powder containing about 0.5 mass percent or less of Mn as a prealloyed element and 0.2 to about 1.5 mass percent of Mo as a prealloyed element; and a Mo-containing alloy powder bonded on the surface of the iron-based powder by diffusion bonding. In the alloy steel powder for powder metallurgy, a Mo average content [MO]T (mass percent) satisfies formula 0.8≧[M]T—[Mo]P≧0.05, wherein the content [Mo]P is the above prealloyed Mo content (mass percent) in the iron-based powder.

摘要翻译： 用于粉末冶金的合金钢粉末包括含有作为预合金元素的Mn的约0.5质量％或更少的铁基粉末和作为预合金元素的0.2至约1.5质量％的Mo; 和通过扩散接合结合在铁基粉末的表面上的含Mo合金粉末。 在用于粉末冶金的合金钢粉末中，Mo平均含量[MO] T（质量百分比）满足公式0.8> = [M] T [Mo] P> = 0.05，其中[Mo] P为上述预合金 铁基粉末中的Mo含量（质量百分比）。

公开(公告)号：US20040187982A1

公开(公告)日：2004-09-30

申请号：US10807693

申请日：2004-03-24

申请人： JFE Steel Corporation, a corporation of Japan

发明人： Hiroshi Nakata ,  Nobuyuki Kageyama ,  Koji Iwata ,  Tetsuo Shimizu ,  Chikara Kami

IPC分类号： C21D009/52

CPC分类号： C22C38/02 ,  B23K35/3053 ,  C21D8/0205 ,  C21D8/105 ,  C21D9/50 ,  C21D9/52 ,  C21D2211/002 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16

摘要： A hot-rolled steel strip having superior low temperature toughness and weldability, which is suitably used as a starting material for high strength electric resistance welding pipe, is provided at a low cost without constructing new production facilities and increasing cost. The hot-rolled steel strip is low carbon steel containing at least one of about 0.5.% or less of Cu, about 0.5% or less of Ni, and about 0.5% or less of Mo, wherein Pcm represented by the following equation (1) is 0.17 or less: Pcmnull(% C)null(% Si)/30null((% Mn)null(% Cu))/20null(% Ni)/60null(% Mo)null7null(% V)/10 nullnullEquation (1), (where (% M) indicates the content of element M on a mass percent basis), and the balance includes Fe and incidental impurities. In addition, in the entire microstructure, the ratio of bainitic ferrite, which is a primary phase, is controlled to be about 95 percent by volume or more.

摘要翻译： 以低成本提供适合用作高强度电阻焊接管的起始材料的具有优异的低温韧性和焊接性的热轧钢带，而不需要构建新的生产设备并增加成本。 热轧钢带是含有Cu的0.5％以下，Ni约0.5％以下，Mo约0.5％以下中的至少一种的低碳钢，其中，Pcm为下述式（1 ）为0.17以下：Pcm =（％C）+（％Si）/ 30 +（（Mn％）+（％Cu））/ 20 +（％Ni）/ 60 + V）/ 10等式（1），（其中（％M）表示元素M的质量百分比的含量），余量包括Fe和杂质。 此外，在整个微观结构中，将作为主相的贝氏体铁素体的比例控制在约95体积％以上。

公开(公告)号：US20100282376A1

公开(公告)日：2010-11-11

申请号：US12294639

申请日：2007-02-26

申请人： Hideyuki Kimura ,  Takeshi Fujita ,  Nobuyuki Nakamura ,  Naoya Aoki ,  Masato Sasaki ,  Satoshi Ueoka ,  Shunji Iizuka

发明人： Hideyuki Kimura ,  Takeshi Fujita ,  Nobuyuki Nakamura ,  Naoya Aoki ,  Masato Sasaki ,  Satoshi Ueoka ,  Shunji Iizuka

IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/32

CPC分类号： B21B3/00 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04

摘要： An ultra soft high carbon hot-rolled steel sheet has excellent workability. The steel sheet is a high carbon hot-rolled steel sheet containing 0.2 to 0.7% C, and has a structure in which mean grain size of ferrite is 20 μm or larger, the volume percentage of ferrite grains having 10 μm or smaller size is 20% or less, mean diameter of carbide is in a range from 0.10 μm to smaller than 2.0 μm, the percentage of carbide grains having 5 or more of aspect ratio is 15% or less, and the contact ratio of carbide is 20% or less.

摘要翻译： 超柔软的高碳热轧钢板的加工性优异。 该钢板是含有0.2〜0.7％C的高碳热轧钢板，其铁素体的平均粒径为20μm以上的结构，具有10μm以下的铁素体晶粒的体积百分比为20 ％以下，碳化物的平均直径为0.10μm以上且小于2.0μm，纵横比为5以上的碳化物的比例为15％以下，碳化物的接触率为20％以下 。

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：US20080190520A1

公开(公告)日：2008-08-14

申请号：US11664324

申请日：2005-11-07

申请人： Makoto Watanabe ,  Hiroaki Toda ,  Mineo Muraki

发明人： Makoto Watanabe ,  Hiroaki Toda ,  Mineo Muraki

IPC分类号： C21D1/26 ,  C22C38/00

CPC分类号： C21D8/12 ,  C21D8/1272 ,  C21D8/1283 ,  C21D8/1288 ,  C21D2201/05 ,  C23C22/18 ,  C23C22/188 ,  C23C22/74 ,  C23C26/00 ,  C23C28/042 ,  H01F1/14783

摘要： In a grain-oriented electrical steel sheet having phosphate-based coatings, which contain no chromium and which impart a tension, on the surfaces of a steel sheet with ceramic underlying films therebetween, the coating amount of oxygen in the underlying film is 2.0 g/m2 or more and 3.5 g/m2 or less relative to both surfaces of the steel sheet. Consequently, a grain-oriented electrical steel sheet with a chromium-less coating is provided. The resulting steel sheet has coating properties at the same level as those of a steel sheet with chromium-containing coatings and realizes high hygroscopicity resistance and a low iron loss without variations.

摘要翻译： 在其间具有陶瓷底层的钢板的表面上，在不含铬并赋予张力的磷酸盐系涂层的方向性电磁钢板中，下层膜中的氧的涂布量为2.0g / 相对于钢板的两个表面，m 2以上且3.5g / m 2以下。 因此，提供了具有无铬涂层的晶粒取向电工钢板。 得到的钢板具有与含铬涂层的钢板相同的涂层性能，并且实现了高吸湿性和低铁损，而没有变化。

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。

公开(公告)号：US20050016644A1

公开(公告)日：2005-01-27

申请号：US10903747

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 ,  C21D8/00

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.

公开(公告)号：US20040094240A1

公开(公告)日：2004-05-20

申请号：US10714987

申请日：2003-11-17

申请人： JFE Steel Corporation, a corporation of Japan

发明人： Yoshihiro Yazawa ,  Mineo Muraki ,  Yoshihiro Ozaki ,  Kunio Fukuda ,  Atsushi Miyazaki ,  Yasushi Katoh

IPC分类号： C22C038/50 ,  C22C038/28

CPC分类号： C22C38/48 ,  C10M105/24 ,  C10M107/04 ,  C10M107/28 ,  C10M111/04 ,  C10M2205/0225 ,  C10M2207/1253 ,  C10M2209/0845 ,  C10N2210/02 ,  C10N2250/14 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0278 ,  C22C38/001 ,  C22C38/004 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50

摘要： A ferritic stainless steel sheet for fuel tanks and fuel pipes comprises, by mass percent, about 0.1% or less of C; about 1.0% or less of Si; about 1.5% or less of Mn; about 0.06% or less of P; about 0.03% or less of S; about 1.0% or less of Al; about 11% to about 20% Cr; about 2.0% or less of Ni; about 0.5% to about 3.0% Mo; about 0.02% to about 1.0% V; about 0.04% or less of N; at least one of about 0.01% to about 0.8% Nb and about 0.01% to about 1.0% Ti; and the balance being Fe and incidental impurities. The ferritic stainless steel sheet is produced by rough-rolling a slab having the above composition; hot-rolling the rough-rolled sheet under a linear pressure of at least about 3.5 MN/m at a final pass in the finish rolling; cold-rolling the hot-rolled sheet at a gross reduction rate of at least about 75%; and annealing the cold-rolled sheet. The cold-rolling step includes one rolling stage or at least two rolling stages including intermediate annealing.

摘要翻译： 用于燃料箱和燃料管的铁素体不锈钢板以质量％计含有C的约0.1％以下; 约1.0％以下的Si; 约1.5％以下的Mn; 约0.06％以下的P; 约0.03％以下的S; 约1.0％以下的Al; 约11％至约20％的Cr; 约2.0％以下的Ni; 约0.5％至约3.0％的Mo; 约0.02％至约1.0％V; 约0.04％以下的N; 约0.01％至约0.8％的Nb和约0.01％至约1.0％的Ti中的至少一种; 余量为Fe和杂质。 铁素体不锈钢板通过粗轧具有上述组成的板坯来制造; 在最终轧制过程中，在至少约3.5MN / m的线压力下热轧粗轧板; 以大约75％的总减速率冷轧热轧板; 并对冷轧板退火。 冷轧步骤包括一个轧制阶段或至少两个包括中间退火的轧制阶段。

公开(公告)号：US20030219617A1

公开(公告)日：2003-11-27

申请号：US10435187

申请日：2003-05-09

申请人： JFE Steel Corporation, a corporation of Japan

发明人： Yukiko Ozaki ,  Shigeru Unami ,  Satoshi Uenosono

IPC分类号： B32B015/02 ,  C22C001/05 ,  B22F001/02

CPC分类号： B22F1/0062 ,  B22F1/0059 ,  B22F1/0077 ,  B22F1/0096 ,  B22F2003/023 ,  B22F2998/00 ,  B22F2999/00 ,  C22C33/0207 ,  Y10T428/12049 ,  Y10T428/12181 ,  Y10T428/2998 ,  B22F1/02

摘要： The surface of the body of powder additive for use in powder metallurgy is coated with an organic binder, thereby obtaining powder additive to cause adhesion of the powder additive to the surface of iron-based powder by the organic binder, thereby providing a powder additive with no segregation of components and excellent flowability and compression, and an iron-based powder mixture manufactured by mixing the powder additive and the iron-based powder.

摘要翻译： 用于粉末冶金的粉末添加剂体的表面涂有有机粘合剂，从而得到粉末添加剂，以通过有机粘合剂将粉末添加剂粘附到铁基粉末的表面，从而提供粉末添加剂 组分偏析和优异的流动性和压缩性，以及通过混合粉末添加剂和铁基粉末制备的铁基粉末混合物。