公开(公告)号：US20040261920A1

公开(公告)日：2004-12-30

申请号：US10655288

申请日：2003-09-04

申请人： Kawasaki Steel Corporation, a corporation of Japan

发明人： Chikara Kami ,  Akio Tosaka ,  Takuya Yamazaki

IPC分类号： C21D008/00

CPC分类号： C21D8/0436 ,  C21D1/185 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D8/0426 ,  C21D8/0473 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  Y10T428/12493 ,  Y10T428/12799

摘要： An object of the present invention is to provide a cold-rolled steel sheet and an alloyed hot-dip galvanized steel sheet in which tensile strength is effectively increased by press forming and heat treatment while maintaining excellent deep drawability in press forming. Specifically, a steel composition contains less than 0.01% of C, 0.005 to 1.0% of Si, 0.01 to 1.0% of Mn, 0.005 to 0.050% of Nb, 0.005 to 0.030% of Al, 0.005 to 0.040% of N 0.0005 to 0.0015% of B, 0.05% or less of P, and 0.01% or less of S, the balance substantially composed of Fe, in which the following equations (1) and (2) are satisfied: N %null0.00-15null4/93nullNb %null14/27nullAl %null14/11nullB %nullnull(1) C %null(12/93)nullNb %nullnull(2)

摘要翻译： 本发明的目的是提供一种冷压钢板和合金化的热浸镀锌钢板，其中通过冲压成形和热处理有效地提高了拉伸强度，同时保持了冲压成形时的优异的深冲性。 具体地说，钢组成包含小于0.01％的C，0.005〜1.0％的Si，0.01〜1.0％的Mn，0.005〜0.050％的Nb，0.005〜0.030％的Al，0.005〜0.040％的N，0.0005〜0.0015 B的百分比，P的0.05％以下，S的0.01％以下，余量基本上由Fe组成，其中满足以下等式（1）和（2）：N％> = 0.00-15 + 4 /93.Nb％+ 14 / 27.Al％+ 14 / 11.B％（1）C％<=（12/93）.Nb％（2）

公开(公告)号：US20040108024A1

公开(公告)日：2004-06-10

申请号：US10428571

申请日：2003-05-02

申请人： Kawasaki Steel Corporation, a corporation of Japan

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

IPC分类号： C22C038/16

CPC分类号： C22C38/16 ,  C21D1/185 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D8/0278 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C23C2/02 ,  C23C2/06 ,  C23C2/40 ,  Y10T428/12799

摘要： The present invention provides a steel sheet having a chemical composition comprising 0.15% or less C, 2.0% or less Si, 3.0% or less Mn, P, S, Al and N in adjusted amounts, from 0.5 to 3.0% Cu, or one or more of Cr, Mo and W in a total amount of 2.0% or less, and having a composite structure comprising ferrite and martensite having an area ratio of 2% or more. The steel sheet is in the form of a high-strength hot-rolled steel sheet, a high-strength cold-rolled steel sheet, or a hot-dip galvanized steel sheet. There is thus available a steel sheet excellent in press-formability and in strain age hardening property as represented by a nullTS of 80 MPa or more.

摘要翻译： 本发明提供一种钢板，其特征在于，含有0.15％以下的C，2.0％以下的Si，3.0％以下的Mn，P，S，Al，N以及0.5〜3.0％的Cu， 或更多的Cr，Mo和W的总量为2.0％以下，并且具有包含面积比为2％以上的铁素体和马氏体的复合结构。 钢板为高强度热轧钢板，高强度冷轧钢板或热浸镀锌钢板的形式。 因此可获得如DeltaTS为80MPa以上的压制成形性和应变时效硬化性优异的钢板。

公开(公告)号：US20030221753A1

公开(公告)日：2003-12-04

申请号：US10420759

申请日：2003-04-23

申请人： KAWASAKI STEEL CORPORATION

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

IPC分类号： C21D009/08

CPC分类号： C21D8/10 ,  C21D2201/00

摘要： A steel pipe containing fine ferrite crystal grains, which has excellent toughness and ductility and good ductility-strength balance as well as superior collision impact resistance, and a method for producing the same are provided. A steel pipe containing super-fine crystal grains can be produced by heating a base steel pipe having ferrite grains with an average crystal diameter of di (nullm), in which C, Si, Mn and Al are limited within proper ranges, and if necessary, Cu, Ni, Cr and Mo, or Nb, Ti, V, B, etc. are further added, at not higher than the Ac3 transformation point, and applying reducing at an average rolling temperature of nullm (null C.) and a total reduction ratio Tred (%) within s temperature range of from 400 to Ac3 transformation point, with di, nullm and Tred being in a relation satisfying a prescribed equation.

摘要翻译： 提供了具有优异的韧性和延展性以及良好的延展性 - 强度平衡以及优异的抗冲击冲击性的细铁素体晶粒的钢管及其制造方法。 含有超细晶粒的钢管可以通过加热具有平均晶体直径为二（母）的铁素体晶粒的基础钢管，其中C，Si，Mn和Al被限制在适当的范围内，如果需要 进一步添加Cu，Ni，Cr和Mo，或Nb，Ti，V，B等，不高于Ac 3相变点，并以平均轧制温度（℃）和 总减速比Tred（％）在400〜Ac3相变点的s温度范围内，di，tt和tred处于满足规定方程的关系。

公开(公告)号：US20030201263A1

公开(公告)日：2003-10-30

申请号：US10428919

申请日：2003-05-05

申请人： KAWASAKI STEEL CORPORATION ,  NATIONAL RESEARCH INSTITUTE FOR METALS

发明人： Yasushi Morikage ,  Takahiro Kubo ,  Koich Yasuda ,  Keniti Amano ,  Kazuo Hiraoka ,  Akihiko Ohta ,  Chiaki Shiga

IPC分类号： C22C038/00 ,  B23K009/00

CPC分类号： C22C38/02 ,  B23K35/3086 ,  C22C38/04 ,  C22C38/44 ,  Y10T428/12493

摘要： In the present invention, an iron based alloy which contains by mass %: 0.20% or less of C; 6.0 to 16.0% of Cr; 6.0 to 16.0% of Ni and whose martensitic transformation starting temperature (Ms point temperature) is in the range of 0-170null C., inclusive of 0null C. and exclusive of 170null C., is used as a welding material. With respect to a weld metal, the weld metal has a iron alloy composition which contains by mass %: 0.20% or less of C; 3.0 to 13.0% of Cr; 3.0 to 13.0% of Ni and whose martensitic transformation starting temperature (Ms point temperature) is in the range of 50-360null C., inclusive of both 50null C. and 360null C.

摘要翻译： 在本发明中，以质量％计含有C：0.20％以下的铁基合金， 6.0〜16.0％的Cr; 6.0〜16.0％的Ni，其马氏体相变开始温度（Ms点温度）在0〜170℃的范围内，包括0℃，不包括170℃作为焊接材料。 对于焊接金属，焊接金属具有质量％：0.20％以下的C的铁合金组成， 3.0〜13.0％的Cr; 3.0〜13.0％的Ni，其马氏体相变开始温度（Ms点温度）在50〜360℃的范围内，包括50℃和360℃。

公开(公告)号：US20030201038A1

公开(公告)日：2003-10-30

申请号：US10428881

申请日：2003-05-02

申请人： Kawasaki Steel Corporation, a Corporation of Japan

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

IPC分类号： C22C038/16

CPC分类号： C22C38/16 ,  C21D1/185 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D8/0278 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C23C2/02 ,  C23C2/06 ,  C23C2/40 ,  Y10T428/12799

摘要： The present invention provides a steel sheet having a chemical composition comprising 0.15% or less C, 2.0% or less Si, 3.0% or less Mn, P, S, Al and N in adjusted amounts, from 0.5 to 3.0% Cu, or one or more of Cr, Mo and W in a total amount of 2.0% or less, and having a composite structure comprising ferrite and martensite having an area ratio of 2% or more. The steel sheet is in the form of a high-strength hot-rolled steel sheet, a high-strength cold-rolled steel sheet, or a hot-dip galvanized steel sheet. There is thus available a steel sheet excellent in press-formability and in strain age hardening property as represented by a nullTS of 80 MPa or more.

摘要翻译： 本发明提供一种钢板，其特征在于，含有0.15％以下的C，2.0％以下的Si，3.0％以下的Mn，P，S，Al，N以及0.5〜3.0％的Cu， 或更多的Cr，Mo和W的总量为2.0％以下，并且具有包含面积比为2％以上的铁素体和马氏体的复合结构。 钢板为高强度热轧钢板，高强度冷轧钢板或热浸镀锌钢板的形式。 因此可获得如DeltaTS为80MPa以上的压制成形性和应变时效硬化性优异的钢板。

公开(公告)号：US20030145920A1

公开(公告)日：2003-08-07

申请号：US10341166

申请日：2003-01-13

申请人： Kawasaki Steel Corporation

发明人： Chikara Kami ,  Akio Tosaka ,  Kazunori Osawa ,  Shinjiro Kaneko ,  Takuya Yamazaki ,  Kaneharu Okuda ,  Takashi Ishikawa

IPC分类号： C21D008/00

CPC分类号： C21D8/0236 ,  C21D8/0226 ,  C21D8/0268 ,  C21D8/0273 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/38

摘要： The present invention presents a high tensile strength cold rolled steel sheet having excellent formability, impact resistance and strain age hardening characteristics, and the production thereof. As a specific means, a slab having a composition which contains, by mass %, 0.15% or less of C, 0.02% or less of Al, and 0.0050 to 0.0250% of N at N/Al of 0.3 or higher, and has N in a solid solution state at 0.0010% or more, is first hot rolled at the finish rolling delivery-side temperature of 800null C. or above, and is subsequently coiled at the coiling temperature of 750null C. or below to prepare a hot rolled plate. Then, after cold rolling, the hot rolled plate is continuously cooled at a temperature from the recrystallization temperature to 900null C. at a holding time of 10 to 120 seconds, and is cooled by primary cooling in which the hot rolled plate is cooled to 500null C. or below at a cooling rate of 10 to 300null C./s, and furthermore if necessary, by secondary cooling in which a residence time is 300 seconds or less in a temperature range of the primary cooling stopping temperature or higher and 350null C. or higher. Provided is a steel sheet containing a ferritic phase having an average crystal grain size of 10 nullm or less at an area ratio of 50% or more, and if necessary, a martensitic phase at an area ratio of 3% or more as a second phase.

公开(公告)号：US20030116236A1

公开(公告)日：2003-06-26

申请号：US10202117

申请日：2002-07-23

申请人： KAWASAKI STEEL CORPORATION

发明人： Yasuyuki Hayakawa ,  Hideo Yamagami ,  Seiji Okabe ,  Takeshi Imamura ,  Minoru Takashima ,  Mitsumasa Kurosawa

IPC分类号： C21D001/00 ,  C23C008/06

CPC分类号： C22C38/60 ,  C21D8/1233 ,  C21D8/125 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C22C38/004 ,  C22C38/02

摘要： A method of manufacturing a grain-oriented steel sheet including hot-rolling a slab prepared using molten steel containing, by mass %, C of not more than about 0.08%, Si of about 2.0 to about 8.0% and Mn of about 0.005 to about 3.0%; optionally annealing the hot-rolled steel sheet; performing cold rolling once, or twice or more with intermediate annealing therebetween; performing primary recrystallization annealing in a low- or non-oxidizative atmosphere and adjusting the C content in the steel sheet after primary recrystallization annealing to be held in the range of about 0.005 to about 0.025 mass %; performing secondary recrystallization annealing; decarburization annealing; and, preferably, performing additional high-temperature continuous or batch annealing. A grain-oriented electrical steel sheet having a sufficiently high magnetic flux density and a low iron loss can be advantageously obtained even when it is manufactured without using an inhibitor.

摘要翻译： 一种制造含有热轧钢板的方法，该方法包括以质量％计含有不大于约0.08％的Si，约2.0至约8.0％的Si和约0.005至约 3.0％; 任选地退火热轧钢板; 在其间进行中间退火，进行一次或两次以上的冷轧; 在低或非氧化性气氛中进行一次再结晶退火，并将一次再结晶退火后的钢板中的C含量调整为约0.005〜约0.025质量％的范围; 进行二次再结晶退火; 脱碳退火; 并且优选进行附加的高温连续或间歇退火。 即使在不使用抑制剂的情况下制造也可以有利地获得具有足够高的磁通密度和低铁损的晶粒取向电工钢板。

公开(公告)号：US20030077448A1

公开(公告)日：2003-04-24

申请号：US10101735

申请日：2002-03-21

申请人： KAWASAKI STEEL CORPORATION

发明人： Masateru Ueta ,  Naomichi Nakamura ,  Satoshi Uenosono

IPC分类号： B22F007/00 ,  B32B027/02 ,  B05D007/00 ,  B32B009/00

CPC分类号： H01F1/26 ,  H01F1/24 ,  H01F41/0246 ,  H01F41/16 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995

摘要： An iron-based powder including a heat-resistant insulate coating and a powder core are suggested. A paint containing silicone resin and pigment is added to a raw material powder primarily containing a ferromagnetic metal, especially, iron, agitation and mixing are performed and, thereafter, a drying treatment is performed so as to form a coating containing silicone resin and pigment on the surface of the iron-based powder. The ratio of the silicone resin content to the pigment content in the coating is preferably 0.01 or more, but less than 4.0 on a mass basis. The pigment is preferably at least one selected from the group consisting of metal oxides, metal nitrides, metal carbides, minerals, and glass. The paint may be sprayed to the iron-based powder in a fluidized state. A coating containing at least one of Si compounds, Ti compounds, Zr compounds, P compounds, and Cr compounds may be formed as a lower layer of the aforementioned coating.

摘要翻译： 提出了包含耐热绝缘涂层和粉末芯的铁基粉末。 将含有硅树脂和颜料的涂料加入到主要含有铁磁性金属的原料粉末中，特别是铁，搅拌和混合，然后进行干燥处理，以形成含有有机硅树脂和颜料的涂层 铁基粉末的表面。 硅酮树脂含量与涂料中颜料含量的比率优选为0.01以上，以质量计小于4.0。 颜料优选为选自金属氧化物，金属氮化物，金属碳化物，矿物质和玻璃中的至少一种。 油漆可以以流化状态喷涂到铁基粉末上。 可以形成包含Si化合物，Ti化合物，Zr化合物，P化合物和Cr化合物中的至少一种的涂层作为上述涂层的下层。

公开(公告)号：US20030062101A1

公开(公告)日：2003-04-03

申请号：US10236907

申请日：2002-09-09

申请人： KAWASAKI STEEL CORPORATION

发明人： Tatsumi Kimura ,  Kazuhiko Shiotani ,  Fumimaru Kawabata ,  Keniti Amano

IPC分类号： C21D008/00

CPC分类号： C22C38/42 ,  C22C38/002 ,  C22C38/004 ,  C22C38/04 ,  C22C38/08 ,  C22C38/16 ,  C22C38/20 ,  C22C38/32 ,  C22C38/38 ,  C22C38/52 ,  C22C38/54

摘要： A steel material excellent in weathering resistance by defining the chemical ingredients in the steel each to a predetermined range and setting an ingredient parameter formula in accordance with the working circumstance thereby reducing the flow rust and, particularly, forming stable rust with good protective property even in a salty circumstance such as in coast districts is provided. Further, also considering the amount of A type inclusions and B type inclusions according to JIS G 0555, a steel material of excellent earthquake proofness and weathering proofness also including weld heat affect zone is provided.

摘要翻译： 通过将钢中的化学成分定义为规定范围，设定成为根据工作环境的成分参数公式的耐候性优异的钢材，由此减少流动锈，特别是即使在 提供海岸地区等咸况。 此外，还考虑到根据JIS G 0555的A型夹杂物和B型夹杂物的量，还提供了具有优异的抗震性和耐候性的钢材料，其也包括焊接热影响区域。

公开(公告)号：US20030024606A1

公开(公告)日：2003-02-06

申请号：US10140207

申请日：2002-05-08

申请人： KAWASAKI STEEL CORPORATION

发明人： Yasuyuki Hayakawa ,  Mitsumasa Kurosawa ,  Masaki Kawano ,  Michiro Komatsubara ,  Yuka Komori ,  Kazuaki Tamura

IPC分类号： H01F001/147

CPC分类号： C21D8/1261 ,  C21D8/1233 ,  H01F1/14775

摘要： Non-oriented magnetic steel sheets, which are mainly used as materials for iron cores for use in electric apparatuses, have a low iron loss and a high magnetic flux density at the same time. The non-oriented magnetic steel sheet comprises from about 1.5 to about 8.0 weight % Si, from about 0.005 to about 2.50 weight % Mn, and not more than about 50 ppm each of C, S, N, O, and B, in which a crystal orientation parameter is 0.200 or less. In addition, the average crystal grain diameter is preferably from about 50 to about 500 nullm, and an areal ratio of crystal grains on a surface of the steel sheet is preferably 20% and less, in which crystal plane orientations of the crystal grains are within 15null from the axis. In addition, the non-oriented magnetic steel sheet preferably contains small amounts of elements such as Al, Sb, Ni, Sn, Cu, P, and Cr. The manufacturing method for the non-oriented magnetic steel is also described.