公开(公告)号：US08828154B2

公开(公告)日：2014-09-09

申请号：US11887285

申请日：2006-03-29

申请人： Toru Hoshi ,  Saiji Matsuoka

发明人： Toru Hoshi ,  Saiji Matsuoka

IPC分类号： C22C38/00 ,  C21D8/00 ,  C22C38/04 ,  C22C38/12 ,  C22C38/02 ,  C22C38/06 ,  C21D8/02

CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D8/0247 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

摘要： A steel sheet contains, in terms of percent by mass, C: 0.01 to 0.2%, Si: 2.0% or less, and Mn: 3.0% or less and has a martensite phase as dominant phase and ferrite with a grain size of 20 μm or less as a second phase. The ferrite is contained in area ratio of 1% to 30% and the amount of solute carbon being 0.01 percent by mass of more. The steel sheet can provide a hot-rolled steel sheet suitable for automobile steel sheet, i.e., has excellent press workability and excellent strain aging property whereby the tensile strength significantly increases by heat treatment at about the same temperature as typical baking process after the press-working. Moreover, hardening of the ferrite phase improves the fatigue strength after the strain aging.

摘要翻译： 钢板以质量％计含有C：0.01〜0.2％，Si：2.0％以下，Mn：3.0％以下，马氏体相为主相，粒径为20μm的铁素体 或更少作为第二阶段。 铁素体的含有率为1％〜30％，溶质碳的量为0.01质量％以上。 钢板可以提供适用于汽车钢板的热轧钢板，即具有优异的冲压加工性和优异的应变时效性，由此通过在与压制后的典型的烘烤工艺大约相同的温度下的热处理显着地增加拉伸强度， 加工。 此外，铁素体相的硬化提高了应变时效后的疲劳强度。

公开(公告)号：US20090252641A1

公开(公告)日：2009-10-08

申请号：US11887285

申请日：2006-03-29

申请人： Toru Hoshi ,  Saiji Matsuoka

发明人： Toru Hoshi ,  Saiji Matsuoka

IPC分类号： C22C38/12 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00 ,  C22C38/14 ,  C21D8/02

CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D8/0247 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

摘要： A steel sheet contains, in terms of percent by mass, C: 0.01 to 0.2%, Si: 2.0% or less, and Mn: 3.0% or less and has a martensite phase as dominant phase and ferrite with a grain size of 20 μm or less as a second phase. The ferrite is contained in area ratio of 1% to 30% and the amount of solute carbon being 0.01 percent by mass of more. The steel sheet can provide a hot-rolled steel sheet suitable for automobile steel sheet, i.e., has excellent press workability and excellent strain aging property whereby the tensile strength significantly increases by heat treatment at about the same temperature as typical baking process after the press-working. Moreover, hardening of the ferrite phase improves the fatigue strength after the strain aging.

摘要翻译： 钢板以质量％计含有：C：0.01〜0.2％，Si：2.0％以下，Mn：3.0％以下，马氏体相为主相，粒径为20μm的铁素体 或更少作为第二阶段。 铁素体的含有率为1％〜30％，溶质碳的量为0.01质量％以上。 钢板可以提供适用于汽车钢板的热轧钢板，即具有优异的冲压加工性和优异的应变时效性，由此通过在与压制后的典型的烘烤工艺大约相同的温度下的热处理显着地增加拉伸强度， 加工。 此外，铁素体相的硬化提高了应变时效后的疲劳强度。

公开(公告)号：US08430975B2

公开(公告)日：2013-04-30

申请号：US12864586

申请日：2009-01-19

申请人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Yoshitsugu Suzuki

发明人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Yoshitsugu Suzuki

IPC分类号： C22C38/02 ,  C22C38/06 ,  B32B15/18

CPC分类号： C21D8/0263 ,  C21D1/25 ,  C21D8/0436 ,  C21D8/0447 ,  C21D9/48 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/38 ,  C23C2/02 ,  Y10T428/12799

摘要： A high-strength galvanized steel sheet has a TS of at least 590 MPa and excellent ductility and stretch flangeability and a method for manufacturing the high-strength galvanized steel sheet. The galvanized steel sheet contains, on the basis of mass percent, C: 0.05% to 0.3%, Si: 0.01% to 2.5%, Mn: 0.5% to 3.5%, P: 0.003% to 0.100% or less, S: 0.02% or less, and Al: 0.010% to 1.5%. The total of Si and Al is 0.5% to 2.5%. The remainder are iron and incidental impurities, contain 20% or more of ferrite phase, 10% or less of martensite phase, and 10% to 60% of tempered martensite, on the basis of area percent, and 3% to 10% of retained austenite phase on the basis of volume fraction. The retained austenite has an average grain size of 2.0 μm or less.

摘要翻译： 高强度镀锌钢板的TS为至少590MPa，延展性和拉伸凸缘性优异，高强度镀锌钢板的制造方法。 镀锌钢板以质量％计含有C：0.05〜0.3％，Si：0.01〜2.5％，Mn：0.5〜3.5％，P：0.003〜0.100％以下，S：0.02 ％以下，Al：0.010〜1.5％。 Si和Al的总和为0.5％至2.5％。 剩余部分为铁和杂质，基于面积百分比含有20％以上的铁素体相，10％以下的马氏体相和10％〜60％的回火马氏体，3％〜10％的保留 基于体积分数的奥氏体相。 残留奥氏体的平均粒径为2.0μm以下。

公开(公告)号：US20110036465A1

公开(公告)日：2011-02-17

申请号：US12866481

申请日：2009-02-05

申请人： Yoshiyasu Kawasaki ,  Tatsuya Nakagaito ,  Shinjiro Kaneko ,  Saiji Matsuoka

发明人： Yoshiyasu Kawasaki ,  Tatsuya Nakagaito ,  Shinjiro Kaneko ,  Saiji Matsuoka

IPC分类号： C23C2/28 ,  B32B15/01 ,  B32B15/18

CPC分类号： C23C28/023 ,  C21D8/0205 ,  C21D8/0405 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C22C38/38 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  Y10T428/12799

摘要： A high strength galvanized steel sheet has a TS of 590 MPa or more and excellent processability. The component composition contains, by mass %, C: 0.05% to 0.3%, Si: 0.7% to 2.7%, Mn: 0.5% to 2.8%, P: 0.1% or lower, S: 0.01% or lower, Al: 0.1% or lower, and N: 0.008% or lower, and the balance: Fe or inevitable impurities. The microstructure contains, in terms of area ratio, ferrite phases: 30% to 90%, bainite phases: 3% to 30%, and martensite phases: 5% to 40%, in which, among the martensite phases, martensite phases having an aspect ratio of 3 or more are present in a proportion of 30% or more.

摘要翻译： 高强度镀锌钢板的TS为590MPa以上，加工性优异。 组分组成以质量％计含有C：0.05％至0.3％，Si：0.7％至2.7％，Mn：0.5％至2.8％，P：0.1％或更低，S：0.01％或更低，Al：0.1 ％以下，N：0.008％以下，余量为Fe或不可避免的杂质。 微观结构以面积比计含有铁素体相：30％〜90％，贝氏体相：3％〜30％，马氏体相：5％〜40％，其中，在马氏体相中，马氏体相具有 3以上的纵横比以30％以上的比例存在。

公开(公告)号：US20100314009A1

公开(公告)日：2010-12-16

申请号：US12864766

申请日：2008-12-12

申请人： Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Saiji Matsuoka ,  Yoshitsugu Suzuki ,  Koji Maitake

发明人： Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Saiji Matsuoka ,  Yoshitsugu Suzuki ,  Koji Maitake

IPC分类号： C23C2/28 ,  B32B15/18

CPC分类号： C23C2/06 ,  B32B15/013 ,  C21D9/48 ,  C22C18/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/02 ,  C23C2/28 ,  Y10T428/12799

摘要： A high strength galvanized steel sheet having a TS of 780 MPa or more and exhibiting excellent stretch frangeability and bendability and a method for manufacturing the same are provided. The component composition contains C: 0.05% to 0.15%, Si: 0.8% to 2.5%, Mn: 1.5% to 3.0%, P: 0.001% to 0.05%, S: 0.0001% to 0.01%, Al: 0.001% to 0.1%, N: 0.0005% to 0.01%, Cr: 0.1% to 1.0%, Ti: 0.0005% to 0.1%, B: 0.0003% to 0.003%, and the remainder composed of iron and incidental impurities, on a percent by mass basis. The microstructure includes 30% or more of ferrite phase and 30% or more, and 70% or less of martensite phase on an areal fraction basis, wherein regarding the above-described martensite phase, the proportion of a tempered martensite phase is 20% or more relative to the whole martensite phase and the proportion of a martensite phase having a grain diameter of 1 μm or less is 10% or less relative to the whole martensite phase.

摘要翻译： 提供TS为780MPa以上且具有优异的伸缩性和弯曲性的高强度镀锌钢板及其制造方法。 组分组成包含C：0.05％至0.15％，Si：0.8％至2.5％，Mn：1.5％至3.0％，P：0.001％至0.05％，S：0.0001％至0.01％，Al：0.001％至0.1 ％，N：0.0005〜0.01％，Cr：0.1〜1.0％，Ti：0.0005〜0.1％，B：0.0003〜0.003％，余量由铁和杂质构成 。 微结构包含30％以上的铁素体相，30％以上，70％以下的马氏体相，其中，对于上述马氏体相，回火马氏体相的比例为20％， 更相对于整个马氏体相，并且相对于整个马氏体相，具有1μm以下的粒径的马氏体相的比例为10％以下。

公开(公告)号：US06331216B1

公开(公告)日：2001-12-18

申请号：US09214226

申请日：1998-12-30

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

发明人： 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分类号： C21D713

CPC分类号： C21D8/10 ,  C21D2201/00 ,  C21D2211/005

摘要： 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.

摘要翻译： 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：US4973367A

公开(公告)日：1990-11-27

申请号：US454923

申请日：1989-12-22

申请人： Saiji Matsuoka ,  Susumu Satoh ,  Toshiyuki Katoh ,  Hideo Abe ,  Ikuo Yarita

发明人： Saiji Matsuoka ,  Susumu Satoh ,  Toshiyuki Katoh ,  Hideo Abe ,  Ikuo Yarita

IPC分类号： C21D8/04

CPC分类号： C21D8/0426 ,  C21D8/0431 ,  C21D8/0463 ,  C21D8/0478

摘要： A method of manufacturing a steel sheet having excellent deep-drawability. A steel blank is rolled into a steel sheet having a predetermined thickness. The steel contains C: not more than 0.008 wt %, Si: not more than 0.5 wt %, Mn: not more than 1.0 wt %, P: not more than 0.15 wt %, S: not more than 0.02 wt %, Al: 0.010 to 0.10 wt %, N: not more than 0.008 wt %, and at least one element selected from the group consisting of Ti and Nb which is contained in an amount satisfying the relationship of 1.2 (C/12+N/14).ltoreq.(Ti/48+Nb/93). In at least one pass, rolling is conducted within a temperatures range lower than the Ar3 transformation point but not lower than 500.degree. C., in such a manner that the roll radius R (mm) and the blank thickness t (mm) before rolling by rolls satisfy the relationships of R.ltoreq.200 and R.sup.2 .times..sqroot.t.ltoreq.100000, and the total rolling reduction at temperature lower than the Ar3 transformation point is not lower than 60%. The hot-rolled steel sheet possesses a high level of Lankford value, and is free from cold-working embrittlement. The method may include the step of obtaining, after the rolling, pickling, annealing and hot dip galvanizing under certain conditions, a surface-treated steel sheet having excellent deep-drawability.

公开(公告)号：US4861390A

公开(公告)日：1989-08-29

申请号：US835052

申请日：1986-02-28

申请人： Susumu Satoh ,  Saiji Matsuoka ,  Takashi Obara ,  Kozo Tsunoyama ,  Toshio Irie

发明人： Susumu Satoh ,  Saiji Matsuoka ,  Takashi Obara ,  Kozo Tsunoyama ,  Toshio Irie

IPC分类号： C21D8/04

CPC分类号： C21D8/0426 ,  B21B2201/04 ,  C21D8/0431 ,  C21D8/0463 ,  C21D8/0478

摘要： A method of manufacturing formable as-rolled thin steel sheets having excellent ridging resistance and other properties is disclosed, which comprises rolling a low carbon steel to a given thickness without cold rolling and recrystallization annealing steps. In this rolling, at least one rolling pass is carried out within a given temperature range at high draft and high strain rate.

摘要翻译： 公开了一种制造具有优异的抗皱性等特性的可成形的轧制薄钢板的方法，其包括在不进行冷轧和再退火退火步骤的情况下将低碳钢轧制至给定厚度。 在该轧制中，在给定的温度范围内，在高吃水和高应变率下进行至少一个轧制道次。

公开(公告)号：US4793401A

公开(公告)日：1988-12-27

申请号：US939543

申请日：1986-12-09

申请人： Saiji Matsuoka ,  Susumu Satoh ,  Takashi Obara ,  Kozo Tsunoyama ,  Hideo Abe

发明人： Saiji Matsuoka ,  Susumu Satoh ,  Takashi Obara ,  Kozo Tsunoyama ,  Hideo Abe

IPC分类号： B21B1/28 ,  B21B1/34 ,  B21B1/40 ,  B21B1/46 ,  B21B9/00 ,  C21D8/02 ,  B21B13/22 ,  B22D11/12

CPC分类号： B21B1/46 ,  B21B1/28 ,  B21B1/34 ,  C21D8/0226 ,  B21B1/40 ,  B21B2201/04 ,  B21B2261/20 ,  B21B2275/06 ,  B21B9/00 ,  C21D8/0231 ,  C21D8/0263 ,  Y10T29/49991

摘要： Thin steel sheets having an improved processability are produced when a steel sheet or cast strip obtained through a continuous casting or strip caster process is subjected to a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min. By this method, the cold rolling step or cold rolling-annealing step can be omitted.

摘要翻译： 当通过连续铸造或连续铸造法得到的钢板或铸钢带在Ar 3相变点至300℃的温度下进行润滑轧制步骤时，生产具有改善加工性能的薄钢板，并且轧制速度 不低于1500米/分。 通过该方法，可以省略冷轧工序或冷轧退火工序。

公开(公告)号：US09011614B2

公开(公告)日：2015-04-21

申请号：US12866469

申请日：2009-01-28

申请人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Yoshitsugu Suzuki ,  Yuki Toji

发明人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Yoshitsugu Suzuki ,  Yuki Toji

IPC分类号： C22C38/00 ,  C22C38/08 ,  C22C38/18 ,  C23C2/02 ,  C22C38/02 ,  C21D1/25 ,  C21D6/00 ,  C21D8/04 ,  C22C38/04 ,  C22C38/06

CPC分类号： C22C38/02 ,  C21D1/25 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0463 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  Y10T428/12799

摘要： A high-strength galvanized steel sheet has excellent mechanical properties such as a TS of 1200 MPa or more, an El of 13% or more, and a hole expansion ratio of 50% or more and a method for manufacturing the same. A high-strength galvanized steel sheet excellent in formability contains 0.05% to 0.5% C, 0.01% to 2.5% Si, 0.5% to 3.5% Mn, 0.003% to 0.100% P, 0.02% or less S, and 0.010% to 0.5% Al on a mass basis, the remainder being Fe and unavoidable impurities, and has a microstructure which contains 0% to 10% ferrite, 0% to 10% martensite, and 60% to 95% tempered martensite on an area basis as determined by structure observation and which further contains 5% to 20% retained austenite as determined by X-ray diffractometry.

摘要翻译： 高强度镀锌钢板的TS为1200MPa以上，E1为13％以上，孔膨胀率为50％以上的机械特性及其制造方法。 成型性优异的高强度镀锌钢板包含0.05〜0.5％的C，0.01〜2.5％的Si，0.5〜3.5％的Mn，0.003〜0.100％的P，0.02％以下的S，0.010〜0.5 ％Al，其余为Fe和不可避免的杂质，并且具有包含0％至10％铁素体，0％至10％马氏体和60％至95％回火马氏体的微观结构，其面积基于由 结构观察，并且通过X射线衍射法确定还包含5％至20％的残余奥氏体。