公开(公告)号：US10066283B2

公开(公告)日：2018-09-04

申请号：US15249595

申请日：2016-08-29

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Yuri Toda ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kohichi Sano ,  Hiroshi Yoshida ,  Toshio Ogawa

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C23C2/02 ,  C23C2/28 ,  C22C38/00 ,  C22C38/12 ,  C22C38/14 ,  C21D8/02 ,  C22C38/08 ,  C22C38/16 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C21D9/46 ,  C23C2/40

摘要： This high-strength cold-rolled steel sheet having excellent uniform elongation and hole expandability contains, C: 0.01 to 0.4%; Si: 0.001 to 2.5%; Mn: 0.001 to 4.0%; P: 0.001 to 0.15%; S: 0.0005 to 0.03%; Al: 0.001 to 2.0%; N: 0.0005 to 0.01%; and O: 0.0005 to 0.01%; in which Si+Al is limited to less than 1.0%, and a balance being composed of iron and inevitable impurities, in which at a sheet thickness center portion, an average value of pole densities of the {100} to {223} orientation group is 5.0 or less, and a pole density of the {332} crystal orientation is 4.0 or less, a metal structure contains 5 to 80% of ferrite, 5 to 80% of bainite, and 1% or less of martensite in terms of an area ratio and the total of martensite, pearlite, and retained austenite is 5% or less, and an r value (rC) in a direction perpendicular to a rolling direction is 0.70 or more and an r value (r30) in a direction 30° from the rolling direction is 1.10 or less.

公开(公告)号：US09187797B2

公开(公告)日：2015-11-17

申请号：US13823644

申请日：2012-05-25

申请人： Shinya Teramoto ,  Hiromasa Takada ,  Manabu Kubota ,  Yoichi Taniguchi ,  Junichi Nakatsuka ,  Kazuhiro Fujimura ,  Satoshi Koganemaru

发明人： Shinya Teramoto ,  Hiromasa Takada ,  Manabu Kubota ,  Yoichi Taniguchi ,  Junichi Nakatsuka ,  Kazuhiro Fujimura ,  Satoshi Koganemaru

IPC分类号： C21D8/00 ,  C22C38/00 ,  B21J1/00 ,  C21D6/00 ,  C21D1/20 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/60

CPC分类号： C21D8/005 ,  B21J1/003 ,  C21D1/20 ,  C21D6/00 ,  C21D2211/002 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/60

摘要： The present invention provides a steel part for machine structural use whose fatigue strength and toughness are improved and a manufacturing method thereof. A steel part made of a steel containing, in mass %, C: 0.05 to 0.20%, Si: 0.10 to 1.00%, Mn: 0.75 to 3.00%, P: 0.001 to 0.050%, S: 0.001 to 0.200%, V: exceeding 0.20 to 0.25%, Cr: 0.01 to 1.00%, Al: 0.001 to 0.500%, and N: 0.0080 to 0.0200%, and a balance being composed of Fe and inevitable impurities, in which a steel structure contains a bainite structure having an area ratio of 95% or more, a bainite lath width is 5 μm or less, V carbide having an average grain diameter of not less than 4 nm nor more than 7 nm dispersedly exists in the bainite structure, and an area ratio of V carbide in the bainite structure is 0.18% or more.

摘要翻译： 本发明提供了一种改善疲劳强度和韧性的机械结构用钢部件及其制造方法。 钢的钢部件以质量％计含有C：0.05〜0.20％，Si：0.10〜1.00％，Mn：0.75〜3.00％，P：0.001〜0.050％，S：0.001〜0.200％，V： 超过0.20〜0.25％，Cr：0.01〜1.00％，Al：0.001〜0.500％，N：0.0080〜0.0200％，余量由Fe和不可避免的杂质组成，其中钢结构体含有贝氏体结构， 贝氏体板条宽度为5μm以下，平均粒径为4nm以上且7nm以下的V碳化物分散存在于贝氏体组织中，V碳化物的面积比为95％ 在贝氏体结构中为0.18％以上。

公开(公告)号：US20140087320A1

公开(公告)日：2014-03-27

申请号：US14119819

申请日：2012-05-23

申请人： Kenichi Karimine ,  Masaharu Ueda ,  Katsuya Iwano ,  Hideo Tottori ,  Takeshi Yamamoto

发明人： Kenichi Karimine ,  Masaharu Ueda ,  Katsuya Iwano ,  Hideo Tottori ,  Takeshi Yamamoto

IPC分类号： C21D9/04

CPC分类号： C21D9/04 ,  B23K31/02 ,  B23K2101/26 ,  B23K2103/04 ,  C21D1/30 ,  C21D9/50 ,  C21D2221/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

摘要： A method of reheating a rail weld zone after rails were welded, a distance C between a reheating region P of a rail web portion 2 and a welding center Q is set to more than or equal to 0.2 times and less than or equal to three times a HAZ length Lh of the rail weld zone. A length B of the reheating region P may be more than or equal to 0.5 times and less than or equal to five times the HAZ length Lh of the rail weld zone. A height A of the reheating region P may be more than or equal to 0.2 times a height Hw of the rail web portion 2. A temperature Th reached in a reheating process at a center of the reheating region P may be higher than or equal to 400° C. and lower than or equal to 750° C.

摘要翻译： 在焊接轨道之后再次加热钢轨焊接区域的方法，将铁轨腹板部分2的再加热区域P与焊接中心Q之间的距离C设定为大于或等于0.2倍且小于或等于三倍 轨道焊接区的HAZ长度Lh。 再加热区域P的长度B可以大于或等于轨道焊接区域的HAZ长度Lh的0.5倍且小于或等于五倍。 再加热区域P的高度A可以大于或等于轨道腹板部分2的高度Hw的0.2倍。再加热区域P的中心处的再加热过程中达到的温度Th可以高于或等于 400℃，低于或等于750℃

公开(公告)号：US10144983B2

公开(公告)日：2018-12-04

申请号：US14119819

申请日：2012-05-23

申请人： Kenichi Karimine ,  Masaharu Ueda ,  Katsuya Iwano ,  Hideo Tottori ,  Takeshi Yamamoto

发明人： Kenichi Karimine ,  Masaharu Ueda ,  Katsuya Iwano ,  Hideo Tottori ,  Takeshi Yamamoto

IPC分类号： C21D9/04 ,  B23K31/02 ,  C21D1/30 ,  C21D9/50 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  B23K101/26 ,  B23K103/04

摘要： A method of reheating a rail weld zone after rails were welded, a distance C between a reheating region P of a rail web portion 2 and a welding center Q is set to more than or equal to 0.2 times and less than or equal to three times a HAZ length Lh of the rail weld zone. A length B of the reheating region P may be more than or equal to 0.5 times and less than or equal to five times the HAZ length Lh of the rail weld zone. A height A of the reheating region P may be more than or equal to 0.2 times a height Hw of the rail web portion 2. A temperature Th reached in a reheating process at a center of the reheating region P may be higher than or equal to 400° C. and lower than or equal to 750° C.

公开(公告)号：US09587287B2

公开(公告)日：2017-03-07

申请号：US13985001

申请日：2012-03-29

申请人： Tatsuo Yokoi ,  Hiroshi Shuto ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kazuaki Nakano ,  Takeshi Yamamoto

发明人： Tatsuo Yokoi ,  Hiroshi Shuto ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kazuaki Nakano ,  Takeshi Yamamoto

IPC分类号： C21D8/02 ,  C22C38/28 ,  C22C38/16 ,  C22C38/14 ,  C21D9/46 ,  C22C38/06 ,  C22C38/58 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/38

CPC分类号： C21D9/46 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2201/05 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/28 ,  C22C38/38 ,  C22C38/58

摘要： The present invention provides a bainite-containing-type high-strength hot-rolled steel sheet. The steel sheet, containing C: greater than 0.07 to 0.2%, Si: 0.001 to 2.5%, Mn: 0.01 to 4%, P: 0.15% or less, S: 0.03% or less, N: 0.01% or less, Al: 0.001 to 2% and a balance being composed of Fe and impurities, has an average value of pole densities of the {100} to {223} orientation group at a sheet thickness center portion being a range of ⅝ to ⅜ in sheet thickness from the surface of the steel sheet is 4.0 or less, and a pole density of the {332} crystal orientation is 4.8 or less, an average crystal grain diameter is 10 μm or less and vTrs is −20° C. or lower, and a microstructure is composed of 35% or less in a structural fraction of pro-eutectoid ferrite and a balance of a low-temperature transformation generating phase.

摘要翻译： 本发明提供一种含贝氏体型的高强度热轧钢板。 含有C：大于0.07〜0.2％，Si：0.001〜2.5％，Mn：0.01〜4％，P：0.15％以下，S：0.03％以下，N：0.01％以下的钢板 0.001〜2％，余量由Fe和杂质构成，板厚中心部的{100} <011>〜{223} <110>取向基的极点的平均值为⅝ 从钢板表面到板的厚度为4.0以下，{332} <113>晶体取向的极点密度为4.8以下，平均晶粒直径为10μm以下，vTrs为 - 20℃以下，在共析铁素体的结构部分中的微观结构为35％以下，低温变形生成相的平衡。

公开(公告)号：US09512508B2

公开(公告)日：2016-12-06

申请号：US14235009

申请日：2012-07-27

申请人： Hiroshi Shuto ,  Nobuhiro Fujita ,  Tatsuo Yokoi ,  Riki Okamoto ,  Kazuaki Nakano ,  Shinichiro Watanabe

发明人： Hiroshi Shuto ,  Nobuhiro Fujita ,  Tatsuo Yokoi ,  Riki Okamoto ,  Kazuaki Nakano ,  Shinichiro Watanabe

IPC分类号： C22C38/38 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C21D8/04 ,  C21D8/02 ,  C22C38/08 ,  C22C38/10 ,  C22C38/16 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32

CPC分类号： C22C38/38 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0473 ,  C21D2201/05 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  Y10T428/12799

摘要： A high-strength cold-rolled steel sheet having excellent stretch flangeability and precision punchability containing predetermined components and a balance being composed of iron and inevitable impurities, in which in a range of ⅝ to ⅜ in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100} to {223} orientation group represented by respective crystal orientations of {100} , {116} , {114} , {113} , {112} , {335} , and {223} is 6.5 or less, and a pole density of the {332} crystal orientation is 5.0 or less, and a metal structure contains, in terms of an area ratio, greater than 5% of pearlite, the sum of bainite and martensite limited to less than 5%, and a balance composed of ferrite.

摘要翻译： 一种高强度冷轧钢板，其特征在于，具有优异的拉伸凸缘性和精密冲压性，其特征在于，在钢板表面的板厚为⅝〜⅜的范围内，由铁和不可避免的杂质构成， {100} <011>，{116} <110>，{114} <110>的各个晶体取向表示的{100} <011>至{223} <110>取向基团的极点密度的平均值， {113} <110>，{112} <110>，{335} <110>和{223} <110>为6.5以下，并且{332} <113>晶体取向的极点密度为5.0或 更少，金属结构体以面积比计含有大于5％的珠光体，贝氏体和马氏体的总和为5％以下，铁素体为平衡。

公开(公告)号：US09481148B2

公开(公告)日：2016-11-01

申请号：US14127780

申请日：2012-06-29

申请人： Takeshi Yasui ,  Tooru Oohashi ,  Nayuta Kawazu ,  Satoru Tanaka ,  Akio Saito

发明人： Takeshi Yasui ,  Tooru Oohashi ,  Nayuta Kawazu ,  Satoru Tanaka ,  Akio Saito

IPC分类号： B32B15/01 ,  C23C2/00 ,  C23C2/02 ,  C23C2/06 ,  C22C18/00 ,  C22C18/04

CPC分类号： B32B15/013 ,  B32B15/01 ,  C22C18/00 ,  C22C18/04 ,  C23C2/02 ,  C23C2/06 ,  Y10T428/12799

摘要： The present invention provides a high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity. The steel sheet includes: a coating layer containing Al: 4 to 22 mass %, Mg: 1 to 6 mass %, and Si: 0.001 to 1 mass %, and a balance being composed of Zn and inevitable impurities formed on a surface, in which at an interface between the coating layer and a base steel sheet, Mg2Si phases and Ca phases each mainly composed of Ca or a Ca compound exist, and at least part of the Mg2Si phases precipitate by using the Ca phases as a nucleus.

摘要翻译： 本发明提供具有优异外观均匀性的高耐腐蚀性热浸镀锌钢板。 钢板包括：Al：4〜22质量％，Mg：1〜6质量％，Si：0.001〜1质量％的涂层，余量由表面形成的Zn和不可避免的杂质构成， 在涂层和基体钢板之间的界面处存在主要由Ca或Ca化合物组成的Mg 2 Si相和Ca相，通过使用Ca相作为核，至少部分Mg2Si相析出。

公开(公告)号：US10287658B2

公开(公告)日：2019-05-14

申请号：US14240597

申请日：2012-08-23

申请人： Makoto Okonogi ,  Shingo Yamasaki ,  Akifumi Kawana ,  Hideaki Gotohda

发明人： Makoto Okonogi ,  Shingo Yamasaki ,  Akifumi Kawana ,  Hideaki Gotohda

IPC分类号： C22C38/00 ,  C21D8/06 ,  C22C38/04 ,  C22C38/14 ,  C22C38/02 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22

摘要： A wire material used for manufacturing a non-heat treated component whose tensile strength is 900 MPa to 1300 MPa, containing, in mass %: C: 0.20% to 0.50%, Si: 0.05% to 2.0%, Mn: 0.20% to 1.0%, being limited to contain P: 0.030% or less, S: 0.030% or less, N: 0.005% or less, F1 defined by the following expression (1) is less than 0.60, with the balance made up of Fe and inevitable impurities, wherein a metal structure contains a pearlite structure of 64×(C %)+52% or more in a volume fraction, with the balance made up of one kind or two kinds of a pro-eutectoid ferrite structure and a bainite structure, an average block grain diameter of the pearlite structure at a region from a surface layer to 0.1 D is 15 μm or less when a diameter of the wire material is set to be D, and (the average block grain diameter of the pearlite structure at the region from the surface layer to 0.1 D)/(an average block grain diameter of the pearlite structure at a range from 0.25 D to a center) is less than 1.0. F1=C (%)+Si (%)/24+Mn (%)/6  (1)

公开(公告)号：US09782824B2

公开(公告)日：2017-10-10

申请号：US14766041

申请日：2014-04-28

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Shuntaro Imai ,  Yasuo Maruki ,  Daisuke Miki ,  Hiroaki Uchiyama

IPC分类号： B21B1/46 ,  B22D11/12 ,  B22D11/128 ,  B21B27/02 ,  B21B13/22

CPC分类号： B22D11/12 ,  B21B1/46 ,  B21B13/22 ,  B21B27/021 ,  B22D11/1206 ,  B22D11/1282 ,  B22D11/1287

摘要： Continuous casting equipment includes a casting product reduction apparatus and a casting product drawing apparatus, the casting product reduction apparatus including a pair of casting product reduction rolls that sandwich and apply pressure to a casting product and being configured to apply reduction to the casting product, the casting product drawing apparatus being provided in a following stage of the casting product reduction apparatus and configured to sandwich and draw the casting product with a pair of casting product drawing rolls. At least one of the pair of casting product reduction rolls includes a large-diameter part that projects radially outward in an axial-direction center region and applies pressure to a width-direction center region of the casting product. The casting product that is subjected to reduction by the casting product reduction apparatus has a depressed part corresponding to the large-diameter part. At least one of the pair of casting product drawing rolls of the casting product drawing apparatus includes a depressed part supporting part that contacts with and supports the depressed part, and is driven by a driving mechanism. An axial-direction length L2 of the depressed part supporting part and an axial-direction length L1 of the large-diameter part of the casting product reduction roll satisfy 0.5×L1≦L2

公开(公告)号：US20150167192A1

公开(公告)日：2015-06-18

申请号：US14632008

申请日：2015-02-26

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Akira TACHIKI ,  Shigeru HIRANO ,  Hirokazu YOKOYA ,  Masakazu NODA ,  Hiroshi NISHIDA ,  Kazushige HASEGAWA

IPC分类号： C25D5/48 ,  C23C22/36 ,  C23C22/07

CPC分类号： C25D5/48 ,  B32B15/015 ,  C23C22/07 ,  C23C22/34 ,  C23C22/361 ,  C23C22/83 ,  C23C28/021 ,  C25D11/26 ,  Y10T428/12937

摘要： The present invention provides a method of manufacturing a steel sheet for a container which has a plated layer containing Ni of 300 to 1000 mg/m2 in terms of Ni metal, provided on at least one surface of a steel sheet, which has a chemical conversion treatment film containing Zr of 1.0 to 50 mg/m2 in terms of Zr metal, provided on the steel sheet, which contains a phosphate compound of 0.5 to 25 mg/m2, and of which a F-atom number density measured by XPS analysis of a plane of 2 nm and a plane of 4 nm in a depth direction obtained by a sputtering treatment is equal to or less than 2 at %. The method includes forming the chemical conversion treatment film on the steel sheet by performing an immersion or a cathodic electrolytic treatment with a solution containing Zr ions, F ions, and phosphate ions, and performing a washing treatment with a warm water at 40° C. or higher for 0.5 or more seconds.

摘要翻译： 本发明提供一种制造容器用钢板的方法，该方法具有镀镍层，该镀层含有以Ni金属计的换算为Ni〜Ni量为300〜1000mg / m2，设置在钢板的至少一个表面上，该钢板具有化学转化率 设置在含有0.5〜25mg / m 2的磷酸化合物的钢板上的以Zr金属计的Zr为1.0〜50mg / m 2的Zr的处理膜，通过XPS分析测定的F原子数密度 通过溅射处理获得的深度方向上的2nm的平面和4nm的平面等于或小于2at％。 该方法包括通过用含有Zr离子，F离子和磷酸根离子的溶液进行浸渍或阴极电解处理，在40℃下用温水进行洗涤处理，在钢板上形成化学转化处理膜。 或更高，持续0.5秒以上。