公开(公告)号：US20150082855A1

公开(公告)日：2015-03-26

申请号：US14394570

申请日：2012-04-16

申请人： Yusuke Fujii ,  Toyohisa Shinmiya ,  Yuji Yamasaki ,  Kazuhiko Higai

发明人： Yusuke Fujii ,  Toyohisa Shinmiya ,  Yuji Yamasaki ,  Kazuhiko Higai

IPC分类号： G01N3/06 ,  B21D22/00

CPC分类号： G01N3/06 ,  B21D22/00 ,  G01N3/08 ,  G01N3/28 ,  G01N2203/0064 ,  G01N2203/0066 ,  G06F17/5018 ,  G06F17/5086 ,  G06F2217/42

摘要： A method of preparing a forming limit diagram in press forming includes obtaining a forming limit curve by subjecting a surface of a metal plate to be press-formed to marking at a distance between reference points of 0.5-1.0 mm, bulging the metal plate with a punch having a top minimum curvature radius of 3-10 mm and measuring a maximum principal strain and minimum principal strain at a time of generating cracks on the surface of the metal plate at a top portion of the punch from a change of the marking.

摘要翻译： 制备压制成型中的成形极限图的方法包括：通过对金属板的表面进行冲压成形以在0.5-1.0mm的参考点之间的距离进行标记来获得成形极限曲线，将金属板与 冲头具有3-10mm的最小最小曲率半径，并且从标记的变化测量在冲头顶部处的金属板的表面上产生裂纹时的最大主应变和最小主应变。

公开(公告)号：US20150076215A1

公开(公告)日：2015-03-19

申请号：US14394191

申请日：2012-04-13

申请人： Kazuhiko Higai ,  Yuji Yamasaki ,  Toyohisa Shinmiya

发明人： Kazuhiko Higai ,  Yuji Yamasaki ,  Toyohisa Shinmiya

IPC分类号： B21D22/02 ,  B23K31/02

CPC分类号： B21D22/025 ,  B21C37/0803 ,  B21C37/14 ,  B21C37/155 ,  B21C37/16 ,  B21D5/086 ,  B21D11/08 ,  B21D11/14 ,  B21D47/01 ,  B23K31/02

摘要： A method and apparatus manufactures a closed structure part without flange having a curvature and welded edges along a longitudinal direction of the part and further having a varying cross-sectional shape, from two metal plates. Each of two metal plates provided with a curvature along the longitudinal direction of the plate and provided with both ends in a width direction of the plate, are press-formed such that a folding line is formed at positions corresponding to a non-welded bent edge in a cross section of the part, and stacked on each other vertically such that their bulging sides face outward. Their left ends and right ends in the width direction are mutually welded along the longitudinal direction to form welded edges.

摘要翻译： 一种方法和装置制造封闭结构部件，没有凸缘，该凸缘具有曲率并沿着该部件的纵向方向焊接边缘，并且还具有来自两个金属板的变化的横截面形状。 沿着板的纵向方向设置有沿着板的宽度方向的两端的两个金属板中的每一个被压制成使得折叠线形成在对应于非焊接弯曲边缘的位置处 在该部分的横截面中，并且彼此垂直堆叠，使得其凸出面朝外。 其宽度方向的左端和右端沿长度方向相互焊接，形成焊接边缘。

公开(公告)号：US09669444B2

公开(公告)日：2017-06-06

申请号：US14394191

申请日：2012-04-13

申请人： Kazuhiko Higai ,  Yuji Yamasaki ,  Toyohisa Shinmiya

发明人： Kazuhiko Higai ,  Yuji Yamasaki ,  Toyohisa Shinmiya

IPC分类号： B23K37/00 ,  B23K37/02 ,  B23K37/04 ,  B23K28/00 ,  B21D22/02 ,  B21C37/08 ,  B21C37/15 ,  B23K31/02 ,  B21C37/14 ,  B21C37/16 ,  B21D5/08 ,  B21D47/01 ,  B21D11/08 ,  B21D11/14

CPC分类号： B21D22/025 ,  B21C37/0803 ,  B21C37/14 ,  B21C37/155 ,  B21C37/16 ,  B21D5/086 ,  B21D11/08 ,  B21D11/14 ,  B21D47/01 ,  B23K31/02

摘要： A method and apparatus manufactures a closed structure part without flange having a curvature and welded edges along a longitudinal direction of the part and further having a varying cross-sectional shape, from two metal plates. Each of two metal plates provided with a curvature along the longitudinal direction of the plate and provided with both ends in a width direction of the plate, are press-formed such that a folding line is formed at positions corresponding to a non-welded bent edge in a cross section of the part, and stacked on each other vertically such that their bulging sides face outward. Their left ends and right ends in the width direction are mutually welded along the longitudinal direction to form welded edges.

公开(公告)号：US07959745B2

公开(公告)日：2011-06-14

申请号：US11434047

申请日：2006-05-15

申请人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Shigeru Endo ,  Minoru Suwa

发明人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Shigeru Endo ,  Minoru Suwa

IPC分类号： C22C38/14 ,  C22C38/12 ,  C22C38/24 ,  C22C38/28

CPC分类号： C22C38/02 ,  C21D8/02 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  Y10S148/909

摘要： A high-strength steel pipe having a strength of API X65 grade or higher consisting essentially of, by mass %, 0.02 to 0.08% of C, 0.01 to 0.5% of Si, 0.5 to 1.8% of Mn, 0.01% or less of P, 0.002% or less of S, 0.01 to 0.7% of Al, 0.005 to 0.04% of Ti, 0.05 to 0.50% Mo, at least one element selected from 0.005 to 0.05% of Nb and 0.005 to 0.10% of V, and the balance being Fe, in which the volume percentage of the ferritic phase is 90% or higher, and complex carbides containing Ti, Mo, and at least one element selected from the group consisting of Nb and V are precipitated in the ferritic phase. The high-strength steel pipe has excellent HIC resistance and good toughness of a heat-affected zone, and can be manufactured stably at a low cost.

摘要翻译： 一种强度为API X65等级或更高的高强度钢管，其质量基本上由以下组成：质量％：C：0.02〜0.08％，Si：0.01〜0.5％，Mn：0.5〜1.8％，P：0.01％ ，0.002％以下的S，0.01〜0.7％的Al，0.005〜0.04％的Ti，0.05〜0.50％的Mo，至少1种元素，Nb：0.005〜0.05％，V：0.005〜0.10％ 余量为Fe，其中铁素体相的体积百分比为90％以上，并且含有Ti，Mo和选自Nb和V中的至少一种元素的复合碳化物在铁素体相中析出。 高强度钢管具有优异的耐热性和热影响区的韧性，可以以低成本稳定地制造。

公开(公告)号：US08147626B2

公开(公告)日：2012-04-03

申请号：US13053879

申请日：2011-03-22

申请人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Minoru Suwa ,  Shigeru Endo

发明人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Minoru Suwa ,  Shigeru Endo

IPC分类号： C21D8/02

CPC分类号： C22C38/04 ,  C21D1/19 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/12 ,  C22C38/14 ,  Y10T428/12951 ,  Y10T428/12965

摘要： A high strength steel plate containing 0.02 to 0.08% C, by mass, and has substantially a two phase microstructure of ferrite and bainite. The ferrite contains precipitates having a particle size of 30 nm or smaller grain size. The steel plate has a yield strength of 448 MPa or higher. A method for manufacturing the high strength steel plate which comprises hot rolling, accelerated cooling and reheating. The accelerated cooling is conducted down to a temperature of 300 to 600° C. at a cooling rate of 5° C./s or higher. The reheating is conducted up to a temperature of 550 to 700° C. at a heating rate of 0.5° C./s or higher.

摘要翻译： 含有0.02〜0.08％C质量％的高强度钢板，并具有铁素体和贝氏体的两相显微组织。 铁素体含有粒径为30nm以下的析出物。 钢板的屈服强度为448MPa以上。 一种制造高强度钢板的方法，其包括热轧，加速冷却和再加热。 加速冷却以5℃/ s以上的冷却速度进行到300〜600℃的温度。 以0.5℃/ s以上的加热速度将再加热进行到550〜700℃的温度。

公开(公告)号：US20110253267A1

公开(公告)日：2011-10-20

申请号：US13103586

申请日：2011-05-09

申请人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Shigeru Endo ,  Minoru Suwa

发明人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Shigeru Endo ,  Minoru Suwa

IPC分类号： C21D8/10 ,  C21D1/42

CPC分类号： C22C38/02 ,  C21D8/02 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  Y10S148/909

摘要： A high-strength steel pipe having a strength of API X65 grade or higher consisting essentially of, by mass %, 0.02 to 0.08% of C, 0.01 to 0.5% of Si, 0.5 to 1.8% of Mn, 0.01% or less of P, 0.002% or less of S, 0.01 to 0.7% of Al, 0.005 to 0.04% of Ti, 0.05 to 0.50% Mo, at least one element selected from 0.005 to 0.05% of Nb and 0.005 to 0.10% of V, and the balance being Fe, in which the volume percentage of the ferritic phase is 90% or higher, and complex carbides containing Ti, Mo, and at least one element selected from the group consisting of Nb and V are precipitated in the ferritic phase. The high-strength steel pipe has excellent HIC resistance and good toughness of a heat-affected zone, and can be manufactured stably at a low cost.

摘要翻译： 一种强度为API X65等级或更高的高强度钢管，其质量基本上由以下组成：质量％：C：0.02〜0.08％，Si：0.01〜0.5％，Mn：0.5〜1.8％，P：0.01％ ，0.002％以下的S，0.01〜0.7％的Al，0.005〜0.04％的Ti，0.05〜0.50％的Mo，至少1种元素，Nb：0.005〜0.05％，V：0.005〜0.10％ 余量为Fe，其中铁素体相的体积百分比为90％以上，并且含有Ti，Mo和选自Nb和V中的至少一种元素的复合碳化物在铁素体相中析出。 高强度钢管具有优异的耐热性和热影响区的韧性，可以以低成本稳定地制造。

公开(公告)号：US07520943B2

公开(公告)日：2009-04-21

申请号：US10559844

申请日：2004-06-10

申请人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Shigeru Endo ,  Ryuji Muraoka

发明人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Shigeru Endo ,  Ryuji Muraoka

IPC分类号： C22C38/12 ,  C22C38/14

CPC分类号： B21C37/083 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

摘要： A low yield ratio, high toughness steel plate which can be manufactured at high manufacturing efficiency and low cost, without increasing material cost by adding large amount of alloy elements and the like, and without degrading toughness of a welding heat affected zone, a low yield ratio, high strength and high toughness steel pipe using the steel plate, and a method for manufacturing those are provided. Specifically, the steel plate and the steel pipe contain C of 0.03% to 0.1%, Si of 0.01 to 0.5%, Mn of 1.2 to 2.5% and Al of 0.08% or less, wherein a metal structure is a substantially three-phase structure of ferrite, bainite and island martensite, and an area fraction of the island martensite is 3 to 20%, in addition, a complex carbide is precipitated in the ferrite phase.

摘要翻译： 低屈服比，高韧性钢板，可以以高生产效率和低成本制造，而不会通过加入大量的合金元素等而增加材料成本，并且不降低焊接热影响区的韧性，低屈服 比例，高强度和高韧性的钢管，以及制造这些钢管的方法。 具体来说，钢板和钢管的C为0.03〜0.1％，Si为0.01〜0.5％，Mn为1.2〜2.5％，Al为0.08％以下，金属结构基本上为三相结构 的铁素体，贝氏体和岛状马氏体，并且岛马氏体的面积率为3〜20％，此外，在铁素体相中析出复合碳化物。

公开(公告)号：US20060151074A1

公开(公告)日：2006-07-13

申请号：US10559844

申请日：2004-06-10

申请人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Shigeru Endo ,  Ryuji Muraoka

发明人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Shigeru Endo ,  Ryuji Muraoka

IPC分类号： C21D6/00 ,  C22C29/02

CPC分类号： B21C37/083 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

摘要： A low yield ratio, high toughness steel plate which can be manufactured at high manufacturing efficiency and low cost, without increasing material cost by adding large amount of alloy elements and the like, and without degrading toughness of a welding heat affected zone, a low yield ratio, high strength and high toughness steel pipe using the steel plate, and a method for manufacturing those are provided. Specifically, the steel plate and the steel pipe contain C of 0.03% to 0.1%, Si of 0.01 to 0.5%, Mn of 1.2 to 2.5% and Al of 0.08% or less, wherein a metal structure is a substantially three-phase structure of ferrite, bainite and island martensite, and an area fraction of the island martensite is 3 to 20%, in addition, a complex carbide is precipitated in the ferrite phase.

摘要翻译： 低屈服比，高韧性钢板，可以以高生产效率和低成本制造，而不会通过加入大量的合金元素等而增加材料成本，并且不降低焊接热影响区的韧性，低屈服 比例，高强度和高韧性的钢管，以及制造这些钢管的方法。 具体来说，钢板和钢管的C为0.03〜0.1％，Si为0.01〜0.5％，Mn为1.2〜2.5％，Al为0.08％以下，金属结构基本上为三相结构 的铁素体，贝氏体和岛状马氏体，并且岛马氏体的面积率为3〜20％，此外，在铁素体相中析出复合碳化物。

公开(公告)号：US07935197B2

公开(公告)日：2011-05-03

申请号：US11523387

申请日：2006-09-19

申请人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Minoru Suwa ,  Shigeru Endo

发明人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Minoru Suwa ,  Shigeru Endo

IPC分类号： C22C38/04 ,  C22C38/14 ,  C22C38/12

CPC分类号： C22C38/04 ,  C21D1/19 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/12 ,  C22C38/14 ,  Y10T428/12951 ,  Y10T428/12965

摘要： A high strength steel plate containing 0.02 to 0.08% C, by mass, and has substantially a two phase microstructure of ferrite and bainite. The ferrite contains precipitates having a particle size of 30 nm or smaller grain size. The steel plate has a yield strength of 448 MPa or higher. A method for manufacturing the high strength steel plate which comprises hot rolling, accelerated cooling and reheating. The accelerated cooling is conducted down to a temperature of 300 to 600° C. at a cooling rate of 5° C./s or higher. The reheating is conducted up to a temperature of 550 to 700° C. at a heating rate of 0.5° C./s or higher.

摘要翻译： 含有0.02〜0.08％C质量％的高强度钢板，并具有铁素体和贝氏体的两相显微组织。 铁素体含有粒径为30nm以下的析出物。 钢板的屈服强度为448MPa以上。 一种制造高强度钢板的方法，其包括热轧，加速冷却和再加热。 加速冷却以5℃/ s以上的冷却速度进行到300〜600℃的温度。 以0.5℃/ s以上的加热速度将再加热进行到550〜700℃的温度。

公开(公告)号：US20070012386A1

公开(公告)日：2007-01-18

申请号：US11523387

申请日：2006-09-19

申请人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Minoru Suwa ,  Shigeru Endo

发明人： Nobuyuki Ishikawa ,  Toyohisa Shinmiya ,  Minoru Suwa ,  Shigeru Endo

IPC分类号： C21D8/00

CPC分类号： C22C38/04 ,  C21D1/19 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/12 ,  C22C38/14 ,  Y10T428/12951 ,  Y10T428/12965

摘要： A high strength steel plate containing 0.02 to 0.08% C, by mass, and has substantially a two phase microstructure of ferrite and bainite. The ferrite contains precipitates having a particle size of 30 nm or smaller grain size. The steel plate has a yield strength of 448 MPa or higher. A method for manufacturing the high strength steel plate which comprises hot rolling, accelerated cooling and reheating. The accelerated cooling is conducted down to a temperature of 300 to 600° C. at a cooling rate of 5° C./s or higher. The reheating is conducted up to a temperature of 550 to 700° C. at a heating rate of 0.5° C./s or higher.

摘要翻译： 含有0.02〜0.08％C质量％的高强度钢板，并具有铁素体和贝氏体的两相显微组织。 铁素体含有粒径为30nm以下的析出物。 钢板的屈服强度为448MPa以上。 一种制造高强度钢板的方法，其包括热轧，加速冷却和再加热。 加速冷却以5℃/ s以上的冷却速度进行到300〜600℃的温度。 以0.5℃/ s以上的加热速度将再加热进行到550〜700℃的温度。