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1. 发明专利

JP2011094217A Electric resistance welded tube for drive shaft having excellent static torsion strength, and method for producing the same 有权
标题翻译：具有优异的静态扭矩强度的驱动轴的电阻焊管及其制造方法
公开(公告)号：JP2011094217A
公开(公告)日：2011-05-12
申请号：JP2009251923
申请日：2009-11-02
申请人： Honda Motor Co Ltd , Nippon Steel Corp , 新日本製鐵株式会社 , 本田技研工業株式会社
发明人： HARA TAKUYA , SAKAMOTO SHINYA , SEBAYASHI TAKAIKU , KAMIKAWA MITSURU , SEKI MASAHIKO
IPC分类号： C22C38/00 , C21D9/08 , C21D9/50 , C22C38/06 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To provide an electric resistance welded tube for a drive shaft made into automobile parts, particularly into hollow components requiring static torsion strength properties and made by cold-working an electric resistance welded tube so as to be molded into a prescribed shape, and performing high frequency quenching, and to provide a method for producing the same.
SOLUTION: The electric resistance welded tube has steel components comprising, by mass, 0.25 to 0.55% C, ≤0.35% Si, 0.600 to 1.50% Mn, 0.001 to 0.060 Al, 0.0001 to 0.0050% O, ≤0.0025% S, ≤0.010% P, ≤0.005% N and 0.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于制造成汽车部件的驱动轴的电阻焊管，特别是需要静态抗扭强度特性的中空部件，并通过冷加工电阻焊管来成型为规定的形状，进行高频淬火，并提供其制造方法。电解焊管具有钢质成分，其含有质量比为0.25〜0.55％的C，≤0.35％的Si，0.600〜1.50％的Mn，0.001〜0.060的Al，0.0001〜0.0050％的O，≤0.0025％的S ，≤0.010％P，≤0.005％N和<0.0003％B，余量为Fe与不可避免的杂质，其中垂直于电轴的管轴方向横截面的最小硬度（Hv）之间的关系电阻焊管和旧奥氏体晶粒数（GS）在截面上满足不等式：0.25Hv-65GS + 500> 0。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2010001566A Low-yield-ratio high-strength electric resistance welded steel tube and production method thereof 有权
标题翻译：低电阻率高强度电阻焊钢管及其生产方法
公开(公告)号：JP2010001566A
公开(公告)日：2010-01-07
申请号：JP2009119214
申请日：2009-05-15
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NAGAI KENSUKE , SHINOHARA YASUHIRO , SAKAMOTO SHINYA , ASAHI HITOSHI
IPC分类号： C22C38/00 , C21D9/08 , C21D9/50 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To provide an electric resistance welded steel tube which has limited C content so as to increase its weldability and toughness, achieves high strength and low yield ratio without containing any Cr and is excellent in toughness, and a production method thereof.
SOLUTION: The electric resistance welded steel tube has a composition comprising ≤0.25% C, appropriate amounts of Mn and Ti, limited amounts of Si, Al, P, S and N, 0.05-2.0% Mo and >0.1% but ≤1.0% V, has a metal structure composed of tempered martensite and has Ceq of ≥0.45, provided that Ceq is defined by the equation: Ceq=C+Mn/6+Ni/15+(Mo+V)/5. B, Ni and Nb may be further added. The yield strength is ≥800 MPa, while the yield ratio is ≤90%, and the Charpy absorbed energy is ≥200 J. The production method includes the steps of heating the electric resistance welded steel tube at a temperature ranging from Ac
3 to (Ac
3 +100)°C, quenching the same, and tempering the same at ≤550°C.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种C含量受限以提高其焊接性和韧性的电阻焊钢管，在不含有Cr的情况下实现高强度和低屈服比并且韧性优异，并且生产方法。解决方案：电阻焊钢管的组成包括≤0.25％C，适量Mn和Ti，有限量的Si，Al，P，S和N，0.05-2.0％Mo和> 0.1％，但 ≤1.0％V，具有由回火马氏体组成的金属结构，并且Ceq≥0.45，条件是Ceq由以下等式定义：Ceq = C + Mn / 6 + Ni / 15 +（Mo + V）/ 5。可以进一步添加B，Ni和Nb。屈服强度≥800MPa，屈服比≤90％，夏比吸收能≥200J。制备方法包括以下步骤：将电阻焊钢管在Ac 3℃，（Ac 3 +100）℃，淬火，并在≤550℃下回火。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2009249676A Steel pipe having excellent workability and method for producing the same 有权
标题翻译：具有优异的可操作性的钢管和用于生产它的方法
公开(公告)号：JP2009249676A
公开(公告)日：2009-10-29
申请号：JP2008098105
申请日：2008-04-04
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO SHINYA , TERADA YOSHIO
IPC分类号： C22C38/00 , B21C1/00 , C21D8/10 , C22C38/06 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe having excellent workability, which has satisfactory shape and surface properties, has excellent workability including a weld zone and is suitably usable for a steel pipe for structures purpose, piping or the like formed by tube drawing, bending, hydroforming or the like, and to provide a method for producing the same.
SOLUTION: The steel pipe contains steel components each controlled within a prescribed range, and the metallic structure in the whole region of the steel pipe including a seam weld zone has a composite structure composed of ferrite and either or both of martensite and bainite, wherein the X-ray reflective face random strength ratio of the {111} face of the sheet face in the 1/2 thickness of the steel pipe other than the seam weld zone lies in the range of 2.0 to 7.0, the X-ray reflective face random strength ratio of the {110} face lies in the range of 1.0 to 5.0, and the X-ray reflective face random strength ratio of the {100} face is ≤3.0.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：待解决的问题：为了提供具有良好的形状和表面性能的具有优异的加工性的钢管，具有包括焊接区域的优异的可加工性，并且适用于由结构目的，管道等形成的钢管，由管拉伸，弯曲，液压成形等，并提供其制造方法。钢管含有各自控制在规定范围内的钢构件，并且包括焊缝区域的钢管的整个区域中的金属结构具有由铁素体和马氏体和贝氏体中的任一种或两者组成的复合结构其特征在于，除了缝焊区域以外的钢管的1/2厚度的板面的ä111面的X射线反射面随机强度比在2.0〜7.0的范围内，X射线反射 ä110}面的面随机强度比在1.0〜5.0的范围内，ä100}面的X射线反射面随机强度比≤3.0。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2005112032A Reinforcing member for automobile 有权
标题翻译：加固汽车会员
公开(公告)号：JP2005112032A
公开(公告)日：2005-04-28
申请号：JP2003345627
申请日：2003-10-03
申请人： Nippon Steel Corp , Nissan Motor Co Ltd , 新日本製鐵株式会社 , 日産自動車株式会社
发明人： SAKAMOTO SHINYA , TERADA YOSHIO , KOYUMIBA MOTOFUMI , NAKANISHI EIZABURO , ONO KIMIMOTO
IPC分类号： B60J5/00
摘要： PROBLEM TO BE SOLVED: To provide a reinforcing member for an automobile, exhibiting bending characteristic more excellent than before.
SOLUTION: This reinforcing member for an automobile is a square pipe, which is characterized in that the outer sectional form is square or oblong, the outside of the corner part is not rounded, or rounded equal to or smaller than five times as large as the thickness, and the inner sectional form is a complete round concentric with the outer section, or an ellipse concentric with the outer section and having a central axis parallel to a side of the outer section.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种汽车用增强件，具有比以前更优异的弯曲特性。解决方案：用于汽车的该加强构件是方管，其特征在于，外截面形状是正方形或长方形，角部的外侧不是圆形，或者圆形等于或小于五倍内部截面形状与外部部分同心的完整圆形，或与外部部分同心且具有平行于外部部分侧面的中心轴线的椭圆形。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2008255394A Steel pipe having excellent workability, and method for producing the same 有权
标题翻译：具有优异的可操作性的钢管及其制造方法
公开(公告)号：JP2008255394A
公开(公告)日：2008-10-23
申请号：JP2007097216
申请日：2007-04-03
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO SHINYA , TERADA YOSHIO
IPC分类号： C22C38/00 , C21D8/02 , C21D9/08 , C21D9/50 , C22C38/06 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive steel pipe having satisfactory workability, and to provide a method for producing the same.
SOLUTION: In a steel pipe produced by subjecting a steel pipe as a pipe stock to cold pipe drawing and thereafter heating the same in the temperature range from an Ac1 transformation point -70°C to an Ac1 transformation point, in the whole region of the steel pipe including a seam weld zone, the fraction of ferrite is controlled to ≥60%, average crystal grain size is controlled to ≥10 μm, the average value of an aspect ratio is controlled to 1.0 to
摘要翻译：要解决的问题：提供具有令人满意的加工性的便宜的钢管，并提供其制造方法。解决方案：在通过将钢管作为管材进行冷管拉拔然后在Ac1相变点-70℃至Ac1相变点的温度范围内进行加热而制造的钢管中，整体上包括焊缝区域的钢管的区域，将铁素体的分数控制为≥60％，将平均晶粒尺寸控制为≥10μm，将纵横比的平均值控制为1.0〜5.0，并且形成规定的织构以获得其中rL和rC增加的钢管，并且可加工性得到改善。此外，在其制造方法中，将管坯进行冷管拉拔，以规定面积的减小和规定的厚度减小，在Ac1相变点-70℃的温度范围内被加热到Ac1相变点30秒，然后冷却。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2005112031A Reinforcing member for automobile 有权
标题翻译：加固汽车会员
公开(公告)号：JP2005112031A
公开(公告)日：2005-04-28
申请号：JP2003345626
申请日：2003-10-03
申请人： Nippon Steel Corp , Nissan Motor Co Ltd , 新日本製鐵株式会社 , 日産自動車株式会社
发明人： SAKAMOTO SHINYA , TERADA YOSHIO , KOYUMIBA MOTOFUMI , NIIYAMA FUMIHIKO , NAKANISHI EIZABURO , ONO KIMIMOTO
IPC分类号： B60J5/00 , B60J5/04 , B60R21/02 , B62D21/15 , B62D29/00 , C21D8/06
CPC分类号： B60J5/0444 , B60R21/02 , B62D21/157 , B62D29/007 , Y10T29/49622
摘要： PROBLEM TO BE SOLVED: To provide a reinforcing member for an automobile, having high bending reaction force at the initial stage of collision and also having a sectional form to reduce the manufacturing cost and the weight. SOLUTION: This reinforcing member for an automobile is a square steel pipe having a square section, satisfying the following expressions (1) to (3) and having strength such as tensile strength of 690 MPa or more. The expression (1) is R 1 ≤1.5t, the expression (2) is t R ≥1.1t, and R 1 ≥R 2 , wherein t is the board thickness (mm) of a side, t R is the board thickness of the corner, R 1 is an outside corner (mm), and R 2 is an inner corner R(mm). Further, preferably the maximum value and the minimum value of hardness in the section of the square steel pipe are both in the range of ±30% of the average value in the whole section. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在碰撞的初始阶段具有高弯曲反作用力的汽车用增强构件，并且还具有降低制造成本和重量的截面形状。解决方案：该汽车用增强构件是具有正方形截面的方钢管，满足下列表达式（1）至（3），并具有690MPa以上的拉伸强度等强度。表达式（1）为R ≤1.5t，表达式（2）为t R ≥1.1t，R 1 ≥R 2 ，其中t是侧面的板厚度（mm），t R 是角部的板厚度，R SB = 1 外角（mm），R 2 是内角R（mm）。此外，优选方形管的截面中的最大值和最小值的硬度都在整个区段的平均值的±30％的范围内。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2004337887A Method and equipment train for manufacturing tailored steel tube 审中-公开
标题翻译：用于制造定制钢管的方法和设备火车
公开(公告)号：JP2004337887A
公开(公告)日：2004-12-02
申请号：JP2003135369
申请日：2003-05-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OSAWA TAKASHI , SAWADA SHINYA , SAKAMOTO SHINYA , NIWA TOSHIYUKI
IPC分类号： B21C37/14 , B21D26/033 , B21D26/057 , B23K26/00 , B23K26/20 , B23K101/06 , B23K103/04
摘要： PROBLEM TO BE SOLVED: To provide a method and an equipment train for manufacturing a tailored steel tube in which the soundness of the welding quality of a tailored weld part and a longitudinal weld part of the steel tube is ensured, and the steel tube excellent for a stock tube for hydroforming is manufactured. SOLUTION: The equipment train for manufacturing the tailored steel tube consisting of one or both of two or more kinds of wall thickness and steel comprises a first cutting device to cut a steel plate or a steel strip to a predetermined size, a tailored blanking device to join the steel plates cut by the cutting device, a second cutting device to cut the joining steel plate to a predetermined size, a forming device to wind the steel plate cut to the predetermined size, and a welding equipment to perform laser beam welding of a butted portion of the formed steel plates. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于制造定制钢管的方法和设备列，其中确保了定制的焊接部分和钢管的纵向焊接部分的焊接质量的良好性，并且钢制造用于液压成型的储料管的优异的管。
解决方案：用于制造由两种或多种壁厚和钢中的一种或两种形成的定制钢管的设备列车包括将钢板或钢带切割成预定尺寸的第一切割装置，定制冲切装置，用于连接由切割装置切割的钢板，将接合钢板切割成预定尺寸的第二切割装置，将钢板切割成预定尺寸的成形装置和用于执行激光束的焊接设备焊接成形钢板的对接部分。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2003342687A Steel pipe excellent in strength/ductility balance and its production method 审中-公开
标题翻译：钢管优良强度/密度平衡及其生产方法
公开(公告)号：JP2003342687A
公开(公告)日：2003-12-03
申请号：JP2002153426
申请日：2002-05-28
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO SHINYA , TERADA YOSHIO
IPC分类号： C21D9/08 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe excellent in strength/ductility balance and its production method.
SOLUTION: This steel pipe contains 0.05-0.2 mass% C, 0.3-2.5 mass% Si, 0.10-3.00 mass% Mn, 0.005 mass% or less S, 0.15 mass% or less P, 0.005-0.100 mass% Al, 0.0050 mass% or less N, at least one element selected from among 0.001-0.200 mass% Ti, 0.001-0.200 mass% Nb, 0.001-0.200 mass% V, and 0.0005-0.0030 mass% B, and the balance being Fe and unavoidable impurities and has a complex structure comprising 5-20 mass% remaining austenite and the balance being at least one structure selected from among bainite, ferrite, and pearlite. In the method for producing the steel pipe, a steel pipe comprising the above components is reheated from the AC
1 transformation point temperature to the AC
3 transformation point temperature, kept for 30 min or less, cooled at a cooling rate of 0.5°C/s or higher to a temperature within the range from MS transformation point temperature +100°C to MS transformation point temperature, kept at that temperature for 30-300 sec, and air-cooled to room temperature.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供强度/延展性平衡优异的钢管及其制造方法。 <钢>该钢管含有0.05-0.2质量％的C，0.3-2.5质量％的Si，0.10-3.00质量％的Mn，0.005质量％以下的S，0.15质量％以下的P，0.005〜0.100质量％的Al ，0.0050质量％以下的N，选自0.001-0.200质量％Ti，0.001-0.200质量％Nb，0.001-0.200质量％V和0.0005-0.0030质量％B中的至少一种元素，余量为Fe和不可避免的杂质，并且具有包含5-20质量％剩余奥氏体的复合结构，余量为选自贝氏体，铁素体和珠光体中的至少一种结构。在钢管的制造方法中，将由上述成分构成的钢管从AC 1 相变点温度加热至AC 3 相变点温度，保持30 min以下，以0.5℃/ s以上的冷却速度冷却至从MS相变温度+ 100℃到MS相变点温度的温度，保持在该温度30〜300秒，空气冷至室温。版权所有（C）2004，JPO

9. 发明专利

JP2003342638A Process for manufacturing high-strength bent tube 有权
标题翻译：制造高强度弯管的工艺
公开(公告)号：JP2003342638A
公开(公告)日：2003-12-03
申请号：JP2002144991
申请日：2002-05-20
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TERADA YOSHIO , SAKAMOTO SHINYA
IPC分类号： B23K9/23 , B21C37/28 , B23K101/06 , C21D9/08 , C21D9/50 , C22C38/00 , C22C38/16 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a process for manufacturing a bent tube which shows a high strength of ≥X80 grade and an excellent low-temperature toughness at a weld metal part.
SOLUTION: A steel tube comprising a low-C-low-Si-Nb-trace-Ti base material substantially free from Al and the weld metal part with a good balance among Al, N, O and Ti contents, is heated to 800-900°C, bent and immediately quenched. This can realize inexpensive manufacturing of the high-strength bent tube (API grade ≥X65) showing an excellent low-temperature toughness in the base material and in the weld metal part.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种在焊接金属部件上显示高强度≥X80等级和优异的低温韧性的弯管的制造方法。解决方案：一种包含基本上不含Al的低C低Si-Nb-trace-Ti基材和Al，N，O和Ti含量之间具有良好平衡的焊接金属部分的钢管被加热至800-900°C，弯曲并立即淬火。这可以实现在基材和焊接金属部件中显示出优异的低温韧性的高强度弯管（API等级≥X65）的廉价制造。版权所有（C）2004，JPO

10. 发明专利

JP2003328079A Steel pipe superior in workability for cold forging, and manufacturing method therefor 审中-公开
标题翻译：用于冷锻的钢管管道及其制造方法
公开(公告)号：JP2003328079A
公开(公告)日：2003-11-19
申请号：JP2002138196
申请日：2002-05-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO SHINYA , TERADA YOSHIO , NIIYAMA FUMIHIKO
IPC分类号： C21D9/08 , C22C38/00 , C22C38/06 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe superior in workability for cold forging, and a manufacturing method therefor.
SOLUTION: The steel pipe superior in workability for cold forging has a composition comprising, by mass%, 0.10-0.50 C, 0.01-0.50 Si, 0.10-2.00 Mn, 0.03 or less S, 0.03 or less P, 0.010-0.100 Al, and 0.0050 or less N, further, as needed, one or more of 0.05-1.00 Cr, 0.10-2.00 Ni, 0.10-2.00 Cu, 0.05-1.00 Mo, 0.01-0.20 V, 0.01-0.20 Ti, 0.01-0.20 Nb, 0.0010 or less B, 0.0002-0.0020 Ca and the balance Fe with inevitable impurities, and has a structure comprising a cementite with a spheroidized rate of 80% or higher against the total occupation area of the cementite, and the balance ferrite.
COPYRIGHT: (C)2004,JPO
摘要翻译：解决的问题：提供一种在锻造上的加工性优异的钢管及其制造方法。解决方案：用于冷锻加工性优异的钢管具有以质量％计含有0.10-0.50℃，0.01-0.50Si，0.10-2.00Mn，0.03以下S，0.03以下P，0.010〜 0.100Al，0.0050以下的N，进一步根据需要，0.05-1.00Cr，0.10-2.00Ni，0.10-2.00Cu，0.05-1.00Mo，0.01-0.20V，0.01-0.20Ti，0.01〜 0.20Nb，0.0010以下的B，0.0002-0.0020Ca，余量为Fe与不可避免的杂质，并且具有包括渗碳率为80％以上的渗碳体相对于渗碳体的总占用面积的结构，余量为铁素体。版权所有（C）2004，JPO

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