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公开(公告)号：AT387516T
公开(公告)日：2008-03-15
申请号：AT06002344
申请日：1999-12-03
Applicant: JFE STEEL CORP
Inventor： FUJITA TAKESHI , KITANO FUSATO , HOSOYA YOSHIHIRO , INAZUMI TORU , YAMASAKI YUJI , MORITA MASAYA , NAGATAKI YASUNOBU , HASEGAWA KOHEI , MATSUDA HIROSHI , ONO MORIAKI
Abstract: The present invention relates to a very low C-Nb cold rolled steel sheet giving 340 to 440 MPa of tensile strength. For example, the cold rolled steel sheet consists of 0.0040 to 0.01% C, not more than 0.05% Si, 0.1 to 1.0% Mn, 0.01 to 0.05% P, not more than 0.02% S, 0.01 to 0.1% sol.Al, not more than 0.004% N, 0.01 to 0.14% Nb, by weight, and balance of Fe and inevitable impurities, and has not less than 0.21 of n value calculated from two points (1% and 10%) of nominal strain determined by the uniaxial tensile test, and relates to a method for manufacturing the cold rolled steel sheet. The present invention provides a high strength cold rolled steel sheet for automobile exterior panels having excellent combined formability, resistance to embrittlement during secondary operation, formability at welded portions, anti-burring performance, good surface appearance, and uniformity of material in a coil.
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公开(公告)号：DE69935125T3
公开(公告)日：2015-05-21
申请号：DE69935125
申请日：1999-12-03
Applicant: JFE STEEL CORP
Inventor： HOSOYA YOSHIHIRO , MORITA MASAYA , FUJITA TAKESHI , KITANO FUSATO , INAZUMI TORU , YAMASAKI YUJI , NAGATAKI YASUNOBU , HASEGAWA KOHEI , MATSUDA HIROSHI , ONO MORIAKI
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公开(公告)号：DE69935125T2
公开(公告)日：2007-10-25
申请号：DE69935125
申请日：1999-12-03
Applicant: JFE STEEL CORP
Inventor： FUJITA TAKESHI , KITANO FUSATO , HOSOYA YOSHIHIRO , INAZUMI TORU , YAMASAKI YUJI , MORITA MASAYA , NAGATAKI YASUNOBU , HASEGAWA KOHEI , MATSUDA HIROSHI , ONO MORIAKI
Abstract: The present invention relates to a very low C-Nb cold rolled steel sheet giving 340 to 440 MPa of tensile strength. For example, the cold rolled steel sheet consists of 0.0040 to 0.01% C, not more than 0.05% Si, 0.1 to 1.0% Mn, 0.01 to 0.05% P, not more than 0.02% S, 0.01 to 0.1% sol.Al, not more than 0.004% N, 0.01 to 0.14% Nb, by weight, and balance of Fe and inevitable impurities, and has not less than 0.21 of n value calculated from two points (1% and 10%) of nominal strain determined by the uniaxial tensile test, and relates to a method for manufacturing the cold rolled steel sheet. The present invention provides a high strength cold rolled steel sheet for automobile exterior panels having excellent combined formability, resistance to embrittlement during secondary operation, formability at welded portions, anti-burring performance, good surface appearance, and uniformity of material in a coil.
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4.发明公开HIGH STRENGTH COLD ROLLED STEEL PLATE AND METHOD FOR PRODUCING THE SAME 有权赫尔斯堡，KALTGEWALZTES STAHLBLECH UND VERFAHREN ZU DESSEN HERSTELLUNG
公开(公告)号：EP1052302A4
公开(公告)日：2004-12-15
申请号：EP99973310
申请日：1999-12-03
Applicant: JFE STEEL CORP
Inventor： FUJITA TAKESHI , KITANO FUSATO , HOSOYA YOSHIHIRO , INAZUMI TORU , YAMASAKI YUJI , MORITA MASAYA , NAGATAKI YASUNOBU , HASEGAWA KOHEI , MATSUDA HIROSHI , ONO MORIAKI
CPC classification number: C22C38/12 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06
Abstract: A cold rolled steel plate which has a tensile strength of 340 to 440 Mpa, has an extra low carbon content and contains Nb incorporated therein, an exemplary composition thereof being in wt % C: 0.0040 to 0.01 %, Si: 0.05 % or less, Mn: 0.1 to 1.0 %, P: 0.01 to 0.05 %, S: 0.02 % or less, sol.Al: 0.01 to 0.1 %, N: 0.004 % or less, Nb: 0.01 to 0.14 % and balance: Fe and inevitable impurities, and has a n value calculated from two points at which nominal strains are 1 % and 10 % according to the uni-axial tensile test of 0.21 or more; and a method for producing the cold rolled steel plate. The cold rolled steel plate provides a high strength cold rolled steel plate suitable for an outer panel of an automobile which is excellent in complex formability, resistance to brittle fracture in a secondary operation, formability in welding, resistance to flash burr, surface properties and uniformity of material quality in a coil.
Abstract translation: 本发明涉及一种具有340-440MPa拉伸强度的非常低的C-Nb冷轧钢板。 例如，冷轧钢板由0.0040〜0.01％的C，不大于0.05％的Si，0.1〜1.0％的Mn，0.01〜0.05％的P，不大于0.02％的S，0.01〜0.1％的溶胶，Al， 不超过0.004％的N，0.01〜0.14％的Nb，以及余量的Fe和不可避免的杂质，并且具有不小于0.21的n值，由两个点（1％和10％）由标称应变所确定的 单轴拉伸试验，涉及冷轧钢板的制造方法。 本发明提供了一种具有优异的组合成型性，二次加工中的脆性，焊接部的成形性，抗磨损性能，良好的表面外观以及线圈材料的均匀性的高强度冷轧钢板。
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Patent Agency Ranking
公开(公告)号：DE69938265T2
公开(公告)日：2009-02-26
申请号：DE69938265
申请日：1999-12-03
Applicant: JFE STEEL CORP
Inventor： FUJITA TAKESHI , KITANO FUSATO , HOSOYA YOSHIHIRO , INAZUMI TORU , YAMASAKI YUJI , MORITA MASAYA , NAGATAKI YASUNOBU , HASEGAWA KOHEI , MATSUDA HIROSHI , ONO MORIAKI
Abstract: The present invention relates to a very low C-Nb cold rolled steel sheet giving 340 to 440 MPa of tensile strength. For example, the cold rolled steel sheet consists of 0.0040 to 0.01% C, not more than 0.05% Si, 0.1 to 1.0% Mn, 0.01 to 0.05% P, not more than 0.02% S, 0.01 to 0.1% sol.Al, not more than 0.004% N, 0.01 to 0.14% Nb, by weight, and balance of Fe and inevitable impurities, and has not less than 0.21 of n value calculated from two points (1% and 10%) of nominal strain determined by the uniaxial tensile test, and relates to a method for manufacturing the cold rolled steel sheet. The present invention provides a high strength cold rolled steel sheet for automobile exterior panels having excellent combined formability, resistance to embrittlement during secondary operation, formability at welded portions, anti-burring performance, good surface appearance, and uniformity of material in a coil.
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公开(公告)号：DE69938265D1
公开(公告)日：2008-04-10
申请号：DE69938265
申请日：1999-12-03
Applicant: JFE STEEL CORP
Inventor： FUJITA TAKESHI , KITANO FUSATO , HOSOYA YOSHIHIRO , INAZUMI TORU , YAMASAKI YUJI , MORITA MASAYA , NAGATAKI YASUNOBU , HASEGAWA KOHEI , MATSUDA HIROSHI , ONO MORIAKI
Abstract: The present invention relates to a very low C-Nb cold rolled steel sheet giving 340 to 440 MPa of tensile strength. For example, the cold rolled steel sheet consists of 0.0040 to 0.01% C, not more than 0.05% Si, 0.1 to 1.0% Mn, 0.01 to 0.05% P, not more than 0.02% S, 0.01 to 0.1% sol.Al, not more than 0.004% N, 0.01 to 0.14% Nb, by weight, and balance of Fe and inevitable impurities, and has not less than 0.21 of n value calculated from two points (1% and 10%) of nominal strain determined by the uniaxial tensile test, and relates to a method for manufacturing the cold rolled steel sheet. The present invention provides a high strength cold rolled steel sheet for automobile exterior panels having excellent combined formability, resistance to embrittlement during secondary operation, formability at welded portions, anti-burring performance, good surface appearance, and uniformity of material in a coil.
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公开(公告)号：DE69935125D1
公开(公告)日：2007-03-29
申请号：DE69935125
申请日：1999-12-03
Applicant: JFE STEEL CORP
Inventor： FUJITA TAKESHI , KITANO FUSATO , HOSOYA YOSHIHIRO , INAZUMI TORU , YAMASAKI YUJI , MORITA MASAYA , NAGATAKI YASUNOBU , HASEGAWA KOHEI , MATSUDA HIROSHI , ONO MORIAKI
Abstract: The present invention relates to a very low C-Nb cold rolled steel sheet giving 340 to 440 MPa of tensile strength. For example, the cold rolled steel sheet consists of 0.0040 to 0.01% C, not more than 0.05% Si, 0.1 to 1.0% Mn, 0.01 to 0.05% P, not more than 0.02% S, 0.01 to 0.1% sol.Al, not more than 0.004% N, 0.01 to 0.14% Nb, by weight, and balance of Fe and inevitable impurities, and has not less than 0.21 of n value calculated from two points (1% and 10%) of nominal strain determined by the uniaxial tensile test, and relates to a method for manufacturing the cold rolled steel sheet. The present invention provides a high strength cold rolled steel sheet for automobile exterior panels having excellent combined formability, resistance to embrittlement during secondary operation, formability at welded portions, anti-burring performance, good surface appearance, and uniformity of material in a coil.
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公开(公告)号：AT353985T
公开(公告)日：2007-03-15
申请号：AT99973310
申请日：1999-12-03
Applicant: JFE STEEL CORP
Inventor： FUJITA TAKESHI , KITANO FUSATO , HOSOYA YOSHIHIRO , INAZUMI TORU , YAMASAKI YUJI , MORITA MASAYA , NAGATAKI YASUNOBU , HASEGAWA KOHEI , MATSUDA HIROSHI , ONO MORIAKI
Abstract: The present invention relates to a very low C-Nb cold rolled steel sheet giving 340 to 440 MPa of tensile strength. For example, the cold rolled steel sheet consists of 0.0040 to 0.01% C, not more than 0.05% Si, 0.1 to 1.0% Mn, 0.01 to 0.05% P, not more than 0.02% S, 0.01 to 0.1% sol.Al, not more than 0.004% N, 0.01 to 0.14% Nb, by weight, and balance of Fe and inevitable impurities, and has not less than 0.21 of n value calculated from two points (1% and 10%) of nominal strain determined by the uniaxial tensile test, and relates to a method for manufacturing the cold rolled steel sheet. The present invention provides a high strength cold rolled steel sheet for automobile exterior panels having excellent combined formability, resistance to embrittlement during secondary operation, formability at welded portions, anti-burring performance, good surface appearance, and uniformity of material in a coil.
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公开(公告)号：JP2010110803A
公开(公告)日：2010-05-20
申请号：JP2008287474
申请日：2008-11-10
Applicant: Jfe Steel Corp , Jfeスチール株式会社
Inventor： MORITA MASAYA
Abstract: PROBLEM TO BE SOLVED: To provide an inside-diameter paper pipe effective for preventing a reel mark and a segment mark from occurring in the coil inside-diameter of a metal strip, and to provide a method for winding a metal strip on the inside-diameter paper pipe.
SOLUTION: The inside-diameter paper pipe includes a rubber layer on the outer peripheral surface of the paper pipe. A vertical wall section having a step of 2.5 times or more in the thickness of the metal strip and a V-shaped cut part comprising a tapered section having an outer peripheral length of more than 10 mm are provided at one part on the outer peripheral surface of the rubber layer in the paper pipe direction. When the metal strip is wound around the outer periphery of the paper pipe, the tip of the metal strip to be wound is curved and deformed to be less than the radius of curvature of the winding reel outer periphery, and then the tip of the metal strip corrected in shape is abutted on the cut part formed on the rubber layer. Then, the winding of the metal strip is started.
COPYRIGHT: (C)2010,JPO&INPITAbstract translation: 要解决的问题：为了提供一种有效地防止在金属带的线圈内径中发生卷轴标记和段标记的内径纸管，并且提供一种将金属带卷绕在其上的方法 内径纸管。 解决方案：内径纸管在纸管的外周面上具有橡胶层。 在金属带的厚度上具有2.5倍以上的台阶的垂直壁部分和包括外周长度大于10mm的锥形部分的V形切割部分设置在外周面的一个部分 的橡胶层在纸管方向。 当金属带卷绕在纸管的外周时，待卷绕的金属带的前端弯曲变形，使其小于卷绕卷轴外周的曲率半径，然后将金属的尖端 形状校正的条带邻接在形成在橡胶层上的切割部分上。 然后，开始金属带的卷绕。 版权所有（C）2010，JPO＆INPIT
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