公开(公告)号：JP2013014834A

公开(公告)日：2013-01-24

申请号：JP2012083489

申请日：2012-04-02

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： MAKISUI YOICHI ,  SUZUKI YOSHITSUGU ,  NAGANO HIDEKI ,  KANEKO SHINJIRO

IPC分类号： C23C2/02 ,  C21D9/46 ,  C22C18/04 ,  C22C38/00 ,  C22C38/38 ,  C22C38/58 ,  C23C2/06 ,  C23C2/28

CPC分类号： C23C2/02 ,  C21D8/0473 ,  C21D8/0478 ,  C21D9/48 ,  C22C38/02 ,  C22C38/04 ,  C22C38/34 ,  C22C38/38 ,  C23C2/06 ,  C23C2/28 ,  Y10T428/12799

摘要： PROBLEM TO BE SOLVED: To provide: a high-strength hot-dip galvanized steel sheet which uses, as a base material, a high-strength steel sheet including Si, Mn and Cr and has excellent plating adhesion; and a method for producing the high-strength hot-dip galvanized steel sheet.SOLUTION: In an oxidation furnace, steel containing Si, Mn and Cr is subjected to oxidation treatment at an exit side temperature T, and then the steel is subjected to reduction annealing and hot-dip galvanizing. Alternatively, the steel is further subjected to alloying treatment by being heated at a temperature of 460-600°C for 10-60 seconds. The exit side temperature T satisfies the following expressions. A=0.015T-7.6 (when T≥507°C), A=0 (when T≤506°C), B=0.0063T-2.8 (when T≥445°C), B=0 (when T≤444°C) and [Si]+A×[Cr]≤B, wherein [Si]: Si mass% in the steel, and [Cr]: Cr mass% in the steel.

摘要翻译： 要解决的问题：提供：使用包含Si，Mn和Cr的高强度钢板作为基材的高强度热浸镀锌钢板，并且具有优异的电镀附着力; 以及高强度热浸镀锌钢板的制造方法。 解决方案：在氧化炉中，在出口侧温度T下对含有Si，Mn和Cr的钢进行氧化处理，然后对钢进行还原退火和热浸镀锌。 或者，通过在460-600℃的温度下加热10-60秒，进一步进行合金化处理。 出口侧温度T满足以下表达式。 A = 0.015T-7.6（当T≥507℃时），A = 0（当T≤506℃时），B = 0.0063T-2.8（当T≥445℃时），B = 0（当T≤444 ℃）和[Si] + A×[Cr]≤B，其中[Si]：钢中的Si质量％，钢中的[Cr]：Cr质量％。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012229466A

公开(公告)日：2012-11-22

申请号：JP2011097912

申请日：2011-04-26

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： HASEGAWA HIROSHI ,  KANEKO SHINJIRO ,  NAGATAKI YASUNOBU

IPC分类号： C22C38/00 ,  C21D9/46 ,  C22C38/06 ,  C22C38/58 ,  C23C2/06

摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-dip galvanized steel sheet excellent in formability and shape fixability, whose tensile strength (TS) is ≥1180 MPa, total elongation (EL) is ≥14%, hole expansion rate (λ) is ≥30%, and yield ratio (YR) is ≤70%; and to provide a method of manufacturing the same.SOLUTION: The high-strength hot-dip galvanized steel sheet excellent in formability and shape fixability has a component composition that contains, by mass%, 0.10-0.35% C, 0.5-3.0% Si, 1.5-4.0% Mn, ≤0.100% P, ≤0.02% S, and 0.010-0.5% Al with the balance being Fe and unavoidable impurities, and has a microstructure that includes, by area ratio, 0-5% of polygonal ferrite, ≥5% of bainitic ferrite, 5-20% of martensite, 30-60% of tempered martensite, and 5-20% of retained austenite, while the average grain size of former austenite is ≤15 μm.

摘要翻译： 要解决的问题：为了提供拉伸强度（TS）≥1180MPa，总伸长率（EL）≥14％，成形性和形状固定性优异的高强度热浸镀锌钢板，孔膨胀 率（λ）≥30％，收率（YR）≤70％; 并提供其制造方法。 解决方案：成形性和形状定形性优异的高强度热浸镀锌钢板具有以质量％计含有0.10-0.35％C，0.5-3.0％Si，1.5-4.0％Mn， ≤0.100％P，≤0.02％S和0.010-0.5％Al余量为Fe和不可避免的杂质，并且具有包括面积比为0-5％的多边形铁素体的组织，≥5％的贝氏体铁素体 ，5-20％的马氏体，30-60％的回火马氏体和5-20％的残余奥氏体，而前奥氏体的平均晶粒尺寸为≤15μm。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012012672A

公开(公告)日：2012-01-19

申请号：JP2010150893

申请日：2010-07-01

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： SUGIHARA REIKO ,  SHIMIZU TETSUO ,  MEGA TETSUYA ,  KANEKO SHINJIRO ,  YAMASHITA TAKAKO

IPC分类号： C22C38/00 ,  C21D9/46 ,  C22C38/14 ,  C22C38/60

摘要： PROBLEM TO BE SOLVED: To provide a cold-rolled steel sheet which is used for an exterior panel of an automobile and is soft and excellent in chemical conversion treatment.SOLUTION: On the surfaces of both faces of the steel sheet, the X-ray strength of {100} face in the direction parallel to the sheet surface, is ≥2.5 by the random intensity ratio. By specifying it like this, a large amount of the {100} faces of un-recrystallized particles exist on the surface, and the change in pH near the surface in a phosphoric acid water solution becomes large in a short time, and formation of the chemical conversion crystal is accelerated to result in excellent in chemical conversion properties. In addition, for making such a texture distribution as this, a solid solution Ti involves, and it is preferable that when Ti: 0.01-0.1%, and Ti*=(Ti%)-3.4×(N%)-1.5×(S%)-4×(C%), it is included within a range satisfying Ti*>0.007.

摘要翻译： 要解决的问题：提供一种用于汽车外部面板的冷轧钢板，并且柔软且优异的化学转化处理。

解决方案：在钢板两面的表面上，与片表面平行的方向的X射线强度按照随机强度比≥2.5。 通过这样指定，表面上存在大量未再结晶粒子的面积，磷酸水溶液表面附近的pH变化在短时间内变大，形成化学物质 转化晶体被加速以导致优异的化学转化性能。 此外，为了进行这样的质地分布，固溶Ti涉及，优选当Ti：0.01〜0.1％，Ti * =（Ti％）-3.4×（N％）-1.5×（ S％）-4×（C％），包含在满足Ti *> 0.007的范围内。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012012670A

公开(公告)日：2012-01-19

申请号：JP2010150891

申请日：2010-07-01

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： KANEKO SHINJIRO ,  SUGIHARA REIKO ,  MEGA TETSUYA ,  SHIMIZU TETSUO ,  YAMASHITA TAKAKO

IPC分类号： C22C38/00 ,  B21B3/00 ,  C21D9/48 ,  C22C38/14 ,  C22C38/60

摘要： PROBLEM TO BE SOLVED: To provide a cold-rolled steel sheet that is used for an automobile, especially a press component requiring drawability, and has high slidability.SOLUTION: On both surfaces of the steel sheet, (100) face X-ray random intensity ratio in a direction parallel to the sheet face is 2.5 or more. The half value width of a (100) face X-ray diffraction peak at the surface is 0.15° or more. The steel sheet having such a texture distribution has a distribution of high hardness in a superficial layer of the surface, so that the sliding resistance is small in a state where the contact pressure is applied. When an outer panel of the automobile is press-formed, deep drawability is improved by reducing the frictional resistance when it slides with a die part of a die. In order to produce such a texture distribution, solid solution Ti is related. When Ti: 0.01-0.1%, and Ti*=(Ti%)-3.4×(N%)-1.5×(S%)-4×(C%), preferably, solid solution Ti is contained in a range satisfying Ti*>0.007.

摘要翻译： 要解决的问题：提供一种用于汽车的冷轧钢板，特别是需要可拉伸性的冲压部件，并且具有高的滑动性。 解决方案：在钢板的两个表面上，（100）在平行于纸面的方向上的X射线随机强度比为2.5以上。 表面（100）面X射线衍射峰的半值宽度为0.15°以上。 具有这种质地分布的钢板在表面的表面层中具有高硬度的分布，使得在施加接触压力的状态下滑动阻力小。 当汽车的外板被冲压成形时，通过在与模具的模具部分一起滑动时减小摩擦阻力来提高深冲性。 为了产生这样的纹理分布，固溶Ti是相关的。 当Ti：0.01〜0.1％，Ti * =（Ti％）3.4×（N％）-1.5×（S％）-4×（C％）时，优选固溶Ti包含在满足Ti *> 0.007。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011168861A

公开(公告)日：2011-09-01

申请号：JP2010035704

申请日：2010-02-22

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： NAKAGAITO TATSUYA ,  NAGATAKI YASUNOBU ,  KANEKO SHINJIRO ,  KAWASAKI YOSHIYASU ,  HASEGAWA HIROSHI

IPC分类号： C22C38/00 ,  B21B3/00 ,  C21D9/46 ,  C22C38/06 ,  C22C38/58

摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot rolled steel sheet which has a strength (TS) of 590 MPa or more and is excellent in extensibility and formability for extension flange, and to provide a method of manufacturing the high-strength hot rolled steel sheet.
SOLUTION: The high-strength hot rolled steel sheet has a composition containing, by mass, 0.05 to 0.3% C, 0.3 to 2.5% Si, 0.5 to 3.5% Mn, 0.003 to 0.100% P, ≤0.020% and 0.010 to 0.5% Al, and the balance iron with inevitable impurities, As for the structure, the area ratio of a ferrite phase is ≥20%, that of a tempered martensite phase is 10 to 60%, that of a martensite phase is 0 to 10% and the volume ratio of a retained austenite phase is 3 to 15%.
COPYRIGHT: (C)2011,JPO&INPIT

摘要翻译： 解决问题的方案为了提供强度（TS）为590MPa以上，伸长性和伸长性的成形性优异的高强度热轧钢板，并且提供制造高 - 强度热轧钢板。 解决方案：高强度热轧钢板具有以质量计含有C：0.05〜0.3％，Si：0.3〜2.5％，Mn：0.5〜3.5％，0.003〜0.100％P，≤0.020％，0.010 至0.5％Al，剩余铁与不可避免的杂质相比，对于结构，铁素体相的面积比为≥20％，回火马氏体相的面积比为10〜60％，马氏体相的面积比为0〜 10％，残余奥氏体相的体积比为3〜15％。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010236027A

公开(公告)日：2010-10-21

申请号：JP2009085594

申请日：2009-03-31

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： MASUOKA HIROYUKI ,  KANEKO SHINJIRO ,  SUGIMOTO YOSHIHARU ,  TADA MASAHIKO ,  HOSHINO KATSUYA ,  MAKISUI YOICHI ,  YOSHIMI NAOTO ,  NAKAGAITO TATSUYA

IPC分类号： C22C38/00 ,  C21D9/46 ,  C22C38/38 ,  C22C38/58 ,  C23C2/06 ,  C23C2/26 ,  C23C2/40

摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot dip galvanized steel sheet excellent in formability, which has a TS (Tensile Strength) of ≥780 MPa and also has excellent elongation El, and has a TS×EL of ≥18,000.
SOLUTION: A hot dip galvanized layer is provided on a steel sheet which has a component composition containing, by mass%, C: 0.03-0.15%, Si: 0.8-2.5%, Mn: 1.0-3.0%, P: 0.001-0.05%, S: 0.0001-0.01%, Al: 0.001-0.1%, N: 0.0005-0.01% and Cr: 0.1-2.0%, with the balance comprising Fe and inevitable impurities, and has a microstructure containing, by an area ratio, 50% or more of a ferritic phase and 10% or more of a martensitic phase. Further, on the surface of the hot dip galvanized layer, 3Zn(OH)2*ZnSO4*3-5H2O is formed in an average thickness of 10 nm or more.
COPYRIGHT: (C)2011,JPO&INPIT

摘要翻译： 要解决的问题：为了提供优异的成型性的高强度热浸镀锌钢板，其TS（拉伸强度）≥780MPa，并且还具有优异的伸长率E1，TS×EL为≥ 18,000。 解决方案：在钢板上设置热浸镀锌层，其组成成分按C：0.03〜0.15％，Si：0.8〜2.5％，Mn：1.0〜3.0％，P： 0.001-0.05％，S：0.0001-0.01％，Al：0.001-0.1％，N：0.0005-0.01％，Cr：0.1〜2.0％，余量由Fe和不可避免的杂质组成， 50％以上的铁素体相和10％以上的马氏体相。 此外，在热镀锌层的表面上形成平均厚度为10nm以上的3Zn（OH）2 * ZnSO 4 * 3-5H 2 O。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2009185361A

公开(公告)日：2009-08-20

申请号：JP2008028455

申请日：2008-02-08

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： KANEKO SHINJIRO ,  OKUDA KANEHARU ,  SHIMIZU TETSUO ,  MORIYASU NAGAAKI ,  WATABE MASAHIDE

IPC分类号： C22C38/00 ,  B21B3/00 ,  C21D9/46 ,  C22C38/14

CPC分类号： C22C38/04 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/46 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/06 ,  C22C38/14

摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-rolled steel sheet which has tensile strength (TS) of 540-780 MPa, and is excellent in the strength uniformity wherein variance in strength is small by using an inexpensive Ti series general-using steel sheet.
SOLUTION: The component composition of this steel sheet contains, by mass, 0.05-0.12% C, ≤0.5% Si, 0.8-1.8% Mn, ≤0.030% P, ≤0.01% S, 0.005-0.1% Al, ≤0.01% N, 0.030-0.080% Ti and the balance Fe with inevitable impurities. And, in the structure, a polygonal-ferrite is contained in faction ratio of ≥70% and the quantity of Ti existing in the precipitation having size of

摘要翻译： 待解决的问题：提供一种拉伸强度（TS）为540〜780MPa的高强度热轧钢板，其强度均匀性优异，强度变化小，通过使用廉价的Ti 系列通用钢板。 该钢板的组成成分含有0.05-0.12％C，≤0.5％Si，0.8-1.8％Mn，≤0.030％P，≤0.01％S，0.005-0.1％Al， ≤0.01％N，0.030-0.080％Ti，余量为Fe与不可避免的杂质。 并且，在该结构中，以70％以上的比例含有多边形铁素体，并且存在于尺寸<20nm的析出物中的Ti的量为通过下式（1（1）计算的Ti *值的≥50％ ）... T * = [Ti] -48 / 14×[N]。 其中，[Ti]和[N]表示钢板中Ti和N的成分组成（质量％）。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2013177673A

公开(公告)日：2013-09-09

申请号：JP2012266240

申请日：2012-12-05

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： KIMURA HIDEYUKI ,  TAKASHIMA KATSUTOSHI ,  KANEKO SHINJIRO

IPC分类号： C22C38/00 ,  C21D9/46 ,  C22C38/14 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28

CPC分类号： C23C2/02 ,  B32B15/013 ,  C21D1/26 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D9/46 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/38 ,  C22C38/58 ,  C22C38/60 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/285 ,  C25D3/22 ,  C25D5/36 ,  C25D5/38 ,  C25D5/50 ,  Y10T428/12799 ,  Y10T428/12972

摘要： PROBLEM TO BE SOLVED: To provide a high strength hot-dip galvanized steel sheet having TS≥590 MPa, in which a high yield ratio (YR) and a high bake hardening amount (BH amount) are secured from a view-point of improving collosion resistance performance and the quality, particularly the uniformity of the strength and the elongation in a coil, is excellent; and to provide a method for producing the steel sheet.SOLUTION: A steel sheet includes, by mass%, >0.060% to 0.13% C, 0.01-0.7% Si, 1.0-3.0% Mn, 0.005-0.100% P, ≤0.010% S, 0.005-0.100% sol. Al, ≤0.0100% N, 0.005-0.10% Nb, 0.03-0.15% Ti, and satisfies the relation of (Nb/93+Ti*/48)/(C/12) >0.08 (wherein, Ti*=Ti-(48/14)N-(48/32)S), and has ≤15 μm average crystal grain diameter which includes ≥80% ferrite structure and 1-15% martensite structure as the area ratio.

摘要翻译： 要解决的问题：提供一种TS≥590MPa的高强度热浸镀锌钢板，从提高的观点来看，确保了高收率（YR）和高烘烤硬化量（BH量） 耐爆性能和质量，特别是线圈强度和伸长率的均匀性优异; 并提供一种钢板的制造方法。本发明的钢板以质量％计含有C：0.060〜0.13％，Si：0.01〜0.7％，Mn：1.0〜3.0％，P：≤0.010 ％S，0.005-0.100％溶胶。 Al，≤0.0100％N，0.005-0.10％Nb，0.03-0.15％Ti，满足（Nb / 93 + Ti * / 48）/（C / 12）> 0.08（其中，Ti * = Ti- （48/14）N-（48/32）S），并且具有≤15μm的平均晶粒直径，其包括≥80％的铁素体结构和1-15％的马氏体结构作为面积比。

公开(公告)号：JP2013081990A

公开(公告)日：2013-05-09

申请号：JP2011224441

申请日：2011-10-12

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： SAKURAI MICHITAKA ,  KANEKO SHINJIRO ,  HIRAMATSU SEI ,  MATSUURA HISAYUKI ,  KAMIOKA SATOSHI

IPC分类号： B21B45/02 ,  B21B1/26 ,  B21B43/00 ,  B21C47/24 ,  B21C47/26 ,  C21D9/46 ,  C22C38/00 ,  C22C38/04

摘要： PROBLEM TO BE SOLVED: To provide a method for cooling a hot-rolled coil that can effectively prevent plate thickness variation occurring when performing cold rolling of the hot-rolled coil which is a base material of a high-strength steel sheet, and to provide a method for manufacturing the hot-rolled coil by the method, and a cooling apparatus used in these methods.SOLUTION: When the hot-rolled coil immediately after winding a hot-rolled steel strip subjected to hot rolling is cooled in a conveyor device for conveying the hot-rolled coil and/or in a coil placing space, the hot-rolled coil is cooled to equalize the cooling speed of an abutting portion and a non-abutting portion of the outer peripheral surface of the hot-rolled coil against a coil placing base or the ground by a method of heating the abutting portion with respect to the non-abutting portion of the outer peripheral surface of the hot-rolled coil against the coil placing base or the ground, or by a method of forcibly cooling the non-abutting portion with respect to the abutting portion of the outer peripheral surface of the hot-rolled coil against the coil placing base or the ground.

摘要翻译： 解决的问题：为了提供一种用于冷却能够有效地防止作为高强度钢板的基材的热轧线圈进行冷轧时产生的板厚变化的热轧板卷的冷却方法， 并提供一种通过该方法制造热轧线圈的方法，以及在这些方法中使用的冷却装置。 解决方案：在热轧卷绕热轧钢卷之后的热轧板卷在用于输送热轧卷材和/或卷材放置空间的输送装置中冷却时，热轧 将线圈冷却，使热轧线圈的外周面的抵接部和非抵接部的冷却速度相对于线圈放置基座或地面的加热抵抗部的方法相等， 热轧线圈的外周面的相对于线圈放置基座或地面的凹部，或者通过强制冷却非抵接部相对于热轧线圈的外周面的抵接部的方法， 卷绕线圈抵靠线圈放置基座或地面。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012092358A

公开(公告)日：2012-05-17

申请号：JP2010237848

申请日：2010-10-22

申请人： Jfe Steel Corp ,  Jfeスチール株式会社

发明人： KANEKO SHINJIRO ,  NAKAGAITO TATSUYA ,  NAGATAKI YASUNOBU

IPC分类号： C22C38/00 ,  B21D22/20 ,  C21D9/46 ,  C22C38/06 ,  C22C38/38

摘要： PROBLEM TO BE SOLVED: To provide a thin steel sheet for warm forming or the like, exhibiting strength enhancement after forming to achieve high member strength while exhibiting high ductility to have excellent press formability by specifically being subjected to warm forming.SOLUTION: The thin steel sheet for warm forming has a composition of, in terms of mass%, 0.1-0.3% of C, 0.5-2.5% of Si, 1.5-3.5% of Mn, 0.001-0.05% of P, 0.0001-0.01% of S, 0.001-0.1% of Al, 0.0005-0.01% of N, and the balance of Fe and unavoidable impurities. A steel structure includes, in terms of areal proportion, 40% or more of a polygonal ferrite phase, 5% or more of a bainitic phase and 3% or more of a retained austenite phase.

摘要翻译： 解决问题：为了提供一种用于热成型等的薄钢板，在成形后具有强度提高，通过特别进行热成型，具有高的延展性，具有优异的冲压成形性。 ＆lt; P＆gt;解决方案：用于温热成型的薄钢板的组成为质量％：C：0.1-0.3％，Si：0.5-2.5％，Mn：1.5-3.5％，P：0.001-0.05％ ，0.0001-0.01％的S，0.001-0.1％的Al，0.0005-0.01％的N，余量的Fe和不可避免的杂质。 钢结构按面积比例包括多边形铁素体相的40％以上，贝氏体相5％以上，残留奥氏体相3％以上。 版权所有（C）2012，JPO＆INPIT