专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2007327141A Steel slab heating method 审中-公开
标题翻译：钢板加热方法
公开(公告)号：JP2007327141A
公开(公告)日：2007-12-20
申请号：JP2007179774
申请日：2007-07-09
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： HINO YOSHIMICHI , FUKUMURA MASARU , YAMAMOTO MASAAKI , KIZU TARO , NAGATAKI YASUNOBU
IPC分类号： C21D9/00
摘要： PROBLEM TO BE SOLVED: To provide a steel slab heating method capable of preventing any defect on a surface of a steel slab.
SOLUTION: In the heating method of a steel slab 3 prior to the hot working of steel, when the surface temperature of the steel slab is raised at least from 500°C to 900°C, the steel slab is heated under the conditions that the surface temperature rise rate of the steel slab is ≤4°C/minute, the temperature gradient from the surface of the steel slab in the depth direction is set to be ≤3°C/mm, and the differential temperature rise rate between a center of the thickness of the steel slab and the surface of the steel slab is ≤2°C/minute. During the temperature rise, the temperature of a furnace is once dropped to a low temperature from a high temperature, and again raised to a high temperature.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够防止钢坯表面的任何缺陷的钢板加热方法。解决方案：在钢的热加工之前的钢坯3的加热方法中，当钢坯的表面温度升高至少从500℃至900℃时，钢坯在钢坯的表面温度升高速度为4℃/分钟以下的条件，从钢板表面的深度方向的温度梯度设定为≤3℃/ mm，差速升温速度在钢坯厚度的中心与钢坯的表面之间≤2℃/分钟。在升温期间，炉的温度一旦从高温下降到低温，再升温到高温。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2007277729A High strength hot-dip galvanized steel sheet and production method therefor 有权
标题翻译：高强度热镀锌钢板及其生产方法
公开(公告)号：JP2007277729A
公开(公告)日：2007-10-25
申请号：JP2007153861
申请日：2007-06-11
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： NAGATAKI YASUNOBU , KITANO FUSAHITO , SATO KENTARO , IWABUCHI MASAHIRO , GAMA AKIRA
IPC分类号： C22C38/00 , C21D9/46 , C22C38/38 , C23C2/06 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a high strength hot-dip galvanized steel sheet which is not fractured in the HAZ (heat affected zone) of the weld zone on forming and has formability similar to that of a single sheet.
SOLUTION: The high strength hot-dip galvanized steel sheet contains, as chemical components, 0.04 to 0.25% C, ≤0.7% Si, 1.4 to 3.5% Mn, 0.05 to 1% Cr, ≤0.05% P, ≤0.01% S and 0.005 to 0.1% Nb, and the balance substantially Fe with inevitable impurities. The steel sheet also has a composite structure consisting of ferrite and a low temperature transformation phase having a mean grain size of ≤10 μm. The steel sheet can contain one or more elements selected from 0.05 to 1% Mo, 0.02 to 0.5% V, 0.005 to 0.05% Ti and 0.0002 to 0.002% B as well.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种在成形时在焊接区的HAZ（热影响区）中不会断裂的高强度热镀锌钢板，并且具有与单片相似的成形性。
解决方案：高强度热浸镀锌钢板含有0.04〜0.25％C，≤0.7％Si，1.4〜3.5％Mn，0.05〜1％Cr，≤0.05％P，≤0.01 ％S和0.005〜0.1％Nb，余量基本上为Fe与不可避免的杂质。钢板还具有由铁素体和平均粒径≤10μm的低温相变相组成的复合结构。该钢板也可以含有选自0.05〜1％Mo，0.02〜0.5％V，0.005〜0.05％Ti，0.0002〜0.002％B的一种或多种元素。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2007239012A Method for producing high strength hot dip galvanized steel sheet 有权
标题翻译：生产高强度热镀锌钢板的方法
公开(公告)号：JP2007239012A
公开(公告)日：2007-09-20
申请号：JP2006062335
申请日：2006-03-08
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KONO TAKASHI , NORO HISATO , TOBIYAMA YOICHI , KIMURA YUKIO , NAGATAKI YASUNOBU
IPC分类号： C23C2/02 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/06 , C23C2/06 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a method where a high strength hot dip galvanized steel sheet in which surface concentration by Si based oxide is effectively suppressed, and having surface appearance free from unplating and excellent plating adhesion can be stably produced at high productivity even in the case of a high strength steel sheet comprising Si at a high concentration (≥1 mass%).
SOLUTION: The method for producing a high strength hot dip galvanized steel sheet is provided with: a step where roughness in which the mean spacing S of local summits is ≤20 μm and the arithmetic mean roughness Ra is ≥0.2 μm is imparted to the surface of a steel comprising 1 to 3 mass% Si; a step where the steel with the roughness imparted is rolled; a step where the rolled steel is subjected to oxidation heat treatment, and is then subjected to reduction annealing heat treatment; and a step where the heat-treated steel is subjected to hot dip galvanizing.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种方法，其中可以有效地抑制通过Si基氧化物的表面浓度被有效抑制并且表面外观没有镀层和优异的电镀粘合力的高强度热浸镀锌钢板，即使在高浓度（≥1质量％）的Si的高强度钢板的情况下也是如此。解决方案：高强度热浸镀锌钢板的制造方法具有以下步骤：赋予局部顶点的平均间隔S为≤20μm，算术平均粗糙度Ra为≥0.2μm的粗糙度包含1〜3质量％的Si的钢的表面; 轧制具有粗糙度的钢的步骤; 对轧制钢进行氧化热处理，然后进行还原退火热处理的工序; 以及对经过热处理的钢进行热浸镀锌的步骤。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2007154283A High strength steel sheet having excellent formability and shape fixability 有权
标题翻译：具有优异的可塑性和形状可变性的高强度钢板
公开(公告)号：JP2007154283A
公开(公告)日：2007-06-21
申请号：JP2005353698
申请日：2005-12-07
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： TAKAGI SHUSAKU , MATSUDA HIROSHI , NAKAGAITO TATSUYA , NAGATAKI YASUNOBU
IPC分类号： C22C38/00 , C21D9/46 , C22C38/06 , C22C38/58
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a high strength steel sheet which enables the residual stress inside a formed component to be reduced while maintaining the high formability of TRIP steel, thus enables spring back of the formed component to be reduced. SOLUTION: The high strength steel sheet having excellent formability and shape fixability has a structure mainly made up of a ferrite phase of 20 to 97% in terms of a C volume fraction and a residual austenite phase of ≥3%, wherein the ratio of the crystal grains having an aspect ratio of ≤2.5 in the part other than the ferrite phase is 50 to 95%, and preferably containing, by mass, 0.05 to 0.30% C, ≤2.0% Si, 0.8 to 3.0% Mn, 0.003 to 0.1% P, ≤0.01% S, 0.01 to 2.50% Al and ≤0.007% N, and wherein Si and Al satisfy the relation of Si+Al≥0.50 mass%. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供能够在保持TRIP钢的高成形性的同时减少成形部件内的残余应力的高强度钢板，由此可以使成形部件的回弹减少。解决方案：具有优异成形性和定形性的高强度钢板具有主要由C体积分数和残余奥氏体相的≥3％的铁素体相为20〜97％的结构，其中，在铁素体相以外的部分中，纵横比≤2.5的晶粒的比例为50〜95％，优选含有0.05〜0.30％的C，≤2.0％的Si，0.8〜3.0％的Mn， 0.003〜0.1％P，≤0.01％S，0.01〜2.50％Al，≤0.007％N，Si和Al满足Si +Al≥0.50质量％的关系。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2005200766A Method for producing high strength alloyed zinc hot dip galvanized steel sheet having excellent stability of mechanical property 有权
标题翻译：生产具有机械性能优异稳定性的高强度合金锌合金镀锌钢板的方法
公开(公告)号：JP2005200766A
公开(公告)日：2005-07-28
申请号：JP2004364860
申请日：2004-12-16
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MATSUDA HIROSHI , TAIRA SHOICHIRO , ONO KEISUKE , URABE TOSHIAKI , NAGATAKI YASUNOBU , TANAKA YASUSHI , SAKURAI MICHITAKA , SUGIMOTO YOSHIHARU
IPC分类号： C23C2/28 , C21D9/46 , C22C38/00 , C22C38/60 , C23C2/06 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a method for producing an alloyed zinc hot dip galvanized steel sheet in which the variation in mechanical properties is reduced.
SOLUTION: The zinc hot dip galvanized steel sheet has a chemical composition containing, in mass%, 0.05 to 0.30% C, 0.01 to 2.0% Si, 0.08 to 3.0% Mn, 0.003 to 0.1% P, 0 to 0.07% S, 0.01 to 2.5% Al, 0 to 0.007% N, and the balance Fe and inevitable impurities, and the time and temperature for the alloying treatment are controlled according to the formula:Si+Al≥1.5×10
-7 ×t
0.75 ×(T-465)
3 +0.117 where t represents the total time (sec) for which the steel sheet is held at ≥465(°C) when the plating layer on the steel sheet is alloyed, and T represents an average temperature T(°C) during the total time (sec) for which the steel sheet is held at ≥465(°C) when the plating layer on the steel sheet is alloyed.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种其中机械性能变化减小的合金化锌热浸镀锌钢板的制造方法。解决方案：锌热浸镀锌钢板具有以质量％计含有0.05〜0.30％C，0.01〜2.0％Si，0.08〜3.0％Mn，0.003〜0.1％P，0〜0.07％ S，0.01〜2.5％的Al，0〜0.007％的N，余量为Fe和不可避免的杂质，合金化处理的时间和温度根据下式进行控制：Si +Al≥1.5×10 -7 ×t 0.75 ×（T-465） 3 +0.117其中t表示钢板保持的总时间（秒）≥465（ ℃），并且T表示在钢板保持时的总时间（秒）为≥465（℃）时的平均温度T（℃），当镀层在钢板上合金化。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2005187939A High strength cold rolled steel sheet and method for production thereof 有权
标题翻译：高强度冷轧钢板及其生产方法
公开(公告)号：JP2005187939A
公开(公告)日：2005-07-14
申请号：JP2004337514
申请日：2004-11-22
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： ONO YOSHIHIKO , NAGATAKI YASUNOBU , TANAKA YASUSHI , HARADA KOZO , ANDO TOSHINORI , KITANO FUSAHITO
IPC分类号： B21B3/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/12 , C22C38/60
CPC分类号： C22C38/02 , C21D8/0236 , C21D8/0273 , C21D2211/005 , C22C38/04 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a high strength cold rolled steel sheet which has a tensile strength of 340 MPa or more, and has excellent resistance to planar strain and bulging characteristics, and to provide a method for production thereof.
SOLUTION: The high strength cold rolled steel sheet has a structure comprising ferrite grains having an average grain diameter of 10 μm or less, wherein, in the ferrite grain, Nb(C, N)'s having a diameter of 50 nm or more are present in an average number per unit area (average area density) of 7.0×10
-2 pieces/μm
2 , and along the grain boundary of the ferrite grain, a region is formed which has a width of 0.2 to 2.4 μm and has an average area density of NbC being 60% or less of an average area density of NbC deposited in the central portion of the ferrite grain. In the method for production thereof, slab heating temperature SRT (°C) is controlled to ≤1,350°C, and 1,050°C≤SRT≤{770+([sol.Al]-0.085)
0.24 ×820}°C is satisfied.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种拉伸强度为340MPa以上的高强度的冷轧钢板，并且具有优异的耐平面应变和膨胀特性，并提供其制造方法。解决方案：高强度冷轧钢板具有包括平均粒径为10μm以下的铁素体晶粒的结构，其中，在铁素体晶粒中，直径为50nm的Nb（C，N）以上的平均单位面积（平均面积密度）为7.0×10 -2 个/μm 2 ，沿着铁素体晶粒的晶界形成宽度为0.2〜2.4μm，NbC的平均面密度为铁素体晶粒中央部的NbC的平均面积密度的60％以下的区域。在其制造方法中，将板坯加热温度SRT（℃）控制在≤1.350℃，1,050℃≤SRT≤770+（[sol.Al] -0.085） 0.24 ×820 }℃。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2004285435A Hot dip galvanized steel sheet, and its production method 审中-公开
公开(公告)号：JP2004285435A
公开(公告)日：2004-10-14
申请号：JP2003080454
申请日：2003-03-24
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KITANO FUSAHITO , NAGATAKI YASUNOBU , IWABUCHI MASAHIRO , GAMA AKIRA
IPC分类号： C21D9/46 , C22C38/00 , C22C38/12 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a hot dip galvanized steel sheet which has excellent impact resisting performance optimum for an automobile structural component or the like.
SOLUTION: The hot dip galvanized steel sheet has a composition containing, by mass, 0.03 to 0.13% C, ≤0.7% Si, 2.0 to 3.5% Mn, ≤0.05% P, ≤0.01% S, 0.01 to 0.1% sol.Al, ≤0.005% N and 0.005 to 0.1% Nb, and, if required, comprising one or more kinds of metals selected from Cr, V, Ti and B, and the balance substantially Fe with inevitable impurities. The steel sheet has ferrite with a mean particle diameter of ≤5 μm and a low temperature transformed phase of ≤60% by volume, and is excellent in impact absorbability. After cold rolling, heating is performed in the range of Ac1 to 900°C, and, in a cooling stage after the heating, hot dip galvanizing treatment is performed.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2008214657A Cold-rolled high-tensile-strength steel sheet, high-tensile-strength galvanized steel sheet, and manufacturing method therefor 有权
标题翻译：高强度高强度钢板，高强度钢化钢板及其制造方法
公开(公告)号：JP2008214657A
公开(公告)日：2008-09-18
申请号：JP2007049647
申请日：2007-02-28
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KOBAYASHI TAKASHI , OKUDA KANEHARU , NAGATAKI YASUNOBU
IPC分类号： C22C38/00 , B21B3/00 , C21D9/46 , C22C38/12 , C22C38/58 , C23C2/06 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a cold-rolled high-tensile-strength steel sheet which is superior in drawability and secondary-working embrittlement resistance, and to provide a high-tensile-strength galvanized steel sheet and a manufacturing method therefor.
SOLUTION: This cold-rolled high-tensile-strength steel sheet has a component composition including 0.004% to 0.008% C, at most 0.1% Si, 0.5% to 2.5% Mn, 0.02% to 0.10% P, at most 0.02% S, 0.01% to 0.08% Al, at most 0.005% N, Nb in an amount of satisfying the expression of 1.0≤([Nb]/93)/([C]/12+[N]/14)≤3.0, wherein [Nb], [C] and [N] represent contents (mass%) of Nb, C and N, respectively, and the balance Fe with unavoidable impurities. Also, the sheet has a single phase structure of ferrite with a mean crystal grain size of 20 μm or smaller, in which the acicular ferrite occupies more than 95% by volume fraction. One part of the above Nb can be replaced by Ti.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：待解决的问题：提供一种拉伸性和二次加工脆性优异的冷轧高强度钢板，并提供一种高拉伸强度的镀锌钢板及其制造方法。解决方案：该冷轧高强度钢板具有以下成分组成：C：0.004〜0.008％，Si：0.1％以下，Mn：0.5〜2.5％，P：0.02〜0.10％ 0.02％S，0.01％〜0.08％的Al，至多0.005％的N，Nb的含量满足1.0≤（[Nb] / 93）/（[C] / 12 + [N] / 14）≤ 3.0，其中[Nb]，[C]和[N]分别表示Nb，C和N的含量（质量％），余量为不可避免的杂质。此外，该片材具有平均晶粒尺寸为20μm以下的铁素体的单相结构，其中针状铁素体占体积分数大于95体积％。上述Nb的一部分可以被Ti代替。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2008214656A Cold-rolled high-tensile-strength steel sheet, high-tensile-strength galvanized steel sheet, and manufacturing method therefor 有权
标题翻译：高强度高强度钢板，高强度钢化钢板及其制造方法
公开(公告)号：JP2008214656A
公开(公告)日：2008-09-18
申请号：JP2007049642
申请日：2007-02-28
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KOBAYASHI TAKASHI , OKUDA KANEHARU , NAGATAKI YASUNOBU
IPC分类号： C22C38/00 , B21B1/26 , B21B3/00 , C21D9/46 , C22C38/26 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To provide a cold-rolled high-tensile-strength steel sheet which is superior in formability and secondary-working embrittlement resistance, and to provide a high-tensile-strength galvanized steel sheet and a manufacturing method therefor.
SOLUTION: This cold-rolled high-tensile-strength steel sheet has a component composition including 0.004% to 0.008% C, at most 0.1% Si, 0.5% to 1.5% Mn, 0.02% to 0.10% P, at most 0.02% S, 0.01% to 0.08% Al, at most 0.005% N, Nb in an amount of satisfying the expression of 1.0≤([Nb]/93)/([C]/12+[N]/14)≤3.0, wherein [Nb], [C] and [N] represent contents (mass%) of Nb, C and N, respectively, and the balance Fe with unavoidable impurities. Also, the sheet has a single phase structure of ferrite, in which the ferrite includes acicular ferrite and polygonal ferrite, while the acicular ferrite occupies 50 to 95% by volume fraction, and the mean crystal grain size is 20 μm or smaller. One part of the above Nb can be replaced by Ti.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种成型性和二次加工耐脆性优异的冷轧高强度钢板，提供一种高强度热镀锌钢板及其制造方法。解决方案：该冷轧高强度钢板具有以下成分组成：C：0.004〜0.008％，Si：0.1％以下，Mn：0.5〜1.5％，P：0.02〜0.10％ 0.02％S，0.01％〜0.08％的Al，至多0.005％的N，Nb的含量满足1.0≤（[Nb] / 93）/（[C] / 12 + [N] / 14）≤ 3.0，其中[Nb]，[C]和[N]分别表示Nb，C和N的含量（质量％），余量为不可避免的杂质。此外，片材具有铁素体的单相结构，其中铁素体包括针状铁素体和多边形铁素体，而针状铁素体占体积分数为50〜95体积％，平均结晶粒径为20μm以下。上述Nb的一部分可以被Ti代替。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2007119842A Method for producing high-strength galvanized steel sheet excellent in stretch-flanging property 有权
标题翻译：用于生产高强度钢化板的方法
公开(公告)号：JP2007119842A
公开(公告)日：2007-05-17
申请号：JP2005313102
申请日：2005-10-27
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： NAGATAKI YASUNOBU , KAWABE HIDENAO , SAKURAI MICHITAKA , MAITAKE KOJI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/12 , C22C38/38 , C23C2/06
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a high strength galvanized steel sheet excellent in a stretch-flanging property even while having a DP (dual phase) structure profitable to the ductility.
SOLUTION: After casting the steel composed by mass% of 0.03-0.15% C, ≤2% Si, 1.7-3% Mn, ≤0.05% P, ≤0.001% S, 0.005-0.1% Nb and the balance Fe with inevitable impurities, a hot-rolling finishing temperature FT is controlled to the temperature FT
min or higher, defined with (1) formula, and in the continuous galvanizing line, the galvanization or further, galvanize-alloying are applied. FT
min (°C)=500×Nb+20×Si+50×C+860...(1) (wherein, Nb, Si, C are mass% in each component).
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供即使在具有对延展性有利的DP（双相）结构的情况下也能制造拉伸凸缘性优异的高强度镀锌钢板的方法。
解决方案：铸造由0.03-0.15％C，≤2％Si，1.7-3％Mn，≤0.05％P，≤0.001％S，0.005-0.1％Nb和余量Fe组成的钢不可避免的杂质，热轧终轧温度FT被控制为由（1）式定义的温度FT min 或更高，并且在连续镀锌生产线中，镀锌或进一步镀锌合金被应用。（℃）= 500×Nb + 20×Si + 50×C + 860 ...（1）（其中，Nb，Si，C为各成分的质量％）。版权所有（C）2007，JPO＆INPIT

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式