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    High strength galvanized steel plate having excellent workability and production method therefor
    94.
    发明专利
    High strength galvanized steel plate having excellent workability and production method therefor 有权
    高强度钢化板，具有优异的可加工性及其生产方法

    公开(公告)号：JP2014009377A

    公开(公告)日：2014-01-20

    申请号：JP2012146607

    申请日：2012-06-29

    申请人： Jfe Steel Corp ,  Jfeスチール株式会社

    发明人： HASEGAWA HIROSHI ,  KANEKO SHINJIRO ,  MATSUDA HIROSHI ,  TAKENAKA MASANORI

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

    摘要： PROBLEM TO BE SOLVED: To provide a high strength galvanized steel plate having excellent workability of TS:980 MPa or more and TS×UEL:15000 MPa % or more suitable for a material of an automobile component, and a production method therefor.SOLUTION: A high strength galvanized steel plate excellent in workability contains a micro structure including a component composition consisting of, by mass%, C:0.15 to 0.40%, Si:0.5 to 3.0%, Al:0.010 to 3.000%, Mn:1.5 to 4.0%, P:0.100% or less, S:0.020% or less, Sn:0.01 to 0.50% and the balance of Fe and inevitable impurities, and a bainitic ferrite having an area ratio of 3 to 68%, a martensite having the sum of an area ratio of 10 to 65% and a tempering martensite, and a retained austenite having an area ratio of 5% or more.

    摘要翻译： 要解决的问题：提供一种TS：980MPa以上，TS×UEL：15000MPa％以上的加工性优异的高强度镀锌钢板，适用于汽车部件的材料及其制造方法。解决方案： 优异的加工性优异的高强度镀锌钢板包含由以质量％计含有C：0.15〜0.40％，Si：0.5〜3.0％，Al：0.010〜3.000％，Mn：1.5〜4.0 ％，P：0.100％以下，S：0.020％以下，Sn：0.01〜0.50％，余量为Fe和不可避免的杂质，以及面积比为3〜68％的贝氏体铁素体，马氏体的总和 面积率为10〜65％的回火马氏体，面积率为5％以上的残留奥氏体。

    High-strength cold-rolled steel sheet excellent in workability bending
    96.
    发明专利
    High-strength cold-rolled steel sheet excellent in workability bending 有权

    公开(公告)号：JP5342911B2

    公开(公告)日：2013-11-13

    申请号：JP2009087407

    申请日：2009-03-31

    申请人： 株式会社神戸製鋼所

    发明人： 哲志 星加 ,  裕一 二村 ,  正明 三浦 ,  弘昭 松元 ,  裕己 太田

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

    摘要： PROBLEM TO BE SOLVED: To provide a high-strength cold-rolled steel sheet in which fracture starting from inclusions is suppressed in bending, and which has excellent bending workability. SOLUTION: In the high-strength cold-rolled steel sheet excellent in bending workability, a steel sheet has a composition satisfying 0.05-0.3% C, 3.0% or less Si (excluding 0%), 1.5-3.5% Mn, 0.1% or less P (excluding 0%), 0.05% or less S (excluding 0%), and 0.15% or less Al (excluding 0%), with the remainder including iron and inevitable impurities, the steel structure is a composite structure including a ferrite structure and a martensite-containing second phase, and, in a surface region from a surface to a depth one-tenth the gage of the steel sheet, the number density of n-ary groups of inclusions is 120 or less per 100 cm 2 of a rolling plane, in which each of the n-ary groups of inclusions is determined by an n-th determination as specified, and, in each of the n-ary groups of inclusions, the distance in a steel sheet rolling direction between outermost surfaces of two outermost particles of the n-ary group of inclusions is 80 μm or more. COPYRIGHT: (C)2011,JPO&INPIT

    Method of manufacturing hot dip galvanized steel sheet of high strength, and hot dip galvanized steel sheet of high strength
    97.
    发明专利
    Method of manufacturing hot dip galvanized steel sheet of high strength, and hot dip galvanized steel sheet of high strength 有权
    高强度热镀锌钢板的制造方法和高强度热镀锌钢板

    公开(公告)号：JP2013194271A

    公开(公告)日：2013-09-30

    申请号：JP2012061314

    申请日：2012-03-19

    申请人： Jfe Steel Corp ,  Jfeスチール株式会社

    发明人： FUSHIWAKI YUSUKE ,  KAWASAKI YOSHIYASU ,  NAGATAKI YASUNOBU

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

    CPC分类号： B32B15/013 ,  C21D1/26 ,  C21D8/0284 ,  C21D9/46 ,  C21D9/561 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C30/005 ,  Y10T428/12799

    摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a hot dip galvanized steel sheet of high strength using a steel sheet containing Si and Mn as a base material, and excellent in plating appearance, plating separation resistance in a high degree of working, and workability, and the hot dip galvanized steel sheet of high strength.SOLUTION: A hot dip galvanized steel sheet of high strength is manufactured to have a zinc plated layer with 20-120 g/mof plating deposition amount per one face, onto a surface of a steel sheet containing C: 0.03-0.35%, Si: 0.01-0.50%, Mn: 3.6-8.0%, Al: 0.001-1.000%, P≤0.10%, and S≤0.010%, by mass, with the remainder comprising Fe and inevitable impurities. The highest reach temperature of the steel sheet in an annealing furnace is 600°C or more to 750°C or less therein, when executing annealing and hot dip galvanizing treatment to the steel sheet in a continuous type hot dip zincing facility, a steel sheet passing time in the temperature zone of 600°C or more to 750°C or less is within the range of 30 sec or more to 10 min, and a dewpoint in atmosphere is brought into -10°C or more.

    摘要翻译： 要解决的问题：提供一种使用含有Si和Mn作为基材的钢板制造高强度的热浸镀锌钢板的方法，并且具有优异的电镀外观，高工作时的耐电镀分离性，以及 可加工性以及高强度的热浸镀锌钢板。制造方法：制造高强度的热浸镀锌钢板，使每一面具有20-120g / mof电镀沉积量的镀锌层， 包含C：0.03-0.35％，Si：0.01-0.50％，Mn：3.6-8.0％，Al：0.001-1.000％，P≤0.10％和S≤0.010％质量的钢板，其余部分包括 铁和不可避免的杂质。 在连续式热浸镀锌设备中对钢板进行退火和热浸镀锌处理时，退火炉中钢板的最高达到温度为600℃以上至750℃以下，钢板 在600℃以上至750℃以下的温度区域的通过时间在30秒以上至10分钟以上，大气中的露点为-10℃以上。

    High-strength hot-dip galvanized steel sheet and method of manufacturing the same
    99.
    发明专利
    High-strength hot-dip galvanized steel sheet and method of manufacturing the same 有权
    高强度热镀锌钢板及其制造方法

    公开(公告)号：JP2013181225A

    公开(公告)日：2013-09-12

    申请号：JP2012046472

    申请日：2012-03-02

    申请人： Jfe Steel Corp ,  Jfeスチール株式会社

    发明人： HARAKO DAISUKE ,  SUZUKI YOSHITSUGU ,  NAGATAKI YASUNOBU

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

    CPC分类号： C21D8/005 ,  B32B15/01 ,  B32B15/013 ,  C21D8/0205 ,  C21D8/0263 ,  C21D8/0278 ,  C21D9/46 ,  C21D9/561 ,  C21D2241/00 ,  C22C18/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C28/321 ,  C23C28/345 ,  C23F17/00 ,  Y10T428/12799

    摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-dip galvanized steel sheet which is superior in workability, plating adhesion in a bending part, corrosion resistance in a stretch flange processed part, and surface appearance.SOLUTION: A high-strength hot-dip galvanized steel sheet contains, by mass, ≥0.02% and ≤0.30% of C, ≥0.01% and ≤2.5% of Si, ≥0.1% and ≤3.0% of Mn, ≥0.003% and ≤0.08% of P, ≤0.01% of S, ≥0.001% and ≤0.20% of Al, and ≥0.03% and ≤0.40% of Ti, as well as Fe and inevitable impurities as a remainder, and its surface has a zinc plating layer with a plating adhesion amount of 20-120 g/mper one surface. The concentration ratio (C/Ti) of C to Ti at a region within 10 μm depth from the surface of the steel sheet immediately beneath the plating layer is ≥0.8 and ≤1.5 by atomic ratio, and an amount of one or more of oxides selected from Fe, Si, Mn, P, Al and Ti generated in the surficial region of the steel that is within 100 μm depth from the surface of the steel sheet immediately beneath the plating layer is 0.05 g/mor less per one surface in total as oxygen content.

    摘要翻译： 要解决的问题：提供一种加工性优异的弯曲部中的电镀附着力，拉伸凸缘加工部的耐腐蚀性以及表面外观优异的高强度热镀锌钢板。解决方案：高强度热 二次镀锌钢板按质量计含有：≥0.02％和≤0.30％的C，≥0.01％和≤2.5％的Si，≥0.1％和≤3.0％的Mn，≥0.003％和≤0.08％的P， ≤0.01％的S，≥0.001％和≤0.20％的Al，以及≥0.03％和≤0.40％的Ti，以及Fe和不可避免的杂质作为余量，其表面具有镀锌层 数量为20-120克/平方米。 在紧邻镀层的钢板表面10μm以下的区域，C与Ti的浓度比（C / Ti）为原子比为≥0.8，≤1.5，氧化物 选自在距离电镀层正下方的钢板表面100μm以下的钢的表面区域产生的Fe，Si，Mn，P，Al和Ti，总共为0.05g / mor 作为氧含量。