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1. 发明专利

JP2014040652A High-strength steel plate and manufacturing method thereof 有权
标题翻译：高强度钢板及其制造方法
公开(公告)号：JP2014040652A
公开(公告)日：2014-03-06
申请号：JP2013041720
申请日：2013-03-04
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： C21D9/46 , C22C38/00 , C22C38/06 , C22C38/60 , C23C8/14 , C23C22/78 , C23F17/00 , C25D13/22 , C25F1/06
CPC分类号： C21D9/52 , C21D1/76 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D9/46 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C25F1/06
摘要： PROBLEM TO BE SOLVED: To provide a high-strength steel plate excellent in chemical conversion, and corrosion resistance after electrodeposition coating even when having a large content of Si or Mn, and a manufacturing method thereof.SOLUTION: When a steel plate containing C of 0.03-0.35%, Si of 0.01-0.50%, Mn of 3.6-8.0%, Al of 0.01-1.0%, P≤0.10%, S≤0.010% by mass% and the remainder consisting of Fe and inevitable impurities is continuously annealed, the maximum arrival temperature of the steel plate in an annealing furnace is 600°C or more and 750°C or less, a steel plate passing time at the steel plate temperature of 600°C or more and 750°C or less is 30 seconds or more and 10 minutes or less, and a dew point in the atmosphere is -10°C or less.
摘要翻译：要解决的问题：提供即使具有大量Si或Mn的电沉积涂覆后的化学转化率和耐腐蚀性的高强度钢板及其制造方法。解决方案：当含有C 0.03〜0.35％，Si：0.01-0.50％，Mn：3.6〜8.0％，Al：0.01〜1.0％，P≤0.10％，S≤0.010质量％，余量由Fe和不可避免的杂质组成钢板在退火炉中的最高到达温度为600℃以上且750℃以下，钢板温度为600℃以上且750℃以下的钢板通过时间为30 秒以上且10分钟以下，大气中的露点为-10℃以下。

2. 发明专利

JP2011168861A High-strength hot rolled steel sheet and method of manufacturing the same 有权
标题翻译：高强度热轧钢板及其制造方法
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

3. 发明专利

JP2014095143A Method of producing high-strength galvanized steel sheet and high-strength galvanized steel sheet 有权
标题翻译：生产高强度钢化钢板和高强度钢化钢板的方法
公开(公告)号：JP2014095143A
公开(公告)日：2014-05-22
申请号：JP2013042455
申请日：2013-03-05
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： C23C2/02 , C21D9/46 , C22C18/00 , C22C38/00 , C22C38/06 , C22C38/60 , C23C2/06 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a method of producing a high-strength galvanized steel sheet having an excellent plating appearance and excellent corrosion resistance, plating peeling resistance in high processing and processability by using a high-strength steel sheet containing Si and Mn as base material sheet and a high-strength galvanized steel sheet.SOLUTION: The concentration of hydrogen in an atmosphere is controlled in such a relatively low temperature range that surface enrichment occurs while internal oxidation does not occur sufficiently, and the dew point in the atmosphere is controlled in a limited temperature range. More specifically, the concentration of hydrogen in an atmosphere in the temperature range of a heating furnace of 500°C to A°C (A:520≤A≤600) is controlled so as to be 15 vol.% or higher, and the dew point in the atmosphere in the temperature range of higher than A°C and equal to or lower than B°C (B:550≤B≤700) is controlled so as to be -10°C or higher.
摘要翻译：要解决的问题：提供一种通过使用含有Si和Mn作为基底的高强度钢板，制造具有优异的电镀外观和优异的耐腐蚀性，高加工性和耐加工性的耐电镀剥离性的高强度镀锌钢板的方法材料片和高强度镀锌钢板。解决方案：气氛中的氢浓度在如此相对较低的温度范围内控制，表面富集发生，而内部氧化不充分发生，并且大气中的露点受到控制在有限的温度范围内。更具体地说，在加热炉的温度范围为500℃〜A℃（A：520≤A≤600）的气氛中的氢浓度为15体积％以上，在高于A℃且等于或低于B℃（B：550≤B≤700）的温度范围内的大气中的露点被控制为-10℃以上。

4. 发明专利

JP2011168878A High-strength hot-dip galvanized steel sheet with excellent fatigue property and hole expansibility and method for producing the same 有权
标题翻译：具有优异的疲劳性能和孔膨胀性的高强度热镀锌钢化片及其制造方法
公开(公告)号：JP2011168878A
公开(公告)日：2011-09-01
申请号：JP2010262088
申请日：2010-11-25
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： KAWASAKI YOSHIYASU , NAKAGAITO TATSUYA , KANEKO SHINJIRO , NAGATAKI YASUNOBU
IPC分类号： C22C38/00 , C21D9/46 , C22C38/06 , C22C38/60 , C23C2/06 , C23C2/40
CPC分类号： C23C2/06 , B32B15/013 , C21D8/0205 , C21D9/46 , C21D2201/03 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-dip galvanized steel sheet which has a tensile strength TS of 590 MPa or higher and has excellent fatigue properties and hole expansibility, and a method for producing the steel sheet. SOLUTION: The galvanized steel sheet contains, in terms of mass%, 0.04% to 0.13% of C, 0.9% to 2.3% of Si, 0.8% to 1.8% of Mn, up to 0.1% of P, up to 0.01% of S, up to 0.1% of Al, and up to 0.008% of N, with the balance iron and inevitablel impurities, and has a structure which comprises, in terms of areal proportion, at least 80% of a ferrite phase, at least 1.0% of a bainitic ferrite phase, 1.0% to 10.0% of a pearlite phase, and 1.0% or more and less than 5.0% of a martensite phase, wherein an average crystal grain diameter is 14 μm or less in the ferrite phase and 4 μm or less in the martensite phase, the martensite has a mean free path of 3 μm or more, the ferrite shows Vickers hardness of 140 or above, and the areal proportions satisfy (areal proportion of martensite)/((areal proportion of bainitic ferrite)+(areal proportion of pearlite))≤0.6. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种拉伸强度TS为590MPa以上并且具有优异的疲劳性能和孔膨胀性的高强度热浸镀锌钢板及其制造方法。解决方案：镀锌钢板以质量％计含有0.04％至0.13％的C，0.9％至2.3％的Si，0.8％至1.8％的Mn，高达0.1％的P，直至 0.01％的S，至多0.1％的Al和至多0.008％的N，余量为铁和不可避免的杂质，并且具有包括根据面积比例至少80％的铁素体相的结构，贝氏体铁素体相的至少1.0％，珠光体相的1.0〜10.0％，马氏体相的1.0％以上且小于5.0％，铁素体相的平均结晶粒径为14μm以下在马氏体相中为4μm以下，马氏体的平均自由程为3μm以上，铁素体的维氏硬度为140以上，面积比例满足（马氏体的面积比）/（（面积比）贝氏体铁素体）+（珠光体的面积比例））≤0.6。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2010255094A High-strength cold-rolled steel sheet having excellent workability, hot-dip galvanized high-strength steel sheet, and method for producing them 有权
标题翻译：具有优异工作性能的高强度冷轧钢板，热镀锌高强度钢板及其生产方法
公开(公告)号：JP2010255094A
公开(公告)日：2010-11-11
申请号：JP2009262503
申请日：2009-11-18
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： KANEKO SHINJIRO , KAWASAKI YOSHIYASU , NAKAGAITO TATSUYA , MATSUOKA SAIJI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/38 , C22C38/58 , C23C2/06
CPC分类号： C23C2/06 , C21D1/25 , C21D1/26 , C21D8/0463 , C21D8/0473 , C21D9/48 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/38 , C23C2/02 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a high-strength cold-rolled steel sheet having a TS of ≥1,180 MPa and excellent workability, such as hole expansibility and bendability, to provide a hot-dip galvanized high-strength steel sheet, and to provide a method for producing them.
SOLUTION: The high-strength cold-rolled steel sheet having excellent workability has a composition that comprises, by mass%, C: 0.05 to 0.3, Si: 0.5 to 2.5, Mn: 1.5 to 3.5, P: 0.001 to 0.05, S: 0.0001 to 0.01, Al: 0.001 to 0.1, N: 0.0005 to 0.01, Cr: 1.5 or less (including 0) with the balance being Fe and satisfies formula (1): [C]
1/2 ×([Mn]+0.6×[Cr])≥1-0.12×[Si], and formula (2): 550-350×C*-40×[Mn]-20×[Cr]+30×[Al]≥340, provided that C*=[C]/(1.3×[C]+0.4×[Mn]+0.45×[Cr]-0.75). The steel sheet has a microstructure wherein the area ratio occupied by a martensite phase is 30% or greater, and the average particle size of the martensite phase is ≥2 μm.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题为了提供一种TS为≥1,180MPa的高强度冷轧钢板，并且具有优异的可加工性和可弯曲性的可加工性，以提供热镀锌高强度钢板，并提供一种生产它们的方法。解决方案：具有优异的加工性的高强度冷轧钢板具有以质量％计含有C：0.05〜0.3，Si：0.5〜2.5，Mn：1.5〜3.5，P：0.001〜0.05的组成，S：0.0001〜0.01，Al：0.001〜0.1，N：0.0005〜0.01，Cr：1.5以下（包括0）余量为Fe，满足式（1）：[C] （2）550-350×C * -40×[Mn] -20×[Cr] +30 ×[Al]≥340，条件是C * = [C] /（1.3×[C] + 0.4×[Mn] + 0.45×[Cr] -0.75）。钢板具有马氏体相所占的面积比为30％以上的组织，马氏体相的平均粒径为2μm以下。版权所有（C）2011，JPO＆INPIT

6. 发明专利

JP2010126770A High-strength hot-dip galvanized steel sheet superior in formability, and method for manufacturing the same 有权
标题翻译：高强度热镀锌钢板超级钢板及其制造方法
公开(公告)号：JP2010126770A
公开(公告)日：2010-06-10
申请号：JP2008303290
申请日：2008-11-28
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： KANEKO SHINJIRO , KAWASAKI YOSHIYASU , NAKAGAITO TATSUYA , MATSUOKA SAIJI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-dip galvanized steel sheet which has a TS of 1,180 MPa or higher and is superior in formability such as hole-expandability and bendability, and to provide a method for manufacturing the same.
SOLUTION: The high-strength hot-dip galvanized steel sheet superior in formability has a component composition which includes, by mass%, 0.05-0.3% C, 0.5-2.5% Si, 1.5-3.5% Mn, 0.001-0.05% P, 0.0001-0.01% S, 0.001-0.1% Al, 0.0005-0.01% N and the balance Fe with unavoidable impurities, and satisfies the following expression (1), and has a microstructure in which a tempered martensite phase occupies 80% or more but less than 95% and a retained austenite phase occupies 5% or more but less than 20% by an area rate, and the tempered martensite phase has a mean crystal grain size of 20 μm or smaller. (1) 3.3×[C]+0.1×[Si]+1.0×[Mn]≥3.25, wherein [M] in the expression represents the content (mass%) of an element M.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供TS为1180MPa以上的高强度热浸镀锌钢板，成型性优异，例如扩孔性和弯曲性，并提供制造方法相同。解决方案：成形性优异的高强度热浸镀锌钢板具有以质量％计含有0.05-0.3％的C，0.5-2.5％的Si，1.5-3.5％的Mn，0.001-0.05的组分组成％P，0.0001-0.01％S，0.001-0.1％Al，0.0005-0.01％N，余量为不可避免杂质的Fe，满足下列表达式（1），并且具有回火马氏体相占80％以上，小于95％，残留奥氏体相占面积率为5％以上且小于20％，回火马氏体相的平均结晶粒径为20μm以下。（1）3.3×[C] + 0.1×[Si] + 1.0×[Mn]≥3.25，式中的[M]表示元素M的含量（质量％）。 2010年，JPO＆INPIT

7. 发明专利

JP2017115189A 表面外観および曲げ性に優れるＭｎ含有合金化溶融亜鉛めっき鋼板およびその製造方法有权
公开(公告)号：JP2017115189A
公开(公告)日：2017-06-29
申请号：JP2015250124
申请日：2015-12-22
申请人： Jfeスチール株式会社 , Jfe Steel Corp
发明人： MAEDA SATOSHI , MAKISUI YOICHI , SUZUKI YOSHITSUGU , YAMADA KATSUMI , KAWASAKI YOSHIYASU
IPC分类号： C23C2/06 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/60 , C23C2/28 , C23C2/40
CPC分类号： C21D9/46 , C22C38/00 , C22C38/06 , C22C38/60 , C23C2/06 , C23C2/28 , C23C2/40
摘要：【課題】めっき外観および曲げ性に優れる高強度合金化溶融亜鉛めっき鋼板およびその製造方法を提供する。【解決手段】亜鉛めっき層中には、ア)FeおよびMnを含む酸化物、イ)FeおよびMnを含む酸化物とFe酸化物、ウ)FeおよびMnを含む酸化物とMn酸化物、エ)FeおよびMnを含む酸化物とFe酸化物とMn酸化物、オ)Fe酸化物とMn酸化物のいずれかが存在し、酸化物の合計がO量で0.01〜0.100g/m2であり、酸化物を構成するMnとFeの質量%の比であるMn/Feが0.10〜10.00であり、亜鉛めっき層の表面から亜鉛めっき層全厚みの50%以内の範囲に、Fe、Mnから選ばれる少なくとも1種の酸化物が断面積分率で60%以上存在し、亜鉛めっき層直下の下地鋼板表面から5μm以内の鋼板表層部に、Fe、Mnから選ばれる少なくとも1種の酸化物がO量で0.040g/m2以下(0を含まない)存在する。【選択図】なし

8. 发明专利

JP2014040655A High-strength steel plate and manufacturing method thereof 有权
标题翻译：高强度钢板及其制造方法
公开(公告)号：JP2014040655A
公开(公告)日：2014-03-06
申请号：JP2013041796
申请日：2013-03-04
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： C21D9/46 , C22C38/00 , C22C38/06 , C22C38/60 , C25F1/06
摘要： PROBLEM TO BE SOLVED: To provide a high-strength steel plate excellent in chemical conversion, and corrosion resistance after electrodeposition coating even when having a large content of Si or Mn, and a manufacturing method thereof.SOLUTION: When a steel plate containing C of 0.03-0.35%, Si of 0.01-0.50%, Mn of 3.6-8.0%, Al of 0.01-1.0%, P≤0.10%, S≤0.010% by mass% and the remainder consisting of Fe and inevitable impurities is continuously annealed, the steel plate maximum arrival temperature in an annealing furnace is 600°C or more and 700°C or less, a steel plate passing time at a steel plate temperature of 600°C or more and 700°C or less is 30 seconds or more and 10 minutes or less, and a hydrogen concentration in the atmosphere is 20 vol% or more.
摘要翻译：要解决的问题：提供即使具有大量Si或Mn的电沉积涂覆后的化学转化率和耐腐蚀性的高强度钢板及其制造方法。解决方案：当含有C 0.03〜0.35％，Si：0.01-0.50％，Mn：3.6〜8.0％，Al：0.01〜1.0％，P≤0.10％，S≤0.010质量％，余量由Fe和不可避免的杂质组成退火炉中的钢板最高到达温度为600℃以上且700℃以下，钢板温度为600℃以上且700℃以下的钢板通过时间为30秒，大于等于10分钟，气氛中的氢浓度为20体积％以上。

9. 发明专利

JP2014037571A METHOD FOR MANUFACTURING GALVANNEALED STEEL SHEET HAVING TENSILE STRENGTH OF 980 MPa OR MORE 有权
标题翻译：制造具有980 MPa或更高的拉伸强度的钢化钢板的方法
公开(公告)号：JP2014037571A
公开(公告)日：2014-02-27
申请号：JP2012179856
申请日：2012-08-14
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： SUZUKI KATSUICHI , KAWASAKI YOSHIYASU
IPC分类号： C23C2/28 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/14 , C23C2/06
摘要： PROBLEM TO BE SOLVED: To provide a method for stably manufacturing a high strength galvannealed steel sheet having a specified alloying degree under normal conditions regarding heating for alloying and line speed.SOLUTION: The method comprises: annealing a steel sheet containing C: 0.05 mass% to 0.25 mass%, Si: 1.0 mass% to 3.0 mass%, Mn: 1.5 mass% to 3.5 mass%, P: 0.1 mass% or less, S: 0.01 mass% or less, Al: 0.1 mass% or less and the balance consisting of Fe and inevitable impurities, in which [C equivalent] expressed by equation (b) below is 1.8 or more; galvanizing the annealed steel sheet; and performing an alloying treatment on the galvanized steel sheet, in which the galvannealed steel sheet has an austenite phase γ of 30 vol.% to 70 vol.% where γ is expressed by the equation γ=[-0.15Y+0.2(T-800)+225[C equivalent]-374]/1.93.
摘要翻译：要解决的问题：提供一种用于在正常条件下稳定地制造具有规定的合金化程度的合金化合金化钢板的方法，该方法包括：对于合金化和线速度加热进行加热。方法包括：对含有C：0.05质量％至0.25质量％，Si：1.0质量％〜3.0质量％，Mn：1.5质量％〜3.5质量％，P：0.1质量％以下，S：0.01质量％以下，Al：0.1质量％以下，余量由Fe和不可避免的杂质组成，其中由下式（b）表示的[C当量]为1.8以上; 镀锌退火钢板; 对镀锌钢板进行合金化处理，其中合金化热浸镀锌钢板的奥氏体相γ为30体积％〜70体积％，其中γ由下式表示：γ= [ - 0.15Y + 0.2（T- 800）+225 [C当量] -374] /1.93。

10. 发明专利

JP2013241636A Low yield ratio type high strength hot dip galvanized steel sheet, low yield ratio type high strength alloying hot dip galvannealed steel sheet, method for manufacturing low yield ratio type high strength hot dip galvanized steel sheet, and method for manufacturing low yield ratio type high strength alloying hot dip galvannealed steel sheet 审中-公开
标题翻译：低合金类型高强度热镀锌钢板，低合金型高强度合金热镀锌钢板，制造低合金型高强度热镀锌钢板的方法，以及制造低成品率高强度的方法合金热镀锌钢板
公开(公告)号：JP2013241636A
公开(公告)日：2013-12-05
申请号：JP2012114521
申请日：2012-05-18
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： HASEGAWA HIROSHI , KAWASAKI YOSHIYASU , KANEKO SHINJIRO , NAGATAKI YASUNOBU
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 low yield ratio type high strength hot dip galvanized steel sheet or the like having a low yield ratio and high strength and being excellent in workability and plating property.SOLUTION: A low yield ratio type high strength hot dip galvanized steel sheet has a composition including, by mass, 0.03-0.20% of C, ≤1.0% of Si, >1.5% and ≤3.0% of Mn, ≤0.10% of P, ≤0.05% of S, ≤0.10% of Al, ≤0.010% of N, ≤0.5% of Cr, and 0.01-0.50% of Mo, and the balance Fe with inevitable impurities, as a component composition, and has a structure including ferrite and a second phase. Ferrite has an area ratio of ≥50%, and the second phase includes martensite having an area ratio of ≥7% and
摘要翻译：要解决的问题：提供低屈服比和高强度的低屈服比型高强度热浸镀锌钢板等，并且具有优异的加工性和电镀性能。解决方案：低屈服比型高强度热浸镀锌钢板的组成为：C：0.03〜0.20％，Si：≤1.0％，Mn：1.5％以下且≤3.0％，P：0.10％以下，S：0.05％以下，≤0.10％ Al，≤0.010％的N，≤0.5％的Cr和0.01-0.50％的Mo，余量为Fe和不可避免的杂质作为组分组成，并且具有包括铁素体和第二相的结构。铁氧体的面积率≥50％，第二相包括面积比≥7％和<25％的马氏体，由第二相形成的带状结构的厚度满足预定的关系式。

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