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    • 4. 发明专利
    • Highly oxidation-resistant ferrite stainless steel plate
    • 高耐氧铁锈不锈钢板
    • JP2012117084A
    • 2012-06-21
    • JP2010265015
    • 2010-11-29
    • Nippon Steel & Sumikin Stainless Steel Corp新日鐵住金ステンレス株式会社
    • JINNO NORIHIROINOUE YOSHIHARUHAMADA JUNICHI
    • C22C38/00C22C38/26C22C38/54
    • PROBLEM TO BE SOLVED: To provide a ferrite stainless steel sheet having high oxidation resistance and excellent resistance to scale peeling even at high temperature around 1,000°C.SOLUTION: The ferrite stainless steel sheet having excellent oxidation resistance, contains ≤0.020% C, ≤0.020% N, >0.10 to 0.35% Si, 0.10-0.60% Mn, 16.5-20.0% Cr, 0.30-0.80% Nb, >2.50 to 3.50% Mo, 1.00-2.50% Cu, and exhibits an oxidation mass increase of ≤4.0 mg/cmafter an atmospheric continuous oxidation test of 200 hours at 1,000°C, and exhibits a scale-peeling amount of ≤1.0 mg/cm. To the steel sheet, one or more kinds of ≤2.0% W, ≤0.20% Ti, ≤0.0030% B, ≤0.0100% Mg, ≤1.0% Al, ≤1.0% Ni, ≤1.00% Sn, ≤0.50% V, ≤1.0% Zr, ≤1.0% Hf and ≤3.0% Ta, can be added.
    • 要解决的问题:提供即使在约1000℃的高温下也具有高抗氧化性和优异的耐鳞剥离性的铁素体不锈钢板。

      解决方案:耐氧化性优异的铁素体不锈钢板含有≤0.020%C,≤0.020%N,> 0.10〜0.35%Si,0.10〜0.60%Mn,16.5〜20.0%Cr,0.30〜0.80%Nb ,> 2.50〜3.50%的Mo,1.00-2.50%的Cu,并且在200小时的大气连续氧化试验之后,在1000℃下表现出≤4.0mg/ cm 2的氧化质量增加 2 ℃,表现出≤1.0mg/ cm 2的刻度剥离量 2 。 对于钢板,一种或多种≤2.0%W,≤0.20%Ti,≤0.0030%B,≤0.0100%Mg,≤1.0%Al,≤1.0%Ni,≤1.00%Sn,≤0.50%V, ≤1.0%Zr,≤1.0%Hf和≤3.0%Ta。 版权所有(C)2012,JPO&INPIT

    • 5. 发明专利
    • Method for manufacturing heat resistant ferritic stainless steel sheet having excellent workability
    • 制造具有良好工作性能的耐热不锈钢不锈钢板材的方法
    • JP2005325377A
    • 2005-11-24
    • JP2004142476
    • 2004-05-12
    • Nippon Steel & Sumikin Stainless Steel Corp新日鐵住金ステンレス株式会社
    • INOUE YOSHIHARUKIKUCHI MASAO
    • B21B3/02C21D9/46C22C38/00C22C38/28
    • PROBLEM TO BE SOLVED: To provide a method for producing a heat resistant ferritic stainless steel sheet having excellent workability.
      SOLUTION: At the time when a slab having a composition comprising, by mass, ≤0,030% C, 0.02 to 1.0% Si, 0.05 to 1.0% Mn, ≤0.04% P, ≤0.020% S, ≤0.030% N, 10 to 20% Cr, Ti: 3×(C+N) to 0.25%, 0.2 to 1.0% Nb and C+N≤0.030%, and, if required, comprising 0.2 to 2.5% Mo, and the balance Fe with inevitable impurities is subjected to hot rolling, hot rolled sheet annealing and pickling by conventional methods, and is further repeatedly subjected to cold rolling, annealing and pickling for one or more times to produce a ferritic stainless steel, heating temperature and rough rolling ratio in the hot rolling are controlled in such a manner that the recrystallization ratio of a rough bar before finish rolling in the hot rolling reaches ≥30%. It is preferable that the heating temperature in the hot rolling is controlled to 1,200 to 1,300°C, the rough rolling ratio is controlled to ≥80%, the hot rolling ratio is controlled to ≥95%, and in the meantime from the extraction from a heating furnace to the start of the finish rolling, the time for which the temperature of the steel is ≥1,000°C is controlled to 5 to 20 min as well.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种具有优异的可加工性的耐热铁素体不锈钢板的制造方法。 < P>解决方案:当具有质量≤0.030%C,0.02〜1.0%Si,0.05〜1.0%Mn,≤0.04%P,≤0.020%S,≤0.030%N ,10〜20%的Cr,Ti:3×(C + N)〜0.25%,Nb:0.2〜1.0%,C +N≤0.030%,如果需要,含有0.2〜2.5%的Mo,余量为Fe 不可避免的杂质通过常规方法进行热轧,热轧板退火和酸洗,并进一步反复进行一次或多次冷轧,退火和酸洗,以生产铁素体不锈钢,加热温度和粗轧比 热轧的控制是使热轧后的精轧前的粗钢的再结晶率达到30%以上。 热轧中的加热温度优选为1200〜1300℃,粗轧比控制在≥80%以下,热轧比控制在≥95%以上,同时从 在开始精轧的加热炉中,将钢的温度≥1000℃的时间也控制在5〜20分钟。 版权所有(C)2006,JPO&NCIPI
    • 6. 发明专利
    • Ferrite-based stainless steel plate excellent in heat resistance
    • 基于铁素体的不锈钢板耐热性优良
    • JP2012193435A
    • 2012-10-11
    • JP2011059640
    • 2011-03-17
    • Nippon Steel & Sumikin Stainless Steel Corp新日鐵住金ステンレス株式会社
    • JINNO NORIHIROINOUE YOSHIHARUHAMADA JUNICHI
    • C22C38/00C21D9/46C22C38/26C22C38/54
    • PROBLEM TO BE SOLVED: To provide a ferrite-based stainless steel plate having high heat resistance even at a high temperature of 850°C or higher.SOLUTION: The ferrite-based stainless steel plate excellent in the heat resistance has, by mass, 0.02% or lower of C, 0.02% or lower of N, 0.30% or lower of Si, 0.10 to 1.00% of Mn, 16.5 to 20.0% of Cr, >0.50 and ≤0.80% of Nb, 2.00 to 3.50% of Mo, 0.05 to 1.50% of W, 1.00 to 2.00% of Cu and 0.001 to 0.01% of O, and satisfies an expression of 2.3≤Mo+W≤3.5%. There may be added 0.0015% or lower of B, 0.0050% or lower of Mg, 1.0% or lower of Ni, 1.0% or lower of Al, 0.50% or lower of V, 0.50% or lower of Sn, 0.5% or lower of Hf, 0.5% or lower of Zr and 1.0% or lower of Ta. In the ferrite-based stainless steel plate, 10 or more oxides per 25 μmexist which have particle diameters not smaller than 0.2 μm with Nb in steel as main phases, and among the oxides, 5 or more oxides per 25 μmexist whose particle diameters exceed 1 μm.
    • 要解决的问题:即使在850℃或更高的高温下,也提供具有高耐热性的铁素体系不锈钢板。 < P>解决方案:耐热性优异的铁素体系不锈钢板的C:0.02%以下,N:0.02%以下,Si:0.30%以下,Mn:0.10〜1.00% 16.5〜20.0%的Cr,0.50〜0.80%的Nb,2.00〜3.50%的Mo,0.05〜1.50%的W,1.00〜2.00%的Cu和0.001〜0.01%的O,满足表达式2.3 ≤Mo+W≤3.5%。 可以添加0.0015%以下的B,0.0050%以下的Mg,1.0%以下的Ni,1.0%以下的Al,0.50%以下的V,0.50%以下的Sn,0.5%以下 的Hf,0.5%以下的Zr和1.0%以下的Ta。 在铁素体系不锈钢板中,存在以25%以上的氧化物 2 ,其中以钢中的Nb为主相,粒径不小于0.2μm, 存在粒径超过1μm的氧化物,每25微米5个或更多个氧化物 2 。 版权所有(C)2013,JPO&INPIT
    • 7. 发明专利
    • Martensitic stainless steel for heat resistant disk brake
    • 用于耐热盘式制动器的马氏体不锈钢
    • JP2011190503A
    • 2011-09-29
    • JP2010057864
    • 2010-03-15
    • Nippon Steel & Sumikin Stainless Steel Corp新日鐵住金ステンレス株式会社
    • INOUE YOSHIHARUTERAOKA SHINICHI
    • C22C38/00C22C38/58
    • PROBLEM TO BE SOLVED: To provide a martensitic stainless steel for a heat resistant disk brake which has excellent hardenability and heat resistance despite relatively reduced alloy content and low cost.
      SOLUTION: The martensitic stainless steel sheet for a heat resistant disk brake has a composition comprising, by mass, 0.02 to 0.08% C, 0.1 to 1% Si, 0.5 to 2.5% Mn, ≤0.04% P, ≤0.010% S, 0.025 to 0.05% N, 11 to 14% Cr, ≤0.10% Ni, 0.2 to 0.3% V, Nb: 0.005 to (93/51)[%V], ≤0.05% Ti and ≤0.01% Al, and in which, regarding C and N, C+N: 0.05 to 0.1% is satisfied, and the balance Fe with inevitable impurities, and a value calculated by γp formula satisfies ≥85.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种用于耐热盘式制动器的马氏体不锈钢,尽管相对减少的合金含量和低成本,但其具有优异的淬透性和耐热性。 解决方案:用于耐热盘式制动器的马氏体不锈钢板的组成包括质量为0.02至0.08%的C,0.1至1%的Si,0.5至2.5%的Mn,≤0.04%的P,≤0.010% S,0.025〜0.05%N,11〜14%Cr,≤0.10%Ni,0.2〜0.3%V,Nb:0.005〜(93/51)[%V],≤0.05%Ti和≤0.01%Al, 其中,关于C和N,C + N:满足0.05〜0.1%,余量为Fe和不可避免的杂质,由γp式计算的值满足≥85。 版权所有(C)2011,JPO&INPIT
    • 8. 发明专利
    • Heat resistant ferritic stainless steel sheet having excellent oxidation resistance
    • 具有优异耐氧化性的耐热不锈钢不锈钢板
    • JP2009235555A
    • 2009-10-15
    • JP2008087031
    • 2008-03-28
    • Nippon Steel & Sumikin Stainless Steel Corp新日鐵住金ステンレス株式会社
    • INOUE YOSHIHARUHAMADA JUNICHIKAJIMURA HARUHIKO
    • C22C38/00C21D9/46C22C38/50C22C38/54
    • Y02P10/212
    • PROBLEM TO BE SOLVED: To provide a heat resistant ferritic stainless steel sheet having excellent oxidation resistance. SOLUTION: The heat resistant ferritic stainless steel sheet having excellent oxidation resistance includes a composition comprising, by mass%, ≤0.008% C, ≤0.02% N, 0.1 to 0.5% Si, 0.5 to 1.5% Mn, 14 to 19% Cr, 0.8 to 2% Cu, ≤0.2% Ni, 0.2 to 0.8% Nb and 0.01 to 0.3% Ti, and the respective elements are regulated each other so that formula (1) is ≤0, and the residue comprises Fe and inevitable impurities. The steel sheet may comprise 0.02 to 0.5% V, 1 to 2% Mo, 0.0002 to 0.0050% B, ≤3% Al, ≤3% W and ≤1% Sn: γp=420×[%C*]+470×[%N*]+23×[%Ni]+9×[%Cu]+7×[%Mn]-11.5×[%Cr]-11.5×[%Si]-52×[%Al]-12×[%Mo]-47×[%Nb*]-23×[%V]+189 (1). COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供耐氧化性优异的耐热铁素体不锈钢板。 解决方案:具有优异抗氧化性的耐热铁素体不锈钢板包括以质量百分数计≤0.008%C,≤0.02%N,0.1〜0.5%Si,0.5〜1.5%Mn,14〜19质量% %Cr,0.8〜2%Cu,≤0.2%Ni,0.2〜0.8%Nb和0.01〜0.3%Ti,各元素彼此调节,使式(1)≤0,残渣包含Fe和 不可避免的杂质。 钢板可以包含0.02〜0.5%V,1〜2%Mo,0.0002〜0.0050%B,≤3%Al,≤3%W,≤1%Sn:γp= 420×[%C *] + 470× [%N *] + 23×[%Ni] + 9×[%Cu] + 7×[%Mn] -11.5×[%Cr] -11.5×[%Si] -52×[%Al] -12× [%Mo] -47×[%Nb *] - 23×[%V] +189(1)。 版权所有(C)2010,JPO&INPIT