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    • 91. 发明专利
    • Rolling bearing for wind power generation facility
    • 风力发电设备的滚动轴承
    • JP2013096448A
    • 2013-05-20
    • JP2011237476
    • 2011-10-28
    • Nsk Ltd日本精工株式会社
    • YAMAGUCHI AKIRATAKANO SUSUMU
    • F16C33/62C21D1/06C21D9/40C22C38/00C22C38/44F16C19/26F16C33/44F16C33/64
    • PROBLEM TO BE SOLVED: To further lengthen the rolling fatigue service life of a rolling bearing for a wind power generation facility used under a condition of easily causing structural change type separation.SOLUTION: A quantity of alloy component (C, Si, Mn, Cr and Mo) of a material of the rolling bearing is optimized, a structural change by hydrogen is delayed by controlling a C+N quantity, hardness, a residual austenite quantity and compressive residual stress of a position of easily causing the structural change, entry of the hydrogen into steel is restrained by applying blackening processing (an oxide film), sliding is restrained by managing an effective gap small in a predetermined range, the number of rollers is increased (changed into high load capacity) in a predetermined range, and predetermined crowning is applied to a rolling surface of the roller to restrain contact bearing pressure, so that respective processes of a mechanism of causing the structural change type separation are restrained.
    • 要解决的问题:为了进一步延长在容易引起结构变化型分离的条件下使用的风力发电设备的滚动轴承的滚动疲劳寿命。 解决方案:优化了一定数量的滚动轴承材料的合金成分(C,Si,Mn,Cr和Mo),氢的结构变化通过控制C + N量,硬度,残余 通过施加黑化处理(氧化膜)来抑制容易引起结构变化的位置的奥氏体量和压缩残余应力,通过施加黑化处理(氧化物膜)来抑制氢进入钢中,通过管理预定范围内的有效间隙来限制滑动, 的辊子在预定范围内增加(变为高负载能力),并且对辊的滚动表面施加预定的凸面以抑制接触承受压力,从而限制了引起结构变化型分离的机构的各个过程 。 版权所有(C)2013,JPO&INPIT
    • 95. 发明专利
    • Steel material for bearing having excellent rolling fatigue life
    • 用于具有优异滚动疲劳寿命的轴承的钢材
    • JP2013001930A
    • 2013-01-07
    • JP2011132681
    • 2011-06-14
    • Kobe Steel Ltd株式会社神戸製鋼所
    • TSUCHIDA TAKEHIROSOMEKAWA MASAMI
    • C22C38/00C21D8/00C22C38/18C22C38/44
    • PROBLEM TO BE SOLVED: To provide a steel material for bearing, which is used for obtaining a bearing having further improved rolling fatigue life.SOLUTION: The steel material for bearing includes 0.95-1.10% of C, 0.15-0.90% of Si, ≤1.2% (excluding 0%) of Mn, 0.90-1.60% of Cr, ≤0.025% (excluding 0%) of P and ≤0.025% (excluding 0%) of S, with the balance comprising iron and inevitable impurities. In the surface parallel to the rolling direction of the steel material, when an EPMA line analysis is carried out in the direction vertical to the rolling direction, the standard deviation and the average value of X-ray intensity values of Cr satisfy the relation of formula (1): (standard deviation of X-ray intensity values of Cr/average value of X-ray intensity values of Cr)≤0.25.
    • 解决的问题:提供一种用于获得具有进一步提高的滚动疲劳寿命的轴承的轴承用钢材。

      解决方案:用于轴承的钢材包括C:0.95-1.10%,Si:0.15-0.90%,Mn:Mn:1.20%(不包括0%):0.90-1.60%,≤0.025%(不包括0% ),P为≤0.025%(不含0%),余量为铁和不可避免的杂质。 在与钢材的轧制方向平行的表面上,当沿与轧制方向垂直的方向进行EPMA线分析时,Cr的X射线强度值的平均值满足公式 (1):( Cr的X射线强度值的标准偏差/ Cr的X射线强度值的平均值)≤0.25。 版权所有(C)2013,JPO&INPIT

    • 100. 发明专利
    • Stainless-clad steel excellent in corrosion resistance
    • 不锈钢耐腐蚀性优良
    • JP2012149308A
    • 2012-08-09
    • JP2011009413
    • 2011-01-20
    • Jfe Steel CorpJfeスチール株式会社
    • YAZAWA YOSHIHIROHOSHINO TOSHIYUKI
    • C22C38/00B21B1/22C22C38/44C22C38/58
    • PROBLEM TO BE SOLVED: To provide a stainless-clad steel excellent in corrosion resistance.SOLUTION: The ratio of a concentration ratio (at%) Cr/Fe in a passivation film formed on the surface of the stainless-clad steel to a concentration ratio (at%) Cr/Fe in the stainless steel being a matrix phase is 1.2 or more. In addition, glossinesses (Gs(60)) in rolling direction (L), orthogonal direction (C) and rolling 45-degree direction relative to the rolling direction (D) on the surface of the stainless-clad steel when measured at 60 degrees in conformance with JIS Z 8741 "Mirror-surface glossiness - Measurement method" are 50 or more, respectively, and an average glossiness index calculated by following formula (1) is 60 or more, wherein the formula (1): average Gs(60)=(Gs(60)+2×Gs(60)+Gs(60))/4, average Gs(60): average glossiness index; Gs(60): glossiness in rolling direction (L); Gs(60): glossiness in orthogonal direction (C); Gs(60): glossiness in rolling 45-degree direction relative to the rolling direction (D).
    • 要解决的问题:提供耐腐蚀性优异的不锈钢复合钢。

      解决方案:形成在不锈钢的表面上的钝化膜中的Cr / Fe的浓度比(at%)与不锈钢中的Cr / Fe的浓度比(at%)为矩阵的比率 相位为1.2以上。 此外,当在60度测量时,在不锈钢复合钢表面上的轧制方向(L),正交方向(C)和相对于轧制方向(D)的轧制45度方向的光泽度(Gs(60)) 根据JIS Z 8741“镜面光泽度 - 测量方法”分别为50以上,由下式(1)计算出的平均光泽度指数为60以上,式(1):平均值Gs(60 )=(Gs(60) L + 2×Gs(60) D + Gs(60) C )/ 4,平均Gs(60):平均光泽度指数; G(60) L :轧制方向的光泽度(L); G(60) C :正交方向(C)的光泽度; Gs(60) D :相对于轧制方向(D)滚动45度方向的光泽度。 版权所有(C)2012,JPO&INPIT