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    • 2. 发明授权
    • Method for heat-treating profiled rolling stock
    • 异型车辆的热处理方法
    • US06224694B1
    • 2001-05-01
    • US09570455
    • 2000-05-12
    • Georg PrskawetzPeter PointnerAlfred Moser
    • Georg PrskawetzPeter PointnerAlfred Moser
    • C21D904
    • C21D1/63C21D8/00C21D9/04C21D2211/009C21D2221/02
    • Method for heat-treating profiled rolling stock, including track and railroad rails, having a profiled surface and increased heat removal from portions of the profiled surface during cooling in the gamma range of an iron based alloy material. The method includes aligning the profiled rolling stock, at an average temperature of between 750° C. and 1100° C., straight in its longitudinal direction by plastic shaping, and moving the aligned profiled rolling stock, in its aligned state, in a transverse direction and holding same there. The method also includes evenly cooling of the aligned profiled rolling stock, in a first cooling, to a temperature below 860° C., with the same local cooling intensity, by radiation, in still air, removing heat from the first cooled profiled rolling stock, in a second cooling, in the longitudinal direction with an intensity which locally is essentially the same, but, when viewed in cross section, is circumferentially different, and increasing the cooling intensity in at least one zone at the circumference of the first cooled profiled rolling stock. Greater cooling intensities are assigned to areas with one of a large cross sectional ratio relative to the circumference and a large portion of volume with one of respect to the surface and a high mass concentration. The method further includes increasing a cooling speed of areas of the increased intensely cooled profiled rolling stock having locally high temperatures, and bringing these areas to a conversion temperature, under which cooling conditions, a fine pearlitic grain structure, free of martensite, is formed, and cooling the increased intensely cooled profiled rolling stock from the conversion temperature to room temperature, at the same local cooling intensity, in still air.
    • 在铁基合金材料的γ范围内的冷却过程中,对具有异形表面的成型车辆进行热处理的轮胎车辆的方法,其具有成型表面和增加的成形表面部分的热量去除。 该方法包括在750℃至1100℃之间的平均温度下对准成型的车辆,其塑性成型在其纵向方向上是直的,并且以对准的状态将对准的异形轧制车辆以横向 方向并保持相同。 该方法还包括在第一次冷却中将对准的异形轧制车辆均匀地冷却至低于860℃的温度,以相同的局部冷却强度通过辐射在静止空气中,从第一冷却型轮胎 在第二冷却中,在纵向具有局部基本相同的强度,但是当在横截面中观察时,在周向上不同,并且增加在第一冷却型材的圆周处的至少一个区域中的冷却强度 机车车辆 更大的冷却强度分配给具有相对于圆周的大横截面比率的区域和相对于表面具有高质量浓度的大部分体积的区域。 该方法还包括提高具有局部高温的增加的强冷型成形机车车辆的区域的冷却速度,并且使这些区域成为形成冷却条件的不含马氏体的细小珠光体组织的转化温度, 并且在静止的空气中以相同的局部冷却强度将增加的强冷却成型的车辆从转换温度冷却到室温。
    • 3. 发明授权
    • Process and device for hardening a rail
    • 硬化轨道的工艺和装置
    • US06432230B1
    • 2002-08-13
    • US09665121
    • 2000-09-20
    • Norbert KöckPeter Pointner
    • Norbert KöckPeter Pointner
    • C21D904
    • C21D9/06C21D1/02C21D2221/02
    • Process and device for hardening a rail. The process for hardening a rail or part thereof by transforming it from an austenitic structure into a different microstructure that is stable at room temperature comprises aligning, horizontally positioning, and fixing in axial alignment to secure against bending, the rail in its austenitic state; and while keeping the rail fixed in axial alignment and secured against bending, force-cooling the rail or part thereof to allow the austenitic structure to be transformed into said different microstructure. The device for hardening a rail or part thereof by force-cooling comprises a support for supporting the rail; a cooling device for force-cooling the rail or part thereof; and at least two fixing devices for axially aligning and securing the rail against bending during the force-cooling.
    • 硬化轨道的工艺和装置 轨道或其部分的硬化过程通过将其从奥氏体结构转变成在室温下稳定的不同微观结构来包括对准,水平定位和固定轴向对准以确保轨道处于其奥氏体状态的弯曲; 同时保持轨道固定在轴向对准并且防止弯曲,强制冷却轨道或其部分,以允许奥氏体结构转变成所述不同的微结构。 用于通过强制冷却来硬化轨道或其一部分的装置包括用于支撑轨道的支撑件; 用于强制冷却轨道或其一部分的冷却装置; 以及至少两个固定装置,用于在强制冷却期间轴向对准和固定导轨以抵抗弯曲。
    • 6. 发明授权
    • Heat-treated profiled rolling stock
    • 热处理异型机车车辆
    • US06419762B2
    • 2002-07-16
    • US09814710
    • 2001-03-23
    • Georg PrskawetzPeter PointnerAlfred Moser
    • Georg PrskawetzPeter PointnerAlfred Moser
    • C22C3858
    • C21D1/63C21D8/00C21D9/04C21D2211/009C21D2221/02
    • A railroad rail of a steel alloy having a pearlitic microstructure, which rail has a good long-term serviceability, high ductility and high abrasion resistance of the working surface at the rail head, the rail being formed of a steel alloy having a chemical composition in weight % of 0.4 to 1.0 carbon, 0.1 to 1.2 silicon, 0.5 to 3.5 manganese, up to 1.5 chromium, optionally other alloy elements below 1 weight %, the rest being iron and impurities, and at least the rail head having a portion of fine pearlitic microstructure and a hardness between 340 HB and 425 HB down to a sufficient depth from the top surface, the arrangement and the extension of the portion of fine pearlitic microstructure in the rail cross section being even along the entire length of the rail.
    • 一种具有珠光体组织的钢合金轨道,该轨道具有良好的长期可使用性,高延展性和在轨头处的工作表面的高耐磨性,该轨道由具有化学组成的钢合金形成 重量百分数为0.4至1.0碳,0.1至1.2硅,0.5至3.5锰,至多1.5铬,任选的其他合金元素低于1重量%,其余为铁和杂质,至少轨头具有一部分细 珠光体组织和硬度在340HB与425BH之间,从上表面到足够的深度,导轨横截面中微细珠光体组织部分的布置和延伸甚至沿轨道的整个长度均匀。