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    • 2. 发明授权
    • Method and apparatus for grinding the running and/or guide surfaces of
rails or the like
    • 用于研磨轨道等的行进和/或引导表面的方法和装置
    • US5031365A
    • 1991-07-16
    • US441762
    • 1989-11-27
    • Gerhard ArndtHans Guntermann
    • Gerhard ArndtHans Guntermann
    • E01B31/17
    • E01B31/175
    • A method for grinding the running and/or guide surfaces of rails or the like, where the running surfaces are ground by an endless revolving abrasive belt which can be moved against the running surfaces, wherein the abrasive belt revolves transversely to the longitudinal axis of the rail and embraces, at least partially with prestress, the running and/or guide surfaces. An apparatus for performing the method includes a mobile grinding machine, which an endless abrasive belt, guided at least on one rail of the track, which abrasive belt revolves over a drive roller and a reversal arranged at a distance therefrom and which can be moved by these against the surfaces of the rail to be ground. The reversal is formed of two reversing rollers which have a comparatively small spacing from each other, that the axes of the reversing rollers and of the drive roller 19 being arranged to be parallel to the longitudinal axis of the rail. Thus, the abrasive belt revolves transversely to the longitudinal axis of the rail and at least one reversing roller can be lowered beneath the upper edge of the running surface of the rail for partially embracing the surfaces of the rail.
    • 一种用于研磨轨道等的行进和/或引导表面的方法,其中运行表面通过能够抵靠运行表面移动的环形旋转磨料砂研磨,其中研磨带横向于纵向轴线旋转 轨道和至少部分地具有预应力,运行和/或引导表面。 一种用于执行该方法的装置包括移动研磨机,该移动研磨机将至少在轨道的一个导轨上引导的环形研磨带,该研磨带在驱动辊上旋转,并且反转布置在距离其一定距离处并且可以通过 这些对着待磨削轨道的表面。 反转由具有彼此相对较小间隔的两个反转辊形成,反转辊和驱动辊19的轴线布置成平行于轨道的纵向轴线。 因此,研磨带横向于轨道的纵向轴线旋转,并且至少一个反转辊可以在轨道的行进表面的上边缘的下方降低以部分地包围轨道的表面。
    • 3. 发明授权
    • Process for the aluminothermic welding of rails
    • 钢轨的铝热焊接工艺
    • US3942579A
    • 1976-03-09
    • US587572
    • 1975-06-17
    • Hans Guntermann
    • Hans Guntermann
    • B23K23/00E01B11/52
    • E01B11/52B23K23/00B23K2201/26
    • A process for the aluminothermic welding of rails in which the rail ends to be joined are surrounded by a prefabricated, dry refractory casting mold and sealed from the rails with plastic mold materials, such as, moistened sand; a reaction crucible is arranged above the casting mold and filled with an aluminothermic reaction mixture; the rail ends are preheated, for example, by burning a mixture of propane and oxygen and directing the flames downwardly into the riser-duct of the casting mold for a period of time up to about 2 minutes and at a temperature between about 300.degree. C and about 700.degree.C; the aluminothermic reaction mixture in the reaction crucible is ignited; and, upon completion of the reaction of the aluminothermic reaction mixture, the lower outlet of the reaction crucible is opened and the steel melt is poured into the mold.The amount of aluminothermically produced steel utilized is between about 0.15 and about 0.25 parts by weight based on the weight per meter of the rails to be welded.
    • 用于预制的干式耐火铸造模具围绕轨道端部要连接的轨道的铝热焊接方法,并用诸如润湿砂的塑料模具材料从轨道密封; 反应坩埚布置在铸模的上方并填充有铝热反应混合物; 轨道端部被预热,例如通过燃烧丙烷和氧气的混合物并将火焰向下引导到铸模的提升管中达一段时间直到约2分钟,并且在约300℃的温度 约700℃; 反应坩埚中的铝热反应混合物被点燃; 并且,在铝热反应混合物反应完成后,打开反应坩埚的下部出口,将钢液注入模具中。