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1. 发明授权

US06177205B1 Process for producing a permanent way component and such a component 失效
标题翻译：用于制造永久性路径部件和这种部件的方法
公开(公告)号：US06177205B1
公开(公告)日：2001-01-23
申请号：US09180275
申请日：1998-11-06
申请人： Alfred Kais , Gerhard Ratz , Walter Kunitz
发明人： Alfred Kais , Gerhard Ratz , Walter Kunitz
IPC分类号： E01B712
CPC分类号： E01B7/10 , B23K35/004 , C21D9/04 , C21D2211/002 , C21D2211/008 , C21D2211/009 , Y10T428/12937 , Y10T428/12965
摘要： A process for manufacture of a railroad track part, in particular a large points part, with rail parts such as a frog point and connecting rails, and the track part obtained. The track part is made of materials of differing composition, one of which is a carbon steel and one of which is an austenitic manganese steel, which are connected by welding and are subsequently subjected to a joint heat treatment. To permit joining of the materials without negative effects on their properties, the parts are joined directly by electron beam welding or indirectly via an intermediate layer comprising a nickel-based alloy, the joined parts then being heated to a temperature T and held over a time t such that for the austenitic manganese steel, solution annealing takes place, and for the carbon steel, austenitizing takes place. The railroad track part is partially quenched after the holding time t at temperature T, such that the austenitic manganese steel is provided in an sustenitic structure and the carbon steel is in a mixed structure with at least bainite and pearlite contents.
摘要翻译：一种用于制造具有诸如青蛙点和连接轨道的轨道部分的轨道部分，特别是大点部分的方法和获得的轨道部分。轨道部分由不同组成的材料制成，其中一个是碳钢，其中一个是奥氏体锰钢，它们通过焊接连接，随后进行联合热处理。为了允许材料的接合而对其性能没有负面影响，部件通过电子束焊接直接接合或通过包括镍基合金的中间层间接接合，然后将接合部分加热到温度T并保持一段时间这样对于奥氏体锰钢，进行固溶退火，对于碳钢，发生奥氏体化。铁路轨道部分在保温时间t在温度T下部分淬火，使得奥氏体锰钢以维持性结构提供，并且碳钢是至少具有贝氏体和珠光体含量的混合结构。

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