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1. 发明授权

US6145194A Method for repairing a shrink-fitted turbine disc 有权
标题翻译：修复收缩式涡轮盘的方法
公开(公告)号：US6145194A
公开(公告)日：2000-11-14
申请号：US321703
申请日：1999-05-28
申请人： Ronald E. Munson , Shane Joseph Findlan , David W. Gandy , Ramaswamy Viswanathan
发明人： Ronald E. Munson , Shane Joseph Findlan , David W. Gandy , Ramaswamy Viswanathan
IPC分类号： B23P6/00 , C21D9/50 , F01D5/00 , B23P15/00
CPC分类号： B23P6/005 , C21D9/50 , F01D5/005 , Y10T29/49318 , Y10T29/49336
摘要： A method for repairing a shrink-fitted turbine disc without removing the disc from the shaft. The method is composed of two basic steps: (1) depositing one or more weld layers in a vicinity of a defective region of the disc using a temperbead welding process and (2) heat treating the disc using an induction heating process. In a first embodiment of the method, the heat treating step includes heating a heat-affected zone of the disc in a vicinity of the one or more weld layers to a temperature T.sub.h, heating a rim region of the disc to a temperature T.sub.r and heating a bore region of the disc to a temperature T.sub.b, where T.sub.h, T.sub.r >T.sub.b. In a second embodiment of the method, the heat treating step includes heating a region of the disc in a vicinity of the one or more weld layers using the induction heating process and concurrently cooling a bore region of the disc. In a third embodiment of the method, the heat treating step includes heating at least a portion of the disc using the induction heating process and concurrently heating the shaft to maintain a predetermined temperature differential between the bore region of the disc and the shaft. In a fourth embodiment of the method, the heat treating step includes heating at least a portion of the disc using the induction heating process and concurrently heating the shaft to maintain a uniform temperature between the bore region of the disc and the shaft.
摘要翻译：一种用于修复收缩式涡轮盘而不从轴移除盘的方法。该方法由两个基本步骤组成：（1）使用调温焊接工艺在盘的缺陷区域附近沉积一个或多个焊接层，以及（2）使用感应加热工艺对所述盘进行热处理。在该方法的第一实施例中，热处理步骤包括将一个或多个焊接层附近的盘的热影响区域加热到温度Th，将盘的边缘区域加热到温度Tr并加热盘的钻孔区域到达Tb，其中Th，Tr> Tb。在该方法的第二实施例中，热处理步骤包括使用感应加热过程在一个或多个焊接层附近加热盘的区域，同时冷却盘的孔区域。在该方法的第三实施例中，热处理步骤包括使用感应加热过程加热盘的至少一部分，同时加热轴以保持盘的孔区域和轴之间的预定温差。在该方法的第四实施例中，热处理步骤包括使用感应加热过程加热盘的至少一部分，同时加热轴以在盘的孔区域和轴之间保持均匀的温度。

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