Abstract:  The rail grinding strategies and techniques were reviewed， and the key equipment of the grinding methods using grinding wheels（active grinding and high-speed passive grinding）and the milling and grinding compound process were summarized. Meanwhile， the research status of rail grinding stone（grinding wheel， equipped with rail grinding train and used for cutting tools）were reviewed from ingredients， forming processes， structural design and grinding performance evaluation criterions， etc. It was concluded that the fine formula design, scientific evaluation criterions, etc. were the main challenges for the development of high-performance grinding stones. Finally， it was pointed out that the greenization， standardization， and intelligence were the important directions for future development of grinding stone technology. 

Key words: rail grinding, grinding strategy, grinding equipment, grinding stone, evaluation criterion

摘要： 概述了钢轨打磨策略、钢轨打磨技术，并对国内外砂轮式打磨（主动打磨、高速被动打磨）、铣磨等关键装备进行了综述。同时，对于与砂轮式打磨车相配套且起关键切削作用的磨石（砂轮），从组分、成形工艺、结构设计、磨削性能评价方法等方面进行了详细评述，总结出精细的配方设计、科学的评价体系标准等是高性能磨石研制所面临的主要挑战。最后，从绿色化、智能化、标准化等方面对未来磨石技术的发展方向进行了展望。

关键词: 钢轨打磨, 打磨策略, 打磨装备, 磨石, 评价标准