齿轮钢高温渗碳和稀土微合金化的应用及研究现状

Applications and Research Status of High Temperature Carburizing and Rare Earth Microalloying for Gear Steel

随着关键零部件用高品质渗碳钢的需求量日益增长与“双碳”目标的提出,对渗碳齿轮钢的耐磨性以及强韧性等综合性能提出了更高的要求。开发出高效、节能、低碳、经济的稀土微合金化高温渗碳技术是渗碳齿轮钢的发展方向。文章通过介绍国内外高温渗碳齿轮钢的应用及发展现状,讨论稀土在高温渗碳齿轮钢中应用的关键问题以及组织性能的调控,总结了稀土微合金化齿轮钢高温渗碳的应用与发展趋势,对于开发具备稀土特色的高温渗碳齿轮钢具有重要的意义。

With the increasing demand of high quality carburizing steel for key spare parts as well as proposal of“carbon peaking and carbon neutrality goals”,the requirements for such comprehensive properties of carburizing gear steel as wear resistance and strength and toughness are higher.It is the development direction of carburizing gear steel to develop high efficiency,energy saving,low carbon and economic high temperature carburizing technology with rare earth microalloying.In the paper,it is discussed the key problems and regulation of microstructure and properties for applications of rare earth in high temperature carburizing gear steel as well as summarized the applications and development trend of high temperature carburizing for gear steel with rare earth microalloying through introducing the applications and development situations of high temperature carburizing gear steel at home and abroad,which are of great significances for developing high temperature carburizing gear steel with rare earth characteristics.