中文摘要：

概述了20CrMnTi钢的渗碳表面化学热处理工艺的研究现状及发展趋势。20CrMnTi钢被广泛地应用于制造抗压耐磨的齿轮轴、齿圈、齿轮等重载的机械零件。优良的表面热处理工艺是保证其高耐磨性、高强度的前提。渗碳是应用最早也最广泛的一种化学热处理方法,其具有适用性强、经济效益高便于在现有生产条件下结合实际需要推广应用等优点。

英文摘要：

the research status and development trend of the carburizing surface treating technologies of 20CrMnTi steel are summarized. 20CrMnTi steel is most widely used in the manufacture of overloading mechanical components, such as gear shaft, ring gear, gear of the antiwear. Generally speaking, the advanced surface treating technology leads to high wear resistance and high strength. Carburizing is the earliest and most widely used method of chemical heat treatment, and it is with the advantages of the high applicability and economic benefit, and easy to spread in the existing production conditions combining with actual needs.