针对长期困扰我国轴承、模具疲劳寿命不足的问题，开展系统的基体强韧化、超细化热处理技术研究，包含轴承钢基体强韧化、超细化热处理技术的优化和固化研究，以及模具钢基体强韧化、超细化热处理技术的推广开发研究；基体强韧化、超细化的机理及其对强韧化和疲劳影响机理研究研究；基体强韧化、超细化对不同纯净度指标轴承钢的疲劳寿命作用效果及影响机理研究。突破长期困扰我国高碳合金钢疲劳寿命不足的组织细化均匀化技术瓶颈，实现我国量大面广轴承钢、模具钢组织均匀性大幅提升、使用寿命达到国际先进水平，形成成熟系统的高精度长寿命轴承钢、模具钢基体强韧化热处理控制关键技术及其技术原理，用于指导课题二和课题三开展轴承及模具的热处理技术应用研究，使我国高碳特殊钢的整体技术水平显著提升。

Aiming at the problem of insufficient fatigue life of bearings and moulds in China for a long time, the systematic research on matrix strengthening and toughening and ultra-fine heat treatment technology was carried out, including the research on optimization and solidification of bearing steel matrix strengthening and toughening and ultra-fine heat treatment technology, as well as the promotion and development of mold steel matrix strengthening and toughening and ultra-fine heat treatment technology; Research on the mechanism of strengthening, toughening and ultra-refining of the matrix and its influence on strengthening, toughening and fatigue; Study on the effect and mechanism of matrix strengthening, toughening and ultra-refining on the fatigue life of bearing steel with different purity indexes. Break through the bottleneck of homogenization technology of structure refinement, which has long plagued the fatigue life of high carbon alloy steel in China, and realize the substantial improvement of the uniformity of the structure of large and wide range of bearing steel and die steel in China, and the service life reaches the international advanced level, and form a mature and systematic key technology and technical principle of heat treatment control of high precision and long life bearing steel and die steel matrix strengthening and toughening, It is used to guide Topic 2 and Topic 3 to carry out the application research of heat treatment technology of bearings and dies, and significantly improve the overall technical level of high carbon special steel in China.