摘要
建立了轴承套在淬火冷却过程中的有限元模型,分析了硬度场变化规律和分布状态。模拟结果表明:轴承套硬度值沿径向分布从外表面向内表面逐渐递减,满足了轴承套内柔外刚的要求。将模拟硬度值与实测硬度值进行比较,一致性较好,证明所建模型的有效性。同时,利用PVD技术试制镀TiN涂层轴承套式滑动轴承牙轮钻头,进行台架试验以及现场实钻对比试验,试验结果表明:镀TiN涂层轴承套式滑动轴承牙轮钻头比原牙轮钻头耐磨性好,工作效率和寿命均有较大的提高。
Bearing carriage in quench cooling process was presented, the finite element model, and the hardness variation and distribution condition were analyzed. The simulation results show that the bearing carriage hardness value along the radial distribution from appearance to inside surface gradually diminishes, which meets the requirements of the bearing carriage inside and soft outside. To simulate hardness value compared with the measured hardness value, good consistency, proves the validity of the model. At the same time, PVD technology is used to manufacture TiN plating coating bearing sets of sliding bearing cone bit in bench test and on-site drilling and contrast test, the test results show that the bearing sets of sliding bearing cone bit TiN plating coating is better than the original bit wear, working efficiency and life expectancy are greatly improved.
出处
《热加工工艺》
CSCD
北大核心
2015年第12期182-186,共5页
Hot Working Technology
基金
四川省科技支撑计划项目(2014GZ0153)
四川省科技支撑计划项目(2009GZ0026)
关键词
轴承套
硬度场
数值模拟
台架试验
现场实钻对比试验
PVD
bearing bushing
hardness field
numerical simulation
experiment of the platform shelf
comparison test of actual drilling in the field
PVD （physical vapor deposition）
