摘要
滚珠丝杠的热处理是制约数控机床加工精度的瓶颈问题,其淬火硬度不均匀、变形超差以及尺寸稳定性差是主要影响因素。在分析热处理工艺的基础上,提出了减小炉温波动幅度、调整冷处理温度和增加固溶处理、淬火前去除应力以及丝杠校直后去除应力等工艺措施,有效提高了残余奥氏体发生马氏体转变速度,使钢中碳化物呈细小颗粒状析出。结果能为滚珠丝杠的热处理工艺优化提供依据。
The heat treatment process of the ball screw is the bottleneck problem that restricts the machining precision of NC machine tools. The not-uniform quenching hardness, deformation out of tolerance, and poor dimensional stability are the main influencing factors. On the basis of analysis of heat treatment process, process measures（reducing the temperature fluctuation, adjusting cold treatment temperature, increasing the solid solution treatment, and eliminating stress before quenching and after straightening） were proposed. The process measures effectively improve the transformation speed of retained austenite, and make the carbides in the steel separate small granular carbides. The results can provide the basis for the optimization of heat treatment process of ball screw.
出处
《热加工工艺》
CSCD
北大核心
2015年第20期169-171,175,共4页
Hot Working Technology
基金
陕西省教育厅专项科研计划资助项目(2013JK1038)
陕西理工学院2015年校级横向资助项目(SXLG208021279)
关键词
滚珠丝杠
热处理工艺
瓶颈问题
ball screw
heat treatment process
bottleneck problem
