Lowering friction of ball screws made of different steel grades through ultrasonic impact treatment

被引：22
作者：
Amanov, A. [1 ]
Pyun, Y. S. [1 ]
机构：
[1] Sun Moon Univ, Dept Mech Engn, Asan 31460, South Korea
来源：
TRIBOLOGY INTERNATIONAL | 2018年 / 123卷
关键词：
Ball screw; X-ray diffraction; Friction; UNSM; NANOCRYSTAL SURFACE MODIFICATION; RESIDUAL-STRESS; FEED SYSTEM; ALLOY; WEAR; BEHAVIOR; TITANIUM;
D O I：
10.1016/j.triboint.2018.03.008
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Ball screws made of SCM445H, NF42CD4 and SAE4150 steel grades were treated by ultrasonic nanocrystal surface modification (UNSM) technique to boost their performance by improving the surface integrity and lowering the friction. It was found that the friction of the UNSM-treated ball screws reduced successfully thanks to the improvement in surface integrity, transformation of tensile residual stress into compressive residual stress. Suggested mechanisms concerning lowering the friction of ball screws were discussed. Consequently, the feasible possibility of adopting the UNSM technique to a ball screw in order to improve its performance and reliability through lowering the friction was systematically investigated. Accordingly, the application of UNSM technique is a crucial approach to determine the replacement of those three different steel grades.
引用
收藏
页码：105 / 119
页数：15
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