金刚石与磨料磨具工程2017，Vol.37Issue(4)：38-43,6.DOI:10.13394/j.cnki.jgszz.2017.4.0008
超声拉伸下金刚石线锯的力学性能研究
Study on mechanical properties of diamond wire saw under ultrasonic tension
张辽远 1苏君金 1刘小栋 1关惠予 1刘炜1
作者信息
- 1. 沈阳理工大学 机械工程学院, 沈阳110159
- 折叠
摘要
Abstract
Mechanical properties of diamond wire saw under the action of ultrasonic vibration were studied.The vibration system and connection device were self-designed, and the uniaxial tensile tests were carried out for different diameters of diamond wire saw by use of the ultrasonic vibration system in an attempt to find the changes in mechanical properties of diamond wire saw under different frequencies and different amplitudes.Diamond wire saw crack growth mechanism and softening mechanism under the condition of ultrasonic tension were studied.Wire saw fracture morphology were analyzed using electron metallographic microscope with or without ultrasonic vibration.Results showed that the alternating stresses of wire saw were generated under the action of ultrasonic vibration, and that there appeared micro-cracks, which rapidly expanded and teared.High frequency vibration produced localized high temperature and accelerated diffusion process, which eventually developed into a macro defect.When the ultrasonic stretching frequency was loaded to 20 kHz, the crack growth rate could reach 10-9 ~ 10-8 mm/cycle.关键词
金刚石线锯/力学性能/超声振动/单向拉伸Key words
diamond wire saw/mechanical properties/ultrasonic vibration/uniaxial tension分类
机械制造引用本文复制引用
张辽远,苏君金,刘小栋,关惠予,刘炜..超声拉伸下金刚石线锯的力学性能研究[J].金刚石与磨料磨具工程,2017,37(4):38-43,6.
