Comparison of percussion laser drilling quality with and without water-based ultrasonic assistance. (December 2018)

• Record Type: Journal Article
• Authors: Wang, Houxiao; Xu, Guoxiang; Zhu, Sukai; Zhou, Wei; Ren, Naifei; Xia, Kaibo
• Is Part Of: Journal of manufacturing processes. Volume 36(2018)
• Page Start: 175
• Page End: 180
• Publication Date: 2018-12
• Subjects: Percussion laser drilling -- Water-based ultrasonic assistance -- Micro hole; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2018.10.001
• Languages: English
• ISSNs: 1526-6125

Abstract

Highlights: A water-based ultrasonic-assisted percussion laser drilling technique is reported. Ultrasonic assistance effectively improved percussion laser drilling quality. Recast layer thickness was reduced by using ultrasonic assistance. Abstract: A millisecond-pulsed percussion laser drilling technique using water-based ultrasonic assistance is reported for drilling nickel super-alloy GH4037 sheets with 12-mm-thickness. Influence of ultrasonic vibration on drilling quality including hole taper angle, hole sidewall quality, recast layer microstructure, and hardness distribution of hole heat affected zone (HAZ) is analyzed through comparing holes drilled without ultrasonic assistance. Recast layer reduction, grain refinement, and HAZ hardness increase induced by ultrasonic assistance are also analyzed. It is shown that ultrasonic vibration improves percussion laser drilling quality by reducing hole taper angle, cleaning hole sidewall, decreasing hole defects, reducing recast layer thickness, refining grains, decreasing hole sidewall surface roughness, and increasing micro hardness.