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http://dx.doi.org/10.3795/KSME-A.2015.39.8.759

Study on the Effect of Thermal Property of Metals in Ultrasonic-Assisted Laser Machining  

Lee, Hu Seung (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Kim, Gun Woo (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Park, Jong Eun (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Yang, Min Yang (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Cho, Sung Hak (Div. of Nano-Convergence Manufacturing Systems Research, Korea Institute of Machinery and Materials)
Park, Jong Kweon (Dev. of Ultra-Precision Machines and Systems Advanced Manufacturing System Research, Korea Institute of Machinery and Materials)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.39, no.8, 2015 , pp. 759-763 More about this Journal
Abstract
The laser machining process has been proposed as an advanced process for the selective fabrication of electrodes without a mask. In this study, we adapt laser machining to metals that have different thermal properties. Based on the results, the metals exhibit a different surface morphology, heat-affected zone (HAZ), and a recast layer around the machined surface according to their thermal conductivity, boiling point, and thermal diffusivity. Then, we apply ultrasonic-assisted laser machining to remove the recast layer. The ultrasonic-assisted laser machining exhibits a better surface quality in metals with higher diffusivity than those having lower diffusivity.
Keywords
Heat Affected Zone; Recast Layer; Thermal Conductivity; Boiling Point; Ultrasonic Vibration; Thermal Diffusivity;
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