Reaserch on Absorption of Gaussian Laser for the Cutting Surface of 45% SiCp/Al Composites

doi:10.3969/j.issn.1000-1093.2020.05.020

Abstract

Abstract: In order to investigate the temperature variation of cutting surface of 45% SiC_p/Al composites during Gaussian laser irradiating, the temperature variations of 45% SiC_p/Al composites at different phases are calculated based on the Fourier heat transfer theory and the thermal physical properties of silicon carbide particles and aluminum matrix. A finite element model (FEM) is developed for predicting the temperature field in LAM of 45% SiC_p/Al composites. The influence laws of laser power, laser scanning speed, laser spot diameter, and rotational speed on the laser heating temperature field were obtained by FEM simulation. An empirical formula for the temperature at the cutting point from the workpiece surface is established based on the influence law of cutting parameters on heating temperature. The laser assisted cutting experiments of carbide stools and polycrystalline diamond (PCD) cutters are made based on the temperature field obtained by the empirical formula for the temperature at the cutting point. Carbide tools and PCD cutters are used for laser assisted cutting experiment on 45% SiC_p/Al composites. The results indicate that the ratio of aluminum to silicon content is only 1.187, and the absorption rate of laser is 0.21. However, the ratio of aluminum to silicon is 1.047, and the absorption of laser is 0.23 when the PCD cutters are used. Key

Key words: 45%SiC_p/Alcomposite, surfacecondition, laser, absorbtion

CLC Number:

TH161⁺.14

KONG Xianjun, WANG Minghai, WANG Ben, ZHENG Yaohui, WANG Yang, YANG Lijun. Reaserch on Absorption of Gaussian Laser for the Cutting Surface of 45% SiC_p/Al Composites[J]. Acta Armamentarii, 2020, 41(5): 1007-1015.

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第41卷第5期2020 年5月
兵工学报ACTA ARMAMENTARII
Vol.41No.5May2020

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Reaserch on Absorption of Gaussian Laser for the Cutting Surface of 45% SiC_p/Al Composites

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