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Effects of the Laser Process Parameters on Kerf Quality

Teeraphat Kongcharoen and Maturose Suchatawat
Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand

Abstract—This paper presents an experimental study on the effects of the process parameters on laser cutting of 3 mm thick mild steel plates. The parameters investigated includes laser power, gas pressure and cutting speed. The kerf width and the cut edge roughness are examined. The laser source used is a continuous wave CO2 laser with maximum power of 4 kW. The obtained results show that as the laser power increases, the average kerf width increases. Oxygen gas pressure also has a remarkable effect on the cut edge roughness. It is found that as the gas pressure increases, the roughness is increased. Increasing of the cutting speed gives the narrower average kerf width and the smoother cut surface. 

Index Terms—laser cutting, kerf width, cut edge roughness, striation formation

Cite: Teeraphat Kongcharoen and Maturose Suchatawat, "Effects of the Laser Process Parameters on Kerf Quality," International Journal of Mechanical Engineering and Robotics Research, Vol. 7, No. 2, pp. 164-168, March 2018. DOI: 10.18178/ijmerr.7.2.164-168