Abstract
Nickel-based superalloy is widely used in aviation, aerospace, shipping and petrochemical industry. An experimental investigation was conducted to analyze the effects of cutting parameters on chip deformation during drilling process of nickel-based superalloy FGH97. Drilling experiments have been carried by means of a machining center YCM-V116B and TiN/TiAlN coated carbide drill bit SECO made SD203-8.0-27-8R1. The chip root is obtained by means of ourselves-made device. The chip deformation decreases with the increasing of cutting speed during drilling process of Ni-based superalloy. The larger the feed rate, the less the chip deformation is. When cutting speed is from 6 m/min to 12 m/min, the shear angle of drilling changes from 14.8 degrees to 19.9 degrees. When feed rate speed is from 0.03mm per tooth to 0.06mm per tooth, the shear angle of drilling changes from 13.7 degrees to 17.4 degrees.
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