Abstract

The present study investigates the temperature rise in the cutting zone and its influences on chip formation behavior in high-speed drilling. The novelty of the study is to prepare a neutron-absorbing B4C reinforced AA6351 composite subjected to the application of nuclear fuel transportation and storage. The stir casting method is used to prepare the composite. The TiN-coated solid carbide drill tool with different point angles of 118° and 135° is used to machine the composite. The experimental results show that the spindle speed majorly influences on temperature rise rather than feed rate for both the point angle tool. The maximum temperature value of 150.3 °C is noted for 135° point angle at higher spindle speed and feed rate. The chip formation with respect to different input conditions is analyzed through scanning electron microscopy and thermographic images. It is evident that the mass of chip extraction is increased with respect to an increase in spindle speed. The discontinuous and low pitch conical chips reduced the chip clogging and improved the drilling quality.

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