The brazed grinding wheels were fabricated by high-frequency induction brazing with varying temperature from 900 to 1000 °C. The morphology and chemical composition of the brazing resultants around cubic boron nitride (cBN) grit were examined using scanning electron microscopy (SEM) and energy dispersion X-ray spectrometry (EDS) techniques. Grinding tests of titanium alloy Ti6Al4V were carried out. The results showed that the reaction layer composed of Ti-N and Ti-B compound was formed between the cBN grit and filler alloy. The specific grinding force and specific grinding energy of brazed cBN wheels were much lower than those of the electroplated counterpart during grinding of titanium. In particular, a good sharpness and bonding strength of brazed cBN wheel were obtained when the brazing temperature is 940 °C. With the brazing temperature increase, the main wear pattern of brazed cBN wheel is pullout, breakage, and crush, successively, while adhesion is dominant on the surface of the electroplated cBN wheel.
The International Journal of Advanced Manufacturing Technology – Springer Journals
Published: Nov 19, 2017
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