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The Thermal Performance of the Bonded Carbide Tipped Tool as Compared with Commercially Available Tools

A finite element package has been used to predict the distribution of temperature and principal stresses in bonded and commercial carbide tip, tools. In the bonded tool, the temperature drop across the bond line was found to be small, due to its small thickness The results show that the thermal stresses dominate even under high levels of cutting loads, and were found to be largest further away from the tool tip, while the normal stresses were insignificant in the bond layer. Furthermore, an assessment of the performance of the bonded cutting tool in the presence of a load simulating the cutting process was carried out in relation to the commercial tool. The bonding material was found to decrease the temperature range in the steel shank while increasing it in the carbide tip. It was also concluded that, in general, the stresses arising are smaller in the bonded tool than in the commercial one. This has an advantage in reducing the wear in the carbide tip and increasing the tool life in addition to the known economical advantages found by other investigators.