Computer modeling of temperature field formation in a carbide cutter during its induction brazing and quenching

The paper summarizes the results of numerical experiments to study a temperature field formation in the holder surface of a cutting tool during its induction brazing and further quenching. The author of the paper uses a previously developed computer model of a temperature field in a carbide cutting tool during its induction brazing. It is demonstrated that the entire brazing time can be divided into two stages in terms of the heating rate: the first stage—fast heating—lasting from the beginning until the magnetic transformation temperature is reached, while the second one covers the remaining brazing time. At the first stage the tool holder surface is heated 5–6 times faster than at the second stage. Based on the calculated results, a surface of parameters has been plotted in the three-dimensional space of time—frequency—current in the induction coil; it can be used for choosing appropriate induction brazing conditions.