Research Information System
Mühendis ve Makina, vol.66, no.718, pp.23-38, 2025 (TRDizin)
Powder metal parts are used in many applications because of widely advantages. Induction sintering is a rapid sintering method, and it is moving towards to an important alternative process of conventional sintering by means of time and energy saving and more improved mechanical properties. In this study, five different commercial component were pressed with dual axis press under 600-800 MPa pressure. The samples were sintered with conventionally and with medium frequency (30 kHz) induction sintering mechanism. The body of the samples was heated directly by induction sintering. Comparison of the mechanical properties and microstructures of samples which produced by conventional and induction sintering methods were carried out. In the tests, compression testing, HRB hardness testing and microstructural examination were used for each component individually or in combination, taking into account customer specifications. As a result of study, although there were differences depending on the alloys and the shape of the powder metal component, when porosity, hardness and compression strength are taken into account, it has been observed that with the induction sintering method, sintering times of 30 minutes could be reduced to 15 minutes, resulting in a time reduction of approximately 50%. While a maximum difference of 11% was observed in the sample with the worst result in the compression test in induction sintering compared to conventional sintering, it was observed that the compression strength obtained with conventional sintering in other samples could be achieved with the induction sintering method. When the hardness and porosity data were examined, it was seen that induction sintering can reach the targeted conventional sintering values. It has been observed that a hardness increases of up to 20 HRB is provided in the best case. When the pre-sintering time is included, an 80 % time advantage is observed compared to conventional sintering.