| Popis: |
Metal casting is one of the primary manufacturing processes used in industries. It is also one of the economical routes of producing components varying from simple to complex shapes. But conventional casting methods possess some drawbacks in terms of higher energy consumption, longer melting times, air pollution and higher defects. Microwave-Assisted Casting is one of the latest manufacturing technique which can overcome these drawbacks owing to its several advantages like time-saving, clean and environmentally friendly. This paper reports on in situ microwave-assisted die casting process of bush with Φ35 mm OD, Φ25 mm ID and 40 mm Length, using microwave furnace at 2.45 GHz and 1.4 kW and also conventional die casting process by using muffle furnace of 3.5 kW of ASTM B23 Tin-based Babbitt Alloy. It was found that microwave-assisted die casting process reports time-saving of 07 min and power-saving of 1.1 kW h as compared with the conventional die casting process. Further SEM images of microwave bush casting showed uniform grain distribution as compared to SEM images of conventional die-casted bush. It was found that microwave-assisted die-cast bush is having 1.4 times higher hardness as compared with that of conventional die-cast bush. |
