Enhancing the tool life of aluminium oxide (Al2O3) inserts using hybrid microwave energy in dry machining of high strength steel (KRUPP 6582)
Alumina (Al2O3) is a high-performance ceramic material with outstanding physical properties. Alumina is regarded as an extremely hard mate�rial with excellent wear resistance. However, tool wear remains a severe issue of dry machining resulting in a reduction in tool life, increased tool cost and...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English English |
| Published: |
Springer Nature
2023
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/104723/2/104723_Enhancing%20the%20Tool%20Life.pdf http://irep.iium.edu.my/104723/8/104723_Enhancing%20the%20Tool%20Life_SCOPUS.pdf http://irep.iium.edu.my/104723/ https://link.springer.com/chapter/10.1007/978-981-19-9509-5_31 |
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| Summary: | Alumina (Al2O3) is a high-performance ceramic material with
outstanding physical properties. Alumina is regarded as an extremely hard mate�rial with excellent wear resistance. However, tool wear remains a severe issue of dry machining resulting in a reduction in tool life, increased tool cost and a higher frequency of tool changing. Therefore, in this study, Hybrid Microwave (HMW) energy is employed to improve mechanical properties and extend tool life. Three
different types of Alumina inserts were used. Al2O3 (HMW) was post-sintered with silicon carbide (SiC) as the susceptor, whereas Al2O3 (MW) was post-sintered with no susceptor. These two inserts were compared to the original sample Al2O3 (Untreated). The post-sintering processes lasted 20 min at 220 °C. Mechanical testing, such as density and hardness, was carried out. Dry machining was used to test the tool life
and wear resistance of these Alumina inserts at three different cutting speeds (198, 250, and 310 m/min) at a feed rate of 0.2 mm/rev and a depth of cut of 0.2 mm. This study employed a high-strength steel workpiece (KRUPP 6582). When compared to Al2O3 (MW) and Al2O3 (untreated) inserts, the results showed that the density and hardness of Alumina inserts were increased using the HMW post-sintering proce�dure by 3.6% and 6.3% respectively. The tool life of Al2O3 (HMW) has increased by
28%, while for Al2O3 (MW), only 8.8%. HMW has demonstrated good performance in enhancing the mechanical properties and tool life of Al2O3 in dry machining of high strength steel (KRUPP 6582). |
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