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Machined Surface Analysis at High Cutting Speed Using Carbide Drill in a Al-si Alloy
| Content Provider | Semantic Scholar |
|---|---|
| Author | Martins, Paulo Rubens, José Cordeiro, Gilmar Da Silva Brito, Pedro Paiva |
| Copyright Year | 2015 |
| Abstract | Holes are present in various diameters and depths in cylinder heads of Al-Si alloys, and need to be machined in the shortest time possible within narrow dimensional, shape and surface roughness tolerance ranges. In the present work, a hard metal cutting tool was used to perform drilling operations on an automotive Al-Si alloy, with the objective of evaluating tool wear and quality of the machined surfaces. To this end, the evolution of hole diameter, surface parameters (Ra, Rt and Rz) as well as tool flank wear were analyzed as a function of the number of machined parts, up to 11,500 operations. The selected cutting parameters were 8,000rpm rotation, 2,880 mm/min forward speed and 340 m/min cutting speed. The results showed that after 8,000 holes tool wear increases markedly, which led to similar increases in surface roughness and hole diameter. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://paginas.fe.up.pt/clme/m2d2015/Proceedings/data/papers/5675.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
