Development Of Forced Cooling Technology On Drilling Utilizing Strong Alkaline Water With Microbubbles
| Fatin Publikasaun | : | |
| Tinan Publikasaun | : | 0000 |
| Autor | : | Júnior Raimundo da Cruz, B.Mc., M.Eng., Dr.Eng,,, |
| Link | : | http://fect.untl.edu.tl/file_veritas/41Veritas.compressed.pdf |
Abstract
In machining almost all of the energy that expanded in cutting is transformed into heat. Proper selection and use of cutting fluids for cooling can help improve tool life, better surface roughness, reducing scrap and waste. In case of drilling processing, as much cutting oil has been used for lubricating and cooling, it is considered as a problem for environment when much waste are produced. Therefore in this research, the forced cooling technology on drilling using strong alkaline water with microbubbles was developed. Investigation for the corrosion resistance of the various materials were done. A through-hole drill was used and cooling effect of strong alkaline water with microbubbles was investigated. The tool life of the drill by drilling utilizing strong alkaline water with microbubbles was also evaluated by experiment. It is concluded from the results that; (1) Cooling of strong alkaline water with microbubbles was very effective, (2) Heat transfer coefficient of drilling using strong alkaline water with microbubbles was higher than conventional wet drilling, (3) Tool life of drilling using strong alkaline water with microbubbles was improved compared to the conventional wet drilling.
Keywords: Drilling, strong alkaline water, through-hole drill, cooling, heat transfer coefficient