| URN | etd-0726117-184027 | Statistics | This thesis had been viewed 492 times. Download 1 times. |
| Author | Ting-Wei Liao | ||
| Author's Email Address | ltccb37110@gmail.com | ||
| Department | Institute Of Mechanical Engineering | ||
| Year | 2016 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 71 |
| Title | Study of EDM Characteristics for graphene powder suspension dielectric oil | ||
| Keyword | |||
| Abstract | ”@”@Electrical discharge machining, different from the traditional machining method, uses the heat generated from spark discharge for melt processing, and is suitable for processing materials with high hardness and high strength. However, the impact of sudden low and high temperatures in the discharge process will produce shallow pits, cracks, porosities and other defects on the surface of the workpiece, and these defects will decrease the precision and life of the finished product. In order to reduce surface defects after machining, the technology of adding powder in the discharge processing liquid is developed. ”@”@In this experiment, the SKD11 die steel was tested with electrolytic copper, and 0 g/l ~ 0.5 g/l graphene powder was added to the discharge processing liquid during discharge processing. The effects of different discharge durations of 25 £gs ~ 100 £gs and different currents of 0.5A ~ 12A on the material surface roughness, material removal rate and electrode consumption rate were explored, and the surface morphology improvement was observed. ”@”@From the experimental results, it is found that graphene powder has excellent conductivity,when 0.1 g/l is added. This together with the fact that powder can disperse the discharge energy can result in a good effect on surface roughness improvement. ”@”@Finally, when the surface of the workpiece is observed with a SEM electron microscope, it can be found that compared with the discharge processing liquid without the addition of graphene powder, adding graphene powder to the discharge processing liquid for processing can result in a better surface quality. |
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| Advisor Committee | |||
| Files | indicate in-campus access at 5 years and off-campus access at 5 years | ||
| Date of Defense | 2017-07-21 | Date of Submission | 2017-07-26 |