Abstract
Temperature variation of the drill bit in the process of rock drilling was studied systematically. Through the analysis of heat transfer process of the drilling in rock drilling, differential equations which described the temperature fluctuations in the process of rock drilling were established and various factors which affected the temperature fluctuations of the drill bit were also analyzed. Based on the analysis of the conversion between thermal and power in rock drilling, analytical method for temperature computation of the drill bit was given. Analytical equation of the bit temperature was derived associated with the analytical expression of cutting temperature. The results show that the temperature of drill bit is influenced by geometry condition, thermal properties, drilling element, and so on. The average rising temperature is proportional to the square root of forward speed v of the drill bit when the other conditions remain unchanged.
| Original language | English |
|---|---|
| Pages (from-to) | 3164-3169 |
| Number of pages | 6 |
| Journal | Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) |
| Volume | 42 |
| Issue number | 10 |
| Publication status | Published - Oct 2011 |
| Externally published | Yes |
Keywords
- Cutting
- Drill
- Penetration
- Rock
- Temperature