Research Article

Prediction Model of Drilling Performance for Percussive Rock Drilling Tool

Table 2

Parameters of the button impact tests.

DescriptionValue

Button diameter
Button height
Button material
Feed force of actual vehicle
Feed force of a single button
Drop height
Rock specimen
Rock size
18.0 mm
22.0 mm
Tungsten carbide
43.4 kN
2.9 kN
1.5 m
Hwangdeung granite
300 mm (L) × 300 mm (W) × 600 mm (H)