Tech Breakthroughs for DTH Drill in Ultra-Hard Rock

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  1. New 35MPa ultra-high pressure drills boost efficiency by 40% in f>12 rock. “Pulse impact” creates stress wave superposition, cutting crushing energy by 25%.DTH drill
  2. Tungsten carbide gradient bits (HRC62) last 15 hours. Pre-split blasting with 3 holes (1.5m deep) forms micro-cracks in rock.
  3. Drilling resistance drops 35%; 1m time shortens from 8 to 5.2 minutes. 20kHz sonic vibration reduces rock fatigue strength by 40%.

 

Sonic + impact synergy lifts f=15 basalt efficiency by 52%, with 30% higher equipment cost.