Changsha Sollroc Engineering Equipments Co., Ltd
FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.
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Ql60 Down The Hole Hammer Mining Machinery Water Well Drilling Tools
Product description
Down-the-hole drilling (DTH) essentially involves a drilling hammer at the bottom of a drill string. It relies on three elements for drilling holes: bit loading (weight), rotation and air. These active elements combine to be efficient at crushing rock. As the drill string slowly rotates, the drilling hammer is forced into the rock repeatedly. Striking power is provided by compressed air driving a piston inside the hammer.
Product Advantages:
1. For such projects as the drill bit break,retrieving very difficult,we specially designed a safe and reliable anti-shedding device for the bit.
2. The check valve can be replaced to replaced to the one with bigger air controlling hole to provide more efficient cutting discharge.
3. The top sub and the drive chuck have special thread,which can achieve an easier disassemble.
DTH Hammer specification:
| Shank | Length(less bit) | External diameter | Top Sub Thread | Weight(less bit) | Hole Range |
| DHD360/COP64 | 1248mm | 148mm | API 3 1/2''REG | 100kg | 155-190 |
| SD6 | 1261mm | 148mm | API 3 1/2''REG | 100kg | 155-190 |
| QL60 | 1212mm | 148mm | API 3 1/2''REG | 95kg | 155-190 |
Face shape Features
Drop Center
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
Concave Face
The all-round application bit face special for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
Flat Face
This kind of face shape is suitable for very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.
Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
Product application
At present, DTH drilling tool is widely used in underground mining, quarries, hydraulic and Hydro-Power Engineering, water well drilling, Mineral exploration, anchoring hole drilling, geothermal engineering, Subway excavation, another civil engineering.
DTH is one of the most efficient ways of drilling rock, using a rapid hammer action to break the rock into sizeable chips which are then evacuated from the bore hole by the air exhausted from the DTH Hammer. The technique provides fast drilling of accurately aligned, straight and clean holes in most ground conditions.
Company informaiton
At sollroc, customer satisfaction is our top priority. Our sales team takes a proactive approach in meeting customers’ needs. We take the time to get to know you and learn about your operations so we can better assist you. We strive to meet customers’ needs by supplying the tools and equipment you need when you need them, providing product support, and following through with excellent customer service every step of the way.