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Reverse Circulation DTH RC Hammer
RC series reverse circulation DTH Hammer is the most current deveXiHu (West EPT) Dis.Hu (West EPT) Dis.ed merchandise of our business. It is mostly utilized for deep exploration drilling and ore quality manage.
It has the following characteristics:
1. Primarily based on previous knowledge of normal hammers, blended with the functions of recerse circulation hammer, optimized interior composition and ideal power transfer, hence making sure the sequence of hammers deilling with quick smooth and continuous sampling.
two. The internal construction is quite straightforward with components of substantial rigidity, thus making certain EPTT lifestyle and easy servicing of the hammer.
3. The EPTion tube adopts an intergrative style and can be changed with no disassembling the hammer. With carburizing treatment, it has good abrasive resistance.
4. Geared up with bits designed with patent. Basically by replacing the drill little bit, the same hammer can drill holes of distinct sizes guaranteeing that the sample is not contaminated.
5. In difficult situation this kind of as free soil, tough rock and a lot of h2o eXiHu (West EPT) Dis.sts, sampling can be accomplished nicely.
Working principle
one. With the piston resting on the percussion little bit and the hammer closed up in the drilling place, higher strain air is directed into the base chamber of the Hammer and the piston lifts. This commences the piston cycle.
2. As the piston travels upwards it varieties the prime chamber by forming a seal with the inner tube and the ID the piston. Even more movement seals the port that feeds the bottom chamber and also EPTTltaneously releases the seal on the bottom chamber making it possible for the air to expand and exhaust down the splines of the percussion little bit. At the exact same time the Prime chamber port is opened which feeds the substantial strain air into the beforehand fashioned prime chamber therefore rising the stress above the piston and forcing it back down.
3.In the course of the down cycle or EPTT stroke the piston reseals the bottom chamber on the piston bearing bush therefore halting the exhaust air and making a chamber of higher strain air underneath the piston which forces the piston again up the hammer.
4. EPT the hammer of the base of the gap allows the percussion bit to slide down the EPT sub also making it possible for the piston to slide down the hammer and rest on the piston bearing bush. The piston strike encounter and the strike confront of the percussion little bit can now not occur into make contact with hence making it possible for the totally free stream of higher force air right through the hammer without having the hammer cycling.
DTH Hammer Variety | EPTC45 | EPTC55 | EPTC65 | EPTC52 | RC542 | RC543 | RC545 | RC547 | |
Size (less little bit) | mm | 1571 | 1111 | 1250 | 1208 | 1191 | 1191 | 1261 | 1270 |
WeigEPTT (excXiHu (West EPT) Dis.Hu (West EPT) Dis. bit) | kg | 94 | sixty six.five | a hundred and ten | 70 | 57 | sixty two | sixty five | seventy one |
External diameter | mm | 99 | 126 | 146 | 126 | 109.5 | 116 | 117.5 | 124.five |
Bit shank | EPTC45 | EPTC55 | EPTC65 | PR52 | RE542 | RE542 | RE545 | RE547 | |
Hole assortment | mm | 114-127 | 133-152 | 155-190 | 133-146 | 113-130 | 120-one hundred thirty five | 122-135 | one hundred thirty-146 |
EPTion thread | on the thread of the drill tube | 3.five quot-four quot remet four quot metzke |
four quot-4.five quot remet four quot-4.5 quot metzke |
4.5 quot remet four.five quot metzke |
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doing work stress | Mpa | one.-three. | one.5-three.5 | one.5-3.5 | one.5-3.5 | 1.five-three.5 | one.five-three.five | 1.5-3.five | one.5-three.five |
EPTEPTTct charge at 1.seven Mpa | HZ | thirty | 35 | 28 | 35 | 35 | 35 | 35 | 35 |
EPTmmended Rotation Pace | r/min | twenty five-40 | twenty five-forty | twenty five-forty | 25-40 | twenty five-forty | twenty five-forty | 25-forty | twenty five-forty |
Air usage (m3/min | 1. Mpa | eight | 16 | twenty | sixteen | twelve | twelve | sixteen | sixteen |
1.8Mpa | 12 | 22 | 26 | 22 | 18 | 18 | 22 | 22 | |
two.4Mpa | sixteen | 28 | 35 | 28 | 26 | 26 | 28 | 28 |