1.Carbide Button Shape Selection
Domed/round buttons are usually used as gauge buttons of DTH bits, suitable for very abrasive and very hard formations.
Ballistic buttons are usually used as front buttons of dth bits, suitable for medium abrasive andmedium hard formations. They can also be used as gauge buttons if the rock is soft.
2.Main Characteristics of the Bit Face
Flat Face: This flat face is suitable for drilling very hard rock formations andcorrosive wall formations at high air pressures. When the bits is drilling.the faster the drilling speed, the less wear of the drill body.
Convex Face: This Convex face is suitable for low- to medium-pressure drilling of soft-medium hard rock formations, and the drill block is not easy to corrode.The characteristics of this design are the low load of the side button, the wear is not badly and the drilling speed is fast.
Concave Face: This Concave face is suitable for all rock formations, especially in medium-hard and homogeneous rock formations, the effect is good.The blast hole deviation is small, and the slag discharge effect is good.
Double Gauge Face: This double-sided button face is suitable for drilling very hard rock formations at high air pressures. When the bits is drilling, drilling speed is fast, the bit body wear will also be less.
|
Specificction
|
Head Shape
|
Head Dia.(mm)
|
Shank Length
|
Spline
|
Port Holes
|
Button Type
|
Gauge Buttons
|
Front Buttons
|
Weight(KG)
|
|
CIR65
|
Flat Face |
65
|
105
|
4
|
2
|
Spherical
|
4*Φ12
|
2*Φ12 |
1.5
|
|
Flat Face |
68
|
105
|
4
|
2
|
Spherical
|
4*Φ12
|
2*Φ12
|
1.6
|
|
|
CIR70
|
Flat Face |
76
|
111 |
4
|
2
|
Spherical
|
6*Φ12
|
4*Φ11
|
2
|
|
Convex Face
|
85
|
111
|
4
|
2
|
Spherical
|
6*Φ13 | 2*Φ12+2*Φ11 | 2.3 | |
|
CIR90
|
Convex Face
|
90
|
130
|
6
|
2
|
Spherical
|
6*Φ14
|
2*Φ13+2*Φ12
|
3.75
|
|
Concave Face
|
110
|
130
|
6
|
2
|
Ballistic
|
6*Φ14
|
6*Φ13
|
4.8
|
|
|
CIR110
|
Concave Face
|
110
|
140
|
6
|
2
|
Ballistic
|
6*Φ14
|
6*Φ13
|
6.2
|
|
Concave Face
|
130
|
140
|
6
|
2
|
Ballistic
|
8*Φ14
|
4*Φ14+3*Φ13
|
8.05
|
|
|
Flat Face
|
140
|
140
|
6
|
2
|
Ballistic
|
8*Φ14
|
8*Φ14
|
9
|
|
|
CIR150
|
Convex Face
|
155
|
170
|
6 |
3
|
Ballistic
|
9*Φ16
|
10*Φ14
|
16.7
|
|
Convex Face
|
165
|
170
|
6
|
3
|
Ballistic
|
9*Φ16
|
10*Φ14
|
17.55
|
|
|
Convex Face
|
178
|
170
|
6
|
3
|
Ballistic
|
9*Φ16
|
6*Φ16+6*Φ14
|
18.85
|
|
|
CIR170
|
Convex Face
|
195
|
170
|
6
|
3
|
Ballistic
|
9*Φ16
|
6*Φ16+8*Φ14
|
24.2 |
|
Convex Face
|
203
|
170
|
6
|
3
|
Ballistic
|
9*Φ16
|
6*Φ16+10*Φ14
|
26.35
|
|
|
N3
|
Convex Face
|
90
|
130
|
6
|
2
|
Ballistic
|
6*Φ14
|
2*Φ13+2*Φ12
|
3.55
|
|
Concave Face
|
110
|
130
|
6
|
2
|
Ballistic
|
6*Φ14
|
6*Φ13
|
4.6
|
|
|
N4
|
Concave Face
|
110
|
140
|
6
|
2
|
Ballistic
|
6*Φ14
|
16*Φ13
|
6
|
|
Concave Face
|
130
|
140
|
6
|
2
|
Ballistic
|
8*Φ14
|
4*Φ14+3*Φ13
|
7.85
|
|
|
Flat Face
|
140
|
140 | 6 |
2
|
Ballistic
|
8*Φ14
|
8*Φ14
|
8.8
|
