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Definition and common specification table of drill bit for coal mine
Release time:
2020-03-21
Author:
Source:
Diamond Composite Drill The main categories of diamond composite drill bits produced by our company are: diamond composite anchor drill bits, diamond composite coreless drill bits, diamond composite coring drill bits, diamond composite reaming drill bits, and diamond composite scraper drill bits.
The main categories of diamond composite drill bits produced by our company are: diamond composite anchor drill bit, diamond composite coreless drill bit, diamond composite coring drill bit, diamond composite reaming drill bit, diamond composite scraper bit.
|
Serial Number |
Specifications (mm) |
Drilling Procedure Parameters |
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|
|
WOB (Kg) |
Speed (rpm) |
Pump capacity (1/min) |
abrasion ratio（*10000） |
Impact resistance (J) |
adapted rock formation |
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|
|
|
|
|
|
|
|
Ordinary type |
Reinforced |
Super type |
|
1 |
Φ28 |
300-700 |
300-350 |
150-200 |
>80 |
>43 |
F6-F8 |
F8-F10 |
F10 above |
|
2 |
Φ30 |
300-700 |
300-350 |
150-200 |
>80 |
>43 |
F6-F8 |
F8-F10 |
F10 above |
|
3 |
Φ32 |
300-700 |
300-350 |
150-200 |
>80 |
>43 |
F6-F8 |
F8-F10 |
F10 above |
|
4 |
Φ48 |
300-700 |
300-350 |
120-160 |
>80 |
>43 |
F6-F8 |
F8-F10 |
F10 above |
|
5 |
Φ55 |
320-800 |
250-350 |
130-180 |
>100 |
>45 |
F8-F10 |
F10-F12 |
F12 above |
|
6 |
Φ65 |
480-1200 |
200-300 |
130-180 |
>100 |
>43 |
F8-F10 |
F10-F12 |
F12 above |
|
7 |
Φ75 |
480-1200 |
200-300 |
150-200 |
>100 |
>43 |
F8-F10 |
F10-F12 |
F12 above |
|
8 |
Φ94 |
640-1600 |
150-250 |
200-250 |
>100 |
>43 |
F8-F10 |
F10-F12 |
F12 above |
|
9 |
Φ113 |
880-2200 |
120-200 |
200-300 |
>120 |
>60 |
F8-F10 |
F10-F12 |
F12 above |
|
10 |
Φ133 |
1500-3000 |
100-200 |
500-850 |
>120 |
>60 |
F8-F10 |
F10-F12 |
F12 above |
|
11 |
Φ153 |
1500-3000 |
100-200 |
500-850 |
>120 |
>60 |
F8-F10 |
F10-F12 |
F12 above |
|
12 |
Φ173 |
1800-4000 |
100-200 |
600-1200 |
>120 |
>60 |
F8-F10 |
F10-F12 |
F12 above |
|
13 |
Φ193 |
1800-4000 |
100-200 |
600-1200 |
>120 |
>60 |
F8-F10 |
F10-F12 |
F12 above |
|
14 |
Φ250 |
2200-4500 |
100-200 |
750-1400 |
>120 |
>60 |
F8-F10 |
F10-F12 |
F12 above |
|
15 |
Φ300 |
2400-5000 |
100-200 |
1000-1500 |
>120 |
>60 |
F8-F10 |
F10-F12 |
F12 above |
Column bit, also known as button bit, combined with hydraulic rock drilling rig, is the best matching of modern rock drilling technology.
The most commonly used type of column tooth drill is [32 column tooth drill,40column tooth bit].
Taper connection drill tool column tooth drill bit 7 °,11°、12°
The advantages of column tooth drill bit: long service life, accurate positioning, coarse rock cuttings, low dust, durability, no need for grinding, etc., compared with traditional sheet drill bit, fast drilling speed, long passivation service life of button tooth drill bit, its non-grinding life is about 5-6 times of the grinding life of the same diameter blade drill bit, which is conducive to saving auxiliary working hours, reducing labor and physical strength of workers and speeding up the project speed.
The hardest part of the column tooth drill is the upper column head, which is made of wear-resistant alloy, and the lower shank barrel is cast steel. The following threads have inner threads and those without threads. When ordering mainly, the type of thread should be determined according to the thread of the customer's drill pipe.
Column tooth bits are mainly divided into the following categories:
1. DTH column tooth bit
The down-the-hole column tooth drill is a kind of drill bit used in conjunction with the down-the-hole impactor, and the drilling operation is carried out by the spline and the impactor.,Widely used in open pit mining,Quarry,hydropower engineering,Drilling of water wells, support of side columns, etc..It is divided:Low pressure down-the-hole column tooth bit,Medium and high wind pressure down-the-hole column tooth bit.DTH Tooth Drill Used with DTH Impactor,With drilling straight,fast speed,Characteristics of drilling depth.
2. Taper connection column tooth bit
The taper connection column tooth bit is mainly a kind of bit used in conjunction with the pneumatic rock drill and the taper rod, which is connected with the drill rod through the taper.,Drilling,It is mainly used in the secondary crushing of mines, bolt support, roadway excavation and other fields.
3. Threaded connection column tooth bit
Threaded connection column teeth are mainly used with hydraulic rock drills (or pneumatic rock drills)and hydraulic drill rod(Air-moving drill rod)A Kind of Drill Bit Used in Matching,Through different forms of thread and drill rod,Drilling,The drill bit is directly supplied32-￠203mm.
|
Diameter/Dia |
Alloy/Tip size(mm) |
Number of water holesNO.of flushing holes |
Weight Weight (kg) |
|||
|
mm |
Inch |
Gauge |
Front |
Side |
Front |
|
|
32 |
1 1/4 |
1 × 8 |
3 × 8 |
1 |
1 |
0.24 |
|
33 |
1 19/64 |
2 x 7 |
5 x 7 |
2 |
1 |
0.26 |
|
34 |
1 11/32 |
2 x 7 |
4 × 7 |
1 |
1 |
0.29 |
|
35 |
1 3/8 |
2 x 7 |
5 × 8 |
1 |
1 |
0.33 |
|
36 |
1 27/64 |
1 × 8 |
3 × 9 |
1 |
1 |
0.37 |
|
36 |
1 27/64 |
2 x 7 |
5 × 8 |
1 |
1 |
0.37 |
|
38 |
1 1/2 |
1 × 8 |
3 × 9 |
1 |
1 |
0.38 |
|
38 |
1 1/2 |
2 x 7 |
5 × 8 |
1 |
1 |
0.38 |
|
38 |
1 1/2 |
2 x 7 |
5 × 9 |
2 |
1 |
0.38 |
|
40 |
1 37/64 |
1 × 8 |
3 × 9 |
1 |
1 |
0.40 |
|
40 |
1 37/64 |
1 × 9 |
3 × 10 |
1 |
1 |
0.40 |
|
40 |
1 37/64 |
1 × 9 |
3 × 9 |
1 |
1 |
0.40 |
|
42 |
1 21/32 |
1 × 8 |
3 × 9 |
1 |
1 |
0.43 |
|
42 |
1 37/64 |
2 x 8 |
5 × 9 |
1 |
1 |
0.43 |
My company's production of coal and rock type carbide drill, variety complete. The drill bit body adopts various production and processing technologies such as precision casting, precision forging and medium carbon alloy steel cutting, etc., to meet the needs of different drill types and different drilling operation conditions. This product is widely used in coal mines, gypsum mines and other soft rock drilling, reaming operations.
|
Serial Number№ |
Specifications and modelsSpecifications and size(mm) |
Wing formCutters |
StructureStructures |
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|
|
Diameter/Dia |
regular connection dimensions/Connecting size |
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|
||
|
1 |
F27 |
M12/Φ8 |
M14 ×1.5 |
2 |
Integral |
|
|
2 |
F28 |
M12/Φ8 |
F12 ×12 |
2 |
Integral |
|
|
3 |
F30 |
M12/Φ8 |
F12 ×12 |
2 |
Integral |
|
|
4 |
F32 |
M14 ×1.5/Φ8 |
F12 ×12 |
2 |
Integral |
|
|
5 |
F34 |
M14 ×1.5/Φ8 |
F12 ×12 |
2 |
Integral |
|
|
6 |
F36 |
M14 ×1.5/Φ8 |
F12 ×12 |
2 |
Integral |
|
|
7 |
F38 |
T24 ×5/Φ12 |
F14×14 |
2－3 |
Integral |
|
|
8 |
F42 |
T24 ×5/Φ12 |
F13－14 |
2－3 |
Integral |
|
|
9 |
F45 |
T24 ×5/Φ12 |
F13－18 |
2－3 |
Integral |
|
|
10 |
F55 |
T24 ×5/Φ12 |
F13－18 |
4 |
Two-stage |
|
|
11 |
Φ65 |
T24 ×5 |
F13－18 |
4－5 |
Two-stage |
|
|
12 |
Φ75 |
T33 ×4.23 |
F13－18 |
4－5 |
Two-stage |
|
|
13 |
Φ76 |
T33 ×4.23 |
F18－24 |
4－5 |
Two-stage |
|
|
14 |
Φ82 |
T42 ×5.08 |
F18－24 |
4－5 |
Two-stage |
|
|
15 |
Φ85 |
T42 ×5.08 |
F18－24 |
4－5 |
Two-stage |
|
|
16 |
Φ89 |
T42 ×5.08 |
F24－32 |
5-7 |
Three-stage |
|
|
17 |
Φ95 |
T55 ×5.08 |
F24－32 |
5-7 |
Three-stage |
|
|
18 |
Φ110 |
T55 ×5.08 |
B35－45 |
5-7 |
Three-stage |
|
|
19 |
Φ125 |
T55 ×5.08 |
B35－45 |
5-12 |
Four-stage |
|
|
20 |
Φ135 |
T55 ×5.08 |
B35－45 |
5-12 |
Four-stage |
|
Key words:
Commonly used, drill bit, f12,f8-f10, above, 12,f10-f12,integral,43,120
