Hunan Jetvision Industrial CO.,LTD
Customised Cemented Carbide Components Producer And Exporter
Customised Cemented Carbide Components Producer And Exporter
HPGR is an energy-efficient crushing equipment used to reduce particles by compressing and crushing the feed between two counter rotating, parallel rollers with a small gap between them. This forces the rocks against each other and compresses the feed’s density to 80% of its solid volume, exceeding its compressive strength with equal pressure being applied to particles of all sizes. HPGR is widely used in grinding cement clinker, limestone, bauxite, iron ore..
There are 3 main types of core components of the HPGR: PTA layer roller surface, centrifugal casting composite roller surface, stud roller surface. The disadvantage for first two types is that the roller surface will be subjected to severe impact due to the direct contact of the roller with the material under the action of strong extrusion force (generally 50-300MPa) The abrasive grains and furrows wear, and at the same time, the roller surface will produce squeeze pits. These accumulated pits will cause the fatigue wear of the roller surface material, which seriously affects the normal operation of the equipment.
For stud roller surface, the base body is made of high-strength alloy steel, which has high hardness after quenching and tempering. The wear-resistant layer is made of tungsten-cobalt hard alloy studs and inlaid on the body. Generally up to HRC67 or higher, the hardness is much higher than that of the PTA layer roller surface and the centrifugal casting composite roll surface, and the matrix of the stud roller surface can be well protected by the material lining formed. Tungsten carbide studs roller has a service life more than 6 times longer than that of the surfacing roller surface. Energy saving and environmental protection, maintenance-free, high work efficiency, lowlabor.
or.
Grades below are exclusive grades we developed for HPGR.
Good wear resistance and high strength are suitable for metal smashing with
high working efficiency. Lifetime of carbide stud is over 8000-10000 hrs for
iron ore and 25000hrs for cement.
|
No. |
Grade |
Content |
Grain Size |
Density (g/cm3) |
Hardness (HRA) |
T.R.S |
Properties & Applications |
|
|
WC |
Co |
|||||||
|
1 |
YG6 |
94% |
6% |
Medium |
14.90-15.00 |
90.5 |
2800 |
Can be used for making compacts of various percussion.DTH bits and tricone bits for drilling medium hard formation. |
|
2 |
YG8 |
92% |
8% |
Medium |
14.65-14.80 |
89.5 |
3000 |
Can be used for making compacts of various percussion.DTH bits and tricone bits for drilling medium hard formation. |
|
3 |
YG9 |
91% |
9% |
Medium |
14.55-14.70 |
88.8 |
2800 |
Can be used in mining applications where moderate toughness is required.Main application include compacts of tricone rocks bits for oil and gas drilling. |
|
4 |
YG9C |
91% |
9% |
Coarse |
14.55-14.70 |
87.5 |
2800 |
Can be used for bits of mining and tunneling.It has excellent toughtness and thermal fatigue property. |
|
5 |
YG10 |
90% |
10% |
Medium |
14.45-14.60 |
88.3 |
2800 |
Can be used in mining applications where moderate toughness is required.Main application include compacts of tricone rocks bits for oil and gas drilling. |
|
6 |
YG10C |
90% |
10% |
Coarse |
14.40-14.60 |
87.5 |
3000 |
Can be used for bits of mining and tunneling. It has excellent toughtness andthermal fatigue property. |
|
7 |
YG11 |
89% |
11% |
Medium |
14.35-14.50 |
88.0 |
2800 |
Can be used in mining applications where moderate toughness is required.Main application include compacts of tricone rocks bits for oil and gas drilling. |
|
8 |
YG11C |
89% |
11% |
Coarse |
14.35-14.50 |
86.8 |
2850 |
Can be used for bits and shield cutter of mining and tunneling. It has excellent toughness and thermal fatigue property. |
|
9 |
YG15 |
85% |
15% |
Medium |
14.00-14.20 |
86.5 |
3000 |
Especially suitable for HPGR. |
Other grades can be offered according to customers’ requirement.
Usual Types and Dimensions of Tungsten Carbide Studs
|
H(mm) |
Ø (mm) |
Approx Weight (g) |
|
50 |
16 |
137 |
|
45 |
18 |
156 |
|
40 |
20 |
172 |
|
40 |
16 |
108 |
|
35 |
20 |
150 |
|
H(mm) |
∅1(mm) |
∅2(mm) |
∅3(mm) |
|
70 |
21.9 |
11.5 |
5 |
|
60 |
16.5 |
7.5 |
5 |
|
50 |
21.9 |
11.5 |
5 |
|
40 |
15.9 |
7.3 |
5 |
|
35 |
21.9 |
11.5 |
5 |
|
H(mm) |
ø(mm) |
SR(mm) |
E X R(mm) |
|
40 |
20 |
SR8 |
2xR5.0 |
|
30 |
20 |
SR8 |
2xR5.0 |
|
35 |
20 |
SR8 |
2xR5.0 |
|
55 |
16 |
SR8 |
R2.0 |
|
50 |
16 |
SR8 |
R2.0 |
|
45 |
16 |
SR8 |
2xR5.0 |
|
40 |
16 |
SR8 |
2xR5.0 |
|
40 |
16 |
SR8 |
1xR2.0 |
|
40 |
16 |
SR8 |
1X45° |
|
35 |
16 |
SR8 |
R2.0 |
|
20.5 |
16 |
SR8 |
R2.0 |
|
22 |
10 |
SR5 |
R1.0 |
|
22 |
10 |
SR5 |
R1.5 |
|
20 |
10 |
SR5 |
R1.5 |
|
20 |
8 |
SR4 |
R1.0 |
|
10 |
5 |
SR2.5 |
R1.0 |
