Product Description
Extremely soft coal seams usually refer to coal seams with a Proctor hardness below 10 MPa, high porosity, high water content, loose and fragile structure,; These high moisture coal seams often mixed with abrasive gangue such as pyrite and quartz. During mining, fine coal shavings are easily generated, leading to phenomena such as "drilling paste" and "mud inclusion" in drilling resistance, chip blockage, and drill bit failure. The working conditions are complex and the safety risks are high. DQ DIAMOND has launched a mirror PDC CUTTER for the mining of extremely soft coal seams
Core Advantages of DQ DIAMOND Mirror PDC CUTTER
1. Superior Anti-adhesion and Enhanced Chip Removal: The mirror polished surface roughness is as low as Ra0.02 or below, The mirror polished PDC cutter can significantly reduce the physical biting force between coal chips and drill bits. The coal slurry is smoothly discharged like an "ice skate", reducing the risk of "stuck drilling" by more than 30%, ensuring that the cutting edge remains sharp and maintaining efficient drilling.
2. Reduced Friction and Thermal Stability: The polished surface reduces the friction coefficient, reduces the accumulation of cutting heat, avoids coal slurry coking due to high temperature, prolongs the continuous operation time of the drill bit, and protects the chemical stability of the PDC cutter.
3. Enhance wear resistance and impact resistance: Polishing technology eliminates defects such as micro cracks and dents on the cutting edge, improves impact resistance, reduces abrasive particles' abrasion on the blade body, prolongs the service life by about 40%, and increases drilling efficiency by more than 20%.
Mirror PDC CUTTER adaptation scene
Suitable for extremely soft coal seams with high moisture content, easy collapse of holes, and high abrasive inclusions, effectively solving pain points such as difficulty in chip removal and short drill bit life, and improving mining safety and economy.
Hot Tags: mirror pdc cutter for extremely soft coal seams, China mirror pdc cutter for extremely soft coal seams manufacturers, factory
Product Specifications
|
Product No. |
Diameter (mm) |
Height (mm) |
Diamond thickness/mm |
Diamond Chamfer/mm |
TC Chamfer/mm |
|
0808 |
8.0±0.03 |
8.0±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
0813 |
8.0±0.03 |
13.2±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1008 |
10.00±0.03 |
8.0±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1013 |
10.00±0.03 |
13.2±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1308 |
13.44±0.03 |
8.0±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1313 |
13.44±0.03 |
13.2±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1320 |
13.44±0.03 |
20.0±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1613 |
15.88±0.03 |
13.20±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1616 |
15.88±0.03 |
16.31±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1913 |
19.05±0.03 |
13.20±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1916 |
19.05±0.03 |
16.31±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
|
1919 |
19.05±0.03 |
19.00±0.05 |
3.0±0.2 |
0.40±0.05 |
0.76±0.05 |
PDC Diamond Cutter Showing
FAQ
Q1: Why is "drilling paste" or "bit balling" so common in extremely soft coal seams?
A: A: Extremely soft coal () with high moisture creates fine, sticky shavings. Standard PDC cutters have microscopic surface textures that "trap" these particles, leading to mud inclusion and chip blockage. Our Mirror PDC CUTTER solves this by reducing the physical biting force, allowing coal slurry to slide off effortlessly.
Q2: How does the Ra0.02 surface roughness benefit my drilling operations?
A: A: A surface roughness of Ra0.02 or below creates a "mirror effect." This ultra-smooth finish acts like an "ice skate" for coal chips, reducing the friction coefficient significantly. In field applications, this technology reduces the risk of stuck drilling by over 30% and ensures the cutting edge stays sharp longer.
Q3: Can a polished PDC cutter really prevent thermal degradation in wet coal?
A: A: Yes. In high-porosity coal seams, friction generates intense localized heat which can cause coal slurry to "coke" or bake onto the cutter. The DQ DIAMOND Mirror PDC reduces friction-induced heat accumulation, maintaining the thermal stability and chemical integrity of the diamond layer even during continuous, high-speed operation.
Q4: Does the polishing process make the PDC cutter more fragile?
A: A: On the contrary, it makes it tougher. Our polishing technology eliminates micro-cracks and surface dents that are often left behind during standard manufacturing. By removing these "stress risers," we improve the impact resistance and prolong the service life by approximately 40% compared to non-polished cutters.
Q5: Which specific mining conditions are best suited for Mirror PDC CUTTERS?
A: A: They are specifically engineered for complex geological strata characterized by high water content, easy hole collapse, and abrasive inclusions like pyrite. If you are struggling with short bit life and frequent pulling for cleaning due to chip blockage, the Mirror PDC is the most economic and high-performance choice.
