Chromium Carbide Overlay Pipe
Product Description
Wear Resistant Steel Pipe CCO Wear Pipe
HART Hardfacing Overlay Pipe is manufactured by depositing chromium-rich, abrasion-resistant materials on the mild seamless pipe or welding pipes, using a traditional arc welding process. The wear pipe is available with double or multiple overlay passes. And it can be fabricated as square-to-round transitions, elbows, T or Y- shaped.
The CCO pipe is designed with extreme wear capabilities for working in many applications: mining, cement, oil sands, dredging, recycling and steel production industries.With either a circumferential or longitudinal weld deposition.
Our company provide chromium carbide clad pipe are ideal for combatting abrasion either as gravitational feed pipes or as part of a pneumatic transfer system.
[Technical Specification Of HART-PP-100 ]
1.Outer Diameter: 80-2000mm
2. Hardfacing Layer: Chromium carbon alloy on Fe basis(austenite)
Bulk hardness: >630HV
Mean hardness: >55HRC
Layer thickness: 3 to 30 mm
3. Welding Processes: Advanced welding with internally or externally clad chromium carbide overlay.
4. Alloy Description: Austenitic chrome carbide iron(Chromium white iron)
5. Carbide Hardness: >1750HV
6. Volume Fraction of Carbide: >30%
7. Chemical Composition:
Carbon: 3-6%
Chromium: 18-34%
*Various alloys to be used depend on different operating condition and applications.
| Thick | C% | Cr% | Mn% | Si% | HRC | |
| 3 on 3 | 3~4 | 18~20 | 0.5~1 | 0.5~1 | 56~58 | |
| 3 on 4 | 3~4 | 18~20 | 0.5~1 | 0.5~1 | 56~58 | |
| 3 on 5 | 3~4 | 18~22 | 0.5~1 | 0.5~1 | 58~60 | |
| 3 on N | 3.5~4.5 | 20~25 | 0.5~1 | 0.5~1 | 58~62 | N>5 |
| 4 on N | 3.5~4.5 | 20~25 | 0.5~1 | 0.5~1 | 58~62 | |
| 5 on N | 4~6 | 23~25 | 0.5~1 | 0.5~1 | 58~62 | |
| 6 on N | 4~6 | 24~28 | 0.5~1 | 0.5~1 | 58~62 | |
| 7 on N | 4.5~6 | 24~28 | 0.5~1 | 0.5~1 | 58~62 | |
| 8 on N | 4.5~6 | 24~28 | 0.5~1.5 | 0.5~1 | 58~62 | |
| 9 on N | 5~6 | 26~30 | 0.5~1.5 | 0.5~1 | 60~64 | |
| 10 on N | 5~6 | 26~30 | 0.5~1.5 | 0.5~1 | 60~64 | |
| 11 on N | 5~6 | 26~30 | 0.5~1.5 | 0.5~1 | 60~64 | |
| 12 on N | 5~6 | 26~34 | 0.5~1.5 | 0.5~1 | 60~64 | |
| N on N | 5~6 | 26~34 | 0.5~2 | 0.5~1 | 60~64 | N>12 |
8. Microstructure:
Composed of a high proportion of extremely hard primary M7C3 chromium rich carbides dispersed in a ductile eutectic austenite matrix.
Maintains 30% to 50% of primary carbides to provide a good wear resistance and homogenous bonding.
9. Typical Applications:
HART-PP-100 Pipe is widely used in the mining, power generation(Coal), cement, dredging, steel production, waste handling, glass production, and pulp and paper industries. Some specific applications include:
| INDUSTRY | APPLICATONS |
| Mining | Slurry pumps, chutes |
| Cement | Slurry pumps, chutes |
| Dredging | Dredging pipes and pumps, suction pipelines, pump discharges |
| Steel | Suction pipelines, pump discharges, air ducts, carbon injection pipes, suction lines, troughs |
| Recycling | Cullet glass |
10. Wear properties of HART-PP-100 (ASTM G65 and SGS test report)
*ASTM G65 is a standard test measuring sliding abrasion resistance using a dry sand/rubber wheel apparatus.
| HARDBANDING ALLOY | ASTM G65 -- WEIGHT LOSS | HARDNESS (RC) |
| 10+10-8 | 0.162 g/6000 revs | 64.7 |
| 10+10-4 | 0.183 g/6000 revs | 63.7 |
| 10+10-2 | 0.149 g/6000 revs | 64.0 |