Flame Resistant Belt
Flame resistant belt is one of the critical part for flammable, explosive applications, especially for underground mining. It is not only related to operational safety, but also critical to the safety of workers.
Standard flame resistant belts in general use (Quality can be changed with customer requirements):
Physical values:
| Key physical values | Tensile strength (N/mm) | Elongation at break (%) | Abrasion (mm3) |
| Values | 14MPa | 350 | 200 |
Flame resistant values:
| Item | Values |
| Finger burning test with covers | ≤45s for all six testing pieces
≤15s for any individual piece |
| Anti-static | ≤ 3*10⁸ |
Flame resistant belts for underground applications:
Physical values:
| Key physical values | Tensile strength (N/mm) | Elongation at break (%) | Abrasion (mm3) |
| Values | 14MPa | 350 | 200 |
Flame resistant values:
| TESTING ITEM | SPECIFICATION | |
| EN 12881-1:2010 Conveyor Belts – Fire simulation flammability testing – Part 1: Propane burner tests | A length of test piece, not less than 250 mm shall remain undamaged over its full width after all visible flame and visible glow have disappeared | |
| (Gallery test) | ||
| Ignitability and maximum surface temperature of belting subjected to friction | The surface temperature of the drum shall not exceed 325°C, and there shall be no visible flaming or visible glowing | |
| (Drum friction test) | ||
| Electrical resistance | Average of two resistance measurements (both carrying and running side) shall not exceed 300 MΩ | |
| Ignitability and flame propagation characteristics, with spirit burner | According to Testing Standards | |
| (Finger burn test) | ||
| Chart A | ||
| With Cover | Average value with flame(s) for all samples ≤3S | |
| Maximum value with flame(s) for any individual sample ≤10S | ||
| Average value with glow(s) for all samples ≤3S | ||
| Maximum value with glow(s) for any individual sample ≤10S | ||
| Chart B | ||
| Without Cover | Average value with flame(s) for all samples ≤5S | |
| Maximum value with flame(s) for any individual sample ≤15S | ||
| Average value with glow(s) for all samples ≤5S | ||
| Maximum value with glow(s) for any individual sample ≤15S | ||
| Applicable standards | DIN-K/S | EN14973/12882 | MSHA | SANS-F | AS4606 | JIS-S |
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