HOMETECH☰
The Mesh belt bright annealing Furnace with protective atmosphere is mainly used for nickel-based alloy and austenitic stainless steel tubes, after annealing, the surface is uniformly bright without oxidation and oxidative stain.
Note: Before annealing, the inner and outer surfaces of the tubes of following materials must be cleaned by degreasing, and dried without any oxide. Then you can put the tubes into the annealing furnace.
Heat treatment steel grades: Ni-based alloys tube, 301 304 304L 316 316L 321
Heating element length: 0.6m - 8m
The annealing furnace is mainly consists of oven body, heat-resistant steel muffle, water cooling device, transporting device, electric control cabinet, ammonia decomposition and purification devices,gas distribution device, adjusting device, system, safety devices and other components.
| Item | Unit | NGL-90-11Q | Remark | |
| 1 | Power | KW | 90-120 | Adjustable (including preheating zone) |
| 2 | Rated voltage | V | 380 | |
| 3 | Working temp. | °C | 700~1080 | Continuously adjustable, controllable |
| 4 | Muffle cavity size | mm | 4600*320*150 | L*W*H |
| 5 | Oven size | mm | 18500*1860*1910 | L*W*H |
| 6 | Maximum height of oven mouth for feeding workpiece | mm | 120 | |
| 7 | Heating zones | 4 zones | (Including preheating zone) | |
| 8 | Width of mesh belt | mm | 300 | 314*300*39000mm |
| 9 | Speed of mesh belt | mm/min | 50~500 | online speed display |
| 10 | Heating element | Heating wire | ||
| 11 | Temperature uniformity of muffle section | °C | ±5 | |
| 12 | Temperature meter accuracy | ±1 | ||
| 13 | Cooling water consumption | m3/h | 0.1 | |
| 14 | Furnace atmosphere | Ammonia decomposition protective atmosphere | 75%H2+25%N2 | |
| 15 | Gas production of ammonia decomposition | m3/h | 30 | |
| 16 | Operation tem. of ammonia decomposition | °C | 800-850 | |
| 17 | Heating power of ammonia decomposition | KW | 36 | |
| 18 | Original gas | NH3(Ammonia First Grade） | ||
| 19 | Residual of ammonia gas | ppm | ≤ 4 | |
| 20 | Max. consumption of ammonia | kg/h | ≤ 12 |
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