Vacuum Annealing Furnace
This vacuum annealing furnace uses resistance wire radiation heating. The furnace chamber uses a 310S stainless steel liner, which has good oxidation resistance and high cleanliness. The insulation material uses ceramic fiber wool, which has good thermal insulation performance and high efficiency, and energy saving. It is suitable for metal annealing, ceramic sintering, vacuum smelting, electric vacuum parts degassing, annealing, brazing of metal parts, and ceramic-metal sealing.
| Furnace size (mm) | Maximum temperature (°C) | Vacuum degree | Power(KW) | Voltage | Heating elements |
| 300*200*200 | 1100°C | 6.67*10-4PA | 6 | 220/380V | Resistance wire |
| 400*300*300 | 12 | ||||
| 500*400*400 | 18 | ||||
| 600*400*400 | 24 |

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A 20-tonne Acheson graphitization furnace can hold full power for 24 to 40 hours and then need five to seven days of cooling before anyone opens it. Peak temperature is the headline number, but cost per tonne is decided by three quieter things: the furnace type, the condition of the insulation, and the shape of the power profile. Two shops running the same 2800 °C schedule can differ by 30 percent in kilowatt-hours per tonne. The gap is usually not the transformer. It is compressed graphite fel...




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