1. Application
The bogie hearth furnace is mainly used for heat treatment of metal parts.
2. Main Technical Parameters
| No. | Item | Technical Parameters |
| 1 | Rated power | 180kW+5% (1-100%) adjustable |
| 2 | Power supply | 380V,3P,50Hz |
| 3 | Rated temperature | 1150℃ |
| 4 | Empty furnace temperature rising speed | ≤2.5h to receive 950℃ |
| 5 | Control zone | 2 zones for temperature and 2 other points for measuring the temperature, 4 thermal couples in total |
| 6 | Effective working size | 1500×1500×1500mm (L,W,H) |
| 7 | Heating element connection | Ｙ |
| 8 | Temperature uniformity | ±10℃ |
| 9 | Instrument control accuracy | ±2℃ |
| 10 | Empty furnace power consumption | ≤18% |
| 11 | Temperature control method | SCR, PID regulator, Shimaden temperature controller, over-temperature alarm |
| 12 | furnace surface temperature rise | ＜45℃+ room temperature |
| 13 | Heating element material | 0Cr27AL7Mo2 (strip) 5-wall heating |
| 14 | Bogie face plate | Cr25Ni20 |
| 15 | Loading method | Product loaded on the bogie, and then bogie moves into the furnace |
| 16 | Furnace lining | High temperature refractory fiber structure |
| 17 | Furnace door opening method | Electrical up-down, spring compression sealing structure |
| 18 | Bogie in/out method | 2.2KW cycloidal pin wheel reducer |
3. Structural Introduction
The bogie hearth furnace is mainly comprised of furnace body, lining, furnace door and door up-down system, bogie,
heating element, and temperature control system.
3.1 furnace body
The furnace body steel structure of the bogie hearth furnace is made from 10-12mm sectional steel and 4mm steel plates.
The side pillar and back pillars are made from sectional steel, and are reinforced with sectional steel bracings. The external
wall of the furnace is painted with 2 layers of primers, and 2 layers of coating paint. The key part of the car bottom furnace is
painted with heat resistant paint.
3.2 lining
The lining material used is quality high aluminum fibers fixed by round steel parts. The aluminum fibers are pre-compressed
into blocks (compression gravity: ≥230Kg/m3 ) and then fixed to the furnace body by stainless steel parts. This refractory lining
structure has the advantages of low heat conductivity, strong anti-shock capacity, and anti-erosion. The lining layer total thickness
is 350mm.
The silicate aluminum fiber resists a maximum temperature of 1250℃. The round steel fixation parts are made of 304 material.
Picture of Refractory Lining and Heating Elements for Electric Bogie Hearth Furnace
