A. Composition of a single set of induction melting furnace :
1 , 12- pulse intermediate frequency rectifier cabinet ( including rectifier filter capacitor)
2 , inverter cabinet ( series resonant inverter including a compensation capacitor )
3. Melting furnace body ( 3 ton steel shell)
4 , the hydraulic system
5 , Front console
6 , between the cabinet and the inverter rectifier cabinet copper bar
7 ,water-cooled cables
8 , crucible mold
9 , water distributor
10. Leakage alarm device
11 , the water channel between the power supply and the furnace body
12 、Fast ejection mechanism of furnace lining
B , induction melting furnace technical parameters
Serial number | project | parameter | unit | Note |
1 | Power rated power | 2000 | Kw | Can be smelted and insulated |
2 | Maximum unidirectional power | 20 00 | Kw | Single power supply |
3 | Power input voltage | 950 | V | Must be 950v or the current consumes a lot of energy |
4 | Rectifier form | 12 Pulse | Must be 12 pulses or 6 pulses with large noise and large energy consumption | |
5 | Grid-side power factor | > 0.9 6 | At any power | |
6 | Inverter form | Thyristors in series | Dual-powered 12- pulse IF power supply | |
7 | Inverter output frequency | 300- 400 | Hz | |
8 | Startup success rate | 100% | in any circumstances | |
9 | Power conversion efficiency | 0.97 | ||
10 | Power consumption | 5 0 0 ± 5% | Kwh / t | Melt from hot normal temperature to 1450 ℃ |
Serial number | project | parameter | unit | Note |
1 | Single furnace body rated capacity | 3 | t | |
2 | Maximum capacity of a single furnace | 3.8 | t | |
3 | Rated working temperature | 1 80 0 | ℃ | |
4 | Furnace lining thickness | 110 | mm | |
5 | Smelting material | Cast iron, cast steel | From room temperature to the hot melt . 1 80 0 deg.] C |
C , induction melting furnace adopts 12 -pulse rectifier in series dual power frequency furnace Introduction
Circuit uses 12 -pulse rectifier, using the line voltage 950 V . The inverter uses a half-bridge inverter. This frequency power supply circuit is suitable for large capacity power 2000 KW_—100000KW of induction melting furnace.Its circuit diagram is as follows:
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