- 18
- Sep
How to choose the current frequency when the induction heating furnace heats the steel pipe ?
How to choose the current frequency when the induction heating furnace heats the steel pipe ?
Induction heating furnace heating La tubería de acero es generalmente a través del calor, por lo tanto, al seleccionar la frecuencia, la corriente de estado caliente D calor debe ser mayor que el espesor de la pared de la tubería.
Table 2 – . 8 shows the solenoid induction heating steel pipe and steel optimal frequency, and Table 2.9 lists (above the Curie point) heating the steel pipe wall thickness to obtain the best highest efficiency when various frequencies.
Table 2-8 The best frequency when the spiral tube inductor heats the steel pipe and the steel pipe
Diámetro exterior del tubo / mm | Wall thickness/ mm | Best frequency /kHz | ||
20 ℃ | 800 ℃ | 1200 ℃ | ||
Non-magnetic steel | ||||
12. 7 | 1 | 51 | 85 | 92 |
2 | 28 | 47 | 50 | |
3 | veinte uno | 34 | 37 | |
25.4 | 1 | 25 | 41 | 44 |
2 | 13 | 21 | 23 | |
3 | 8.9 | 15 | 16 | |
5 | 5.9 | 9. 8 | 11 | |
50. The 8 | 1 | 12 | 20 | 22 |
2 | 6. 1 | 10. 1 | 11 | |
3 | 4.2 | 6.9 | 7.5 | |
5 | 2.6 | 4. 3 | 4.7 | |
76.2 | 1 | 7.9 | 13.2 | 14.3 |
2 | 4 | 6.7 | 7.2 | |
3 | 2.7 | 4.5 | 4.9 | |
5 | 1.7 | 2. 8 | 3 | |
102 | 1 | 5.9 | 9.9 | 10.6 |
2 | 3 | 5 | 5.4 | |
3 | 2 | 3.4 | 3.6 | |
5 | 1.2 | 2. 1 | 2.2 | |
12.7 | 1.33 | 3.7 | 6. 3 | |
0. 73 | 2 | 3.4 | ||
0. 54 | 1.5 | 2.5 |
Tabla 2-9 El mejor espesor de pared para el calentamiento de tuberías de acero para obtener la mayor eficiencia en varias frecuencias (cuando es más alto que el punto de Curie)
Frecuencia / Hz | Diámetro / mm | |||||||||
5 | 10 | 20 | 50 | 100 | 200 | 300 | 500 | 10000 | 20000 | |
50 | 25 | 15 | 7 | 3 | ||||||
150 | 25 | 10 | 5 | 2.1 | 1 | |||||
500 | 20 | 5 | 2.5 | 1.5 | 0.75 | 0.3 | ||||
1000 | 10 | 4 | 1.3 | 0.7 | 0.4 | 0. 15 | ||||
2400 | 10 | 3 | 1.5 | 0.6 | 0. 3 | 0. 13 | ||||
4000 | 5 | 2 | 0.8 | 0.3 | 0. 18 | 0. 07 | ||||
10000 | 5 | 1.8 | 0.7 | 0. 35 | 0. 13 | 0. 08 | ||||
70000 | 2 | 0.6 | 0.21 | 0. 11 | ||||||
440000 | 0.6 | 0.2 | 0. 09 |