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2019 the most complete intermediate frequency furnace commonly used parameter calculation method
Many people are asking how to calculate frequency furnace power, frequency, how to count, incoming and outgoing to choose more than rough and so on, which are involved in the calculation of intermediate frequency furnace, electric furnace today small pine guide you summarize finishing 2019 the most comprehensive The intermediate frequency furnace commonly used parameter calculation method, I believe it will help you.
1. Intermediate frequency furnace power calculation method
The power of the intermediate frequency furnace is divided into three categories: medium frequency heating furnace power, medium frequency furnace quenching power and medium frequency furnace melting power. The calculation method is as follows:
Medium frequency heating furnace power calculation:
P= ( C × T × G )÷( 0.24 × S ×η)
Intermediate frequency furnace notes:
P = equipment power ( KW )
C= material specific heat ( kcal/kg °C)
G = workpiece weight ( kg )
T = heating temperature, Heating (°C)
t= time ( S )
η = comprehensive thermal efficiency of the equipment, generally 0.5  0.7 , and 0.4 of the shaped parts .
For example, a forging factory has a forging blank of Φ 60 × 150 mm , a working cycle of 12 seconds / piece (including auxiliary time), and an initial forging temperature of 1200 °C.
Calculated as follows: P = ( 0.17 × 3.3 × 1200 ) / ( 0.24 × 12 × 0.65 ) = 359.61KW
According to the above calculation, an intermediate frequency induction furnace with a rated power of 400 KW can be configured .
According to the basic principle of electromagnetic induction, the threephase power frequency alternating current is rectified into a direct current, and then the direct current is converted into an adjustable intermediate frequency current, and a load composed of a capacitor and an induction coil is supplied (the coil and the capacitor can be connected in parallel or in series). A highdensity magnetic line is generated in the induction coil, and the metal material contained in the induction coil is cut to generate a large eddy current in the metal material. This eddy current also has some properties of the intermediate frequency current, that is, the free electrons of the metal itself flow in the metal body with resistance to generate heat.
Medium frequency furnace quenching power calculation:
P= ( 1.5 — 2.5 )× S
S= hardening area of the workpiece (square centimeter)
Intermediate frequency furnace smelting power calculation:
P=T/2
T = electric furnace capacity ( T )
2. Intermediate frequency electric furnace frequency calculation
δ = 4500/d2
4500= coefficient
d = workpiece radius
The above is the calculation method of the intermediate frequency furnace power. I believe that you have already learned how to calculate the power of the intermediate frequency furnace. However, in the actual application process, you will find that the intermediate frequency furnace accessories are in good condition, but the power is not going up. Timely adjustment of the power of the intermediate frequency furnace is fine. For the method of adjusting the power of the intermediate frequency furnace, please pay attention to how to adjust the power of the intermediate frequency furnace .
3. Selection of the capacity of the rectifier transformer of the intermediate frequency induction furnace
Electric furnace power ( kW ) 
Transformer capacity ( kVA ) 
50 
100 
100 
160 
200 
250 
250 
315 
350 
400 
500 
630 
750 
100 0 
······· 

4. Selection of the inlet section of the intermediate frequency furnace
Power supply ( kW ) 
Copper core cable ( mm2 ) 
Aluminum core cable ( mm2 ) 
50 
25 
35 
100 
50 
75 
200 
95 
150 
250 
2*70 
2*120 
350 
2*95 
2*185 
500 
3*95 
3*185 
750 
4*95 
4*185 
1000 
5*95 
5*185 
5. Selection of cross section of output cable of medium frequency electric furnace
Output frequency ( KHZ ) Power ( kW ) 
0.5 
1.0 
2.5 
4.0 
8.0 
50 
35 
50/90 
70 
95 
120 
100 
50 
70 
95 
2*70 
2*95 
200 
95 
2*70 
2*95 
4*70 
4*95 
250 
2*70 
2*95 
3*70 
5*90 
5*95 
350 
2*95 
3*95 
4*95 
5*100 
5*100 
500 
3*95 
4*95 
5*100 
5*150 
5*200 
750 
4*95 
5*100 
5*150 
5*200 
( 5*150 ) *3 
1000 
5*100 
5*150 
5*200 
( 5*150 ) *2 
( 5*150 ) *4 
6. Selection of cooling water flow
6.1 Intermediate frequency furnace inlet pressure: 0.15 ~ 0.3Mpa
6.2 cooling water temperature at 5 ~ 30 within the range °, water hardness does not exceed . 8 degrees, turbidity is not greater than 5 , the PH value of 6.5  . 8 range.
6.3 The following are the requirements of the traffic
Power supply ( kW ) 
Heating power supply (including capacitors) 
Diathermy 
Quenching 
Melting 
50 
4 
4 
4 
5 
100 
4 
4 
4 
8 
200 
5 
6 
6 
12 
250 
6 
7 
8 
14 
350 
7 
12 
12 
18 
500 
10 
15 
15 
twenty four 
750 
18 
25 
25 
40 
Note: The fullfrequency circulatory cooling system is recommended for medium frequency furnaces.
The above is the calculation method of the commonly used parameters of the intermediate frequency furnace summarized by the pine guide intermediate frequency furnace, so that you can choose the right intermediate frequency furnace to save your cost.