Shandong Weiterui Industrial Technology Co., Ltd. is one of the leading manufacturers and suppliers of high frequency induction heater series in China. Welcome to buy high quality bearing heaters made in China here from our factory. Please be free to enjoy our discount price and good service.
High-frequency induction heater series
Principle of electromagnetic induction heating
Electromagnetic induction heating is based on the basic principle of electromagnetic induction, polarity instantaneous change of strong magnetic beam, such as metal heated material placed in the coil, magnetic beam will run through the whole heated material, inside the heated material and heating current in the opposite direction of large eddy current, due to the resistance of the heated material and joule heat, make the temperature of the material itself rises rapidly, using the workpiece vortex heat for heating. It has the advantages of high heating efficiency, fast speed and good controllability, and is easy to realize high temperature and local heating and high power induction heating device, which has been used as a switching device for many years. Due to the inability to self-off, low efficiency and poor load stability, the output voltage of the inverter appears intermittent oscillation during the light load operation, so it is imperative to use IGBT semiconductor devices instead of SCR devices in high power occasions. The induction heating device using IGBT semiconductor device has the advantages of high efficiency, fast heating of the workpiece, easy control, less oxidation and decarbonization, and reliable process quality.
2.IGBT Advantages of the power supply
2.1. IGBT Power supply is a new type of IGBT inverter module (insulated gate bipolar transistor, produced in Germany) is mainly used for smelting carbon steel, alloy steel, cast steel, non-ferrous metals. IGBT intermediate frequency power supply has the characteristics of fast heating speed, energy saving and environmental protection.
2.2.IGBT The frequency control system is used to adjust the frequency. The rectifier part includes the full bridge rectifier, sensor and capacitor filter, which works under the condition of 500v, so the IGBT power supply produces very few low harmonics and low grid pollution.
Table 1. Main technical indexes of induction heating power supply
|
project |
metric |
explain |
|
output rating |
kW |
|
|
Output power is of adjustable power range |
1%-100% |
|
|
control accuracy |
1% |
|
|
Resonant frequency tracking range |
10-30KHz |
Automatic tracking of the resonance frequency |
|
Output frequency tracking |
voluntarily |
|
|
productiveness |
≥95% |
Including the output isolation transformer |
|
power factor |
≥0.90 |
Over 50% of the rated power |
|
input voltage |
Three-phase AC380V |
|
|
The input voltage has an allowable fluctuation range |
+10%,-10% |
0-100% load |
|
overload capacity |
1.10 x rated, 1 min |
|
|
Cabinet body protection grade |
IP20 |
360x24 continuous continuously |
|
cooling-down method |
hydrocooling |
high reliability |
|
ambient temperature |
-20℃-45℃ |
0-100% load |
|
40℃-50℃ |
Reduced operation |
|
|
ambient humidity |
≤96% |
Do not knot dew |
|
height |
≤1500m |
More than 1500m reduced operation |
|
life length |
10-15 Years |
Excluding spare parts |
|
Equipment size |
820*500*1020mm 550*430*560mm (Specific and subject to the actual situation) |
About 100kg / 60kg |
|
control signal |
I / O passive start-stop signal (standard standard) |
Connect the footswitch or PLC remote control |
|
status signal |
I / O passive state signal (optional) |
Connect the three-color light or PLC status monitoring |
|
The temperature signal |
4-20 mA current signal (optional) |
Infrared sensor direct connection or temperature control box feedback |
|
Tuning signal |
0-5V voltage signal (optional) |
Can be PLC remote control |
|
… |
… |
… |
Table 2. Main parameters of the water cooler
|
model |
WTR-03 |
|||
|
refrigerating output |
KW |
7.2KW |
||
|
kcal/h |
6192 |
|||
|
source |
V/ph /Hz |
220V/ 50HZ |
||
|
aggregate capacity |
KW |
4.3 |
||
|
compression engine |
type |
Fully enclosed rotor type |
||
|
power KW |
2.4 |
|||
|
condensator |
type |
High efficiency internal thread copper tube fin type |
||
|
The highest pressure |
3.5 MPa |
|||
|
Fan type |
Low-noise enhanced ABS plastic impeller |
|||
|
evaporimeter |
type |
extension-type |
||
|
Take ver size DN |
25 |
|||
|
Tank volume L |
25 |
|||
|
Water side pressure |
1.5 MPa |
|||
|
water pump |
type |
Stainless steel centrifugal type |
||
|
power KW |
0.55 |
|||
|
head of delivery m |
25 |
|||
|
cryogen |
kind |
R22 |
||
|
Flow saving way |
Capillary throttling |
|||
|
Safety protection device |
High and low pressure, overload, anti-freezing, delay, overtemperature, flow protection |
|||
|
noise |
dB(A) |
64 |
||
|
Unit weight |
kg |
113 |
||
|
outline dimension (Subject to the material objects.) |
long L |
mm |
700 |
|
|
wide W |
mm |
550 |
||
|
tall H |
mm |
1000 |
||
The above cooling capacity is based on the ambient temperature of 35℃, inlet temperature of 12℃ and outlet temperature of 7℃.
Technical parameter
|
MODEL |
High frequency WTR-HF-BW series |
|
POWER |
Customize according to size requirements Optional 380v(15kw-320kw),220v(15kw-240kw)(30-320kw)etc. |
|
FUNCTIONAL MODE |
Water cooling mode, IGBT module,Frequency4-25KHZ 30-80KHZ 1030KHZ Selecting power supply and matching different specifications of sensor fixtures based on workpiece size and heating temperature requirements can meet the needs of different working conditions |
|
HEATING TEMPERATURE |
Room temperature -2000 degrees Celsius |
|
HEATING METHOD |
Various heating methods can be used based on current, power, temperature, time, process, etc |
|
EQUIPMENT SIZE AND WEIGHT |
Depending on the selected size and weight |
FAQ
Q: What is a high-frequency induction heating machine?
working principle:
It generates high-frequency current through a high-frequency power supply and flows through an induction coil.
When the workpiece is placed inside the induction coil, induced eddy currents are generated inside the workpiece due to the action of the alternating magnetic field.
Eddy currents cause the workpiece to generate heat on its own, thereby achieving heating of the workpiece.
Application areas:
Metal processing: such as metal melting, forging, quenching, welding, etc.
Heat treatment industry: improving the performance of metal materials.
Mechanical manufacturing: used for heating treatment of various components.
characteristic:
Fast heating speed and high efficiency.
It can achieve local heating and accurately control the heating area.
Energy saving and environmentally friendly, with higher energy utilization efficiency compared to traditional heating methods.
Easy to implement automated control.
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