160kw Electric high frequency IGBT metal workpiece induction
heating machine
1. Feature of IGBT induction heating furnace:
(1) The structure of the intermediate frequency induction heating
furnace, since the current flows through the coil and the workpiece
at the same time, the electromotive force between them is quite
large. The workpiece moves in the furnace lining on the coil and
bears the pressure of the workpiece. Fasten between coils to
prevent short circuit between coils when moving. This fastening
must be firm, otherwise low-frequency vibration will cause noise.
Therefore, the coil turns must be insulated and fastened, and must
be clamped and fixed with the end plate, as if a complete overall.
(2) The water path of the coil must have enough water paths. The
principle is that the water flows in the water pipe into a
turbulent flow. The water path should not have right-angle bends,
which will reduce the flow rate and speed of the water flow and
reduce the cooling effect. The judgment method is that each branch
water has a certain water temperature, and the flow water
temperature of each channel is similar. If the water temperature of
one channel is too high, there may be welding slag or impurities in
the operation, so the intermediate frequency induction heating
furnace must monitor and control the temperature of each channel.
The water temperature of each branch should be controlled at 50 °C.
The vaporization of the cooling water at the inner side of the
copper tube at an excessively high temperature will greatly reduce
the cooling effect.
(3) The furnace lining material should be prevented from falling
and cracking. The reason is that the raw materials are not good
enough. The furnace lining material is generally refractory cement.
Once the cement absorbs moisture, it is formed into powder, and it
falls off in pieces. The process is not in place. Similar to
construction cement, maintenance is required and the time cannot be
short. This maintenance is carried out in a humid environment. The
maintenance time is about 48 hours, and there should be no
slippage. a method. In order to have a long service life of the
furnace, the drying of the furnace lining is very important. The
core is slow drying. When drying at a low temperature for a long
time of 36h, the initial temperature rise should be very slow.
(4) The welding of the tap water branch of each branch of the
intermediate frequency induction heating furnace is silver copper
welding to ensure that the welding is firm and water-proof.
(5) Intermediate frequency induction heating furnaces are generally
equipped with water guide rails, and the life of the guide rails
depends on the surfacing material and thickness. It is not
recommended to use the spraying method to build up wear-resistant
materials, because the sprayed wear-resistant powder formula is
usually a single stainless steel, which is not as good as the
high-temperature wear-resistant electrode, and the formula of the
surfacing electrode is comprehensive.
2. Advantage of induction heating machine:
1. IGBT module and inverting technologies of the first generation
been used.
2. Simple structure and light weight and easy for maintenance.
3. Simple to operate ,a few minutes is enough to learn it.
4. Simple to install,installation can be done by unprofessional
person very easily.
3. Applications of IGBT induction heating machine:
Big metal parts/bars/rods heating, quenching, hardening, annealing,
tempering, normalizing, copper brazing ,silver brazing etc.
All kinds of metallic materials' heating treatments:
Quenching/Hardening for big shafts, gears, standard bolts/rods/nuts
Surface hardening, induction heating hardening, steel pipe
induction heating, induction annealing machine.
Layer of about 2~3mm
4. Technical Parameters of LSW-160 IGBT induction heating machine:
| Model | LSW-160 |
| Working Voltage | 380V, 50/60HZ |
| Max input power | 160kw |
| Oscillation frequency | 18-23KHZ |
| Duty cycle | 100% |
| Cooling water flow | 50L/Min,0.2MPa |
| Weight | 260kg |
| Dimension (L*W*H ) | 600*480*1360mm / 800*500*580mm |
| Material | stainless steel |
| Color | support customized |
| Usage | metal heating,quenching etc |
