induction heating service,induction heater,induction heating equipment and induction heating system are supplied by DaWei Induction Heating Machine Co.,Ltd
Induction heating is a form of non-contact heating for conductive materials, when alternating current flows in the induced coil, varying electromagnetic field is set up around the coil, circulating current(induced, current, eddy current) is generated in the workpiece(conductive material), heat is produced as the eddy current flows against the resitivity of the material.
Induction heating is a rapid ,clean, non-polluting heating form which can be used to heat metals or change the conductive material’s properties. The coil itself does not get hot and the heating effect is under controlled. The solid state transistor technology has made induction heating much easier,cost-effective heating for applications including soldering and induction brazing ,induction heat treating, induction melting,induction forging etc.<
induction preheating copper rod for hot forging
In order to want to improve safety and productivity, and reduce energy costs, by using induction instead of resistive heating. To maximize productivity, they want to be able to heat 3 brass rods at a time to 780° C within 25 seconds. For this application test, we are only heating one rod, so our goal is to heat the single rod to 780° C within 25 seconds with less than 45 kW of power. This will ensure that when heating 3 rods, that the 110 kW system will meet the production requirements.
DW-HF-70kW Induction Heating Power Supply, operating between 10-50 kHz
• Brass rod
• Custom coil, 10 turns, D=50mm, designed and manufactured by DaWei Induction Power Technologies for this specific application – capable to heat 3 rods at a heat cycle.
Temperature: 780° C
Power: 70 kW
Voltage: 380 – 480 V
Time: 24 sec
Frequency: 32 kHz
- The DW-HF series Power Supply was connected to the DW-HF-70kw Heat Station.
- The custom Coil was attached to the Heat Station.
- The Brass rods were placed inside the Coil.
- The Power Supply was turned on.
- The DW-HF series operating at 20 kW was able to successfully heat the single brass rod within 24 seconds, which was less than the 25 second time requirement established for the test. Three brass rods are expected then to heat within 25 seconds with approximately 60 kW of power (3 rods will be 3x the load and 3x the power). The 90 kW Induction system will therefore meet the customer’s requirements.
Induction preheating provides:
- Faster heating cycles
- The process is safer than the flame heating
- Technology without pollution, clean and safe