Specialized Induction Heating

This is a video of non-contact heating via magnetic induction. I can't remember how much power the heater was running, but I imagine that it's at least a few hundred watts @ 60kHz or so.

The solder itself is heating up and melting...the glass beaker is just there to contain the molten blob. The glass is truly "invisible" to the magnetic field of the coil.

The heater itself was designed by a good friend, who did an outstanding job on the electrical and mechanical design. It utilizes a resonant-mode topology, making it extremely efficient. Water cooling allows 100% duty cycle, with power levels up to several kilowatts.

Notice the solder bending around a little bit in the video. Some of that motion is due to the expansion of the solder itself as it heats up, and some of it is due to the influence of the high-density AC magnetic field surrounding it.

Category:

Education

Tags:

• induction
• heater
• heating
• non-contact
• magnetic
• field
• electric
• spark
• weld
• hot
• bend
• melt
• fire
• metalforming