Induction heating is faster than any horn. It can be used to heat a steel part red-hot in a matter of seconds. With a conventional induction hob available, you can assemble a heater that will heat up the metal for forging, quenching or tempering.
- Induction hob – http://alii.pub/678vcs
- 1/4 and 3/8 inch copper tube;
- fittings for 3/8 ” pipe with external thread – 2 pcs .;
- nuts for fittings – 2 pcs.;
- mini pump;
- copper welding cable;
- cable lugs – 2 pcs.
Induction heater manufacturing process
For the manufacture of the heater, it is necessary to bend a spiral from a copper pipe 3/8 inch, equal in size to the coil of the plate. Fittings with an external thread are installed at its ends. The coil is then secured over the coil. You can screw plexiglass onto the plate, then a plywood spacer, and again plexiglass, as in the photo. In this case, the spiral will lie between the glasses.
Then you need to make 2 tees from the 1/4 inch pipe. To do this, flaring is done on a small section for the installation of the nut. Then the workpiece is drilled in the middle.
Another short piece of pipe is soldered to the hole.
The end of the workpiece opposite the nut must be squeezed to seal. Then a 3/8 “piece of tubing is put on it and soldered. This will be the cable crimp sleeve.
Next, we take 2 thick copper cables, strip their ends, and crimp the veins in the sleeves of the tees.
The tees are screwed onto the spiral fittings and tightened. Hoses are pulled onto the side outlet, through which water will then circulate for cooling.
Now, when the stove is turned on, the parts clamped between the ends of the wires will warm up and weld together. For example, you can attach copper brackets to the cable ends to secure the jaws of the pliers. Then by clamping one part in some, and the second in others, it will turn out to weld them.
In order not to overheat the copper coil, a pump is connected to the hoses on the tees, which will pump water.
To use the device for heating steel billets, a plastic or wood handle must be installed at the ends of the cable.
A coil of the required diameter is rolled up from a thick copper wire or a thin tube by 3-4 turns. At its ends, lugs or lugs are provided for connecting to the cable on the handle.
Now we start the pump to circulate water in the main spiral, and turn on the stove to the maximum. After that, we place the steel blank inside the coil on the handle. In a matter of seconds, it will be red-hot.
A thicker coil can be installed to heat massive workpieces.