Stripping for enameled wire. My little know-how.

[Pano]

It's certainly very fast!

 

[jameshillj]

Ur you can get an enamel stripping machine for as little as $40, and better ones for about 100...

 

[Zampotech]

Was the technique aiming to induce an eddy current (and using skin effect) around the circumference of the single copper wire (along a certain length of the wire), and hence raise the copper wire skin temperature rapidly to a point where the enamel melts/burns/expands and smokes, and then allows the enamel to be quickly wiped off whilst it is still somewhat hot?

Did you change the frequency, or find it of most use with that range of wire diameters? And what was the frequency?

Did you get to melt the copper at all, or the parts used to generate the field, during prototyping?

Yes, only the surface layer is supposed to be heated.

Adjustment is made by exposure time. The oscillator frequency is approximately 950 kHz.

At long exposure copper is heated to a white glow and melts.

The photo shows the exposure time control

Ur you can get an enamel stripping machine for as little as $40, and better ones for about 100...

If you're talking about the type tool ABISOFIX, it handles thick wire. Thin wires unfortunately can break.

 

[trobbins]

Zampotech, thanks for response. Your photo links aren't working.

I guess if melt temp is 1,000C and and you were after 400C then exposure time is about 40%, given adiabatic heating of just the copper surface.

Do you have a photo of the interface ferro transformer that indicates the main winding and where the wire being heated is located ?

Regards, Tim

 

[Zampotech]

I selected the exposure time experimentally. For wires of the same diameter, but with different varnish time is slightly different.

Photo not applied. The working area is a slit 0.6 mm wide

 

[trobbins]

Is 0.6mm the effective core gap length?

 

[Zampotech]

Is 0.6mm the effective core gap length?

No, width 10 mm, clearance 0.6 mm.
the wire is processed to a length of 10 mm