It's just another method of getting the heat to the point of union. Its virtue is that the heat is localized to only the area of slight gap between the two (or more) parts being joined. The mechanism is simple: electrical current bridging a loose connection will encounter resistance, and this results in heat at that union. If the union had been prepared with a coating of flux and a small amount of hard solder that heat will melt the solder and it will instantly bridge the gap between the parts. At the same time the current flow at the union encounters much less resistance and the heat dissipates.
You don't see this machine used much in electronics because the induced current can easily clobber electronic components -- it's devastating to semi-conductors. Dip and iron soldering remain the preferred method when soldering electronic devices.
I used the technique on this model as the easily melted resin of the sail was used as the jig that positioned the rail and rail studs as the parts were soldered. An electrode on a stud and an electrode on the rail completed the circuit. A foot kill-switch assured quick and assured control of current.
Other applications of resistive soldering:
:
David
You don't see this machine used much in electronics because the induced current can easily clobber electronic components -- it's devastating to semi-conductors. Dip and iron soldering remain the preferred method when soldering electronic devices.
I used the technique on this model as the easily melted resin of the sail was used as the jig that positioned the rail and rail studs as the parts were soldered. An electrode on a stud and an electrode on the rail completed the circuit. A foot kill-switch assured quick and assured control of current.
Other applications of resistive soldering:
:
David
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