Mo alloy Hab soldering head

The welding tip is composed of two pieces of a highly conductive metal stick together, two pieces of metal center is insulated, only has a contact in the contact tip place will forma small resistance , the bottom is flat and smooth. Operating the machine, when the method of pneumatic or use pedal to the bonding pressure on enamelled wire, the pressure will continually increase, when the enameled counterforce on the welding head reaches the set welding pressure time, Will trigger a pulse current, the current time is very short, usually in a few milliseconds to tens of milliseconds, about the size of dozens to a hundred and double, current from the head end through, there is a contact resistance at the tip end, In the contact resistance of the local heating and electric spark is produced, the heat to the enameled wire paint removed and a lot of heat will transfer to the enameled copper wire on the inside, at the same time, apart of the current will flow from the welding wire burned skin bottom, copper wire itself in fever, copper wire in the short term temperature reaches the melting point of the molten state, under the pressure and bottom metal form nugget, new way, enameled wire is connected with metal substrate.