Italiano 
Soldering is one of the final processes requiring great care and attention, since it is one of the most essential and complex aspects of a metal frame.
In order to solder such materials as steel, nickel silver, Niclafor, bronze and Monel metal, we at D.F. employ principally two types of process.
- Contact soldering with the electrical current passing through two copper electrodes. The silver alloy used is melted by the high temperature making the two components unite and, on contact with the two electrodes the two parts are soldered. This is why the vast experience of our operators is so vital since they have to control the pressure and contact time to avoid burning or melting the piece and in order to guarantee a strong solder.
- Induction soldering involves creating a very strong magnetic field passing through a small copper conductor that transfers the electric current to the inside of the two components, which are soldered by the silver alloy placed between the two heated parts. What’s more, we use deoxidising liquids and pastes, chosen according to the material, which help the flow of the alloy. We also have a system using a solenoid valve that can open according to the operator’s setting to project a gas (hydro-nitrogen) onto the area to be soldered to avoid the piece becoming oxidised.
For these processes we use silver alloy wires and straps of different types according to the size and internal percentage of silver. For each component we choose the most suitable wire or strap by analysing the material and the size of the component to be soldered, thus optimising the hold and avoiding any possible defects.
This is why every step in the process must be performed with extreme care and it is thanks to the skill, manual dexterity and precision of our operators that we can deliver your designs to perfection.
