Spring form environment -friendly coating silver solder ring

The utility model discloses a spring form environment -friendly coating silver solder ring, two ring at least pitch diameters that it was formed by filament or the silver solder coiling of thin narrowband are 2.0 mm-56.0 mm's spring form silver solder core and direct adhesion and constitute at the outer silver brazing flux coating of spring form silver solder core, and the silver solder core was described to the coiling spring filament silk directly is 0.1-4.0mm, and the sectional form is circular or polygon etc.. The utility model has the advantages of production simple process, low in production cost, pollution -free, the convenient to use of finished product brazing filler metal environmental protection can directly braze in succession, need not to add the borer agent in addition, have realized that the borer agent is convenient, swift, quantitative, the efficient is added in advance, have effectively reduced the use amount of solder flux, filament or the silver solder coiling of thin narrowband become the spring form, can increase spring form brazing filler metal whole with the area of contact that treats welder's piece, guarantee to accelerate heat conduction speed and the fusional speed of brazing filler metal mutually synthermal under, avoid treating the overheated or overburnt hidden danger of welder's piece production.