High-tin-content copper-tin brazing filler metal grid-shaped composite strip and preparation method thereof

The invention discloses a high-tin-content copper-tin brazing filler metal grid-shaped composite strip. The tin content is 10wt%-60wt%; the high-tin-content copper-tin brazing filler metal grid-shaped composite strip comprises a strip-shaped copper base body, a plurality of grooves which are arranged in parallel at intervals are formed in one surface of the strip-shaped copper base body, the grooves are filled with tin to form tin bars, and the tin bars and copper around the grooves are connected into a whole. The invention further discloses a preparation method of the high-tin-content copper-tin brazing filler metal grid-shaped composite strip. According to the method, the influence of the tin adding amount on the machining forming performance can be avoided, when the tin content reaches 10wt%-60wt%, the high-tin-content copper-tin brazing filler metal strip can still be obtained through a conventional pressure machining method, and the brazing temperature is reduced. 本发明公开了一种高锡含量铜锡钎料栅状复合带材，锡含量为10-60wt％，包括：带