Patent ID: 8163061
Filing Date: 2012-04-24
Classification: C22B,H05K,Y02P

Abstract:
1. A granulation method for granulating a (CuX) 6 Sn 5 compound wherein said method comprises forming a composition a (CuX) 6 Sn 5 compound and tin by adding an element X to a solder bath, passing the composition comprising a (CuX) 6 Sn 5 compound and tin through a multi-perforated plate to granulate the (CuX) 6 Sn 5 compound wherein plural multi-perforated plates are used and a diameter of a multi-perforated plate provided upstream is smaller than that of a multi-perforated plate provided downstream and wherein X represents an element which is solved in Cu but forms a precipitate with Sn.