The ingot process is a procedure that finishes fused copper alloy metal with a rolling or forging method that makes a block of metal called ingot cast, which is of suitable size and form in order to dissolve again later. A manufacturing process of copper alloy ingots used by Seowon Co., Ltd. makes the same number of ingots as ingot cases simultaneously by pouring fused copper alloy into ingot cases. Brass ingot is cast with a wheel type method while bronze ingot is produced with an orbit type method.