(1) no mold needed;

(2) it is suitable for the preparation of refractory metal materials;

(3) high precision can realize near net forming of complex parts;

(4) the microstructure is fine and uniform, and the mechanical properties are excellent;

(5) gradient materials can be prepared;

(6) quick repair of damaged parts can be realized;

(7) processing flexibility is high, can realize the rapid conversion of the manufacture of many varieties and batch parts.