With excellent high-temperature strength and creep resistance, TZM alloy can be used for manufacturing mandril ejectors of seamless steel pipe penetration machines. Molybdenum alloy ejectors are formed by adding rear earth materials into molybdenum powder raw materials through mixing, molding, appearance processing, high-temperature sintering and other processes, with the finished product denstity of more than or equal to 9.4g/cm³. Molybdenum ejectors are mainly applied to perforation of seamless steel pipes made of stainless steel, drill steel, bearing steel, high-temperature alloy steel and so on.