Apparatus for high-throughput screw caster of multi-component gradient metal material

An apparatus for a screw caster of a multi-component gradient metal material, comprising an online powder flow-rate regulation system, a rotary feed system, a heating system, a heat insulation system, a motor drive system, a blank forming system and a control system;

• wherein the online powder flow-rate regulation system comprises at least two metal powder storages, dynamic flow-rate control valves and an intermediate storage;
• and is configured to control feed rates of the at least two metal powders into the intermediate storage so as to control ratios of the at least two metal powders in a mixed metal powder in the intermediate storage,
• wherein the at least two metal powder storages are connected with feeding holes of the intermediate storage through feeding pipelines, and the dynamic flow-rate control valves are disposed on the feeding pipelines;
• the online powder flow-rate regulation system is further configured to control completion of continuous feeding of the mixed metal powder from the intermediate storage into the rotary feed system through the feeding pipelines in sequence;
• the rotary feed system comprises a cylindrical barrel and a screw rod;
• a feeding hole is disposed in an upper end of a side wall of the cylindrical barrel and connected with the feeding pipelines through a pipeline, and the screw rod is disposed inside the cylindrical barrel;
• an outer diameter of the screw rod is equal to an inner diameter of the cylindrical barrel, such that the mixed metal powder is fed in sequence within a gap of the screw rod after entering the barrel so that it is not further mixed and homogenized in the cylindrical barrel after being molten under a heating condition;
• a conical discharging hole is disposed in a bottom of the cylindrical barrel;
• the heating system is configured to melt the mixed metal powder entered into the cylindrical barrel;
• a heating apparatus is disposed on a side wall of the cylindrical barrel;
• the heat insulation system is a heat insulation jacket disposed on an outer side wall of an induction heater;
• the motor drive system comprises a drive motor, a drive shaft and a drive shaft connector,
• wherein the drive motor is in drive connection with the screw rod through the drive shaft and the drive shaft connector;
• and a joint between the drive shaft connector and the cylindrical barrel is sealed by a sealing ring;
• the blank forming system comprises a mold, condensation crystallizers and a drawing apparatus;
• the mold is disposed at a lower end of a conical discharging hole, the condensation crystallizers are disposed at two sides of the conical discharging hole inside the mold, and the drawing apparatus is disposed at a lower end of the conical discharging hole of the mold;
• the powders are sequentially molten according to a feeding order within the cylindrical barrel and then flow into the conical discharging hole along a helical gap of the screw rod, so that a multi-component gradient metal material is fabricated in a draw-casting manner under a common action of the mold, the condensation crystallizers and the drawing apparatus;
• and
• the control system comprises an upper computer and a control signal processor;
• and the upper computer is in control connection with the drive motor, the dynamic flow rate control valves and the induction heater through the control signal processor.