An apparatus for high-throughput 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 is configured to control feed rates of a plurality of metal powders, that is, different ratios of the powders, the online powder flow-rate regulation system comprises at least two metal powder storages, dynamic flow-rate control valves and an intermediate storage;
- 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 metal powders with different ratios;
- the continuously fed metal powders enter the rotary feed system through the feeding pipelines in sequence after passing through the intermediate storage;
- the rotary feed system comprises a cylindrical barrel and a screw rod;
- a feeding hole is disposed in the 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 metal powders with different ratios is distributed in sequence within a gap of the screw rod after entering the barrel, and is not mixed and homogenized 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 mixed metal powders having different components, entered into the cylindrical barrel;
- the 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 the 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 the 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 a discharging hole of the mold;
- the powders with different ratios are sequentially molten according to a feeding order within the cylindrical barrel and then flow into the conical discharging hole along the 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.