Forming system based on low-melting-point alloy semi-solid melt

Abstract

The invention discloses a forming system based on a low-melting-point alloy semi-solid melt. The forming system comprises a preparation device and a forming device, wherein the preparation device comprises a rack; an alloy smelting device, a melt ejection device and a melt stirring device are arranged on the rack; the alloy smelting device smelts an alloy to form the semi-solid melt; the melt ejection device comprises an injection pipe; the semi-solid melt is ejected out through the injection pipe; the melt stirring device comprises a stirring bin; the forming device comprises a forming die; amain pipe cavity and a branch pipe cavity are formed in the forming die and communicate with each other; a discharge port communicates with the main pipe cavity; a plurality of cooling channels are formed in the forming die and distributed around the main pipe cavity; and a plurality of heating channels are formed in the forming die in the circumferential direction of the branch pipe cavity and distributed around the branch pipe cavity. The forming system is high in automation degree, the semi-solid alloy is uniform in component and good in crystal nucleus roundness, and the forming effect ofthe semi-solid alloy is good.

Description

technical field [0001] The invention relates to the technical field of rheological forming, in particular to a forming system based on semi-solid melt of low melting point alloy. Background technique [0002] Semi-solid alloy is a kind of "soft matter" between liquid and solid. It can be transported like a solid when it is still, and can be continuously deformed like a fluid under the action of an external force. Its internal feature is that (near) spherical crystals are uniformly suspended in the liquid. in phase. [0003] Environmentally friendly low-melting point alloys can be used to prepare semi-solid metals, and low-melting point alloys can undergo liquid-solid phase transitions within 100°C. The existing low-melting point semi-solid alloys need to go through multiple processes in order to prepare the solid alloys into semi-solid alloys. The process is complicated and the degree of automation is low. Moreover, the existing semi-solid alloy preparation devices mostly u...

AI Technical Summary

Problems solved by technology

The existing low-melting point semi-solid alloys need to go through multiple processes in order to prepare the solid alloys into semi-solid alloys. The process is complicated and the degree of automation is low. Moreover, the existing semi-solid alloy preparation devices mostly use mechanical stirring, electromagnetic Stirring and ultrasonic stirring

However, the semi-solid alloy produced by mechanical stirring has disadvantages such as uneven composition and poor roundness of crystal nuclei, and the preparation device is not easy to clean

Electromagnetic stirring and ultrasonic stirring devices still have stirring dead zone, low utilization rate of alloy and high preparation cost

In addition, after the semi-solid alloy is prepared, it needs to be processed and formed, and the forming ability of the semi-solid alloy is far less than that of lead, so the application is very limited.

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