Device for preparing semi-solid alloy rheological slurry or blank

Abstract

The invention discloses a device for preparing semi-solid metal and alloy slurry, which mainly comprises an electromagnetic stirrer, an insulating layer, an external cooling controller, a valve, a draft tube, a preparation crucible, an insulating crucible cover, a standing crucible, a melting crucible and a thermocouple. The middle part of the preparation crucible is provided with an internal cooling controller, and the outer wall of the internal cooling controller forms a clearance with the inner wall of the preparation crucible. The device can be connected with a press-casting machine, an extruder, a continuous casting machine and a forging machine, wherein the press-casting machine consists of a press-casting fixed die, a press-casting movable die, an injection chamber and a punch head; the extruder consists of a right extrusion die profile, a left extrusion die profile, an extrusion cylinder and an extrusion rod; the continuous casting machine consists of a tundish, a crystallizer, a cooling water nozzle and a traction mechanism; and the forging machine consists of a forging die cavity and a forging die. The device has the advantages that the device has simple and compact structure, low investment cost and strong practicability; the temperature field and tissue of the prepared slurry are distributed evenly; the semi-solid alloy slurry is pure, does not bubble and has good self cleanness; and the device can produce large-specification semi-solid slurry or blank, and is quite suitable for the preparation and formation of the semi-solid slurry or the blank.

Description

technical field [0001] The invention belongs to the technical field of semi-solid metal processing, and relates to a device and a method for preparing semi-solid alloy rheological slurry or billet. In particular, it provides a device and method for preparing large-scale semi-solid alloy rheological slurry or billet. Background technique [0002] Since Professor Flemings of the Massachusetts Institute of Technology invented the semi-solid metal forming technology in the 1970s, the preparation and forming technology of semi-solid metal paste as a new technology immediately attracted widespread attention from all over the world. A lot of manpower, material and financial resources have been invested in the research and development of this technology. At present, many metal slurry preparation methods have been invented. At present, the relevant reports mainly include: electromagnetic stirring method; mechanical stirring method; double helix Stirring method, single screw stirring...

AI Technical Summary

Problems solved by technology

However, when using this device to prepare semi-solid metal slurry, although a strong composite electromagnetic stirring technology is used to help the flow of the semi-solid alloy slurry, the inhomogeneity of the temperature field of the slurry and the inhomogeneity of the slurry structure It still exists obviously, and it can only produce semi-solid metal slurry or billet of small size, but cannot produce large-scale semi-solid alloy slurry or billet, and the electromagnetic stirring equipment of this equipment adopts frequency conversion device, and the purchase cost is relatively high , the structure is complex, so it also limits the popularization and application of the device,

[0005] In short, in the equipment and devices for preparing semi-solid metal and alloy slurry or billet by electromagnetic stirring method at home and abroad, even if various measures such as low-frequency stirring are adopted, due to the existence of the skin effect and the inherent heat dissipation characteristics of the slurry, There are still large inhomogeneities in the temperature field distribution and tissue distribution of the slurry, and it is not easy to produce high-quality semi-solid slurry or billet, which limits the further development and application of this technology. Therefore, how to overcome these problems has become the current expansion The key to the application range of semi-solid metal slurry prepared by electromagnetic stirring technology

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