Gas-assisted continuous casting extrusion method and device

Abstract

The invention discloses a gas-assisted continuous casting extrusion method and device and belongs to the technical field of metal forming continuous extrusion. According to the method, after metal ismolten, the molten metal flows into an extrusion wheel groove along a flow guiding plate, under the effects of inert gas, the molten metal is laid and expanded closely attached to the extrusion wheelgroove wall, and is solidified into a thin layer, under the effects of rotation of an extrusion wheel and a mold cavity plug, the metal thin layer on the wheel groove wall ceaselessly enters a mold tobe accumulated and extruded, and a finished product is obtained. By means of the method, it can be avoided that because of product casting, a structure is thick and large and not uniform, energy consumed for secondary heating and surface treatment before continuous extrusion machining of a casting is eliminated, and the energy consumption is reduced; the material yield is increased; and meanwhile, the production procedure can be substantially shortened, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a method and device for gas-assisted continuous casting and extrusion, belonging to the technical field of metal forming continuous extrusion. Background technique [0002] Conform continuous extrusion is a high-efficiency short-process technology for processing non-ferrous metal materials. Its working principle is: the billet is pressed into the extrusion wheel groove under the action of the compaction wheel, and then the friction between the extrusion wheel groove and the billet Under the action, it is continuously fed to the plug for upsetting, and then enters the mold to extrude the product. Compared with traditional forward and reverse extrusion technology, continuous extrusion technology has the following advantages: low energy consumption; realize continuous production without interruption, high production efficiency, good economic benefits; finer and more uniform grains; no shrinkage problem, no pressure Besides, the m...

AI Technical Summary

Problems solved by technology

Although such a connection method can achieve the purpose of continuous casting and continuous extrusion, it increases the energy consumption of material processing in the process of processing the continuous casting slab in the middle, increases the cost, and in the process of secondary heating It may make the originally coarse and uneven structure become more coarse and uneven. The shearing action and extrusion action of continuous extrusion can refine the structure. The ability to make the structure uniform is limited, so this connection method cannot get the best product. performance

[0005] In addition, the commonly used casting extrusion technology is to directly enter the molten metal as a billet into the groove of the extrusion wheel through dynamic crystallization and finally extrude it, but the dynamic crystallization process is equivalent to the casting process and will also cause coarse and uneven structures. Compared with the above-mentioned continuous casting and continuous extrusion method, the process flow is shortened, but the improvement of the structure and properties of the material is not obvious

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