Continuous casting and continuous extrusion method

Abstract

The invention discloses a continuous casting and continuous extrusion method. The method comprises the following steps that a wheel belt type continuous casting method is adopted, under the conditionsthat the casting temperature is 680-1180 DEG C, and the rotating linear speed of a casting wheel is 20-35 meters / minute, a metal liquid is poured into a square crystallization cavity formed by a casting wheel groove and a steel strip to be continuously cast into a square casting blank, then the square casting blank is directly conveyed into a continuous casting extruding machine, and under the condition that the rotating linear speed of a casting extruding wheel is 20-35 meters / minute, the square casting blank is continuously extruded into a required shape. According to the method, wheel belttype continuous casting and the continuous casting extrusion are creatively combined, the metal liquid is continuously cast into the square casting blank through the wheel belt type continuous casting method, and then is conveyed into the continuous casting extruding machine for continuous extrusion forming, the problem of rapid cooling of the casting blank is effectively solved, the requirementfor the cooling strength of the continuous casting extruding machine is reduced, so that the rotating speed of the casting extruding wheel of the continuous casting extruding machine can be improved,the rotating linear speed of the casting extruding wheel can be increased to 20 meters / min or above, and the production efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of metal forming, in particular to a continuous casting and extrusion method. Background technique [0002] Continuous casting and extrusion technology is a short-process extrusion technology. This technology is to pour the molten metal directly into the wheel groove of the continuous casting extrusion machine, and cool the molten metal through the casting extrusion wheel. After the molten metal is cooled and solidified into a billet, Then, the friction force applied to the metal billet by the rotary casting wheel is used to realize the continuous extrusion of the metal. Continuous casting and extrusion technology realizes the integration and continuity of continuous casting and continuous extrusion of molten metal, and has the advantages of short process flow, less production procedures, energy saving and material saving. Continuous casting and extrusion technology has been widely used in the production of...

AI Technical Summary

Problems solved by technology

[0003] However, the biggest problem of continuous casting and extrusion technology is the low production efficiency, which is mainly due to the fact that the cooling of molten metal is mainly realized through the casting and extrusion wheel, and the cooling of the casting and extrusion wheel is through the circulating cooling water inside the casting and extrusion wheel accomplish

In addition, during the continuous extrusion process, heat will be further produced due to friction, which eventually leads to a great restriction on the rotation speed of the continuous casting extrusion wheel, which makes the production efficiency of the continuous casting extrusion machine low.

Moreover, at present, the rotational linear speed of the casting wheel of the continuous casting extrusion machine is usually lower than 20 m / min, while the production efficiency is lower than 600 kg / hour, which greatly limits the further popularization and application of the continuous casting extrusion technology.