An electromagnetic continuous casting method and device of complex ingot blank

Abstract

The invention discloses an electromagnetic continuous casting method and device of complex ingot blank, which inserts the graphite baffle in the continuous casting water-cooled mold, and sets up the hot top at the top of the water-cooled mold with three rain-style pouring opening on the hot top, and installs the electromagnetic brake outside the water-cooled mold and under the graphite baffle. During the casting process, the inner metal liquid pours into the water-cooled mold through the first rain-style pouring opening, the outer metal liquid pours into the water-cooled mold through the second and third rain-style pouring opening. They are divided by the graphite baffles to form the three-layer complex ingot blank. The electromagnetic force generated by iron core prevents the mixed flow of the inner and outer metal liquid under the graphite baffles. The invention uses two or more metal liquid to directly and continuously cast the complex ingot blank to ensure that the interface has a good metallurgical combination and the thickness of the ingot blank inside and outside layers are adjustable; the invention can produce large size ingot blank and significantly reduce the production cost of complex layer materials, with relatively simple process and equipment, which is easy to implement high-volume continuous production.

Description

technical field [0001] The invention relates to a casting method and device for a double-layer cast slab, belonging to the technical field of metal material preparation. Background technique [0002] Clad metal material is a new type of composite material prepared by combining two or more metals with different physical, chemical and mechanical properties at the interface by using composite technology. Complementarity effect" can make up for their respective deficiencies. It is widely used in the fields of automobiles, ships, aerospace, petrochemical, electronics and nuclear industries. [0003] At present, there are many methods for preparing bimetallic materials. Generally, mechanical or chemical methods are commonly used to compound metal materials with different properties in the form of solid-solid or solid-liquid, such as rolling compounding, explosive compounding, solid-liquid cladding and so on. However, in the subsequent rolling and mechanical processing of the cl...

AI Technical Summary

Problems solved by technology

However, this method is mainly used to produce round ingots, and is not suitable for producing slabs and is only suitable for cases where the melting point of the core metal is high and the melting point of the outer metal is low.

[0015] In the patent No. 01109076.6 published in 2002, a core-filled continuous casting method was proposed. The main feature of this method is to use two crucibles up and down, so that the core metal and the outer layer metal are melted in the two crucibles up and down respectively; The guide tube and the crystallizer together constitute the casting mold of the continuous casting casting tube, in which the outer metal liquid solidifies to form a casting tube; while the outer metal casting tube is pulled down, the core metal liquid is filled into the casting tube, and at a certain Realize the solidification of the core metal and its compounding with the outer metal at a certain casting speed and temperature. This method is mainly used to cast multi-layer round ingots and is only suitable for the case where the melting point of the core metal is low and the melting point of the outer metal is high.

However, this method is only suitable for the production of double-layer cast slabs with left and right layers

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