Device and method for preparing homogeneous alloy continuous casting billet through high-intensity magnetic field composite electromagnetic oscillation

Abstract

The invention discloses a device and a method for preparing a homogeneous alloy continuous casting billet through high-intensity magnetic field composite high-intensity magnetic field oscillation, the device comprises a strong magnet, a melt storage device, a crystallizer, a dummy ingot device, an electromagnetic oscillation device and a cooling device, the electromagnetic oscillation device is composed of two pieces of conductive ceramics and a power supply; the left and right side areas of the middle part of the crystallizer adopt conductive ceramics to replace direct contact melt, the conductive ceramics on the left and right sides are respectively connected with the positive and negative poles of a power supply, the periphery of the crystallizer is provided with a strong magnet, an electromagnetic oscillation device and a strong magnetic field both act on a casting blank solid-liquid interface, and the growth and collision aggregation process during melt solidification is inhibited by the strong magnetic field; and in addition, gravity settling is effectively restrained, homogenization of alloy components is further promoted, and finally a homogenized alloy continuous casting billet is obtained. By adopting the method for preparing the alloy continuous casting billet, the alloy continuous casting billet with uniform components can be obtained, and the method for preparing the homogeneous alloy continuous casting billet is low in process cost, easy to operate and good in stability.

Description

technical field [0001] The invention designs a device and method for preparing homogeneous alloy continuous casting slabs by strong magnetic field combined electromagnetic oscillation, which is suitable for the uniform preparation of the structure and composition of most alloys, and adopts strong magnetic field combined electromagnetic oscillation technology to obtain large and The invention relates to a long-sized alloy billet, which belongs to the technical field of preparation technology of homogeneous non-segregation alloy material. Background technique [0002] With the rapid development of my country's industrial technology, the control of the solidification structure of alloys is becoming more and more important. Especially the preparation of immiscible alloys is very easy to form serious gravity segregation under the traditional casting technology. This is because there is a liquid-liquid immiscibility zone in this type of alloy during the solidification process. Th...

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Problems solved by technology

[0004] 1. It is difficult to achieve the unity of good electromagnetic penetration, wear resistance and safety for the crystallizer cylinder;

[0005] 2. It is impossible to precisely control the position where the electromagnetic shock is applied;

[0006] 3. The effect of electromagnetic oscillation is not obvious, and it is difficult to achieve the unity of firmness, durability and convenient assembly of the crystallizer as a whole;

[0007] 4. The current, frequency and their relationship with the casting process during soft contact electromagnetic continuous casting are not clear

[0008] The above deficiencies will directly lead to the surface and internal quality of the casting slab, the continuous casting slab is prone to surface defects, the grain size is large, and macro segregation is formed, the overall performance of the product is not good, the yield is not high, the production efficiency is not high and the production cost is increased.

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