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Horizontal continuous casting device and method for high-conductivity and high-strength copper alloy round bar

An alloy rod and horizontal technology, which is applied in the field of preparing chromium-zirconium copper alloy, can solve problems such as cracks in billet and inability to cast chromium-zirconium-copper alloy billet, etc., and achieve the effect of improving production efficiency

Active Publication Date: 2013-05-08
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] So far, the existing technology cannot horizontally and continuously cast large-diameter, super-long chromium-zirconium-copper alloy billets under non-vacuum conditions
The main problem is that there is no vacuum melting-horizontal continuous casting device, and the slab is prone to cracks

Method used

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  • Horizontal continuous casting device and method for high-conductivity and high-strength copper alloy round bar

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Embodiment 1

[0019] The casting crystallizer is installed on the horizontal continuous casting holding furnace 6, and the graphite lining 3 is a hollow mold to realize the shape casting of the billet. After the industrial copper plate is melted in the smelting furnace 11, appropriate alloys are added, and it flows into the refining furnace 10. After adjusting the chemical composition in the refining furnace 10, it enters the holding furnace 9. When the melt temperature reaches 1255-1260 ° C, it starts casting and controls the cooling device. The flow in 4 reaches 1.9m 3 / h, control the traction system 2 so that the casting speed is 108mm / min, and the electromagnetic parameters are 50A, 30Hz. In the normal production process, chromium and zirconium master alloys need to be added regularly and quantitatively. Using this process, it is possible to continuously and stably produce chrome-zirconium copper billets with a diameter of Φ87mm and a length of 45m. There are no cracks on the surface, ...

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Abstract

The invention discloses a horizontal electromagnetic continuous casting device for preparing a chromium-zirconium-copper (Cr-Zr-Cu) alloy bar billet under a non-vacuum condition, belonging to the technical field of new material preparation. In the invention, under the non-vacuum condition, a multi-pool insulation heating furnace is adopted so as to integrate a smelting furnace, a refining furnaceand a holding furnace; and the length of a graphite lining is shortened, and a large-diameter molten pool with conicity is formed between the holding furnace and the end part of the graphite lining; and an electromagnetic device is arranged outside the molten pool so that copper solution entering the graphite lining is kept at uniform temperature, thus eliminating the defect of cracks of the castbillet and achieving the purpose of continuously and stably producing the bar billet with large diameter of more than 45m. The horizontal continuous casting method disclosed in the invention has the advantages of stable process, low cost and the like, and is convenient in operation; and the bar billet obtained by the method has the advantages of no surface cracks, uniform solidification structure, no air holes and slag inclusion and uniformly distributed elements, thus being suitable for preparing billets (such as contact wires) used in high-speed railways and other industries.

Description

technical field [0001] The invention belongs to the technical field of new material preparation, and relates to a process for preparing chromium-zirconium-copper alloy. Background technique [0002] The Cr and Zr elements in the chromium-zirconium copper alloy are easy to oxidize, especially the zirconium element cannot be added under the condition of non-vacuum and non-protective atmosphere. The alloy is usually prepared by vacuum melting and vacuum casting. The conditions for vacuum melting and casting are: select high-quality raw materials, reduce harmful impurities such as oxygen and sulfur; shorten the length of the launder as much as possible to reduce volatilization during the casting process; reduce casting time to prevent oxidation of the melt, etc. Due to the high production cost of vacuum melting and casting, the composition of the ingot is not uniform, and the production of continuous and ultra-long ingots cannot be realized, which limits the use of chromium-zirc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/049C22C1/02C22C9/00
Inventor 李廷举王同敏李维源张剑付亚波曹志强卢一平
Owner DALIAN UNIV OF TECH
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