Study On Producing Pure Copper Single Crystal Ingot By Continuous Casting Of Single Crystal Metals(ccsc)

The technique of continuous casting of single crystal metals (ccsc) is a advanced type continuous casting ,which has been developed very rapidly in the world. The purpose of this paper is to catch up with the advanced manufacturing technique, to study the principle of ccsc and its key problems, and to lay a foundation for the development of ccsc in our country, to promote the industrial production and engineering application of single crystal metals. The characteristics and the main achievements of this paper are: 1. A horizontal ccsc apparatus is designed and made, through technical test, some single crystal copper wires 6mm in diameter and 9?0m in length with mirror surface have been successfully produced. 2. The key problems of equipment design and operation process are mastered and solved progressively. 3. It is shown that the mechanism of evolvement of single crystal is the competent growth of grain through observation and analysis of the structure evolvement at the staring stage. The necessary condition to promote single crystal evolvement is to form a convex liquid- solid interface towards the liquid. 4. The mechanical, electrical and other characters of the pure copper single crystal ingot are tested and studied, the result showed that the capabilities of the pure copper single crystal ingot are superior to the capabilities of common pure copper ingot produced by ordinary methods. These predominant capabilities of the pure copper single crystal ingot include static tensibility, ductibility, cold drawing capability, conductivity, purification and compactness.