Explosive welding manufacturing method of high-purity niobium-oxygen-free copper composite plate

Abstract

The invention discloses an explosive welding manufacturing method of a high-purity niobium-oxygen-free copper composite plate. The method comprises the following steps that a high-purity niobium plateserves as a composite plate, an oxygen-free copper plate is used as a substrate, and high-purity niobium is manufactured in an explosive welding mode; and the quality purity of the high-purity niobium plate is not less than 99%, the thickness of the high-purity niobium plate is not larger than 2 mm, the oxygen content in the oxygen-free copper plate is less than 2 ppm, and the thickness of the oxygen-free copper plate is larger than 10 mm. According to the method, the composite surface of the high-purity niobium plate and the oxygen-free copper plate are subjected to high-speed collision through explosion welding to form a solid-phase metallurgical bonding to be combined, the defect that the oxidation of the high-purity niobium plate and oxygen absorption of the oxygen-free copper plate in the heating rolling process are avoided, the problem that the high-purity plates with relatively large elongation rates are difficult to cold rolling and rolling is solved, and the excellent superconducting performance of the high-purity niobium material is kept, and meanwhile, the thickness of a superconducting cavity is increased by the oxygen-free copper plate, and thus the mechanical stability of the superconducting cavity is enhanced.

Description

technical field [0001] The invention belongs to the technical field of manufacturing high-purity metal composite plates, and in particular relates to an explosive welding manufacturing method of high-purity niobium-oxygen-free copper composite plates. Background technique [0002] With the further growth of human society's demand for energy, nuclear fission energy has become one of the pillar energy sources in my country's energy development strategic planning. The cumulative stock of nuclear fuel generated by nuclear power operation will reach about 10,000 tons. How to properly dispose of nuclear fuel, especially the long-lived high-level radioactive waste, is a major issue that cannot be avoided in my country and even the international nuclear energy community, and is also one of the bottleneck issues affecting the sustainable development of nuclear power. . Accelerator Driven Sub-critical System (ADS for short) is internationally recognized as the most promising means of ...

AI Technical Summary

Problems solved by technology

However, there is no proprietary technology for the preparation of niobium-copper composite plates, especially there is no publication of the preparation technology for two high-purity metal composite plates, and the high-purity niobium-oxygen-free copper composite plates need to ensure high-purity niobium materials Excellent superconducting properties