Method for producing ca-containing copper alloy
A manufacturing method and technology of copper alloys, which are applied in chemical instruments and methods, metal layered products, metal material coating processes, etc., can solve the problems of floating matter, low Ca addition rate, easy oxidation of metal Ca, etc. Engaging, excellent surface quality effect
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Embodiment 1
[0070]Hereinafter, the result of the evaluation test which evaluated the manufacturing method of the Ca containing copper alloy of this invention is demonstrated.
[0071] (Copper-coated Ca material)
[0072] An oxygen-free copper wire φ3mm (with an oxygen content of 10 mass ppm or less) having an oxygen content of less than 100 mass ppm was prepared, and the surface of metal Ca was sprayed by arc spraying or flame spraying to produce a copper-coated Ca material. At this time, as metal Ca, bulk metal Ca having a particle size of 5 mm to 10 mm and rod-shaped metal Ca having a diameter of 10 mm×20 mm were prepared.
[0073] Metal Ca is uniformly arranged on the wire mesh, and copper is uniformly deposited on the metal Ca by vibrating the wire mesh. This operation was carried out at least once, and it was visually confirmed that the surface of the metal Ca was completely covered, and the thickness of the coated copper was about 1 mm.
example 1～4
[0075] 5 kg of electrolytic copper with a purity of 99.9% by mass or more was melted at 1150°C in a vacuum melting furnace, and the copper-melt solution kept in an Ar atmosphere using the above-mentioned copper-coated Ca material had a Ca concentration of the target concentration shown in Table 1. The method is added, and poured into an iron casting mold, thereby obtaining an ingot of 70mm×50mm×150mm.
Embodiment 2
[0093] Next, copper-clad Ca materials shown in Table 2 were prepared as follows.
[0094] Copper wires having an oxygen content of φ3mm shown in Table 2 were prepared, and the surface of metal Ca was sprayed by an arc spraying method or a flame spraying method. At this time, the metal Ca is uniformly arranged on the wire mesh, and the copper material is uniformly deposited on the metal Ca by vibrating the wire mesh. This operation was carried out at least once or more, and it was confirmed visually that the surface of the metal Ca was completely covered.
[0095] For the obtained copper-coated Ca material, calculate the volume V of the metal Ca Ca and the volume V of the clad copper Cu The volume ratio between V Cu / V Ca , and the weight W of metal Ca Ca and the weight of clad copper W Cu The weight ratio between W Cu / W Ca . The results are shown in Table 2.
[0096] In addition, using the copper-coated Ca material prepared as above, an ingot was produced in the sam...
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Abstract
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