Ni-Zn high-strength cupronickel alloy and preparing method thereof

Abstract

The invention discloses Ni-Zn high-strength cupronickel alloy and a preparing method thereof. The Ni-Zn high-strength cupronickel alloy is prepared from, by weight, 20-40 parts of Ni, 30-35 parts of Zn, 20-30 parts of Mn, 12-18 parts of P, 4-7 parts of Fe, 5-15 parts of Al and the balance Cu. The performance of the cupronickel alloy is higher, tensile strength and corrosion resistance can better meet the requirement of artware, the specific color intensity and hardness of cupronickel alloy can be maintained for artware produced in the later stage, and environment friendliness is higher and daily use requirements of people are better met. The cupronickel alloy contains zinc which can be dissolved in copper nickel in a solid state to generate a solution strengthening effect, and corrosion resistance is also realized. The cupronickel alloy has high strength and corrosion resistance, high elasticity, attractive appearance and low price, and cost can be saved.

Description

Technical field [0001] The invention relates to the field of copper wire processing, in particular to a nickel-zinc high-strength copper-nickel alloy and a preparation method thereof. Background technique [0002] Cupro-nickel alloy is a copper alloy with nickel as the main additive element. Its color is beautiful and mild silver-white, with good ductility and corrosion resistance. Generally, iron, lead and other elements are generally added to the composition of cupronickel alloys in the prior art in order to enhance corrosion resistance and formability. Cupronickel is mostly used for corrosion-resistant industrial parts, but there are few cupronickel alloys suitable for artistic casting and forming processes. [0003] Due to the contact with people, the alloying elements of art castings need to be safe and environmentally friendly, and require simple composition, lead-free and other heavy metal alloying elements. The existing white copper contains many metal materials such as ...

AI Technical Summary

Problems solved by technology

Although this process solves the problem of oxygen absorption in the smelting process of cupronickel, when the hydrogen changes from a solid phase to a liquid phase (melting point 1080°C), there is a sudden change in the amount of hydrogen dissolved, resulting in a large amount of hydrogen absorption; on the contrary, when the temperature drops to 1080°C, the hydrogen There is also a sudden change in the solubility in copper liquid, which decreases sharply. During the slow solidification process, precipitated pores are formed, which are pinholes. The quality of castings is reduced. The white copper material is easy to absorb oxygen during smelting, and the cast castings are prone to pore defects. Therefore, the ordinary smelting process cannot meet the requirements of handicrafts.