Novel high-elasticity Cu-Ni-Mn alloy and preparation method thereof

Abstract

The invention discloses a novel high-elasticity Cu-Ni-Mn alloy which comprises the following components in percent by weight: 15-20 percent of Ni, 15-20 percent of Mn, 0.1 percent of Ti, 0.5-1 percent of Al, 0.05 percent of P, 0-0.1 percent of Re and the balance of Cu, wherein the weight percent sum of all the components is 100 percent. The invention also discloses a preparation method of the high-elasticity Cu-Ni-Mn alloy, which is simpler, is capable of reducing the preparation cost of the alloy, and solves the problems of a mass of pores and defects and the like inside a cast ingot becausethe Cu-Ni-Mn alloy is extremely easy to absorb gas during smelting and casting, and a key problem that the cast ingot is easy to crack during the rolling to cause the subsequent processing not to be favorably carried out. The alloy is suitable for making various elastic elements, contact springs, switches, contacts and the like in industries of instruments, electrical appliances and the like.

Description

technical field [0001] The invention designs a white copper alloy material and a preparation method thereof, in particular to a novel elastic alloy material with copper as a matrix and nickel, manganese, aluminum, titanium, phosphorus and rare earth as main alloy elements and a preparation method thereof. Background technique [0002] Elastic alloy is a very important type of alloy in functional materials, and it is also an indispensable material in precision instruments and precision machinery. This type of alloy is widely used in the manufacture of various elastic connecting elements, such as pressure elastic contact pieces, heat-sensitive bimetallic elastic elements, conductive elastic connectors for relays, and various elastic elements used in aviation instruments. Their function is to produce force or moment, store energy, buffer vibration, serve as elastic connection and isolation medium, etc. [0003] Elastic alloys can be divided into: spring steel (including carbon...

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Problems solved by technology

[0006]However, during the high-temperature melting and casting process of copper-nickel-manganese alloy, it is very easy to absorb gas, resulting in a large number of defects such as pores, inclusions, and looseness inside the ingot. It is easy to crack during the rolling process and has not been well applied so far

Chinese patent application (application number: 200910309818) about the preparation method of copper-nickel-manganese-iron alloy is to make various alloys into powder, utilize vacuum high-temperature sintering, carry out solid solution aging to obtain alloy body after being cooled to room temperature with furnace, this method needs The raw material is made into powder, the preparation method is complex and demanding, the production efficiency is low, and the cost is high. The alloy ingot produced by this method is small and single in shape, which is not conducive to further processing and industrialization. Simple solution aging of the ingot, without further plastic processing, cannot give full play to the performance of the alloy, and the application of the product is very limited