Material-increasing manufacturing method for easy-to-segregate high-elasticity Cu-Ni-Sn alloy

Abstract

The invention belongs to the technical field of preparation of easy-to-segregate high-elasticity Cu-Ni-Sn alloy materials, and particularly relates to a material-increasing manufacturing method for aneasy-to-segregate high-elasticity Cu-Ni-Sn alloy. According to the material-increasing manufacturing method for the easy-to-segregate high-elasticity Cu-Ni-Sn alloy, dried Cu-Ni-Sn alloy powder prepared through gas atomization is subjected to material-increasing manufacturing by adopting a material-increasing manufacturing technology and reasonably setting technological parameters so as to obtaina sample material with the homogeneous microstructure, fine crystal grains and the high strength. By adopting the technical scheme, the material-increasing manufacturing method has the advantages that the process is simple and reliable, the alloy composition is controllable, the material-increasing manufacturing method is suitable for production of parts with the complex shapes, high-temperatureand long-time solid solution treatment is not required, the processing cost is low, operation is flexible, and the adaptability is high.

Description

technical field [0001] The invention belongs to the technical field of preparation of Cu-Ni-Sn alloy materials with high elasticity and easy segregation, and proposes a process method for preparing alloy materials by using gas-atomized alloy powder as a raw material and adopting high-energy beam laser or electron beam additive manufacturing technology. Background technique [0002] Cu-Ni-Sn alloy has high strength, high elasticity, excellent corrosion resistance, wear resistance and good electrical conductivity, as well as high thermal stability and high temperature strength, so it is an important functional material with good Prospects. It can be used to manufacture all kinds of heavy-duty bearings, support frames, signal switches, electrical connectors, relays and other components in the fields of aerospace, marine ships, electronic appliances, and communication engineering. With the development of industry, people's requirements for alloy properties are constantly improv...

AI Technical Summary

Problems solved by technology

Cu-Ni-Sn alloy due to the characteristics of the material itself: the addition of Ni element inhibits the solubility of Sn element in Cu, so that when the alloy is prepared by traditional smelting method, the Sn element in the ingot is prone to serious segregation. As a result, the uniformity of alloy composition and properties and subsequent pressure forming properties are affected, hindering its large-scale application in industry

The preparation methods of Cu-Ni-Sn alloy mainly include the following types: Vacuum smelting method, when preparing Cu-Ni-Sn alloy by vacuum smelting method, long-time high-temperature homogenization annealing is usually used to reduce the segregation of Sn elements, but this method is not only time-consuming and energy-consuming but also ineffective; Spray forming process, the alloy prepared by this method has many pores and low density, and can only produce simple shape parts, the improvement of segregation is limited by the distance from the cold source, and a large amount of overspray powder will be produced, reducing the material utilization rate ; Powder metallurgy method, there are many intermediate processes in the preparation of alloys, and the production cost is high. Currently, it is only used for the production of individual simple profiles

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