A kind of preparation method of high-strength wear-resistant alloy cu-15ni-8sn

Abstract

The invention discloses a preparation method for a high-strength wear-resistant alloy Cu-15Ni-8Sn. The process comprises the following steps: adding electrolytic copper and nickel; pouring the electrolytic copper and nickel in an intermediate-frequency coreless induction furnace; adding charcoal; charging nitrogen gas with one barometric pressure; melting; melting for 30-65 minutes at 1300-1350 DEG C; adding tin and melting at 1250-1300 DEG C; adding a refiner and a deoxidizer; stirring; adding a grain refiner; adding a modifier; slagging off; carrying out inspection before melting; carrying out electromagnetic casting after ingredients are qualified; cutting a head and a tail; scalping; carrying out ingredient inspection after melting; carrying out organization structure analysis; and carrying out performance detection. A Cu-15Ni-8SnC72900 alloy melt and cast by virtue of the intermediate-frequency coreless induction furnace, which is obtained by the preparation method disclosed by the invention, is low in production cost; and the developed products are high in quality. The developed products can be applied to national defense and military industry, ocean engineering and high-end preparation manufacturing industry; and the increasingly urgent needs of the national defense and military industry, ocean engineering and high-end preparation manufacturing industry on high-performance copper alloy materials are met.

Description

technical field

[0001] The invention belongs to the technical field of alloy preparation, and in particular relates to a method for preparing a high-strength wear-resistant tin-nickel-nickel alloy Cu-15Ni-8Sn produced by an intermediate frequency melting furnace and an electromagnetic casting method. Background technique

[0002] C72900 alloy is the grade in the American standard, and the Chinese grade is expressed as Cu-15Ni-8Sn. This alloy has high strength, high hardness, high elasticity, high toughness, high conductivity stability, excellent wear resistance and corrosion resistance. It has good stress relaxation resistance and the ability to maintain stable shape at high temperature, no deformation and little stress relaxation, and is gradually replacing the use of beryllium bronze. Domestically, C72900 alloy is mainly used in national defense military industry, ocean engineering, and high-end preparation manufacturing industry to solve the increasingly urgent demand for...