Preparation method of tungsten-nickel-iron alloy material

Abstract

The invention discloses a preparation method of a tungsten-nickel-iron alloy material. The preparation method comprises the following steps: putting tungsten powder, nickel powder and iron powder intoa ball mill, carrying out wet ball milling, and carrying out drying to obtain mixed powder; adding polyvinylpyrrolidone into absolute ethyl alcohol, then adding the product into the mixed powder, carrying out uniform stirring, putting the mixture into a mold, and carrying out pressing at a constant temperature to form pressing plates; soaking the first pressing plates in absolute ethyl alcohol, carrying out microwave vibration for 2-5 h, then taking out the first pressing plates, washing the first pressing plates with absolute ethyl alcohol, and carrying out drying to obtain porous plates; carrying out oil pressure pressing on a plurality of porous plates, thus a green body is formed, placing the green body into a sintering furnace for liquid-phase sintering, and thus a prefabricated alloy plate is obtained; and spraying the mixed powder on the surface of the prefabricated alloy plate, carrying out rolling pressing treatment, carrying out surface flame spraying treatment for 10-20 min, so that a rough alloy plate is obtained, and carrying out polishing to obtain the tungsten-nickel-iron alloy plate. With the preparation method, the problem of low processing yield in the prior artis solved, by utilizing a layer-staggered filling pressing method of the porous plates, the pressing efficiency is improved, the pressing difficulty is effectively reduced, and meanwhile, a forming agent is not needed.

Description

technical field [0001] The invention belongs to the field of alloys, and in particular relates to a preparation method of a tungsten-nickel-iron alloy material. Background technique [0002] Tungsten-nickel-iron alloy is an alloy composed of tungsten as the matrix (the tungsten content is 85%-98%), and a small amount of Ni and Fe are added. Its density is as high as 16.5-19.0g / cm 3 , Also known as heavy alloys or high-density alloys. Tungsten-nickel-iron alloy has a series of excellent physical and mechanical properties and serviceability such as high density, high strength and hardness, good electrical conductivity and thermal conductivity, small thermal expansion coefficient, good corrosion resistance and oxidation resistance, good machinability and weldability, etc. Therefore, tungsten-nickel-iron alloy has been widely used in national defense industry and civilian industry, especially W-Ni-Fe alloy is used as a strong damage warhead material in the national defense indu...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a preparation method of tungsten-nickel-iron alloy material, which solves the problem of low processing yield in the existing process, and uses the staggered layer filling and pressing method of the porous plate to fill the gaps to achieve lifting and pressing Efficiency, effectively reduces the difficulty of pressing, and does not require the use of molding agents