Metal powder injection molding (MIM) production process for fragile tungsten-nickel-iron alloy material

Abstract

The invention discloses a metal powder injection molding (MIM) production process for a fragile tungsten-nickel-iron alloy material. The fragile tungsten-nickel-iron alloy material comprises 97% of tungsten, 1%-1.5% of nickel and 1.5%-2% of iron. The technological process comprises an injection technology, an extraction technology, a degreasing technology, a sintering technology, a solid solution technology and a roll polishing technology. Compared with a traditional tungsten-based alloy material product, new equipment does not need to be added, and on the premise that the hardness of the tungsten-based alloy is guaranteed, the fragile brittleness is achieved, the fluidity is good, and injection molding is facilitated. In the whole technological process, technological parameters are easy to control, all procedure equipment used in a conventional metal powder injection molding technology can meet the requirements, batch production is easy, and highly sophisticated is not needed for guarantee.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to the MIM production process of fragile tungsten-nickel-iron alloy material powder injection molding. Background technique [0002] At present, the brittle projectile materials researched at home and abroad mainly use high-strength, high-density brittle tungsten alloys, which are broken by tensile waves when they hit the target by controlling their dynamic tensile and compressive strength ratios. In addition to meeting the material properties required by conventional kinetic energy armor-piercing projectiles, high-density brittle tungsten alloys also have the potential to achieve a fragmentation effect, which can be preferentially used as materials for frangible armor-piercing projectiles. Therefore, research on brittle projectiles is mainly focused on improving, To improve the performance of tungsten alloy; frangible ammunition is a new concept weapon proposed in recent year...

AI Technical Summary

Problems solved by technology

[0004] 1. The armor-piercing frangible bullets made of tungsten alloy materials produced by traditional powder metallurgy, casting processing and other production processes have good penetration and penetration capabilities, are not easy to break, and in narrow spaces and densely populated environments, traditional Tungsten alloy armor-piercing projectiles are more prone to over-penetration, causing secondary damage to building structures or people

2. The size of products produced by traditional powder metallurgy, casting processing and other production processes does not meet the ellipticity tolerance requirements, and does not have mass production

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