Fragile armor-piercing shell W alloy and preparation method thereof

A technology of armor-piercing projectiles and tungsten alloys, which is applied in the field of alloys, can solve the problems of difficult secondary blasting, low compressive strength, and insufficient effects, and achieve good plasticity, reduce tensile strength, and improve fragility

Inactive Publication Date: 2018-08-21
江西澳科新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the present invention are: (1) the compressive strength of the fine-grained W-Ni-Fe alloy containing a trace amount of rare earth is low, and it is difficult to realize secondary blasting as a preparation material for armor-piercing projectiles; (2) the fine-grained W-Ni-Fe alloy containing a trace amount of rare earth The tensile strength of Fe alloy is 1000-1300MPa, and the armor-piercing projectile exceeding 1000MPa cannot achieve the expected effect in the secondary blasting, and the effect of the later explosion is not enough.

Method used

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  • Fragile armor-piercing shell W alloy and preparation method thereof
  • Fragile armor-piercing shell W alloy and preparation method thereof
  • Fragile armor-piercing shell W alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] By weight percentage:

[0039] W powder 97.8%, Fibonacci particle size 3.0μm, purity 99.9%;

[0040] Ni powder 1.1%, Fischer particle size 3.66μm, purity 99.5%;

[0041] The Fe powder is 1.1%, the Fibonacci particle size is 3.97μm, and the purity is 99.3%.

[0042] Mix the above powders into a three-dimensional mixer for mixing, and then ball mill in a steel ball mill cylinder. The ball milling medium is anhydrous alcohol, the balls for ball milling are hard alloy balls, the ball-to-material ratio is 2:1, and the ball milling time is 10 hours. , the speed is 300r / min.

[0043] Dry the wet-mixed slurry in a vacuum drying oven at a drying temperature of 100-120° C. for 2 hours, and pass through an 80-mesh sieve after drying.

[0044] Add additive, additive selects paraffin gasoline solution for use, dissolves 10g paraffin wax preparation solution with 50ml gasoline, during the addition amount, 100g raw material powder is mixed with paraffin wax 2g.

[0045] Dry and si...

Embodiment 2

[0052] By weight percentage:

[0053] W powder 97%, Fischer particle size 3.0μm, purity 99.9%;

[0054] Ni powder 1.1%, Fischer particle size 3.66μm, purity 99.5%;

[0055] Fe powder 1.1%, Fibonacci particle size 3.97μm, purity 99.3%;

[0056] Re powder 0.8%, Fibonacci particle size 3.54μm, purity 99.99%.

[0057] Mix the above powders into a three-dimensional mixer for mixing, and then ball mill in a steel ball mill cylinder. The ball milling medium is anhydrous alcohol, the balls for ball milling are hard alloy balls, the ball-to-material ratio is 2:1, and the ball milling time is 10 hours. , the speed is 300r / min.

[0058] Dry the wet-mixed slurry in a vacuum drying oven at a drying temperature of 100-120° C. for 2 hours, and pass through an 80-mesh sieve after drying.

[0059] Add additive, additive selects paraffin gasoline solution for use, dissolves 10g paraffin wax preparation solution with 50ml gasoline, during the addition amount, 100g raw material powder is mixe...

Embodiment 3

[0064] By weight percentage:

[0065] W powder 97%, Fischer particle size 3.0μm, purity 99.9%;

[0066] Ni powder 1.1%, Fischer particle size 3.66μm, purity 99.5%;

[0067] Fe powder 1.1%, Fibonacci particle size 3.97μm, purity 99.3%;

[0068] Re powder 0.8%, Fibonacci particle size 3.54μm, purity 99.99%.

[0069] Add the mixed powder into Al according to the weight ratio of 3% 2 o 3 , Al 2 o 3 The diameter of the powder is 0.67μm, and the above powder is mixed into a three-dimensional mixer for mixing, and then ball milled in a steel ball mill cylinder. The ball milling medium is anhydrous alcohol, and the balls for ball milling are cemented carbide balls. : 1, the ball milling time is 10h, and the rotating speed is 300r / min.

[0070] Dry the wet-mixed slurry in a vacuum drying oven at a drying temperature of 100-120° C. for 2 hours, and pass through an 80-mesh sieve after drying.

[0071] Add additive, additive selects paraffin gasoline solution for use, dissolves 10...

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Abstract

The invention discloses a fragile armor-piercing shell W alloy and a preparation method thereof. The W alloy is prepared by mixing and sintering W powder, Ni powder, Fe powder and Re powder. The preparation method comprises the following steps: wet mixing; primary drying and screening; doping with wax; secondary drying and screening; shaping; dewaxing / pre-sintering; sintering; and heat treatment after sintering. The added Re powder serves as a more effective solution strengthening element, so that the density of the W alloy can be improved to a certain extent and the relatively high plasticitycan be kept; through the addition of Al2O3 powder of different grain sizes, the tensile strength can be reduced under the precondition that the dynamic compression strength and plasticity of the W alloy are guaranteed, and the fragility of the W alloy can be improved; and accordingly, fragments can be formed after the W alloy pierces armor, and then the purpose of secondary damage can be fulfilled.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a fragile tungsten alloy for armor-piercing bullets and a preparation method thereof. Background technique [0002] Because of the advantages of high density and high strength, tungsten-based alloys occupy an important position in modern industry, especially in the defense industry. With the development of industry, people put forward higher requirements for its performance. [0003] Armor-piercing projectiles require the core material to be automatically broken into a large number of effective fragments by relying on the interaction between the projectile and the target and its own performance characteristics during the target-piercing process. Penetration and secondary damage effects on body and light armored vehicles. In order to ensure the launch strength and sufficient penetration ability of the core material, the core material should have a sufficiently high dynamic compres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C1/04
CPCC22C1/045C22C27/04B22F2998/10B22F1/14B22F2003/248B22F2003/1054B22F3/1021B22F3/02B22F2009/043B22F2003/1051
Inventor 谢椿云吴涛吴九全李苏
Owner 江西澳科新材料科技股份有限公司
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