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Novel tungsten alloy material and preparation method thereof

A tungsten alloy, a new type of technology, applied in the field of alloys, can solve problems such as easy damage, and achieve the effects of improving creep resistance, sintering density and mature technology

Inactive Publication Date: 2018-07-24
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

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Problems solved by technology

And it is necessary to ensure that the tungsten alloy projectile cannot be damaged after penetration, and ensure that blasting occurs after penetration. The high-density tungsten alloy projectile is split into four sections after penetration, and the middle part of the projectile is obviously damaged. Therefore, although increasing the density of tungsten alloy can enhance the penetration ability of the projectile, it is more prone to damage during the penetration process.

Method used

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  • Novel tungsten alloy material and preparation method thereof
  • Novel tungsten alloy material and preparation method thereof
  • Novel tungsten alloy material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Mix according to the mass fraction ratio of tungsten matrix, carbonyl Ni and carbonyl Fe at a ratio of 80%: 28%: 12%. Under the protection of absolute ethanol, mix evenly by ball milling for 10h-20h, and the mass ratio of ball milling is 5:1 , speed 250r / min.

[0045] Isostatic pressing, the ball-milled mixed powder is vacuum-dried and then isostatic pressing, and the pressing pressure is 250MPa.

[0046]For sintering, place the pressed tungsten alloy in a sintering furnace for sintering, raise the temperature to 900°C at a heating rate of 450°C / h, keep it at 900°C for 4 hours, and then raise the temperature from 900°C to 1400°C , the heating rate is 75°C / h, and the heat preservation is 4h. The sintering process during this period is a solid phase sintering process; then the temperature is raised from 1400°C to 1440°C, the heating rate is 40°C / h, and the heat preservation is 1h. The sintering process during this period is It is a liquid phase sintering process; the abo...

Embodiment 2

[0048] According to the mass fraction ratio of tungsten matrix, carbonyl Ni and carbonyl Fe, they are mixed in the ratio of 65%: 24.5%: 10.5%. Under the protection of absolute ethanol, they are mixed evenly by ball milling for 10h-20h, and the mass ratio of ball milling is 5:1. , speed 250r / min.

[0049] Isostatic pressing, the ball-milled mixed powder is vacuum-dried and then isostatic pressing, and the pressing pressure is 250MPa.

[0050] For sintering, place the pressed tungsten alloy in a sintering furnace for sintering, raise the temperature to 900°C at a heating rate of 450°C / h, keep it at 900°C for 4 hours, and then raise the temperature from 900°C to 1400°C , the heating rate is 75°C / h, and the heat preservation is 4h. The sintering process during this period is a solid phase sintering process; then the temperature is raised from 1400°C to 1440°C, the heating rate is 40°C / h, and the heat preservation is 1h. The sintering process during this period is It is a liquid p...

Embodiment 3

[0052] Mix according to the mass fraction ratio of tungsten matrix, carbonyl Ni and carbonyl Fe at a ratio of 70%:21%:9%. Under the protection of absolute ethanol, mix evenly by ball milling for 10h-20h, and the mass ratio of ball milling is 5:1 , speed 250r / min.

[0053] Isostatic pressing, the ball-milled mixed powder is vacuum-dried and then isostatic pressing, and the pressing pressure is 250MPa.

[0054] For sintering, place the pressed tungsten alloy in a sintering furnace for sintering, raise the temperature to 900°C at a heating rate of 450°C / h, keep it at 900°C for 4 hours, and then raise the temperature from 900°C to 1400°C , the heating rate is 75°C / h, and the heat preservation is 4h. The sintering process during this period is a solid phase sintering process; then the temperature is raised from 1400°C to 1440°C, the heating rate is 40°C / h, and the heat preservation is 1h. The sintering process during this period is It is a liquid phase sintering process; the above...

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Abstract

The invention discloses a novel tungsten alloy material and a preparation method thereof. The novel tungsten alloy material is composed of a tungsten matrix, carbonyl Ni and carbonyl Fe. The preparation method adopts a solid phase sintering process and a liquid phase sintering process, and the technological process includes: mixing, ball milling, isostatic pressing and sintering. The tungsten alloy has high strength, good plasticity, strong impact toughness and penetration ability, the sintering temperature and sintering time are controlled to inhibit the growth of crystal grains and improve the structure uniformity so as to improve comprehensive mechanical properties. The prepared low density tungsten alloy projectile cannot be destroyed after penetration, and is suitable to serve as a projectile body preparation material.

Description

technical field [0001] The invention relates to the field of alloy technology, in particular to a novel tungsten alloy material and a preparation method thereof. Background technique [0002] Tungsten alloy has excellent properties such as high density, high strength, and strong plasticity, and is currently the main material for preparing kinetic energy armor-piercing projectiles. Compared with grenades, traditional tungsten alloy kinetic energy armor-piercing projectiles have stronger axial destructive characteristics, but have no good killing effect on the target. The characteristic of this low-density material is that it has a lower density than traditional tungsten alloys, with a density of 9-12g / cm 3 .High toughness, tensile strength 600-800MPa, elongation greater than 30%. [0003] Low-density tungsten alloy has the armor-piercing performance of tungsten alloy, and its super toughness and elongation can better withstand the blast-driven force of explosives. It is dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C1/04
CPCC22C27/04C22C1/045
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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