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Tungsten heavy alloy for armour-piercing projectile core and preparing method thereof

A heavy alloy, armor-piercing projectile technology, applied in the direction of ammunition, warheads, offensive equipment, etc., can solve the problems of impurity segregation, unstable performance, incomplete reduction of solubility oxides, etc., to achieve the effect of stable performance

Inactive Publication Date: 2003-11-12
戴汉臣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, tungsten heavy alloys for armor-piercing projectile cores still have many unstable defects such as impurity segregation, hydrogen embrittlement, pre

Method used

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  • Tungsten heavy alloy for armour-piercing projectile core and preparing method thereof
  • Tungsten heavy alloy for armour-piercing projectile core and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Put the following raw materials in the following weight ratio: 0.6 parts of manganese acetate, 6.75 parts of nickel nitrate, 2.25 parts of iron nitrate, 0.67 parts of rare earth nitrate, put them in a stainless steel container, dissolve them with pure water, pour the aqueous solution into a container containing blue tungsten oxide Stir and mix in 90 parts of stainless steel barrels, inject the mixture into the spray drying tower for spray drying at 200°C, the dried powder is reduced in a hydrogen furnace at 700°C, and the composite powder obtained after reduction is placed in a tiltable Add ethanol and grind for 6 hours to unload, then dry and sieve in a drying pot at a temperature of 100°C, add polyethylene propylene with a concentration of 20% as a molding agent, and the solid content of the composite powder and the molding agent The liquid ratio (weight ratio) is 1:0.08, and the pressure is 0.8 tons / cm 2 under the conditions of vacuum pressure of 10Pa, temperature of...

example 2

[0021] The raw materials with the following weight proportions: 0.5 parts of manganese acetate, 4.73 parts of nickel nitrate, 1.58 parts of iron nitrate, 0.57 parts of rare earth nitrate, and 93 parts of blue tungsten oxide were placed in a spray drying tower and dried at 250 °C. 1.0 tons / cm 2 Next, mold it with a hydraulic press; then place the briquette in a boat of zirconia or alumina, sinter at a vacuum of 40Pa, at a sintering temperature of 1470°C, for a holding time of 50 minutes, and the rest are the same as in Example 1.

example 3

[0023] The weight ratio of raw materials is: 0.5 parts of manganese acetate, 4 parts of nickel nitrate, 1 part of iron nitrate, 0.55 parts of rare earth nitrate, 97 parts of blue tungsten oxide, the drying temperature in the spray drying tower is 300 ℃, and the pressure is 1.2 tons / cm 2 , sintering temperature 1480 ℃, holding time 60 minutes, all the other with example 1.

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Abstract

The present invention is aimed at providing a wolfram heavy alloy for improving armor-piercing projectile core and its preparation method. Said invention is characterized by that it is formed from blue wolfram oxide, iron nitrate, nickel nitrate, manganese acetate and rare earth nitrate according to weight mixing ratio of 90-97 portions, 1-7 portions, 1-8 portions, 0.5-2 portions and 0.5-2 portions successively. Its preparation method includes three steps of mixture preparation, press-forming and vacuum sintering.

Description

technical field [0001] The invention relates to a tungsten heavy alloy for armor-piercing bullet cores and a preparation method thereof, belonging to the tungsten-based alloy category. Background technique [0002] Tungsten heavy alloy is a material with high density, high strength, high ductility and minimal chemical activity. Using this tungsten heavy alloy to manufacture kinetic energy armor-piercing projectile cores can greatly improve the lethality of armor-piercing projectiles. [0003] The United States began to study tungsten and uranium alloys for armor-piercing projectile cores in the 1960s, but depleted uranium bombs were seriously polluted and their use was prohibited. my country began to study tungsten heavy alloys in the early 1960s, and met the scientific and technological requirements in terms of theory, production technology and quality. The needs of development, the application range is also very wide, the current domestic density is less than 15g / cm 3 YK ...

Claims

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Application Information

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IPC IPC(8): C22C1/04C22C27/04F42B12/74
Inventor 戴汉臣薛鉴熊裕德
Owner 戴汉臣
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