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Tungsten-cobalt-nickel alloy and preparation method and application thereof

A technology of nickel alloy and tungsten-cobalt, which is applied in the field of metallurgy, can solve the problems that tungsten alloy cannot satisfy the mechanical properties of elongation, reduction of area, tensile strength, and yield strength, etc., and achieve reduced solidification segregation, excellent strength, and uniform composition and structure. Effect

Inactive Publication Date: 2020-10-13
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing tungsten alloys cannot meet the requirements of related mechanical properties such as elongation, reduction of area, tensile strength, yield strength, etc.

Method used

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  • Tungsten-cobalt-nickel alloy and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This application provides a high-quality, large-density, high-tungsten, high-cobalt-nickel alloy, the chemical composition of which is 39% tungsten, 20% cobalt and 41% nickel by mass percentage;

[0061] Prepare materials according to the above alloy composition, melt and pour the alloy raw materials into electrode ingots with a diameter of 240 mm in a vacuum induction furnace;

[0062] Cut off the head and tail of the electrode ingot, and polish the surface to reveal the metallic luster; weld the auxiliary electrode and bake it in a heating furnace at 250°C for 3 hours to remove water vapor; wipe the surface of the electrode with a clean rag to clean oil and oxides after leaving the furnace and air cooling and other foreign objects;

[0063] Put the treated electrode in the vacuum consumable furnace, complete the furnace loading, centering, sealing and other operations, feed the cooling water flow rate of 650 mL / min, vacuumize to 0.15 Pa, and detect the air leakage rat...

Embodiment 2

[0072] This application provides a high-quality, high-density, high-tungsten, high-cobalt-nickel alloy, the chemical composition of which is 35% tungsten, 22% cobalt and 43% nickel by mass percentage;

[0073] Prepare materials according to the above alloy composition, melt and pour the alloy raw materials into electrode ingots with a diameter of 250 mm in a vacuum induction furnace;

[0074] Cut off the head and tail of the electrode ingot, and polish the surface to reveal the metallic luster; weld the auxiliary electrode and bake it in a heating furnace at 220°C for 3.5 hours to remove water vapor; wipe the surface of the electrode with a clean rag to clean oil and oxidation after leaving the furnace and air cooling Foreign objects such as objects;

[0075] Put the processed electrode in the vacuum consumable furnace, complete the furnace loading, centering, sealing and other operations, feed the cooling water flow rate of 750 mL / min, vacuumize to 0.20 Pa, and detect the air...

Embodiment 3

[0084] This application provides a high-quality, large-density, high-tungsten, high-cobalt-nickel alloy, the chemical composition of which is 42% tungsten, 16% cobalt and 42% nickel by mass percentage;

[0085] Prepare materials according to the above alloy composition, melt and pour the alloy raw materials into electrode ingots with a diameter of 220 mm in a vacuum induction furnace;

[0086] Cut the head and tail of the electrode ingot, and polish the surface to reveal the metallic luster; weld the auxiliary electrode and bake it in a heating furnace at 280°C for 3 hours to remove water vapor; wipe the surface of the electrode with a clean rag to clean oil and oxidation after leaving the furnace and air cooling Foreign objects such as objects;

[0087] Put the treated electrode in the vacuum consumable furnace, complete the furnace loading, centering, sealing and other operations, feed the cooling water flow rate of 600 mL / min, vacuumize to 0.10 Pa, and detect the air leakag...

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Abstract

The invention provides a tungsten-cobalt-nickel alloy and a preparation method and application thereof. The tungsten-cobalt-nickel alloy is prepared from the raw materials in percentage by mass: 30-45% of tungsten, 15-25% of cobalt and 30-55% of nickel. The preparation method of the tungsten-cobalt-nickel alloy comprises the steps: the raw materials of the tungsten-cobalt-nickel alloy are processed into an electrode ingot, and then the electrode ingot is treated to obtain a vacuum consumable electrode; and the vacuum consumable electrode is mounted into a consumable electrode vacuum furnace tobe smelted to obtain the tungsten-cobalt-nickel alloy. The tungsten-cobalt-nickel alloy is applied to weapon manufacturing. According to the tungsten-cobalt-nickel alloy provided by the invention, harmful gas elements such as oxygen, nitrogen and hydrogen and nonmetallic inclusions are deeply removed, meanwhile loose shrinkage holes in an as-cast alloy are further eliminated, solidification segregation is reduced, and purification and homogenization levels of the alloy are greatly improved.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a tungsten-cobalt-nickel alloy and a preparation method and application thereof. Background technique [0002] The powder cover is an important component of the hollow charge warhead. The energy-gathering effect produced by the explosive explosion can quickly crush it and deform it into a metal jet with extremely high speed and penetration ability, so as to achieve the combat purpose of attacking armor . Tungsten alloy is a metal material for warhead with low cost and good penetration performance. It has the advantages of high density, high strength and hardness, good plasticity and mechanical properties, and is widely used in national defense construction and military industry. In view of the requirements of alloys in terms of strength, plasticity and processing performance, the alloy base material is required to have ultra-high purity and extremely high homogenization level. [0003...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C19/03C22C1/02
CPCC22C1/02C22C1/023C22C19/03C22C30/00
Inventor 郑磊杨树峰赵朋杨曙磊曹方王宁徐志强
Owner UNIV OF SCI & TECH BEIJING
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