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A kind of copper alloy material and preparation method thereof

A drug-type mask and copper alloy technology, which is applied in the field of metal materials, can solve the problems of the mismatch between the diameter of the reaming hole and the penetration depth, and the lack of research on the impact of reaming, so as to improve the uniformity and performance consistency and improve the purity. , the effect of high purity

Active Publication Date: 2019-08-13
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The country is still in the stage of tracking and imitating. The focus of the research is on the structural simulation, charge matching and test assessment of the shaped energy jet liner. The main material of the liner is pure copper. A large number of in-depth studies have been made on the relationship between particle size, morphology, grain boundary, etc.), manufacturing process and armor-breaking performance; there is no drug-type cover material for penetrating and destroying heterogeneous targets such as reinforced concrete and rock-soil layers , as well as the matching of the reaming aperture and penetration depth of the pre-stage drug mask, and the influence of the drug mask material's own characteristics on the reaming are less studied
Most of the front-stage drug cover materials for series penetration warheads are made of pure copper, and the reaming aperture does not match the penetration depth

Method used

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  • A kind of copper alloy material and preparation method thereof
  • A kind of copper alloy material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Powder preparation: Commercial electrolytic copper powder (650 mesh), zinc powder (325 mesh) and aluminum powder (200 mesh) are used, and the powder purity reaches 99.9%.

[0034] (2) Powder mixing and compacting: According to a certain composition ratio (mass fraction, as shown in Table 1), the three powders are evenly mixed, and pressed to produce a billet with a specification of φ90×500mm.

[0035] Table 1 Copper alloy powder composition ratio (wt.%)

[0036] powder name copper powder Zinc powder Aluminum powder Remark quality score 68％ 20％ 12％

[0037] (3) Pre-sintering: use a nitrogen atmosphere to protect the furnace, sinter at 520 ° C for 2 hours, and then cool to 80 ° C with the furnace to obtain a prefabricated billet with a certain strength.

[0038] (4) Vacuum electron beam smelting: the prefabricated billet in step (3) is purified and homogenized by vacuum secondary electron beam smelting, and the vacuum degree of the sme...

Embodiment 2

[0047] (1) Powder preparation: Commercial electrolytic copper powder (800 mesh), zinc powder (400 mesh), and aluminum powder (270 mesh) are used, and the powder purity reaches 99.9%.

[0048] (2) Powder mixing and compacting: According to a certain composition ratio (mass fraction, as shown in Table 3), the three powders are mixed evenly, and pressed to produce a billet with a specification of φ100×500mm.

[0049] Table 3 Copper alloy powder composition ratio (wt.%)

[0050] powder name copper powder Zinc powder Aluminum powder Remark quality score 65％ 25％ 10％

[0051] (3) Pre-sintering: Use a nitrogen atmosphere to protect the furnace, sinter at 500°C for 2 hours, and then cool to 80°C with the furnace to obtain a prefabricated billet with a certain strength.

[0052] (4) Vacuum electron beam smelting: the prefabricated billet in step (3) is purified and homogenized by vacuum secondary electron beam smelting, and the vacuum degree of the smelt...

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Abstract

The invention provides a copper alloy material for a large-expanded-hole shaped charge liner and a preparation method thereof. Copper powder, zinc powder and aluminum powder are adopted as raw materials, powder-compacting sintering smelting is adopted, vacuum electron-beam smelting is adopted, and the vacuum degree is not lower than 2*10<-3> Pa. The density of the prepared copper alloy material is6-7 g / cm3, the ductility is high, and compared with a traditional pure-copper shaped charge liner material, the high penetration depth is kept, the diameter of expanded holes is enlarged, and penetration power of the shaped charge liner is improved.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a copper alloy material for large-hole-expanding drug-type covers and a preparation method thereof. Background technique [0002] In modern warfare, the survival of important military facilities such as underground command posts and arsenals is directly related to the direction of the war. In order to deal with such solid targets, ground-penetrating bombs for attacking underground targets have been developed since the eighties of last century. Ground penetrating projectiles mainly have kinetic energy penetrating warheads and series penetrating warheads. Among them, the front-stage openings of the series penetrating warheads do not require high impact angles, good ballistic adaptability, and low speed requirements. The key development direction of a military power. [0003] The tandem penetrating warhead first uses the high-speed jet (velocity up to 6000m / s) generated by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22C1/03C22F1/08C22C1/04
CPCC22C1/03C22C1/0425C22C9/04C22F1/08
Inventor 夏祥生舒大禹胡传凯康凤林军吴洋李辉赵强
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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