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Forming method of aluminum-copper composite material shaped charge cover

A composite material and drug-type cover technology, applied in the field of composite material manufacturing, can solve the problems of non-dense material, low strength, high brittleness, etc., and achieve the effect of improving interface bonding force, ensuring tissue properties, and high ductility

Inactive Publication Date: 2019-10-11
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

[0004] According to the relevant literature, the preparation process of double-layer metal materials includes stack rolling, sheath extrusion, powder metallurgy sintering, vacuum brazing, etc. This process has the following disadvantages: First, the double-layer metal material prepared by the stack rolling process It is a physical combination with low strength, and it is easy to crack during the forming process of components with complex shapes (such as cones and curved surface space structures); the second is the sheathed extrusion double-layer metal product, which is suitable for bar processing, and it is difficult to control the ratio of metals in different parts Third, powder metallurgy low-temperature sintered materials have defects such as non-densification and holes, which are not suitable for liner covers; fourth, vacuum brazing has an intermediate filling layer, which is brittle and unfavorable for the penetration performance of liner covers

Method used

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  • Forming method of aluminum-copper composite material shaped charge cover
  • Forming method of aluminum-copper composite material shaped charge cover
  • Forming method of aluminum-copper composite material shaped charge cover

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A method for forming an aluminum-copper composite drug-type cover, using the following steps:

[0035] (1) The cold-extruded pure copper drug-shape blank (TU1) is subjected to recrystallization heat treatment at 320°C for 60 minutes, and the measured average grain size is (10-15) μm; on, follow figure 1 The shape and structure are processed by cutting. Taking 5 products as samples, the angle deviation of the outer taper is -1.2'~0.7', and the surface roughness is (0.42~0.68)μm.

[0036] (2) According to the inner size of the pure aluminum-copper composite drug-type cover, the copper rod is processed into a matching cold iron core mold ( figure 2 ), the surface roughness is 0.4μm, and the angle deviation is 0.2′, and it is assembled with the copper cone shell obtained in (1), and the bonding rate of the cone surface is 85% to 90% ( image 3 ).

[0037] (3) After melting the paraffin, pour out the shape and structure of the pure aluminum outer layer of the aluminum-co...

Embodiment 2

[0045] A method for forming an aluminum-copper composite drug-type cover, using the following steps:

[0046] (1) The cold-extruded pure copper drug-mold blank (T2) is subjected to recrystallization heat treatment at 350°C for 60 minutes, and the measured average grain size is (5-8) μm; in the CNC processing equipment on, follow figure 1 The shape and structure are cut and processed, taking 5 products as samples, the angle deviation of the outer taper is -0.9'~1', and the surface roughness is (0.34~0.52)μm.

[0047] (2) According to the inner size of the pure aluminum-copper composite drug-type cover, the copper rod is processed into a matching chilled iron mandrel with a surface roughness of 0.4 μm and an angle deviation of 0.2′, and (1) is obtained The copper cone shell is assembled, and the bonding rate of the two cone surfaces is 80% to 85%.

[0048] (3) After melting the paraffin, pour out the shape and structure of the pure aluminum outer layer of the aluminum-copper c...

Embodiment 3

[0056] A method for forming an aluminum-copper composite drug-type cover, using the following steps:

[0057] (1) The cold-extruded pure copper drug-mold blank (TU1) is subjected to recrystallization heat treatment at 300°C for 75 minutes, and the measured average grain size is (5-8) μm; on, follow figure 1 The shape and structure are processed by cutting. Taking 5 products as samples, the angle deviation of the outer taper is -1.2'~0.3', and the surface roughness is (0.52~0.73)μm.

[0058] (2) According to the inner size of the pure aluminum-copper composite drug-type cover, the copper rod is processed into a matching chilled iron mandrel with a surface roughness of 0.4 μm and an angle deviation of 0.2′, and (1) is obtained The copper cone shell is assembled, and the bonding rate of the two cone surfaces is 88% to 92%.

[0059] (3) After melting the paraffin, pour out the shape and structure of the pure aluminum outer layer of the aluminum-copper composite drug-type cover, ...

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Abstract

The invention provides a forming method of aluminum-copper composite material shaped charge cover and discloses the process steps and condition of the method in details. The technical effects that analuminum / copper interface bonding of the prepared aluminum-copper composite material shaped charge cover is good, metal proportions of different positions are distributed according to the design requirements, and the penetration damage aftereffect of an existing shaped charge cover is improved are achieved.

Description

technical field [0001] The invention relates to the technical field of composite material manufacturing, in particular to a method for forming an aluminum-copper composite medicine mold cover. Background technique [0002] The drug-shaped cover is the core component of the energy-gathering armor-piercing warhead and an important basis for supporting the development of a high-performance warhead. The material of the drug-shaped cover is one of the key factors determining the armor-piercing performance. As a key component of shaped charge warheads, liner covers have been developed for more than 50 years. 98% of armor-piercing projectile warheads in active service use pure copper liner covers. The drug-type cover made of copper rod, with an average grain size of 20 μm to 45 μm, can penetrate through a steel target (45 steel) 9 times the thickness of the charge diameter, but the jet exit aperture is less than φ15mm, and the final remaining jet The mass is less than 5% (compared...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16B22C9/04B22C9/24B23P15/22
CPCB22C9/043B22C9/24B22D19/16B23P15/22
Inventor 陈强舒大禹赵祖德吴洋詹红屈俊岑王长朋王茂川
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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