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Low-temperature preparation method of fine-grained material for drug-type cap

A drug-type cover and fine-grained technology, which is applied to explosive charges, offensive equipment, weapon accessories, etc., can solve the problems of difficulty in consistent control of process parameters, strict quality requirements, and lengthy procedures, and achieve industrial production and extrusion. The effect of small compression deformation force and overcoming the uneven distribution of grain structure

Active Publication Date: 2019-05-10
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] The grain size of the drug-type cover material manufactured by the new process technology is small and uniform, which can improve the penetration ability of the jet, but these technologies still have the following shortcomings: first, the process is lengthy, and the consistency of process parameters is difficult to control; second, it is suitable for ultra-low temperature environments The lubricant used for lower forming is less, and the price is expensive; the third is that the quality requirements of forming molds, equipment, and lubricants are strict in the ultra-low temperature environment;

Method used

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  • Low-temperature preparation method of fine-grained material for drug-type cap
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  • Low-temperature preparation method of fine-grained material for drug-type cap

Examples

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Effect test

Embodiment 1

[0030] Taking a typical double-cone copper liner as an example, the liner has a diameter of φ88mm, a height of 84mm, an inner cone depth of 82mm, and a variable wall thickness of ≤2.5mm.

[0031] (1) Preparation of blanks: According to the theory of plastic forming and the principle of near-uniform plastic deformation, a certain machining allowance is considered on the outer surface of the medicine cover when designing the structure, and a φ25mm forming process boss is designed on the cone top of the medicine cover. ;Using UG and DEFORM software to simulate, analyze and optimize the forming process, and calculate the volume of the billet, select the extruded T2 copper rod of φ60mm as the raw material, blank the material and turn the outer surface to make a billet with a diameter of 58mm and a length of 80mm; The content of impurity elements in T2 copper rods is shown in Table 1:

[0032] Table 1 Content of impurity elements in T2 copper rods

[0033]

[0034] (2) Homogeniz...

Embodiment 2

[0038]Taking a typical single-cone copper liner as an example, the liner has a diameter of φ60mm, a height of 45mm, an inner cone depth of 44.2mm, and a wall thickness of 1mm.

[0039] (1) Preparation of blanks: According to the theory of plastic forming and the principle of near-uniform plastic deformation, a certain machining allowance is considered on the outer surface of the medicine cover when designing the structure, and a φ16mm forming process boss is designed on the cone top of the medicine cover. ;Use UG and DEFORM software to simulate, analyze and optimize the forming process, and calculate the volume of the billet, select the extruded T2 copper rod with a diameter of 50mm as the raw material, cut the material and turn the outer surface to make a billet with a diameter of 48mm and a length of 50mm; The content of impurity elements in T2 copper rods is shown in Table 1:

[0040] Table 1 Content of impurity elements in T2 copper rods

[0041]

[0042] (2) Homogeniz...

Embodiment 3

[0046] Taking a typical single-cone copper liner as an example, the liner has a diameter of φ100mm, a height of 94mm, an inner cone depth of 92.6mm, and a wall thickness of variable wall thickness ≤ 2.8mm.

[0047] (1) Preparation of blanks: According to the theory of plastic forming and the principle of near-uniform plastic deformation, a certain machining allowance is considered on the outer surface of the medicine cover when designing the structure, and a φ25mm forming process boss is designed on the cone top of the medicine cover. ;Using UG and DEFORM software to simulate, analyze and optimize the forming process, and calculate the volume of the billet, select the extruded T2 copper rod of φ90mm as the raw material, blank the material and turn the outer surface to make a billet with a diameter of 88mm and a length of 80mm; The content of impurity elements in T2 copper rods is shown in Table 1:

[0048] Table 1 Content of impurity elements in T2 copper rods

[0049]

[...

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Abstract

The invention belongs to the technical field of metal plastic making, and provides a low-temperature preparation method for a fine grain material of a shaped charge liner. The low-temperature preparation method specifically comprises the following steps that firstly, a blank is prepared; secondly, the prepared blank is subjected to homogenizing annealing treatment; thirdly, the blank obtained in the second step is put into a die cavity of a static hydraulic composite extrusion die, and static hydraulic composite extrusion treatment is carried out; and fourthly, recrystallization annealing treatment is carried out. According to the preparation method, the material which is of a uniform and fine grain structure and can be used for the shaped charge liner can be obtained, and meanwhile the preparation method has the beneficial effects that the production efficiency is high, the process stability is good, and industrial production can be easily achieved.

Description

technical field [0001] The invention relates to metal plastic forming technology, in particular to the field of widely used preparation technology of drug-type mask materials such as copper, nickel, iron, aluminum, etc., and in particular to a low-temperature preparation method of drug-type mask fine-grained materials. Background technique [0002] A typical shaped charge jet has a high head velocity and a low tail velocity, and this velocity gradient makes the jet drawn very long at a considerable blast height. The penetrating ability of the jet is proportional to the length of the continuous jet, but the length of the continuous jet is limited because the jet eventually breaks into segments of particles in the axial direction. Once the jet breaks into particles, its penetrating ability decreases. Research institutions at home and abroad have done a lot of in-depth research on the relationship between the internal structure of the drug-shaped mask, the manufacturing proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/00C22F1/08
CPCF42B1/032
Inventor 舒大禹陈强黄树海赵志翔王艳彬张帷李辉
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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