Deep conical copper shaped charge liner tissue ultrafine crystallization gradient control method

A control method and a technology of a drug-type cover, which are applied to explosive charges, weapon accessories, offensive equipment, etc., can solve the problem of high cost of nanocrystalline drug-type cover, low yield of nanocrystalline materials, and large anisotropy of rolled sheets. and other problems, to achieve the effect of effective control, improvement of material utilization, and gradient of grain structure
CN108517477AActive Publication Date: 2018-09-11NO 59 RES INST OF CHINA ORDNANCE IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NO 59 RES INST OF CHINA ORDNANCE IND
Publication Date
2018-09-11

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Abstract

The invention provides a deep conical copper shaped charge liner tissue ultrafine crystallization gradient control method, which comprises the steps of extrusion shaping, re-crystallization heat treatment and high-frequency percussion, wherein in the extrusion shaping step, multi-pass extrusion is used; the high-frequency impact knocking speed is 15000 to 40000 times / minute; the knocking force is1200 to 2000 N; the times is 1 to 3 times. The control technology provided by the invention realizes the deep conical copper shaped charge liner shaping and surface quality control; the material plasticity is improved; the fine crystal tissues can be obtained; the ultrafine crystal gradient tissues distributed in the thickness direction are formed on the surface layer in the charge shaped liner. The ultrafine crystal gradient tissues distributed in the thickness direction of the charge shaped liner are obtained by using the method; the tissue distribution in the bus direction is uniform; a novel preparation method is provided for the invention of the high-performance deep conical copper shaped charge liner.
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Description

technical field

[0001] The invention relates to the technical field of metal plastic forming, in particular to a method for controlling the ultra-fine crystallization gradient of a deep conical copper medicine-shaped cover structure. Background technique

[0002] A typical shaped charge jet has a high head velocity (≥8500m / s) and a low tail velocity (about 3000m / s). This velocity gradient enables the jet to be drawn very long under a certain blasting height (up to 20 to 100 times the caliber length of the medicine mask), with high penetration ability. The penetrating ability of the jet is proportional to the length of the continuous jet, but due to the internal defects of the metal and the expansion of the jet, the jet will eventually break into sections of jujube-shaped particles in the axial direction, which limits the length of the continuous jet and the penetration of the jet. The transmission of penetration energy, and the mutual disturbance between the fractured parti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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