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Explosive Compression Molding System for Improving Charge Density and Density Uniformity of Special-shaped Projectiles

A technology of density uniformity and compression molding, which is applied in the direction of explosives, explosives processing equipment, offensive equipment, etc., can solve the problems of low charge density, difference in radial maximum density, and poor density uniformity, so as to increase charge amount and increase Effect of contact area and density difference reduction

Active Publication Date: 2021-10-08
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common feature of the above two processes is that due to the limitation of the diameter of the mouth of the projectile, the punch can only exert pressure on the center of the powder during pressing, and the periphery is basically formed by extrusion, resulting in poor density uniformity and poor powder charge. low density
After the 155mm anti-explosive bomb is filled with press-packed mixed explosives, the maximum radial density difference can reach about 8%, which seriously affects the filling quality of the whole bomb

Method used

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  • Explosive Compression Molding System for Improving Charge Density and Density Uniformity of Special-shaped Projectiles
  • Explosive Compression Molding System for Improving Charge Density and Density Uniformity of Special-shaped Projectiles
  • Explosive Compression Molding System for Improving Charge Density and Density Uniformity of Special-shaped Projectiles

Examples

Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides an explosive compression molding system that improves the charge density and density uniformity of special-shaped projectiles, including an automatic feeding mechanism, a compression molding mechanism, a body fixing and rotating mechanism; the compression molding mechanism is located at the center, and the automatic feeding mechanism is located at On the rear side of the press-forming mechanism, the projectile body is fixed and the rotating mechanism is fixed at the center of the lower platform of the press-forming mechanism;

[0034] Automatic feeding mechanism comprises: frame 101, the first guide rail 102 that is fixed on the frame 101, the screw feeder 103 that is located on the first guide rail 102, the mobile cylinder 104 that is located at the first guide rail 102 rear, is located at the screw feeder The charging bin 105 that is communicated with the screw feeder 103 above the machine 103 and the feed funnel 106 that is located at the fron...

Embodiment 2

[0053] This embodiment provides an explosive compression molding system that improves the charging density and density uniformity of special-shaped projectiles, including an automatic feeding mechanism, a compression molding mechanism, and a body fixing and rotating mechanism; and each mechanism is the same as that in Embodiment 1. The difference between Example 1 and Example 1 is that the diameter of the straight section punch 205 in this example is 60 mm.

[0054] In this example, the press molding of the aluminum-containing mixed explosive molding powder is mainly carried out. The mixed explosive code name is JHL-7, which is composed of RDX, aluminum powder, EVA, paraffin, etc., and has a theoretical density of 1.83g cm -3 . The filling shell is a 120mm special-shaped mold with a mouth diameter of 70mm, a bottom diameter of 114mm, and a charge height of 400mm.

[0055] As a comparison, the prior art 1 is a step-by-step press-fitting process, using a 200T press, a punch dia...

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Abstract

The invention discloses an explosive pressing and forming system for improving the charging density and density uniformity of special-shaped projectiles, which includes an automatic feeding mechanism, a pressing and forming mechanism, a fixing and rotating mechanism for projectiles; the pressing and forming mechanism is located at the center of the explosives pressing system, The automatic feeding mechanism is located at the rear side of the pressing and forming mechanism, and the body fixing and rotating mechanism are fixed at the center of the lower platform of the pressing and forming mechanism; the pressing and forming mechanism includes a press, a second guide rail, a mobile bracket installed on the second guide rail, and a mobile The vertical eccentric punch, straight section punch and explosion-proof servo motor on the bracket, through the eccentric movement of the eccentric punch in the special-shaped mold and the rotation of the projectile, increase the contact area between the punch and the powder, thereby reducing the center density and The surrounding density is poor, which increases the overall charge density; it is suitable for special-shaped projectile charges with "small mouth and big belly", which can effectively increase the charge amount and reduce the density difference.

Description

technical field [0001] The invention relates to a compression molding system, in particular to an explosive compression molding system for improving the charge density and density uniformity of special-shaped projectiles, which is suitable for high-quality compression molding of press-packed mixed explosive molding powder in special-shaped projectiles. Background technique [0002] High charge density and low density difference are the key indicators to measure the high-quality charge of projectiles. Increase the charge density around the interior of the projectile and reduce the density difference with the center charge density, thereby increasing the overall charge density and improving the damage power of the ammunition; in addition, reducing the density difference helps to improve the ammunition’s ability to withstand the fire during the firing process. The launch safety of the ammunition is improved, thereby improving the comprehensive performance of the ammunition. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B21/00
CPCC06B21/0075
Inventor 刁小强李文祥邢晓玲苏杨罗志龙
Owner XIAN MODERN CHEM RES INST