Tester for flowing property of molding powder of propellants and explosives

A molding powder and fluidity technology, which is applied in the field of powder fluidity testing equipment, can solve the problems of low test precision, large product differences, and inappropriate testing of propellant and explosive fluidity, and achieve high test precision and meet the requirements for Effect of Fluidity Test Requirements

Inactive Publication Date: 2015-11-11
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, as stated in the patent CN200910022917 "Testing Method for Fluidity of Explosives Based on Three-Dimensional Reconstruction", the current means of controlling the fluidity of powders of explosives and explosives mainly depends on the operator's hand feeling and visual inspection, and there is no quantitative method. Therefore, it is easy to cause different operations. The products prepared by personnel are quite different, thus affecting the consistency of products
GB11986-1989 "Measurement of the Angle of Repose of Surfactant Powder and Particles" adopts the angle of repose method to test the fluidity of surfactant particles or powders (for example, patent CN201110329347 "Methods for Improving the Fluidity and Bulk Density of Vitamin A and Vitamin D3 Microcapsules " and patent CN201310061973 " a kind of preparation method of dialkylphosphinate with good fluidity " all adopt this method to control the quality of product), but this method is not quite suitable for propellant fluidity test, because The fluidity of explosive molding powder is much better than that of washing powder and medicine powder. The angle of repose method has a large error, the relative standard deviation is above 5%, and the test precision is low, which cannot meet the convective fluidity test of explosive molding powder. requirements

Method used

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  • Tester for flowing property of molding powder of propellants and explosives
  • Tester for flowing property of molding powder of propellants and explosives
  • Tester for flowing property of molding powder of propellants and explosives

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The fluidity tester for explosive molding powder includes a base plate 1, a funnel insert plate 2, a funnel 3, a fixing rod 4, a column 5, a fixing screw 6, an assembly screw 7, a collecting plate 8, and a standard cup 9. The column 5 is vertically fixed on the bottom plate 1 by the assembly screw 7, the fixing rod 4 is horizontally fixed on the column 5 by the fixing screw 6, and the angle is perpendicular to the column 5, the funnel 3 is fixed by the fixing rod 4, placed vertically, and the mouth of the funnel is upward, and the flow The outlet is facing down, the collecting plate 8 is placed under the funnel 3 to receive the modeling powder sample, the funnel insert plate 2 can be inserted vertically into the funnel 3, and is used to control the opening or closing of the outlet of the funnel, and the standard cup 9 is used to determine the shape of the modeling powder sample. volume.

[0023] The side angle α of the funnel 3 is 30°, the roughness is 0.2 μm, and the f...

Embodiment 2

[0025] The fluidity tester for explosive molding powder includes a base plate 1, a funnel insert plate 2, a funnel 3, a fixing rod 4, a column 5, a fixing screw 6, an assembly screw 7, a collecting plate 8, and a standard cup 9. The column 5 is vertically fixed on the bottom plate 1 by the assembly screw 7, the fixing rod 4 is horizontally fixed on the column 5 by the fixing screw 6, and the angle is perpendicular to the column 5, the funnel 3 is fixed by the fixing rod 4, placed vertically, and the mouth of the funnel is upward, and the flow The outlet is facing down, the collecting plate 8 is placed under the funnel 3 to receive the modeling powder sample, the funnel insert plate 2 can be inserted vertically into the funnel 3, and is used to control the opening or closing of the outlet of the funnel, and the standard cup 9 is used to determine the shape of the modeling powder sample. volume.

[0026] The side angle α of the funnel 3 is 60°, the roughness is 0.1 μm, and the f...

Embodiment 3

[0028] The fluidity tester for explosive molding powder includes a base plate 1, a funnel insert plate 2, a funnel 3, a fixing rod 4, a column 5, a fixing screw 6, an assembly screw 7, a collecting plate 8, and a standard cup 9. The column 5 is vertically fixed on the bottom plate 1 by the assembly screw 7, the fixing rod 4 is horizontally fixed on the column 5 by the fixing screw 6, and the angle is perpendicular to the column 5, the funnel 3 is fixed by the fixing rod 4, placed vertically, and the mouth of the funnel is upward, and the flow The outlet is facing down, the collecting plate 8 is placed under the funnel 3 to receive the modeling powder sample, the funnel insert plate 2 can be inserted vertically into the funnel 3, and is used to control the opening or closing of the outlet of the funnel, and the standard cup 9 is used to determine the shape of the modeling powder sample. volume.

[0029] The side angle α of the funnel 3 is 45°, the roughness is 0.05 μm, and the ...

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Abstract

The invention discloses a tester for flowing property of molding powder of propellants and explosives. The tester is designed to solve the problems that the test precision of flowing property of the molding powder of propellants and explosives is not high enough in the prior art, and the application requirement cannot be satisfied. The disclosed tester for the flowing property of molding powder of propellants and explosives is characterized by comprising a base plate (1), a funnel plugboard (2), a funnel (3), a fixing rod (4), a stand column (5), a fixing screw (6), a rigging screw (7), a catch plate (8), and a standard cup (9). The test can quantitatively test the flowing property of molding powder of propellants and explosives. Compared to the prior testing art, the tester is higher in test precision and can satisfy application requirement.

Description

technical field [0001] The invention relates to a powder fluidity testing device, in particular to a propellant powder fluidity testing instrument. technical background [0002] Press-fit molding is an important way of explosive molding, which has many advantages such as high dimensional accuracy, high molding density, and convenient molding. The raw material for press molding is called modeling powder. The fluidity of the molding powder has a crucial impact on the quality of the press-molded product: if the fluidity of the molding powder is too poor, it is difficult to spread evenly in the mold, and the density of the pressed product will be uneven, so the quality of the pressed product is poor ; If the fluidity of the modeling powder is too good, the pressed product will have a lower density and thus lower energy per unit volume. Only the modeling powder with moderate fluidity, the pressed product has a uniform and high density, and the quality is the best. Therefore, i...

Claims

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Application Information

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IPC IPC(8): G01N11/06
Inventor刁小强王彩玲赵省向张为鹏李文祥邢晓玲戴致鑫姚李娜陶俊韩仲熙方伟黄亚峰
OwnerXIAN MODERN CHEM RES INST