CN111982742A - Device and method for testing density of large-size and special-shaped explosive integral grain - Google Patents
Device and method for testing density of large-size and special-shaped explosive integral grain Download PDFInfo
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- 239000002360 explosive Substances 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005303 weighing Methods 0.000 claims abstract description 126
- 239000003814 drug Substances 0.000 claims abstract description 44
- 230000000007 visual effect Effects 0.000 claims abstract description 39
- 239000011521 glass Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 37
- 238000005259 measurement Methods 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 229940079593 drug Drugs 0.000 abstract description 12
- 229940057995 liquid paraffin Drugs 0.000 description 9
- 238000001514 detection method Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000005474 detonation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N2009/022—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids
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Abstract
The invention discloses a device and a method for testing the density of a large-size and special-shaped explosive integral charge, which comprises a density balance, a span frame, a charge weighing component and a visual container; the density balance comprises the following components in sequence: the device comprises a rear sensor, a weighing chamber and a display control terminal; the weighing chamber is enclosed by a weighing disc at the bottom, a rear wall and a glass windshield; a vertical weighing shaft is arranged on the rear wall; the straddle comprises a horizontal support plate, an inclined connecting plate and a vertical mounting plate, wherein two parallel and opposite side clamping plates are vertically arranged on two sides of the vertical mounting plate; the drug weighing component comprises a drug weighing disc and a hook arranged on the bottom surface of the drug weighing disc; the visual container is placed on the weighing plate of the medicine weighing chamber, the vertical mounting plate of the span frame is mounted right above the horizontal support plate which can enable the span frame to be positioned behind the weighing shaft, and the medicine weighing plate is placed on the horizontal support plate and the hook can extend into the visual container. The invention can accurately measure the density of the auxiliary explosive column of the warhead and the integral explosive column of large-size and special-shaped explosives and powders.
Description
Technical Field
The invention belongs to the field of detection of physical and chemical properties of explosives and powders, mainly relates to a device for testing the density of an integral explosive column of a large-size special-shaped explosive and powder, and particularly relates to a device for testing the integral density of an auxiliary explosive column of a certain warhead manufactured by a press-fitting process; the method is also used for testing the density of special-shaped fire and explosive, such as the density measurement of the integral explosive column of the special-shaped fire and explosive with the diameter of 4-10cm and the thickness of not more than 6 cm.
Background
The antitank missile is used to destroy tank and other armored target, and has the features of high precision, long range, great power, high portability, etc. The anti-tank missile is developed in four generations, the tactical technical performance is obviously improved, and the anti-tank missile becomes the main body of anti-tank weapons of all countries in the world. The model products produced by I at present are suitable for carrying by individual soldiers, ground launching and vehicle-mounted launching. Still be widely used in troops as infantry firepower.
The primary explosive column density and the secondary explosive column density can be reduced to enable the secondary explosive column to be easy to detonate, the secondary explosive column and the primary explosive column to achieve stable detonation rapidly, the primary explosive column and the secondary explosive column of a certain warhead are of special-shaped structures with concave cavities, and therefore the thicknesses of all regions of the explosive columns in the compression direction are different, and density inconsistency of all regions is easily caused. Because the density and the density uniformity of the main explosive column and the auxiliary explosive column can directly influence the symmetric propagation of detonation waves, and the asymmetry of detonation waveforms can directly influence the power and the stability of the armor breaking, the accurate detection of the density of the auxiliary explosive column is crucial to the whole weapon system, and the detection accuracy is urgently needed to be improved; meanwhile, the density test accuracy of the integral explosive columns with more special shapes, particularly large sizes and special shapes, is also in urgent need to be improved.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a device and a method for testing the density of a large-size special-shaped explosive integral grain, so as to overcome the technical shortcomings and realize the density test of the special-shaped explosive integral grain with the diameter of 4-10cm and the thickness of no more than 6 cm.
In order to achieve the purpose, the invention adopts the following technical scheme:
a large-size and special-shaped explosive integral charge density testing device comprises a density balance, a straddle, a charge weighing assembly and a visual container;
the density balance comprises the following components in sequence: the device comprises a rear sensor, a weighing chamber and a display control terminal; the weighing chamber is enclosed by a weighing disc at the bottom, a rear wall and a glass windshield; a vertical weighing shaft is arranged on the rear wall;
the span frame comprises an integrated forming body and is arranged from top to bottom: the device comprises a horizontal supporting plate, an inclined connecting plate and a vertical mounting plate, wherein two parallel and opposite side clamping plates are vertically arranged on two sides of the vertical mounting plate;
the drug weighing component comprises a drug weighing disc and a hook arranged on the bottom surface of the drug weighing disc;
the visual container is a glass container with an opening at the top;
the straddle, the medicine weighing component and the visual container are uniformly distributed in the weighing chamber; the visual container is placed on a weighing plate of the medicine weighing chamber, the vertical mounting plate of the cross frame is mounted behind the weighing shaft, a horizontal support plate of the cross frame can be located right above the visual container, the medicine weighing plate of the medicine weighing assembly is placed on the horizontal support plate, and the hook can penetrate through the horizontal support plate and extend into the visual container located below the horizontal support plate.
The invention also comprises the following technical characteristics:
specifically, the weighing chamber is of a cuboid structure, and the glass windshield comprises an upper wall, a front wall, a left side wall and a right side wall; the upper wall, the front wall, the left side wall, the right side wall, the rear wall and the weighing pan enclose the weighing chamber;
the upper wall, the left side wall and the right side wall can be opened to facilitate the placement of the test sample and other components.
Specifically, horizontal support plate and vertical mounting board mutually perpendicular, the contained angle between slope connecting plate and the vertical mounting board is 170, and when vertical mounting board was installed on the weighing shaft, thereby the slope connecting plate leaned forward makes the horizontal support plate can straighten visual container directly over forward.
Specifically, the horizontal support plate is provided with an open through hole, so that when the medicine weighing disc of the medicine weighing assembly is placed on the horizontal support plate, the hook at the lower end of the medicine weighing disc can enter the through hole from the opening.
Specifically, the distance between the side clamping plates on the two sides of the vertical mounting plate is equal to the width of the weighing shaft, so that the vertical mounting plate and the side clamping plates can be sleeved on the weighing shaft;
the side clamping plates are provided with mounting grooves, two bulges are arranged on two sides of the weighing shaft, and the mounting grooves can be hung on the bulges to realize the fixation of the spanning frame when the two side clamping plates are clamped on two sides of the weighing shaft.
Specifically, the inclined connecting plate is of a hollow structure so as to reduce the dead weight of the straddle.
Specifically, the hook is located in the middle of the interior of the visual container, so that the sample is prevented from contacting the inner wall of the visual container after being hung on the hook.
Specifically, the visual container is of a cuboid structure, and the size of the visual container is 140cm in length, 80cm in width and 145cm in height.
A method for testing the density of a large-size special-shaped explosive integral grain is characterized in that the method adopts the testing device for testing, and comprises the following steps:
firstly, opening a windproof glass cover of a density balance, hanging a span frame on a weighing shaft, and stably clamping; placing the visible container on a weighing tray right below the straddle, injecting required liquid, placing the medicine weighing tray on a horizontal supporting plate of the straddle, inserting the hook into the visible container, and closing the windproof glass cover;
turning on a power supply, stabilizing for 30min, and setting parameters of the tested sample, including liquid temperature, liquid type and measurement type;
placing the sample on a weighing tray, and weighing the sample to the weight of 0.0002g to obtain the weight of the sample weighed in the air;
hanging the sample by using a hook, slowly immersing the sample in the liquid in the visual container, removing bubbles to soak the sample, weighing and reading after 2min, and obtaining the mass of the sample immersed in the liquid, wherein the liquid temperature is 20 +/-3 ℃, and the distance between the top of the sample and the liquid level is 10 mm;
and step five, calculating to obtain the density of the sample.
Compared with the prior art, the invention has the beneficial technical effects that:
1. the device has simple structure and convenient installation and cleaning.
2. The invention solves the problem of testing the density of the integral explosive column of large-size and special-shaped explosives and powders.
3. The invention solves the problem of measuring the integral density of the auxiliary grain at the warhead in China, improves the accuracy of the detection result and provides technical guarantee for the normal and stable emission of the weapon system.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
figure 2 is a schematic view of the straddle of the present invention,
(a) is a front view, (b) is a side view, and (c) is a bottom view;
FIG. 3 is a schematic view of a drug weighing assembly of the present invention;
fig. 4 is a schematic view of a visual container of the present invention.
The reference numerals have the meanings given below:
1-density balance, 2-span frame, 3-weighing medicine component and 4-visible container;
11-rear sensor, 12-weighing chamber, 121-weighing plate, 122-rear wall, 123-glass windshield, 13-display control terminal, 14-weighing shaft;
21-horizontal supporting plate, 211-through hole, 22-inclined connecting plate, 23-vertical mounting plate, 24-side clamping plate and 241-mounting groove;
31-weighing medicine tray, 32-hanging hook.
The invention is described in detail below with reference to the drawings and the detailed description.
Detailed Description
The present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention fall within the protection scope of the present invention.
The invention provides a large-size and special-shaped explosive integral charge density testing device which comprises a density balance 1, a span frame 2, a drug weighing component 3 and a visual container 4, wherein the span frame is arranged on the top of the density balance;
the density balance 1 comprises the following components arranged in sequence: a rear sensor 11, a weighing chamber 12 and a display control terminal 13; the weighing chamber 12 is enclosed by a bottom weighing pan 121, a rear wall 122 and a glass draft shield 123; a vertical weighing shaft 14 is arranged on the rear wall 122;
the straddle carrier 2 comprises an integrated body and is arranged from top to bottom: the device comprises a horizontal support plate 21, an inclined connecting plate 22 and a vertical mounting plate 23, wherein two parallel and opposite side clamping plates 24 are vertically arranged on two sides of the vertical mounting plate 23; the straddle package is made of aluminum alloy through cold bending.
The drug weighing component 3 comprises a drug weighing disc 31 and a hook 32 arranged on the bottom surface of the drug weighing disc 31;
the visual container 4 is a glass container with an open top;
the span frame 2, the drug weighing component 3 and the visual container 4 are uniformly distributed in the weighing chamber 12; the visual container 4 is placed on the weighing pan 121 of the medicine weighing chamber 12, the vertical mounting plate 23 of the straddle 2 is mounted on the weighing shaft 14 to enable the horizontal support plate 21 of the straddle 2 to be positioned right above the visual container 4, the medicine weighing pan 31 of the medicine weighing assembly 3 is placed on the horizontal support plate 21, and the hook 32 can penetrate through the horizontal support plate 21 to extend into the visual container 4 positioned below the horizontal support plate 21.
The weighing chamber 12 is of a cuboid structure, and the glass windshield 123 comprises an upper wall, a front wall, a left side wall and a right side wall; the upper wall, the front wall, the left side wall, the right side wall, the rear wall 122 and the weighing pan 121 enclose a weighing chamber 12; the top wall, left side wall and right side wall can all be opened to facilitate the placing of sample and other each parts.
The horizontal support plate 21 and the vertical mounting plate 23 are perpendicular to each other, the included angle between the inclined connecting plate 22 and the vertical mounting plate 23 is 170 degrees, and when the vertical mounting plate 23 is mounted on the weighing shaft 14, the inclined connecting plate 2 is inclined forwards so that the horizontal support plate 21 can be straightened forwards right above the visible container 4.
The horizontal support plate 21 is provided with a through hole 211 with an opening, so that when the medicine weighing plate 31 of the medicine weighing component 3 is placed on the horizontal support plate 21, the hook 32 at the lower end of the medicine weighing plate 31 can enter the through hole 211 from the opening.
The distance between the side clamping plates 24 at the two sides of the vertical mounting plate 23 is equal to the width of the weighing shaft 14, so that the vertical mounting plate 23 and the side clamping plates 24 can be sleeved on the weighing shaft 14; the side clamping plates 24 are provided with mounting grooves 241, two protrusions are arranged on two sides of the weighing shaft 14, and the mounting grooves 241 can be hung on the protrusions to fix the straddle carrier 2 when the two side clamping plates 24 are clamped on two sides of the weighing shaft 14.
The inclined connecting plate 22 is a hollow structure to reduce the dead weight of the straddle carrier 2.
The hook 32 is located in the middle of the inside of the visual container 4, so that the sample is prevented from contacting the inner wall of the visual container 4 after being hung on the hook 32.
The visual container 4 is of a cuboid structure, and the size of the visual container 4 is 140cm in length, 80cm in width and 145cm in height.
The invention also provides a method for testing the density of the large-size special-shaped explosive integral grain, which adopts the testing device to test and comprises the following steps:
firstly, opening a windproof glass cover of a density balance, hanging a span frame on a weighing shaft, and stably clamping; placing the visible container on a weighing tray right below the straddle, injecting required liquid, placing the medicine weighing tray on a horizontal supporting plate of the straddle, inserting the hook into the visible container, and closing the windproof glass cover;
turning on a power supply, stabilizing for 30min, and setting parameters of the tested sample, including liquid temperature, liquid type and measurement type;
placing the sample on a weighing tray, and weighing the sample to the weight of 0.0002g to obtain the weight of the sample weighed in the air;
hanging the sample by using a hook, slowly immersing the sample in the liquid in the visual container, removing bubbles to soak the sample, weighing and reading after 2min, and obtaining the mass of the sample immersed in the liquid, wherein the liquid temperature is 20 +/-3 ℃, and the distance between the top of the sample and the liquid level is 10 mm;
and step five, calculating to obtain the density of the sample.
The present invention will be described in further detail with reference to examples.
Example 1:
when the sample is an explosive, the testing device is adopted for testing, and comprises the following steps:
firstly, opening a windproof glass cover of a density balance, hanging a span frame on a weighing shaft, and stably clamping; placing the visible container on a weighing plate right below the straddle, injecting required liquid (the liquid is purified water), placing the medicine weighing plate on a horizontal supporting plate of the straddle, inserting the hook into the visible container, and closing the windproof glass cover;
turning on a power supply, stabilizing for 30min, and setting parameters of the tested sample, including liquid temperature, liquid type and measurement type;
placing the sample on a weighing tray, and weighing the sample to the weight of 0.0002g to obtain the weight of the sample weighed in the air;
hanging the sample by using a hook, slowly immersing the sample in the liquid in the visual container, removing bubbles to soak the sample, weighing and reading after 2min, and obtaining the mass of the sample immersed in the liquid, wherein the liquid temperature is 20 +/-3 ℃, and the distance between the top of the sample and the liquid level is 10 mm;
and step five, calculating to obtain the density of the sample.
The calculation process is as follows:
calculation of the density of the insoluble, non-hygroscopic sample in the special dip:
in the formula:
ρt-the density of the sample in air at a temperature of t ℃ in grams per cubic centimeter (g/cm)3)；m1-the mass of the sample when weighed in air, in grams (g);
m2-the mass of the sample when weighed in a special dip in grams (g);
ρwt- -density of distilled water at t ℃ g/cm3(ii) a The values are obtained by looking up a table based on the temperature at the time of measurement.
Table 1 shows the results of six batches of the secondary grains at the warhead of China measured by the method of this example.
TABLE 1 measurement results of six batches
| Serial number | Product batch | Bulk density, g/cm3 |
| 1 | 1 batch of | 1.796 |
| 2 | 2 batches of | 1.790 |
| 3 | 3 batches of | 1.793 |
| 4 | 4 batches of | 1.792 |
| 5 | 5 batches of | 1.788 |
| 6 | 6 batches of | 1.791 |
The test system measures the overall density of the auxiliary explosive columns of a certain warhead in six batches in China, so that the overall density of the explosive columns can be accurately measured, and the repeatability meets the technical requirements of the weapon system.
Example 2:
when the sample is gunpowder, the testing device is adopted for testing, and comprises the following steps:
firstly, opening a windproof glass cover of a density balance, hanging a span frame on a weighing shaft, and stably clamping; placing the visible container on a weighing plate right below the straddle, injecting required liquid (liquid is liquid paraffin), placing the medicine weighing plate on a horizontal supporting plate of the straddle, inserting the hook into the visible container, and closing the windproof glass cover;
turning on a power supply, stabilizing for 30min, and setting parameters of the tested sample, including liquid temperature, liquid type and measurement type;
placing the sample on a weighing tray, and weighing the sample to the weight of 0.0002g to obtain the weight of the sample weighed in the air;
hanging the sample by using a hook, slowly immersing the sample in the liquid in the visual container, removing bubbles to soak the sample, weighing and reading after 2min, and obtaining the mass of the sample immersed in the liquid, wherein the liquid temperature is 20 +/-3 ℃, and the distance between the top of the sample and the liquid level is 10 mm;
and step five, calculating to obtain the density of the sample.
The calculation process is as follows:
when the density of the liquid paraffin is measured by the vitreous body, the calculation is carried out according to the formula (2):
in the formula:
ρt1-the density of liquid paraffin has a value in grams per cubic centimeter (g/cm)3)；
m1-the mass of the glass body has a value in grams (g);
m2-the weighed value of the glass body with the metal suspension wires in liquid paraffin in grams (g);
m3-the weighed number of the metal suspension wires in liquid paraffin in grams (g);
v- -value of the volume of the glass body in (cm)3)。
Calculation of sample Density
The density of the sample was calculated according to equation (3):
in the formula:
ρt-number of densities of the sample in grams per cubic centimeter (g/cm)3)；
m- -the value of the mass of the sample in air, in grams (g);
m4- -test specimenAnd the mass of the metal suspension wire in the liquid paraffin, the unit is gram (g);
m3-the weighed number of the metal suspension wires in liquid paraffin in grams (g);
ρt1the density of the liquid paraffin in grams per cubic centimeter (g/cm)3)；
When the test sample is measured under liquid paraffin, two results are measured in parallel, and the difference between the parallel results is not more than 0.005g/cm3Taking the average value, the test result should be expressed to three decimal places.
Claims (9)
1. A large-size and special-shaped explosive integral grain density testing device is characterized by comprising a density balance (1), a straddle (2), a weighing component (3) and a visible container (4);
the density balance (1) comprises the following components which are arranged in sequence: a rear sensor (11) and a weighing chamber (12); the weighing chamber (12) is surrounded by a weighing plate (121) at the bottom, a rear wall (122) and a glass windshield (123); a vertical weighing shaft (14) is arranged on the rear wall (122);
the straddle (2) comprises an upper part and a lower part which are arranged from top to bottom: the device comprises a horizontal supporting plate (21), an inclined connecting plate (22) and a vertical mounting plate (23), wherein two parallel and opposite side clamping plates (24) are vertically arranged on two sides of the vertical mounting plate (23);
the medicine weighing component (3) comprises a medicine weighing disc (31) and a hook (32) arranged on the bottom surface of the medicine weighing disc (31);
the visual container (4) is a glass container with an open top;
the straddle (2), the medicine weighing component (3) and the visible container (4) are uniformly arranged in the weighing chamber (12); the visual container (4) is placed on a weighing plate (121) of the medicine weighing chamber (12), a vertical mounting plate (23) of the straddle frame (2) is mounted on the weighing shaft (14) to enable a horizontal support plate (21) of the straddle frame (2) to be located right above the visual container (4), the medicine weighing plate (31) of the medicine weighing assembly (3) is placed on the horizontal support plate (21), and the hook (32) can penetrate through the horizontal support plate (21) to extend into the visual container (4) located below the horizontal support plate (21).
2. The large-size special-shaped explosive integral column density testing device as claimed in claim 1, wherein the weighing chamber (12) is of a cuboid structure, and the glass windshield (123) comprises an upper wall, a front wall, a left side wall and a right side wall; the upper wall, the front wall, the left side wall, the right side wall, the rear wall (122) and the weighing pan (121) enclose the weighing chamber (12);
the upper wall, the left side wall and the right side wall can be opened to facilitate placing of the sample.
3. The density testing device for the large-size special-shaped explosive integral grain according to claim 1, characterized in that the horizontal support plate (21) and the vertical mounting plate (23) are perpendicular to each other, the included angle between the inclined connecting plate (22) and the vertical mounting plate (23) is 170 degrees, when the vertical mounting plate (23) is mounted on the weighing shaft (14), the inclined connecting plate (2) inclines forwards so that the horizontal support plate (21) can be straightened forwards to be right above the visual container (4).
4. The device for testing the density of the integral grain of large-size special-shaped explosives and powders according to claim 3 is characterized in that the horizontal support plate (21) is provided with a through hole (211) with an opening, so that when a medicine weighing disc (31) of the medicine weighing assembly (3) is placed on the horizontal support plate (21), a hook (32) at the lower end of the medicine weighing disc (31) can enter the through hole (211) from the opening.
5. The density testing device for the large-size special-shaped explosive integral column is characterized in that the distance between the side clamping plates (24) on the two sides of the vertical mounting plate (23) is equal to the width of the weighing shaft (14), so that the vertical mounting plate (23) and the side clamping plates (24) can be sleeved on the weighing shaft (14);
the side clamping plates (24) are provided with mounting grooves (241), two bulges are arranged on two sides of the weighing shaft (14), and the mounting grooves (241) can be hung on the bulges to fix the spanning frame (2) when the two side clamping plates (24) are clamped on two sides of the weighing shaft (14).
6. The device for testing the density of the integral grain of the large-size special-shaped explosives and powders according to claim 3, characterized in that the inclined connecting plate (22) is of a hollow structure so as to reduce the self weight of the straddle (2).
7. The device for testing the density of the large-size special-shaped explosive integral grain according to the claim 1, characterized in that the hook (32) is positioned in the middle of the inside of the visual container (4), thereby preventing the sample from contacting the inner wall of the visual container (4) after being hung on the hook (32).
8. The device for testing the density of the large-size special-shaped explosive integral grain according to claim 1, wherein the visual container (4) is of a cuboid structure, and the visual container (4) is 140cm long, 80cm wide and 145cm high.
9. A method for testing the density of a large-size special-shaped explosive integral grain, which is characterized in that the method is tested by using the testing device of any one of claims 1 to 8, and comprises the following steps:
firstly, opening a windproof glass cover of a density balance, hanging a span frame on a weighing shaft, and stably clamping; placing the visible container on a weighing tray right below the straddle, injecting required liquid, placing the medicine weighing tray on a horizontal supporting plate of the straddle, inserting the hook into the visible container, and closing the windproof glass cover;
turning on a power supply, stabilizing for 30min, and setting parameters of the tested sample, including liquid temperature, liquid type and measurement type;
placing the sample on a weighing tray, and weighing the sample to the weight of 0.0002g to obtain the weight of the sample weighed in the air;
hanging the sample by using a hook, slowly immersing the sample in the liquid in the visual container, removing bubbles to soak the sample, weighing and reading after 2min, and obtaining the mass of the sample immersed in the liquid, wherein the liquid temperature is 20 +/-3 ℃, and the distance between the top of the sample and the liquid level is 10 mm;
and step five, calculating to obtain the density of the sample.
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| CN202010808688.1A CN111982742A (en) | 2020-08-12 | 2020-08-12 | Device and method for testing density of large-size and special-shaped explosive integral grain |
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| CN202010808688.1A CN111982742A (en) | 2020-08-12 | 2020-08-12 | Device and method for testing density of large-size and special-shaped explosive integral grain |
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2020
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