CN109400424A - The method that tube grain is coated using liquid medium - Google Patents
The method that tube grain is coated using liquid medium Download PDFInfo
- Publication number
- CN109400424A CN109400424A CN201811246171.7A CN201811246171A CN109400424A CN 109400424 A CN109400424 A CN 109400424A CN 201811246171 A CN201811246171 A CN 201811246171A CN 109400424 A CN109400424 A CN 109400424A
- Authority
- CN
- China
- Prior art keywords
- locating piece
- cladding
- powder column
- propellant powder
- outer diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0083—Treatment of solid structures, e.g. for coating or impregnating with a modifier
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention relates to the methods coated using liquid medium to tube grain, belong to propellant loading cladding field.Method for coating of the invention, this method are realized using upper locating piece and lower locating piece；Lower locating piece and upper locating piece are cylindrical structure, and the inner side end of two locating pieces is extended with cylindrical positioning column；Wherein, the center of upper locating piece and outer circle are axially provided with gas vent；Specific encapsulation steps are as follows: the both ends inner hole of upper locating piece and lower locating piece insertion tubulose propellant charge, shell-like thermal shrinkage type cladding fire proofing cover outside tubular propellant powder column, and both ends oral area is fixed by clip, composition cladding component；Locating piece one end under cladding component is immersed downward in high-temp liquid medium, the immersed in liquid level for coating component is no more than the upper surface of upper locating piece；After the completion of heating, locating piece and lower locating piece in taking-up complete cladding.Method for coating of the invention is suitable for thermal shrinkage type cladding fire proofing to the cladding of tubular propellant powder column.
Description
Technical field
The present invention relates to the methods coated using liquid medium to tube grain, belong to propellant loading cladding field.
Background technique
The engine dress that important component of the clad as propellant loading, performance and covered effect directly affect
The reliability of medicine.In recent years, as the type of novel covering material development increases, matched method for coating is also needed constantly
Innovation.It is that the shell-like covering material that will be processed covers when certain thermal shrinkage type cladding fire proofing coats tubular propellant
It is Nian Jie with propellant charge cladding after shrinking covering material by Hot-blast Heating mode outside propellant charge.And use hot wind
The mode of heating can not achieve to entire clad while heat, and the degree that covering material is shunk is inconsistent, make the packet of clad
It covers in uneven thickness, influences covered effect.
Summary of the invention
The purpose of the present invention is to solve traditional handicrafts to coat fire proofing to certain thermal shrinkage type using Hot-blast Heating mode
When being coated, there is a problem of that cladding is in uneven thickness, and a kind of side coated using liquid medium to tube grain is provided
Method.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of method coated using liquid medium to tube grain of the invention, this method is using upper locating piece and lower fixed
Position part is realized；
Lower locating piece is the cylindrical structure that outer diameter is greater than tubular propellant powder column outer diameter, the upper surface center of lower locating piece
The cylindrical positioning column that outer diameter and tubular propellant powder column internal diameter match is upwardly extended, the side wall of lower locating piece is provided with clip
Mounting groove；
Upper locating piece is the cylindrical structure that outer diameter is greater than tubular propellant powder column outer diameter, the lower end surface center of upper locating piece
The cylindrical positioning column that outer diameter and tubular propellant powder column internal diameter match is upwardly extended, the center of upper locating piece and outer circle are equal
It axially is provided with gas vent, the side wall of upper locating piece is provided with clip mounting groove；
Specific encapsulation steps are as follows: upper locating piece and lower locating piece are inserted into tubulose by respective cylindrical positioning column respectively and push away
It is installed into the both ends inner hole of agent powder column, and in upper locating piece and lower locating piece with the place of docking of tubular propellant powder column both ends inner hole
Gasket, increasing of the gas vent at upper locating piece center when upper locating piece and lower locating piece are inserted into tubular propellant powder column inner hole
Pressure is exhausted；Shell-like thermal shrinkage type cladding fire proofing is covered outside tubular propellant powder column, and shell-like thermal shrinkage type is coated
The both ends oral area of fire proofing is separately fixed at the side wall of upper locating piece and lower locating piece, composition cladding component by clip；It will
Locating piece one end is immersed downward in high-temp liquid medium under cladding component, and the immersed in liquid level for coating component is no more than upper locating piece
Upper surface；Shell-like thermal shrinkage type cladding fire proofing bounces back under the heating of high-temp liquid medium, and cladding is pasted onto cladding component
Outside, the air between tubular propellant powder column and thermal shrinkage type cladding fire proofing are discharged from the gas vent of upper locating piece outer circle；
After the completion of heating, cladding component is taken out, thermal shrinkage type cladding fire proofing is cut with upper locating piece and lower locating piece side wall abutting edge
Fall, finally take out upper locating piece and lower locating piece from the both ends inner hole of tubular propellant powder column, completes cladding.
Further, the upper end outer of lower locating piece is machined with annular retraction of the outer diameter less than tubular propellant powder column outer diameter
Slot, the lower end outer of upper locating piece are machined with annular retraction slot of the outer diameter less than tubular propellant powder column outer diameter, shell-like thermal shrinkage type
When cladding fire proofing bounces back under the heating of high-temp liquid medium, it is recessed in the inward at both ends of tubular propellant powder column, cladding
Area is complete.
Beneficial effect
Method for coating of the invention is suitable for thermal shrinkage type cladding fire proofing to the cladding of tubular propellant powder column, cladding behaviour
Make simple, coating efficiency height；Due to mining height geothermal liquid medium, the degree consistency that covering material is shunk is good, the cladding of clad
Thickness is uniform, and covered effect is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that cladding component is constituted in method for coating of the present invention；
Fig. 2 is the structural schematic diagram of lower locating piece in present invention cladding component；
Fig. 3 is the structural schematic diagram of upper locating piece in present invention cladding component；
In figure, locating piece under 1-；2- tubular propellant powder column；3- shell-like thermal shrinkage type coats fire proofing；The upper locating piece of 4-.
Specific embodiment
The contents of the present invention are further described with reference to the accompanying drawings and examples.
Embodiment
The method that certain model tubular propellant powder column is coated using method for coating of the invention, using upper locating piece
4 and lower locating piece 1 realize；
As shown in Fig. 2, lower locating piece 1 is the cylindrical structure that outer diameter is greater than 2 outer diameter of tubular propellant powder column, lower locating piece
1 upper end outer is machined with annular retraction slot of the outer diameter less than 2 outer diameter of tubular propellant powder column, in the upper surface of lower locating piece 1
The heart upwardly extends the cylindrical positioning column that outer diameter and 2 internal diameter of tubular propellant powder column match, and the side wall of lower locating piece 1 is provided with
Clip mounting groove；
As shown in figure 3, upper locating piece 4 is the cylindrical structure that outer diameter is greater than 2 outer diameter of tubular propellant powder column, upper locating piece
4 lower end outer is machined with annular retraction slot of the outer diameter less than 2 outer diameter of tubular propellant powder column, in the lower end surface of upper locating piece 4
The cylindrical positioning column that the heart upwardly extends outer diameter and 2 internal diameter of tubular propellant powder column matches, the center of upper locating piece 4 and outer
Circle is axial to be provided with gas vent, and the side wall of upper locating piece 4 is provided with clip mounting groove；
Specific encapsulation steps are as follows: upper locating piece 4 and lower locating piece 1 pass through respective cylindrical positioning column and be inserted into tubulose respectively
The both ends inner hole of propellant charge 2, and docking in upper locating piece 4 and lower locating piece 1 and 2 both ends inner hole of tubular propellant powder column
Place's installation gasket, the gas vent at upper 4 center of locating piece is when upper locating piece 4 and lower locating piece 1 are inserted into tubular propellant medicine
The pressurization of 2 inner hole of column is exhausted；Shell-like thermal shrinkage type is coated 3 sets of fire proofing outside tubular propellant powder column 2, and will set
The both ends oral area of shape thermal shrinkage type cladding fire proofing 3 is separately fixed at the side wall of upper locating piece 4 and lower locating piece 1 by clip,
Composition cladding component, as shown in Figure 1；1 one end of locating piece under cladding component is immersed downward in high-temp liquid medium, component is coated
Immersed in liquid level be no more than upper locating piece 4 upper surface；Shell-like thermal shrinkage type coats fire proofing 3 in the heating of high-temp liquid medium
Lower retraction, cladding are pasted onto the outside of cladding component, the air between tubular propellant powder column 2 and thermal shrinkage type cladding fire proofing
It is discharged from the gas vent of upper 4 outer circle of locating piece；After the completion of heating, take out cladding component, by thermal shrinkage type cladding fire proofing with it is upper
Locating piece 4 and 1 side wall abutting edge of lower locating piece are cut, finally by upper locating piece 4 and lower locating piece 1 from tubular propellant powder column 2
Both ends inner hole in take out, complete cladding.
Claims (4)
1. the method coated using liquid medium to tube grain, it is characterized in that: this method uses upper locating piece and lower locating piece
It realizes；
Lower locating piece is the cylindrical structure that outer diameter is greater than tubular propellant powder column outer diameter, and the upper surface center of lower locating piece is upward
It is extended with the cylindrical positioning column that outer diameter and tubular propellant powder column internal diameter match, the side wall of lower locating piece is provided with clip installation
Slot；
Upper locating piece is the cylindrical structure that outer diameter is greater than tubular propellant powder column outer diameter, and the lower end surface center of upper locating piece is upward
It is extended with the cylindrical positioning column that outer diameter and tubular propellant powder column internal diameter match, the center of upper locating piece and outer circle are axial
It is provided with gas vent, the side wall of upper locating piece is provided with clip mounting groove；
Specific encapsulation steps are as follows: upper locating piece and lower locating piece pass through respective cylindrical positioning column and be inserted into tubular propellant respectively
The both ends inner hole of powder column, the gas vent at upper locating piece center is when upper locating piece and lower locating piece are inserted into tubular propellant powder column
The pressurization of inner hole is exhausted；Shell-like thermal shrinkage type cladding fire proofing is covered outside tubular propellant powder column, and shell-like is hot
The both ends oral area of miniature cladding fire proofing is separately fixed at the side wall of upper locating piece and lower locating piece, composition cladding by clip
Component；Locating piece one end under cladding component is immersed downward in high-temp liquid medium, coats the immersed in liquid level of component no more than upper
The upper surface of locating piece；Shell-like thermal shrinkage type cladding fire proofing bounces back under the heating of high-temp liquid medium, and cladding is pasted onto packet
The outside of laminated piece, tubular propellant powder column and thermal shrinkage type coat exhaust of the air between fire proofing from upper locating piece outer circle
Hole discharge；After the completion of heating, cladding component is taken out, thermal shrinkage type cladding fire proofing is glued with upper locating piece and lower locating piece side wall
The place of connecing is cut, and finally takes out upper locating piece and lower locating piece from the both ends inner hole of tubular propellant powder column, completes cladding.
2. the method coated as described in claim 1 using liquid medium to tube grain, it is characterized in that: lower locating piece is upper
End outer is machined with annular retraction slot of the outer diameter less than tubular propellant powder column outer diameter.
3. the method coated as described in claim 1 using liquid medium to tube grain, it is characterized in that: under upper locating piece
End outer is machined with annular retraction slot of the outer diameter less than tubular propellant powder column outer diameter.
4. method coat to tube grain using liquid medium as described in claim 1, it is characterized in that: upper locating piece with
Lower locating piece installs gasket with the place of docking of tubular propellant powder column both ends inner hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246171.7A CN109400424B (en) | 2018-10-25 | 2018-10-25 | Method for coating tubular propellant grain by liquid medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246171.7A CN109400424B (en) | 2018-10-25 | 2018-10-25 | Method for coating tubular propellant grain by liquid medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109400424A true CN109400424A (en) | 2019-03-01 |
| CN109400424B CN109400424B (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811246171.7A Active CN109400424B (en) | 2018-10-25 | 2018-10-25 | Method for coating tubular propellant grain by liquid medium |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954526A (en) * | 1971-02-22 | 1976-05-04 | Thiokol Corporation | Method for making coated ultra-fine ammonium perchlorate particles and product produced thereby |
| CN101982721A (en) * | 2010-10-13 | 2011-03-02 | 宜宾北方川安化工有限公司 | Method for coating grains |
| CN104276910A (en) * | 2013-07-22 | 2015-01-14 | 湖北航天化学技术研究所 | Process for forming burning restriction layer of explosive column of gas generating agent |
| CN106589650A (en) * | 2016-12-27 | 2017-04-26 | 郑州源冉生物技术有限公司 | Fine-performance plastic material and preparation method thereof |
| CN207746043U (en) * | 2017-09-29 | 2018-08-21 | 中国航天科技集团公司川南机械厂 | One kind automatic coating unit of powder column containing energy |
-
2018
- 2018-10-25 CN CN201811246171.7A patent/CN109400424B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954526A (en) * | 1971-02-22 | 1976-05-04 | Thiokol Corporation | Method for making coated ultra-fine ammonium perchlorate particles and product produced thereby |
| CN101982721A (en) * | 2010-10-13 | 2011-03-02 | 宜宾北方川安化工有限公司 | Method for coating grains |
| CN104276910A (en) * | 2013-07-22 | 2015-01-14 | 湖北航天化学技术研究所 | Process for forming burning restriction layer of explosive column of gas generating agent |
| CN106589650A (en) * | 2016-12-27 | 2017-04-26 | 郑州源冉生物技术有限公司 | Fine-performance plastic material and preparation method thereof |
| CN207746043U (en) * | 2017-09-29 | 2018-08-21 | 中国航天科技集团公司川南机械厂 | One kind automatic coating unit of powder column containing energy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109400424B (en) | 2020-10-09 |
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