CN101982721B - Method for coating grains - Google Patents
Method for coating grains Download PDFInfo
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- CN101982721B CN101982721B CN 201010505695 CN201010505695A CN101982721B CN 101982721 B CN101982721 B CN 101982721B CN 201010505695 CN201010505695 CN 201010505695 CN 201010505695 A CN201010505695 A CN 201010505695A CN 101982721 B CN101982721 B CN 101982721B
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- powder column
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- grain
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Abstract
The invention discloses a method for coating grains, which comprises the following steps: 1) putting fluid materials having vicidity as coating agent on a working platform, respectively connecting the two ends of a grain with a rotator tool in a mode of dismountable connection, and putting the grain and the rotator tool on the working platform, wherein the maximum overall diameter of the rotator tool is greater than the overall diameter of the grain; 2) repeatedly rolling the grain and the rotator tool on the working platform so as to ensure that the surfaces of the grain required to be coated repeatedly pass through the fluid materials and are touched with the fluid materials until the coating agent having vicidity are uniformly adhered to the surfaces of the grain required to be coated, controlling the thickness of a coating layer by a gap between the tool and the working platform; and 3) lifting the grain and the rotator tool, taking down the rotator tool, and putting the grain on a medicine-cooling rack to dry so as to complete the coating of the grain. The invention has the advantages of high production efficiency and easy operation, and the thickness, straightness and circular run out of the coating layer are meet the requirements for industry quality, and the coating materials are saved.
Description
Technical field
The present invention relates to a kind of powder column, the particularly method for coating of rocket class emission powder column.
Background technology
Along with the raising of civil rocket to the requirement of propellant tactical qualities, in order to make powder charge obtain certain specific combustion law, the selection of depending merely on Types of Medicine can not achieve the goal, just need a kind of material that suppresses to burn, the rocket launching powder column is wrapped up, in order to obtain specific pressure-time, thrust-time graph, the material of this inhibition burning is called covering, it is coated on grain surface is called clad.Clad can also play certain heat-blocking action except controlling and regulate the powder charge combustion surfacearea, makes the propellant combustion gas directly not contact housing, therefore can suitably reduce the engine wall thickness, alleviates the weight of engine.at present the cladding process of powder column can be divided into: screw extrusion coats, casting coatings, the bonding coating of pressurizeing, voluble wrapping, dip and coat and brushing coating etc., still use casting to coat and the brushing coating and the coating of fluent material is now main, casting coats the coating that is mainly used in the complicated shape powder column, its technique comparatively complexity and efficient lower, brushing coats the coating that is used for simpler Types of Medicine, as cylindrical grain, it is pure manual method of operating, although its technique is simple, but the efficient difference of its production of difference of operative employee's qualification is very large, general production efficiency is lower, and be mainly that qualification by operating personnel decides to the control that coats quality, the quality index of clad mainly contains: thickness, linearity, the circle beating degree, to decide by the concentration of the covering of preparation and the collocation of weight to the control of coating thickness, before coating, therefore every cover powder column all must weigh to covering, be not easy to operation, the linearity index needed graduated cylinder to detect owing to being that manually-operated is controlled, and by the condition of production over several years, the linearity of artificial brushing can not 100% reaches quality standards, the circle beating degree presents larger difference according to the difference of operative employee's qualification, and the average qualification rate after it coats can only reach 40%, and return of goods rate is higher, and due to the uncontrollable clad external diameter of manual operations, and manual operations the time sheds the waste that causes, and causes the unhelpful consumption rate of clad material higher.
Summary of the invention
The object of the invention is to solve the deficiency on prior art in industry, a kind of method for coating of new powder column is provided, it has advantages of that production efficiency is high, convenient operation, and the thickness of clad, linearity, circle beating degree all satisfy the industry quality requirement, and save clad material.
For achieving the above object, the method for coating of a kind of powder column of the present invention, it is characterized in that comprising the following steps: 1) will be positioned on workbench as the fluent material that covering has toughness, be connected with single-revolution body frock respectively by the two ends of dismountable connected mode with powder column, the maximum outside diameter of revolving body frock is greater than the external diameter of powder column, and powder column and revolving body frock are positioned on workbench; 2) powder column and revolving body frock are rolled on workbench repeatedly, make the surface that needs on powder column to coat repeatedly through fluent material and contact with it, be attached to equably on the surface that powder column need to coat until have the covering of toughness, by the gap of frock and workbench, control the thickness of clad; 3) powder column and revolving body frock are mentioned, take off frock, powder column is put into airing on medicine of a cold nature frame, complete the coating to powder column.
Above-mentioned dismountable connected mode can be for being threaded;
Above-mentioned dismountable connected mode also can be tight fit connection;
Operation principle of the present invention is: utilize the double action of solvent to immersional wetting and the covering intermolecular force of powder column in fluent material, make covering can be adsorbed to grain surface, the side that utilizes gap, the rotary fixture of workbench and powder column to complete powder column coats, owing to being a kind of automanual method of operating, and lower to the requirement of operative employee's qualification, have advantages of that production efficiency is high, convenient operation; As long as the uniformity of assurance two frock external diameters and axiality, cooperating platform glacing flatness, linearity, the circle beating degree that just can guarantee clad satisfy quality requirement, adding only needs the concentration of covering that control is joined just can control the thickness of clad, do not need covering is weighed, controlled and shed the waste that causes when having avoided hand-manipulated due to the clad external diameter, saved clad material.
as a further improvement on the present invention, in step 2) described in the surface that needs on powder column to coat through the process of fluent material and contact with it be repeatedly: the part on the surface that powder column need to be coated is rotated in having the covering of toughness equably, then progressively increase the contact-making surface that needs clad surface on covering and powder column, utilize the internal friction of covering to arrive grain surface on covering, make covering be attached to equably on grain surface through multiple rotary, reduce gradually again the contact area of powder column and covering, reduce simultaneously rotary speed and make the thicker covering levelling of powder column outer surface, can make the easier grain surface that is attached to uniformly of covering, and the fineness of raising powder column clad surface.
In sum, the present invention has advantages of that production efficiency is high, convenient operation, and the thickness of clad, linearity, circle beating degree all satisfy quality requirement, and save clad material.
Description of drawings
Fig. 1 is the working state figure of the embodiment of the present invention one.
Fig. 2 is the working state figure of the embodiment of the present invention two.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Embodiment one
take eight kilometers civil rocket emission powder columns as example, the method for coating of this powder column, as shown in Figure 1, comprise the following steps: 1) will be positioned on workbench 2 as the fluent material that covering 1 has toughness, the two ends of powder column 3 are equipped with screw thread, and two revolving body frocks 4 are equipped with screw, are connected with single-revolution body frock 4 respectively by the two ends of screw thread with powder column 3, the maximum outside diameter of revolving body frock 4 is greater than the external diameter of powder column, and powder column 3 and revolving body frock 4 are positioned on workbench 2, 2) powder column 3 and revolving body frock 4 are rolled on workbench 2 repeatedly, need the part on the surface of coating to rotate equably in the covering 1 with toughness powder column 3, then progressively increase the contact-making surface that needs clad surface on covering 1 and powder column 3, utilize the internal friction of covering 1 to arrive grain surface on covering 1, make covering 1 be attached to equably on powder column 3 surfaces through multiple rotary, reduce gradually again the contact area of powder column 3 and covering 1, reduce simultaneously rotary speed and make the thicker covering levelling of powder column outer surface, can make covering 1 easier powder column 3 surfaces of being attached to uniformly, and the fineness of raising powder column clad surface, 3) powder column 3 and revolving body frock 4 are mentioned, take off frock 4, powder column 3 is put into airing on medicine of a cold nature frame, complete the coating to powder column 3.
Operation principle of the present invention is: utilize the double action of solvent to immersional wetting and the covering intermolecular force of powder column 3 in fluent material, make covering 1 can be adsorbed to powder column 3 surfaces, the side that utilizes workbench 2 and gap, the rotary fixture 4 of powder column 3 to complete powder column 3 coats, owing to being a kind of automanual method of operating, and lower to the requirement of operative employee's qualification, have advantages of that production efficiency is high, convenient operation; As long as the glacing flatness of the uniformity of assurance two frock 4 external diameters and axiality, cooperating platform 2, linearity, the circle beating degree that just can guarantee clad conform to quality requirements, significantly improve qualification rate, adding only needs the concentration of covering 1 that control is joined just can control the thickness of clad, do not need covering 1 is weighed, controlled and shed the waste that causes when having avoided hand-manipulated due to the clad external diameter, saved clad material.
Embodiment two
Take six kilometers civil rocket emission powder columns as example, as shown in Figure 2, the method for coating of this powder column only is with the difference of embodiment one: the two ends of powder column 5 are connected by friction tight axis hole structure with two revolving body frocks 6, can realize dismountable connection equally, all the other steps are all identical with embodiment one, can reach identical technique effect equally.
Claims (4)
1. the method for coating of a powder column, it is characterized in that comprising the following steps: 1) will be positioned on workbench as the fluent material that covering has toughness, be connected with single-revolution body frock respectively by the two ends of dismountable connected mode with powder column, the maximum outside diameter of revolving body frock is greater than the external diameter of powder column, and powder column and revolving body frock are positioned on workbench; 2) powder column and revolving body frock are rolled on workbench repeatedly, make the surface that needs on powder column to coat repeatedly through fluent material and contact with it, be attached to equably on the surface that powder column need to coat until have the covering of toughness, by the gap of frock and workbench, control the thickness of clad; 3) powder column and revolving body frock are mentioned, take off frock, powder column is put into airing on medicine of a cold nature frame, complete the coating to powder column.
2. the method for coating of a kind of powder column as claimed in claim 1, is characterized in that described dismountable connected mode is for being threaded.
3. the method for coating of a kind of powder column as claimed in claim 1, is characterized in that described dismountable connected mode is tight fit connection.
4. as the method for coating of the arbitrary described a kind of powder column of claims 1 to 3, it is characterized in that step 2) described in the surface that needs on powder column to coat through the process of fluent material and contact with it be repeatedly: the part on the surface that powder column need to be coated is rotated in having the covering of toughness equably, then progressively increase the contact-making surface that needs clad surface on covering and powder column, utilize the internal friction of covering to arrive grain surface on covering, make covering be attached to equably on grain surface through multiple rotary, reduce gradually again the contact area of powder column and covering, reduce simultaneously rotary speed and make the thicker covering levelling of powder column outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010505695 CN101982721B (en) | 2010-10-13 | 2010-10-13 | Method for coating grains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010505695 CN101982721B (en) | 2010-10-13 | 2010-10-13 | Method for coating grains |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101982721A CN101982721A (en) | 2011-03-02 |
| CN101982721B true CN101982721B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010505695 Active CN101982721B (en) | 2010-10-13 | 2010-10-13 | Method for coating grains |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107537749A (en) * | 2016-10-13 | 2018-01-05 | 湖北航天化学技术研究所 | Rocket engine solid propellant coats the automatic knife coating procedure of lining |
| CN106543808A (en) * | 2016-12-09 | 2017-03-29 | 湖北航天化学技术研究所 | It is a kind of to improve the clad silane coupling agent bonding with gas generator propellant powder column and adhering method |
| CN109400424B (en) * | 2018-10-25 | 2020-10-09 | 山西北方兴安化学工业有限公司 | Method for coating tubular propellant grain by liquid medium |
| CN111077268A (en) * | 2019-12-09 | 2020-04-28 | 上海新力动力设备研究所 | Inspection platform and method for coating quality of liquid heat insulating layer of solid engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000054688A (en) * | 2000-06-15 | 2000-09-05 | 이춘봉 | Method that is uniformly maintained the gun barrel with staggered combustion through coating of the charging gunpowder |
| US7631787B1 (en) * | 2008-11-17 | 2009-12-15 | Lee Richard J | Powder metering tube for powder measuring device |
| CN201421301Y (en) * | 2009-05-22 | 2010-03-10 | 威海乾震化工科技有限公司 | Delay composition lead pipe charging device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7934454B2 (en) * | 2003-11-12 | 2011-05-03 | Kee Action Sports I Llc | Projectile, projectile core, and method of making |
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2010
- 2010-10-13 CN CN 201010505695 patent/CN101982721B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000054688A (en) * | 2000-06-15 | 2000-09-05 | 이춘봉 | Method that is uniformly maintained the gun barrel with staggered combustion through coating of the charging gunpowder |
| US7631787B1 (en) * | 2008-11-17 | 2009-12-15 | Lee Richard J | Powder metering tube for powder measuring device |
| CN201421301Y (en) * | 2009-05-22 | 2010-03-10 | 威海乾震化工科技有限公司 | Delay composition lead pipe charging device |
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| Publication number | Publication date |
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| CN101982721A (en) | 2011-03-02 |
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