CN105855145A - Engine lining layer solvent-free spray molding process - Google Patents
Engine lining layer solvent-free spray molding process Download PDFInfo
- Publication number
- CN105855145A CN105855145A CN201610202245.1A CN201610202245A CN105855145A CN 105855145 A CN105855145 A CN 105855145A CN 201610202245 A CN201610202245 A CN 201610202245A CN 105855145 A CN105855145 A CN 105855145A
- Authority
- CN
- China
- Prior art keywords
- lining
- spray
- engine
- lining layer
- spraying
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
Abstract
The invention relates to an engine lining layer solvent-free spray molding process. The process comprises the steps of preparation before engine spraying, preheating, spraying of a lining layer, centrifugal precuring of the lining layer, detection of the appearance and thickness of the lining layer and protection of qualified products. According to the process, a high-speed rotary spray gun is used for conducting lining layer coating on the inner surface of an engine. By means of huge centrifugal force generated from high-speed rotation, slurry is atomized through circumferential spray holes in the surface of a spray head and evenly sprayed on the annular surface of the engine; a servo mechanism is used for controlling the axial moving speed of the spray gun so as to control the thickness of the sprayed lining layer. After centrifugal precuring molding of the lining layer, a white light spectrum confocal thickness gauge is used for conducting nondestructive testing on the thickness of the lining layer. Through the process provided by the invention, the manufacturing accuracy and efficiency of the lining layer of the engine can be greatly improved, and the uniformity of the product quality is improved. Meanwhile, during the production process, the lining layer does not need to be diluted with a solvent, the pollution of the solvent to the environment is avoided, and the production cost is lowered.
Description
Technical field
The invention belongs to solid engines lining manufacturing technology field, be specifically related to a kind of lining forming method.
Background technology
Lining is one of structure member in Solid Rocket Motor combustion chamber, be positioned at heat insulation layer and propellant charge it
Between, thickness is between 0.3mm ~ 1.0mm, primarily serves the bonding effect of heat insulation layer and propellant.Lining is a kind of polyurethanes
Macromolecular material, is high-viscosity adhesive before solidification, and poor fluidity becomes elastomeric material after solidification.Lining moulding process bag
Including, prepare slurry, be coated with on heat insulation layer surface, before powder charge, precuring and powder charge are with steps such as propellant solidifications.
Have centrifuging process, manual blade coating, high pressure solvent that the coating process of lining is conventional at present spray and machinery blade coating.Right
There are, in manual knife coating procedure, the quality problems that lining local thickness is out of control, the bonding quality of heat insulation layer with propellant is produced not
Profit impact, production efficiency is low, and operator directly contacts lining slurry, there is bigger Occupational Disease Hazards.Employing high pressure solvent sprays
It is coated with, uses a large amount of solvent to exist and pollute environment, increase production cost.
Summary of the invention
For solving the problem of above-mentioned existence, the invention discloses a kind of engine lining solvent-free spray mo(u)lding technique side
Method, comprises the following steps:
(1) prepare before engine spraying: check motor body surfaces externally and internally superficial appearance, heat insulation layer bonding quality, just confirming
Chang Hou, head-tail installs the centrifugal frock of spraying additional；
(2) preheating: motor body is placed on centrifugal dolly and pushes baking oven temperature 50 C ~ 60 DEG C on request to carry out preheating 30
Minute；
(3) spraying lining: the lining configured loads the material storage tube of flush coater, carries out degasification, and spray boom stretches into enclosure interior, housing
Rotating, High Rotation Speed spray gun follow procedure sets and from head, lining is sprayed to afterbody, and after spraying terminates, spray boom exits baking oven；
(4) lining is centrifuged precuring: housing is under setting speed, and temperature, time are centrifuged precuring on request；
(5) lining outward appearance and Thickness sensitivity: test to the lining after precuring is apparent, it is desirable to lining color is uniform, without gas
Hole, drain spray or sagging defect.Thickness gauge is stretched into enclosure interior, uniformly takes three positions, each position along pipe range direction
Four points that test is distributed uniformly and circumferentially use the confocal method of white-light spectrum to carry out nondestructive thickness measuring；
(6) protection of qualified products: engine is taken out from centrifugal dolly, unloads protecting tool set-up end to end, load onto and protect end to end
Frock.
The spraying of described step (3) lining uses High Rotation Speed spray gun to carry out solvent-free spraying,.
Described step (5) lining thickness measuring uses the confocal method of white-light spectrum to carry out Non-Destructive Testing.
The equipment that the present invention provides, has the advantages that
1. can pass through programme-control oven temperature, centrifugal rotational speed, spray gun translational speed, spray gun spraying flow, spray boom is at baking oven
Turnover, accomplish the automatic moulding of engine lining, greatly improve lining shaping automatization level, lining make precision with
Efficiency, improves the uniformity of product quality.
2. in production process lining without using solvent to be diluted, it is to avoid the solvent pollution to environment, reduce and produce
Cost.
3. use the confocal method of white-light spectrum to carry out Non-Destructive Testing, solve preforming rear lining and can not carry out nondestructive thickness measuring
Problem, it is ensured that the quality of lining.
Accompanying drawing explanation
Fig. 1 is one engine lining of the present invention solvent-free spray mo(u)lding process method flow chart.
Specific implementation method
Below in conjunction with detailed description of the invention, it is further elucidated with the present invention.
(1) prepare before engine spraying: check motor body surfaces externally and internally superficial appearance, heat insulation layer bonding quality, really
After recognizing normally, head-tail installs the centrifugal frock of spraying additional；
(2) preheating: motor body is placed on centrifugal dolly and pushes baking oven temperature on request and preheats；
(3) spraying lining: the material storage tube of fourth hydroxyl B703-4 lining loading flush coater configure, carries out degasification, by flush coater and
Centrifugal dolly docking, spray boom stretches into enclosure interior, and housing rotates, and spray gun rotates, time delay 2 seconds, and spray pump starts for coating, time delay
3 ~ 5 seconds (coating is fully atomized), spraying dolly starts to retreat, and completes interior engine surface spraying in fallback procedures.Work as spray gun
Stretching out engine afterbody 100mm, spray boom stops, and spray pump stops for coating simultaneously, and after time delay 2 seconds, air motor quits work,
After spraying terminates, spray boom exits baking oven；
(4) lining is centrifuged precuring: housing, under setting speed, at a temperature of 70 DEG C ~ 80 DEG C, centrifugal is carried out for 2 hours ~ 3 hours
Precuring；
(5) lining outward appearance and Thickness sensitivity: test to the lining after precuring is apparent, it is desirable to lining color is uniform, without gas
Hole, drain spray or sagging defect.Thickness gauge is stretched into enclosure interior, uniformly takes three positions, each position along pipe range direction
Four points that test is distributed uniformly and circumferentially use the confocal method of white-light spectrum to carry out nondestructive thickness measuring；
(6) protection of qualified products: engine is taken out from centrifugal dolly, unloads protecting tool set-up end to end, load onto and protect end to end
Frock.
Present invention process, lining spraying is to utilize high speed pneumatic motor to drive shower nozzle High Rotation Speed, at huge centrifugal force
Under effect, high viscosity (5Pa.s ~ 15Pa.s) lining is atomized by the spray orifice on shower nozzle, and table in high fast direction engine
Face, greatly improves precision and the efficiency of lining coating；During spraying, lining is diluted without adding solvent, reduces and produces into
This, it is to avoid the solvent pollution to environment.
Present invention process, the preforming rear thickness of lining uses the confocal thickness measuring of white-light spectrum to carry out lossless inspection, and Spectral Confocal is surveyed
Displacement information is transformed in wavelength information by amount principle, draws tested displacement by spectral measurement, the adaptation to measured surface
Property is higher, and insensitive to characteristics such as measured surface inclination, roughness, processing texture and colors, its certainty of measurement reaches sub-micron
Level.
Describe the present invention the most by way of example, but the invention is not restricted to above-mentioned specific embodiment, also include
The technical scheme being made up of above technical characteristic.
Claims (7)
1. an engine lining solvent-free spray mo(u)lding process, it is characterised in that comprise the following steps:
(1) prepare before engine spraying: check motor body surfaces externally and internally superficial appearance, heat insulation layer bonding quality, just confirming
Chang Hou, head-tail installs the centrifugal frock of spraying additional；
(2) preheating: motor body is placed on centrifugal dolly and pushes baking oven temperature on request and preheats；
(3) spraying lining: the lining configured loads the material storage tube of flush coater, carries out degasification, and spray boom stretches into enclosure interior, housing
Rotating, spray gun follow procedure sets and from head, lining is sprayed to afterbody, and after spraying terminates, spray boom exits baking oven；
(4) lining is centrifuged precuring: housing is under setting speed, and temperature, time are centrifuged precuring on request；
(5) lining outward appearance and Thickness sensitivity: test to the lining after precuring is apparent, it is desirable to lining color is uniform, without gas
Hole, drain spray or sagging defect；Thickness gauge is stretched into enclosure interior, uniformly takes three positions, each position along pipe range direction
Four points that test is distributed uniformly and circumferentially carry out lossless survey and detect；
(6) protection of qualified products: engine is taken out from centrifugal dolly, unloads protecting tool set-up end to end, load onto and protect end to end
Frock.
2., according to the engine lining solvent-free spray mo(u)lding process described in claim 1, it is characterized in that described step (2)
Temperature 50 C ~ 60 DEG C carry out preheating 30 minutes on request.
3., according to the engine lining solvent-free spray mo(u)lding process described in claim 1, it is characterized in that described step (3)
Lining spraying uses High Rotation Speed spray gun to spray.
4., according to the engine lining solvent-free spray mo(u)lding process described in claim 1, it is characterized in that described step (3)
The fourth hydroxyl B703-4 lining configured loads the material storage tube of flush coater, carries out degasification, is docked with centrifugal dolly by flush coater, spray boom
Stretching into enclosure interior, housing rotates, and spray gun rotates, time delay 2 seconds, and spray pump starts for coating, time delay 3 ~ 5 seconds, the abundant mist of coating
Changing, spraying dolly starts to retreat, and completes interior engine surface spraying in fallback procedures.
5., according to the engine lining solvent-free spray mo(u)lding process described in claim 4, it is characterized in that described step (3)
When spray gun stretches out engine afterbody 100mm, and spray boom stops, spray pump stops for coating simultaneously, and after time delay 2 seconds, air motor stops
Only work, after spraying terminates, spray boom exits baking oven.
6., according to the engine lining solvent-free spray mo(u)lding process described in claim 1, it is characterized in that described step (4)
At a temperature of 70 DEG C ~ 80 DEG C, centrifugal within 2 ~ 3 hours, carry out precuring.
7., according to the engine lining solvent-free spray mo(u)lding process described in claim 1, it is characterized in that described step (5)
Lining thickness measuring uses the confocal method of white-light spectrum to carry out Non-Destructive Testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202245.1A CN105855145B (en) | 2016-04-01 | 2016-04-01 | Solvent-free spraying forming process method for engine lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202245.1A CN105855145B (en) | 2016-04-01 | 2016-04-01 | Solvent-free spraying forming process method for engine lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105855145A true CN105855145A (en) | 2016-08-17 |
| CN105855145B CN105855145B (en) | 2020-12-22 |
Family
ID=56626688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610202245.1A Active CN105855145B (en) | 2016-04-01 | 2016-04-01 | Solvent-free spraying forming process method for engine lining |
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| CN (1) | CN105855145B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493051A (en) * | 2016-11-30 | 2017-03-15 | 成都叮当自动化设备有限公司 | A kind of engine lining spraying method |
| CN106694341A (en) * | 2016-11-30 | 2017-05-24 | 成都叮当自动化设备有限公司 | Method for repairing damage surface of engine lining |
| 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 |
| CN108194228A (en) * | 2017-12-29 | 2018-06-22 | 湖北航天化学技术研究所 | Solid propellant rocket lining is without precuring forming method |
| CN108644029A (en) * | 2018-05-11 | 2018-10-12 | 江西航天经纬化工有限公司 | A kind of small-bore solid rocket motor liner centrifugal device |
| CN113117926A (en) * | 2021-04-16 | 2021-07-16 | 河南中孚高精铝材有限公司 | Control method for oiling aluminum alloy tank strip material at initial starting stage of high-speed trimming line |
| CN114184129A (en) * | 2021-10-25 | 2022-03-15 | 上海航天化工应用研究所 | Engine lining thickness measuring device with two head bands closing in |
| CN115216216A (en) * | 2022-07-22 | 2022-10-21 | 湖北三江航天江河化工科技有限公司 | Integrated material for spraying thermal insulation/lining layer on solid engine grain and forming method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4736684A (en) * | 1984-02-10 | 1988-04-12 | Thiokol Corporation | Delayed quick cure rocket motor liner |
| CN104596428B (en) * | 2013-10-31 | 2018-03-27 | 北京信息科技大学 | White light gauge head based on Spectral Confocal and trigonometry principle |
-
2016
- 2016-04-01 CN CN201610202245.1A patent/CN105855145B/en active Active
Cited By (12)
| 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 |
| CN106493051A (en) * | 2016-11-30 | 2017-03-15 | 成都叮当自动化设备有限公司 | A kind of engine lining spraying method |
| CN106694341A (en) * | 2016-11-30 | 2017-05-24 | 成都叮当自动化设备有限公司 | Method for repairing damage surface of engine lining |
| CN108194228A (en) * | 2017-12-29 | 2018-06-22 | 湖北航天化学技术研究所 | Solid propellant rocket lining is without precuring forming method |
| CN108194228B (en) * | 2017-12-29 | 2019-11-15 | 湖北航天化学技术研究所 | Solid propellant rocket lining is without precuring forming method |
| CN108644029A (en) * | 2018-05-11 | 2018-10-12 | 江西航天经纬化工有限公司 | A kind of small-bore solid rocket motor liner centrifugal device |
| CN113117926A (en) * | 2021-04-16 | 2021-07-16 | 河南中孚高精铝材有限公司 | Control method for oiling aluminum alloy tank strip material at initial starting stage of high-speed trimming line |
| CN113117926B (en) * | 2021-04-16 | 2022-04-22 | 河南中孚高精铝材有限公司 | Control method for oiling aluminum alloy tank strip material at initial starting stage of high-speed trimming line |
| CN114184129A (en) * | 2021-10-25 | 2022-03-15 | 上海航天化工应用研究所 | Engine lining thickness measuring device with two head bands closing in |
| CN114184129B (en) * | 2021-10-25 | 2023-11-10 | 上海航天化工应用研究所 | Two-end engine lining thickness measuring device with closing-in |
| CN115216216A (en) * | 2022-07-22 | 2022-10-21 | 湖北三江航天江河化工科技有限公司 | Integrated material for spraying thermal insulation/lining layer on solid engine grain and forming method |
| CN115216216B (en) * | 2022-07-22 | 2023-09-08 | 湖北三江航天江河化工科技有限公司 | Integrated material for spraying heat insulation/lining on solid engine grain and forming method |
Also Published As
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|---|---|
| CN105855145B (en) | 2020-12-22 |
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