CN108638544B - Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending - Google Patents
Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending Download PDFInfo
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- CN108638544B CN108638544B CN201810336138.7A CN201810336138A CN108638544B CN 108638544 B CN108638544 B CN 108638544B CN 201810336138 A CN201810336138 A CN 201810336138A CN 108638544 B CN108638544 B CN 108638544B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
- B29C73/10—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements using patches sealing on the surface of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/007—Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/30—Apparatus or accessories not otherwise provided for for local pressing or local heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/30—Apparatus or accessories not otherwise provided for for local pressing or local heating
- B29C73/32—Apparatus or accessories not otherwise provided for for local pressing or local heating using an elastic element, e.g. inflatable bag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
- B29C2073/262—Apparatus or accessories not otherwise provided for for mechanical pretreatment for polishing, roughening, buffing or sanding the area to be repaired
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
- B29C2073/266—Apparatus or accessories not otherwise provided for for mechanical pretreatment for cutting out an undercut for anchoring the repairing material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/749—Motors
Abstract
The invention discloses a kind of Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending, pretreatment-preparation repairing matches adhesive-repairing with ripe film-ripe Film processing-of heat insulation layer defect processing-repairing.Guarantee to repair solid engines internal insulation surface defect by using the mode of normal temperature cure, guarantee that the engine of internal insulation defect can continue normal use, solves the problems, such as to cause because of internal insulation defect engine normal use or can not scrap；Internal insulation thickness and bonding surface intensity after repairing meet Solid Rocket Motor Fiber Composite Material Shell internal insulation requirement, the air-tightness and ablation property for guaranteeing fiber winding shell after repairing simultaneously are suitable for depth of defect and are less than 5mm, defect area less than 5000mm2Repairing.
Description
Technical field
The invention belongs to solid engines fiber winding shell heat insulating construction production fields, in particular to a kind of solid-rocket
Engine fiber winding shell internal insulation cold bonding method for repairing and mending.
Background technique
Solid propellant rocket is a kind of rocket power plant of superior performance, by combustion chamber, propellant, igniter and spray
The components such as pipe composition.Combustion chamber is the container for storing propellant, while providing the space of burning, to bear 3000 DEG C of high temperature with
Upper, high-pressure gas stream washes away.Combustion chamber internal insulation is a heat-insulated protection material asked for being placed on shell inner surface Yu propellant
Material, major function are to take away most of heat by continuous decomposition, the ablation of itself to alleviate high-temperature fuel gas temperature to shell
Transmission speed, avoid shell from reaching the temperature of crisis structural intergrity, guarantee that engine often works.Chamber structure it is complete
Property and reliability, depend not only on the performance of case material, depend greatly on powder charge procapsid heat-insulating material performance
Advance and moulding process reliability.
Currently, hand paste is still the method continued to use of solid engines insulation formable layer tradition, the economy easy to operate,
Have a wide range of application, needs to have matching adhesive, lining, propellant material and fabricating technology.Due to being insulated
It is influenced in layer manufacturing process by unstable factors such as environmental condition, film size, core model quality, manual operationss, in manufacture, processing
Be likely to occur in the process lack the fifth wheels such as material, impurity, interfacial detachment or due in thermal insulation construction technology misoperation cause to be insulated
After shell solidifies the defects of the separation in material local bonding face.Defect generally has unsticking, bulge, hollow, alice, discounting, pit
Phenomena such as, drawbacks described above inevitably influences the normal ablation of heat insulation layer, and processing may be degraded in engine under serious conditions, to guarantee
Solid engines normal use carries out repairing to defective heat insulation layer and is inevitable.
Summary of the invention
Present invention aim to the deficiencies of the above-mentioned technology of needle, provide a kind of pair of surface defect and are repaired and protected
Insulation in the Solid Rocket Motor Fiber Composite Material Shell that internal insulation thickness and bonding surface intensity after card repairing are met the requirements
Layer cold bonding method for repairing and mending.
To achieve the above object, the Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding designed by the present invention is repaired
Compensating method, comprising the following steps:
1) it pre-processes
Measure the thickness and area of internal insulation defect；
2) ripe film is repaired in preparation
It is 2a) thin logical: to adjust the roller spacing of rubber mixing machine to 0.2~0.6m, heat-insulating material green glue stock is carried out by rubber mixing machine
Bao Tong, and thin logical number is 3~4 times；What heat-insulating material green glue stock was selected is insulation identical with engine fiber winding shell
Material green glue stock；
2b) slice: adjustment rubber mixing machine roller spacing carries out slice by required thickness size and different pre- of multiple thickness is made
Raw stock is used in repairing；
2c) cut-parts: the different pre- repairing of thickness is cut out into thickness of corresponding size by the size of flat plate mold with raw stock
Different repairing raw stocks is spent, the different repairing of thickness is respectively put into the flat plate mold of corresponding depth of cavity with raw stock
In；
2d) vulcanize: the flat plate mold for installing repairing raw stock being put into vulcanizer and is vulcanized
2e) depanning: to flat plate mold temperature≤70 DEG C, flat plate mold is opened, takes out and repairs ripe film in advance, go deburring
The ripe film of repairing of different-thickness is made；
3) internal insulation defect processing
It 3a) polishes: polishing the internal insulation blemish surface that need to be repaired, blemish surface polishes area greater than defect table
Face position and exceed defect boundary 30mm, for being polished at Defect Edge using emery cloth, while Defect Edge is polished
The laminating degree of repairing film and defective locations can be improved in groove, the groove of production, guarantees rounding off；
It 3b) cleans: the blemish surface position after polishing being cleaned with ethyl acetate or acetone, and is dried；
4) ripe Film processing is repaired
4a) repairing is polished with ripe film: is polished with ripe film two sides the repairing prepared, while is greater than to thickness
The repairing of 1.0mm polish groove with ripe film surrounding, bevelled edge 5~10mm of width, with a thickness of 0.4~0.6mm at groove；
It 4b) cuts: repairing ripe film after cutting out the cutting of correspondingly-sized according to blemish surface area, while to cutting
Repair afterwards and carry out mill groove processing with the boundary of ripe film one side, and select one with a thickness of be not more than 1.0mm the ripe glue of repairing
Piece cuts out 30mm bigger than blemish surface area2Cutting after upper layer repair ripe film, the covering for top layer's film；
4c) clean: upper layer repairing uses ethyl acetate or third with ripe film after repairing ripe film after cutting and cut
Ketone is cleaned, and is dried；
5) match adhesive
Prepare cold setting adhesive WAGU-90；Prepared adhesive uses in 3h, more than needing again after validity period
It prepares；WAGU-90 adhesive is the polyurethane adhesive of a kind of energy normal temperature cure, this adhesive shows pole when being bonded film
Good tack, while adhesive strength with higher, ripe shear strength >=1.0MPa of ripe/EPDM of EPDM,
Ripe pull-off strength >=1.5MPa of ripe/EPDM of EPDM, ripe shear strength of ripe/nitrile rubber of nitrile rubber >=
1.5MPa, ripe pull-off strength >=2.0MPa of ripe/nitrile rubber of nitrile rubber；
6) it repairs
6a) brush coating: being brushed prepared adhesive in internal insulation blemish surface position using hairbrush and is repaired after cutting
It mends with ripe film one side, hangs 10~30 minutes, then carry out brushing second time, then hang 5~after twenty minutes；
6b) patch: repairing after cutting is carried out with ripe film according to the shape to match with blemish surface and repairing position
Bonding, when bonding, are fixed from side, push to the other side, use roller compacting discharge bubble after fixed；Most by multilayer repair
It is repaired after the cutting of guarantee repairing eventually and fills up defective locations with ripe film,
After defective locations are filled, ripe film upper surface brush coating is repaired after cutting at most upper one layer, while beyond cutting
The ripe film boundaries 30mm of repairing afterwards, brush coating method then cover upper layer repairing after cutting with ripe film whole with step 6a)
The surface of a defect mending position；
6c) in one layer of release cloth of surface laying of blemish surface repairing position, pressurization, curing and demolding.
Further, in the step 1), internal insulation is adjusted before measuring the thickness and area of internal insulation defect and is repaired
Dust, the sundries mended environment temperature and relative humidity, clear up internal insulation blemish surface, wherein repairing environment temperature is 25 ±
10 DEG C, relative humidity≤75%.
Further, the step 2b) in, when slice, opens cooling water, cools down to the double roller of rubber mixing machine, and simultaneously
Double roller roller temperature is monitored, if roller temperature is more than 60 DEG C, the easy roll banding of film, film is shunk greatly after slice, and size not can guarantee, then stops
Piece is further continued for slice after cooling down.
Further, the step 2c) in, flat plate mold depth of cavity is divided into four classes: I class depth be 0.5~0.6mm,
II class depth is 1.0~1.1mm, III 1.5~1.6mm of class depth, IV 2.0~2.1mm of class depth.
Further, the step 2d) in, specific sulfidation is as follows:
EPDM internal insulation sulfuration process: 80 ± 5 DEG C are warming up to equipment, after keeping the temperature 20~30min, is forced into 3
~4MPa is continuously heating to 150 ± 5 DEG C, 80~90min of vulcanization time, powers off after vulcanization time, random cooling, decompression；
Or butyronitrile internal insulation sulfuration process: 80 ± 5 DEG C are warming up to equipment, after keeping the temperature 20~30min, is forced into 3
~4MPa is continuously heating to 135 ± 5 DEG C, 80~90min of vulcanization time, powers off after vulcanization time, random cooling, decompression.
Further, the step 2e) in, repairing film stock thickness and I~IV class flat plate mold depth of cavity one are a pair of
Answer, with a thickness of 0.5~0.65mm repairing with ripe film by being prepared with a thickness of 0.8mm repairing with raw stock, 0.8mm repairing with life
It is the flat plate mold of 0.5~0.6mm that film, which selects depth of cavity,；With a thickness of 1.0~1.15mm repairing with ripe film by thickness
It is prepared for 1.2mm repairing with raw stock, it is the flat plate mold of 1.0~1.1mm that 1.2mm repairing raw stock, which selects depth of cavity,；
With a thickness of 1.5~1.65mm repairing with ripe film by being prepared with a thickness of 1.8mm repairing with raw stock, 1.8mm repairing use raw rubber
It is the flat plate mold of 1.5~1.6mm that piece, which selects depth of cavity,；With a thickness of 2.0~2.15mm repairing with ripe film by with a thickness of
2.5mm repairing is prepared with raw stock, and it is the flat plate mold of 2.0~2.1mm that 2.5mm repairing raw stock, which selects depth of cavity,.
Further, in the step 5), according to component A: B component=100:(3~6) proportion, prepare normal temperature cure
100~300g of adhesive WAGU-90.
Further, it in the step 5), is stirred evenly after the completion of Adhesive using glass bar, and prepared glue
Stick uses in 3h, more than needing to prepare again after validity period.
Further, the step 6b) in, ripe film overall thickness principle is repaired after the cutting of repairing are as follows: guaranteeing to cut out
When repairing is greater than 0.1~0.5mm of depth of defect with ripe film overall thickness after cutting, reduces repair ripe film after cutting as far as possible
The number of plies, it is specific as follows:
If when depth of defect h≤0.5mm, being repaired using the film of 0.5~0.65mm thickness；
If when 0.5 < h of depth of defect≤1.0mm, being repaired using the film of 1.1~1.15mm thickness；
If when 1.0 < h of depth of defect≤1.5mm, being repaired using the film of 1.5~1.65mm thickness；
If when 1.5 < h of depth of defect≤2.0mm, being repaired using the film of 2.0~2.15mm thickness；
If when 2.0 < h of depth of defect≤2.5mm, using the film of one layer of 2.0~2.15mm+, mono- layer of 0.5~0.65mm thickness
It is repaired；
If when 2.5 < h of depth of defect≤3.0mm, using the film of one layer of 2.0~2.15mm+, mono- layer of 1.0~1.15mm thickness
It is repaired, is repaired afterwards using the film of three layers of 1.1~1.15mm thickness；
If when 3.0 < h of depth of defect≤3.5mm, being carried out using one layer of 2.0~2.15mm+, mono- layer of 1.5~1.65mm film
Repairing or three layers of 1.1~1.15mm+, mono- layer of 0.5~0.65mm thickness film carry out repair or；
If when 3.5 < h of depth of defect≤4.0mm, being repaired using 2 layers of 2.0~2.15mm or 1 layer of 2.0~2.15mm+
The film of 2 layers of 1.1~1.15mm thickness carry out repairing or；
If when 4.0 < h of depth of defect≤4.5mm, being repaired using 2 layers of 2.0~2.15mm+1 layer 0.5~0.65mm thickness,
Or the film of 1 layer of 2.0~2.15mm+2 layer 1.1~1.15mm+1 layer 0.5~0.65mm thickness carry out repairing or；
If when 4.5 < h of depth of defect≤5.0mm, carrying out repairing+1 layer of 1.1~1.15mm thickness using 2 layers of 2.0~2.15mm
Film repaired, or repaired using the film of 5 layers of 1.1~1.15mm thickness.
Further, the step 6c) in, detailed process is as follows:
Pressurization: cure under pressure is carried out to defective locations using vacuum bag method or sand pocket, uses vacuum bag method detailed process are as follows:
It is covered in the one circle sealant of film one week bonding of repairing, then by vacuum film along the trend of sealant, simultaneously
Vacuum tube is protruded into below film, and be bonded pipe is guaranteed into leakproofness with sealant；Vacuum tube and vaccum-pumping equipment phase
Even, vaccum-pumping equipment is opened, guarantee pressure is -0.05MPa, is vacuumized；
Solidification: normal temperature cure 24~36 hours or more under pressurised conditions；
Demoulding: cleaning sand pocket cleans up release cloth, completes internal insulation repairing；Or vaccum-pumping equipment is closed, it takes out
Vacuum tube, then film and sealant, release cloth are cleaned up, complete internal insulation repairing.
Compared with prior art, the present invention having the advantage that
1) guarantee to repair solid engines internal insulation surface defect by using the mode of normal temperature cure, guarantee
The engine of internal insulation defect can continue normal use, solve because internal insulation defect causes engine can not normal use
Or the problem of scrapping；
2) choose WAGU-90 adhesive, solve the problems, such as heat-insulating material room temperature adhesive strength for；
3) after repairing, solidify in internal insulation surface-pressure, guarantee the bonding matter between repair layer and internal insulation ontology
Amount；
4) internal insulation thickness and bonding surface intensity after repairing meet in Solid Rocket Motor Fiber Composite Material Shell absolutely
Thermosphere requirement, while guaranteeing the air-tightness and ablation property of fiber winding shell after repairing, it is less than suitable for depth of defect
5mm, defect area are less than 5000mm2Repairing.
Detailed description of the invention
Fig. 1 is internal insulation state photo figure after embodiment 1 is repaired；
Fig. 2 is internal insulation state photo figure after embodiment 2 is repaired.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below, convenient for more clearly understanding the present invention,
But limiting the invention for they.
It is small that Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending of the present invention is suitable for depth of defect
It is less than 5000mm in 5mm, defect area2Repairing.
Embodiment 1
1) it pre-processes
Internal insulation repairing environment temperature and relative humidity 1a) are adjusted, repairing environment temperature is 25 DEG C, relative humidity is
55%；
1b) clear up dust, the sundries of internal insulation blemish surface；
Plasticine 1c) is embedded in defective locations, then plasticine is taken out, measures the thickness and area of plasticine, measurement knot
Fruit is depth of defect and defect area, and depth of defect 1.4mm, defect area are 15mm × 180mm；
2) ripe film is repaired in preparation
It is 2a) thin logical: to adjust the roller spacing of rubber mixing machine to 0.2~0.6m, EPDM green glue stock is carried out by rubber mixing machine
Bao Tong, and thin logical number is 3~4 times；
2b) slice: adjustment rubber mixing machine roller spacing, it is pre- by multiple are made with a thickness of 1.8mm and 1.2mm size progress slice
Raw stock is used in repairing；Note: opening cooling water when slice, cool down to the double roller of rubber mixing machine, and monitors double roller roller temperature simultaneously,
If roller temperature is more than 60 DEG C, stops slice, slice is further continued for after cooling down；
2c) cut-parts: respectively will be with a thickness of the pre- repairing raw stock of 1.8mm and with a thickness of the pre- repairing raw rubber of 1.2mm
Piece cut out respectively 140mm × 200mm with a thickness of 1.8mm repairing raw stock and 140mm × 200mm with a thickness of 1.2mm
140mm × 200mm is put into depth of cavity with raw stock with a thickness of 1.2mm repairing as 1.0~1.1mm by repairing raw stock
Flat plate mold in, it is 1.5~1.6mm that 140mm × 200mm, which is put into depth of cavity with raw stock with a thickness of 1.8mm repairing,
Flat plate mold in；
2d) vulcanize: the flat plate mold for installing repairing raw stock in step 2c) being put into vulcanizer, in EPDM
Heat insulation layer sulfuration process: 80 ± 5 DEG C are warming up to equipment, after keeping the temperature 30min, 3~4MPa is forced into, is continuously heating to 150 ± 5
DEG C, vulcanization time 90min is powered off after vulcanization time, random cooling, decompression；
2e) depanning: to flat plate mold temperature≤70 DEG C, flat plate mold is opened, takes out and repairs ripe film in advance, go deburring
A thickness 1.5mm is made and repairs ripe film and a ripe film of thickness 1.0mm repairing；
3) internal insulation defect processing
It 3a) polishes: being polished using pneumatic grinding wheel or electric angle grinder the internal insulation blemish surface that need to be repaired, beaten
Flour milling product is not less than 35mm × 220mm, and blemish surface polishes area greater than blemish surface position and exceeds defect boundary 30mm, right
It is polished at Defect Edge using emery cloth, while groove is polished to Defect Edge, guarantee rounding off；
It 3b) cleans: the blemish surface position after polishing being cleaned with ethyl acetate or acetone, and is dried；
4) ripe Film processing is repaired
4a) repairing is polished with ripe film: using pneumatic grinding wheel or electric angle grinder to the ripe film two of the repairing prepared
Face is polished, while polishing groove with ripe film surrounding to repairing, bevelled edge 5~10mm of width, at groove with a thickness of
0.4~0.6mm；
4b) cut: according to blemish surface area by thickness 1.5mm repair with ripe film cut out one having a size of 15mm ×
The thickness 1.5mm of 180mm repairs ripe film after cutting, while carrying out mill slope with the boundary of ripe film one side to repairing after cutting
Mouth processing, and thickness 1.0mm repairing is cut out into thickness 1.0mm of the area not less than 35mm × 220mm with ripe film and is cut out
Ripe film, the covering for top layer's film are repaired after cutting；
4c) clean: repairing is equal with ripe film after repairing ripe film and thickness 1.0mm cutting after thickness 1.5mm is cut
It is cleaned, and is dried with ethyl acetate or acetone；
5) match adhesive
According to component A: B component=100:4 proportion prepares cold setting adhesive WAGU-90 about 100g, and adhesive is matched
It is stirred evenly after the completion of system using glass bar, and is used in three hours；
6) it repairs
6a) brush coating: prepared adhesive is brushed in internal insulation blemish surface position and thickness 1.5mm using hairbrush
Repairing is hung 20 minutes with ripe film one side after cutting, then brush second time, then hang after ten minutes；
6b) patch: repairing is with ripe film according to the shape and repairing to match with blemish surface after thickness 1.5mm is cut
Position is bonded, and when bonding is fixed from side, is pushed to the other side, uses roller compacting discharge bubble after fixed；And in thickness
It spends after 1.5mm is cut and repairs ripe film upper surface brush coating, ripe film boundaries are repaired after cutting beyond thickness 1.5mm in brush coating face
30mm, brush coating method is with step 6a), and repairing covers entire defect mending position with ripe film after then cutting thickness 1.0mm
The surface set；
6c) in one layer of release cloth of surface laying of blemish surface repairing position, for isolation of pressurizeing；It is specific as follows:
Pressurization: cure under pressure is carried out to defective locations using 15kg sand pocket；
Solidification: normal temperature cure 24~36 hours or more under pressurised conditions；
Demoulding: cleaning sand pocket cleans up release cloth, i.e. the repairing of completion internal insulation.
The present embodiment 1 carries out the internal insulation shear strength after internal insulation repairing and is greater than 1.0MPa, and pull-off strength is greater than
1.5MPa, layers cementing quality is good, under the examination of oxy-acetylene line ablation, does not occur the phenomenon that splitting, blistering.
The same period carries out the repairing of EPDM internal insulation using BD301 adhesive, and the tack of the adhesive is poor, room temperature
Can have tack after hanging 4h or 80 DEG C of preliminary drying 2h, the heat insulation layer shear strength after repairing is 0.82MPa, and pull-off strength is
1.14MPa。
Embodiment 2
1) it pre-processes
Internal insulation repairing environment temperature and relative humidity 1a) are adjusted, repairing environment temperature is 30 DEG C, relative humidity is
65%；
1b) clear up dust, the sundries of internal insulation blemish surface；
Plasticine 1c) is embedded in defective locations, then plasticine is taken out, measures the thickness and area of plasticine, measurement knot
Fruit is depth of defect and defect area, and depth of defect 3.8mm, defect area are 30mm × 40mm；
2) ripe film is repaired in preparation
It is 2a) thin logical: adjust the roller spacing of rubber mixing machine to 0.2~0.6m, butyronitrile green glue stock by rubber mixing machine carry out it is thin lead to,
And thin logical number is 3~4 times；
2b) slice: adjustment rubber mixing machine roller spacing, it is pre- by multiple are made with a thickness of 2.2mm and 1.2mm size progress slice
Raw stock is used in repairing；Note: opening cooling water when slice, cool down to the double roller of rubber mixing machine, and monitors double roller roller temperature simultaneously,
If roller temperature is more than 60 DEG C, stops slice, slice is further continued for after cooling down；
2c) cut-parts: respectively will be with a thickness of the pre- repairing raw stock of 2.2mm and with a thickness of the pre- repairing raw rubber of 1.2mm
Piece cut out respectively 140mm × 200mm with a thickness of 2.2mm repairing raw stock and 140mm × 200mm with a thickness of 1.2mm
140mm × 200mm is put into depth of cavity with raw stock with a thickness of 1.2mm repairing as 1.0~1.1mm by repairing raw stock
Flat plate mold in, it is 2.0~2.1mm that 140mm × 200mm, which is put into depth of cavity with raw stock with a thickness of 2.2mm repairing,
Flat plate mold in；
2d) vulcanize: the flat plate mold for installing repairing raw stock in step 2c) is put into vulcanizer, insulation in butyronitrile
Layer sulfuration process: being warming up to 80 ± 5 DEG C with equipment, after keeping the temperature 30min, be forced into 3~4MPa, be continuously heating to 135 ± 5 DEG C,
Vulcanization time 90min is powered off after vulcanization time, random cooling, decompression；
2e) depanning: to flat plate mold temperature≤70 DEG C, flat plate mold is opened, takes out and repairs ripe film in advance, go deburring
Required thickness 2.0mm is made and repairs ripe film and the ripe film of thickness 1.0mm repairing；
3) internal insulation defect processing
It 3a) polishes: being polished using pneumatic grinding wheel or electric angle grinder the internal insulation blemish surface that need to be repaired, beaten
Flour milling product is not less than 60mm × 70mm, and blemish surface polishes area greater than blemish surface position and exceeds defect boundary 30mm, right
It is polished at Defect Edge using emery cloth, while groove is polished to Defect Edge, guarantee rounding off；
It 3b) cleans: the blemish surface position after polishing being cleaned with ethyl acetate or acetone, and is dried；
4) ripe Film processing is repaired
4a) repairing is polished with ripe film: using pneumatic grinding wheel or electric angle grinder to the ripe film two of the repairing prepared
Face is polished, while polishing groove with ripe film surrounding to repairing, bevelled edge 5~10mm of width, at groove with a thickness of
0.4~0.6mm；
4b) cut: according to blemish surface area by thickness 2.0mm repair with ripe film cut out two having a size of 30mm ×
The thickness 2.0mm of 40mm repairs ripe film after cutting, while carrying out mill slope with the boundary of ripe film one side to repairing after cutting
Mouth processing, and thickness 1.0mm repairing is cut out after the thickness 1.0mm having a size of 50mm × 60mm is cut with ripe film and is repaired
Mend ripe film, the covering for top layer's film；
4c) clean: repairing is equal with ripe film after repairing ripe film and thickness 1.0mm cutting after thickness 2.0mm is cut
It is cleaned, and is dried with ethyl acetate or acetone；
5) match adhesive
According to component A: B component=100:4 proportion prepares cold setting adhesive WAGU-90 about 100g, and adhesive is matched
It is stirred evenly after the completion of system using glass bar, and is used in three hours；
6) it repairs
6a) brush coating: prepared adhesive is brushed in internal insulation blemish surface position and a Zhang Houdu using hairbrush
Repairing is hung 10 minutes with ripe film one side after 2.0mm is cut, then brush second time, then hang after five minutes；
6b) patch: will thickness 2.0mm cut after repairing with ripe film according to the shape to match with blemish surface with
Repairing position is bonded, and when bonding is fixed from side, is pushed to the other side, uses roller compacting discharge bubble after fixed；?
Thickness 2.0mm repairs ripe film rosy clouds surface after repairing ripe film upper surface and second thickness 2.0mm cutting after cutting
Brush coating stick, method hang repairing after after ten minutes again cutting second thickness 2.0mm and are bonded with ripe film with step 6a)
After being cut to first thickness 2.0mm above the ripe film of repairing；
Ripe film lower surface brush coating is repaired after thickness 1.0mm cutting, and is repaired after second thickness 2.0mm is cut
With the ripe equal brush coating in film upper surface, repairing ripe film boundaries 30mm, brush coating method after brush coating region is cut beyond thickness 2.0mm
With step 6a), the surface of entire defect mending position is covered in repairing with ripe film after then cutting thickness 1.0mm；
6c) in one layer of release cloth of surface laying of blemish surface repairing position, for isolation of pressurizeing；It is specific as follows:
Pressurization: vacuum bag method cure under pressure, detailed process are used are as follows: greasy in the one circle sealing of film one week bonding of repairing
Son, then vacuum film is covered along the trend of sealant, while vacuum tube being protruded into below film, and greasy with sealing
Son will be bonded pipe, guarantee leakproofness；Vacuum tube is connected with vaccum-pumping equipment, open vaccum-pumping equipment, guarantee pressure be-
0.05MPa is vacuumized；
Solidification: normal temperature cure 24~36 hours or more under pressurised conditions；
Demoulding: closing vaccum-pumping equipment, takes out vacuum tube, then film and sealant, release cloth are cleaned up, that is, completes
Internal insulation repairing.
The present embodiment 1 carries out the insulation after internal insulation repairing, and shear strength is greater than 1.0MPa layer by layer, and pull-off strength is greater than
1.5MPa, layers cementing quality is good, under the examination of oxy-acetylene line ablation, does not occur the phenomenon that splitting, blistering.
Claims (10)
1. a kind of Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending, it is characterised in that: the cold bonding
Method for repairing and mending the following steps are included:
1) it pre-processes
Measure the thickness and area of internal insulation defect；
2) ripe film is repaired in preparation
It is 2a) thin logical: adjust the roller spacing of rubber mixing machine to 0.2~0.6m, heat-insulating material green glue stock by rubber mixing machine carry out it is thin lead to,
And thin logical number is 3~4 times；What heat-insulating material green glue stock was selected is that heat-insulating material identical with engine fiber winding shell is raw
Sizing material；
2b) slice: adjustment rubber mixing machine roller spacing carries out slice by required thickness size and the different pre- repairing of multiple thickness is made
Use raw stock；
2c) cut-parts: the different pre- repairing of thickness is cut out into thickness of corresponding size not by the size of flat plate mold with raw stock
Same repairing raw stock, the different repairing of thickness is respectively put into the flat plate mold of corresponding depth of cavity with raw stock；
2d) vulcanize: the flat plate mold for installing repairing raw stock being put into vulcanizer and is vulcanized
2e) depanning: to flat plate mold temperature≤70 DEG C, flat plate mold is opened, takes out and repairs ripe film in advance, deburring is gone to be made
The ripe film of the repairing of different-thickness；
3) internal insulation defect processing
It 3a) polishes: polishing the internal insulation blemish surface that need to be repaired, blemish surface polishes area greater than blemish surface position
Defect boundary 30mm is set and exceeded, for polishing at Defect Edge using emery cloth, while groove is polished to Defect Edge；
It 3b) cleans: the blemish surface position after polishing being cleaned with ethyl acetate or acetone, and is dried；
4) ripe Film processing is repaired
4a) repairing is polished with ripe film: is polished with ripe film two sides the repairing prepared, while is greater than to thickness
The repairing of 1.0mm polish groove with ripe film surrounding, bevelled edge 5~10mm of width, with a thickness of 0.4~0.6mm at groove；
It 4b) cuts: being cut out according to blemish surface area and repair ripe film after the cutting of correspondingly-sized, while to being repaired after cutting
It mends and carries out mill groove processing with the boundary of ripe film one side, and select one to cut out with a thickness of the ripe film of repairing no more than 1.0mm
It cuts 30mm bigger than blemish surface area2Cutting after upper layer repair ripe film, the covering for top layer's film；
4c) clean: will after cutting repair ripe film and cut after upper layer repairing with ripe film use ethyl acetate or acetone into
Row cleaning, and dry；
5) match adhesive
Prepare cold setting adhesive WAGU-90；
6) it repairs
6a) brush coating: prepared adhesive is brushed in internal insulation blemish surface position and is repaired after cutting using hairbrush and is used
Ripe film one side, hangs 10~30 minutes, then brush second time, then hang 5~20 minutes；
6b) patch: will after cutting repairing with ripe film according to the shape to match with blemish surface with repair position carry out it is be bonded,
It fixes when bonding from side, is pushed to the other side, use roller compacting discharge bubble after fixed；Finally guaranteed by multilayer repair
Repairing fills up defective locations with ripe film after the cutting of repairing,
After defective locations are filled, ripe film upper surface brush coating is repaired after cutting at most upper one layer, while repairing after exceeding cutting
Upper layer repairing after cutting is then covered entire lack with ripe film with step 6a) by the ripe film boundaries 30mm of benefit, brush coating method
Fall into the surface of repairing position；
6c) in one layer of release cloth of surface laying of blemish surface repairing position, pressurization, curing and demolding.
2. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
Be: in the step 1), measure internal insulation defect thickness and area before adjust internal insulation repairing environment temperature and
Relative humidity, dust, the sundries for clearing up internal insulation blemish surface, wherein repairing environment temperature is 25 ± 10 DEG C, relative humidity
≤ 75%.
3. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
It is: the step 2b) in, when slice, opens cooling water, cools down to the double roller of rubber mixing machine, and monitor double roller roller simultaneously
Temperature stops slice, slice is further continued for after cooling down if roller temperature is more than 60 DEG C.
4. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
It is: the step 2c) in, flat plate mold depth of cavity is divided into four classes: I class depth is 0.5~0.6mm, II class depth is 1.0
~1.1mm, III 1.5~1.6mm of class depth, IV 2.0~2.1mm of class depth.
5. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
It is: the step 2d) in, specific sulfidation is as follows:
EPDM internal insulation sulfuration process: being warming up to 80 ± 5 DEG C with equipment, after keeping the temperature 20~30min, it is forced into 3~
4MPa is continuously heating to 150 ± 5 DEG C, 80~90min of vulcanization time, powers off after vulcanization time, with equipment cooling, decompression；
Or butyronitrile internal insulation sulfuration process: being warming up to 80 ± 5 DEG C with equipment, after keeping the temperature 20~30min, it is forced into 3~
4MPa is continuously heating to 135 ± 5 DEG C, 80~90min of vulcanization time, powers off after vulcanization time, with equipment cooling, decompression.
6. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
It is: the step 2e) in, repairing film stock thickness and I~IV class flat plate mold depth of cavity correspond, with a thickness of 0.5
The repairing of~0.65mm with ripe film by being prepared with a thickness of 0.8mm repairing with raw stock, 0.8mm repairing raw stock selection type chamber
Depth is the flat plate mold of 0.5~0.6mm；It is used with a thickness of the ripe film of repairing of 1.0~1.15mm by being repaired with a thickness of 1.2mm
Raw stock preparation, it is the flat plate mold of 1.0~1.1mm that 1.2mm repairing raw stock, which selects depth of cavity,；With a thickness of 1.5~
With ripe film by being prepared with a thickness of 1.8mm repairing with raw stock, 1.8mm repairing is deep with raw stock selection type chamber for the repairing of 1.65mm
Degree is the flat plate mold of 1.5~1.6mm；Life is used by repairing with a thickness of 2.5mm with a thickness of the ripe film of repairing of 2.0~2.15mm
Film preparation, it is the flat plate mold of 2.0~2.1mm that 2.5mm repairing raw stock, which selects depth of cavity,.
7. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
Be: in the step 5), according to component A: B component=100:3~6 proportion prepares cold setting adhesive WAGU-90
100~300g.
8. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
It is: in the step 5), is stirred evenly after the completion of Adhesive using glass bar, and prepared adhesive makes in 3h
With more than needing to prepare again after validity period.
9. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
It is: the step 6b) in, ripe film overall thickness principle is repaired after the cutting of repairing are as follows: repair after guaranteeing to cut with ripe
When film overall thickness is greater than 0.1~0.5mm of depth of defect, the number of plies that ripe film is repaired after cutting is reduced as far as possible, specifically
It is as follows:
If when depth of defect h≤0.5mm, being repaired using the film of 0.5~0.65mm thickness；
If when 0.5 < h of depth of defect≤1.0mm, being repaired using the film of 1.1~1.15mm thickness；
If when 1.0 < h of depth of defect≤1.5mm, being repaired using the film of 1.5~1.65mm thickness；
If when 1.5 < h of depth of defect≤2.0mm, being repaired using the film of 2.0~2.15mm thickness；
If when 2.0 < h of depth of defect≤2.5mm, being carried out using the film of one layer of 2.0~2.15mm+, mono- layer of 0.5~0.65mm thickness
Repairing；
If when 2.5 < h of depth of defect≤3.0mm, being carried out using the film of one layer of 2.0~2.15mm+, mono- layer of 1.0~1.15mm thickness
Repairing, or repaired using the film of three layers of 1.1~1.15mm thickness；
If when 3.0 < h of depth of defect≤3.5mm, being repaired using one layer of 2.0~2.15mm+, mono- layer of 1.5~1.65mm film,
Or the film of three layers of 1.1~1.15mm+, mono- layer of 0.5~0.65mm thickness is repaired；
If when 3.5 < h of depth of defect≤4.0mm, being repaired using 2 layers of 2.0~2.15mm or 1 layer 2.0~2.15mm+2 layers
The film of 1.1~1.15mm thickness is repaired；
If when 4.0 < h of depth of defect≤4.5mm, being repaired using 2 layers of 2.0~2.15mm+1 layer 0.5~0.65mm thickness or 1
The film of layer 2.0~2.15mm+2 layer 1.1~1.15mm+1 layer 0.5~0.65mm thickness is repaired；
If when 4.5 < h of depth of defect≤5.0mm, repair using 2 layers of 2.0~2.15mm the glue of+1 layer of 1.1~1.15mm thickness
Piece is repaired, or is repaired using the film of 5 layers of 1.1~1.15mm thickness.
10. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature
It is: the step 6c) in, detailed process is as follows:
Pressurization: cure under pressure is carried out to defective locations using vacuum bag method or sand pocket, uses vacuum bag method detailed process are as follows: repairing
The one circle sealant of film one week bonding of benefit, then vacuum film is covered along the trend of sealant, while will be true
Blank pipe protrudes into below film, and pipe Nian Jie with sealant, guarantees leakproofness；Vacuum tube is connected with vaccum-pumping equipment, opens
Vaccum-pumping equipment, guarantee pressure are -0.05MPa, are vacuumized；
Solidification: normal temperature cure 24~36 hours or more under pressurised conditions；
Demoulding: cleaning sand pocket cleans up release cloth, completes internal insulation repairing；Or vaccum-pumping equipment is closed, take out vacuum
Pipe, then film and sealant, release cloth are cleaned up, complete internal insulation repairing.
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| CN112238630A (en) * | 2020-09-08 | 2021-01-19 | 湖北三江航天江北机械工程有限公司 | Repairing method for interlayer delamination of fiber winding shell of solid rocket engine |
| CN112277209B (en) * | 2020-10-09 | 2023-03-24 | 湖北三江航天江北机械工程有限公司 | Forming method for repairing process of fiber-wound engine shell body model |
| CN112697637B (en) * | 2020-12-22 | 2023-06-30 | 湖北航天化学技术研究所 | Method for measuring volatile component content of heat insulation layer material for solid rocket engine |
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| CN101804698B (en) * | 2010-03-20 | 2012-12-26 | 太原钢铁(集团)有限公司 | Repairing method of local damage of steel-core rubber belt |
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