CN110014538A - A kind of airtight method for repairing and mending of composite element molding die - Google Patents
A kind of airtight method for repairing and mending of composite element molding die Download PDFInfo
- Publication number
- CN110014538A CN110014538A CN201910270248.2A CN201910270248A CN110014538A CN 110014538 A CN110014538 A CN 110014538A CN 201910270248 A CN201910270248 A CN 201910270248A CN 110014538 A CN110014538 A CN 110014538A
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- China
- Prior art keywords
- low
- melting alloy
- repairing
- air extractor
- mold
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Classifications
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/74—Repairing
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of airtight method for repairing and mending of composite element molding die, suitable low-melting alloy is selected according to composite element forming temperature, mark zone marker line after finding mold leak area, to leak area carry out oil removing, derust processing and in the position back installation air extractor, vacuum bag, sealing joint strip；Low-melting alloy liquid after fusing is poured on leak area, air extractor is opened by low-melting alloy liquid and is pumped into air leakage point, closes air extractor after air leakage point exudation after low-melting alloy liquid；Cooling mold, solidifies low-melting alloy, observes gage pressure situation, if the unchanged judgement repairing of pressure is completed.
Description
Technical field
This application involves composite material shaping mould field, especially a kind of airtight repairing of composite element molding die
Method.
Background technique
It is mostly thin-walled that general more complex, its shaping characteristic of composite material autoclave molding component product curved surface, which requires mold,
Structure, mold often use light sheet material to be welded or cast and reprocess.Simultaneously in composite element forming process
Needing mold in the case of a high temperature has preferable air-tightness.And mold is in the fabrication process due to welding not in place, material sheet
Situations such as body crackle or casting sand hole, leads to mold gas leakage.It is easy to cause mold to scrap.Air leakage point is generally repaired by repair welding mode
Guarantee that mold is airtight again, mold welding deformation be easy to cause by process of patch weld, while needing to find gas leakage accurate location before welding,
But it is actually subjected to accurately find the Gas leak position that Gas leak position is extremely difficult, and especially some naked eyes are difficult to.
In order to overcome the airtight reparation disadvantage of traditional repair welding, needs to develop a kind of pair of mold and be not likely to produce deformation, do not need essence
Standard finds a kind of effectively airtight method for repairing and mending of air leakage point.
Summary of the invention
The application purpose be to provide it is a kind of it is easy to use, effective, without precise positioning, the gas of output deformation is not easy to mold
Close method for repairing and mending.
To achieve the above objectives, the present invention, which adopts the following technical scheme that, is achieved:
A kind of airtight method for repairing and mending of composite element molding die, includes the following steps:
1 selects suitable low-melting alloy, selected low-melting alloy fusion temperature according to composite element forming temperature a
Higher than a+10 DEG C, it is lower than a+30 DEG C；
2 find mold leak area after mark zone marker line, to leak area carry out oil removing, derust processing and in the position
Set back installation air extractor, vacuum bag, sealing joint strip；
3 pairs of leak areas heat, which controls more than low-melting alloy fusion temperature；
4 are poured on the low-melting alloy liquid after fusing on leak area, open air extractor for low-melting alloy liquid
It is pumped into air leakage point, closes air extractor after air leakage point exudation after low-melting alloy liquid；
5 cooling molds, solidify low-melting alloy, observe gage pressure situation, if the unchanged judgement repairing of pressure
It completes, if changing repetition step 1-3 and 1-4；
Air extractor, vacuum bag, sealing joint strip are removed after the completion of 6 repairings, removes the extra low-melting alloy of die surface.
This method uses temperature not higher than mold using low-melting alloy melting temperature, and low-melting alloy liquid has good
Mobility, gas leakage crack is filled up, condensation cured and mold integrally guarantee the air-tightness of mold, have it is easy to operate,
Without precise positioning, the air leakage point of adjacent position can be repaired simultaneously.
Attached drawing is described in further detail this application with reference to embodiments.
Detailed description of the invention
Fig. 1 metal die Gas leak position marks schematic diagram
Fig. 2 mold Gas leak position back seal schematic diagram
Fig. 3 low-melting alloy repairing principle schematic cross-section
Figure label explanation: 1 mold；2 mark lines；3 air leakage points；4 air extractors；5 vacuum bags；6 sealing joint strips；7 eutectics
Point alloy.
Specific embodiment
Referring to attached drawing 1-3, a kind of airtight method for repairing and mending of composite element molding die includes the following steps:
1 selects suitable low-melting alloy 7 according to composite element forming temperature a, and selected low-melting alloy 7 melts temperature
Degree is higher than a+10 DEG C, is lower than a+30 DEG C；
2 find 1 leak area of mold after mark zone marker line 2, to leak area carry out oil removing, derust processing and at this
Position back is installed by air extractor 4, vacuum bag 5, sealing joint strip 6；
3 pairs of leak areas heat, which controls more than low-melting alloy fusion temperature；
4 are poured on the low-melting alloy liquid after fusing on leak area, open air extractor 4 for low-melting alloy liquid
It is pumped into air leakage point 3, closes air extractor after the exudation of air leakage point 3 after low-melting alloy liquid；
5 cooling molds 1, solidify low-melting alloy 7, observe gage pressure situation, if the unchanged judgement of pressure is repaired
It mends and completes, if changing repetition step 3 and 4；
Air extractor 4, vacuum bag 5, sealing joint strip 6 are removed after the completion of 6 repairings, removal 1 excess surface low melting point of mold is closed
Gold 7.Entire mending course is completed.
Airtight repairing is carried out to mold using low-melting alloy.General composite element has forming temperature requirement.Therefore mould
Tool is usually no more than forming temperature using temperature.Mold is no more than 300 ° using temperature under normal circumstances, according to repairing mould reality
Border situation selects the low-melting alloy more slightly higher than forming temperature to be repaired, and low-melting alloy is by elements such as bismuth, tin, antimony, copper, zinc
It matches.Low-melting alloy liquid is pumped into the crack of gas leakage by this method, also needs to add low-melting alloy in the process
Heat, in order to avoid too fast cooled and solidified.It is set in the gas leakage crack crack Zhong Ji to the cooling low-melting alloy of mold to fill up completely, restriking dies
Tool type face is suppressed when mold back side Shi Yike inconvenient for operation passes through in mould type wheat flour sealing device by low-melting alloy liquid
It is pressed into gas leakage gap.
The application has lower fusion temperature using low-melting alloy, and liquid fluidity preferably fills up gas leakage gap.It is cold
Air leakage point is filled by solidifying microdilatancy, guarantees the air-tightness of mold.Die ontology is not specifically injured, while repairing adjacent many places
Air leakage point, the characteristics of not influenced by gas leakage shaped position.
Claims (1)
1. a kind of airtight method for repairing and mending of composite element molding die, it is characterised in that include the following steps:
1-1 selects suitable low-melting alloy, selected low-melting alloy fusion temperature according to composite element forming temperature a
Higher than a+10 DEG C, it is lower than a+30 DEG C；
1-2 marks zone marker line after finding mold leak area, carries out oil removing to leak area, derusting is handled and in the position
Set back installation air extractor, vacuum bag, sealing joint strip；
1-3 heats leak area, which controls more than low-melting alloy fusion temperature；
Low-melting alloy liquid after fusing is poured on leak area by 1-4, is opened air extractor and is taken out low-melting alloy liquid
Enter air leakage point, closes air extractor after air leakage point exudation after low-melting alloy liquid；
1-5 cools down mold, solidifies low-melting alloy, observes gage pressure situation, if the unchanged judgement of pressure has been repaired
At if changing repetition step 1-3 and 1-4；
Air extractor, vacuum bag, sealing joint strip are removed after the completion of 1-6 repairing, removes the extra low-melting alloy of die surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270248.2A CN110014538B (en) | 2019-04-03 | 2019-04-03 | Method for repairing air tightness of composite material component forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270248.2A CN110014538B (en) | 2019-04-03 | 2019-04-03 | Method for repairing air tightness of composite material component forming die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110014538A true CN110014538A (en) | 2019-07-16 |
| CN110014538B CN110014538B (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910270248.2A Active CN110014538B (en) | 2019-04-03 | 2019-04-03 | Method for repairing air tightness of composite material component forming die |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110948915A (en) * | 2019-11-26 | 2020-04-03 | 上海伽材新材料科技有限公司 | Repairing structure and repairing process for through-type pores and cracks on surface of carbon fiber shell |
| CN115157725A (en) * | 2022-05-30 | 2022-10-11 | 浙江天能电池江苏新能源有限公司 | Method for repairing sand holes of storage battery shell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187527A (en) * | 1986-02-13 | 1987-08-15 | Mazda Motor Corp | Die repairing method |
| CN102528375A (en) * | 2012-02-07 | 2012-07-04 | 新疆昆仑轮胎有限公司 | Method for repairing tire mould |
| CN104942276A (en) * | 2015-06-02 | 2015-09-30 | 遵义金业机械铸造有限公司 | Casting gap repair method |
| CN108555526A (en) * | 2018-04-28 | 2018-09-21 | 南京航空航天大学 | A kind of hot-work die crack forming mechanism device and restorative procedure |
-
2019
- 2019-04-03 CN CN201910270248.2A patent/CN110014538B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187527A (en) * | 1986-02-13 | 1987-08-15 | Mazda Motor Corp | Die repairing method |
| CN102528375A (en) * | 2012-02-07 | 2012-07-04 | 新疆昆仑轮胎有限公司 | Method for repairing tire mould |
| CN104942276A (en) * | 2015-06-02 | 2015-09-30 | 遵义金业机械铸造有限公司 | Casting gap repair method |
| CN108555526A (en) * | 2018-04-28 | 2018-09-21 | 南京航空航天大学 | A kind of hot-work die crack forming mechanism device and restorative procedure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110948915A (en) * | 2019-11-26 | 2020-04-03 | 上海伽材新材料科技有限公司 | Repairing structure and repairing process for through-type pores and cracks on surface of carbon fiber shell |
| CN115157725A (en) * | 2022-05-30 | 2022-10-11 | 浙江天能电池江苏新能源有限公司 | Method for repairing sand holes of storage battery shell |
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| Publication number | Publication date |
|---|---|
| CN110014538B (en) | 2021-03-26 |
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