CN104406902A - Evaluation method for anti-corrosiveness protection capability of airplane structure - Google Patents
Evaluation method for anti-corrosiveness protection capability of airplane structure Download PDFInfo
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- CN104406902A CN104406902A CN201410667944.4A CN201410667944A CN104406902A CN 104406902 A CN104406902 A CN 104406902A CN 201410667944 A CN201410667944 A CN 201410667944A CN 104406902 A CN104406902 A CN 104406902A
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Abstract
The invention belongs to the technology of aviation design, and relates to an evaluation method for the anti-corrosiveness protection capability of an airplane structure. The evaluation method comprises the following steps: firstly, extracting a corrosion protection unit: 1.1, selecting an airplane structure part to be evaluated, 1.2, extracting a structural unit, 1.3, extracting a protective unit, and 1.4, constructing the corrosion protection unit through the structural unit and the protective unit, secondly, performing design of a test piece after corrosion protection unit is extracted according to the first step, selecting substrate material, a surface protection layer, a connection form, fasteners, and protection methods during and after the process of assembling, thirdly, machining the test piece according to the design requirement of the second step, carrying out a corrosion test according to the corrosion resistance requirement of the selected structure part, and fourthly, performing visualization and microscopic examination analysis on the test piece after the test, and evaluating the corrosion performance. The evaluation method is convenient for visually evaluating the effectiveness of each protective design and measure, reduces the cost, and improves the efficiency.
Description
Technical field
The invention belongs to aerospace designs technology, relate to the evaluation method of the anticorrosive protective capacities of a kind of aircaft configuration.
Background technology
Under arms in process, if corrosion protection is not in place, serious etching problem can be there is, affect Flight Safety, bring about great losses in aircraft.Therefore, generally, in aircraft development process, anticorrosive protective capacities for aircaft configuration can carry out performance evaluation work in early stage targetedly, but due to aircaft configuration complexity, part is numerous, use material and protective materials varied, type of attachment also varies.The amount of parts huge in the face of aircraft and the syndeton of complexity, when evaluating the anticorrosive barrier propterty of aircaft configuration, carry out analysis and research and performance evaluation work one by one, both uneconomical also unrealistic.
Summary of the invention
Technical matters to be solved by this invention is: the evaluation method proposing the anticorrosive protective capacities of a kind of aircaft configuration, can avoid produced problem in the anticorrosive protective capacities evaluation procedure of aircaft configuration, solve the circumscribed difficult problem that the anticorrosive protective capacities of aircaft configuration is in the past evaluated.
Technical scheme of the present invention is: the evaluation method of the anticorrosive protective capacities of a kind of aircaft configuration, it is characterized by described evaluation method and comprises following steps:
Step one, extract corrosion protection unit:
1) the selected aircaft configuration position that will evaluate;
2) structural unit is extracted: extract structural unit for syndeton; The element of structural unit comprises: matrix material, type of attachment and securing member;
3) protective unit is extracted: protective unit is the anticorrosive safeguard procedures that structural unit surface adopts; Protective unit has three parts to form, and comprising: the means of defence after the protective treatment in the surface protecting layer of matrix material, assembling process and assembling; The surface protecting layer of described matrix material and coating and coating;
4) corrosion protection unit is built by structural unit, protective unit: the inscape of corrosion protection unit is: the process in maneuvering load, matrix material, surface protecting layer, type of attachment, securing member, assembling process and the means of defence after assembling;
Step 2, after extracting corrosion protection unit, carries out testpieces design according to step one, selects the means of defence in matrix material and surface protecting layer, type of attachment, securing member, assembling process and after assembling;
Step 3, according to the designing requirement processing experiment part of step 2, according to the structure position corrosion resistance demand selected, carries out corrosion test;
Step 4, carries out visual, micro examination analysis to testpieces after off-test, evaluates its corrosive nature.
Beneficial effect of the present invention is: adopt the anticorrosive protective capacities of the method to aircaft configuration to evaluate, effectively can reduce research object, be convenient to the validity of each protection Design of visual evaluation and measure, provide cost savings in Aircraft Corrosion design and the examination of corrosion protection System Capacity, improve efficiency, there is huge economic implications.
Accompanying drawing explanation
Fig. 1 is the joint test part schematic diagram that the anticorrosive protective capacities evaluation method of aircaft configuration adopts;
Fig. 2 is aircraft left wing face structural drawing;
Fig. 3 is the typical structure corrosion protection unit adopting this extracting method to extract;
Wherein, 1-matrix material one; 2-matrix material two; 3-matrix material three; 4-securing member; 31-aluminium alloy+sulfur acid anodizing+priming paint; 32-structural steel+cadmium plating+priming paint; 33-securing member prime hygrometric state assembling; Finish paint is coated with after 34-assembling.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is described further.
Step one, extracts corrosion protection unit
1. the selected aircaft configuration position that will evaluate;
2. extract structural unit.Extract structural unit for syndeton, the element of structural unit comprises: matrix material, type of attachment and securing member;
Matrix material is sorted out according to material category and electrode potential, comprising: aluminium alloy, structural steel, titanium alloy, stainless steel, aldary, compound substance, fiberglass;
Type of attachment comprises: bolt connection, rivet interlacement, splicing connect;
Securing member comprises: aluminium rivet, structural steel bolt, structural steel nut, titanium bolt and stainless steel bolt, titanium bolt and stainless steel nut, steel rivet, non-metallic fasteners;
3. extract protective unit.Protective unit is made up of three parts, the means of defence after the protective treatment in the surface protecting layer of matrix material, assembling process and assembling;
The surface protecting layer of matrix material comprises: sulfur acid anodizing layer, chemical oxide layer, passivation layer, phosphate coating, anodic oxide coating, cadmium coater, zinc coating, cadmium-titanium coating, copper coating, chrome plating, priming paint protective layer, enamel paint protective layer, railway grease protective layer, varnish protective layer, corrosion inhibiter protective layer;
The protection of assembling process: hygrometric state of priming assembling, the assembling of painting sealant hygrometric state, the assembling of painting railway grease;
Protection after assembling: be coated with finish paint and carry out protecting, be coated with sealant and carry out protecting, be coated with railway grease and carry out protecting, be coated with corrosion inhibiter and protect.
4. build corrosion protection unit by structural unit, protective unit.The inscape of corrosion protection unit is: the means of defence after the protective treatment in matrix material and surface protecting layer, type of attachment and securing member, assembling process and assembling.
Step 2, after extracting corrosion protection unit, carries out testpieces design according to step one, and select the means of defence in matrix material and surfacecti proteon system, type of attachment and securing member, assembling process and after assembling, the version of testpieces is shown in Fig. 1.In Fig. 1, comprise matrix material 1, matrix material 22, matrix material 33, type of attachment and securing member 4.
Step 3, according to the designing requirement processing experiment part of step 2, adopts any one test method in accelerated corrosion test, salt-fog test, damp heat test, aging test, carries out corrosion test.
Step 4, carries out visual, micro examination analysis to testpieces after off-test, evaluates its corrosive nature.
Below in conjunction with example, embodiment is described.
Example: the anticorrosive protective capacities of the left airfoil structure of aircraft is evaluated.
Step one, extracts corrosion protection unit.
1. with the left airfoil structure of aircraft for research object, see Fig. 2.
2. extract structural unit.Airfoil body structured material is aluminium alloy, structural steel, compound substance, with bolts and rivet interlacement between material and material, securing member is structural steel bolt, structural steel nut, Aluminum alloy rivet, titanium alloy bolt, titanium alloy nut, and the structural unit of formation is in table 1.
The structural unit that table 1 left wing face is extracted
3. extract protective unit.Aluminum alloy surface carries out sulfur acid anodizing, is coated with one deck TB06-9 priming paint; Structural steel surface cadmium plating, rear painting one deck H06-076 priming paint; Composite material surface is coated with one deck H06-1012H priming paint; Securing member carries out hygrometric state assembling for being coated with TB06-9 priming paint in installation process, is coated with TS96-71 polyurethane finish after assembling, and local adopts J-189 sealant to carry out hygrometric state sealing assembling.
4. the typical structure unit of extraction and protective unit are combined, form structure erosion protective unit, the corrosion protection unit of formation is in table 2, and exemplary plot is shown in Fig. 3.Comprise aluminium alloy+sulfur acid anodizing+priming paint 31; Structural steel+cadmium plating+priming paint 32; Securing member prime hygrometric state assembling 33; Finish paint 34 is coated with after assembling.
The corrosion protection unit that table 2 left wing face is extracted
Step 2, after extracting corrosion protection unit according to step one, carry out testpieces design, the version of testpieces is shown in Fig. 1. select means of defence in matrix material and surface protecting layer, type of attachment and securing member, assembling process and after assembling in table 3.
Table 3 testpieces
Step 3, according to the designing requirement processing experiment part of step 2, adopts conventional accelerated corrosion test method to carry out corrosion test.
Step 4, carries out visual, micro examination analysis to testpieces after off-test, evaluates its corrosion resistance.
Claims (1)
1. an evaluation method for the anticorrosive protective capacities of aircaft configuration, is characterized by described evaluation method and comprises following steps:
Step one, extract corrosion protection unit:
1.1) the selected aircaft configuration position that will evaluate;
1.2) structural unit is extracted: extract structural unit for syndeton; The element of structural unit comprises: matrix material, type of attachment and securing member;
1.3) protective unit is extracted: protective unit is the anticorrosive safeguard procedures that structural unit surface adopts; Protective unit has three parts to form, and comprising: the means of defence after the protective treatment in the surface protecting layer of matrix material, assembling process and assembling; The surface protecting layer of described matrix material and coating and coating;
1.4) corrosion protection unit is built by structural unit, protective unit: the inscape of corrosion protection unit is: the process in maneuvering load, matrix material, surface protecting layer, type of attachment, securing member, assembling process and the means of defence after assembling;
Step 2, after extracting corrosion protection unit, carries out testpieces design according to step one, selects the means of defence in matrix material and surface protecting layer, type of attachment, securing member, assembling process and after assembling;
Step 3, according to the designing requirement processing experiment part of step 2, according to the structure position corrosion resistance demand selected, carries out corrosion test;
Step 4, carries out visual, micro examination analysis to testpieces after off-test, evaluates its corrosive nature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410667944.4A CN104406902A (en) | 2014-11-19 | 2014-11-19 | Evaluation method for anti-corrosiveness protection capability of airplane structure |
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| CN201410667944.4A CN104406902A (en) | 2014-11-19 | 2014-11-19 | Evaluation method for anti-corrosiveness protection capability of airplane structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106124395A (en) * | 2016-09-07 | 2016-11-16 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of corrosion tests |
| CN106442287A (en) * | 2016-09-07 | 2017-02-22 | 中国航空工业集团公司沈阳飞机设计研究所 | Corrosion test method for protective capacity of corrosion resistance of outer surface of airplane |
| CN106435601A (en) * | 2016-11-22 | 2017-02-22 | 江西洪都航空工业集团有限责任公司 | Galvanic corrosion prevention method for airplane skin connection surface |
| CN113405975A (en) * | 2021-05-19 | 2021-09-17 | 中航西安飞机工业集团股份有限公司 | Method for testing corrosion resistance of metal component |
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| CN106124395A (en) * | 2016-09-07 | 2016-11-16 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of corrosion tests |
| CN106442287A (en) * | 2016-09-07 | 2017-02-22 | 中国航空工业集团公司沈阳飞机设计研究所 | Corrosion test method for protective capacity of corrosion resistance of outer surface of airplane |
| CN106435601A (en) * | 2016-11-22 | 2017-02-22 | 江西洪都航空工业集团有限责任公司 | Galvanic corrosion prevention method for airplane skin connection surface |
| CN113405975A (en) * | 2021-05-19 | 2021-09-17 | 中航西安飞机工业集团股份有限公司 | Method for testing corrosion resistance of metal component |
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Application publication date: 20150311 |