CN112548481A - 2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive and tool box - Google Patents
2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive and tool box Download PDFInfo
- Publication number
- CN112548481A CN112548481A CN202011172654.4A CN202011172654A CN112548481A CN 112548481 A CN112548481 A CN 112548481A CN 202011172654 A CN202011172654 A CN 202011172654A CN 112548481 A CN112548481 A CN 112548481A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- micro
- arc additive
- alloy structure
- box body
- 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.)
- Pending
Links
- 230000008439 repair process Effects 0.000 title claims abstract description 50
- 239000000654 additive Substances 0.000 title claims abstract description 30
- 230000000996 additive effect Effects 0.000 title claims abstract description 30
- 229910001250 2024 aluminium alloy Inorganic materials 0.000 title claims abstract description 27
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 45
- 238000007689 inspection Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008021 deposition Effects 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims description 37
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 25
- 229910052721 tungsten Inorganic materials 0.000 claims description 25
- 239000010937 tungsten Substances 0.000 claims description 25
- 238000004140 cleaning Methods 0.000 claims description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 238000005498 polishing Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000006104 solid solution Substances 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 12
- 229920000742 Cotton Polymers 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910017818 Cu—Mg Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
- B25H3/02—Boxes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a micro-arc additive based in-situ growth repair process and a tool box for a 2024 aluminum alloy structure, wherein related tools used for in-situ growth repair of the 2024 aluminum alloy structure are placed in a box body convenient to move, when a structure at a certain position of an airplane needs to be repaired, the tool box is directly carried to a repair site, the box body is opened, a maintenance tool is taken out, after the part to be repaired is pretreated, deposition is carried out through an arc additive manufacturing machine according to a certain operation method, after solution treatment, finally, a welding position is polished and leveled, after the inspection is qualified, the repair operation is completed, the operation is convenient and rapid, the working efficiency is improved, and the extension of the repair time caused by forgetting the maintenance tool by personnel is prevented.
Description
The technical field is as follows:
the invention relates to the field of alloy repair, in particular to a 2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive and a tool box.
Background art:
2024 aluminium alloy is a high strength hard aluminium, belonging to Al-Cu-Mg series aluminium alloy, which can be heat treated for strengthening, has moderate plasticity in quenching and quenching states, good spot welding, and has a tendency to form intergranular cracks during gas welding, good machinability after quenching and cold work hardening, and low machinability after annealing, wherein the alloy has low corrosion resistance, is usually subjected to anodic oxidation treatment and painting or is coated with an aluminium layer on the surface to improve the corrosion resistance, and is mainly used for manufacturing various high-load parts and components (but not including stamping parts forgings) such as framework parts, skins, bulkheads, ribs, spars, rivets and other working parts below 150 ℃.
The novel airplane mainly considers the design concept of improving the thrust-weight ratio, and a plurality of new technologies and new materials are rapidly developed; 2024 aluminum alloy is widely used in the field of manufacturing metal members in the aerospace industry by virtue of its excellent characteristic of high specific strength; the use of 2024 aluminum alloy in large quantities greatly improves the thrust-weight ratio of the novel airplane, but the conditions of the 2024 aluminum alloy in maintenance are more severe compared with the traditional metal components; because 2024 aluminum alloy has poor corrosion resistance, corrosion resistance treatment is required to be carried out frequently, and corroded parts are repaired; the original repairing method mainly adopts a mechanical connection reinforcement measure, and the defects of some special space structures cannot be completely repaired while great cost is paid.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: the in-situ growth repair process and the tool box of the 2024 aluminum alloy structure based on micro-arc additive overcome the defects of the prior art, carry the repair tool by a portable tool box, pretreat the part to be repaired by the repair tool, perform deposition by an arc additive manufacturing machine according to a certain operation method, perform solid solution treatment, polish and flatten the welded part, and finish repair operation after passing inspection.
The technical scheme of the invention is as follows: a2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive comprises the following steps of pretreating a part to be repaired, melting the part by an arc additive manufacturing machine according to a certain operation method, carrying out solution treatment, finally polishing and flattening the welded part, and finishing repair operation after inspection is qualified, wherein the repair process comprises the following specific steps:
s1, preprocessing a part to be repaired, a welding wire and a tungsten electrode before deposition;
(1) cleaning the surface of the workpiece and the part to be repaired and preheating to 80-100 ℃;
(2) cleaning the surface of the cut welding wire and drying;
(3) trimming the head of the tungsten electrode and cleaning the surface of the tungsten electrode;
s2, mounting a tungsten electrode on the working gun, opening the arc additive manufacturing machine, and adjusting corresponding parameters;
s3, the working gun is operated by a single hand, the gun body is held by one hand to keep the working electrode and the welding wire at 80-90 degrees, the distance between the tungsten electrode tip and the welding wire is 1-1.5 mm, the other hand is used for feeding the wire, the switch of the working gun is controlled by a pedal, the working gun is supported by the right hand to enable the electrode to move according to a certain direction on the surface of a workpiece to form a continuous welding channel, wherein the diameter of the welding spot is 1/2-1/4 in each movement, the arc-closing length is used for stepping on the switch for 1 second, and the welding wire is cut off in time when the welding;
s4, pressing a start/pause key on the panel, turning off the indicator light, entering a standby state, turning off the main power supply, and turning off the air supply;
s5, adopting solution treatment at the welding position, wherein the solution temperature is 185-195 ℃, the time is 8-12 h, and preventing local overheating;
and S6, after welding and solid solution, polishing and flattening the welding part by using a handle or a direct mill, and checking and accepting after passing the fluorescent inspection and the X-ray inspection.
Further, in S1, the stainless steel brush or the alloy grinding head is used to clean oil stain, rust and oxide layer on the workpiece, then the workpiece is cleaned by blowing air, the punched hole is cut into a circular hole or an elliptical hole according to the stress principle, the edge of the hole is polished to be flat by a polishing tool, the polishing dust is cleaned by a dust collector or blowing air during polishing, and finally the workpiece is cleaned by acetone or alcohol, and the surface of the workpiece after cleaning cannot be touched or blown by a mouth.
Furthermore, the edge of the hole is polished to be smooth by the alloy steel grinding head, so that the edge of the hole is free of burrs or is obviously convex-concave.
Further, in S1, the tungsten electrode head is ground and trimmed without eccentricity, the blackened or discolored area of the tungsten electrode head is removed, and the electrode head is kept pointed.
Further, in the step S1, the welding wire is cleaned by acetone or alcohol and dried at the temperature of 30-100 ℃.
Further, in S2, pressing the start/pause key on the panel, selecting the Al key, turning on the indicator light, turning on the flow needle to adjust the argon flow to 8-10L/min, and manually adjusting the current and voltage parameters on the operation panel according to different operation habits.
Further, in S3, before welding, the tungsten electrode is directed toward the workpiece in the opposite direction, and the switch pedal is stepped on to remove air in the pipe.
The utility model provides a 2024 aluminum alloy structure normal position increases repair toolbox based on micro-arc vibration material disk, characterized by: the box body and the box cover are hinged to each other to form a storage cavity, a fixed lock catch is arranged between the box body and the box cover, an annular bulge is arranged on the box body, an annular groove matched with the annular bulge to form a waterproof structure is formed in the box cover, rubber pads are arranged in the annular groove, foam is arranged in the box body and the box cover, the foam in the box body comprises upper foam and lower foam which are stacked up and down, an upper-layer profile groove used for fixing a cylindrical rotary file, a countersink drill, a positioning pin, a rivet punch, a wire brush, a vernier caliper, a pneumatic dust collector and a steel ruler is formed in the upper-layer foam, and a lower-layer profile groove used for fixing a G-shaped clamp, a deburring tool bit, a deburring tool, a positioning pin clamp, a rivet shear, a large-force clamp, a left file aviation shear, a straight aviation shear, a flat file and a semicircular cutter is formed in the lower-layer foam, the upper-layer foam is provided with a taking hole which is convenient for taking the upper-layer foam, and the foam in the box cover is provided with a bulge which is of an integrated structure.
Furthermore, the trolley is arranged on one side of the bottom of the box body, the telescopic pull rod is arranged on the other side of the bottom of the box body, and handles are arranged on opposite side walls of the box body.
Further, be provided with the spacing rope that prevents the excessive upset of case lid between box and the case lid, cylinder rotary file, the rotary file of button head, dimple drill, locating pin, G type press from both sides and the burring tool bit is two at least.
The invention has the beneficial effects that:
1. the repair tool is carried by a portable tool box, the part to be repaired is pretreated by the repair tool, then the part is deposited by an arc additive manufacturing machine according to a certain operation method, after solution treatment, the welded part is finally polished and leveled, and after the repair operation is qualified, the repair operation is completed.
2. The box body and the box cover are hinged with each other to form the storage cavity, the storage cavity is fixed through the fixing lock catch arranged between the box body and the box cover, the repairing tool in the storage cavity is prevented from falling off and being damaged due to the fact that the box body and the box cover are accidentally opened in use, and the two layers of foam are stacked up and down in the box body, so that the number of the storage tools is increased, and operation is facilitated.
3. The box body and the box cover are both provided with foam, the foam in the box body is provided with a contour groove for placing various maintenance tools, the maintenance tools are fixed, the maintenance tools are prevented from being shaken and collided with each other to cause damage, the foam at the lower layer in the box cover is provided with a bulge, when the box cover is covered, the bulge can be abutted against the maintenance tools, the maintenance tools are prevented from shaking in the contour groove and being worn to the maintenance tools, when the tools stored in the foam at the lower layer are used, the foam at the upper layer can be taken out through the taking hole, the foam at the lower layer is exposed, and the operation is convenient for personnel.
4. According to the invention, the idler wheels are arranged on one side of the bottom of the box body, the telescopic pull rod is arranged on the other side of the bottom of the box body, the box body can be pulled to move through the idler wheels through the telescopic pull rod, the labor intensity of personnel is reduced, the handles are arranged on the opposite side walls of the box body, the box body can be lifted by one handle, and the box body can be carried by two handles, so that the operation of the personnel is facilitated.
5. According to the invention, the limiting rope for preventing the box cover from being overturned excessively is arranged between the box body and the box cover, after a person opens the box cover through the fixed lock catch, the box cover rotates for a certain angle (inclines backwards) under the action of the limiting rope, so that the cover body is prevented from being collided with the box cover by an excessively large rotation angle, meanwhile, the box body and the box cover are provided with the annular bulge and the annular groove which form the sealing structure, and the rubber pad is arranged in the annular groove, so that the sealing effect is enhanced, and rainwater is prevented from entering.
6. According to the invention, the related tools used for in-situ growth and repair of the 2024 aluminum alloy structure are placed in the box body convenient to move, and when a structure at a certain position of the airplane needs to be repaired, the tool box can be directly carried to a repair site for repair, so that the working efficiency is improved, and the problem that the repair time is prolonged because personnel forget the repair tools is solved.
Description of the drawings:
fig. 1 is a first structural schematic diagram of a tool box for in-situ growth repair of a micro-arc additive based 2024 aluminum alloy structure.
Fig. 2 is a structural schematic diagram ii of a tool box for in-situ growth repair of a micro-arc additive-based 2024 aluminum alloy structure.
Fig. 3 is a schematic structural view of the tool box with the box cover opened.
Fig. 4 is a schematic structural diagram of upper-layer foam in the box body.
Fig. 5 is a schematic structural diagram of the foam at the lower layer in the box body.
FIG. 6 is a list of the inspection tools placed in the profile groove on the foam in the box.
FIG. 7 shows micro-arc deposition parameters of 2024 aluminum alloy.
The specific implementation mode is as follows:
example (b): referring to fig. 1, 2, 3, 4, 5, 6 and 7; in the figure, 41-box body, 42-box cover, 43-fixed lock catch, 44-annular bulge, 45-upper-layer contour groove, 46-annular groove, 47-upper-layer foam, 48-bulge, 49-roller, 50-telescopic pull rod, 51-handle, 52-limiting rope, 53-lower-layer foam, 54-taking hole and 55-lower-layer contour groove.
The specific implementation mode is as follows:
example (b): see fig. 1, 2, 3, 4 and 5; in the figure, 41-box body, 42-box cover, 43-fixed lock catch, 44-annular bulge, 45-upper-layer contour groove, 46-annular groove, 47-upper-layer foam, 48-bulge, 49-roller, 50-telescopic pull rod, 51-handle, 52-limiting rope, 53-lower-layer foam, 54-taking hole and 55-lower-layer contour groove.
A2024 aluminum alloy structure in-situ growth repair process and a tool box based on micro-arc additive manufacturing are characterized in that related tools used for in-situ growth repair of a 2024 aluminum alloy structure are placed in a box body convenient to move, when a structure at a certain position of an airplane needs to be repaired, the tool box is directly carried to a repair site, the box body is opened, a maintenance tool is taken out, after the part to be repaired is pretreated, an arc additive manufacturing machine is used for cladding according to a certain operation method, finally, a welding bead is polished to be flat, the repair operation is completed, the operation is convenient and fast, the working efficiency is improved, and the problem that maintenance time is prolonged because personnel forget the maintenance tool is solved.
The present application will be described in detail below with reference to the drawings and examples.
The utility model provides a 2024 aluminum alloy structure normal position increases repair tool case based on micro arc vibration material disk, including box 41 and case lid 42 that articulated each other forms the storage chamber, and be provided with fixed hasp 43 between box 41 and the case lid 42, be provided with annular bulge 44 on the box 41, be provided with the annular groove 46 that forms waterproof construction with the cooperation of annular bulge 44 on the case lid 42, and be provided with the rubber pad in the annular groove 46, all be provided with bubble cotton 47 in box 41 and the case lid 42, and the bubble cotton in box 41 includes upper bubble cotton 47 and lower floor bubble cotton 53 of piling up from top to bottom, offer on the upper bubble cotton 47 be used for fixed cylinder rotation file, the dimple bores, the locating pin, the rivet dashes, the wire brush, slide caliper, pneumatic dust catcher and the upper strata contour groove 45 of steel ruler, offer on the lower floor bubble cotton 53 be used for fixed G type clamp, the burring tool bit, the burring instrument, the locating pin pincers, the rivet is, The lower layer of the bionic groove 55 of the locking pliers, the left-head aviation scissors, the straight-head aviation scissors, the flat file and the semicircular file, the upper layer of the foam 53 is provided with a taking hole 54 which is convenient for taking the foam, and the foam 47 in the box cover 41 is provided with a bulge 48 which is of an integral structure with the foam.
The roller 49 is arranged on one side of the bottom of the box 41, the telescopic pull rod 50 is arranged on the other side of the bottom of the box 41, and the handles 51 are arranged on the opposite side walls of the box 41.
Be provided with the spacing rope 52 that prevents the excessive upset of case lid 42 between box 41 and the case lid 42, cylinder rotary file, round head rotary file, dimple drill, locating pin, G type press from both sides and the burring tool bit is two at least.
A list of the inspection tools placed in the profile groove on the foam in the box is shown in table 1.
TABLE 1
| Drawing number | Name (R) | Specification of | Number of | Drawing number | Name (R) | Specification of | Number of | |
| 1 | | 2 | 19 | Rivet punch | 5.0 | 1 | ||
| 2 | Round | 2 | 20 | Rivet punch | 6.0 | 1 | ||
| 3 | Dimple drill | 2.5 | 3 | 21 | | 1 | ||
| 4 | Dimple drill | 3.0 | 3 | 22 | | 200 | 1 | |
| 5 | Dimple drill | 3.5 | 3 | 23 | | 1 | ||
| 6 | Dimple drill | 4.0 | 4 | 24 | | 300 | 1 | |
| 7 | Dimple drill | 5.0 | 4 | 25 | | 500 | 1 | |
| 8 | Dimple drill | 6.0 | 3 | 26 | G- | 4 | ||
| 9 | Locating pin | 2.5 | 5 | 27 | | 10 | ||
| 10 | Locating pin | 3.0 | 5 | 28 | | 1 | ||
| 11 | Locating pin | 3.5 | 10 | 29 | Positioning | 1 | ||
| 12 | Locating pin | 4.0 | 10 | 30 | | 1 | ||
| 13 | Locating pin | 5.0 | 5 | 31 | | 1 | ||
| 14 | Locating pin | 6.0 | 5 | 32 | | 1 | ||
| 15 | Rivet punch | 2.5 | 1 | 33 | Left- | 1 | ||
| 16 | Rivet punch | 3.0 | 1 | 34 | Straight- | 1 | ||
| 17 | Rivet punch | 3.5 | 1 | 35 | | 10 cun below the | 1 | |
| 18 | Rivet punch | 4.0 | 1 | 36 | | 10 cun below the | 1 |
Through the tools stored in the tool box and the arc additive manufacturing machine, the damaged part of the TC4 titanium alloy structure is subjected to in-situ growth repair, and the specific repair steps are as follows:
a2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive comprises the following steps of pretreating a part to be repaired, melting the part by an arc additive manufacturing machine according to a certain operation method, carrying out solution treatment, finally polishing and flattening the welded part, and finishing repair operation after inspection is qualified, wherein the repair process comprises the following specific steps:
s1, preprocessing a part to be repaired, a welding wire and a tungsten electrode before deposition;
(1) cleaning the surface of the workpiece and the part to be repaired and preheating to 80-100 ℃;
cleaning oil stain, rust and an oxide layer of a workpiece by using a stainless steel brush or an alloy grinding head, then cleaning by using air blowing, cutting a punched hole into a circular hole or an elliptical hole according to a stress principle, polishing the edge of the hole by using a polishing tool, cleaning polishing dust by using a dust collector or air blowing in the polishing process, and finally cleaning by using acetone or alcohol, wherein the surface cannot be touched or blown by using a nozzle after cleaning; the edge of the hole is polished to be smooth by the alloy steel grinding head, so that the edge of the hole has no burrs or obvious convex-concave.
(2) Cleaning the surface of the cut welding wire and drying;
grinding and trimming the tungsten electrode head, wherein the grinding is not eccentric, the blackened or discolored area of the tungsten electrode head is removed, and the electrode head is kept to be a sharp head.
(3) Trimming the head of the tungsten electrode and cleaning the surface of the tungsten electrode;
the welding wire is cleaned by acetone or alcohol and dried at the temperature of 30-100 ℃.
S2, mounting a tungsten electrode on the working gun, opening the arc additive manufacturing machine, and adjusting corresponding parameters;
pressing a start/pause key on the panel, selecting an Al key, turning on an indicator light, turning on a flow needle to adjust the argon flow to 8-10L/min, and manually adjusting current and voltage parameters on the operation panel according to different operation habits; it is specifically shown in Table 2
Watch 22024 aluminium alloyMicro-arc deposition parameter of gold
 | Specification of | Remarks for note |
| Welding base material | 2024 | |
| Thickness of the substrate | 1-3mm | |
| Mode selection | Al | Front panel |
| Electrode for electrochemical cell | Tungsten electrode | 2.4, ash head |
| Welding wire | ALSi, AWS Standard | 1.2mm |
| Protective gas | Argon gas | High purity argon |
S3, the working gun is operated by a single hand, the gun body is held by one hand to keep the working electrode and the welding wire at 80-90 degrees, the distance between the tungsten electrode tip and the welding wire is 1-1.5 mm, the other hand is used for feeding the wire, the switch of the working gun is controlled by a pedal, the working gun is supported by the right hand to enable the electrode to move according to a certain direction on the surface of a workpiece to form a continuous welding channel, wherein the diameter of the welding spot is 1/2-1/4 in each movement, the arc-closing length is used for stepping on the switch for 1 second, and the welding wire is cut off in time when the welding;
before welding, the tungsten electrode is directed to the workpiece in the reverse direction, and the switch pedal is stepped to remove air in the pipeline.
S4, pressing a start/pause key on the panel, turning off the indicator light, entering a standby state, turning off the main power supply, and turning off the air supply;
s5, adopting solution treatment at the welding position, wherein the solution temperature is 185-195 ℃, the time is 8-12 h, and preventing local overheating;
and S6, after welding and solid solution, polishing the welding part by using a handle or a straight mill to be flat to the original size, and checking and accepting after passing the fluorescent inspection and the X-ray inspection, wherein no dot display exists after the fluorescent inspection, and the X-ray is free of defects.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive comprises the following steps of pretreating a part to be repaired, melting the part by an arc additive manufacturing machine according to a certain operation method, carrying out solution treatment, finally polishing and flattening the welded part, and finishing repair operation after inspection is qualified, wherein the repair process comprises the following specific steps:
s1, preprocessing a part to be repaired, a welding wire and a tungsten electrode before deposition;
(1) cleaning the surface of the workpiece and the part to be repaired and preheating to 80-100 ℃;
(2) cleaning the surface of the cut welding wire and drying;
(3) trimming the head of the tungsten electrode and cleaning the surface of the tungsten electrode;
s2, mounting a tungsten electrode on the working gun, opening the arc additive manufacturing machine, and adjusting corresponding parameters;
s3, the working gun is operated by a single hand, the gun body is held by one hand to keep the working electrode and the welding wire at 80-90 degrees, the distance between the tungsten electrode tip and the welding wire is 1-1.5 mm, the other hand is used for feeding the wire, the switch of the working gun is controlled by a pedal, the working gun is supported by the right hand to enable the electrode to move according to a certain direction on the surface of a workpiece to form a continuous welding channel, wherein the diameter of the welding spot is 1/2-1/4 in each movement, the arc-closing length is used for stepping on the switch for 1 second, and the welding wire is cut off in time when the welding;
s4, pressing a start/pause key on the panel, turning off the indicator light, entering a standby state, turning off the main power supply, and turning off the air supply;
s5, adopting solution treatment at the welding position, wherein the solution temperature is 185-195 ℃, the time is 8-12 h, and preventing local overheating;
and S6, after welding and solid solution, polishing and flattening the welding part by using a handle or a direct mill, and checking and accepting after passing the fluorescent inspection and the X-ray inspection.
2. The in-situ growth repair process of the micro-arc additive based 2024 aluminum alloy structure according to claim 1, wherein: in the S1, a stainless steel brush or an alloy grinding head is used for cleaning oil stains, rust and an oxide layer of a workpiece, then air blowing is used for cleaning, a punched hole is cut into a circular hole or an elliptical hole according to the stress principle, a grinding tool is used for grinding the edge of the hole to be flat, dust is cleaned by a dust collector or air blowing in the grinding process, finally acetone or alcohol is used for cleaning, and the surface cannot be touched or blown by a mouth after cleaning.
3. The in-situ growth repair process of the micro-arc additive based 2024 aluminum alloy structure according to claim 2, wherein: the edge of the hole is polished smoothly by the alloy steel grinding head, so that the edge of the hole is free of burrs or is obviously convex-concave.
4. The in-situ growth repair process of the micro-arc additive based 2024 aluminum alloy structure according to claim 1, wherein: in S1, the tungsten electrode head is ground without eccentricity to remove the blackened or discolored region of the tungsten electrode head, and the electrode head is kept pointed.
5. The in-situ growth repair process of the micro-arc additive based 2024 aluminum alloy structure according to claim 1, wherein: in S1, the welding wire is cleaned by acetone or alcohol and dried at 30-100 ℃.
6. The in-situ growth repair process of the micro-arc additive based 2024 aluminum alloy structure according to claim 1, wherein: and in the S2, pressing a start/pause key on the panel, selecting an Al key, turning on an indicator light, turning on a flow needle to adjust the argon flow to 8-10L/min, and manually adjusting current and voltage parameters on the operation panel according to different operation habits.
7. The in-situ growth repair process of the micro-arc additive based 2024 aluminum alloy structure according to claim 1, wherein: in the step S3, the tungsten electrode is directed to the workpiece in the reverse direction before welding, and the switch pedal is stepped on to remove air in the pipeline.
8. The utility model provides a 2024 aluminum alloy structure normal position increases repair toolbox based on micro-arc vibration material disk, characterized by: the box body and the box cover are hinged to each other to form a storage cavity, a fixed lock catch is arranged between the box body and the box cover, an annular bulge is arranged on the box body, an annular groove matched with the annular bulge to form a waterproof structure is formed in the box cover, rubber pads are arranged in the annular groove, foam is arranged in the box body and the box cover, the foam in the box body comprises upper foam and lower foam which are stacked up and down, an upper-layer profile groove used for fixing a cylindrical rotary file, a countersink drill, a positioning pin, a rivet punch, a wire brush, a vernier caliper, a pneumatic dust collector and a steel ruler is formed in the upper-layer foam, and a lower-layer profile groove used for fixing a G-shaped clamp, a deburring tool bit, a deburring tool, a positioning pin clamp, a rivet shear, a large-force clamp, a left file aviation shear, a straight aviation shear, a flat file and a semicircular cutter is formed in the lower-layer foam, the upper-layer foam is provided with a taking hole which is convenient for taking the upper-layer foam, and the foam in the box cover is provided with a bulge which is of an integrated structure.
9. The micro-arc additive based 2024 aluminum alloy structure in-situ growth repair toolbox of claim 1, wherein: and rollers are arranged on one side of the bottom of the box body, a telescopic pull rod is arranged on the other side of the bottom of the box body, and handles are arranged on opposite side walls of the box body.
10. The micro-arc additive based 2024 aluminum alloy structure in-situ growth repair toolbox of claim 1, wherein: be provided with the spacing rope that prevents the excessive upset of case lid between box and the case lid, cylinder rotary file, the rotary file of button head, dimple drill, locating pin, G type press from both sides and the burring tool bit is two at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011172654.4A CN112548481A (en) | 2020-10-28 | 2020-10-28 | 2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive and tool box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011172654.4A CN112548481A (en) | 2020-10-28 | 2020-10-28 | 2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive and tool box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112548481A true CN112548481A (en) | 2021-03-26 |
Family
ID=75042596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011172654.4A Pending CN112548481A (en) | 2020-10-28 | 2020-10-28 | 2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive and tool box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112548481A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115673492A (en) * | 2022-11-22 | 2023-02-03 | 吉林大学 | Aluminum alloy magnetic field assisted CMT arc additive manufacturing device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0913493A1 (en) * | 1996-04-15 | 1999-05-06 | BOEING NORTH AMERICAN, Inc. | Friction boring process for aluminium alloys |
| CN104174977A (en) * | 2014-08-28 | 2014-12-03 | 青岛永通电梯工程有限公司 | Argon arc welding process for aluminum and aluminum alloy |
| CN106312261A (en) * | 2016-10-16 | 2017-01-11 | 上海车功坊汽车服务有限公司 | Fusion welding filling process in aluminum alloy hub repair |
| CN206084998U (en) * | 2016-10-26 | 2017-04-12 | 国网安徽省电力公司检修公司 | Portable electric power examines and repair instrument case |
| CN108591673A (en) * | 2018-06-11 | 2018-09-28 | 中海油安全技术服务有限公司 | A kind of pipeline corrosion defect fast repairing method and a kind of safe emergency toolbox |
| CN109332860A (en) * | 2018-11-23 | 2019-02-15 | 大连理工大学 | A kind of electric arc increasing material manufacturing method of 5083 aluminium alloys/TC4 titanium alloy structure |
-
2020
- 2020-10-28 CN CN202011172654.4A patent/CN112548481A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0913493A1 (en) * | 1996-04-15 | 1999-05-06 | BOEING NORTH AMERICAN, Inc. | Friction boring process for aluminium alloys |
| CN104174977A (en) * | 2014-08-28 | 2014-12-03 | 青岛永通电梯工程有限公司 | Argon arc welding process for aluminum and aluminum alloy |
| CN106312261A (en) * | 2016-10-16 | 2017-01-11 | 上海车功坊汽车服务有限公司 | Fusion welding filling process in aluminum alloy hub repair |
| CN206084998U (en) * | 2016-10-26 | 2017-04-12 | 国网安徽省电力公司检修公司 | Portable electric power examines and repair instrument case |
| CN108591673A (en) * | 2018-06-11 | 2018-09-28 | 中海油安全技术服务有限公司 | A kind of pipeline corrosion defect fast repairing method and a kind of safe emergency toolbox |
| CN109332860A (en) * | 2018-11-23 | 2019-02-15 | 大连理工大学 | A kind of electric arc increasing material manufacturing method of 5083 aluminium alloys/TC4 titanium alloy structure |
Non-Patent Citations (2)
| Title |
|---|
| 上海市城乡建设和管理委员会人才服务考核评价中心编: "《建筑焊割作业人员安全技术》", 31 October 2016 * |
| 职业技能编委会: "《建筑工人职业技能培训教材 安装工程系列 电焊工》", 30 September 2016 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115673492A (en) * | 2022-11-22 | 2023-02-03 | 吉林大学 | Aluminum alloy magnetic field assisted CMT arc additive manufacturing device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7472464B2 (en) | Milling head for removing heat dissipating elements from a tube | |
| CN106088572B (en) | Construction method is transformed and is used in turn to aluminum alloy mould plate | |
| CN112548481A (en) | 2024 aluminum alloy structure in-situ growth repair process based on micro-arc additive and tool box | |
| CN105904151B (en) | Thin-wall part combined-repair method based on pulse welding and laser gain material reparation | |
| CN109594110A (en) | A kind of localization repairs the device and method of high-speed blanking press Large Copper Screw Nut abrasion | |
| CN105057855A (en) | Erecting welding technological method for single-upper-ring type large segmented stand ring with sole plates | |
| CN108406150B (en) | Sample plate combination for online surfacing of star-wheel toothed plate and online surfacing method | |
| CN211102156U (en) | Multi-axis linkage laser welding machine | |
| CN201579309U (en) | Rotation-type crow bar | |
| CN103752908A (en) | Cutting and grinding tool and manufacture method thereof | |
| WO2023138145A1 (en) | Method for improving anti-friction and anti-wear properties of substrate | |
| CN206898495U (en) | The safety-type file of one kind machining | |
| CN201856134U (en) | Broach used for buffing inner holes | |
| CN210388012U (en) | Welding device for large aluminum forging alloy lifting appliance of high-speed wheel | |
| CN112548482A (en) | TC4 titanium alloy structure in-situ growth repair process based on micro-arc additive manufacturing and tool kit | |
| CN205496643U (en) | PCD spiral bit | |
| CN110496909B (en) | Metal plate bending auxiliary equipment and using method thereof | |
| CN210909516U (en) | Grinding and machining device for end face of stamping retainer | |
| CN216399167U (en) | Burnishing device is used in pliers processing with positioning mechanism | |
| CN205915037U (en) | Rotatable chuck that drills and reams | |
| CN216327536U (en) | Workpiece turnover mechanism for workpiece polishing | |
| CN219152455U (en) | Weld joint coping template | |
| USRE20856E (en) | Chipping and cutting tool | |
| CN219169864U (en) | Auxiliary circle cutting device of portable plasma cutting machine | |
| CN220554993U (en) | Machining cutting equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |
|
| RJ01 | Rejection of invention patent application after publication |