CN112548482A - TC4 titanium alloy structure in-situ growth repair process based on micro-arc additive manufacturing and tool kit - Google Patents
TC4 titanium alloy structure in-situ growth repair process based on micro-arc additive manufacturing and tool kit Download PDFInfo
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- CN112548482A CN112548482A CN202011175222.9A CN202011175222A CN112548482A CN 112548482 A CN112548482 A CN 112548482A CN 202011175222 A CN202011175222 A CN 202011175222A CN 112548482 A CN112548482 A CN 112548482A
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- titanium alloy
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- 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
Abstract
The invention discloses an in-situ growth repair process of a TC4 titanium alloy structure based on micro-arc additive and a tool box, wherein related tools used for in-situ growth repair of the TC4 titanium 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 position to be repaired is pretreated, deposition is carried out through an arc additive manufacturing machine according to a certain operation method, finally welding beads are polished and leveled, 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 an in-situ growth repair process and a tool kit for a TC4 titanium alloy structure based on micro-arc additive manufacturing.
Background art:
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; the titanium alloy material is widely applied to the manufacturing field of metal components in the aviation industry by virtue of the excellent characteristic of high specific strength; the mass use of the titanium alloy components greatly improves the thrust-weight ratio of the novel airplane, but the conditions required by the titanium alloy components in the aspect of processing are more severe compared with the traditional metal components; the requirement on the precision of the large titanium alloy component is quite strict in the whole numerical control machining process, but due to some uncontrollable factors, small errors occasionally occur in the numerical control machining process of the titanium alloy component, so that defects are generated, and the whole titanium alloy component is scrapped; the original repairing method mainly adopts a mechanical connection reinforcement measure, so that the defects of some special space structures cannot be completely repaired while great cost is paid; since titanium alloy components are expensive to manufacture, the scrapping of such large components often results in tens of millions of losses, and the development of a new repair method is becoming urgent.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: the technology overcomes the defects of the prior art, carries the repairing tool by a portable tool box, pretreats the part to be repaired by the repairing tool, deposits the part by an arc additive manufacturing machine according to a certain operation method, and finally polishes and smoothes a weld bead to finish the repair operation, and is the TC4 titanium alloy structure in-situ growth repair technology and the tool box based on micro-arc additive.
The technical scheme of the invention is as follows: the utility model provides a TC4 titanium alloy structure normal position increases repair technology based on micro-arc vibration material disk, treats the position of restoreing and carries out the cladding through arc vibration material disk machine and according to certain operating method after, polishes the welding bead and levels at last, accomplishes the restoration operation, and its concrete step is:
s1, preprocessing a part to be repaired, a welding wire and a tungsten electrode before deposition;
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 0.5-1.5 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 along a certain direction according to the surface of a workpiece, and a continuous welding bead is formed, wherein the diameter of the welding spot is 1/2-1/3 in each movement;
s4, when welding beads are lapped, each layer of surface should be leveled and trimmed in time, the fusing force is released by beating, and when surfacing, current, voltage and pulse time parameters should be controlled, and a switch is stepped on for 1 second by the arc contracting length;
s5, 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;
and S6, after welding and stress, polishing the welding bead by using a polishing tool.
Further, in the step S1, oil stains and rust on the surface of the workpiece are cleaned, the damaged broken hole is cut into a circular hole or an elliptical hole according to a stress principle, the edge of the hole is polished to be flat by using a polishing tool, polishing dust is cleaned by using a dust collector or air blowing during polishing, and finally the surface is cleaned by using acetone or alcohol, and the surface cannot be touched or blown by using a nozzle after cleaning.
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 S1, the welding wire is cleaned with acetone or alcohol, and heated and dried.
Further, in S2, pressing the start/pause key on the panel, selecting the Ti button, 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.
Further, in S6, the residual stress in the welding bead is removed by hammering the circular welding bead with the diameter less than 30mm and the thickness less than 5 mm.
The utility model provides a TC4 titanium alloy structure normal position increases repair toolbox based on micro-arc vibration material disk, characterized by: including articulated box and the case lid that forms the storage chamber each other, just be provided with fixed hasp between box and the case lid, it is protruding to be provided with the annular on the box, be provided with on the case lid with the protruding cooperation of annular forms the annular groove of waterproof construction, just be provided with the rubber pad in the annular groove, all be provided with the bubble cotton in box and the case lid, and offer the profile modeling groove that is used for fixed hot-blast rifle, pneumatic drill, the nest brill of reaming, polisher, hole saw, tray, scissors, gluey rifle, marker pen, a injecting glue section of thick bamboo, abrasive material box, slide caliper, gluey rifle push rod, steel ruler and cutter on the bubble cotton in the case lid, be provided with the arch as an organic whole structure with it.
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, dimple drill, hole saw, tray, a injecting glue section of thick bamboo and cutter are two at least.
The invention has the beneficial effects that:
1. the invention carries the repairing tool by the portable tool box, carries out pretreatment on the part to be repaired by the repairing tool, carries out deposition by an arc additive manufacturing machine according to a certain operation method, and finally polishes and flattens the weld bead to finish the repairing operation,
2. the box body and the box cover are hinged with each other to form the storage cavity, and the storage cavity is fixed by the fixing lock catch arranged between the box body and the box cover, so that the repair tool in the storage cavity is prevented from falling off and being damaged due to accidental opening of the box body and the box cover in use.
3. Foam cotton is arranged in the box body and the box cover, contour grooves for placing various maintenance tools are formed in the foam cotton in the box body, the maintenance tools are fixed, the maintenance tools are prevented from being damaged due to mutual shaking and collision, and bulges are arranged on the foam cotton in the box cover and can abut against the maintenance tools when the box cover is covered, so that the maintenance tools are prevented from shaking in the contour grooves and being abraded.
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, related tools used for in-situ growth and repair of the TC4 titanium alloy structure are placed in the box body convenient to move, and when a structure at a certain position of an 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 micro-arc additive based TC4 titanium alloy structure in-situ growth repair tool box.
FIG. 2 is a structural schematic diagram II of a micro-arc additive based TC4 titanium alloy structure in-situ growth repair tool box.
Fig. 3 is a schematic structural view of the tool box with the box cover opened.
Fig. 4 is a schematic structural diagram of foam in the box body.
Fig. 5 is a list of the placement of service tools in the contoured grooves on the foam in the tool box.
FIG. 6 is a micro-arc deposition parameter table of TC4 titanium alloy.
The specific implementation mode is as follows:
example (b): see fig. 1, 2, 3 and 4; in the figure, 41-box body, 42-box cover, 43-fixed lock catch, 44-annular bulge, 45-contour groove, 46-annular groove, 47-foam, 48-bulge, 49-roller, 50-telescopic pull rod, 51-handle and 52-limiting rope.
The TC4 titanium alloy structure in-situ growth repair process and the tool box based on micro-arc additive manufacturing are characterized in that related tools used for TC4 titanium alloy structure in-situ growth repair 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 and a maintenance tool is taken out, after a part to be repaired is pretreated, deposition is carried out through an arc additive manufacturing machine according to a certain operation method, finally, welding beads are polished to be smooth, repair operation is completed, operation is convenient and fast, 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 TC4 titanium alloy structure normal position increases repair toolbox 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 offer on the bubble cotton 47 in the box 41 and be used for fixed hot-blast rifle, the air drill, the countersink drill, the polisher, the hole saw, the tray, the scissors, the glue gun, the marker pen, the injecting glue section of thick bamboo, the abrasive material box, slide caliper, the glue gun push rod, the imitative groove 45 of straightedge and cutter, be provided with it arch 48 as an organic whole structure with it.
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 between box 41 and the case lid 42 and prevent the spacing rope 52 of the excessive upset of case lid 42, dimple drill, hole saw, tray, a injecting glue section of thick bamboo and cutter are two at least.
A list of the inspection tools placed in the profile groove on the foam in the tool box is shown in table 1.
TABLE 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:
and S1, preprocessing the part to be repaired, the welding wire and the tungsten electrode before deposition.
Cleaning oil stains and rust on the surface of a workpiece, cutting the damaged broken hole into a circular hole or an elliptical hole according to a stress principle, polishing the edge of the hole to be flat 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 mouth after cleaning.
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.
The welding wire is cleaned by acetone or alcohol and heated and dried.
And 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 a Ti 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 an operation panel according to different operation habits, which is specifically shown in Table 2.
TABLE 2 TC4 micro-arc deposition parameters of titanium alloy
 | Specification of | Remarks for note |
| Deposited base material | TC4 | |
| Thickness of the substrate | 0.8-10mm | |
| Mode selection | Ti | Front panel |
| Electrode for electrochemical cell | Tungsten electrode | 2.4 mm |
| Welding wire | TC4, AWS Standard | 0.8-1.2mm |
| 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 0.5-1.5 mm, the wire feeding is carried out by the other hand, the switch of the working gun is controlled by a foot pedal, the working gun is supported by the right hand to enable the electrode to move along a certain direction according to the surface of a workpiece, and a continuous welding path is formed, wherein the diameter of a welding spot is 1/2-1/3 in each movement.
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.
And S4, when the weld bead is lapped, leveling and finishing each layer of surface in time, knocking to release the fusing force, and when surfacing, controlling current, voltage and pulse time parameters, and stepping on a 1-second switch for the arc-retracting length.
S5, pressing the start/pause key on the panel, turning off the indicator light, entering the standby state, turning off the main power supply, and turning off the air supply.
And S6, after welding and stress, polishing the welding bead by using a polishing tool.
And removing residual stress in the welding bead by adopting a hammering method for the circular welding bead with the diameter less than 30mm and the thickness less than 5 mm.
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. The utility model provides a TC4 titanium alloy structure normal position increases repair technology based on micro-arc vibration material disk, treats the position of restoreing and carries out the cladding through arc vibration material disk machine and according to certain operating method after, polishes the welding bead and levels at last, accomplishes the restoration operation, and its concrete step is:
s1, preprocessing a part to be repaired, a welding wire and a tungsten electrode before deposition;
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 0.5-1.5 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 along a certain direction according to the surface of a workpiece, and a continuous welding bead is formed, wherein the diameter of the welding spot is 1/2-1/3 in each movement;
s4, when welding beads are lapped, each layer of surface should be leveled and trimmed in time, the fusing force is released by beating, and when surfacing, current, voltage and pulse time parameters should be controlled, and a switch is stepped on for 1 second by the arc contracting length;
s5, 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;
and S6, after welding and stress, polishing the welding bead by using a polishing tool.
2. The in-situ growth repair process of the micro-arc additive based TC4 titanium alloy structure according to claim 1, which comprises the following steps: in the S1, oil stains and rust on the surface of the workpiece are cleaned, the damaged broken 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, polishing dust is cleaned by a dust collector or air blowing in the polishing process, finally, the hole is cleaned by acetone or alcohol, 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 TC4 titanium alloy structure according to claim 1, which comprises the following steps: 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.
4. The in-situ growth repair process of the micro-arc additive based TC4 titanium alloy structure according to claim 1, which comprises the following steps: and in S1, cleaning the welding wire by using acetone or alcohol, and heating and drying the welding wire.
5. The in-situ growth repair process of the micro-arc additive based TC4 titanium alloy structure according to claim 1, which comprises the following steps: and in the S2, pressing a start/pause key on the panel, selecting a Ti key, turning on an indicator light, opening 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.
6. The in-situ growth repair process of the micro-arc additive based TC4 titanium alloy structure according to claim 1, which comprises the following steps: 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.
7. The in-situ growth repair process of the micro-arc additive based TC4 titanium alloy structure according to claim 1, which comprises the following steps: and in the step S6, removing the residual stress in the welding bead by adopting a hammering method for the circular welding bead with the diameter less than 30mm and the thickness less than 5 mm.
8. The utility model provides a TC4 titanium alloy structure normal position increases repair toolbox based on micro-arc vibration material disk, characterized by: including articulated box and the case lid that forms the storage chamber each other, just be provided with fixed hasp between box and the case lid, it is protruding to be provided with the annular on the box, be provided with on the case lid with the protruding cooperation of annular forms the annular groove of waterproof construction, just be provided with the rubber pad in the annular groove, all be provided with the bubble cotton in box and the case lid, and offer the profile modeling groove that is used for fixed hot-blast rifle, pneumatic drill, the nest brill of reaming, polisher, hole saw, tray, scissors, gluey rifle, marker pen, a injecting glue section of thick bamboo, abrasive material box, slide caliper, gluey rifle push rod, steel ruler and cutter on the bubble cotton in the case lid, be provided with the arch as an organic whole structure with it.
9. The in-situ growth repair tool kit for the TC4 titanium alloy structure based on micro-arc additive manufacturing according to 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 in-situ growth repair tool kit for the TC4 titanium alloy structure based on micro-arc additive manufacturing according to claim 1, wherein: be provided with the spacing rope that prevents the excessive upset of case lid between box and the case lid, dimple drill, hole saw, tray, a injecting glue section of thick bamboo and cutter are two at least.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011175222.9A CN112548482A (en) | 2020-10-28 | 2020-10-28 | TC4 titanium alloy structure in-situ growth repair process based on micro-arc additive manufacturing and tool kit |
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|---|---|---|---|
| CN202011175222.9A CN112548482A (en) | 2020-10-28 | 2020-10-28 | TC4 titanium alloy structure in-situ growth repair process based on micro-arc additive manufacturing and tool kit |
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| CN108856987A (en) * | 2018-07-20 | 2018-11-23 | 江麓机电集团有限公司 | It is a kind of without drag cover protect Titanium Alloy Argon Tungsten-arc connect method |
| US20190047049A1 (en) * | 2016-02-09 | 2019-02-14 | Hitachi Metals, Ltd. | Alloy article, method for manufacturing same, and product using same |
| 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 |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180004A (en) * | 1997-09-30 | 1998-04-29 | 中国人民解放军装甲兵工程学院 | Gas protective welding mould repair machine with micropulsed rotating consumable electrode |
| CN1915579A (en) * | 2006-09-07 | 2007-02-21 | 黄有光 | Technical method for repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc |
| EP3103568A1 (en) * | 2015-06-08 | 2016-12-14 | The Boeing Company | Additive manufacturing methods |
| US20190047049A1 (en) * | 2016-02-09 | 2019-02-14 | Hitachi Metals, Ltd. | Alloy article, method for manufacturing same, and product using same |
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| CN105821408A (en) * | 2016-05-03 | 2016-08-03 | 中国航空工业集团公司北京航空材料研究院 | Method for adopting laser cladding to repair TC4-DT titanium alloys |
| 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 |
| CN108856987A (en) * | 2018-07-20 | 2018-11-23 | 江麓机电集团有限公司 | It is a kind of without drag cover protect Titanium Alloy Argon Tungsten-arc connect method |
| 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 |
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Application publication date: 20210326 |