CN114939662A - Device and method for repairing out-of-tolerance hole through coaxial radial additive remanufacturing - Google Patents
Device and method for repairing out-of-tolerance hole through coaxial radial additive remanufacturing Download PDFInfo
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- CN114939662A CN114939662A CN202210591708.3A CN202210591708A CN114939662A CN 114939662 A CN114939662 A CN 114939662A CN 202210591708 A CN202210591708 A CN 202210591708A CN 114939662 A CN114939662 A CN 114939662A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/12—Metallic powder containing non-metallic particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F2007/068—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts repairing articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention provides a device and a method for repairing an out-of-tolerance hole through coaxial radial additive remanufacturing, and belongs to the technical field of repairing of an out-of-tolerance hole in mechanical connection. The problem of current out-of-tolerance hole repair difficulty is solved. The device comprises a radial additive tool, a lower support body and additive powder, wherein the lower support body is arranged below an out-of-tolerance hole to be repaired, the additive powder is filled and pressed inside the out-of-tolerance hole to be repaired, the radial additive tool and the out-of-tolerance hole to be repaired are coaxially arranged, the out-of-tolerance hole to be repaired is arranged on an out-of-tolerance hole base body to be repaired, the radial additive tool comprises a functional part, and the functional part comprises a clamping sleeve, an end face heating body and a radial additive acting body which are mutually sleeved and relatively rotate. It is mainly used for repairing out-of-tolerance holes.
Description
Technical Field
The invention belongs to the technical field of repair of an oversize hole in mechanical connection, and particularly relates to a device and a method for repairing an oversize hole by coaxial radial additive manufacturing.
Background
Mechanical connection is one of the most common connection methods, and is widely applied to the fields of aerospace, high-speed trains, buildings, automobiles and the like. In order to meet the requirement of lightweight design, the lightweight alloy is used as an ultra-poor hole matrix and tends to gradually rise. However, in a long-term service process, the problem that the inner diameter of the ultra-poor hole is damaged and enlarged easily occurs under the action of load impact, abrasion, corrosion and the like of the ultra-poor hole of the light alloy, and potential safety hazards are easily generated.
At present, the existing repairing methods such as polishing, insert block or repair welding cannot meet the higher use requirements of the airplane. The polishing reaming method can repair out-of-tolerance holes, but the method can enlarge the aperture of the original out-of-tolerance holes, so that the precision and the bearing area are reduced. The method for repairing the out-of-tolerance hole is completed by nesting the repairing sleeve, and the repaired out-of-tolerance hole is low in strength and easy to generate secondary damage. After the out-of-tolerance hole is repaired by fusion welding, the defects of air holes, cracks and the like in a repair area are easily caused due to high fusion repair temperature, and the performance is seriously reduced after the repair. Therefore, the method can repair the out-of-tolerance pore diameter, but has the problems of reduced mechanical performance of a repair area or larger limitation and the like, and can not finish repairing the out-of-tolerance pore with multiple specifications and sizes. Therefore, a novel radial additive manufacturing method for ultra-poor holes is developed, and high-quality and high-reliability repair of multi-size and multi-specification ultra-poor holes is realized through reasonable regulation and control of material components and a repair process according to typical service positions and performance requirements of the ultra-poor holes, which is particularly urgent and important.
Disclosure of Invention
In view of this, the present invention provides a device and a method for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing, so as to solve the problem of difficulty in repairing the existing out-of-tolerance hole.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a device in coaxial radial vibration material disk refabrication restoration poor hole, it includes radial vibration material disk instrument, bottom suspension body and vibration material disk powder, the bottom suspension body sets up and is being treated to restore poor hole below, vibration material disk powder is filled and is being treated to restore the downthehole portion of poor, radial vibration material disk instrument with treat to restore the coaxial setting in poor hole, treat to restore the poor hole and set up on treating to restore poor hole base member, radial vibration material disk instrument includes functional part, functional part is including cup jointing each other and relative pivoted clamp cover, terminal surface heat-generating body and radial vibration material disk action body.
Furthermore, radial vibration material disk instrument still includes clamping part and radiating part, clamping part, radiating part and functional part set gradually from top to bottom, be provided with locating plane on the clamping part.
Furthermore, the additive powder main body material is aluminum alloy, magnesium alloy, copper alloy or titanium alloy powder, the reinforcement is SiC, graphene and/or carbon nano tubes with the mass fraction of 0.1-80%, and the diameter of the additive powder is 1-500 μm.
Furthermore, the radial additive action body is a combined structure of a cylinder and a cone, threads or a milling plane are arranged on the wall of the cylinder, a conical surface is arranged on the lower support body base body of the lower support body, and the conical surface corresponds to the conical structure of the radial additive action body.
Furthermore, the diameter of the end face heating body is 1-3 times of the diameter of the out-of-tolerance hole to be repaired, and the diameter of the radial material increase action body is 0.4-0.9 times of the diameter of the out-of-tolerance hole to be repaired.
Furthermore, the material hardness and the strength of the radial additive tool are not lower than those of the ultra-poor hole matrix to be repaired.
Furthermore, the shape and the size of the lower support body are not smaller than that of the out-of-tolerance hole to be repaired, and the thickness of the lower support body is not smaller than 1 mm.
Furthermore, the diameter of the out-of-tolerance hole to be repaired is 1-500 mm, and the depth is 1-200 mm.
The invention also discloses a method for repairing the out-of-tolerance hole by coaxial radial additive remanufacturing, which comprises the following steps:
step 1: the method comprises the following steps that a lower support body is placed below an out-of-tolerance hole to be repaired and fixed through a clamping device, the radial additive tool and the out-of-tolerance hole to be repaired are determined to be in the same axis, and the size of the radial additive tool is designed according to the diameter size of the out-of-tolerance hole to be repaired;
step 2: placing additive powder into the ultra-poor hole to be repaired and gradually compacting until the height of the compacted additive powder is consistent with the thickness of the matrix of the ultra-poor hole to be repaired;
and step 3: pressing the jacket to the upper surface of the ultra-poor hole matrix to be repaired to prevent additive powder from overflowing, then rotating the end surface heating element and the radial additive action body and gradually pressing down until the end surface heating element is pressed down to the upper surface of the ultra-poor hole matrix to be repaired and the radial additive action body is pricked into the ultra-poor hole to be repaired to the bottom;
and 4, step 4: the additive powder is located in a closed space formed by the radial additive tool, the ultra-differential hole wall to be repaired and the lower support body, the additive powder is softened and plasticized under the dual actions of friction heat of the radial additive tool and heat generation of plastic deformation of materials, metallurgical bonding and fast diffusion of interface atoms are carried out under the action of strong deformation, the radial additive tool is pumped back after staying for a certain time, and the diameter of the ultra-differential hole to be repaired is gradually changed from the ultra-differential hole diameter to the original hole diameter.
Furthermore, the rotating speed of the radial additive tool is 20-20000 rpm, the pressing speed is 0.05-1000 mm/min, and the residence time is 1-100 s.
Compared with the prior art, the invention has the beneficial effects that: the additive powder is extruded to enter the out-of-tolerance hole after the radial additive tool is positioned, the additive powder is plasticized by utilizing friction heat and property heating applied by the radial additive tool, and the additive powder and the out-of-tolerance hole wall to be repaired are subjected to full metallurgical reaction, so that high-quality reliable repair of the out-of-tolerance hole is realized.
According to the invention, the additive powder is added with reinforcing phases such as SiC or a carbonaceous nano material, so that various performances including wear resistance, hardness, mechanical property and corrosion resistance can be improved, and a multiple strengthening effect of ultra-poor holes to be repaired is achieved.
The invention organically combines powder forming and deformation-driven metallurgy, promotes additive powder solid-phase forming through friction deformation self-heating, and has the advantages of low forming temperature, severe plastic deformation, high strength after repair and the like.
The radial additive material function part can be provided with a thread structure which can be consistent with the thread size of the original threaded hole to be repaired, so that the integrated design of radial additive material repair and thread hole making of the out-of-tolerance threaded hole is realized, the size of the threaded hole is ensured, the subsequent hole making procedures are reduced, and the process is simple and rapid.
The main working part of the radial additive tool consists of an end surface heating body and a radial additive action body, wherein the end surface heating body is a main part for providing heat input; the radial additive action body penetrates into the middle of the out-of-tolerance hole to be repaired, heat input and friction forming heating in the thickness direction and the radial direction are provided, interface fast diffusion is achieved, the plastic material can be prevented from overflowing through the design, and the out-of-tolerance hole to be repaired is guaranteed to be repaired and formed.
The invention has wide application range, the repairable materials comprise low-melting-point metals such as aluminum alloy, magnesium alloy and the like or high-melting-point low-plasticity metals such as metal matrix composite materials and the like, can be used for repairing various out-of-tolerance holes or common connecting holes, and has the advantages of simple repairing process, low energy consumption, greenness and no pollution.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a device for repairing an out-of-tolerance hole in coaxial radial additive remanufacturing according to the present invention;
FIG. 2 is a schematic view of a radial additive tool according to the present invention;
FIG. 3 is a schematic diagram of a matrix structure of an out-of-tolerance hole to be repaired according to the present invention;
fig. 4 is a schematic structural view of the lower supporter according to the present invention.
1: radial additive tool, 1-1: clamping part, 1-1-1: orientation flat, 1-2: heat dissipation portion, 1-3: functional part, 1-3-1: jacket, 1-3-2: end face heating element, 1-3-3: radial additive acting body, 2: to-be-repaired out-of-tolerance hole matrix, 2-1: and 2-2: to-be-repaired out-of-tolerance hole, 3: lower support, 3-1: lower supporter base, 3-2: conical surface, 4: an additive powder.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict, and the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.
The embodiment is described with reference to fig. 1-4, the device for remanufacturing and repairing an out-of-tolerance hole through coaxial radial additive manufacturing comprises a radial additive tool 1, a lower support body 3 and additive powder 4, wherein the lower support body 3 is arranged below the out-of-tolerance hole 2-2 to be repaired, the additive powder 4 is filled in the out-of-tolerance hole 2-2 to be repaired, the radial additive tool 1 and the out-of-tolerance hole 2-2 to be repaired are coaxially arranged, the out-of-tolerance hole 2-2 to be repaired is arranged on a base body 2 of the out-of-tolerance hole to be repaired, the radial additive tool 1 comprises a functional part 1-3, and the functional part 1-3 comprises a jacket 1-3-1, an end surface heating body 1-3-2 and a radial additive action body 1-3-3 which are mutually sleeved and relatively rotate.
The radial additive tool 1 further comprises a clamping part 1-1 and a heat dissipation part 1-2, the clamping part 1-1, the heat dissipation part 1-2 and the function part 1-3 are sequentially arranged from top to bottom, a positioning plane 1-1-1 is arranged on the clamping part 1-1, a clamping sleeve 1-3-1 is positioned on the outermost side and is responsible for preventing additive powder 4 from overflowing, the radial additive action body 1-3-3 is of a combined structure of a cylinder and a cone, the length of the cylinder is approximately equal to the depth of an out-of-tolerance hole to be repaired by 2-2, a thread or a milling plane and other mechanisms are arranged on the wall of the cylinder to enhance the flowability of a material and control the forming of the out-of-tolerance hole after repair; meanwhile, the shape of the thread structure can be consistent with that of the original out-of-tolerance hole 2-2 to be repaired, and after the repair is finished, secondary tapping is not needed, so that the operation steps are reduced. The lower support body base body 3-1 of the lower support body 3 is provided with a conical surface 3-2, the conical surface 3-2 corresponds to the conical structure of the radial additive action body 1-3-3 and is tightly attached to the lower support body 3 to prevent the repair powder 4 from overflowing.
The additive powder 4 is mainly made of high-strength aluminum alloy, magnesium alloy, copper alloy or titanium alloy and the like, the reinforcement is made of SiC, graphene and/or carbon nano tubes and the like with the mass fraction of 0.1% -80%, and the diameter of the additive powder 4 is 1-500 micrometers. The main material and the material of the out-of-tolerance hole 2-2 to be repaired are kept consistent or similar in components so as to ensure high-quality solid-phase metallurgical forming of powder; the raw material of the reinforcement body has various characteristics including corrosion resistance and wear resistance, and plays roles in wear resistance, corrosion resistance and the like of the ultra-poor hole to be repaired.
The diameter of the end face heating body 1-3-2 is 1-3 times of the diameter of the out-of-tolerance hole to be repaired, the diameter of the radial additive action body 1-3-3 is 0.4-0.9 times of the diameter of the out-of-tolerance hole to be repaired, the material hardness and strength of the radial additive tool 1 are not lower than those of the out-of-tolerance hole matrix 2 to be repaired, preferably, materials such as high-speed tool steel, hard alloy, tungsten-rhenium alloy, polycrystalline cubic boron nitride and the like,
the shape and size of the lower support body 3 are not smaller than the ultra-poor hole 2-2 to be repaired, the material of the lower support body is the same as or similar to that of the ultra-poor hole base body 2 to be repaired, the problems of electrochemical corrosion and the like caused by overlarge component difference of the material increase repairing component are avoided, the tissue consistency of a repairing area is ensured, and the thickness is not smaller than 1mm so as to obtain enough rigidity and supporting force.
The diameter of the out-of-tolerance hole 2-2 to be repaired is 1-500 mm, and the depth is 1-200 mm.
The embodiment is a method for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing, which comprises the following steps:
step 1: the lower support body 3 is placed below the out-of-tolerance hole 2-2 to be repaired and fixed through a clamping device, the radial additive tool 1 and the out-of-tolerance hole 2-2 to be repaired are determined to be in the same axis, and the size of the radial additive tool 1 is designed according to the diameter size of the out-of-tolerance hole 2-2 to be repaired;
step 2: placing additive powder 4 with special alloy components after high-energy ball milling and mixing into the out-of-tolerance hole 2-2 to be repaired and gradually compacting until the height of the compacted additive powder 4 is consistent with the thickness of the out-of-tolerance hole matrix 2 to be repaired;
and step 3: pressing the jacket 1-3-1 to the upper surface of the ultra-poor hole matrix 2 to be repaired to prevent additive powder 4 from overflowing, then rotating the end surface heating element 1-3-2 and the radial additive action body 1-3-3 at a high speed and gradually pressing down until the end surface heating element 1-3-2 presses down to the upper surface of the ultra-poor hole matrix 2 to be repaired and the radial additive action body 1-3-3 pricks into the ultra-poor hole 2-2 to be repaired to the bottom;
and 4, step 4: the additive powder 4 is located in a closed space formed by the radial additive tool 1, the ultra-differential hole wall 2-1 to be repaired and the lower support body 3, under the dual effects of friction heat of the radial additive tool 1 and heat generation of plastic deformation of materials, the additive powder 4 is softened and plasticized, under the action of strong deformation, metallurgical bonding and fast diffusion of interface atoms occur, the radial additive tool 1 is withdrawn after staying for a certain time, and then the diameter of the ultra-differential hole 2-2 to be repaired is gradually changed from the ultra-differential hole diameter to the original hole diameter.
The rotating speed of the radial additive tool 1 is 20-20000 rpm, the pressing speed is 0.05-1000 mm/min, and the residence time is 1-100 s.
And (3) repeating the step (2-4) according to different diameters to be repaired of the out-of-tolerance hole (2-2) to be repaired, and reasonably changing the size of the radial additive tool (1) and the radial additive repair process parameters along with the gradual reduction of the diameter of the out-of-tolerance hole (2-2) to be repaired until the short-time high-quality repair of the out-of-tolerance hole (2-2) to be repaired is realized and the original size is recovered.
The embodiments of the invention disclosed above are intended to be merely illustrative. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.
Claims (10)
1. The utility model provides a coaxial radial vibration material disk refabrication restores device in poor hole which characterized in that: the material adding device comprises a radial material adding tool (1), a lower support body (3) and material adding powder (4), wherein the lower support body (3) is arranged below an out-of-tolerance hole to be repaired (2-2), the material adding powder (4) is filled in the out-of-tolerance hole to be repaired (2-2), the radial material adding tool (1) and the out-of-tolerance hole to be repaired (2-2) are coaxially arranged, the out-of-tolerance hole to be repaired (2-2) is arranged on a base body of the out-of-tolerance hole to be repaired (2), the radial material adding tool (1) comprises a functional part (1-3), and the functional part (1-3) comprises a clamping sleeve (1-3-1), an end face heating body (1-3-2) and a radial material adding action body (1-3-3) which are mutually sleeved and relatively rotate.
2. The apparatus for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing according to claim 1, wherein: the radial additive tool (1) further comprises a clamping part (1-1) and a heat dissipation part (1-2), the clamping part (1-1), the heat dissipation part (1-2) and the functional part (1-3) are sequentially arranged from top to bottom, and a positioning plane (1-1-1) is arranged on the clamping part (1-1).
3. The apparatus for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing according to claim 1, wherein: the additive powder (4) is made of aluminum alloy, magnesium alloy, copper alloy or titanium alloy powder as a main material, the reinforcement is SiC, graphene and/or carbon nano tubes with the mass fraction of 0.1-80%, and the diameter of the additive powder (4) is 1-500 mu m.
4. The apparatus of claim 1 for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing, wherein: the radial additive action body (1-3-3) is of a combined structure of a cylinder and a cone, threads or a milling plane are arranged on the wall of the cylinder, a conical surface (3-2) is arranged on a lower support body base body (3-1) of the lower support body (3), and the conical surface (3-2) corresponds to the conical structure of the radial additive action body (1-3-3).
5. The apparatus for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing according to claim 1, wherein: the diameter of the end face heating body (1-3-2) is 1-3 times of that of the out-of-tolerance hole (2-2) to be repaired, and the diameter of the radial material increasing action body (1-3-3) is 0.4-0.9 times of that of the out-of-tolerance hole (2-2) to be repaired.
6. The apparatus for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing according to claim 1, wherein: the material hardness and the strength of the radial additive tool (1) are not lower than those of the ultra-differential hole matrix (2) to be repaired.
7. The apparatus for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing according to claim 1, wherein: the shape and size of the lower support body (3) are not smaller than the out-of-tolerance hole (2-2) to be repaired, and the thickness is not smaller than 1 mm.
8. The apparatus for repairing an out-of-tolerance hole by coaxial radial additive remanufacturing according to claim 1, wherein: the diameter of the out-of-tolerance hole (2-2) to be repaired is 1-500 mm, and the depth is 1-200 mm.
9. A method of repairing a coaxial radial additive remanufacturing apparatus for repairing an out-of-tolerance hole as defined in claim 1, wherein: the method comprises the following steps:
step 1: the lower support body (3) is placed under the out-of-tolerance hole (2-2) to be repaired and fixed through a clamping device, the radial additive tool (1) and the out-of-tolerance hole (2-2) to be repaired are determined to be in the same axis, and the size of the radial additive tool (1) is designed according to the diameter size of the out-of-tolerance hole (2-2) to be repaired;
step 2: placing the additive powder (4) into the out-of-tolerance hole (2-2) to be repaired and gradually compacting until the height of the compacted additive powder (4) is consistent with the thickness of the out-of-tolerance hole matrix (2) to be repaired;
and step 3: the jacket (1-3-1) is pressed down to the upper surface of the ultra-poor hole matrix (2) to be repaired to prevent additive powder (4) from overflowing, then the end surface heating element (1-3-2) and the radial additive action body (1-3-3) rotate and gradually press down until the end surface heating element (1-3-2) is pressed down to the upper surface of the ultra-poor hole matrix (2) to be repaired and the radial additive action body (1-3-3) is pricked into the ultra-poor hole (2-2) to be repaired to the bottom;
and 4, step 4: the additive powder (4) is located in a closed space formed by the radial additive tool (1), the ultra-differential hole wall (2-1) to be repaired and the lower support body (3), under the dual effects of friction heat of the radial additive tool (1) and heat generated by plastic deformation of materials, the additive powder (4) is softened and plasticized, metallurgical bonding and rapid diffusion of interface atoms are generated under the effect of strong deformation, the radial additive tool (1) is withdrawn after staying for a certain time, and the diameter of the ultra-differential hole (2-2) to be repaired is gradually changed from the ultra-differential hole diameter to the original hole diameter.
10. The method of coaxial radial additive remanufacturing repairing an out-of-tolerance hole according to claim 9, wherein: the rotating speed of the radial additive tool (1) is 20-20000 rpm, the pressing speed is 0.05-1000 mm/min, and the residence time is 1-100 s.
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Application publication date: 20220826 |