CN113787133A - Thin-wall part powerful spinning and laser shock peening composite device and machining method thereof - Google Patents
Thin-wall part powerful spinning and laser shock peening composite device and machining method thereof Download PDFInfo
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- CN113787133A CN113787133A CN202111084567.8A CN202111084567A CN113787133A CN 113787133 A CN113787133 A CN 113787133A CN 202111084567 A CN202111084567 A CN 202111084567A CN 113787133 A CN113787133 A CN 113787133A
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- 238000009987 spinning Methods 0.000 title claims abstract description 127
- 230000035939 shock Effects 0.000 title claims abstract description 106
- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims description 19
- 238000003754 machining Methods 0.000 title claims description 12
- 238000005728 strengthening Methods 0.000 claims abstract description 44
- 238000003672 processing method Methods 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 claims abstract description 17
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 6
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- 238000012545 processing Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 15
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 30
- 230000000977 initiatory effect Effects 0.000 abstract description 8
- 230000007547 defect Effects 0.000 description 6
- 239000007769 metal material Substances 0.000 description 5
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- 238000013461 design Methods 0.000 description 3
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- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 230000002787 reinforcement Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
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Abstract
The invention discloses a thin-wall part power spinning and laser shock peening composite processing method which comprises the following steps: 1): strengthening the outer surface of the blank workpiece, namely performing laser shock strengthening on the blank workpiece by adopting a non-absorption layer laser shock strengthening technology; 2): the spinning wheel in the spinning equipment is matched with the die to spin the workpiece, so that the cylindrical or conical large-deformation forming of the metal thin-wall workpiece is realized. A thin-wall part power spinning and laser shock strengthening composite processing method adopts laser heat effect to heat and soften material on the surface of the material; grain refinement is realized by adopting the laser force impact effect, the plastic deformation of the part is promoted, the rebound of the part after spinning is inhibited, and a residual compressive stress layer is introduced to offset the tensile stress of the outer wall in the spinning process and inhibit the initiation and the expansion of microcracks in the material; the thin-wall workpiece after laser shock strengthening treatment is formed and processed by adopting a powerful spinning technology, so that the forming precision and the performance of the material are obviously improved.
Description
Technical Field
The invention belongs to the technical field of extrusion forming processing and manufacturing of metal materials, particularly relates to the field of processing and manufacturing of a composite process, and particularly discloses a thin-wall part powerful spinning and laser shock strengthening composite device and a processing method thereof.
Background
The powerful spinning technology is a spinning forming technology capable of deforming and thinning metal materials, has the characteristics of high strength, high hardness, high precision, low weight and the like, and is widely applied to the field of manufacturing of aerospace manufacturing parts. Meanwhile, the integrity of the structural part can be guaranteed through the powerful spinning processing, the workload of manual shape correction is reduced, and the material strength is improved. But in the spinning process, the parts are subjected to severe plastic deformation due to the extrusion action, and the defects of wrinkling, breakage, bottom bulge, orange peel and the like of the material are induced. During the extrusion process, the outer wall of the workpiece is extruded by the rotary wheel to generate a large amount of tensile stress. When the pressure of the rotary wheel is removed, the extrusion-molded part can rebound to a certain degree, and the molding precision and the processing quality of the part are seriously affected.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide a thin-wall part power spinning and laser shock strengthening composite processing method, which adopts the laser heat effect to heat and soften the material on the surface of the material; grain refinement is realized by adopting the laser force impact effect, the plastic deformation of the part is promoted, the rebound of the part after spinning is inhibited, and a residual compressive stress layer is introduced to offset the tensile stress of the outer wall in the spinning process and inhibit the initiation and the expansion of microcracks in the material; and (3) realizing the forming processing of the thin-wall workpiece after the laser shock strengthening treatment by adopting a powerful spinning technology. Thereby obviously improving the forming precision and performance of the material.
The technical scheme is as follows: in order to achieve the purpose, the invention provides a thin-wall part power spinning and laser shock peening composite processing method, which comprises the following specific working methods:
1): strengthening the outer surface of the blank workpiece, namely performing laser shock strengthening on the blank workpiece by adopting a laser shock strengthening technology without an absorption layer;
2): the spinning wheel in the spinning equipment is matched with the die to spin the workpiece, so that the cylindrical or conical large-deformation forming of the metal thin-wall workpiece is realized. A thin-wall part power spinning and laser shock strengthening composite processing method adopts laser heat effect to heat and soften material on the surface of the material; grain refinement is realized by adopting the laser force impact effect, the plastic deformation of the part is promoted, the rebound of the part after spinning is inhibited, and a residual compressive stress layer is introduced to offset the tensile stress of the outer wall in the spinning process and inhibit the initiation and the expansion of microcracks in the material; and (3) realizing the forming processing of the thin-wall workpiece after the laser shock strengthening treatment by adopting a powerful spinning technology. Thereby obviously improving the forming precision and performance of the material.
Further, the thin-wall part power spinning and laser shock strengthening composite processing method,
in the step 1), the laser head can adjust the spot energy, the diameter, the lap joint rate and the impact path of laser impact reinforcement according to the requirement in the working process.
Further, in the thin-wall part strong spinning and laser shock peening composite processing method, in the step 2), the rotating speed of the die, the feeding speed of the spinning wheel and the gap between the spinning wheel and the die are adjusted according to the laser shock peening induced surface residual compressive stress value and the data of micro hardness change.
Further, the thin-wall part power spinning and laser shock peening composite processing method is characterized in that: in the machining process, a laser strengthening action area emitted by the laser head passes through the area of a workpiece before a spinning wheel in spinning equipment, and the laser shock strengthening action area keeps consistent with the feeding amount of the spinning wheel in the feeding direction.
Further, the thin-wall part strong spinning and laser shock peening composite processing method can improve the times of laser shock peening for the position with larger change of the local curvature of the workpiece in the processing process, and can also improve the laser shock energy to improve the peening effect and influence the depth of a layer.
Preferably, the blank workpiece is made of TC4 titanium alloy material with the thickness of 10 mm, the blank diameter is 600-700 mm, the length is 300-400 mm, and the reduction rate is 20-25%.
Preferably, the thin-wall part power spinning and laser shock peening composite processing method comprises the following specific processing methods: 1): placing a TC4 titanium alloy material on a die, and fixing the die through a top frame 3;
2): the laser head performs laser shock strengthening on the TC4 titanium alloy material, firstly, the parameters of the laser head are adjusted, namely the laser head is adjusted to the laser shock energy of 7J, the laser wavelength is 1064 nm, the single pulse width is 10 ns, the repetition rate is 10 Hz, the pulse width is 20 ns, and when the lap joint rate is 50%, the laser head performs laser shock strengthening on the TC4 titanium alloy material by adopting an S-shaped shock path and a laser shock mode without an absorption layer;
3): spinning the workpiece subjected to laser shock strengthening in the step 2, namely adopting a spinning wheel with the diameter of 300 mm, machining and forming the workpiece in a forward spinning feeding mode, controlling the friction coefficient between the blank workpiece 2 and the die 1 to be 0.1, controlling a friction system between the blank workpiece 2 and the spinning wheel to be 0.1, controlling the feeding ratio to be 0.75 mm/r and controlling the rotating speed of a main shaft of the die to be 200 r/min in the machining process;
4): in the processing process, the laser impact energy is improved to 7.8J at the position with a larger forming angle of a blank workpiece 2, 3 times of laser impact is carried out on the spinning area, the forming difficulty is effectively reduced, resilience is inhibited, the temperature and plasticity of the working surface of the blank are improved, and the depth of a residual stress influence layer is deepened.
The invention relates to a thin-wall part powerful spinning and laser shock peening composite device which comprises a die, a blank workpiece, a top frame, a laser device and spinning equipment, wherein the blank workpiece is arranged on one side of the die, the top frame is arranged on the other side of the blank workpiece relative to the die, the laser device and the spinning equipment are arranged on one side of the die, and a laser head is arranged in the laser device and matched with the die. The thin-wall part powerful spinning and laser shock strengthening composite device is simple in structure, reasonable in design and easy to produce, grain refinement of metal materials is promoted through the mechanical effect of laser shock waves emitted by a laser head, the plasticity of the materials is improved, the defects of folds, peeling and the like are reduced, a residual compressive stress layer is induced and generated, the tensile stress effect generated in the spinning process can be counteracted, crack initiation and expansion are inhibited, and the forming precision, the mechanical property and the fatigue property of the materials are obviously improved.
The laser device comprises an automatic control workbench and a laser head, wherein the automatic control workbench is used for controlling the laser head to move, and the laser head is connected with the automatic control workbench.
Further, be equipped with in the spinning equipment and revolve the wheel, the place ahead of spinning head is located to the laser head, just the motion direction of laser head and revolving the wheel is unanimous along spinning feed direction.
The technical scheme shows that the invention has the following beneficial effects:
1. according to the thin-wall part power spinning and laser shock peening composite processing method, the thin-wall part power spinning and laser shock peening composite device is simple in structure, reasonable in design and easy to produce; in the processing process, the grain refinement of the metal material is promoted through the mechanical effect of laser shock waves emitted by the laser head, the plasticity of the material is improved, the defects of folds, peeling and the like are reduced, a residual compressive stress layer is induced to be generated, the tensile stress effect generated in the spinning process can be counteracted, the crack initiation and expansion are inhibited, and the forming precision, the mechanical property and the fatigue property of the material are obviously improved.
2. The invention relates to a thin-wall part power spinning and laser shock strengthening composite processing method, which adopts the laser heat effect to heat and soften the material on the surface of the material; grain refinement is realized by adopting the laser force impact effect, the plastic deformation of the part is promoted, the rebound of the part after spinning is inhibited, and a residual compressive stress layer is introduced to offset the tensile stress of the outer wall in the spinning process and inhibit the initiation and the expansion of microcracks in the material; and (3) realizing the forming processing of the thin-wall workpiece after the laser shock strengthening treatment by adopting a powerful spinning technology. Thereby obviously improving the forming precision and performance of the material.
3. According to the thin-wall part strong spinning and laser shock strengthening composite processing method, laser shock strengthening technology is characterized in that laser induced shock waves are used for acting on the surface of metal, so that plastic deformation and coarse crystal grain refinement are realized on the material, the plasticity and strength of the material are improved, and the internal defects of the material generated by strong spinning can be reduced;
the high-energy pulse laser acts on the surface of the metal to generate a large amount of heat, so that the material can be softened, the plastic forming of the metal material is facilitated, and the rebound is inhibited; in addition, the laser shock effect can induce and generate a residual pressure stress layer, can effectively inhibit the initiation and the expansion of microcracks, and can also offset the tensile stress effect generated by the extrusion deformation of the outer wall of a part, so that before the thin-wall part is subjected to powerful spinning forming processing, the laser shock strengthening treatment on the material can effectively overcome the defects existing in the spinning process, the forming precision and the strength of a workpiece are improved, and the fatigue life of the workpiece is prolonged. Meanwhile, the mechanical action of the laser shock wave is easy to generate micro-sized shock pits on the surface of the material to influence the smoothness of the shock surface, the pits on the shock surface can be filled up by powerful spinning to improve the quality of the processed surface, and the two processes complement each other, so that the forming and processing quality of the part is integrally improved.
Drawings
FIG. 1 is a schematic structural diagram of a thin-wall part power spinning and laser shock peening combined machining device according to the present invention;
FIG. 2 is a partial schematic view of the thin wall part of the present invention;
FIG. 3 is a diagram of laser shock peening lap joint rate and shock path design in accordance with the present invention.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Examples
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
As shown in the figure, powerful spinning of thin wall spare and laser shock peening set composite, including mould 1, blank work piece 2, roof-rack 3, laser device 4 and spinning equipment 5, one side of mould 1 is located to blank work piece 2, the opposite side of blank work piece 2 is located for mould 1 to roof-rack 3, one side of mould 1 is located to laser device 4 and spinning equipment 5, just be equipped with the laser head among the laser device 4 to cooperate with mould 1.
In this embodiment laser device 4 is including automatic control workstation and the laser head of control laser head removal, the laser head is connected with automatic control workstation. The automatic control console adopts a Kuka KR30-3 robot to realize space multi-degree-of-freedom motion control.
In the thin-wall part power spinning and laser shock peening composite processing method in the embodiment, the spinning equipment 5 is provided with the spinning wheel, the laser head is arranged in front of the spinning head, and the motion directions of the laser head and the spinning wheel are consistent along the spinning feeding direction.
The thin-wall part power spinning and laser shock peening composite processing method in the embodiment comprises the following specific processing methods:
1): strengthening the outer surface of the blank workpiece 2, namely performing laser shock strengthening on the blank workpiece 2 by adopting a non-absorption layer laser shock strengthening technology;
2: the spinning wheel in the spinning equipment is matched with the die to spin the workpiece, so that the cylindrical or conical large-deformation forming of the metal thin-wall workpiece is realized.
In the thin-wall part power spinning and laser shock peening composite processing method in the embodiment, in step 1, the laser head can adjust the spot energy, the diameter size, the lap joint ratio and the shock path of laser shock peening according to the requirement in the working process, and the specific adjustment mode is as follows: during laser shock peening, parameters such as light spot energy, light spot diameter size and overlapping rate can be realized by adjusting parameters of a control end, and shock paths can be adjusted through motion paths of the library card robot. (the direction indicated by the arrow in fig. 3 represents the spot path).
In the thin-wall part power spinning and laser shock peening composite processing method in this embodiment, in step 2, the rotation speed of the die, the feed speed of the spinning wheel, and the gap between the spinning wheel and the die are adjusted according to the laser shock peening induced surface residual compressive stress value and the data of micro hardness change, and the specific adjustment mode is as follows: the residual compressive stress of different materials under the action of laser shock wave thermal coupling can be measured by XRD or neutron diffraction test, and the microhardness can be measured by nano indentation test
In the thin-wall part power spinning and laser shock peening composite processing method in the embodiment, in the processing process, a laser strengthening action area emitted by a laser head passes through the area of a workpiece before a spinning wheel in spinning equipment, and the feeding amount of the laser shock strengthening action area and the feeding direction of the spinning wheel are kept consistent.
In the thin-wall part power spinning and laser shock peening composite processing method in the embodiment, in the processing process, the times of laser shock peening can be increased for the position of the workpiece 2 with large local curvature change, and the laser shock energy can be increased to improve the peening effect and influence the depth of a layer.
Example 2
As shown in the figure, powerful spinning of thin wall spare and laser shock peening set composite, including mould 1, blank work piece 2, roof-rack 3, laser device 4 and spinning equipment 5, one side of mould 1 is located to blank work piece 2, the opposite side of blank work piece 2 is located for mould 1 to roof-rack 3, one side of mould 1 is located to laser device 4 and spinning equipment 5, just be equipped with the laser head among the laser device 4 to cooperate with mould 1.
In this embodiment laser device 4 is including automatic control workstation and the laser head of control laser head removal, the laser head is connected with automatic control workstation. The automatic control console adopts a Kuka KR30-3 robot to realize space multi-degree-of-freedom motion control.
In the thin-wall part power spinning and laser shock peening composite processing method in the embodiment, the spinning equipment 5 is provided with the spinning wheel, the laser head is arranged in front of the spinning head, and the motion directions of the laser head and the spinning wheel are consistent along the spinning feeding direction.
According to the thin-wall part power spinning and laser shock strengthening composite processing method, the blank workpiece 2 is made of a TC4 titanium alloy material with the thickness of 10 mm, the diameter of the blank is 600-700 mm, the length of the blank is 300-400 mm, and the reduction rate is 20-25%.
The thin-wall part power spinning and laser shock peening composite processing method in the embodiment comprises the following specific processing methods: 1): placing a TC4 titanium alloy material on a die 1, and fixing the die through a top frame 3;
2): performing laser shock strengthening on a TC4 titanium alloy material by a laser head, firstly adjusting the parameters of the laser head, namely adjusting the laser head to have laser shock energy of 7J, laser wavelength of 1064 nm, single pulse width of 10 ns, repetition rate of 10 Hz, pulse width of 20 ns and lap joint rate of 50%, performing laser shock strengthening on the TC4 titanium alloy material by adopting an S-shaped shock path and adopting a non-absorption layer laser shock mode as shown in figure 3 (an arrow in figure 3 represents a light spot path);
3): spinning the workpiece subjected to laser shock strengthening in the step 2, namely adopting a spinning wheel with the diameter of 300 mm, machining and forming the workpiece in a forward spinning feeding mode, controlling the friction coefficient between the blank workpiece 2 and the die 1 to be 0.1, controlling a friction system between the blank workpiece 2 and the spinning wheel to be 0.1, controlling the feeding ratio to be 0.75 mm/r and controlling the rotating speed of a main shaft of the die to be 200 r/min in the machining process;
4): in the processing process, the laser impact energy is improved to 7.8J at the position with a larger forming angle of a blank workpiece 2, 3 times of laser impact is carried out on the spinning area, the forming difficulty is effectively reduced, resilience is inhibited, the temperature and plasticity of the working surface of the blank are improved, and the depth of a residual stress influence layer is deepened.
According to the thin-wall part power spinning and laser shock strengthening combined machining method in the embodiment, when the blank workpiece 2 has different forming angle areas, due to the fact that the laser shock process is changed, the surface plasticity, strength and residual compressive stress values of materials have certain differences, the feeding ratio is selectively reduced to 0.5 mm/r, the rotating speed value of the main shaft is increased to 240 r/min, the gap between the spinning wheel 2 and the die 5 is properly pressed, and therefore the tensile stress generated by plastic deformation of the outer wall of the workpiece is remarkably reduced, and the initiation and expansion of micro cracks in the workpiece are effectively inhibited.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. A thin-wall part power spinning and laser shock strengthening composite processing method is characterized in that: the specific processing method comprises the following steps:
1): strengthening the outer surface of the blank workpiece (2), namely performing laser shock strengthening on the blank workpiece (2) by adopting a non-absorption layer laser shock strengthening technology;
2): the spinning wheel in the spinning equipment is matched with the die to spin the workpiece, so that the cylindrical or conical large-deformation forming of the metal thin-wall workpiece is realized.
2. The thin-wall part power spinning and laser shock peening composite processing method according to claim 1, characterized in that: in step 1), the laser head can adjust laser shock-enhanced spot energy, diameter size, overlap ratio and impact path as required in the working process, and the specific adjustment mode is as follows: during laser shock peening, parameters of spot energy, spot diameter and lap joint rate can be realized by adjusting parameters of a control end, and shock paths can be adjusted by a motion path of a library card robot.
3. The thin-wall part power spinning and laser shock peening composite processing method according to claim 1, characterized in that: and 2) adjusting the rotating speed of the die, the feeding speed of the spinning wheel and the clearance between the spinning wheel and the die according to the laser shock peening induced surface residual compressive stress value and the data of micro hardness change.
4. The thin-wall part power spinning and laser shock peening composite processing method according to claim 3, characterized in that: in the machining process, the laser strengthening action area passes through the area of the workpiece before the spinning wheel in the spinning equipment, and the laser shock strengthening action area keeps consistent with the feeding amount of the spinning wheel in the feeding direction.
5. The thin-wall part power spinning and laser shock peening composite processing method according to claim 4, characterized in that: in the processing process, the times of laser shock peening can be increased for the position of the workpiece (2) with larger local curvature change, and the laser shock energy can be increased to improve the peening effect and influence the depth of layer.
6. The thin-wall part power spinning and laser shock peening composite processing method according to claim 5, characterized in that: the blank workpiece (2) is made of TC4 titanium alloy material with the thickness of 10 mm, the blank diameter is 600-700 mm, the length is 300-400 mm, and the thinning rate is 20-25%.
7. The thin-wall part power spinning and laser shock peening composite processing method according to claim 6, characterized in that: the specific processing method comprises the following steps: 1): placing a TC4 titanium alloy material on a die (1) and fixing the die through a top frame 3;
2): the laser head performs laser shock strengthening on the TC4 titanium alloy material, firstly, the parameters of the laser head are adjusted, namely the laser head is adjusted to the laser shock energy of 7J, the laser wavelength is 1064 nm, the single pulse width is 10 ns, the repetition rate is 10 Hz, the pulse width is 20 ns, and when the lap joint rate is 50%, the laser head performs laser shock strengthening on the TC4 titanium alloy material by adopting an S-shaped shock path and a laser shock mode without an absorption layer;
3): spinning the workpiece subjected to laser shock strengthening in the step 2, namely adopting a spinning wheel with the diameter of 300 mm, machining and forming the workpiece in a forward spinning feeding mode, controlling the friction coefficient between the blank workpiece 2 and the die 1 to be 0.1, controlling a friction system between the blank workpiece 2 and the spinning wheel to be 0.1, controlling the feeding ratio to be 0.75 mm/r and controlling the rotating speed of a main shaft of the die to be 200 r/min in the machining process;
4): in the processing process, the laser impact energy is improved to 7.8J at the position with a larger forming angle of a blank workpiece 2, 3 times of laser impact is carried out on the spinning area, the forming difficulty is effectively reduced, resilience is inhibited, the temperature and plasticity of the working surface of the blank are improved, and the depth of a residual stress influence layer is deepened.
8. The thin-wall part power spinning and laser shock peening composite processing method according to any one of claims 1 to 7, characterized in that: still include a powerful spinning of thin wall spare and laser shock peening set composite, this set composite includes, mould (1), blank work piece (2), roof-rack (3), laser device (4) and spinning equipment (5), one side of mould (1) is located in blank work piece (2), the opposite side of blank work piece (2) is located for mould (1) in roof-rack (3), one side of mould (1) is located in laser device (4) and spinning equipment (5), just be equipped with the laser head in laser device (4) to cooperate with mould (1).
9. The thin-wall part power spinning and laser shock peening composite processing method according to claim 8, characterized in that: the laser device (4) comprises an automatic control workbench and a laser head, wherein the automatic control workbench is used for controlling the laser head to move, and the laser head is connected with the automatic control workbench.
10. The thin-wall part power spinning and laser shock peening composite processing method according to claim 8, characterized in that: be equipped with in spinning equipment (5) and revolve the wheel, the place ahead of head is revolved in the laser head is located, just the motion direction of laser head and revolve the wheel is unanimous along spinning direction of feed.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438307A (en) * | 2022-01-18 | 2022-05-06 | 北京理工大学 | Laser shock-ultrasonic rolling composite strengthening method |
| CN115319037A (en) * | 2022-08-03 | 2022-11-11 | 北京科技大学 | Device and method for purifying non-metallic inclusions in continuous casting billet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438307A (en) * | 2022-01-18 | 2022-05-06 | 北京理工大学 | Laser shock-ultrasonic rolling composite strengthening method |
| CN115319037A (en) * | 2022-08-03 | 2022-11-11 | 北京科技大学 | Device and method for purifying non-metallic inclusions in continuous casting billet |
| CN115319037B (en) * | 2022-08-03 | 2024-05-14 | 北京科技大学 | Device and method for purifying nonmetallic inclusion in continuous casting billet |
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