WO2011074340A1 - ショットピーニング装置 - Google Patents
ショットピーニング装置 Download PDFInfo
- Publication number
- WO2011074340A1 WO2011074340A1 PCT/JP2010/069502 JP2010069502W WO2011074340A1 WO 2011074340 A1 WO2011074340 A1 WO 2011074340A1 JP 2010069502 W JP2010069502 W JP 2010069502W WO 2011074340 A1 WO2011074340 A1 WO 2011074340A1
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- WIPO (PCT)
- Prior art keywords
- construction
- shot
- shape
- shot peening
- vibrator
- Prior art date
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/005—Vibratory devices, e.g. for generating abrasive blasts by ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
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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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
Definitions
- the present invention relates to a shot peening apparatus.
- Shot peening is a kind of cold working, and shot material, which is a sphere of ferrous or non-ferrous metal, collides with the metal surface at a high speed to generate a compressive stress on the metal surface and to improve fatigue strength against repeated loads. Improve. In a pressure vessel or a reactor vessel of a chemical plant, for example, shot peening is applied to a welded portion in order to improve the fatigue strength of the welded portion.
- Patent Document 1 discloses an ultrasonic shot peening apparatus that performs shot peening on a J-welded portion between a lower surface of a reactor vessel lid and a nozzle and a surface adjacent to the J-welded portion.
- the ultrasonic shot peening apparatus includes a disk, an ultrasonic peening head in which a vibrator is inserted into a recovery hole formed in the disk, and a cylinder disposed in a state of surrounding the outer peripheral surface while being in contact with the outer peripheral surface of the disk. And a chamber having an upper edge having the same inclination as that of the portion where shot peening is applied.
- the number of collisions with the metal surface when performing shot peening is set, and the compressive stress to be applied to the construction site is determined by setting the construction time according to this number. That is, as the number of shot materials decreases, the compressive stress decreases.
- the compressive stress decreases.
- the peening apparatus one having a chamber for preventing the shot material from scattering around the construction site is applied.
- the shot material may remain in the nuclear facility and affect the function of the nuclear facility, so it is necessary to collect all the scattered shot material. , Requiring a lot of labor and risk of radiation exposure. For this reason as well, particularly in the construction of shot peening in a nuclear facility, like the ultrasonic shot peening apparatus described in Patent Document 1, it has a chamber that prevents the shot material from scattering around the construction site. Things apply.
- shot peening locations are not always the same shape.
- the build-up thickness of the welded portion is designed to be a predetermined value or more, the build-up thickness is not always determined.
- the construction location of shot peening is not always a flat surface. For example, when the shot peening construction site is bent like an entrance corner, the chamber shape becomes complicated. Due to such circumstances, there may be a gap through which the shot material can pass between the construction site and the chamber. In this case, it is impossible to prevent the shot material from being scattered around the construction site.
- This invention solves the subject mentioned above, and it aims at providing the shot peening apparatus which respond
- a shot peening apparatus imparts kinetic energy to a shot material by a vibrator in a shot peening apparatus that applies a compressive stress by colliding the shot material with a weld in a nuclear facility.
- the surrounding means changes the state in accordance with the build-up thickness of the welded part and the shape of the welded part including the welded part, so that the surroundings of the construction part including the welded part and the vibrator Since the shot material can be fastened in the area surrounding the two, it corresponds to the shape of the shot peening construction location and can prevent the shot material from being scattered around the construction location.
- the target construction site is a nuclear facility
- the number of shot materials can be kept constant, preventing the situation where the compressive stress applied to the construction site is reduced, and shot peening can be done only once. For this reason, it is possible to reduce the time for the operator to enter the area where radiation is handled.
- the target construction site is a nuclear facility
- the work of collecting the shot material can be eliminated and the function of the nuclear facility can be affected. There is no risk of giving.
- the surrounding means is provided so as to be able to advance and retreat from the vibrator side toward the construction location, and is biased toward the construction location to contact the construction location,
- the advance / retreat state changes according to the shape of the construction site.
- the state of the surrounding means can be changed according to the shape of the construction site, and the above-described effects can be obtained.
- the surrounding means is provided so as to be able to advance and retreat from the vibrator side toward the construction site, is pressed toward the construction site, contacts the construction site, and the construction The advance / retreat state changes according to the shape of the part.
- the state of the surrounding means can be changed according to the shape of the construction site, and the above-described effects can be obtained.
- the surrounding means is configured as a rod-shaped member provided such that the tip thereof is directed from the vibrator side to the construction site and can be advanced and retracted in the direction, and the rod-shaped member is formed by the welding.
- the construction place including the part and the periphery of the vibrator are both enclosed, arranged in a plurality in a manner that prevents passage of the shot material outside the enclosed area, and the advance / retreat state changes according to the shape of the construction place It is characterized by doing.
- the shot material corresponds to the shape of the construction site of shot peening and the shot material is around the construction site. Can be prevented from being scattered.
- the surrounding means surrounds both the construction site including the welded portion and the vibrator by the fluid jetted from the vibrator side toward the construction site, and The ejection length of the fluid that strikes the construction location changes according to the shape of the construction location.
- the state of the surrounding means can be changed according to the shape of the construction site, and the above-described effects can be obtained.
- the fluid is jetted in such a manner that the construction area including the weld and the region surrounding both the vibrators are narrowed toward the construction area.
- the shot material is pushed toward the inside of the region where the shot material is fastened, the situation where the shot material is scattered around the construction site can be more reliably prevented by the injected fluid.
- the surrounding means includes a movable part whose state changes according to the shape of the construction part including the welding part, and a construction part including the welding part and a fixed wall part, and the The shot material is fastened in the enclosed region while surrounding the vibrator together.
- a fixed wall portion is provided corresponding to a part whose shape is prescribed, such as a flat part of the construction site, and the surrounding means can be arranged with reference to this position. Can be placed easily and at a suitable site.
- the shot peening apparatus of the present invention is a shot peening apparatus that applies a compressive stress by colliding a shot material with a welded portion, and imparts kinetic energy to the shot material by a vibrator. And surrounding means for fastening the shot material in the enclosed region while changing the state according to the shape of the construction location, and surrounding the construction location including the weld and the vibrator.
- the surrounding means changes the state in accordance with the build-up thickness of the welded part and the shape of the welded part including the welded part, so that the surroundings of the construction part including the welded part and the vibrator Since the shot material can be fastened in the area surrounding the two, it corresponds to the shape of the shot peening construction location and can prevent the shot material from being scattered around the construction location.
- the present invention it is possible to correspond to the shape of the portion to be shot peened and to prevent the shot material from being scattered around the construction location.
- FIG. 1 is a schematic perspective view of a shot peening apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic sectional side view of the shot peening apparatus according to Embodiment 1 of the present invention.
- FIG. 3 is a schematic sectional side view showing a use state of the shot peening apparatus according to Embodiment 1 of the present invention.
- FIG. 4 is a schematic sectional side view of a shot peening apparatus according to Embodiment 2 of the present invention.
- FIG. 5 is a schematic sectional side view of a shot peening apparatus according to Embodiment 3 of the present invention.
- the shot peening apparatus described below is particularly suitable for applying compressive stress by causing a shot material to collide with a construction site including a weld in a nuclear facility, but the target construction site is not limited to a nuclear facility. .
- the shot peening apparatus 1 includes an enclosing means (also called a chamber) 2.
- the surrounding means 2 is formed with an opening 24 that surrounds the periphery of the bottom portion 21 with a movable portion 22 and a wall portion 23 and opens to face the bottom portion 21.
- the movable portion 22 is configured as a rod-like member, is erected with respect to the bottom portion 21, and is arranged in a plurality along the periphery of the bottom portion 21.
- a plurality of movable portions 22 are arranged in parallel along two opposing sides of bottom portion 21 formed in a rectangular shape.
- This bar-shaped movable part 22 is designed so that each interval cannot pass the shot material B used for shot peening.
- the rod-like movable portion 22 is inserted into the holes of the bottom side guide portion 25a and the opening side guide portion 25b, and can move forward and backward in the extending direction erected while being guided by the holes of the guide portions 25a and 25b.
- a compression spring 22a is disposed in the hole of the bottom side guide portion 25a, and the movable portion 22 is urged by the compression spring 22a so as to always move toward the opening 24 side.
- a gap 25c is formed between the bottom side guide part 25a and the opening side guide part 25b, and a retaining flange 22b is provided around the movable part 22 corresponding to the gap 25c.
- the movable portion 22 is urged toward the opening 24 by the compression spring 22a, and the movement of the movable portion 22 on the opening 24 side is restricted by the flange 22b coming into contact with the opening-side guide portion 25b.
- the above-described configuration of the rod-like movable portion 22 is merely an example, and it is only necessary that the rod-like movable portion 22 can be moved forward and backward in the extending direction, and is not limited to the above configuration.
- the wall portion 23 is configured as a plate member, and is erected and fixed to the bottom portion 21.
- the wall portion 23 is erected along two opposing sides where the movable portion 22 is not provided at the bottom portion 21 formed in a rectangular shape.
- the shot peening apparatus 1 is provided with a kinetic energy applying means 26 at the bottom 21.
- the kinetic energy applying means 26 is for accelerating the shot material B to give the shot material B energy necessary for shot peening.
- the kinetic energy applying unit 26 includes an oscillation unit 26a and a shot peening vibrator (hereinafter referred to as a vibrator) 26b.
- the oscillating means 26a vibrates at a predetermined frequency and a predetermined amplitude in order to accelerate the shot material B.
- a piezoelectric element such as a piezo element is used.
- the vibrator 26 b is provided on the surface of the bottom portion 21 of the surrounding means 2 and is formed in a rectangular shape according to the shape of the bottom portion 21, and transmits the vibration of the oscillation means 26 a to the shot material B.
- Oscillating means 26a is directly or indirectly attached to the vibrator 26b.
- the oscillating means 26a is indirectly attached to the vibrator 26b, for example, there is a form in which the oscillating means 26a is attached to the vibrator 26b via a vibration transmitting member.
- a control device is connected to the oscillating means 26a to give an electric signal having a predetermined frequency to the oscillating means 26a to vibrate the oscillating means 26a at a predetermined frequency.
- a predetermined frequency for example, a frequency in the ultrasonic region
- the shot material B is accelerated toward the opening 24 by oscillating at a frequency of a predetermined period in a direction parallel to the direction from the vibrator 26b toward the opening 24 of the surrounding means 2 (the direction of arrow V in FIG. 2).
- the surrounding means 2 When performing shot peening by the shot peening apparatus 1 described above, as shown in FIG. 2, the surrounding means 2 is arranged with its opening 24 facing the construction location U including the weld W, and the bottom 21 (vibration)
- a plurality of shot materials B are stored in a region surrounded by the child 26b), the movable portion 22 and the wall portion 23.
- the shot material B for example, steel balls or spheres of non-ferrous metal (for example, non-metal such as ceramics) are used, and an appropriate type is used according to the material of the construction location U, usage conditions, and the like.
- the spherical shape of the shot material B is formed with high accuracy, and the plurality of shot materials B have the same diameter.
- the surrounding means 2 arranged toward the construction site U is arranged with a gap where the end of the wall portion 23 on the opening 24 side is not in contact with the surface of the construction site U or the shot material B does not pass.
- the movable part 22 of the surrounding means 2 comes into contact with the surface of the construction location U by the urging force of the compression spring 22a due to the above arrangement of the wall part 23.
- the surrounding means 2 surrounds both the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b.
- the shot peening apparatus 1 provides the energy necessary for shot peening to the shot material B by accelerating the shot material B by the kinetic energy applying means 26 after arranging the surrounding means 2 as described above. Thereby, the shot material B is driven out toward the opening 24 and is driven into the surface of the construction location U to give a compressive stress to the surface.
- the shot peening apparatus 1 shot peens the construction location U by ultrasonic shot peening.
- shot peening is not limited to ultrasonic shot peening, but ultrasonic shot peening is preferably used from the viewpoint of strict construction management.
- the shot peening apparatus 1 of the present embodiment is particularly suitable for construction on a construction site U having a bent or curved shape.
- the wall portion 23 is disposed on the flat portion of the construction location U, and the construction location U
- the movable portion 22 is arranged corresponding to the bent portion.
- the wall part 23 is provided in the end on the opening part 24 side with a gap that the contact or the shot material B does not pass through the surface of the construction site U.
- the movable part 22 is provided to follow the shape of the construction part U by the end of the opening part 24 contacting the surface of the construction part U including the welded part W by the urging force of the compression spring 22a. It is done.
- the surrounding means 2 surrounds the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b with respect to the construction location U having a bent shape.
- the surface of the construction site U including the welded portion W and the periphery of the vibrator 26b can be similarly enclosed with respect to the construction site U having a curved shape.
- the shape of the construction site U is not limited to the above-mentioned corner, but may be a corner.
- the wall portion 23 is arranged on the flat portion of the construction location U, and the movable portion 22 is arranged corresponding to the bent portion or the curved portion of the construction location U.
- the wall part 23 is provided in the end on the opening part 24 side with a gap that the contact or the shot material B does not pass through the surface of the construction site U.
- the movable part 22 is provided to follow the shape of the construction part U by the end of the opening part 24 contacting the surface of the construction part U including the welded part W by the urging force of the compression spring 22a. It is done.
- the surrounding means 2 surrounds the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b with respect to the construction location U having a bent or curved shape.
- the shape of the construction site U is not limited to the above-mentioned corners and out corners.
- the wall portion 23 is not provided, and only a plurality of movable portions 22 are erected on the bottom portion 21, and the movable portions 22 are arranged corresponding to the convex shape or concave shape of the construction site U.
- the end by the side of the opening part 24 contacts the convex or concave surface of the construction location U including the welded portion W by the urging force of the compression spring 22a.
- the surrounding means 2 surrounds the surface of the construction location U including the welded part W and the periphery of the vibrator 26b with respect to the construction location U of various shapes.
- the shape of the bottom 21 of the surrounding means 2 and the vibrator 26b disposed on the surface of the bottom 21 is not limited to the above-described rectangular shape.
- a circular shape, an elliptical shape, a polygonal shape, an indefinite shape, or the like may be used in accordance with the shape of the construction location U.
- the movable part 22 and the wall part 23 are arranged in a manner of surrounding the bottom part 21 and the vibrator 26b.
- the wall portion 23 may not be disposed and only the movable portion 22 may be disposed.
- the shot peening apparatus 1 has both the kinetic energy applying means 26 for applying kinetic energy to the shot material B by the vibrator 26b, the construction location U including the welded portion W, and the vibrator 26b.
- Surrounding means 2 is provided that surrounds and surrounds the shot material B in the enclosed region while changing the state according to the shape of the construction site U.
- the surrounding means 2 changes the state in accordance with the build-up thickness of the welded portion W and the shape of the construction location U including the welded portion W, so that the construction including the welded portion W is performed. Since the shot material B can be held within the region that surrounds both the location U and the vibrator 26b, it corresponds to the shape of the shot peening construction location U and prevents the shot material B from being scattered around the construction location U. It becomes possible to do.
- the target construction site U when the target construction site U is a nuclear facility, the number of shot materials B can be kept constant, so that a situation in which the compressive stress applied to the construction site U is reduced is prevented. Since the construction can be completed only once, it is possible to reduce the time for the worker to enter the area where radiation is handled.
- the target construction site U when the target construction site U is a nuclear facility, as a result of preventing the situation that the shot material B remains in the nuclear facility, the work of collecting the shot material B can be eliminated, and the nuclear facility There is no risk of affecting functionality.
- the surrounding means 2 is provided so as to be able to advance and retract from the vibrator 26b side toward the construction site U, and is biased by the compression spring 22a toward the construction site U.
- the construction site U is contacted, and the advance / retreat state changes according to the shape of the construction site U.
- the state of the surrounding means 2 can be changed according to the shape of the construction location U, and the above-described effects can be obtained.
- the surrounding means 2 is configured as a rod-shaped movable portion 22 provided so that the tip is directed from the vibrator 26b side to the construction location U and can be advanced and retracted in the direction.
- a plurality of the rod-shaped movable parts 22 are arranged side by side in such a manner that they surround both the construction site U including the welded part W and the vibrator 26b and prevent the passage of the shot material B outside the enclosed area. And advancing / retreating state changes according to the shape of the construction location U.
- a plurality of rod-like movable portions 22 are arranged side by side and are configured to change the advancing / retreating state according to the shape of the construction site U, so that the construction site U has a fine shape. Since each bar-shaped movable part 22 changes the advancing / retreating state, it is possible to cope with the shape of the shot peening construction location U and prevent the shot material B from being scattered around the construction location U. Become.
- the surrounding means 2 includes the movable portion 22 whose state changes according to the shape of the construction site U including the welded portion W, and the fixed wall portion 23, and the welded portion W.
- the shot material B is fastened in the enclosed area while surrounding the construction location U including the vibrator 26b.
- the fixed wall portion 23 is provided corresponding to a portion whose shape is defined, such as the plane portion of the construction site U, and the surrounding means 2 can be arranged with this position as a reference. It becomes possible to arrange
- the movable portion 22 does not have to be configured as a plurality of rod-shaped members, and the state changes according to the shape of the construction site U including the welded portion W by the urging force of the compression spring 22a. I just need it.
- the above-described shot peening apparatus 1 when performing shot peening, the above-described shot peening apparatus 1 is moved along the welded portion W as necessary.
- the distal end shape of the movable portion 22 that contacts the construction site U including the welded portion W is formed to be inclined, curved, or spherical so that the side facing the moving direction rides on the welded portion W during the movement. Is preferred.
- the shot peening apparatus 1 is moved in the arrow X direction shown in FIG. 2, at least the side facing the arrow X direction at the tip of each movable portion 22 is formed in an inclined, curved, or spherical shape.
- FIG. 4 is a schematic sectional side view of a shot peening apparatus according to Embodiment 2 of the present invention.
- the shot peening apparatus 1 of the present embodiment includes the movable part 27 whose state changes according to the shape of the construction site U including the welded part W, like the shot peening apparatus 1 of the first embodiment described above.
- the configuration of the movable part 27 is different. Therefore, in the second embodiment, the configuration of the movable portion 27 will be described, and the same reference numerals are given to the same parts as those in the first embodiment, and the description thereof will be omitted.
- the movable portion 27 is configured as a rod-like member, is erected with respect to the bottom portion 21, and is arranged in a plurality along the periphery of the bottom portion 21.
- a plurality of movable portions 27 are arranged in parallel along two opposing sides of the bottom portion 21 formed in a rectangular shape.
- This bar-shaped movable part 27 is designed such that each interval cannot pass the shot material B used for shot peening.
- the rod-like movable portion 27 is inserted into the holes of the bottom side guide portion 25a and the opening side guide portion 25b, and can move forward and backward in the extending direction erected while being guided by the holes of the guide portions 25a and 25b.
- the telescopic rod 27b of the actuator 27a is fixed to the end portion inserted through the hole of the bottom side guide portion 25a.
- the actuator 27a include a pneumatic cylinder, a hydraulic cylinder, a servo motor, and the like. That is, the movable portion 27 is pressed toward the opening portion 24 by the actuator 27a, and moves forward and backward in a manner of being retracted toward the bottom portion 21 side.
- the actuator 27a can be controlled by the control device (not shown) described above.
- the surrounding means 2 has its opening portion 24 disposed toward the construction location U including the welded portion W, and the bottom portion 21 (vibration).
- a plurality of shot materials B are stored in a region surrounded by the child 26b), the movable portion 27, and the wall portion 23.
- the surrounding means 2 arranged toward the construction site U is arranged with a gap where the end of the wall portion 23 on the opening 24 side is not in contact with the surface of the construction site U or the shot material B does not pass.
- the movable portion 27 of the surrounding means 2 comes into contact with the surface of the construction location U by the pressing force of the actuator 27a at the end on the opening 24 side according to the arrangement of the wall portion 23.
- the surrounding means 2 surrounds both the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b.
- the shot peening apparatus 1 provides the energy necessary for shot peening to the shot material B by accelerating the shot material B by the kinetic energy applying means 26 after arranging the surrounding means 2 as described above. Thereby, the shot material B is driven out toward the opening 24 and is driven into the surface of the construction location U to give a compressive stress to the surface.
- the shot peening apparatus 1 shot peens the construction location U by ultrasonic shot peening.
- shot peening is not limited to ultrasonic shot peening, but ultrasonic shot peening is preferably used from the viewpoint of strict construction management.
- the shot peening apparatus 1 of the present embodiment is particularly suitable for construction on a construction site U having a bent or curved shape.
- the wall portion 23 is disposed on the flat portion of the construction location U, and the construction location The movable part 27 is arranged corresponding to the bent part of U.
- the wall part 23 is provided in the end on the opening part 24 side with a gap that the contact or the shot material B does not pass through the surface of the construction site U.
- the movable part 27 is provided following the shape of the construction part U by the end of the opening part 24 coming into contact with the surface of the construction part U including the welding part W by the pressing force of the actuator 27a. .
- the surrounding means 2 surrounds the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b with respect to the construction location U having a bent shape.
- the surface of the construction site U including the welded portion W and the periphery of the vibrator 26b can be similarly enclosed with respect to the construction site U having a curved shape.
- the shape of the construction site U is not limited to the above-mentioned corner, but may be a corner.
- the wall portion 23 is arranged on the flat portion of the construction location U, and the movable portion 27 is arranged corresponding to the bent portion or the curved portion of the construction location U.
- the wall part 23 is provided in the end on the opening part 24 side with a gap that the contact or the shot material B does not pass through the surface of the construction site U.
- the movable part 27 is provided following the shape of the construction part U by the end of the opening part 24 coming into contact with the surface of the construction part U including the welding part W by the pressing force of the actuator 27a.
- the surrounding means 2 surrounds the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b with respect to the construction location U having a bent or curved shape.
- the shape of the construction site U is not limited to the above-mentioned corners and out corners.
- the wall portion 23 is not provided, and only a plurality of movable portions 27 are erected on the bottom portion 21, and the movable portions 27 are arranged corresponding to the convex shape or concave shape of the construction location U.
- the movable part 27 has the end of the opening part 24 in contact with the convex or concave surface of the construction part U including the welded part W by the pressing force of the actuator 27a.
- the surrounding means 2 surrounds the surface of the construction location U including the welded part W and the periphery of the vibrator 26b with respect to the construction location U of various shapes.
- the shape of the bottom 21 of the surrounding means 2 and the vibrator 26b disposed on the surface of the bottom 21 is not limited to the above-described rectangular shape.
- a circular shape, an elliptical shape, a polygonal shape, an indefinite shape, or the like may be used in accordance with the shape of the construction location U.
- the movable part 27 and the wall part 23 are arranged in such a manner as to surround the bottom part 21 and the vibrator 26b.
- the wall portion 23 may not be disposed and only the movable portion 27 may be disposed.
- the shot peening apparatus 1 has both the kinetic energy applying means 26 for applying kinetic energy to the shot material B by the vibrator 26b, the construction location U including the welded portion W, and the vibrator 26b.
- Surrounding means 2 is provided that surrounds and surrounds the shot material B in the enclosed region while changing the state according to the shape of the construction site U.
- the surrounding means 2 changes the state in accordance with the build-up thickness of the welded portion W and the shape of the construction location U including the welded portion W, so that the construction including the welded portion W is performed. Since the shot material B can be held within the region that surrounds both the location U and the vibrator 26b, it corresponds to the shape of the shot peening construction location U and prevents the shot material B from being scattered around the construction location U. It becomes possible to do.
- the target construction site U when the target construction site U is a nuclear facility, the number of shot materials B can be kept constant, so that a situation in which the compressive stress applied to the construction site U is reduced is prevented. Since the construction can be completed only once, it is possible to reduce the time for the worker to enter the area where radiation is handled.
- the target construction site U when the target construction site U is a nuclear facility, as a result of preventing the situation that the shot material B remains in the nuclear facility, the work of collecting the shot material B can be eliminated, and the nuclear facility There is no risk of affecting functionality.
- the surrounding means 2 is provided so as to be able to advance and retract from the vibrator 26b side toward the construction location U, and is pressed by the actuator 27a toward the construction location U. Contact U and the advance / retreat state changes according to the shape of the construction site U.
- the state of the surrounding means 2 can be changed according to the shape of the construction location U, and the above-described effects can be obtained.
- the surrounding means 2 is configured as a rod-like movable portion 27 provided so that the tip is directed from the vibrator 26b side to the construction location U and can be advanced and retracted in the direction.
- a plurality of the rod-shaped movable portions 27 are arranged side by side in such a manner that they surround both the construction site U including the welded portion W and the vibrator 26b and prevent the passage of the shot material B outside the enclosed region. And advancing / retreating state changes according to the shape of the construction location U.
- a plurality of rod-like movable parts 27 are arranged side by side and are arranged to change the advancing / retreating state according to the shape of the construction site U, so that the construction site U has a fine shape. Since each bar-like movable portion 27 changes the advancing / retreating state, it is possible to cope with the shape of the shot peening construction location U and prevent the shot material B from being scattered around the construction location U. Become.
- the surrounding means 2 includes the movable portion 27 whose state changes according to the shape of the construction site U including the welded portion W, and the fixed wall portion 23, and the welded portion W.
- the shot material B is fastened in the enclosed area while surrounding the construction location U including the vibrator 26b.
- the fixed wall portion 23 is provided corresponding to a portion whose shape is defined, such as the plane portion of the construction site U, and the surrounding means 2 can be arranged with this position as a reference. It becomes possible to arrange
- the movable portion 27 configured as a plurality of rod-shaped members is not limited to a configuration in which a pressing force is applied to each by the actuator 27a.
- the movable portion 27 itself may be configured as a telescopic rod of a pneumatic cylinder or a hydraulic cylinder, and a pressing force by pneumatic pressure or hydraulic pressure may be applied to each movable portion 27 together.
- the movable part 27 does not need to be comprised as a some rod-shaped member, and should just be a structure from which a state changes according to the shape of the construction location U containing the welding part W by pressing force.
- Embodiment 2 when performing shot peening, the above-described shot peening apparatus 1 is moved along the welded portion W as necessary.
- the distal end shape of the movable portion 27 that contacts the construction site U including the welded portion W is formed to be inclined, curved, or spherical so that the side facing the moving direction rides on the welded portion W during movement.
- the shot peening apparatus 1 is moved in the arrow X direction shown in FIG. 4, at least the side facing the arrow X direction at the tip of each movable portion 27 is formed to be inclined, curved, or spherical.
- FIG. 5 is a schematic sectional side view of a shot peening apparatus according to Embodiment 3 of the present invention.
- the shot peening apparatus 1 includes the movable part 28 whose state changes according to the shape of the construction site U including the welded part W, similarly to the shot peening apparatus 1 according to the first embodiment described above.
- the configuration of the movable portion 28 is different. Therefore, in the third embodiment, the configuration of the movable unit 28 will be described, and the same reference numerals are given to the same parts as those in the first embodiment, and the description thereof will be omitted.
- the movable portion 28 has a nozzle 28 a, and a plurality of the movable portions 28 are arranged along the periphery of the bottom portion 21 with the injection port of the nozzle 28 a facing outward from the opening 24.
- the movable portion 28 has a supply pipe 28b that supplies a fluid (liquid or gas) to the nozzle 28a.
- the supply pipe 28b is connected to a reservoir that stores fluid and a pump that pumps the fluid in the reservoir.
- the pump can be controlled by the control device (not shown) described above. That is, by operating the pump, the fluid in the reservoir is supplied to the nozzle 28a via the supply pipe 28b, and the fluid is ejected from the injection port of the nozzle 28a.
- the surrounding means 2 When performing shot peening by the above-described shot peening apparatus 1, as shown in FIG. 5, the surrounding means 2 has its opening portion 24 disposed toward the construction location U including the welded portion W, and the bottom portion 21 is movable. A plurality of shot materials B are stored in a region surrounded by the portion 28 and the wall portion 23.
- the surrounding means 2 arranged toward the construction site U is arranged with a gap where the end of the wall portion 23 on the opening 24 side is not in contact with the surface of the construction site U or the shot material B does not pass.
- the movable part 28 of the surrounding means 2 forms a fluid wall when the fluid ejected from the nozzle 28a hits the surface of the construction location U.
- the surrounding means 2 surrounds both the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b.
- the shot peening apparatus 1 provides the energy necessary for shot peening to the shot material B by accelerating the shot material B by the kinetic energy applying means 26 after arranging the surrounding means 2 as described above. Thereby, the shot material B is driven out toward the opening 24 and is driven into the surface of the construction location U to give a compressive stress to the surface.
- the shot peening apparatus 1 shot peens the construction location U by ultrasonic shot peening.
- shot peening is not limited to ultrasonic shot peening, but ultrasonic shot peening is preferably used from the viewpoint of strict construction management.
- the shot peening apparatus 1 of the present embodiment is particularly suitable for construction on a construction site U having a bent or curved shape.
- the wall portion 23 is disposed on the flat portion of the construction location U, and the construction location The movable part 28 is arranged corresponding to the bent part of U.
- the wall part 23 is provided in the end on the opening part 24 side with a gap that the contact or the shot material B does not pass through the surface of the construction site U.
- the fluid jetted from the nozzle 28a hits the surface of the construction location U including the welded portion W to form a fluid wall, and the jet length of the fluid hitting the construction location U is in the shape of the construction location U. Will change accordingly.
- the surrounding means 2 surrounds the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b with respect to the construction location U having a bent shape.
- the surface of the construction site U including the welded portion W and the periphery of the vibrator 26b can be similarly enclosed with respect to the construction site U having a curved shape.
- the shape of the construction site U is not limited to the above-mentioned corner, but may be a corner.
- the wall portion 23 is disposed on the flat portion of the construction location U, and the movable portion 28 is disposed corresponding to the bent portion or the curved portion of the construction location U.
- the wall part 23 is provided in the end on the opening part 24 side with a gap that the contact or the shot material B does not pass through the surface of the construction site U.
- the fluid jetted from the nozzle 28a hits the surface of the construction location U including the welded portion W to form a fluid wall, and the jet length of the fluid hitting the construction location U is in the shape of the construction location U.
- the fluid wall is provided following the shape of the construction location U.
- the surrounding means 2 surrounds the surface of the construction location U including the welded portion W and the periphery of the vibrator 26b with respect to the construction location U having a bent or curved shape.
- the shape of the construction site U is not limited to the above-mentioned corners and out corners.
- the wall portion 23 is not provided, and a plurality of movable portions 28 are erected along the periphery of the bottom portion 21, and the movable portions 28 are arranged corresponding to the convex shape or concave shape of the construction location U.
- the movable part 28 forms the wall of the fluid by the fluid jetted from the nozzle 28a hitting the surface of the construction location U including the welded portion W, and the jet length of the fluid hitting the construction location U is the shape of the construction location U.
- the wall of the fluid is provided following the shape of the construction site U by changing according to the shape.
- the surrounding means 2 surrounds the surface of the construction location U including the welded part W and the periphery of the vibrator 26b with respect to the construction location U of various shapes.
- the shape of the bottom 21 of the surrounding means 2 and the vibrator 26b disposed on the surface of the bottom 21 is not limited to the above-described rectangular shape.
- a circular shape, an elliptical shape, a polygonal shape, an indefinite shape, or the like may be used in accordance with the shape of the construction location U.
- the movable part 28 and the wall part 23 are arranged in such a manner as to surround the bottom part 21 and the vibrator 26b.
- the wall portion 23 may not be disposed and only the movable portion 28 may be disposed.
- the shot peening apparatus 1 has both the kinetic energy applying means 26 for applying kinetic energy to the shot material B by the vibrator 26b, the construction location U including the welded portion W, and the vibrator 26b.
- Surrounding means 2 is provided that surrounds and surrounds the shot material B in the enclosed region while changing the state according to the shape of the construction site U.
- the surrounding means 2 changes the state in accordance with the build-up thickness of the welded portion W and the shape of the construction location U including the welded portion W, so that the construction including the welded portion W is performed. Since the shot material B can be held within the region that surrounds both the location U and the vibrator 26b, it corresponds to the shape of the shot peening construction location U and prevents the shot material B from being scattered around the construction location U. It becomes possible to do.
- the target construction site U when the target construction site U is a nuclear facility, the number of shot materials B can be kept constant, so that a situation in which the compressive stress applied to the construction site U is reduced is prevented. Since the construction can be completed only once, it is possible to reduce the time for the worker to enter the area where radiation is handled.
- the target construction site U when the target construction site U is a nuclear facility, as a result of preventing the situation that the shot material B remains in the nuclear facility, the work of collecting the shot material B can be eliminated, and the nuclear facility There is no risk of affecting functionality.
- the surrounding means 2 is around the construction location U including the welded portion W and the transducer 26b by the fluid jetted from the transducer 26b side toward the construction location U. And the jet length of the fluid that strikes the construction site U changes according to the shape of the construction site U.
- the state of the surrounding means 2 can be changed according to the shape of the construction location U, and the above-described effects can be obtained.
- the nozzle 28a is provided toward the inside of the opening 24, and surrounds both the construction location U including the welded portion W and the vibrator 26b.
- the fluid is ejected in such a manner that the region is narrowed toward the construction point U.
- the fluid is jetted in such a manner that the region surrounding both the construction site U including the welded portion W and the vibrator 26 b is narrowed toward the construction site U. Since it pushes inward toward the said area
- the surrounding means 2 includes the welded portion W by the movable portion 28 whose state changes according to the shape of the construction location U including the welded portion W and the fixed wall portion 23.
- the shot material B is fastened in the enclosed area while surrounding the construction location U including the vibrator 26b.
- the fixed wall portion 23 is provided corresponding to a portion whose shape is defined, such as the plane portion of the construction site U, and the surrounding means 2 can be arranged with this position as a reference. It becomes possible to arrange
- the shot peening apparatus corresponds to the shape of the portion to be shot peened, and is suitable for preventing a situation where the shot material is scattered around the construction location.
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Abstract
Description
図1~図3は、本実施の形態に係るショットピーニング装置を示す。図1に示すように、本実施の形態のショットピーニング装置1は、包囲手段(チャンバとも呼ばれる)2を備えている。包囲手段2は、底部21の周囲を可動部22および壁部23で囲み、底部21に対向して開口する開口部24が形成されている。
本実施の形態について、図面を参照して説明する。図4は、本発明の実施の形態2に係るショットピーニング装置の概略側断面図である。
本実施の形態について、図面を参照して説明する。図5は、本発明の実施の形態3に係るショットピーニング装置の概略側断面図である。
2 包囲手段
21 底部
22 可動部
22a 圧縮バネ
22b フランジ
23 壁部
24 開口部
25a 底部側ガイド部
25b 開口側ガイド部
25c 隙間
26 運動エネルギー付与手段
26a 発振手段
26b 振動子
27 可動部
27a アクチュエータ
27b 伸縮ロッド
28 可動部
28a ノズル
28b 供給管
B ショット材
U 施工箇所
W 溶接部
Claims (8)
- 原子力設備における溶接部にショット材を衝突させて圧縮応力を与えるショットピーニング装置において、
振動子により前記ショット材に運動エネルギーを付与する運動エネルギー付与手段と、
前記溶接部を含む施工箇所および前記振動子の周りを共に囲み、かつ前記施工箇所の形状に従い状態を変化させつつ当該囲んだ領域内に前記ショット材を留める包囲手段と、
を備えたことを特徴とするショットピーニング装置。 - 前記包囲手段は、前記振動子側から前記施工箇所に向けて進退可能に設けられ、前記施工箇所に向けて付勢されて前記施工箇所に接触し、前記施工箇所の形状に従い進退状態が変化することを特徴とする請求項1に記載のショットピーニング装置。
- 前記包囲手段は、前記振動子側から前記施工箇所に向けて進退可能に設けられ、前記施工箇所に向けて押圧されて前記施工箇所に接触し、前記施工箇所の形状に従い進退状態が変化することを特徴とする請求項1に記載のショットピーニング装置。
- 前記包囲手段は、前記振動子側から前記施工箇所に先端が向き、当該方向に進退可能に設けられた棒状部材として構成され、当該棒状部材は、前記溶接部を含む施工箇所および前記振動子の周りを共に囲み、当該囲んだ領域外への前記ショット材の通過を妨げる態様で複数並設して配置され、かつ前記施工箇所の形状に従い進退状態が変化することを特徴とする請求項1~3のいずれか一つに記載のショットピーニング装置。
- 前記包囲手段は、前記振動子側から前記施工箇所に向けて噴射された流体により、前記溶接部を含む施工箇所および前記振動子の周りを共に囲み、かつ前記施工箇所の形状に従って前記施工箇所に突き当たる流体の噴射長が変化することを特徴とする請求項1に記載のショットピーニング装置。
- 前記溶接部を含む施工箇所および振動子を共に囲む領域を施工箇所に向けて窄める態様で流体が噴射されていることを特徴とする請求項5に記載のショットピーニング装置。
- 前記包囲手段は、前記溶接部を含む前記施工箇所の形状に従い状態が変化する可動部と、固定の壁部とで、前記溶接部を含む施工箇所および前記振動子を共に囲みつつ当該囲んだ領域内に前記ショット材を留めることを特徴とする請求項1~6のいずれか一つに記載のショットピーニング装置。
- 溶接部にショット材を衝突させて圧縮応力を与えるショットピーニング装置において、
振動子により前記ショット材に運動エネルギーを付与する運動エネルギー付与手段と、
前記溶接部を含む施工箇所および前記振動子を共に囲み、かつ前記施工箇所の形状に従い状態を変化させつつ当該囲んだ領域内に前記ショット材を留める包囲手段と、
を備えたことを特徴とするショットピーニング装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP10837370.5A EP2514561B1 (en) | 2009-12-18 | 2010-11-02 | Shot peening apparatus |
US13/512,404 US8820131B2 (en) | 2009-12-18 | 2010-11-02 | Shot peening apparatus |
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JP2009-288310 | 2009-12-18 | ||
JP2009288310A JP5448784B2 (ja) | 2009-12-18 | 2009-12-18 | ショットピーニング装置 |
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PCT/JP2010/069502 WO2011074340A1 (ja) | 2009-12-18 | 2010-11-02 | ショットピーニング装置 |
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US (1) | US8820131B2 (ja) |
EP (1) | EP2514561B1 (ja) |
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US9809893B2 (en) * | 2015-02-26 | 2017-11-07 | City University Of Hong Kong | Surface mechanical attrition treatment (SMAT) methods and systems for modifying nanostructures |
WO2019008901A1 (ja) * | 2017-07-07 | 2019-01-10 | 新東工業株式会社 | ショットピーニング方法 |
CN112677053B (zh) * | 2020-12-21 | 2022-02-18 | 盐城成越环保设备有限公司 | 一种利用电磁驱动的高效抛丸机 |
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Also Published As
Publication number | Publication date |
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US8820131B2 (en) | 2014-09-02 |
JP5448784B2 (ja) | 2014-03-19 |
EP2514561A1 (en) | 2012-10-24 |
US20120227454A1 (en) | 2012-09-13 |
EP2514561B1 (en) | 2017-02-22 |
EP2514561A4 (en) | 2015-11-11 |
JP2011125978A (ja) | 2011-06-30 |
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