U-shaped sample cryogenic ultrasonic shot peening treatment device with continuously adjustable working distance

Abstract

The invention relates to the technical field of ultrasonic shot peening, and particularly discloses a U-shaped sample cryogenic ultrasonic shot peening treatment device with continuously adjustable working distance, which comprises a shell, an ultrasonic shot peening probe, a positioning piece and a peening shot, the shell is provided with a shot blasting cavity; the ultrasonic shot blasting probe is configured to be inserted into the shot blasting cavity; the positioning piece is used for accurately positioning the U-shaped piece; the shot peening device is arranged between the ultrasonic shot peening probe and the positioning piece; two cover plates are arranged at the tail end of the positioning piece and are used for covering the side surface of the U-shaped piece, so that a liquid nitrogen chamber is formed between the positioning piece and the U-shaped piece; the positioning piece can be axially and movably arranged on the shell along the central axis of the shot blasting cavity; according to the U-shaped sample cryogenic ultrasonic shot peening treatment device with the continuously adjustable working distance, continuous adjustment of the working distance and cryogenic ultrasonic shot peening treatment can be achieved at the same time, so that the surface strengthening requirement of the U-shaped sample is met, the treatment intensity is adjusted and controlled according to the actual requirement, and therefore the more accurate and effective strengthening effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic shot peening, and in particular to a U-shaped sample deep-cold ultrasonic shot peening processing device with continuously adjustable working distance. Background Art

[0002] Ultrasonic shot peening technology mainly improves the strength of materials by refining the grains on the surface of parts and components, and is widely used in surface strengthening of alloys. However, the existing ultrasonic shot peening technology has little research on the treatment of unconventional U-shaped samples and faces some technical bottlenecks.

[0003] On the one hand, the existing methods cannot achieve continuous adjustment of the working distance, resulting in the inability to accurately control the shot peening effect according to different processing requirements; on the other hand, traditional ultrasonic shot peening technology is difficult to apply to cryogenic treatment, which limits its application under some special working conditions. For U-shaped samples, the complex shape and large differences in surface treatment requirements make it difficult for conventional technology to meet the requirements of strength improvement. Therefore, it is still a technical problem to be solved to obtain U-shaped samples with different processing strengths according to actual needs. In order to solve these problems, it is urgent to develop a new technology that can achieve precise surface strengthening of unconventional U-shaped samples to meet diverse application needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a U-shaped sample deep-cold ultrasonic shot peening treatment device with a continuously adjustable working distance, which can simultaneously realize continuous adjustment of the working distance and deep-cold ultrasonic shot peening treatment to meet the surface strengthening needs of U-shaped samples with unconventional shapes, and adjust the treatment intensity according to actual needs, thereby achieving a more precise and effective strengthening effect.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A U-shaped sample deep-cold ultrasonic shot peening device with continuously adjustable working distance comprises a shell, an ultrasonic shot peening probe, a positioning piece and shot peening.

[0007] The shell has a shot peening cavity; the ultrasonic shot peening probe is configured to be inserted into the shot peening cavity; the positioning piece is used to position the U-shaped piece; and the shot peening is configured between the ultrasonic shot peening probe and the positioning piece.

[0008] Two cover sheets are provided at the end of the positioning piece, and the cover sheets are used to cover the side surfaces of the U-shaped piece, so that a liquid nitrogen chamber is formed between the positioning piece and the U-shaped piece. Since the liquid nitrogen chamber is formed, ultrasonic shot peening treatment at a cryogenic temperature can be achieved by inputting liquid nitrogen into the liquid nitrogen chamber, thereby improving the strengthening effect of the U-shaped piece.

[0009] The positioning member is configured to be axially movable on the shell along the central axis of the shot blasting chamber.

[0010] In the U-shaped sample deep-cold ultrasonic shot peening processing device with continuously adjustable working distance provided in at least one embodiment of the present disclosure, the positioning piece is provided with a positioning socket that matches the U-shaped piece.

[0011] In the U-shaped sample deep-cold ultrasonic shot peening processing device with continuously adjustable working distance provided by at least one embodiment of the present disclosure, the two cover plates are arranged in left-right symmetry.

[0012] The positioning member and the cover sheet are integrally arranged.

[0013] In the U-shaped sample deep-cold ultrasonic shot peening processing device with continuously adjustable working distance provided by at least one embodiment of the present disclosure, the shell has a connecting ring, and the shell is fixedly connected to the connecting ring.

[0014] The connecting ring is threadedly connected to the positioning member.

[0015] The central axis of the connecting ring coincides with the central axis of the shot blasting chamber.

[0016] By twisting the positioning piece, the positioning piece can be moved axially along the central axis of the shot peening chamber, thereby adjusting the position of the U-shaped piece. Since the working distance can be continuously adjusted, it can not only meet different actual processing needs, but also adapt to surface treatment needs under different shot peening intensities.

[0017] In the U-shaped sample deep-cold ultrasonic shot peening processing device with continuously adjustable working distance provided by at least one embodiment of the present disclosure, the ultrasonic shot peening probe is fixedly connected to the shell.

[0018] In the U-shaped sample deep-cold ultrasonic shot peening processing device with continuously adjustable working distance provided in at least one embodiment of the present disclosure, the shot peening is one of metal shot peening, ceramic shot peening and glass shot peening.

[0019] In the U-shaped sample deep-cold ultrasonic shot peening processing device with continuously adjustable working distance provided in at least one embodiment of the present disclosure, an internal thread is provided on the inner ring surface of the connecting ring.

[0020] The positioning member is provided with an external thread, and the connecting ring and the positioning member are connected via the external thread and the internal thread.

[0021] In the U-shaped sample deep-cold ultrasonic shot peening processing device with continuously adjustable working distance provided in at least one embodiment of the present disclosure, the ultrasonic shot peening probe 20 adopts an ultrasonic generator, and the ultrasonic generator drives the shot peening to reciprocate at an operating frequency of 20 kHz, thereby driving the shot peening to perform high-intensity impact on the surface of the U-shaped part, causing the U-shaped part to undergo plastic deformation, achieving surface nano-sizing, and introducing residual compressive stress, thereby improving the sample's resistance to stress corrosion cracking.

[0022] The beneficial effects of the present invention are: it can realize deep-cold ultrasonic shot peening treatment of unconventional U-shaped samples, and its working distance can be continuously adjusted according to actual needs, so as to effectively obtain a higher strength surface strengthening layer and significantly improve the material's resistance to stress corrosion cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a stereoscopic diagram of a U-shaped sample deep-cold ultrasonic shot peening device with continuously adjustable working distance according to the present invention.

[0025] Figure 2 The present invention is a cross-sectional view of a U-shaped sample deep-cold ultrasonic shot peening device with continuously adjustable working distance.

[0026] Figure 3 The present invention is a top view of a U-shaped sample deep-cold ultrasonic shot peening device with continuously adjustable working distance.

[0027] Figure 4 It is a connection diagram of the connecting ring and the positioning piece.

[0028] Figure 5 It is a schematic diagram of the assembly of the U-shaped part and the positioning part.

[0029] In the figure:

[0030] 10. Shell; 11. Shot peening chamber; 12. Connecting ring;

[0031] 20. Ultrasonic shot peening probe;

[0032] 30. Positioning piece; 31. Cover plate; 32. Positioning socket; 33. External thread;

[0033] 40. Shot peening;

[0034] 50. U-shaped parts;

[0035] 60. Liquid nitrogen room. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0037] Example

[0038] like Figure 1 and 2 As shown, a U-shaped sample cryogenic ultrasonic shot peening device with continuously adjustable working distance includes a shell 10, an ultrasonic shot peening probe 20, a positioning member 30 and a shot peening 40.

[0039] Specifically, the housing 10 has a shot peening cavity 11 ; the ultrasonic shot peening probe 20 is configured to be inserted into the shot peening cavity 11 ; the positioning member 30 is used to position the U-shaped member 50 ; and the shot peening 40 is configured between the ultrasonic shot peening probe 20 and the positioning member 30 .

[0040] When in use, the ultrasonic shot peening probe 20 uses an ultrasonic generator, which drives the shot peening to reciprocate at an operating frequency of 20kHz, driving the shot peening to perform high-intensity impact on the surface of the U-shaped part, causing the U-shaped part to undergo plastic deformation, achieving surface nano-sizing, and introducing residual compressive stress, thereby improving the sample's resistance to stress corrosion cracking.

[0041] Specifically, the shot peening 40 is one of metal shot peening, ceramic shot peening and glass shot peening, and metal shot peening is preferably used.

[0042] The specific structure of the positioning member 30 will be further described below with reference to the accompanying drawings.

[0043] like Figure 3 , 4 As shown in FIG. 5 , two cover sheets 31 are disposed at the end of the positioning member 30 , and a positioning hole 32 matched with the U-shaped member 50 is disposed on the positioning member 30 , and the positioning hole 32 is used for the U-shaped member 50 to be inserted and positioned.

[0044] Specifically, the two cover sheets 31 are disposed symmetrically, and the positioning member 30 and the cover sheet 31 are disposed integrally. The cover sheet 31 is used to cover the side of the U-shaped member 50, so that a liquid nitrogen chamber 60 is formed between the positioning member 30 and the U-shaped member 50.

[0045] Specifically, arc edges are used on both sides of the U-shaped part 50, which can increase the processing area of ​​the U-shaped part 50. At the same time, the cover plate 31 imitates the arc edges of the U-shaped part 50, which can play a good limiting effect. During shot peening, the U-shaped part 50 is not easily knocked out of the positioning hole 32.

[0046] Since the liquid nitrogen chamber 60 is formed, the liquid nitrogen is input into the liquid nitrogen chamber 60 to achieve ultrasonic shot peening at a cryogenic temperature, thereby improving the strengthening effect of the U-shaped member 50 .

[0047] The specific connection method between the positioning member 30 and the ultrasonic shot peening probe 20 and the housing 10 will be further described below with reference to the accompanying drawings.

[0048] like Figure 1 , 2 As shown in FIG. 4 , the housing 10 has a connecting ring 12 , and the housing 10 is fixedly connected to the connecting ring 12 . The connecting ring 12 is threadedly connected to the positioning member 30 , and the central axis of the connecting ring 12 coincides with the central axis of the shot blasting chamber 11 .

[0049] Specifically, an internal thread (not shown) is provided on the inner ring surface of the connecting ring 12 , and an external thread 33 is provided on the positioning member 30 . The connecting ring 12 and the positioning member 30 are connected via the external thread 33 and the internal thread.

[0050] When in use, the positioning member 30 can be moved axially along the central axis of the shot peening chamber 11 by twisting the positioning member 30, thereby adjusting the position of the U-shaped member. Since the working distance is continuously adjustable, it can meet different actual processing requirements and surface processing requirements under different shot peening intensities.

[0051] Specifically, the ultrasonic shot peening probe 20 is fixedly connected to the housing 10 .

[0052] Although the embodiments of the present application have been shown and described above, the scope of protection of the present invention is not limited thereto, and any changes or substitutions that are not conceivable through creative work should be included in the scope of protection of the present invention; unless explicitly stated, any elements, actions or instructions used in this document should not be interpreted as critical or necessary.

Claims

1. A U-shaped sample cryogenic ultrasonic shot peening device with continuously adjustable working distance, characterized in that: include: a housing having a shot peening cavity; an ultrasonic shot peening probe configured to be inserted into the shot peening chamber; A positioning piece, used for positioning the U-shaped piece; as well as Shot peening, arranged between the ultrasonic shot peening probe and the positioning member; Wherein, two cover sheets are provided at the end of the positioning member, and the cover sheets are used to cover the side surfaces of the U-shaped member so that a liquid nitrogen chamber is formed between the positioning member and the U-shaped member; Wherein, the positioning member is configured to be axially movable along the central axis of the shot blasting chamber and is mounted on the shell.

2. The U-shaped sample cryogenic ultrasonic shot peening device with continuously adjustable working distance according to claim 1, characterized in that: The positioning piece is provided with a positioning plug hole matched with the U-shaped piece.

3. The U-shaped sample cryogenic ultrasonic shot peening device with continuously adjustable working distance according to claim 1, characterized in that: The two cover plates are arranged symmetrically. The positioning member and the cover sheet are integrally arranged.

4. The U-shaped sample cryogenic ultrasonic shot peening device with continuously adjustable working distance according to claim 1, characterized in that: The housing has a connecting ring, and the housing is fixedly connected to the connecting ring; The connecting ring is threadedly connected to the positioning member; The central axis of the connecting ring coincides with the central axis of the shot blasting chamber.

5. The U-shaped sample cryogenic ultrasonic shot peening device with continuously adjustable working distance according to claim 1, characterized in that: The ultrasonic shot peening probe is fixedly connected to the shell.

6. The U-shaped sample cryogenic ultrasonic shot peening device with continuously adjustable working distance according to claim 1, characterized in that: The peening shot is one of metal shot, ceramic shot and glass shot.

7. The U-shaped sample cryogenic ultrasonic shot peening device with continuously adjustable working distance according to claim 4, characterized in that: An internal thread is arranged on the inner ring surface of the connecting ring; The positioning member is provided with an external thread, and the connecting ring and the positioning member are connected via the external thread and the internal thread.

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