A castings ndt non-destructive testing device

Abstract

The utility model discloses a cast NDT nondestructive testing device, the utility model relates to cast NDT nondestructive testing device technical field. The inside sliding joint of first sliding groove has a plurality of clamping plates, and the steel ball is filled between one end of a plurality of clamping plates and first sliding groove, and the side surface fixed connection of reset board has reset spring, and the sliding piece of the outer sleeve of screw rod is driven to rotate through motor and makes to the middle of the sliding piece, and the cast is clamped, because the plurality of clamping plates of sliding piece inside sliding joint can retract the inner chamber of sliding piece according to the shape of cast, the steel ball filled between the one end of clamping plate and sliding piece inner chamber is extruded, makes the steel ball evenly distribute in the gap formed between clamping plate and sliding piece, and the cast is clamped to the cast appearance, when meeting the detection surface that is difficult to stand, long -time handheld is more inconvenient, leads to work piece movement to destroy surface penetrant or developing agent, influences detection result.

Description

Technical Field

[0001] This utility model relates to the technical field of NDT (non-destructive testing) devices for castings, specifically an NDT device for castings. Background Technology

[0002] Castings are metal shaped objects obtained by various casting methods. They are objects with a certain shape, size and properties obtained by pouring, injecting, sucking or other casting methods into a pre-prepared mold after smelting liquid metal, cooling and then grinding and other subsequent processing methods.

[0003] NDT refers to a testing method that does not damage or affect the future performance or use of materials or workpieces. By using NDT, defects existing inside and on the surface of materials or workpieces can be found, geometric features and dimensions of workpieces can be measured, and the internal composition, structure, physical properties and state of materials or workpieces can be determined. NDT can be applied to many aspects such as product design, material selection, processing and manufacturing, finished product inspection, and in-service inspection (maintenance), and can play an optimal role in balancing quality control and cost reduction.

[0004] Existing methods for testing castings using liquid penetrant testing have drawbacks. Due to the varying shapes of the castings, when encountering surfaces that are difficult to stand on, manual handling is required. Typically, the penetrant or developer needs to stand still for a period of time before observation, which is inconvenient due to prolonged hand-holding. Furthermore, movement of the workpiece can cause the penetrant or developer to fall off the surface, affecting the test results. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a non-destructive testing (NDT) device for castings. It solves the problem that, due to the different shapes of castings, when encountering testing surfaces that are difficult to stand on, manual handling of the casting is required. Typically, the penetrant or developer needs to stand still for a period of time before observation, which is inconvenient for prolonged hand-holding. Furthermore, movement of the workpiece can cause the penetrant or developer to fall off the surface, affecting the test results.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a non-destructive testing (NDT) device for castings. It includes a spraying assembly, a clamping assembly at the top of the spraying assembly, and a sliding member. One end of the sliding member has a first groove, and the bottom of the first groove has a downwardly recessed second groove. Multiple clamping plates are slidably connected inside the first groove. Steel balls are filled between one end of each clamping plate and the first groove. A reset plate extends downward from the bottom of each clamping plate, and a reset spring is fixedly connected to the side of the reset plate.

[0007] Preferably, the spraying assembly includes a base plate, with movable grooves at both ends of the surface of the base plate. A lead screw is movably connected inside each of the movable grooves at both ends. A support rod is fixedly connected to one end of the base plate. The top of the support rod is bent towards one end and a fixing member is fixedly connected to the bottom. A spray head is fixedly connected to the bottom of the fixing member.

[0008] Preferably, a material conveying pipe is fixedly connected to the side of the support rod, and a water pump is fixedly connected to one end of the material conveying pipe.

[0009] Preferably, the lead screws movably connected inside the movable slots at both ends of the base plate are provided with threaded structures, and the threaded structures on the surfaces of the lead screws at both ends are in opposite directions.

[0010] Preferably, one end of the slider extends downward to a connecting plate, and the surface of the connecting plate is provided with a connecting hole, through which the slider is sleeved onto the outside of the lead screw.

[0011] Preferably, one end of the reset spring is fixedly connected to the side of the reset plate, and the other end of the reset spring is fixedly connected to the inner wall of the second slide groove.

[0012] Preferably, the movable grooves at both ends of the base plate surface are each connected to a sliding component via a lead screw.

[0013] Preferably, a motor is fixedly connected to the side of the base plate, and the output end of the motor passes through the side of the base plate and is fixedly connected to the side wall of the movable groove with a lead screw.

[0014] This invention provides a non-destructive testing (NDT) device for castings. Compared with the prior art, it has the following advantages:

[0015] 1. A non-destructive testing (NDT) device for castings, comprising placing the casting to be tested between symmetrically arranged sliding parts on the top of a base plate, and a motor driving a lead screw to rotate, causing the sliding parts sleeved on the outside of the lead screw to move towards the center to clamp the casting. Multiple clamping plates slidably connected inside the sliding parts can retract into the inner cavity of the sliding parts according to the shape of the casting, compressing the steel balls filling the space between one end of the clamping plate and the inner cavity of the sliding parts. This ensures the steel balls are evenly distributed in the gap between the clamping plates and the sliding parts, adapting to the shape of the casting and clamping it accordingly. This avoids the inconvenience of prolonged hand-held operation on surfaces where the casting is difficult to stand on, which could lead to workpiece movement and damage to the surface penetrant or developer, affecting the test results.

[0016] 2. A non-destructive testing (NDT) device for castings, wherein a nozzle is provided at the bottom of a fixing component. Since the surface of the casting needs to be sprayed with a penetrant or developer and then allowed to stand, the nozzles at the bottom of the fixing component spray the penetrant or developer onto the surface of the casting held between the sliding components through a feed pipe. The nozzles for penetrant and developer are separate to avoid the mixing of reagents when the same nozzle is used to spray the surface of the casting, which would affect the test results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the spraying component structure of this utility model.

[0019] Figure 3 This is a side view of the clamping assembly of this utility model.

[0020] Figure 4 This is a schematic diagram of the clamping component structure of this utility model.

[0021] In the diagram: 1. Spraying assembly; 2. Clamping assembly; 11. Base plate; 12. Movable groove; 13. Lead screw; 14. Support rod; 15. Fixing component; 16. Spray nozzle; 17. Material conveying pipe; 18. Water pump; 19. Motor; 21. Sliding component; 210. First sliding groove; 211. Second sliding groove; 212. Connecting plate; 213. Connecting hole; 22. Clamping plate; 220. Reset plate; 23. Steel ball; 24. Reset spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4This utility model provides a technical solution: a non-destructive testing (NDT) device for castings. It includes a spraying assembly 1, with a clamping assembly 2 on its top. The clamping assembly 2 includes a slider 21, one end of which has a first groove 210. A second groove 211 is recessed at the bottom of the first groove 210. Multiple clamping plates 22 are slidably connected inside the first groove 210. Steel balls 23 are filled between one end of each clamping plate 22 and the first groove 210. A reset plate 220 extends downward from the bottom of each clamping plate 22. A reset spring 24 is fixedly connected to the side of the reset plate 220. When the clamping plate 22 clamps the casting, the second groove 211 retracts into the slider 21, at which point the reset plate 220 will retract into the second groove 211. The internal pressure of the 11 component compresses the return spring 24. When the clamping of the casting is released, the return spring 24 returns to its original shape due to its own elasticity, which drives the clamping plate 22 back to its original state. The steel ball 23 fills the gap between the clamping plate 22 and the slide 21. When the clamping plate 22 adapts to the shape of the casting, the length of the clamping plate 22 retracting into the slide 21 varies, and the steel ball 23 is spherical. When the steel ball 23 is compressed, it fills the irregular gap formed between the clamping plate 22 and the slide 21, supporting one end of the clamping plate 22 and ensuring that the compression of the casting by the other end of the clamping plate 22 can clamp the casting.

[0024] Please see Figure 1-4The spraying assembly 1 includes a base plate 11. Movable grooves 12 are formed at both ends of the base plate 11. Screws 13 are movably connected inside the movable grooves 12 at both ends. A support rod 14 is fixedly connected to one end of the base plate 11. The top of the support rod 14 is bent towards one end, and a fixing member 15 is fixedly connected to its bottom. A nozzle 16 is fixedly connected to the bottom of the fixing member 15. Multiple nozzles 16 are provided at the bottom of the fixing member 15. A feed pipe 17 is fixedly connected to the side of the support rod 14. A water pump 18 is fixedly connected to one end of the feed pipe 17. The multiple nozzles 16 can spray penetrant or developer onto the surface of the casting held below through the feed pipe 17, allowing the penetrant or developer to be used separately to avoid mixing and affecting the test results. The screws 13 movably connected inside the movable grooves 12 at both ends of the base plate 11 have a threaded structure on their surface. The threaded structures on the surface of the 3 are in opposite directions. When the motor 19 drives the lead screw 13 to rotate, the opposite threaded structures drive the sliding member 21, which is sleeved on the outside through the connecting hole 213, to move towards the center at the same time to clamp the casting. One end of the sliding member 21 extends downward to a connecting plate 212. The surface of the connecting plate 212 has a connecting hole 213. The sliding member 21 is sleeved on the outside of the lead screw 13 through the connecting hole 213. One end of the return spring 24 is fixedly connected to the side of the return plate 220, and the other end of the return spring 24 is fixedly connected to the inner wall of the second slide groove 211. The sliding member 21 is movably connected to the movable grooves 12 opened at both ends of the surface of the base plate 11 through the lead screw 13. The motor 19 is fixedly connected to the side of the base plate 11. The output end of the motor 19 passes through the side of the base plate 11 and is fixedly connected to the side wall of the movable groove 12 with the lead screw 13.

[0025] In use, the casting to be inspected is first placed face up on the top of the base plate 11. The casting is then placed between the symmetrically arranged sliding members 21 on the top of the base plate 11. The motor 19 drives the lead screw 13 to rotate, causing the sliding members 21, which are sleeved on the outside of the lead screw 13, to move towards the center, clamping the casting. Because multiple clamping plates 22, which are slidably connected inside the sliding members 21, can retract into the inner cavity of the sliding members 21 according to the shape of the casting, the space between one end of the clamping plate 22 and the inner cavity of the sliding member 21 is filled... The steel balls 23 are squeezed to fill the irregular gap between the clamping plate 22 and the slide 21, supporting one end of the clamping plate 22 and clamping the casting according to its shape. The spray nozzle 16 at the bottom of the fixing member 15 sprays penetrating agent onto the surface of the casting clamped between the slide 21 through the feed pipe 17. After standing, it is rinsed, and then a developer is sprayed to detect defects or cracks on the surface of the casting.

[0026] In this embodiment, a casting NDT non-destructive testing device is described. The structural features and working principle of the aforementioned components are based on existing technologies and will not be detailed here.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foundry NDT non-destructive testing device comprising a spray assembly (1), characterized in that: The top of the spraying assembly (1) is provided with a clamping assembly (2); The clamping assembly (2) includes a slide (21), one end of which is provided with a first slide groove (210), the bottom of which is recessed with a second slide groove (211), and a plurality of clamping plates (22) are slidably connected inside the first slide groove (210). A steel ball (23) is filled between one end of the plurality of clamping plates (22) and the first slide groove (210). A reset plate (220) extends downward from the bottom of the clamping plate (22), and a reset spring (24) is fixedly connected to the side of the reset plate (220). The spraying assembly (1) includes a base plate (11), and movable grooves (12) are provided at both ends of the surface of the base plate (11). A lead screw (13) is movably connected inside the movable grooves (12) at both ends. A support rod (14) is fixedly connected to one end of the base plate (11). After the top of the support rod (14) is bent to one end, a fixing member (15) is fixedly connected to the bottom. A spray nozzle (16) is fixedly connected to the bottom of the fixing member (15).

2. A foundry NDT non-destructive testing device according to claim 1, characterized in that: The side of the support rod (14) is fixedly connected to a conveying pipe (17), and one end of the conveying pipe (17) is fixedly connected to a water pump (18).

3. A foundry NDT non-destructive testing device according to claim 1, characterized in that: The screw rods (13) connected inside the movable grooves (12) at both ends of the base plate (11) are provided with threaded structures on their surfaces, and the threaded structures on the surfaces of the screw rods (13) at both ends are in opposite directions.

4. A foundry NDT non-destructive testing device according to claim 1, characterized in that: One end of the slider (21) extends downward to a connecting plate (212), and the surface of the connecting plate (212) is provided with a connecting hole (213). The slider (21) is sleeved on the outside of the lead screw (13) through the connecting hole (213).

5. The NDT non-destructive testing device for castings according to claim 1, characterized in that: One end of the reset spring (24) is fixedly connected to the side of the reset plate (220), and the other end of the reset spring (24) is fixedly connected to the inner wall of the second slide groove (211).

6. A foundry NDT non-destructive testing device according to claim 3, characterized in that: The movable grooves (12) opened at both ends of the base plate (11) are all connected to sliding parts (21) by screw rods (13).

7. A foundry NDT non-destructive testing device according to claim 6, characterised in that: A motor (19) is fixedly connected to the side of the base plate (11). The output end of the motor (19) passes through the side of the base plate (11) and is fixedly connected to the side wall of the movable groove (12) with the lead screw (13).

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