A titanium alloy bar tensile properties testing device

Abstract

The present invention provides a titanium alloy bar tensile performance testing device, which relates to the technical field of solid material strength testing, and comprises a base plate, a deformation detection component, a front end tensile mechanism and a rear end fixing mechanism. An end plate is integrally formed at one end of the base plate, a hydraulic rod is screwed on the inner side of the end plate, the hydraulic rod and the front end tensile mechanism are screwed as a whole, and the front end tensile mechanism and the rear end fixing mechanism both comprise a threaded column, a first baffle and a second baffle. The present invention fixes the titanium alloy bar to be tested at both ends by welding, and expands the welding range by multi-layer butt rings, so that the two ends of the bar are more firm and reliable with the fixed structure, and the applied tension is more uniform, ensuring that the tension acts more concentratedly on the middle area of ​​the titanium alloy bar, reducing the detection cost, and detecting whether there is a displacement change at the fixed positions at both ends, and also being able to quickly locate the specific area where slight deformation actually occurs.

Description

Technical Field

[0001] The invention relates to the technical field of solid material strength testing, in particular to a titanium alloy bar tensile performance testing device. Background Art

[0002] The tensile properties of titanium alloy bars are affected by many factors, including material composition, heat treatment process, microstructure, etc. Material composition has a significant impact on the tensile properties of titanium alloy bars. For example, TC25G titanium alloy improves its strength and toughness by adjusting the content of alloying elements such as Mo, Zr, and W, and is widely used in the aerospace field. Therefore, after the production of different types of titanium alloy bars is completed, sampling is required and then the tensile properties are tested.

[0003] In the prior art, the tensile properties testing device applied to titanium alloy bars clamps and locks the two ends of the titanium alloy bar through clamping devices at both ends, and then provides a pulling force to the target value through hydraulic equipment, and observes whether the titanium alloy bar is deformed to complete the testing process. However, when this scheme is applied to thicker titanium alloy bars, it is very easy to cause sliding in the clamping areas at both ends. If it is done by drilling, it will damage the titanium alloy bar body, which will make the end area more prone to deformation. On the other hand, after reaching the set tensile force, the deformation of some titanium alloy bars is very small, which is difficult to detect quickly. The area and range of the actual deformation of the bar cannot be quickly determined only through the measurement process of the position changes at both ends. Therefore, the deformation data finally obtained is not comprehensive enough. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a titanium alloy bar tensile properties testing device to solve the problems raised in the above-mentioned background technology. The present invention fixes the titanium alloy bar to be tested at both ends by welding, and expands the welding range by multi-layer butt rings, so that the two ends of the bar and the fixed structure are more firm and reliable, and the applied tension is more uniform, ensuring that the tension acts more concentratedly on the middle area of ​​the titanium alloy bar, reducing the detection cost, and can detect whether there is a displacement change in the fixed positions at both ends, and can also quickly locate the specific area where slight deformation actually occurs.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a titanium alloy bar tensile performance detection device, including a detection device body, the detection device body including a base plate, a deformation detection assembly, a front end stretching mechanism and a rear end fixing mechanism, one end of the base plate is integrally formed with an end plate, the inner side of the end plate is screwed with a hydraulic rod, the hydraulic rod is screwed with the front end stretching mechanism part as a whole, the front end stretching mechanism and the rear end fixing mechanism both include a threaded column, a first baffle and a second baffle, and the central axis of the front end stretching mechanism and the rear end fixing mechanism coincide with each other, a column is welded at the bottom end of the deformation detection assembly, and a light strip and a photosensitive module are embedded in the interior of the deformation detection assembly, the titanium alloy bar to be tested passes through the interior of the deformation detection assembly, and the two ends of the titanium alloy bar to be tested are respectively against the front end stretching mechanism and the rear end fixing mechanism.

[0006] Furthermore, a connecting column is integrally formed between the first baffle plate and the second baffle plate, an adjusting knob is inserted in the middle of the second baffle plate, a pressure module is screwed to the end of the adjusting knob, the threaded column passes through the surface of the second baffle plate, a sealing plate is welded to the end of the rear end fixing mechanism, and a fixing seat is integrally formed at the bottom of the sealing plate.

[0007] Furthermore, a handle is integrally formed at one end of the threaded column, and the surface of the threaded column is clamped on both sides of the second baffle through a convex ring. The number of the threaded columns is two, and a support rod is welded to the surface of the base plate. The top of the support rod is mounted on the surface of the connecting column on the front end stretching mechanism through a ring.

[0008] Furthermore, a pressure dividing ring is sleeved on the surface of the threaded column, and an end clamp is sleeved on the end of the threaded column. A docking ring is embedded on the inner side of the pressure dividing ring, a welding sleeve is integrally formed on one side of the docking ring, and an inner screw hole is opened on the edge of the docking ring.

[0009] Furthermore, an outer screw hole is opened inside the pressure divider ring, and a guide hole is opened on the side of the pressure divider ring, and the threaded column passes through the inside of the guide hole. The surfaces of the pressure divider ring, the docking ring and the welding sleeve are all engraved with reference lines, and the thickness of the pressure divider ring and the docking ring are the same.

[0010] Furthermore, the edge of the welding sleeve is welded and fixed to the surface of the titanium alloy rod, and the pressure dividing ring and the docking ring are fixed as a whole by passing screws through the outer screw hole and the inner screw hole at one time.

[0011] Furthermore, a pulling sleeve is sleeved on the surface of the threaded column, one side of the pulling sleeve is pressed against the surface of the pressure dividing ring, a locking hole is opened on the side of the end clamping plate, and the end of the threaded column is embedded in the locking hole.

[0012] Furthermore, a convex plate is integrally formed on the surface of the bottom plate, a guide rail is welded on the inner side of the convex plate, a slide plate is sleeved on the surface of the guide rail, a column is integrally formed on the top of the slide plate, and splicing shells are integrally formed on both ends of the deformation detection component.

[0013] Furthermore, a splicing plate is integrally formed on the side of the splicing sleeve, and a detection sleeve is integrally formed in the middle of the splicing sleeve. An inner convex ring is attached to the inner wall of the detection sleeve, and the inner ring diameter of the inner convex ring is the same as the diameter of the titanium alloy rod to be tested.

[0014] Furthermore, sealing rings are mounted on the inner walls at both ends of the splicing shell, and the splicing shell is pressed against the surface of the titanium alloy rod through the sealing rings. A light strip and a photosensitive module are installed inside the splicing shell, and the light strip and the photosensitive module are respectively arranged on both sides of the inner convex ring.

[0015] Beneficial effects of the present invention:

[0016] The titanium alloy bar tensile properties testing device fixes the titanium alloy bar to be tested at both ends by welding, and expands the welding range by multi-layer butt rings, so that the two ends of the bar and the fixed structure are more firm and reliable, and the applied tension is more uniform, ensuring that the tension acts more concentratedly on the middle area of ​​the titanium alloy bar.

[0017] Each docking ring and pressure divider ring of the titanium alloy bar tensile performance testing device can be disassembled and assembled. Therefore, after welding and testing each time, only the docking ring needs to be replaced, so that the fixing mechanism part can be reused, which reduces the equipment cost. The disassembly and assembly process is more flexible and can flexibly control the specific position and range of the tension actually applied to the two ends of the titanium alloy bar.

[0018] The titanium alloy bar tensile performance testing device installs pressure modules in both the front-end tensile mechanism and the rear-end fixing mechanism, so that it can detect whether there is any displacement change in the fixed positions at both ends. At the same time, after completing the test of applying a fixed tensile force, the deformation detection component in the middle moves along the surface of the titanium alloy bar, so as to quickly locate the specific area where slight deformation actually occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the appearance of a titanium alloy bar tensile property testing device of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the front end stretching mechanism part of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the rear end fixing mechanism part of the present invention;

[0022] Figure 4 It is a schematic diagram of the connection between the pressure dividing ring, the docking ring and the end clamping plate of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the baffle part of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the deformation detection component part of the present invention;

[0025] Figure 7 is a cross-sectional view of the interior of the deformation detection assembly of the present invention;

[0026] In the figure: 1. bottom plate; 2. front end stretching mechanism; 3. rear end fixing mechanism; 4. deformation detection component; 5. end plate; 6. hydraulic rod; 7. support rod; 8. first baffle; 9. second baffle; 10. connecting column; 11. threaded column; 12. pressure dividing ring; 13. docking ring; 14. end clamp; 15. sealing plate; 16. fixing seat; 17. adjusting knob; 18. welding sleeve; 19. inner screw hole; 20. reference line; 21. guide hole; 22. outer screw hole; 23. pulling sleeve; 24. locking hole; 25. pressure module; 26. handle; 27. convex plate; 28. guide rail; 29. ​​slide plate; 30. column; 31. splicing shell; 32. detection sleeve; 33. splicing plate; 34. light strip; 35. photosensitive module; 36. inner convex ring; 37. sealing ring. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] See also Figures 1 to 7 The present invention provides the following technical solutions: a titanium alloy bar tensile performance testing device, comprising a testing device body, the testing device body comprising a bottom plate 1, a deformation detection component 4, a front end stretching mechanism 2 and a rear end fixing mechanism 3, one end of the bottom plate 1 is integrally formed with an end plate 5, the inner side of the end plate 5 is screwed with a hydraulic rod 6, the hydraulic rod 6 is screwed with the front end stretching mechanism 2 as a whole, the front end stretching mechanism 2 and the rear end fixing mechanism 3 both include a threaded column 11, a first baffle 8 and a second baffle 9, and the central axis of the front end stretching mechanism 2 and the rear end fixing mechanism 3 coincide, a column 30 is welded at the bottom end of the deformation detection component 4, and a light strip 34 and a photosensitive module 35 are embedded in the deformation detection component 4, the titanium alloy bar to be tested passes through the inside of the deformation detection component 4, and the two ends of the titanium alloy bar to be tested are respectively against the front end stretching mechanism 2 and the rear end fixing mechanism 3, the titanium alloy bar tensile performance testing device is used to detect whether the produced titanium alloy bar can achieve the set tensile performance.

[0029] When the present invention is used, the rear end fixing mechanism 3 is first pulled out from the base plate 1, and then the titanium alloy rod to be tested is passed through the interior of the front end stretching mechanism 2, and is welded and fixed to the welding sleeve 18 on each docking ring 13 on the front end stretching mechanism 2, and the docking ring 13 is locked and connected to each pressure dividing ring 12, and then the rear end fixing mechanism 3 is sleeved on the surface of the titanium alloy rod to be tested, and the titanium alloy rod is fixedly connected to the welding sleeve 18 on the rear end fixing mechanism 3 again, and then the fixing seat 16 is locked, and each pulling sleeve 23 and the pressure module 25 are adjusted so that the position where each welding sleeve 18 is connected to the titanium alloy rod can be evenly stressed, and at the same time, it is also ensured that the two ends of the titanium alloy rod in the initial state are against the pressure module 25, and finally the hydraulic rod 6 is controlled to apply a fixed pulling force. After the force is applied, the deformation detection component 4 in the middle is used to detect whether the surface of the titanium alloy rod is deformed.

[0030] In this embodiment, a connecting column 10 is formed integrally between the first baffle 8 and the second baffle 9, an adjusting knob 17 is inserted in the middle of the second baffle 9, a pressure module 25 is screwed to the end of the adjusting knob 17, and the threaded column 11 passes through the surface of the second baffle 9. A handle 26 is formed integrally at one end of the threaded column 11, and the surface of the threaded column 11 is clamped on both sides of the second baffle 9 through a convex ring. There are two threaded columns 11, and a supporting rod 7 is welded on the surface of the bottom plate 1, and the top of the supporting rod 7 is sleeved on the surface of the connecting column 10 on the front end stretching mechanism 2 through a sleeve ring. The titanium alloy bar to be tested is fixed at both ends by welding, and the welding range is expanded by a multi-layer butt ring 13, so that the two ends of the bar and the fixed structure are more firm and reliable, and the applied tension is more uniform, ensuring that the tension acts more concentratedly on the middle area of ​​the titanium alloy bar.

[0031] Specifically, by pulling the second baffle 9 on the front-end stretching mechanism 2 toward the outer end through the hydraulic rod 6, the titanium alloy rod can be pulled in sequence with the help of the second baffle 9, the connecting column 10, the first baffle 8, the threaded column 11, the pressure divider ring 12 and each docking ring 13 and the docking sleeve, and then the titanium alloy rod is stretched from both ends. Since the threaded column 11 is connected to the docking ring 13 through multiple pressure divider rings 12, and each docking ring 13 is fixedly connected to the titanium alloy rod through the annular welding sleeve 18, the tension applied to the titanium alloy rod can be evenly applied from multiple annular areas, so that the distribution of the tension is more uniform.

[0032] In this embodiment, the surface of the threaded column 11 is sleeved with a pressure dividing ring 12, and the end of the threaded column 11 is sleeved with an end clamping plate 14. The inner side of the pressure dividing ring 12 is embedded with a docking ring 13, and one side of the docking ring 13 is integrally formed with a welding sleeve 18. The edge of the docking ring 13 is provided with an inner screw hole 19. The inner side of the pressure dividing ring 12 is provided with an outer screw hole 22, and the side of the pressure dividing ring 12 is provided with a guide hole 21. The threaded column 11 passes through the inner side of the guide hole 21. The surfaces of the pressure dividing ring 12, the docking ring 13 and the welding sleeve 18 are all engraved with a reference line 20, and the thickness of the pressure dividing ring 12 and the docking ring 13 are the same. The edge of the welding sleeve 18 is welded and fixed to the surface of the titanium alloy bar, and the pressure dividing ring 12 and the docking ring 13 are fixed as a whole after the screws pass through the outer screw hole 22 and the inner screw hole 19 at one time. The surface of the threaded column 11 is also sleeved with a pulling sleeve 23, one side of the pulling sleeve 23 is against the surface of the pressure dividing ring 12, and the side of the end clamping plate 14 is provided with a locking hole 24, and the end of the threaded column 11 is embedded in the locking hole 24. Each docking ring 13 and the pressure dividing ring 12 can be disassembled and assembled, so each time after welding and fixing and testing, only the docking ring 13 needs to be replaced, so that the fixing mechanism part can be reused, reducing the equipment cost, and the disassembly and assembly process is more flexible, and the specific position and range of the tension actually applied to the two ends of the titanium alloy bar can be flexibly controlled.

[0033] Specifically, since each welding sleeve 18 and the docking ring 13 are fixedly connected to the pressure divider ring 12 by screws, after completing the tensile performance test, first remove the screws on each docking ring 13 and the pressure divider ring 12, and at the same time turn the handle 26 to remove the clamping plate 14 at the end of the threaded column 11, and then remove the fixing seat 16 from the base plate 1. Then, all other structures on the rear end fixing mechanism 3 except the docking ring 13 and the welding sleeve 18 can be directly removed from the surface of the titanium alloy rod, and then the titanium alloy rod can be directly removed from the middle of the front end tensile mechanism 2, and finally the removal process of the titanium alloy rod is completed. At this time, only the welding sleeve 18 and the docking ring 13 are consumed, and the pressure divider ring 12 and the connecting mechanisms at both ends can be reused.

[0034] In this embodiment, the surface of the bottom plate 1 is integrally formed with a convex plate 27, the inner side of the convex plate 27 is welded with a guide rail 28, the surface of the guide rail 28 is sleeved with a slide plate 29, the top of the slide plate 29 is integrally formed with a column 30, and the two ends of the deformation detection component 4 are integrally formed with a splicing shell 31. The side of the splicing shell 31 is integrally formed with a splicing plate 33, and the middle of the splicing shell 31 is integrally formed with a detection sleeve 32, and an inner convex ring 36 is attached to the inner wall of the detection sleeve 32, and the inner ring diameter of the inner convex ring 36 is the same as the diameter of the titanium alloy bar to be tested. Sealing rings 37 are attached to the inner walls of the two ends of the splicing shell 31, and the splicing shell 31 is pressed on the surface of the titanium alloy bar through the sealing ring 37. A light strip 34 and a photosensitive module 35 are installed inside the splicing shell 31, and the light strip 34 and the photosensitive module 35 are respectively arranged on both sides of the inner convex ring 36. By installing pressure modules 25 in both the front-end stretching mechanism 2 and the rear-end fixing mechanism 3, it is possible to detect whether there is any displacement change in the fixed positions at both ends. At the same time, after completing the test of applying a fixed tensile force, by moving the middle deformation detection component 4 along the surface of the titanium alloy rod, the specific area where slight deformation actually occurs can be quickly located.

[0035] Specifically, after completing the tensile test, by pulling the column 30, the top splicing shell 31 can be directly driven to move along the surface of the titanium alloy rod. When the surface of the titanium alloy rod undergoes a slight deformation that is difficult to observe with the naked eye after bearing the set tensile force, after pulling the splicing shell 31 to move to the deformation area, the inner convex ring 36 on the inside will no longer be able to fit with the surface of the titanium alloy rod due to the deformation area. At this time, the light beam emitted by the light strip 34 on one side will be reflected into the area of ​​the photosensitive module 35. At this time, the deformation at this position can be detected by the photosensitive module 35. After completing the detection, when the titanium alloy rod needs to be taken out, the screws on the splicing plate 33 can be directly removed to remove the two splicing shells 31.

[0036] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A titanium alloy bar tensile properties testing device, comprising a testing device body, characterized in that: The detection device body comprises a base plate (1), a deformation detection component (4), a front-end stretching mechanism (2) and a rear-end fixing mechanism (3); an end plate (5) is integrally formed at one end of the base plate (1); a hydraulic rod (6) is screwed to the inner side of the end plate (5); the hydraulic rod (6) is screwed to a portion of the front-end stretching mechanism (2) as a whole; the front-end stretching mechanism (2) and the rear-end fixing mechanism (3) both comprise a threaded column (11), a first baffle (8) and a second baffle (9); the central axes of the front-end stretching mechanism (2) and the rear-end fixing mechanism (3) coincide with each other; a column (30) is welded to the bottom end of the deformation detection component (4); and a light strip (34) and a photosensitive module are embedded inside the deformation detection component (4). (35), the titanium alloy bar to be tested passes through the interior of the deformation detection component (4), and the two ends of the titanium alloy bar to be tested are respectively pressed against the front end stretching mechanism (2) and the rear end fixing mechanism (3), a connecting column (10) is integrally formed between the first baffle plate (8) and the second baffle plate (9), an adjusting knob (17) is inserted in the middle of the second baffle plate (9), and a pressure module (25) is screwed to the end of the adjusting knob (17), the threaded column (11) passes through the surface of the second baffle plate (9), a sealing plate (15) is welded to the end of the rear end fixing mechanism (3), a fixing seat (16) is integrally formed at the bottom of the sealing plate (15), and a pressure dividing ring (16) is sleeved on the surface of the threaded column (11). 2), and the end of the threaded column (11) is sleeved with an end clamping plate (14), the inner side of the pressure dividing ring (12) is embedded with a docking ring (13), one side of the docking ring (13) is integrally formed with a welding sleeve (18), the edge of the docking ring (13) is provided with an inner screw hole (19), the interior of the pressure dividing ring (12) is provided with an outer screw hole (22), and the side of the pressure dividing ring (12) is provided with a guide hole (21), the threaded column (11) passes through the inside of the guide hole (21), the surfaces of the pressure dividing ring (12), the docking ring (13) and the welding sleeve (18) are all engraved with a reference line (20), and the pressure dividing ring (12) and the docking ring (13) have the same thickness, and the welding sleeve (18) The edges of the deformation detection components (4) are welded and fixed to the surface of the titanium alloy rod, the two ends of the deformation detection component (4) are integrally formed with a splicing shell (31), the side of the splicing shell (31) is integrally formed with a splicing plate (33), and the middle of the splicing shell (31) is integrally formed with a detection sleeve (32), the inner wall of the detection sleeve (32) is mounted with an inner convex ring (36), the inner ring diameter of the inner convex ring (36) is the same as the diameter of the titanium alloy rod to be tested, sealing rings (37) are mounted on the inner walls of the two ends of the splicing shell (31), and the splicing shell (31) is pressed against the surface of the titanium alloy rod through the sealing ring (37), and a light strip (34) and a photosensitive module (35) are installed inside the splicing shell (31),The light strip (34) and the photosensitive module (35) are respectively arranged on both sides of the inner convex ring (36).

2. The titanium alloy bar tensile properties testing device according to claim 1, characterized in that: A handle (26) is integrally formed at one end of the threaded column (11), and the surface of the threaded column (11) is clamped on both sides of the second baffle (9) via a convex ring. The number of the threaded columns (11) is two, and a support rod (7) is welded to the surface of the bottom plate (1), and the top of the support rod (7) is sleeved on the surface of the connecting column (10) on the front end stretching mechanism (2) via a sleeve.

3. The titanium alloy bar tensile properties testing device according to claim 1, characterized in that: The pressure dividing ring (12) and the docking ring (13) are fixed as a whole by passing screws through the outer screw holes (22) and the inner screw holes (19) at one time.

4. A titanium alloy bar tensile properties testing device according to claim 3, characterized in that: A pulling sleeve (23) is also sleeved on the surface of the threaded column (11), one side of the pulling sleeve (23) rests against the surface of the pressure dividing ring (12), a locking hole (24) is provided on the side of the end clamping plate (14), and the end of the threaded column (11) is embedded in the locking hole (24).

5. The titanium alloy bar tensile properties testing device according to claim 1, characterized in that: A convex plate (27) is integrally formed on the surface of the bottom plate (1), a guide rail (28) is welded on the inner side of the convex plate (27), a slide plate (29) is sleeved on the surface of the guide rail (28), and a column (30) is integrally formed on the top of the slide plate (29).

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