Semi-automatic ultrasonic water immersion detection system and method for titanium and titanium alloy hexagonal rods

Abstract

The invention discloses a titanium and titanium alloy hexagonal rod semi-automatic ultrasonic water immersion detection system which comprises a detection platform, and a front vertical clamping device, a front horizontal clamping device, an ultrasonic detection box body, a rear horizontal clamping device and a rear vertical clamping device are sequentially arranged on the detection platform in the horizontal direction. The side edge, close to the front vertical clamping device, of the detection platform is connected with a feeding roller way, the side edge, close to the rear vertical clamping device, of the detection platform is connected with a discharging roller way, a probe is connected into the ultrasonic detection box body, and the side edge of the detection platform is further connected with a water tank. The front vertical clamping device, the front horizontal clamping device, the rear horizontal clamping device and the rear vertical clamping device are all connected with servo motors, and the multiple servo motors are jointly connected with a motion control system. The invention further discloses a detection method. The titanium and titanium alloy hexagonal rod semi-automatic ultrasonic water immersion detection system and the titanium and titanium alloy hexagonal rod semi-automatic ultrasonic water immersion detection method solve the problem in the prior art that detection can be carried out only by manually turning over the surface in the acoustic water immersion detection.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrasonic water immersion detection, relates to a semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars, and also relates to a detection method for titanium alloy hexagonal bars. Background Art

[0002] Ultrasonic testing is a non-destructive testing method that uses ultrasonic waves to detect and measure targets. Titanium and titanium alloy hexagonal bars are mainly used in the production of aerospace fasteners. The quality of hexagonal bar materials is a prerequisite for ensuring the safety of aerospace vehicles. Water immersion ultrasonic testing is a testing method that uses water as a coupling agent. It has the advantages of small detection blind area and no probe wear and is widely used in product testing. Ultrasonic water immersion testing technology is widely used in hexagonal bar quality control as the main testing method in the non-destructive testing industry. At present, the hexagonal bar testing mainly adopts ultrasonic water immersion manual testing on one side, and the product testing is completed after six flips. Manual testing has the problems of poor stability of test results, low test efficiency, and no test records. Summary of the invention

[0003] The first purpose of the present invention is to provide a semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars, which solves the problem that the ultrasonic water immersion detection in the prior art requires manual turning over before detection.

[0004] A second object of the present invention is to provide a method for detecting a titanium alloy hexagonal rod.

[0005] The first technical solution adopted by the present invention is a semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars. The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars includes a detection platform. A front vertical clamping device, a front horizontal clamping device, an ultrasonic detection box, a rear horizontal clamping device and a rear vertical clamping device are sequentially arranged in the horizontal direction on the upper edge of the detection platform. A loading roller is connected to the side of the detection platform close to the front vertical clamping device, and a unloading roller is connected to the side of the detection platform close to the rear vertical clamping device. An ultrasonic water immersion probe and guide device are arranged in the ultrasonic detection box. A water tank is also connected to the side of the detection platform. The front vertical clamping device, the front horizontal clamping device, the rear horizontal clamping device and the rear vertical clamping device are all connected to servo motors, and multiple servo motors are commonly connected to a motion control system.

[0006] The first technical solution of the present invention is also characterized in that: The front vertical clamping device and the rear vertical clamping device both include a lead screw, a first rubber-coated flat roller and a second rubber-coated flat roller. The lead screw passes through the first rubber-coated flat roller and the second rubber-coated flat roller and is connected with positive and negative screw nuts. The other end of the lead screw is connected with a first hand wheel. The first rubber-coated flat roller or the second rubber-coated flat roller is connected to the servo motor through a transmission shaft.

[0007] The front horizontal clamping device and the rear horizontal clamping device both include a lead screw, a first base plate and a second base plate, the lead screw passes through the first base plate and is connected to the second base plate with positive and negative screw nuts, and the other end of the lead screw is connected to a second hand wheel; The servo motor is connected with a first groove profiling roller and a second groove profiling roller through a transmission shaft penetrating the first bottom plate, and a third groove profiling roller and a fourth groove profiling roller are connected on the second bottom plate through a mounting shaft.

[0008] The first groove profiling roller, the second groove profiling roller, the third groove profiling roller and the fourth groove profiling roller are all V-grooved, and the groove angles of the first groove profiling roller, the second groove profiling roller, the third groove profiling roller and the fourth groove profiling roller are all 60°.

[0009] The ultrasonic detection box is provided with a coupling water inlet hole and a coupling water outlet hole, and a flange is connected inside the ultrasonic detection box. A plurality of probe adjusters are evenly arranged along the circumferential direction of the flange, and each probe adjuster has the same axial interval. Guide devices are respectively arranged at the coupling water inlet hole and the coupling water outlet hole, and guide devices are also respectively installed between every two probe adjusters.

[0010] The flange is provided with probe adjusters at intervals of 60° along the circumferential direction, and the axial interval of each probe adjuster is 50 mm.

[0011] The probe adjuster comprises a circumferential adjusting device, which is connected to a probe water distance adjusting device via an adjusting shaft, which is connected to a probe holder, an ultrasonic immersion probe is installed on the probe holder, and the ultrasonic immersion probe is connected to a channel ultrasonic board.

[0012] The channel ultrasonic board and the motion control system are connected to an industrial control computer, and the industrial control computer is connected to a display system.

[0013] The second technical solution adopted by the present invention is a method for detecting titanium alloy hexagonal bars, using a semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars, specifically: 7mm~12mm titanium and titanium alloy hexagonal bars are sent into the front vertical clamping device through a loading roller, the front vertical clamping device guides the vertical direction and uses a servo motor to provide power to send the hexagonal bar into the front horizontal clamping device, the front horizontal clamping device uses a servo motor to provide power to send the clamped hexagonal bar into the ultrasonic detection box through a guide device, after the inspection, the hexagonal bar enters the rear horizontal clamping device through the guide device, the rear horizontal clamping device sends the hexagonal bar into the rear vertical clamping device, and finally the hexagonal bar is sent out through the unloading roller to complete the bar inspection.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The semi-automatic ultrasonic water immersion testing system for titanium and titanium alloy hexagonal bars of the present invention realizes automatic transmission of bars during hexagonal bar testing, clamps and feeds the hexagonal bars into the testing chamber, and completes the ultrasonic water immersion testing of the hexagonal bars at one time. The testing efficiency of the tested hexagonal bars is high, the testing speed is stable and controllable, the system stability is good, and the replacement of hexagonal bars of different specifications is convenient and suitable for semi-automatic ultrasonic water immersion testing of hexagonal bars of different specifications.

[0015] (2) The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars of the present invention has front and rear conveying rollers and a horizontal clamping device to realize automatic feeding of the bars. The system uses a high-precision encoder to reduce position / speed measurement errors. The motion control uses closed-loop control to dynamically adjust the drive signal. At the same time, noise filtering technology is implemented to reduce signal disturbances, ensuring that the control accuracy of the hexagonal bar feeding speed is within 5% of the set speed.

[0016] (3) In the titanium and titanium alloy hexagonal rod semi-automatic ultrasonic water immersion detection system of the present invention, the 60° V-groove profiling roller realizes the horizontal positioning of the hexagonal rod, ensuring that it can smoothly enter the detection cavity.

[0017] (4) The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars of the present invention, the probe adjuster and the probe mounting device realize the installation of the probe through the set screws and knobs, and the adjustment of the water distance and angle of the probe ensures the smooth detection of defects on the detection surface and corners of the hexagonal bar. The water distance adjustment accuracy is 1mm, and the probe group angle adjustment accuracy is 0.5 degrees.

[0018] (5) The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal rods of the present invention adopts a high-frequency broadband narrow pulse water immersion line focusing probe with a composite chip, which can detect defects with a diameter of 0.8 mm on hexagonal rods with a size of 7 mm to 12 mm. It has high resolution and signal-to-noise ratio and can identify defects with an equivalent size of 0.8 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the ultrasonic semi-automatic detection system of the present invention; Figure 2 It is a structural schematic diagram of the vertical clamping device of the present invention; Figure 3 It is a structural schematic diagram of the horizontal clamping device of the present invention; Figure 4 It is a schematic diagram of the installation of the probe adjuster of the present invention; Figure 5 It is an axial schematic diagram of the ultrasonic detection box of the present invention; Figure 6 It is a structural schematic diagram of the probe adjuster of the present invention; Figure 7It is a schematic diagram of the structure of an 8-channel ultrasonic board card used in Example 5 of the present invention.

[0020] In the figure, 1. feeding roller, 2. front vertical clamping device, 3. front horizontal clamping device, 4. ultrasonic detection box, 5. rear horizontal clamping device, 6. rear vertical clamping device, 7. unloading roller, 8. detection platform, 9. water tank, 10. first rubber-coated flat roller, 11. second rubber-coated flat roller, 12. first hand wheel, 13. first groove profiling roller, 14. second groove profiling roller, 15. third groove profiling roller, 16. fourth groove profiling roller, 17. second hand wheel, 18. first bottom plate, 19. second bottom plate, 20. probe adjuster, 21. guide device, 22. coupling water inlet hole, 23 coupling water outlet hole, 24. circumferential adjustment device, 25. probe water distance adjustment device, 26. probe clamp. DETAILED DESCRIPTION

[0021] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0022] Example 1 This embodiment provides a semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars, such as Figure 1 As shown, it includes a detection platform 8, on which a front vertical clamping device 2, a front horizontal clamping device 3, an ultrasonic detection box 4, a rear horizontal clamping device 5 and a rear vertical clamping device 6 are sequentially arranged in the horizontal direction, the side of the detection platform 8 close to the front vertical clamping device 2 is connected with a loading roller 1, the side of the detection platform 8 close to the rear vertical clamping device 6 is connected with a unloading roller 7, an ultrasonic immersion probe and a guide device 21 are inside the ultrasonic detection box 4, and the side of the detection platform 8 is also connected with a water tank 9, the front vertical clamping device 2, the front horizontal clamping device 3, the rear horizontal clamping device 5 and the rear vertical clamping device 6 are all connected with servo motors, and the multiple servo motors are commonly connected with a motion control system.

[0023] Example 2 This embodiment provides a semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars, such as Figure 1 As shown, it includes a detection platform 8, on which a front vertical clamping device 2, a front horizontal clamping device 3, an ultrasonic detection box 4, a rear horizontal clamping device 5 and a rear vertical clamping device 6 are sequentially arranged in the horizontal direction, the side of the detection platform 8 close to the front vertical clamping device 2 is connected with a loading roller 1, the side of the detection platform 8 close to the rear vertical clamping device 6 is connected with a unloading roller 7, an ultrasonic water immersion probe and a guide device 21 are arranged in the ultrasonic detection box 4, and a water tank 9 is also connected to the side of the detection platform 8, the front vertical clamping device 2, the front horizontal clamping device 3, the rear horizontal clamping device 5 and the rear vertical clamping device 6 are all connected with servo motors, and the multiple servo motors are commonly connected with a motion control system.

[0024] like Figure 2 As shown, the two sets of vertical clamping devices are respectively located outside the two sets of horizontal clamping devices. The front vertical clamping device 2 and the rear vertical clamping device 6 are both composed of a first rubber-coated flat roller 10 and a second rubber-coated flat roller 11 with a diameter of 50 mm, and also include a lead screw. The first rubber-coated flat roller 10 and the second rubber-coated flat roller 11 are connected to a lead screw through positive and negative screw nuts. The other end of the lead screw is connected to a first hand wheel 12. The first rubber-coated flat roller or the second rubber-coated flat roller is connected to the servo motor through a transmission shaft. The distance between the first rubber-coated flat roller 10 and the second rubber-coated flat roller 11 is adjusted by adjusting the hand wheel 12 connected to the lead screw.

[0025] Example 3 This embodiment provides a semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars, such as Figure 1 As shown, it includes a detection platform 8, on which a front vertical clamping device 2, a front horizontal clamping device 3, an ultrasonic detection box 4, a rear horizontal clamping device 5 and a rear vertical clamping device 6 are sequentially arranged in the horizontal direction, the side of the detection platform 8 close to the front vertical clamping device 2 is connected with a loading roller 1, the side of the detection platform 8 close to the rear vertical clamping device 6 is connected with a unloading roller 7, an ultrasonic water immersion probe and a guide device 21 are arranged in the ultrasonic detection box 4, and a water tank 9 is also connected to the side of the detection platform 8, the front vertical clamping device 2, the front horizontal clamping device 3, the rear horizontal clamping device 5 and the rear vertical clamping device 6 are all connected with servo motors, and the multiple servo motors are commonly connected with a motion control system.

[0026] like Figure 2 As shown, the two sets of vertical clamping devices are respectively located outside the two sets of horizontal clamping devices. The front vertical clamping device 2 and the rear vertical clamping device 6 are both composed of a first rubber-coated flat roller 10 and a second rubber-coated flat roller 11 with a diameter of 50 mm, and also include a lead screw. The first rubber-coated flat roller 10 and the second rubber-coated flat roller 11 are connected to a lead screw through positive and negative screw nuts. The other end of the lead screw is connected to a first hand wheel 12. The first rubber-coated flat roller or the second rubber-coated flat roller is connected to the servo motor through a transmission shaft. The distance between the first rubber-coated flat roller 10 and the second rubber-coated flat roller 11 is adjusted by adjusting the hand wheel 12 connected to the lead screw.

[0027] like Figure 3As shown, the front horizontal clamping device 3 and the rear horizontal clamping device 5 are located on the detection platform and outside the ultrasonic detection box 4. The front horizontal clamping device 3 and the rear horizontal clamping device 5 both include a lead screw, a first bottom plate 18 and a second bottom plate 19, the lead screw passes through the first bottom plate 18 and the second bottom plate 19 and is connected with a positive and negative screw nut, and the other end of the lead screw is connected with a second hand wheel 17; it also includes a servo motor, wherein the front horizontal clamping device 3 and the rear horizontal clamping device 5 both include two pairs of 60° V-groove profiling rollers, the first groove profiling roller 13 and the second groove profiling roller 14 are connected to the lower end servo motor through a transmission shaft, and the motor is located below the first bottom plate 18 and is connected to the lower end servo motor through a reduction The speed machine and the synchronous toothed belt provide power for the first groove profiling roller 13 and the second groove profiling roller 14. The mounting shafts of the third groove profiling roller 15 and the fourth groove profiling roller 16 are mounted on the second bottom plate 19 through the bearing seat. The first bottom plate 18 and the second bottom plate 19 are mounted on the positive and negative nuts of the adjusting screw. The distance between the third groove profiling roller 15 and the fourth groove profiling roller 16 is adjusted by adjusting the distance between the first bottom plate 18 and the second bottom plate 19, so as to provide power for the detection of hexagonal bars suitable for the clamping of different specifications.

[0028] Example 4 This embodiment provides a semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars, such as Figure 1 As shown, it includes a detection platform 8, on which a front vertical clamping device 2, a front horizontal clamping device 3, an ultrasonic detection box 4, a rear horizontal clamping device 5 and a rear vertical clamping device 6 are sequentially arranged in the horizontal direction, the side of the detection platform 8 close to the front vertical clamping device 2 is connected with a loading roller 1, the side of the detection platform 8 close to the rear vertical clamping device 6 is connected with a unloading roller 7, an ultrasonic water immersion probe and a guide device 21 are arranged in the ultrasonic detection box 4, and a water tank 9 is also connected to the side of the detection platform 8, the front vertical clamping device 2, the front horizontal clamping device 3, the rear horizontal clamping device 5 and the rear vertical clamping device 6 are all connected with servo motors, and the multiple servo motors are commonly connected with a motion control system.

[0029] like Figure 2 As shown, the two sets of vertical clamping devices are respectively located outside the two sets of horizontal clamping devices. The front vertical clamping device 2 and the rear vertical clamping device 6 are both composed of a first rubber-coated flat roller 10 and a second rubber-coated flat roller 11 with a diameter of 50 mm, and also include a lead screw. The first rubber-coated flat roller 10 and the second rubber-coated flat roller 11 are connected to a lead screw through positive and negative screw nuts. The other end of the lead screw is connected to a first hand wheel 12. The first rubber-coated flat roller or the second rubber-coated flat roller is connected to the servo motor through a transmission shaft. The distance between the first rubber-coated flat roller 10 and the second rubber-coated flat roller 11 is adjusted by adjusting the hand wheel 12 connected to the lead screw.

[0030] like Figure 3As shown, the front horizontal clamping device 3 and the rear horizontal clamping device 5 are located on the detection platform and outside the ultrasonic detection box 4. The front horizontal clamping device 3 and the rear horizontal clamping device 5 both include a lead screw, a first bottom plate 18 and a second bottom plate 19, the lead screw passes through the first bottom plate 18 and the second bottom plate 19 and is connected with a positive and negative screw nut, and the other end of the lead screw is connected with a second hand wheel 17; it also includes a servo motor, wherein the front horizontal clamping device 3 and the rear horizontal clamping device 5 both include two pairs of 60° V-groove profiling rollers, the first groove profiling roller 13 and the second groove profiling roller 14 are connected to the lower end servo motor through a transmission shaft, and the motor is located below the first bottom plate 18 and is connected to the lower end servo motor through a reduction The speed machine and the synchronous toothed belt provide power for the first groove profiling roller 13 and the second groove profiling roller 14. The mounting shafts of the third groove profiling roller 15 and the fourth groove profiling roller 16 are mounted on the second bottom plate 19 through the bearing seat. The first bottom plate 18 and the second bottom plate 19 are mounted on the positive and negative nuts of the adjusting screw. The distance between the third groove profiling roller 15 and the fourth groove profiling roller 16 is adjusted by adjusting the distance between the first bottom plate 18 and the second bottom plate 19, so as to provide power for the detection of hexagonal bars suitable for the clamping of different specifications.

[0031] like Figure 4-6 As shown, the ultrasonic detection box 4 has an inlet and an outlet, and a flange is connected to the ultrasonic detection box 4. The flange is evenly provided with multiple probe adjusters 20 along the circumferential direction, and the axial spacing of the multiple probe adjusters 20 is the same. The ultrasonic detection box 4 is provided with guide devices 21 at the coupling water inlet hole 22 and the coupling water outlet hole 23, respectively. The guide device 21 is installed between every two probe adjusters 20. The flange is provided with probe adjusters 20 at intervals of 60° along the circumferential direction, and the axial spacing of each probe adjuster 20 is 50mm. Figure 5 As shown, the probe adjuster 20 includes a circumferential adjustment device 24, which is connected to a probe water distance adjustment device 25 through an adjustment shaft, and the probe water distance adjustment device 25 is connected to a probe holder 26. An ultrasonic water immersion probe is installed on the probe holder 26. The six probe adjusters are divided into two groups of three in each group. The two groups of devices have a circumferential angle of 60° to ensure that the six detection surfaces of the hexagonal rod are covered and there is no interference between the ultrasonic channels. The probe holder 26 is located at the end of the probe adjuster for fixing the probe. The fine-tuning knob located at the top of the probe adjuster is adjusted to realize the movement of the probe in the Z-axis direction, and the distance between the probe and the incident surface of the rod is changed to adapt to the water distance of the hexagonal rods of different specifications. The circumferential adjustment device is designed with a knob, and the angle between the center line of each probe of the probe clamping group and the incident surface of the hexagonal rod can be adjusted by adjusting the knob to adjust the incident angle of the ultrasonic beam emitted by the probe on the surface of the hexagonal rod to be tested. The guide device 21 is located at the inlet and outlet of the ultrasonic detection box and between the two sets of probes. Its shape is the same as that of the hexagonal rod and its size is 0.02mm larger than the nominal size of the rod. The water tank 9 is located at the rear of the ultrasonic detection box 4 and has a volume of 1.5m 3A 1.5KW water pump is used as the power for coupling circulating water. The coupling water enters the cavity through the coupling water inlet hole 22 with a diameter of 25mm at the lower rear side of the ultrasonic detection box 4. The coupling water outlet hole 23 is located above the rear side of the ultrasonic detection box 4 and is 50mm higher than the upper probe to ensure that there is enough coupling water in the cavity.

[0032] It also includes an industrial control computer, an ultrasonic board, and an ultrasonic water immersion probe. The industrial control computer is connected to the ultrasonic board and the motion control system synchronization system. The ultrasonic board is connected to the ultrasonic water immersion probe, and ultrasonic pulse signals are sent to the water immersion probe and echo signals of the water immersion probe are received through the probe line. The motion control system synchronization system controls the servo motors of the loading roller 1, the front horizontal clamping device 3, the rear horizontal clamping device 5, and the unloading roller 7 to move, and the ultrasonic water immersion probe is installed on the probe adjuster 20.

[0033] Example 5 This embodiment provides a method for detecting titanium alloy hexagonal bars, using the titanium and titanium alloy hexagonal bar semi-automatic ultrasonic water immersion detection system provided in the above embodiment, specifically: Place 7mm~12mm titanium and titanium alloy hexagonal bars on the feeding roller 1. The servo motor of the feeding roller provides power to send the hexagonal bars into the front vertical clamping device 2. The front vertical clamping device 2 guides the hexagonal bars in the vertical direction and provides power through the servo motor to send the hexagonal bars into the front horizontal clamping device 3. The front horizontal clamping device 3 provides power through the servo motor and uses the friction between the roller and the hexagonal bar to send the clamped hexagonal bars into the ultrasonic detection box 4 through the guide device 21. After the detection, the hexagonal bars enter the rear horizontal clamping device 5 through the guide device 21. The first groove profiling roller 13 and the second groove profiling roller 14 of the flat clamping device 5 provide power to clamp the rod into the rear vertical clamping device 6. The servo motor provides power to send the hexagonal rod in the rear vertical clamping device 6 into the unloading roller 7. The material is manually removed to complete the rod inspection. Before the hexagonal rod enters the rear horizontal clamping device 5, it is powered by the loading roller 1, the front vertical clamping device 2 and the front horizontal clamping device 3. After the hexagonal rod leaves the front horizontal clamping device 3, the rear horizontal clamping device 5, the rear vertical clamping device and the unloading roller 7 provide the hexagonal rod with forward power.

[0034] Among them, the first hand wheel 12 of the front vertical clamping device 2 is adjusted according to the specifications of the titanium and titanium alloy hexagonal bars, and the distance between the first rubber-coated flat roller 10 and the second rubber-coated flat roller 11 is adjusted to make the center of the hexagonal bar and the center of the groove profiling roller of the front horizontal clamping device 3 consistent in height; the second hand wheel 17 in the front horizontal clamping device 3 is adjusted to adjust the distance between the third groove profiling roller 15 and the first groove profiling roller 13, the second groove profiling roller 14 and the fourth groove profiling roller 16 to ensure that the center of the hexagonal bar is concentric with the guide device 21; the probe water distance and other parameters are adjusted according to the detection process; the hand wheel of the rear vertical clamping device 6 is adjusted, and the distance between the rubber-coated flat roller and the center of the hexagonal bar is adjusted to make the center of the groove profiling roller consistent in height with the front horizontal clamping device 6.

[0035] like Figure 7 As shown, the detection instrument in this embodiment adopts an 8-channel ultrasonic board with a maximum sampling frequency of 100MHz for a single channel, and also adopts GE's Alpha series ultrasonic water immersion line focusing probe. The 1#Alpha series probe and GE's 2#GAMMA series probe used in this embodiment are tested for main parameters in accordance with EN12668-2:2010 "Non-destructive testing - Characterization and verification of ultrasonic testing equipment - Part 2: Probes". The test results are shown in Table 1.

[0036] Table 1 Main parameters test table of ultrasonic water immersion line focusing probe

[0037] Through the analysis of the test data of the two series of probes, it is found that the bandwidth of the Alpha series probe is 57%, which is 19.3% wider than that of the GAMMA series probe (37.7). The pulse width of the Alpha series probe is 496ns, which is smaller than that of the GAMMA series probe (600ns). Compared with the GAMMA series, the Alpha series immersion probe has the characteristics of large bandwidth and narrow pulse, good near-surface resolution and small surface blind area, which is conducive to discovering small near-surface defects and is suitable for precision measurement.

[0038] The large pulse width of the probe will lead to a larger surface blind area. This embodiment mainly inspects titanium and titanium alloy hexagonal bars with a size of 7mm~12mm. It is particularly important for near-surface defect detection and near-surface resolution. The Alpha series water immersion line focusing probe can clearly distinguish between 0.8mm defect waves and bottom surface echoes, while the GAMMA series water immersion line focusing probe cannot distinguish between 0.8mm defect waves and bottom surface echoes. The Alpha series water immersion line focusing probe used in this embodiment has the characteristics of small pulse width, good near-surface resolution, strong ability to discover new small defects, and small surface blind area, which is more suitable for semi-automatic ultrasonic water immersion detection of titanium and titanium alloy hexagonal bars.

Claims

1. Titanium and titanium alloy hexagonal rod semi-automatic ultrasonic water immersion detection system, characterized in that: The invention comprises a detection platform (8), wherein a front vertical clamping device (2), a front horizontal clamping device (3), an ultrasonic detection box (4), a rear horizontal clamping device (5) and a rear vertical clamping device (6) are sequentially arranged on the detection platform (8) in the horizontal direction; a loading roller (1) is connected to the side of the detection platform (8) close to the front vertical clamping device (2); a unloading roller (7) is connected to the side of the detection platform (8) close to the rear vertical clamping device (6); an ultrasonic water immersion probe and a guide device (21) are arranged in the ultrasonic detection box (4); a water tank (9) is also connected to the side of the detection platform (8); the front vertical clamping device (2), the front horizontal clamping device (3), the rear horizontal clamping device (5) and the rear vertical clamping device (6) are all connected to servo motors; and a plurality of the servo motors are commonly connected to a motion control system.

2. The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars according to claim 1 is characterized in that: The front vertical clamping device (2) and the rear vertical clamping device (6) both comprise a lead screw, a first rubber-coated flat roller (10) and a second rubber-coated flat roller (11); the lead screw passes through the first rubber-coated flat roller (10) and the second rubber-coated flat roller (11) and is connected to positive and negative screw nuts; the other end of the lead screw is connected to a first hand wheel (12); the first rubber-coated flat roller (10) or the second rubber-coated flat roller (11) is connected to a servo motor via a transmission shaft.

3. The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars according to claim 1 is characterized in that: The front horizontal clamping device (3) and the rear horizontal clamping device (5) both comprise a lead screw, a first base plate (18) and a second base plate (19); the lead screw passes through the first base plate (18) and the second base plate (19) and is connected to positive and negative screw nuts; the other end of the lead screw is connected to a second hand wheel (17); the servo motor passes through the first base plate (18) via a transmission shaft and is connected to a first groove profiling roller (13) and a second groove profiling roller (14); the second base plate (19) is connected to a third groove profiling roller (15) and a fourth groove profiling roller (16) via a mounting shaft.

4. The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars according to claim 3 is characterized in that: The first groove profiling roller (13), the second groove profiling roller (14), the third groove profiling roller (15) and the fourth groove profiling roller (16) are all V-grooves, and the groove angles of the first groove profiling roller (13), the second groove profiling roller (14), the third groove profiling roller (15) and the fourth groove profiling roller (16) are all 60 degrees.

5. The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars according to claim 1 is characterized in that: The ultrasonic detection box (4) is provided with a coupling water inlet hole (22) and a coupling water outlet hole (23); a flange is connected inside the ultrasonic detection box (4); a plurality of probe adjusters (20) are evenly arranged on the flange along a circumferential direction; each of the probe adjusters (20) is spaced at the same axial distance; guide devices (21) are respectively arranged at the coupling water inlet hole (22) and the coupling water outlet hole (23); and a guide device (21) is also respectively installed between every two of the probe adjusters (20).

6. The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars according to claim 5 is characterized in that: The flange is provided with probe adjusters (20) at intervals of 60° along the circumferential direction, and the axial interval between each probe adjuster (20) is 50 mm.

7. The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars according to claim 5 is characterized in that: The probe adjuster comprises a circumferential adjustment device (24), the circumferential adjustment device (24) being connected to a probe water distance adjustment device (25) via an adjustment shaft, the probe water distance adjustment device (25) being connected to a probe holder (26), an ultrasonic water immersion probe being mounted on the probe holder (26), and the ultrasonic water immersion probe being connected to an ultrasonic board.

8. The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars according to claim 7 is characterized in that: The ultrasonic board and the motion control system are connected to an industrial control computer, and the industrial control computer is connected to a display system.

9. Titanium alloy hexagonal rod detection method, characterized in that: The semi-automatic ultrasonic water immersion detection system for titanium and titanium alloy hexagonal bars as described in any of claims 1 to 7 is used, specifically: 7mm~12mm titanium and titanium alloy hexagonal bars are sent into the front vertical clamping device (2) through the feeding roller (1); the front vertical clamping device (2) guides the hexagonal bars in the vertical direction and provides power through the servo motor to send the hexagonal bars into the front horizontal clamping device (3); the front horizontal clamping device (3) provides power through the servo motor to send the clamped hexagonal bars into the ultrasonic detection box (4) through the guide device (21); after the detection, the hexagonal bars enter the rear horizontal clamping device (5) through the guide device (21); the rear horizontal clamping device (5) sends the hexagonal bars into the rear vertical clamping device (6); finally, the hexagonal bars are sent out through the unloading roller (7) to complete the bar detection.

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