Device for testing removable performance of fluorescent penetrant

Abstract

The utility model discloses a device for testing the removable performance of a fluorescent penetrant, which comprises a rack, a rinsing bath arranged above the rack, a test panel fixing frame arranged in the middle of the rinsing bath and used for clamping a test panel, nozzle brackets parallel to the test panel fixing frame are arranged on two sides of the test panel fixing frame in the rinsing bath, nozzles are mounted on the nozzle brackets, and the nozzles are connected with the rinsing bath. The nozzle faces the test plate fixing frame; a warm water tank and a sewage tank are arranged on the lower portion of the rack, the warm water tank is connected with a water inlet of a pressure pump through a hose, and a water outlet of the pressure pump is connected with a nozzle through a hose. A drain hole is formed in the bottom of the washing tank and connected with a sewage tank through a hose; the device further comprises a controller which is electrically connected with the pressure pump and used for controlling starting and stopping of the pressure pump. The fluorescent penetrant removability test device is used for a fluorescent penetrant removability test, can provide stable and consistent test conditions, avoids the influence of an equipment structure, a test piece surface state and a cleaning condition on a fluorescent penetrant removability test result, ensures the accuracy of the test result, and is high in result reproducibility.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation materials, in particular to a device for testing the removability of fluorescent penetrants. Background Art

[0002] Fluorescent penetrant is an auxiliary chemical used to detect surface defects and microcracks in metal workpieces, ceramics, and non-metallic materials. It is widely used to detect surface defects and microcracks in aircraft high-strength steel, nickel-based alloys, titanium alloys, and cast magnesium alloys.

[0003] When inspecting aircraft parts for surface defects and microcracks, they are first immersed in a fluorescent penetrant to completely wet the surface. The fluorescent penetrant then penetrates the defects or microcracks on the component surface. The fluorescence is then observed under ultraviolet light to confirm the defects or microcracks on the aircraft component. After the inspection, the fluorescent penetrant on the component surface is thoroughly cleaned to prevent prolonged contact with the aircraft component, which could cause corrosion and render the component scrapped. Therefore, a key indicator of the fluorescent penetrant during airworthiness verification is the removability test, which verifies whether the fluorescent penetrant can be completely removed under standard cleaning process conditions. Different cleaning methods and approaches significantly affect the results of the fluorescent penetrant removal test, resulting in poor reproducibility of the test results. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a device for testing the removability of fluorescent penetrants, which provides stable and consistent testing conditions and ensures the accuracy and reproducibility of test results.

[0005] In order to achieve the above technical purpose, the technical solution adopted by this utility model is:

[0006] A device for testing the removability of fluorescent penetrants comprises a frame, a water washing tank is provided above the frame, a test plate fixing frame for clamping a test plate is provided in the middle of the water washing tank, nozzle brackets are provided on both sides of the test plate fixing frame in parallel with the test plate fixing frame in the water washing tank, a nozzle is installed on the nozzle bracket, and the nozzle faces the test plate fixing frame; a warm water tank and a sewage tank are provided at the bottom of the frame, the warm water tank is connected to the water inlet of a pressure pump through a hose, and the water outlet of the pressure pump is connected to the nozzle through a hose; a drainage hole is provided at the bottom of the water washing tank, and the drainage hole is connected to the sewage tank through a hose; and a controller is also included, which is electrically connected to the pressure pump and is used to control the start and stop of the pressure pump.

[0007] Furthermore, a heater and a temperature sensor are provided in the warm water tank, and the heater and the temperature sensor are connected to the controller via electrical signals.

[0008] Furthermore, the controller is provided with a PLC panel and control buttons, the control buttons are used to regulate the start and stop of the pressure pump, and the PLC panel is used to set the water temperature and cleaning time in the warm water tank.

[0009] Furthermore, the water washing tank is made of stainless steel plate, and a mesh plate is installed on the inner wall of the water washing tank.

[0010] Preferably, the model of the nozzle is TG10, and the water spraying volume is 3.8 L per minute under a pressure of 69 kPa.

[0011] Preferably, the test plate fixing frame is made of a stainless steel plate with a thickness of 1.0 mm to 3.0 mm, and two screws and butterfly nuts are installed on the test plate fixing frame to clamp and fix the test plate.

[0012] Furthermore, the distance between the center of the test plate and the nozzle is 305 mm.

[0013] Preferably, the test plate is made of UNS S30200 or UNS S30403 stainless steel plate.

[0014] Preferably, the test plate has a size of 51 mm×152 mm and a thickness of 1.0 mm, and its surface is polished and cleaned with 60-100 mesh quartz sandpaper.

[0015] Preferably, the warm water tank and sewage tank are made of stainless steel plates with a thickness of 2.0 mm and a capacity of 40 L.

[0016] The beneficial effects of the utility model are:

[0017] The device of the utility model is used for the fluorescent penetrant removability performance test, can provide stable and consistent test conditions, avoid the equipment structure, test piece surface state and cleaning conditions affecting the fluorescent penetrant removability test results, and ensure the accuracy of the test results and high reproducibility of the results.

[0018] The device of this utility model optimizes the materials of the water washing tank, warm water tank, and sewage tank, choosing corrosion-resistant stainless steel to prevent corrosion and contamination of the cleaning reagent water in the warm water tank. The device of this utility model also optimizes the nozzle to ensure that the spraying conditions can accurately simulate the actual removal conditions of fluorescent penetrant.

[0019] Obviously, based on the above contents of the present invention, according to common technical knowledge and customary means in this field, various other forms of modifications, replacements or changes can be made without departing from the above basic technical ideas of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a front view of an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 A cross-sectional schematic diagram;

[0023] Figure 3 It is a schematic diagram of the test piece fixing frame and nozzle structure of the utility model.

[0024] Figure numerals: 1-water washing tank, 2-nozzle, 3-pressure pump, 4-specimen fixing frame, 5-warm water tank, 6-sewage tank, 7-test plate, 8-controller, 9-butterfly nut, 10-nozzle bracket. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] A device for testing the removability of fluorescent penetrants, such as Figure 1-Figure 3 As shown, it includes a frame, a water washing tank 1 is provided above the frame, a test plate fixing frame 4 for clamping the test plate 7 is provided in the middle of the water washing tank 1, and nozzle brackets 10 are provided on both sides of the test plate fixing frame 4 in parallel with the test plate fixing frame 4 in the water washing tank 1, and a nozzle 2 is installed on the nozzle bracket 10, and the nozzle 2 faces the test plate fixing frame 4; a warm water tank 5 and a sewage tank 6 are provided at the lower part of the frame, the warm water tank 5 is connected to the water inlet of the pressure pump 3 through a rubber hose, and the water outlet of the pressure pump 3 is connected to the nozzle 2 through a rubber hose; a drainage hole is provided at the bottom of the water washing tank 1, and the drainage hole is connected to the sewage tank 6 through a rubber hose; and a controller 8 is also included, and the controller 8 is electrically connected to the pressure pump 3 for controlling the start and stop of the pressure pump 3.

[0027] Furthermore, a heater and a temperature sensor (not shown) are provided in the warm water tank 5. The heater and the temperature sensor are electrically connected to the controller 8, and the water temperature can be controlled at 21-25°C by the controller 8. The controller 8 is provided with a PLC panel and control buttons. The control buttons are used to control the start and stop of the pressure pump 3, and the PLC panel is used to set the water temperature in the warm water tank 5 and the cleaning time.

[0028] Furthermore, the water washing tank 1 is made of stainless steel plate, and a mesh plate is installed on the inner wall of the water washing tank 1. The aperture of the opening on the mesh plate is 2.0 mm. In a preferred embodiment, the water washing tank 1 is 800 mm long, 450 mm wide, and 300 mm deep.

[0029] Furthermore, the nozzle 2 is of model TG10, and at a pressure of 69 kPa, it sprays 3.8 L of water per minute. The nozzle 2 is connected to the water outlet of the pressure pump 3 using a rubber hose with a diameter of 10 mm. The pressure pump 3 can provide a water flow at a pressure of 172 kPa when operating normally.

[0030] The test plate fixing frame 4 is made of a stainless steel plate with a thickness of 1.0mm to 3.0mm. Preferably, the thickness of the test plate fixing frame 4 is 1.5mm or 2mm. Two screws and butterfly nuts 9 are installed on the test plate fixing frame 4. The test plate 7 can be fixed to the test plate fixing frame 4 by the screws and butterfly nuts 9. The center position of the test plate 7 is 305mm away from the nozzle 2. The test plate 7 is made of a UNS S30200 or UNS S30403 stainless steel plate with a thickness of 1.0mm, with a size of 51mm×152mm and a thickness of 1.0mm. The surface is polished with 60-100 mesh quartz sandpaper and cleaned with anhydrous ethanol. When the test plate is installed, the test plate is placed horizontally, that is, the height direction is 51mm and the width direction is 152mm.

[0031] The warm water tank 5 and the sewage tank 6 are made of a stainless steel plate with a thickness of 2.0 mm and a capacity of 40 L. The warm water tank 5 is connected to the water inlet of the pressure pump 3 using a rubber hose with a diameter of 25 mm.

[0032] Furthermore, universal wheels with brakes are provided at the four corners of the bottom of the frame to facilitate the overall movement of the device.

[0033] When the device of the present invention is used for the removability test of fluorescent penetrant, the test specimen is clamped on the test plate fixing frame by means of a screw and a butterfly nut, the temperature of the reagent water in the warm water tank is set by means of a controller and the heater is turned on for heating, the cleaning time is set, the pressure pump is turned on, and the reagent water in the warm water tank is sprayed through a nozzle at a pressure of 69 kPa onto the test plate fixed on the test plate fixing frame by means of the pressure pump, so as to simulate the cleaning conditions of the fluorescent penetrant. After the cleaning is completed, the residual condition of the fluorescent penetrant on the surface of the test specimen is checked under an ultraviolet lamp with a wavelength of 340 nm, and the removability performance of the fluorescent penetrant is evaluated. The test results are accurate and reliable.

[0034] The device of the utility model is used for fluorescent penetrant removability performance test, which can avoid the influence of equipment structure, test piece surface state and cleaning conditions on fluorescent penetrant removability test results, thereby ensuring the accuracy of test results and high reproducibility of results.

[0035] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A device for testing the removability of fluorescent penetrants, characterized by: The machine comprises a frame, a water washing tank is arranged above the frame, a test plate fixing frame for clamping the test plate is arranged in the middle of the water washing tank, nozzle brackets are arranged on both sides of the test plate fixing frame in parallel with the test plate fixing frame in the water washing tank, a nozzle is installed on the nozzle bracket, and the nozzle is directed towards the test plate fixing frame; a warm water tank and a sewage tank are arranged at the lower part of the frame, the warm water tank is connected to the water inlet of the pressure pump through a hose, and the water outlet of the pressure pump is connected to the nozzle through a hose; a drainage hole is arranged at the bottom of the water washing tank, and the drainage hole is connected to the sewage tank through a hose; and a controller is also included, which is electrically connected to the pressure pump and is used to control the start and stop of the pressure pump.

2. The device for fluorescent penetrant removability test according to claim 1, characterized in that: A heater and a temperature sensor are arranged in the warm water tank, and the heater and the temperature sensor are connected to the controller by electrical signals.

3. The device for fluorescent penetrant removability test according to claim 2, characterized in that: The controller is provided with a PLC panel and control buttons, the control buttons are used to regulate the start and stop of the pressure pump, and the PLC panel is used to set the water temperature and cleaning time in the warm water tank.

4. The device for fluorescent penetrant removability test according to claim 1, characterized in that: The water washing tank is made of stainless steel plate, and a mesh plate is installed on the inner side wall of the water washing tank.

5. The device for fluorescent penetrant removability test according to claim 1, characterized in that: The model of the nozzle is TG10, and the water spraying volume is 3.8L per minute under a pressure of 69kPa.

6. The device for fluorescent penetrant removability test according to claim 1, characterized in that: The test plate fixing frame is made of a stainless steel plate with a thickness of 1.0 mm to 3.0 mm. Two screws and butterfly nuts are installed on the test plate fixing frame to clamp and fix the test plate.

7. The device for fluorescent penetrant removability test according to claim 6, characterized in that: The distance between the center of the test plate and the nozzle is 305 mm.

8. The device for fluorescent penetrant removability test according to claim 1, characterized in that: The test panels are made of UNS S30200 or UNS S30403 stainless steel plates.

9. The device for fluorescent penetrant removability test according to claim 8, characterized in that: The test plate has a size of 51 mm×152 mm and a thickness of 1.0 mm, and its surface is polished and cleaned with 60-100 mesh quartz sandpaper.

10. The device for fluorescent penetrant removability test according to claim 1, characterized in that: The warm water tank and sewage tank are made of stainless steel plates with a thickness of 2.0 mm and a capacity of 40 L.

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