Method for detecting micro-deformation on surface of aluminum plate

Abstract

The present application relates to a kind of detection methods of the surface micro-deformation of aluminum plate, comprising the following steps: (1) making a hand polishing device, a polishing workbench, a group of shadowless light source: (2) the sample to be detected is placed on the polishing workbench, and the same position is polished 3 times along the arc on the surface of sample using hand polishing device, the surface is bright after polishing, and gradually moves polishing position, covers the entire sample surface;(3) check the sample surface under the shadowless light source, if the surface is locally high or color shade is dark, it is a defect;(4) after polishing and checking one side, turn over the sample and repeat polishing and checking according to the requirements of step (2) and step (3). It is helpful to convert deformation into color difference, so that the defect can be detected by naked eye.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of detection methods of the surface micro deformation of aluminum plate. BACKGROUND

[0002] After aluminum plate is made, it is usually necessary to detect defects (protrusions or depressions) to avoid defects, and the surface of the aluminum plate has been inspected by relying on naked eyes or surface detection system, and the slight deformation (protrusions or depressions) of the surface of the strip is difficult to be found by naked eyes. Therefore, a method for detecting the micro deformation of the surface of the aluminum plate is needed. SUMMARY

[0003] The purpose of the present application is to provide a kind of detection methods of the surface micro deformation of aluminum plate, which helps to convert deformation into color difference, so that defects can be detected by naked eyes.

[0004] The technical scheme of the present application is that a kind of detection methods of the surface micro deformation of aluminum plate, comprising the following steps:

[0005] (1) make a hand polishing device, a polishing workbench and a group of shadowless light sources:

[0006] The hand polishing device includes a fixed plate provided with a handle on the upper side, the bottom surface of the fixed plate is connected with a sponge layer, the lower side of the sponge layer is provided with a bottom plate, the bottom plate is covered with a sand net on the lower side, and the two ends of the sand net are bent upward and connected with a clamping device provided on the upper side of the fixed plate;

[0007] The polishing workbench is provided with a layer of high-foaming material panel on the plane;

[0008] The shadowless light source is composed of a plurality of wide-body bracket integrated lamps and is arranged above the polishing workbench, and the distance between the shadowless light source and the upper surface of the polishing workbench is more than 1000 mm;

[0009] (2) place the sample to be detected on the polishing workbench, polish the sample surface at the same position along the arc for 3 times by hand, and the surface is bright after polishing, and gradually move the polishing position to cover the entire sample surface;

[0010] (3) inspect the sample surface under the shadowless light source, if the surface is locally bright or the color is dark, it is a defect;

[0011] (4) after one side is polished and inspected, turn over the sample and repeat the polishing and inspection according to the requirements of steps (2) and (3).

[0012] Further, the fixed plate is a stainless steel sheet with a layer of foam plate adhered to the bottom surface, the handle is fixed to the upper side of the stainless steel sheet, and the bottom plate is a foam plate; or the fixed plate and the bottom plate are both foam plates.

[0013] Further, the two side portions of the fixed plate are provided with a counterbore from bottom to top through the fixed plate, and the counterbore is provided with a locking bolt fixedly connected with the handle end portion.

[0014] Further, the clamping device comprises a fixed clamp arranged on the upper end face of the fixed plate, and the end portion of the sand net is connected with the fixed clamp.

[0015] Further, the thickness of the fixed plate is 2-4 mm; the thickness of the sponge layer is 15-25 mm; and the thickness of the bottom plate is 2-4 mm.

[0016] Further, the sand net is a 500-mesh sand net.

[0017] Further, the planar height of the polishing workbench is 900 mm, and the planar specification is 2500 mm in width * 4000 mm in length.

[0018] Further, the thickness of the high-foaming material panel is 10-20 mm.

[0019] Further, the shadowless light source is composed of 13 wide-body support integrated lamps, wherein 5 wide-body support integrated lamps arranged in a longitudinal direction are arranged on the upper two sides of the polishing workbench in a transverse direction, and the wide-body support integrated lamps on the upper two sides of the polishing workbench are arranged symmetrically; and 3 wide-body support integrated lamps arranged in a transverse direction are arranged on the upper middle portion of the polishing workbench in a transverse direction.

[0020] Further, the distance between the wide-body support integrated lamp and the upper surface of the polishing workbench is 1100 mm.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] 1. Through the detection method, the deformation is converted into color difference, so that the defects can be detected by the naked eye.

[0023] 2. The manual polishing device with a handle facilitates polishing operation, and the rectangular sand net is beneficial to fully utilize the sand net material, reduce the loss and procurement cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a structural schematic view of the manual polishing device of the present application;

[0025] Fig. 2 It is a sectional view of one embodiment of the manual polishing device of the present application;

[0026] Fig. 3 It is a schematic view of the shadowless light source arrangement of the present application.

[0027] In the figure: 1-polishing platform 2-wide body support integrated lamp 10-fixed plate 11-stainless steel sheet 12-foam plate 13-locking bolt 20-sponge layer 30-bottom plate 40-sand net 50-handle 60-fixing clamp. DETAILED DESCRIPTION

[0028] In order to make the above features and advantages of the present application more apparent, the following specific examples are given, and the detailed description is made below with reference to the accompanying drawings, but the present application is not limited thereto.

[0029] Reference Figs. 1 to 3

[0030] A kind of aluminum plate surface micro deformation detection method, comprising the following steps:

[0031] (1) make a hand polishing device, a polishing workbench, a group of shadowless light source:

[0032] (2) the sample to be detected is placed on the polishing workbench, and the hand polishing device is polished 3 times in the same position on the sample surface along the arc, the surface is bright after polishing, and the polishing position is gradually moved to cover the entire sample surface;

[0033] (3) check the sample surface under the shadowless light source, if the surface is locally high or color dark, it is a defect;

[0034] (4) after polishing and checking one side, turn over the sample and repeat the polishing and checking according to the requirements of steps (2) and (3).

[0035] In the embodiment, the hand polishing device includes a fixed plate 10 provided with a handle 50 on the upper side, the bottom surface of the fixed plate is connected with a sponge layer 20, the lower side of the sponge layer is provided with a bottom plate 30, the bottom plate is covered with a sand net 40 on the lower side, and the two ends of the sand net are respectively turned to the upper side and connected with the clamping device provided on the upper side of the fixed plate.

[0036] In the embodiment, the two sides of the fixed plate are provided with counterbores penetrating through the fixed plate from bottom to top, and the counterbores are provided with locking bolts 13 fixedly connected with the end of the handle.

[0037] In the embodiment, the fixed plate is a stainless steel sheet 11 with a layer of foam plate 12 adhered to the bottom surface, the thickness of the stainless steel sheet is 0.3 mm, the foam plate is a high foaming material with a hardness of 38, and the thickness is 2-4 mm, preferably 2 mm. The handle is fixed on the upper side of the stainless steel sheet, and the locking bolt is fixedly connected with the handle through the counterbores. The bottom plate is a foam plate made of high foaming material with a hardness of 38, and the thickness is 2-4 mm, preferably 3 mm. The high foaming material can be an EVA foaming panel.

[0038] In another embodiment, the fixing plate and the bottom plate can both be foam plates with a hardness of 38.

[0039] In this embodiment, the thickness of the sponge layer is 15-25 mm, preferably 20 mm, which can be fixed to the lower side of the fixing plate by adhesive. The bottom plate can be fixed to the lower side of the sponge layer by adhesive, or directly attached to the lower side of the sponge layer.

[0040] In this embodiment, the sand mesh can be a 500-mesh sand mesh.

[0041] In this embodiment, the clamping device includes fixed clamps 60 arranged on both sides of the upper end surface of the fixing plate, and the end of the sand mesh is connected to the fixed clamps. The fixed clamps are metal clamps with clamping force realized by torsion springs. The end of the sand mesh is connected to the fixed clamps to realize clamping of the sand mesh; at the same time, the end of the bottom plate, the sponge layer, and the fixing plate are covered by the sand mesh, and the side of the bottom plate is also wrapped by the sand mesh.

[0042] In this embodiment, the steel plate is provided with a recess for the handle to pass through, so as to better install the fixing plate.

[0043] In this embodiment, the planar height of the polishing workbench is 900 mm, and the planar specifications are 2500 mm in width * 4000 mm in length. The polishing workbench is padded with a layer of high-foaming material panel (38 hardness) on the planar surface, and the thickness of the high-foaming material panel is 10-20 mm, preferably 15 mm. The high-foaming material panel can use EVA foaming panel.

[0044] In this embodiment, the shadowless light source is composed of several wide-body bracket integrated lamps and is arranged above the polishing workbench, and the distance between the shadowless light source and the upper surface of the polishing workbench is more than 1000 mm.

[0045] Specifically, the shadowless light source is composed of 13 wide-body bracket integrated lamps, wherein 5 wide-body bracket integrated lamps are arranged in a longitudinal direction and are spaced apart in a transverse direction on both sides above the polishing workbench, and the wide-body bracket integrated lamps on both sides above the polishing workbench are arranged symmetrically; 3 wide-body bracket integrated lamps are arranged in a transverse direction and are spaced apart in a transverse direction in the middle above the polishing workbench. The distance between the wide-body bracket integrated lamps and the upper surface of the polishing workbench is 1100 mm.

[0046] The above merely describes the preferred embodiments of the present application, and for those skilled in the art, no creative labor is needed to design different forms of the detection method of the micro-deformation of the surface of the aluminum plate according to the teaching of the present application, and any equivalent change, modification, replacement and transformation made within the scope of the present application should be covered by the present application.

Claims

1. A method for detecting micro deformation of an aluminum plate surface, characterized by, It comprises the following steps: (1) make a manual polishing device, a polishing workbench, a set of shadowless light source: the shadowless light source is composed of 13 wide bracket integral lamps, wherein 5 wide bracket integral lamps are arranged on the upper sides of the polishing workbench in a transverse direction, and the wide bracket integral lamps on the upper sides of the polishing workbench are arranged symmetrically; 3 wide bracket integral lamps are arranged on the upper middle of the polishing workbench in a transverse direction; The manual polishing device comprises a fixed plate provided with a handle on the upper side, the bottom surface of the fixed plate is connected with a sponge layer, the lower side of the sponge layer is provided with a bottom plate, the bottom plate is covered with a sand screen on the lower side, and the two ends of the sand screen are bent upward and connected with the clamping device arranged on the upper side of the fixed plate; The polishing workbench is provided with a layer of high foaming material panel on the plane; The shadowless light source is composed of a plurality of wide bracket integral lamps and arranged above the polishing workbench, and the distance between the shadowless light source and the upper surface of the polishing workbench is more than 1000mm; (2) place the sample to be inspected on the polishing workbench, polish the sample surface in the same position along the arc for 3 times with the manual polishing device, and the polished surface is bright, and gradually move the polishing position to cover the entire sample surface; (3) check the sample surface under the shadowless light source, if the surface is locally bright or the color is dark, it is a defect; (4) after polishing and checking one side of the sample, turn over the sample and repeat the polishing and checking according to the requirements of steps (2) and (3).

2. The method of claim 1, wherein the micro-deformation of the aluminum plate surface is detected by using a laser displacement sensor. The fixed plate is a stainless steel sheet with a layer of foam plate adhered to the bottom surface, the handle is fixed on the upper side of the stainless steel sheet, and the bottom plate is a foam plate; or the fixed plate and the bottom plate are both foam plates.

3. The method of claim 1 or 2, wherein the method is characterized by: The two sides of the fixed plate are provided with counterbores penetrating through the fixed plate from bottom to top, and the counterbores are provided with lock bolts fixedly connected with the end part of the handle.

4. The method of claim 1, wherein the micro-deformation of the aluminum plate surface is detected by using a laser displacement sensor. The clamping device comprises fixed clamps arranged on the upper end surfaces of the fixed plate, and the end part of the sand screen is connected with the fixed clamps.

5. The method of claim 1, 2 or 4, wherein The thickness of the fixed plate is 2-4mm; the thickness of the sponge layer is 15~25mm; the thickness of the bottom plate is 2-4mm.

6. The method of claim 1, wherein the micro-deformation of the aluminum plate surface is detected by using a laser displacement sensor. The sand screen is a 500 mesh sand screen.

7. The method of claim 1, wherein the step of detecting the micro-deformation of the aluminum plate surface is performed by using a laser microscope. The plane height of the polishing workbench is 900mm, and the plane size is 2500mm *4000mm.

8. The method of claim 1 or 7, wherein the method is characterized by: The thickness of the high foaming material panel is 10~20mm.

9. The method of claim 1, wherein the method is characterized by: The distance between the wide bracket integral lamp and the upper surface of the polishing workbench is 1100mm.

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