CN111089810A - Device and method for testing surface hardness of electronic glass - Google Patents
Device and method for testing surface hardness of electronic glass Download PDFInfo
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- CN111089810A CN111089810A CN201911399658.3A CN201911399658A CN111089810A CN 111089810 A CN111089810 A CN 111089810A CN 201911399658 A CN201911399658 A CN 201911399658A CN 111089810 A CN111089810 A CN 111089810A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
- G01N3/44—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid the indentors being put under a minor load and a subsequent major load, i.e. Rockwell system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
- G01N3/46—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid the indentors performing a scratching movement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0078—Hardness, compressibility or resistance to crushing using indentation
- G01N2203/0082—Indentation characteristics measured during load
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- General Health & Medical Sciences (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a device for testing the surface hardness of electronic glass, which is simple to operate, and the testing device continuously tests under different pressures through a sliding block moving device, thereby improving the measuring precision and reducing the human error. The device for testing the surface hardness of the electronic glass comprises a testing rod, a testing head and a bearing platform; the testing rod is cylindrical, and the bottom end of the testing rod is connected with the connecting end of the testing head; the testing end of the testing head is arranged in an arc-shaped pen point; the testing end of the testing head is in contact with the arc-shaped point on the surface of the electronic glass; the weighing platform is vertically arranged on the test rod and is integrated with the test rod; the device also comprises a fixed frame, a connecting rod, a sliding block, a handle, a track, a rack and a vertical rod; the fixed frame is in a cuboid shape, the test rod is sleeved in the fixed frame, and the fixed frame is connected with the sliding block through the connecting rod; the rail horizontally penetrates through the sliding block, and two ends of the rail are fixed on the rack through vertical rods; the handle is arranged on the sliding block.
Description
Technical Field
The invention relates to the technical field of electronic glass testing, in particular to a device and a method for testing the surface hardness of electronic glass.
Background
Electronic glass technology has become more and more mature in domestic development, and in order to meet the high requirements of consumers on display devices, various panel manufacturers have higher and higher requirements on various performances of electronic glass, and each process from factory inspection to the processing process has different inspection contents. The scratch of the glass surface is the most basic of factory inspection, and no matter the clamp and the brush which are contacted in the production process of the electronic glass or the collision in the packaging process and the transportation process, the scratch of the glass surface is inevitably caused, so that the factory inspection qualification rate of electronic glass products entering panel manufacturers is low, the cost is increased, and the confidence of customers on the production of high-quality products by electronic glass companies is influenced, therefore, the study on the hardness of the glass is very important for selecting materials in the processes of proper processing, packaging, transportation and the like.
The hardness of glass is understood to be the ability of the glass to resist the penetration of another material into its interior without residual deformation. Currently, the hardness is commonly expressed by mohs hardness (scratch method), pencil hardness (scratch method), microhardness (indentation method), grinding hardness (abrasion method), and scratch hardness (indentation method). The Mohs hardness and the pencil hardness belong to a scratch method, the Mohs hardness is compared one by using each standard, the difference between the hardness of two adjacent standards is large, and the detection result is not accurate. During the pencil hardness test, although pencils with various hardness can be selected and different loads can be applied, so that the test result is accurate, the test head and the electronic glass form a fixed angle in the test process and are in line contact with the surface of the electronic glass, the pen point is abraded in the test process, the test angle and the integrity of the pen point need to be paid attention to all the time, and therefore human errors exist and the efficiency is low.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the device and the method for testing the surface hardness of the electronic glass, the operation is simple, the testing device continuously tests under different pressures through the sliding block moving device, the measurement precision is improved, and the human error is reduced.
The invention is realized by the following technical scheme:
a device for testing the surface hardness of electronic glass comprises a testing rod, a testing head and a bearing platform;
the testing rod is cylindrical, and the bottom end of the testing rod is connected with the connecting end of the testing head;
the testing end of the testing head is arranged in the shape of an arc-shaped pen point; the testing end of the testing head is in contact with the arc-shaped point on the surface of the electronic glass;
the weighing platform is vertically arranged on the testing rod and is integrated with the testing rod.
Preferentially, the weighing machine further comprises a plurality of weights, and the weights vertically penetrate through the top end of the testing rod and are placed on the weighing platform.
Preferably, the device also comprises a fixed frame, a connecting rod, a sliding block, a handle, a track, a rack and a vertical rod;
the fixed frame is cuboid, the test rod is sleeved in the fixed frame, and the fixed frame is connected with the sliding block through the connecting rod;
the rail horizontally penetrates through the sliding block, and two ends of the rail are fixed on the rack through vertical rods;
the handle is arranged on the sliding block.
Furthermore, the two ends of the track are vertically connected with the vertical rod.
Furthermore, the test rod is respectively perpendicular to the connecting rod and the track.
Further, the weighing platform is located the mount top.
A method for testing the surface hardness of electronic glass based on the device in any one of the preceding items comprises the following steps,
step 1) connecting a test head to a test rod, vertically placing the test rod without the applied weight into a fixed frame, and adjusting the position to enable the test end of the test head to be placed in a mark area on the surface of the electronic glass;
step 2) applying weights to a weighing platform of the test rod, rotating a handle to enable a sliding block to move on a track, and simultaneously driving a fixing frame and a test head to scribe in a mark area on the surface of the electronic glass;
step 3), after scribing is finished, the electronic glass is horizontally moved around a scribed area, weights are loaded on the weighing platform again, the handle is rotated to enable the sliding block to move on the track, meanwhile, the fixing frame and the testing head are driven to scribe in a mark area on the surface of the electronic glass, and the operation of the step 3) is repeatedly executed until macroscopic scratches appear on the surface of the electronic glass;
and 4) placing the marked area on the surface of the electronic glass under a microscope, observing from the last scratch in the marked area until the scratch cannot be observed, wherein the corresponding force when the scratch cannot be observed is the maximum external force borne by the electronic glass at the boundary between the scratch and the scratch, and the greater the force is, the greater the surface hardness of the electronic glass is.
Preferably, in step 2), the hardness of the material of the test head is greater than that of the electronic glass.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the invention, the test head is in contact with the surface of the electronic glass in a circular arc-shaped point, so that the damage of the pen point in the test is avoided; weights are continuously placed on the bearing platform on the test rod, different pressure values are tested, and test contrast is improved; the handle is rotated to control the slider to move on the track, so that the testing head is driven to move on the surface of the electronic glass, the mechanization of the device is increased, the human error is reduced, and the testing efficiency is improved. The test end of the test head is in contact with the arc-shaped point on the surface of the electronic glass, so that sharp point contact which is easy to scratch the glass is avoided, and incomplete line contact which is easy to contact is also avoided. .
Furthermore, the weights are placed on the weighing platform, so that the mechanization of the testing equipment and the accuracy of the testing result are improved, and convenience is provided for testing.
Furthermore, the mobile device assists the testing device to test, so that human errors are reduced, and the testing accuracy is improved.
Furthermore, the two ends of the rail are perpendicularly connected with the vertical rod, so that the stability of the sliding block moving on the rail is improved.
Furthermore, the length of the vertical rods connected with the two ends of the track is equal, so that the slide block is prevented from being inclined in the moving process, and the accuracy of a test result is ensured.
Furthermore, the test rod is perpendicular to the connecting rod and the track, so that the test stability is guaranteed.
Drawings
FIG. 1 is a schematic view of an apparatus for measuring surface hardness of electronic glass;
fig. 2 is a schematic view of a slider moving device.
In the figure: 1, testing to be dry; 2, testing the head; 3, fixing a frame; 4 a load bearing platform; 5, a weight; 6 connecting rods; 7, a sliding block; 8, a handle; 9, tracks; 10 a frame; 11 vertical bar.
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention provides a device for testing the surface hardness of electronic glass, wherein a handle 8 is rotated to enable a sliding block 7 to move on a track 9, meanwhile, a fixed frame 3 and a testing head 2 are driven to mark in a marking area on the surface of the electronic glass, a weight 5 is applied to a weighing platform 4 on a testing rod 1, and as shown in figure 1, the scratching condition of the testing head 2 on the electronic glass is tested under different pressures.
The frame 10 is fixed at the two ends of the track 9 through the vertical rod 11, and the handle 8 is rotated to make the sliding block slide left and right on the track 9, as shown in fig. 2.
In another aspect of the present invention, a method for testing the surface hardness of electronic glass comprises the steps of:
step 1) connecting a test head 2 to a test rod 1, vertically placing the test rod 1 without weights into a fixing frame 3, and adjusting the position to enable a test end of the test head 2 to be placed in a mark area on the surface of the electronic glass;
step 2) applying weights 5 to a weighing platform 4 of the test rod 1, rotating a handle 8 to enable a sliding block 7 to move on a track 9, and simultaneously driving a fixing frame 3 and a test head 2 to mark in a mark area on the surface of the electronic glass;
step 3) after the first scribing is finished, the electronic glass is horizontally moved around the scribed area, after the weights 5 are loaded on the weighing platform 4 again, the handle 8 is rotated to enable the sliding block 7 to move on the track 9, and meanwhile, the fixing frame 3 and the testing head 2 are driven to scribe in the marking area on the surface of the electronic glass until macroscopic scratches appear on the surface of the electronic glass;
and 4) placing the marked area on the surface of the electronic glass under a microscope, observing from the last scratch in the marked area until the scratch cannot be observed, wherein the corresponding force when the scratch cannot be observed is the maximum external force borne by the electronic glass at the boundary between the scratch and the scratch, and the greater the force is, the greater the surface hardness of the electronic glass is.
In this example, a glass sheet of about 100 x 1mm was cut for surface hardness testing, which was performed by the following steps:
1) connecting a test head made of tungsten steel to the test rod, vertically placing the test rod without the weight in the fixing frame, and adjusting the position to enable the test end of the test head to be placed in the mark area on the surface of the electronic glass;
2) the testing rod and the testing head weigh 100g in total, namely, a force of about 1N is applied to the surface of the electronic glass, the handle is rotated to enable the sliding block to move on the track, and meanwhile, the fixing frame and the testing head are driven to scratch about 50mm on the surface of the electronic glass, the marking area is not exceeded, and no scratch can be seen by naked eyes;
3) the electronic glass horizontally moves for about 5mm, a weight of 50g is added, namely, a force of about 1.5N is applied to the surface of the electronic glass, the handle is rotated to enable the sliding block to move on the track, and meanwhile, the fixing frame and the testing head are driven to scratch for about 50mm on the surface of the electronic glass, the marking area is not exceeded, and no scratch can be seen by naked eyes; repeatedly horizontally moving the electronic glass for 5mm, adding 50g of weight each time, and scratching the surface of the electronic glass by the test head for 50mm until a macroscopic scratch appears on the surface of the electronic glass when a force of about 5N is applied;
4) and placing the marked area on the surface of the electronic glass under a microscope, observing the marked area from the scratch corresponding to 5N, judging that the surface hardness of the electronic glass can bear the force of 4N if the mark still exists under the microscope at 4.5N, and does not exist under the microscope at 4N or 3.5N.
Claims (8)
1. A device for testing the surface hardness of electronic glass is characterized in that: comprises a test rod (1), a test head (2) and a bearing platform (4);
the testing rod (1) is cylindrical, and the bottom end of the testing rod is connected with the connecting end of the testing head (2);
the testing end of the testing head (2) is arranged in the shape of an arc-shaped pen point; the testing end of the testing head (2) is in contact with the arc-shaped point on the surface of the electronic glass;
the weighing platform (4) is vertically arranged on the testing rod (1) and is integrated with the testing rod (1).
2. The device for testing the surface hardness of the electronic glass according to claim 1, further comprising a plurality of weights (5), wherein the weights (5) vertically penetrate through the top end of the testing rod (1) and are placed on the weighing platform (4).
3. The apparatus for testing the surface hardness of electronic glass according to claim 1, wherein: the device also comprises a fixed frame (3), a connecting rod (6), a sliding block (7), a handle (8), a track (9), a rack (10) and a vertical rod (11);
the fixing frame (3) is rectangular, the testing rod (1) is sleeved in the fixing frame (3), and the fixing frame (3) is connected with the sliding block (7) through a connecting rod (6);
the rail (9) horizontally penetrates through the sliding block (7), and two ends of the rail (9) are fixed on the rack (10) through vertical rods (11);
the handle (8) is arranged on the sliding block (7).
4. The apparatus for testing the surface hardness of electronic glass according to claim 3, wherein: the two ends of the track (9) are vertically connected with the vertical rod (11).
5. The apparatus for testing the surface hardness of electronic glass according to claim 3, wherein: the test rod (1) is respectively and vertically arranged with the connecting rod (6) and the track (9).
6. The apparatus for testing the surface hardness of electronic glass according to claim 3, wherein: the weighing platform (4) is positioned above the fixing frame (3).
7. A method for testing the surface hardness of electronic glass, based on the device of any one of claims 1 to 6, comprising the steps of,
step 1), connecting a test head (2) to a test rod (1), vertically placing the test rod (1) without a weight (5) into a fixing frame (3), and adjusting the position to enable a test end of the test head (2) to be placed in a mark area on the surface of the electronic glass;
step 2) applying weights (5) to a weighing platform (4) of the test rod (1), rotating a handle (8) to enable a sliding block (7) to move on a track (9), and simultaneously driving a fixing frame (3) and a test head (2) to mark in a mark area on the surface of the electronic glass;
step 3), after scribing is finished, the electronic glass is moved horizontally around a scribed area, weights (5) are loaded on the weighing platform (4) again, the handle (8) is rotated to enable the sliding block (7) to move on the track (9), meanwhile, the fixing frame (3) and the testing head (2) are driven to scribe in a marking area on the surface of the electronic glass, and the operation of the step 3) is repeatedly executed until macroscopic scratches appear on the surface of the electronic glass;
and 4) placing the marked area on the surface of the electronic glass under a microscope, observing from the last scratch in the marked area until the scratch cannot be observed, wherein the corresponding force when the scratch cannot be observed is the maximum external force borne by the electronic glass at the boundary between the scratch and the scratch, and the greater the force is, the greater the surface hardness of the electronic glass is.
8. The method for testing the surface hardness of electronic glass according to claim 7, wherein: in the step 2), the hardness of the material of the test head (2) is greater than that of the electronic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399658.3A CN111089810A (en) | 2019-12-30 | 2019-12-30 | Device and method for testing surface hardness of electronic glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399658.3A CN111089810A (en) | 2019-12-30 | 2019-12-30 | Device and method for testing surface hardness of electronic glass |
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| Publication Number | Publication Date |
|---|---|
| CN111089810A true CN111089810A (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911399658.3A Pending CN111089810A (en) | 2019-12-30 | 2019-12-30 | Device and method for testing surface hardness of electronic glass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113125270A (en) * | 2021-03-31 | 2021-07-16 | 彩虹集团（邵阳）特种玻璃有限公司 | Device for testing actual state of cover plate glass after internal tensile stress is broken and using method |
-
2019
- 2019-12-30 CN CN201911399658.3A patent/CN111089810A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113125270A (en) * | 2021-03-31 | 2021-07-16 | 彩虹集团（邵阳）特种玻璃有限公司 | Device for testing actual state of cover plate glass after internal tensile stress is broken and using method |
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