CN214539055U - A device for brinell hardness test - Google Patents
A device for brinell hardness test Download PDFInfo
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- CN214539055U CN214539055U CN202023283601.8U CN202023283601U CN214539055U CN 214539055 U CN214539055 U CN 214539055U CN 202023283601 U CN202023283601 U CN 202023283601U CN 214539055 U CN214539055 U CN 214539055U
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Abstract
The utility model discloses a device for brinell hardness test has solved among the prior art portable brinell hardness tester and has observed the in-process of test piece at reading microscope, and the test piece probably can not erect on the plane, has brought the difficulty for reading microscope's observation, is difficult to the problem of direct observation test piece level and smooth surface's device, and it includes: the box body, the top of box body is provided with the several fixed block, the fixed installation piece that is provided with of one end of box body, the expert of installation piece has adjusting screw, adjusting screw is close to the fixed pushing head that is provided with of one end of fixed block, adjusting screw keeps away from the fixed rotary rod that is provided with of one end of pushing head, be provided with the test piece between the fixed block, realized when using portable brinell hardness appearance, can press from both sides the test piece through adjustable anchor clamps and press from both sides tightly to the one side and the adjustable anchor clamps that punch the test piece form a plane, and carry out reading microscope's observation on the plane, make things convenient for the practicality of portable brinell hardness appearance.
Description
Technical Field
The utility model belongs to the technical field of the hardness test, specifically belong to a device for brinell hardness test.
Background
Brinell hardness is a standard for expressing the hardness of materials. Measured by a Brinell hardness tester, first proposed by Bonrei, Sweden, so called Brinell hardness, quenching of diameter D with a load P of a certain magnitudeSteel ballPressing into the surface of the metal material to be tested, and removing the load after keeping for a period of time. The ratio of the load P to the indentation surface area F is the Brinell hardness value and is designated HB. The brinell hardness tester is a precision metrology instrument for measuring the brinell hardness of metals. The Brinell hardness tester is mainly used for hardness measurement of materials such as cast iron, steel, nonferrous metal, soft alloy and the like, and the Brinell hardness test is a test method with the largest indentation in all hardness tests, can reflect the comprehensive performance of the materials, is not influenced by microsegregation of sample structures and uneven components, and is a hardness test method with higher precision.
In the prior art, the Brinell hardness tester mainly comprises two types, one type is a table Brinell hardness tester, and is suitable for Brinell hardness test in a laboratory. The Brinell hardness value of the metal is expressed by the average pressure on the spherical surface area of the indentation of the sample, the Brinell hardness value test method has the advantages that the machine is integrated, the test piece is pressed by the steel ball, the indentation surface can be directly observed after the indentation is obtained, and data can be obtained; the other is a portable Brinell hardness tester which is generally composed of a steel pressure head and a reading microscope, has small volume and is convenient to carry. The Brinell hardness tester is mainly used for testing the hardness of forged steel and cast iron with uneven structures, and the Brinell hardness of the forged steel and gray cast iron is in good correspondence with a tensile test. The brinell hardness test can also be used for nonferrous metals and mild steels, and small-size and thinner materials can be measured by using a small-diameter ball indenter. The Brinell hardness tester is mostly used for detecting raw materials and semi-finished products, and is generally not used for detecting finished products due to large indentation. Selection of the Brinell hardness test conditions As with the Rockwell hardness test with respect to the scale, the Brinell hardness test also suffers from the selection of the test conditions, i.e., the test force F and the indenter ball diameter D. This choice is not arbitrary, but follows certain rules, and the reasonable matching of the test force and the indenter ball diameter is of interest and is somewhat more complex to apply than the rockwell hardness test.
The two Brinell hardness testers can well complete the Brinell hardness test, but the table-type Brinell hardness tester has the defects that the machine is heavy and is not easy to carry; portable brinell hardness appearance is at the in-process that reading microscope observed the test piece, and the test piece probably can not erect on the plane, has brought the difficulty for reading microscope's observation, under the condition that brinell hardness test more and more needs its portability now, urgently needs a reading microscope that can improve portable brinell hardness appearance to observe inconveniently, is difficult to the device of direct observation test piece level and smooth surface.
SUMMERY OF THE UTILITY MODEL
In-process to reading microscope observation test piece among the prior art, the test piece probably can not erect on the plane, has brought the problem of difficulty for reading microscope's observation, the utility model provides a device for brinell hardness test, its aim at: when using portable brinell hardness appearance, can press from both sides the test piece tightly through adjustable anchor clamps to the one side that punches the test piece forms a plane with adjustable anchor clamps, and carries out reading microscope's observation on the plane, makes things convenient for portable brinell hardness appearance's use.
The utility model adopts the technical scheme as follows:
an apparatus for brinell hardness testing, comprising: the box body, the top of box body is provided with the several fixed block, the fixed installation piece that is provided with of one end of box body, the expert of installation piece has adjusting screw, adjusting screw is close to the fixed head that pushes away that is provided with of one end of fixed block, adjusting screw keeps away from the fixed rotary rod that is provided with of one end of pushing away the head, be provided with the testpieces between the fixed block, the top of testpieces is provided with reading microscope.
By adopting the scheme, before the observation of a reading microscope, a test piece is dotted by a steel pressure head, after dotting is finished, dents are left on the surface of the test piece, the fixing blocks on the box body are taken down or installed according to the size of the test piece, the test piece with the dents is clamped between the two fixing blocks, the surface of the test piece to be tested and the fixing blocks form a plane, a rotating rod is rotated, the adjusting rod rotates while keeping the central axis unchanged because the rotating rod is vertically fixed with an adjusting screw rod, the adjusting screw rod is pushed in the direction of the fixing blocks under the action of the rotation of the screw thread because the surface is covered with the screw thread, the two fixing blocks are clamped towards the middle, the fixing of the test piece is finished, the reading microscope is placed on the plane, the surface of the test piece with dents to be tested is aligned, observation and reading are carried out, and when the portable Brinell hardness tester is used through the matching of the devices, the test piece is provided with the concave marks, and the surface to be tested always forms a plane with the fixed block, so that the portable Brinell hardness tester is more convenient to use and accurate in reading.
Preferably, a gap matched with each other is arranged between the two fixing blocks.
By adopting the scheme, when a test piece with an irregular shape is tested, the rotating rod can be reversely rotated firstly, the rotating rod drives the adjusting screw rod to push out in the direction away from the fixed blocks, the two fixed blocks with the mutually matched notches are placed in the middle, after the movement of the fixed blocks is completed, the test piece is dotted through the steel pressure head, after the dotting is completed, the surface of the test piece is provided with dents, the test piece is placed into the notches of the two fixed blocks with the mutually symmetrical notches, the plane of the irregular test piece to be tested and the fixed blocks form a plane, the notch of the irregular test piece can better clamp the irregular test piece relative to the parallel fixed blocks, the rotating rod is rotated after the irregular clamping of the test piece is completed, the adjusting screw rod is pushed in the direction close to the fixed blocks, and the two fixed blocks with the mutually matched notches are clamped in the direction of the irregular test piece, and accomplish fixedly, then put the reading microscope on the plane to the alignment has sunken, needs the irregular test piece plane that detects, observes the reading, through set up the breach on two fixed blocks, can guarantee if the test piece is not regular cuboid or square, also can firmly press from both sides the test piece between two fixed blocks, and carry out accurate reading observation.
Preferably, the adjusting screw is vertically bolted to the rotating rod.
Adopt above-mentioned scheme, when rotating the rotary rod, through above-mentioned connection scheme, can make adjusting screw rotate around its center pin, and because the adjusting screw surface is provided with the screw, one side of installation piece is provided with the screw with adjusting screw complex, when adjusting screw rotates, can be according to the corotation or the reversal of rotary rod, realize adjusting screw's flexible function, and drive through adjusting screw's flexible extrusion head, make extrusion head carry out the space of vacating to the extrusion of installation piece or for the installation of installation piece, the tightness of this device is adjusted, and the free rotation to adjusting screw.
Preferably, the length of the fixed block is 7-10 cm.
By adopting the scheme, various test piece sizes needing to be subjected to the Brinell hardness test can be realized, and the test piece needs to be damaged in the Brinell hardness test, the surface of the test piece is pressurized through the steel pressing piece, and dents are left for reading and observing by a reading microscope, so that the test piece is a semi-finished product or a sample for the Brinell hardness test, the length of the fixing block placed at the top of the box body is 7-10cm, the clamping work can be well completed, the integral volume is kept within a reasonable range, and the portability of the device is ensured.
Preferably, the width of the fixing block is 1-2 cm.
By adopting the scheme, in order to fit test pieces with various sizes, a plurality of fixed blocks are required to be prevented from being reserved at the top of the box body, if the size of the test piece is larger than 5cm, 2-3 fixed blocks are required to be taken down, and a space for placing the test piece is reserved.
Preferably, the height of the fixed block is 2-3 cm.
By adopting the scheme, the height of the fixing block is set to be 2-3cm, so that the installation block can firmly clamp the test piece, if the height is lower than 2cm, the installation block can carry out incomplete clamping on the test piece, part of the test piece is exposed, the test piece is shaken to influence observation after reading observation of a reading microscope, and if the height is larger than 3cm, the portability of the whole device is influenced by the volume weight of the installation block.
Preferably, the adjusting screw is made of stainless steel.
Adopt above-mentioned scheme, because of the consideration to this device durability, adopt stainless steel, owing to in the test process, the staff need relieve adjusting screw, rust or corrosion display can appear probably appearing after long-time the use, adopt stainless steel's adjusting screw, can guarantee adjusting screw's life and intensity.
Preferably, the length of the box body is 10-12 cm.
By adopting the scheme, 4-5 fixed blocks can be stored in the box body, and the portability of the box body is not influenced.
Preferably, the pushing head is a cylinder.
By adopting the scheme, the pushing head needs to bear the thrust from the adjusting screw rod and transmit the thrust to the fixed block to finish the clamping between the mounting openings, so that the cylinder is adopted, the force bearing and the force finishing are conducted through the circular surface, and the damage of the mounting block caused by uneven stress on the fixed block is effectively prevented.
Preferably, the diameter of the extrusion head is 2-3 cm.
By adopting the scheme, the diameter of the pushing head is set to be 2-3cm, so that the bearing surface of the mounting block can be well matched.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. before observing a reading microscope, dotting a test piece by a steel pressure head, after dotting is finished, leaving dents on the surface of the test piece, taking down or installing the installation blocks on the box body according to the size of the test piece, clamping the test piece with the dents between the two installation blocks, enabling the surface of the test piece to be tested and the installation blocks to form a plane, rotating a rotating rod, enabling an adjusting rod to rotate without changing the central axis because the rotating rod is vertically fixed with an adjusting screw rod, pushing the adjusting screw rod towards the direction of the installation blocks under the action of rotation of the threads because the surface of the adjusting screw rod is covered with threads, clamping the two installation blocks towards the middle, completing the fixing of the test piece, placing the reading microscope on the plane, aligning the surface of the test piece with the dents to be tested, observing and reading, and when the portable Brinell hardness tester is used by the matching of the devices, the test piece is provided with the concave marks, and the surface to be tested and the mounting block form a plane all the time, so that the portable Brinell hardness tester is more convenient to use and accurate in reading.
2. When a test piece with an irregular shape is tested, the rotating rod can be reversely rotated, so that the rotating rod drives the adjusting screw rod to push out in a direction away from the mounting blocks, the two mounting blocks with the mutually matched notches are placed in the middle, after the movement of the mounting blocks is completed, the steel pressure head is used for dotting the test piece, after the dotting is completed, dents are left on the surface of the test piece, the test piece is placed into the notches of the two mounting blocks with the mutually symmetrical notches, a plane of the irregular test piece to be tested and the mounting blocks form a plane, the notch of the plane is opposite to that of the parallel mounting blocks, the test piece with the irregular shape can be better clamped, the rotating rod is rotated after the clamping of the irregular test piece is completed, the adjusting screw rod is pushed in a direction close to the mounting blocks, and the two mounting blocks with the mutually matched notches are clamped in the direction of the irregular test piece, and accomplish fixedly, then put the reading microscope on the plane to the alignment has sunken, needs the irregular test piece plane that detects, observes the reading, through set up the breach on two installation pieces, can guarantee if the test piece is not regular cuboid or square, also can firmly press from both sides the test piece between two installation pieces, and carry out accurate reading observation.
3. When rotating the rotary rod, through above-mentioned connection scheme, can make adjusting screw rotate around its center pin, and because the adjusting screw surface is provided with the screw, one side of installation piece is provided with the screw with adjusting screw complex, when adjusting screw rotates, can be according to the corotation or the reversal of rotary rod, realize adjusting screw's flexible function, and drive through adjusting screw's flexible head of pushing, make the head of pushing push carry out the space of pushing or taking off for the installation of installation piece, the tightness regulation of this device has been realized, and the free rotation to adjusting screw.
4. Can realize various test piece sizes that need carry out the brinell hardness test, because in the brinell hardness test, need destroy the test piece, pressurize the test piece surface through the steel casting die, and leave the indent, observe in order to be equipped with reading microscope and carry out the reading, so be used for carrying out the brinell hardness test and be semi-manufactured goods or sample, the length of placing the installation piece at box body top adopts 7-10cm, can accomplish clamping work betterly, and ensure that whole volume keeps in reasonable range, ensure the portability of device.
5. In order to fit test pieces of various sizes, a plurality of mounting blocks need to be prevented from being reserved at the top of the box body, if the size of the test piece is larger than 5cm, 2-3 mounting blocks need to be taken down to be mounted, and a space for placing the test piece is reserved.
6. The height of the fixing block is set to be 2-3cm, so that the installation block can firmly clamp the test piece, if the height of the fixing block is lower than 2cm, the installation block can carry out incomplete clamping on the test piece, part of the test piece is exposed, the test piece is shaken in reading observation of a reading microscope to influence observation, and if the height of the fixing block is larger than 3cm, the portability of the whole device is influenced by the volume weight of the installation block.
7. Because of the consideration to this device durability, adopt stainless steel, owing to in the test process, the staff need remove adjusting screw, rust or corrosion display can appear in the long-time back of using, adopt stainless steel's adjusting screw, can guarantee adjusting screw's life and intensity.
8. 4-5 installation blocks can be stored in the box body, and the portability of the box body is not influenced.
9. The pushing head needs to bear the thrust from the adjusting screw rod and transmit the thrust to the mounting block to complete clamping between mounting openings, so that the cylindrical body is adopted, force bearing and force transmission can be completed through the circular surface, and damage to the mounting block due to uneven stress of the mounting block is effectively prevented.
10. The diameter of the pushing head is set to be 2-3cm, so that the pushing head can better fit with the stress surface of the mounting block.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of: the utility model discloses a main visual angle structure chart of an implementation mode;
FIG. 2 is a diagram of: the whole structure chart of the utility model is an implementation mode;
FIG. 3 is a diagram of: the utility model discloses a depression structure diagram of an implementation mode;
FIG. 4 is a diagram of: the utility model discloses an embodiment's irregular structure test piece presss from both sides tight structure chart.
Reference numerals: 1-box body; 2-reading microscope; 3-mounting a block; 4, fixing blocks; 5-pushing the extrusion head; 6-adjusting a screw rod; 7-rotating rod; 8-test piece;
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 to 4.
The first embodiment is as follows: .
An apparatus for brinell hardness testing, comprising: box body 1, the top of box body 1 is provided with several fixed block 4, the fixed installation piece 3 that is provided with of one end of box body 1, the expert of installation piece 3 has adjusting screw 6, adjusting screw is close to the fixed head 5 that pushes away that is provided with of one end of fixed block 4, adjusting screw 6 keeps away from the fixed rotary rod 7 that is provided with of one end of pushing away head 5, be provided with testpieces 8 between fixed block 4, the top of testpieces 8 is provided with reading microscope 2.
And a gap matched with each other is arranged between the two fixing blocks 4.
The adjusting screw 6 is vertically bolted with a rotating rod 7.
The length of the fixed block 4 is 7-10 cm.
The width of the fixed block 4 is 1-2 cm.
The height of the fixed block 4 is 2-3 cm.
The adjusting screw 6 is made of stainless steel.
The length of the box body 1 is 10-12 cm.
The pushing head 5 is a cylinder.
The diameter of the extrusion head 5 is 2-3 cm.
In the above embodiment, the steel pressure head is used for dotting the test piece, after dotting is completed, the surface of the test piece is provided with the dent, the fixed block 4 on the box body 1 is taken down or installed according to the size of the test piece, the test piece with the dent is clamped between the two fixed blocks 4, the surface of the test piece to be tested and the fixed blocks 4 form a plane, the rotating rod 7 is rotated, the rotating rod 7 is vertically fixed with the adjusting screw rod 6, the adjusting rod rotates with the central axis unchanged, the adjusting screw rod 6 is covered with the thread due to the surface covering, under the action of the rotation of the thread, the screw rod is pushed towards the direction of the fixed blocks 4, the two fixed blocks 4 are clamped towards the middle, the fixing of the test piece is completed, the reading microscope 2 is placed on the plane, the surface of the test piece with the dent to be tested is aligned, observation and reading are performed, and the portable Brinell hardness tester can be used through the matching of the above devices, the test piece is provided with the concave marks, and the surface to be tested always forms a plane with the fixed block 4; when an irregular test piece is tested, the rotating rod 7 can be rotated reversely, the rotating rod 7 drives the adjusting screw rod 6 to push out in the direction away from the fixed block 4, the two fixed blocks 4 with the mutually matched notches are placed in the middle, after the movement of the fixed blocks 4 is completed, the steel pressure head is used for dotting the test piece, after the dotting is completed, the surface of the test piece is provided with dents, the test piece is placed into the notches of the two fixed blocks 4 with the mutually symmetrical notches, the plane of the irregular test piece to be tested and the fixed blocks 4 form a plane, the notch of the plane can better clamp the irregular test piece relative to the parallel fixed blocks 4, the rotating rod 7 is rotated after the irregular test piece is clamped, the adjusting screw rod 6 is pushed in the direction close to the fixed blocks 4, and the two fixed blocks 4 with the mutually matched notches are clamped in the direction of the irregular test piece, and fixing is completed, then the reading microscope 2 is placed on the plane and is aligned to the plane of the irregular test piece which is provided with the concave part and needs to be detected, and observation reading is carried out.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (10)
1. An apparatus for Brinell hardness testing, comprising: box body (1), the top of box body (1) is provided with several fixed block (4), the fixed installation piece (3) that is provided with of one end of box body (1), the expert of installation piece (3) has adjusting screw (6), adjusting screw is close to the fixed head (5) that pushes away that is provided with of one end of fixed block (4), adjusting screw (6) are kept away from the fixed rotary rod (7) that is provided with of one end of pushing away head (5), be provided with test piece (8) between fixed block (4), the top of test piece (8) is provided with reading microscope (2).
2. The device for the brinell hardness test of claim 1, wherein there are provided cooperating notches between the two fixed blocks (4).
3. The device for the brinell hardness test of claim 1, wherein the adjusting screw (6) is vertically bolted to the rotating rod (7).
4. The device for the brinell hardness test of claim 1, wherein the length of the fixed block (4) is 7-10 cm.
5. The device for the brinell hardness test of claim 1, wherein the width of the fixing block (4) is 1-2 cm.
6. The device for the brinell hardness test of claim 1, wherein the height of the fixed block (4) is 2-3 cm.
7. The device for the brinell hardness test of claim 1, wherein the adjusting screw (6) is stainless steel.
8. The device for the brinell hardness test of claim 1, wherein the length of the cartridge (1) is 10-12 cm.
9. The device for the brinell hardness test of claim 1, wherein the extrusion head (5) is a cylinder.
10. Device for the brinell hardness test in accordance with claim 9, wherein the diameter of the extrusion head (5) is 2-3 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023283601.8U CN214539055U (en) | 2020-12-30 | 2020-12-30 | A device for brinell hardness test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023283601.8U CN214539055U (en) | 2020-12-30 | 2020-12-30 | A device for brinell hardness test |
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| Publication Number | Publication Date |
|---|---|
| CN214539055U true CN214539055U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023283601.8U Active CN214539055U (en) | 2020-12-30 | 2020-12-30 | A device for brinell hardness test |
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| CN (1) | CN214539055U (en) |
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- 2020-12-30 CN CN202023283601.8U patent/CN214539055U/en active Active
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