CN218601066U - Shearing strength testing tool for powder metallurgy material - Google Patents
Shearing strength testing tool for powder metallurgy material Download PDFInfo
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- CN218601066U CN218601066U CN202222161297.2U CN202222161297U CN218601066U CN 218601066 U CN218601066 U CN 218601066U CN 202222161297 U CN202222161297 U CN 202222161297U CN 218601066 U CN218601066 U CN 218601066U
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- Prior art keywords
- support
- powder metallurgy
- shear strength
- metallurgy material
- clamp plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 33
- 238000010008 shearing Methods 0.000 title description 5
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 12
- 238000004154 testing of material Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 4
- 230000008092 positive effect Effects 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a powder metallurgy material shear strength test fixture, including support, clamp plate and compression leg, the clamp plate setting sets up the spring on the support between clamp plate and support, adopts the bolt to link together clamp plate, spring and support, be the rail mounted contact between compression leg and support, compression leg and the clamp plate. Compared with the prior art, the utility model has the positive effects that: the utility model discloses a powder metallurgy material shear strength test fixture can test the powder material's of different mechanical properties shear strength, and frock compact structure, reasonable in design can eliminate the factor that causes test data distortion, discreteness big to make test powder metallurgy material shear strength data accurate, reliable.
Description
Technical Field
The utility model relates to a powder metallurgy material shear strength test fixture.
Background
The shear strength of a powder metallurgy product is one of important indexes for measuring the mechanical property of a material, and in order to better record and detect the characteristics of the powder metallurgy material, a matched auxiliary tool is often required to be used for detecting the shear strength of the material. The standards YS/T1009 and TJ/CL 307 specify a method and a device for testing the shear strength of a powder metallurgy material, namely, a testing machine is used for stretching and driving an upper assembly and a lower assembly of a tool to move relatively, so that a product is subjected to shear failure. However, in actual operation, in the testing device proposed by the standard, two ends of a sample to be tested are free ends, and an eccentric force is easily formed in the axial direction of the tool in the process of applying a load, so that the sample is displaced and deflected, the testing area is increased, an additional bending moment is brought to a joint surface of a material, and the results of large discreteness of testing data, data distortion and the like are caused.
Therefore, the design of the shear strength testing device with reliable testing results and reasonable design scheme is an important technical problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above shortcoming of prior art, the utility model provides a powder metallurgy material shear strength test fixture to can accurately test out the shear strength of powder metallurgy material.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a powder metallurgy material shear strength test fixture, includes support, clamp plate and compression leg, and the clamp plate setting sets up the spring on the support between clamp plate and support, adopts the bolt to link together clamp plate, spring and support, be the rail mounted contact between compression leg and support, compression leg and the clamp plate.
Compared with the prior art, the utility model has the positive effects that:
(1) The utility model discloses a powder metallurgy material shear strength test fixture can test the shear strength of the powder material of different mechanical properties, and frock compact structure, reasonable in design can eliminate and cause test data distortion, the big factor of discreteness to make test powder metallurgy material shear strength data accurate, reliable.
(2) The test sample of the shearing strength testing tool for the powder metallurgy material can be cut from the actual powder metallurgy material without special preparation; the shearing strength performance data can be accurately obtained through repeated testing and verification of the shearing strength of the powder metallurgy material; the bearing test load range is wide, 0-100 kN, and the method can be applied to different powder metallurgy materials; the thickness range of the sample can be adjusted, and the sample is suitable for being cut from different powder metallurgy materials. Simultaneously the utility model discloses a powder metallurgy material shear strength test fixture can carry out the test experiment on various universal material testing machines.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a front view of the shear strength testing tool of the present invention;
fig. 2 is a side view of the shear strength testing tool of the present invention;
the reference numbers in the figures include: the device comprises a support 1, a sample 2, a pressure plate 3, a spring 4, a bolt 5, a guide rail 6 and a compression leg 7; and fixing the mounting hole 1.1 and the threaded hole 1.2.
Detailed Description
A powder metallurgy material shear strength test tool, as shown in fig. 1 and 2, comprising: including support 1, clamp plate 3, spring 4, bolt 5, guide rail 6, compression leg 7 etc. wherein:
two fixed mounting holes 1.1 and two threaded holes 1.2 are formed in the support 1, the fixed mounting holes 1.1 are used for fixing the support, and the threaded holes 1.2 are matched with bolts 5 and used for fastening the pressure plate 3; the sample 2 is placed on a support test platform and can be prepared into a rectangular test surface sample with any size; the pressing plate 3 can float up and down along with the thickness of the sample and limit the displacement of the sample through the pretightening force of the bolt; the spring 4 can float up and down along with the thickness of the sample and support the pressing plate in a relaxed state; the bolt 5 is used for fastening the pressure plate 3 through a threaded hole 1.2 on the support; the guide rail 6 reduces the friction force between the pressure column and the support and between the pressure column and the pressure plate, so that the test data is accurate; the compression leg 7, the load receiving means, transmits the load to the sample.
The press column 7 is in rail type contact with the support 1 and the press plate 3, so that the friction force between the press column 7 and the support 1 and the press plate 3 is reduced; the height of the sample between the pressure plate 3 and the support 1 can float; the displacement of the sample 2 is limited by a floatable pressure plate 3 and a spring 4 through a fastening bolt 5.
First, the fastening bolts 5 are loosened, the free state pressing plate 3 is supported by the springs 4, the sample 2 is placed under the pressing plate 3, and the bolts 5 are tightened to fasten the pressing plate 3, thereby restricting the displacement of the sample 2.
Then, the press column 7 is pressed against the test piece through the guide rail 6 between the holder 1 and the press plate 3, so that the load is transmitted.
And finally, starting the universal material testing machine, applying a load on the compression leg 7, transmitting the load to the sample 2 through the compression leg 7, and recording the maximum load in the process of applying the load to obtain the shear strength of the sample.
Shear strength τ equation:
where F is the maximum load during application of the load, s is the test area of the specimen, l is the width of the specimen, and h is the thickness of the specimen.
Repeated tests can obtain the average value of the shear strength of the sample
Standard deviation S and coefficient of dispersion value Cv:
in the testing process of the powder metallurgy material shear strength testing device provided by the standards YS/T1009 and TJ/CL 307, because one end of the prepared powder metallurgy material sample is a free end, the sample is easy to displace and deflect when a load is applied to the powder metallurgy material testing end, so that the situations of changing the material testing area and bringing additional bending moment to the material testing surface occur, and the test data has large discreteness, distorted data and other consequences. The utility model discloses a powder metallurgy material shear strength test fixture through the displacement of clamp plate restriction powder metallurgy material sample free end, has avoided making the sample take place the displacement, deflect applying the load in-process to the sample test end, leads to changing powder metallurgy material test area and brings the condition of additional moment of flexure to the test surface and appears.
Claims (6)
1. The utility model provides a powder metallurgy material shear strength test fixture which characterized in that: the pressing plate is arranged on the support, the spring is arranged between the pressing plate and the support, the pressing plate, the spring and the support are connected together by bolts, and the pressing column is in rail contact with the support and the pressing column and the pressing plate.
2. The powder metallurgy material shear strength test tool according to claim 1, wherein: and arranging a sample on the pressure plate and the support testing platform.
3. The powder metallurgy material shear strength test tool of claim 1, wherein: and guide rails for the pressure columns to pass through are arranged on the support and the pressure plate.
4. The powder metallurgy material shear strength test tool of claim 1, wherein: and threaded holes are formed in the support and matched with the bolts to fasten the pressing plate.
5. The powder metallurgy material shear strength test tool according to claim 1, wherein: the compression leg is connected with the material testing machine and used for bearing load and transmitting the load to the test sample.
6. The powder metallurgy material shear strength test tool of claim 1, wherein: and a fixed mounting hole is formed in the support and used for fixing the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161297.2U CN218601066U (en) | 2022-08-16 | 2022-08-16 | Shearing strength testing tool for powder metallurgy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161297.2U CN218601066U (en) | 2022-08-16 | 2022-08-16 | Shearing strength testing tool for powder metallurgy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218601066U true CN218601066U (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222161297.2U Active CN218601066U (en) | 2022-08-16 | 2022-08-16 | Shearing strength testing tool for powder metallurgy material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218601066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115372171A (en) * | 2022-08-16 | 2022-11-22 | 中铁隆昌铁路器材有限公司 | Test tool and test method for shear strength of powder metallurgy material |
-
2022
- 2022-08-16 CN CN202222161297.2U patent/CN218601066U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115372171A (en) * | 2022-08-16 | 2022-11-22 | 中铁隆昌铁路器材有限公司 | Test tool and test method for shear strength of powder metallurgy material |
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