CN220367106U - Novel A method test fixture - Google Patents
Novel A method test fixture Download PDFInfo
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- CN220367106U CN220367106U CN202321365380.XU CN202321365380U CN220367106U CN 220367106 U CN220367106 U CN 220367106U CN 202321365380 U CN202321365380 U CN 202321365380U CN 220367106 U CN220367106 U CN 220367106U
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000009662 stress testing Methods 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000007123 defense Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 238000009864 tensile test Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a novel A-method test fixture, which is characterized in that a measuring fixing clamp is respectively fixed on a fixing piece at the top and a fixing piece at the bottom of a stress test clamp, two ends of a vernier caliper are respectively clamped at a U-shaped opening of the measuring fixing clamp for measurement, so that the same measuring position of each time is ensured, meanwhile, a coaxial fixing clamp is respectively sleeved on a fixing shaft and a stress loading shaft, stress is applied to the stress loading, and the vertical defense line of stress application force is ensured all the time. The utility model can avoid the problem of inaccurate data caused by different test points due to different directions of each time of applying stress when the stress value is tested by the stress meter, and ensures the accuracy and the effectiveness of the detection data.
Description
Technical Field
The utility model belongs to the technical field of corrosion testing of metal products, and particularly relates to a novel A-method testing tool.
Background
The tensile test is the most basic and widely applied mechanical property test of materials, and on one hand, the mechanical property index of the tensile test can be used as the basis of engineering design, material evaluation and preferable process, and has important engineering practical significance. On the other hand, the tensile test can reveal the basic mechanical behavior rule of the material and is also a basic test method for researching mechanical properties.
The tensile test is usually carried out under the axial loading condition, and is characterized in that the loading axis of the testing machine is coincident with the axis of the sample, and the load is slowly applied.
And (3) carrying out a tensile test on a material testing machine, wherein the sample deforms until fracture under the stable increase of load, and a series of strength indexes (tensile strength and yield strength) and amount plasticity indexes (elongation after fracture and reduction of area) can be obtained. Creep data can also be obtained from tensile tests performed at high temperatures.
The main test items of the tensile test of the metal material are as follows:
tensile strength (Rm): and the stress corresponding to the maximum force of the sample in the process from the yield to the breaking represents the capability of the material to bear the maximum stress.
Yield strength: when the metal material exhibits a yield phenomenon, a stress point is reached during the test, at which plastic deformation is not increased without increasing the force, the upper yield strength and the lower yield strength should be distinguished, the ability of the material to withstand the plastic deformation is characterized, and for materials without significant upper and lower yield, the yield strength is generally replaced by Rp 0.2.
Upper yield strength (ReH): the highest stress before the specimen yields and the force drops for the first time.
Lower yield strength (ReL): during yield, the lowest stress at the initial transient is not counted.
Non-proportional elongation (Rp) is specified: the stress at which the non-proportional elongation is equal to the specified extensometer gauge length percentage, e.g., rp0.2 represents the stress at which the non-proportional elongation is 0.2%.
Elongation after break (a): elongation after break (a): after the sample is pulled, the percentage of the residual elongation of the post-failure gauge length to the original gauge length characterizes the plasticity of the material.
Area reduction (Z): area reduction (Z): after the sample is pulled, the percent of the ratio of the maximum reduction in cross-sectional area at the constriction to the original cross-sectional area characterizes the plasticity of the material.
Modulus of elasticity: the amount of stress required to produce a unit strain characterizes the amount of resistance of a material to deformation.
The A method test of the steel product is the stress test of the steel in an acidic environment, and the conventional method is to manually apply stress aiming at the current stress test, and simultaneously test the stress value by assisting a stress meter, but the test points are different due to different directions of each application force, so that the data of the time-in-time test is not accurate enough.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a novel A-method test tool which can assist each time stress is applied to the same position, and simultaneously fix test points, so that the tested data are accurate and effective.
The utility model solves the technical problems by adopting the following technical scheme:
the utility model provides a novel A method test fixture, includes base, fixed axle, stress test fixture, measures fixed fixture and coaxial fixed fixture, and wherein fixed axle and test fixture set up on the base, and test fixture sets up in the place ahead of fixed axle, and the fixed axle is located the stress loading axle in the test fixture directly behind, measures the fixed fixture setting on the test fixture, and coaxial fixed fixture connects the stress loading axle in fixed axle and the test fixture.
And moreover, the stress test fixture is cylindrical, fixing pieces are arranged at the top and the bottom of the stress test fixture, one side of each fixing piece is a curved surface, the curved surface is in contact with the stress test fixture, and the other side of each fixing piece is a plane.
And the center of the fixing piece at the top of the stress testing clamp is provided with a stress loading shaft which axially penetrates through the stress testing clamp and the fixing piece at the top, the center of the fixing piece at the bottom of the stress testing clamp is provided with a bottom rotating shaft which axially penetrates through the stress testing clamp and the fixing piece at the top, and one end of the bottom rotating shaft is fixed on the base.
And the stress loading shaft and the shaft center of the bottom rotating shaft are on the same straight line, and a corrosion test tank is arranged between the stress loading shaft and the bottom rotating shaft.
And the fixing piece at the top of the stress test clamp is provided with a measurement fixing clamp, and the fixing piece at the bottom of the stress test clamp is provided with a measurement fixing clamp.
And moreover, the two ends of the measuring fixing clamp are bent downwards, wherein a continuous U-shaped opening is formed in the bent part at one end and the connecting part, a bolt hole is formed in the bent part at the other end, and a bolt is placed in the bolt hole.
And the two ends of the coaxial fixing clamp are respectively provided with an opening in a penetrating way, the diameter of the opening on one side is the diameter of the fixing shaft, and the diameter of the opening on the other side is the diameter of the stress loading shaft.
The utility model has the advantages and positive effects that:
according to the utility model, the measuring fixing clamp is respectively fixed on the fixing piece at the top of the stress testing clamp and the fixing piece at the bottom of the stress testing clamp, and the two ends of the vernier caliper are respectively clamped at the U-shaped opening of the measuring fixing clamp for measurement, so that the same measuring position of each time is ensured, meanwhile, the coaxial fixing clamp is respectively sleeved on the fixing shaft and the stress loading shaft, and then stress is applied to the stress loading, so that the vertical defense line of the stress application force is ensured all the time. The utility model can avoid the problem of inaccurate data caused by different test points due to different directions of each time of applying stress when the stress value is tested by the stress meter, and ensures the accuracy and the effectiveness of the detection data.
Drawings
FIG. 1 is a front view of the present utility model;
FIG. 2 is a side view of the present utility model;
FIG. 3 is a side view of a measurement fixture of the present utility model;
FIG. 4 is a top view of a measurement fixture of the present utility model;
fig. 5 is a top view of the coaxial fixation clamp of the present utility model.
Description of the reference numerals:
1-base, 2-fixed axle, 3-stress test fixture, 4-measure fixed fixture, 5-coaxial fixed fixture, 6-mounting, 7-stress loading axle, 8-bottom pivot, 9-corrosion test jar.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
The utility model provides a novel A method test fixture, as shown in fig. 1 and 2, including base 1, fixed axle 2, stress test fixture 3, measurement fixation clamp 4 and coaxial fixation clamp 5, wherein fixed axle and test fixture set up on the base, and test fixture sets up in the place ahead of fixed axle, and the fixed axle is located the stress loading axle 7 in the test fixture directly behind, and measurement fixation clamp sets up on the test fixture, and the stress loading axle in coaxial fixation clamp connection fixed axle and the test fixture.
The stress test fixture is cylindrical, the top and the bottom of the stress test fixture are provided with fixing pieces 6, one side of each fixing piece is a curved surface, the curved surface is contacted with the stress test fixture, and the other side of each fixing piece is a plane.
As shown in fig. 5, the center of the fixing piece at the top of the stress testing clamp is provided with a stress loading shaft penetrating through the stress testing clamp and the fixing piece at the top in the axial direction, the center of the fixing piece at the bottom of the stress testing clamp is provided with a bottom rotating shaft 8 penetrating through the stress testing clamp and the fixing piece at the top in the axial direction, and one end of the bottom rotating shaft is fixed on the base.
The stress loading shaft and the shaft center of the bottom rotating shaft are on the same straight line, and a corrosion test tank 9 is arranged between the stress loading shaft and the bottom rotating shaft.
The mounting at stress test anchor clamps top is equipped with measures the mounting fixture, and the mounting at stress test anchor clamps bottom is equipped with measures the mounting fixture.
As shown in fig. 3 and 4, the two ends of the measuring fixture are bent downwards, wherein a continuous U-shaped opening is arranged at the bent part of one end and the joint, a bolt hole is arranged at the bent part of the other end, and a bolt is placed in the bolt hole.
And the two ends of the coaxial fixing clamp are respectively provided with an opening in a penetrating way, the diameter of the opening on one side is the diameter of the fixing shaft, and the diameter of the opening on the other side is the diameter of the stress loading shaft.
The application process of the utility model is as follows:
staff fixes the corrosion test jar on stress test fixture to the top is equipped with corresponding measurement fixation clamp with the mounting at stress loading axle contact at the mounting at stress test fixture top and bottom respectively, and slide caliper's both ends card respectively measure at the U type opening part of measurement fixation clamp, have guaranteed that the position of measuring at every turn is the same, overlap coaxial fixation clamp respectively on fixed axle and stress loading axle simultaneously, apply stress to the stress loading again, have guaranteed that the protection line that the stress exerted force is perpendicular all the time, have guaranteed that the accuracy of detection data is effective.
It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the utility model includes, but is not limited to, the examples described in the detailed description, as other embodiments derived from the technical solutions of the utility model by a person skilled in the art are equally within the scope of the utility model.
Claims (7)
1. A novel method test fixture, its characterized in that: including base, fixed axle, stress test fixture, measurement fixation clamp and coaxial fixation clamp, wherein fixed axle and test fixture set up on the base, and test fixture sets up in the place ahead of fixed axle, and the fixed axle is located the stress loading axle in the test fixture directly behind, and measurement fixation clamp sets up on test fixture, and coaxial fixation clamp connects the stress loading axle in fixed axle and the test fixture.
2. The novel a-method test fixture according to claim 1, wherein: the stress test fixture is cylindrical, fixing pieces are arranged at the top and the bottom of the stress test fixture, one side of each fixing piece is a curved surface, the curved surface is in contact with the stress test fixture, and the other side of each fixing piece is a plane.
3. The novel a-method test fixture according to claim 2, wherein: the center of the fixing piece at the top of the stress testing clamp is provided with a stress loading shaft which axially penetrates through the stress testing clamp and the fixing piece at the top, the center of the fixing piece at the bottom of the stress testing clamp is provided with a bottom rotating shaft which axially penetrates through the stress testing clamp and the fixing piece at the top, and one end of the bottom rotating shaft is fixed on the base.
4. A novel a-method test fixture according to claim 3, characterized in that: the stress loading shaft and the shaft center of the bottom rotating shaft are on the same straight line, and a corrosion test tank is arranged between the stress loading shaft and the bottom rotating shaft.
5. A novel a-method test fixture according to claim 3, characterized in that: the mounting at stress test anchor clamps top is equipped with measures the mounting fixture, and the mounting at stress test anchor clamps bottom is equipped with measures the mounting fixture.
6. The novel a-method test fixture according to claim 1, wherein: the two ends of the measuring fixing clamp are bent downwards, a continuous U-shaped opening is formed in the bent part at one end and the connecting part, a bolt hole is formed in the bent part at the other end, and a bolt is placed in the bolt hole.
7. The novel a-method test fixture according to claim 1, wherein: the two ends of the coaxial fixing clamp are respectively provided with an opening in a penetrating way, the diameter of the opening on one side is the diameter of the fixing shaft, and the diameter of the opening on the other side is the diameter of the stress loading shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321365380.XU CN220367106U (en) | 2023-05-31 | 2023-05-31 | Novel A method test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321365380.XU CN220367106U (en) | 2023-05-31 | 2023-05-31 | Novel A method test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220367106U true CN220367106U (en) | 2024-01-19 |
Family
ID=89517613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321365380.XU Active CN220367106U (en) | 2023-05-31 | 2023-05-31 | Novel A method test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220367106U (en) |
-
2023
- 2023-05-31 CN CN202321365380.XU patent/CN220367106U/en active Active
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