CN205138865U - Sample of test stress corrosion cracking speed - Google Patents
Sample of test stress corrosion cracking speed Download PDFInfo
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- CN205138865U CN205138865U CN201520970687.1U CN201520970687U CN205138865U CN 205138865 U CN205138865 U CN 205138865U CN 201520970687 U CN201520970687 U CN 201520970687U CN 205138865 U CN205138865 U CN 205138865U
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Abstract
The utility model discloses a sample of test stress corrosion cracking speed, including the sample body, levogyration crackle load loading screw rod and dextrorotation crackle load loading screw rod, the shape of sample body is the cuboid, the vertical fatigue crack breach that is equipped with in sample body upper portion, the fatigue crack breach is including the prefabricated fracture breach that from top to bottom sets gradually, prefabricated breach of fatigue crack and prefabricated fatigue crack, sample body upper portion level is equipped with left -handed screw hole and right -handed thread hole, left -handed screw hole and right -handed thread pore pair are called to set up in the prefabricated fracture breach left and right sides, levogyration crackle load loading screw rod and left -handed screw hole screw -thread fit, dextrorotation crackle load loading screw rod and right -handed thread hole screw -thread fit, levogyration crackle load loading screw rod right -hand member is equipped with first loading section, dextrorotation crackle load loading screw rod left end is equipped with second loading section. The utility model discloses simple structure, realization convenience and with low costs, experimental convenient operation, test efficiency is high, and the practicality is strong, excellent in use effect.
Description
Technical field
The utility model relates to a kind of sample testing nickel-base alloy and austenitic stainless steel stress corrosion crack speed under High Temperature High Pressure water environment, especially relates to a kind of sample of test stress corrosion cracking speed.
Background technology
Along with the development of society and the mankind more and more pay attention to the strategic height of environmental protection in the new period, the demand of clean energy resource is also increasing.China is as developing country maximum in the world and energy resource consumption state maximum in the world, the Chinese government and the people pay much attention to this clean energy resource of nuclear energy, and though China is nuclear power industry late comer, but no matter be old brand nuclear power power or emerging market, nowadays all cannot have ignored Chinese institute role.From Asia, Africa, Latin America, South America and even Europe, China and nuclear power are walked out and are won a series of victories.
At present, nuclear power proportion in developed country's energy is very large, and China is as power consumption big country, government pays much attention to again development nuclear energy, but from current actual conditions, the occupation rate of nuclear energy in the energy is also very little, therefore shoulder heavy responsibilities on the road of China's development nuclear energy.As everyone knows, the most important factor affecting nuclear power developing is Nuclear Safety, because nickel-base alloy and austenitic stainless steel have extraordinary mechanical property and high temperature resisting corrosion resisting performance in High Temperature High Pressure water environment, so select this type of material in a large number in the key structure of nuclear power station.Welding is used in nuclear power station steam generator and Nuclear Safety end as the tailor in industry in a large number, and the High Temperature High Pressure water environment of nuclear power station can impel these crucial welding structural elements to crack and defect, these crackles and defect can produce cracking phenomena under the effect of stress corrosion environment, these crackles will constantly be expanded in time under corrosion and high temperature and high pressure environment, finally can cause nuclear power station key structure and equipment fracture or damage.Therefore, austenitic stainless steel and the nickel-bass alloy material stress corrosion crack problem under High Temperature High Pressure water environment is one of key issue of nuclear power structure and the military service of equipment long-term safety.
In order to study nuclear power critical material stress corrosion crack under nuclear power High Temperature High Pressure water environment, employing standard compact tensile specimen carries out simulated experiment usually both at home and abroad.The Service Environment of this experiment syncaryon electric material uses the test of rate determination to be a newer direction, more existing similar techniques, general employing standard compact tensile specimen, size is larger, cupping machine is needed to carry out tensile loads, the rate test of material stress corrosion cracking is subject to testing equipment restriction, and the complicated and somewhat expensive of testing equipment, test efficiency is low.Therefore, need to develop a kind of easy convenient small compact tensile sample loaded, split sharp stress corrosion crack state for test, the universal and nuclear power station key structure residual life evaluation tested for splitting sharp stress corrosion crack state verification provides new way.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, provides a kind of sample of test stress corrosion cracking speed, and its structure is simple, realization is convenient and cost is low, test operation is convenient, and test efficiency is high, practical, result of use is good, is convenient to promote the use of.
For achieving the above object, the technical solution adopted in the utility model is: a kind of sample of test stress corrosion cracking speed, it is characterized in that: comprise sample body, left-handed load and crack loads screw rod and dextrorotation load and crack loads screw rod, the shape of described sample body is rectangular parallelepiped, the Upper vertical of described sample body is provided with fatigue crack breach, described fatigue crack breach comprises the prefabricated cracking breach set gradually from top to bottom, fatigue crack prefabrication breach and prefabricating fatigue crack, the upper level of described sample body is provided with left handed threaded hole and right-hand thread hole, described left handed threaded hole and described right-hand thread hole are symmetricly set on the left and right sides of prefabricated cracking breach, the axis in described left handed threaded hole and described right-hand thread hole is positioned on a horizontal line, described left-handed load and crack loads screw rod and described left handed threaded hole threaded engagement, described dextrorotation load and crack loads screw rod and described right-hand thread hole threaded engagement, the right-hand member that described left-handed load and crack loads screw rod is provided with the first loaded segment, the left end that described dextrorotation load and crack loads screw rod is provided with the second loaded segment.
The sample of above-mentioned a kind of test stress corrosion cracking speed, it is characterized in that: the left upper portion of described sample body is provided with the first prefabricating fatigue crack stretchable holes, the right upper portion of described sample body is provided with the second prefabricating fatigue crack stretchable holes, described first prefabricating fatigue crack stretchable holes communicates with described left handed threaded hole, described second prefabricating fatigue crack stretchable holes communicates with described right-hand thread hole, and described first prefabricating fatigue crack stretchable holes and the second prefabricating fatigue crack stretchable holes are symmetrical arranged.
The sample of above-mentioned a kind of test stress corrosion cracking speed, it is characterized in that: described first prefabricating fatigue crack stretchable holes and the second prefabricating fatigue crack stretchable holes are circular hole, the radius of described first prefabricating fatigue crack stretchable holes and the second prefabricating fatigue crack stretchable holes is 3.125mm, and the centre distance of described first prefabricating fatigue crack stretchable holes and the second prefabricating fatigue crack stretchable holes is 19mm.
The sample of above-mentioned a kind of test stress corrosion cracking speed, is characterized in that: the left end that described left-handed load and crack loads screw rod is provided with the 3rd loaded segment, and the right-hand member that described dextrorotation load and crack loads screw rod is provided with the 4th loaded segment.
The sample of above-mentioned a kind of test stress corrosion cracking speed, is characterized in that: the shape of described first loaded segment, the second loaded segment, the 3rd loaded segment and the 4th loaded segment is regular hexahedron.
The sample of above-mentioned a kind of test stress corrosion cracking speed, it is characterized in that: the end face circumscribed circle diameter of described first loaded segment, the second loaded segment, the 3rd loaded segment and the 4th loaded segment is r, described left-handed load and crack loads screw rod and dextrorotation load and crack loads through being d in screw flight, and described r and d is equal.
The sample of above-mentioned a kind of test stress corrosion cracking speed, it is characterized in that: the length of described first loaded segment and the second loaded segment is 1.25mm, the length that described left-handed load and crack loads screw rod and dextrorotation load and crack loading screw rod is 14mm ~ 18mm, and the length of described 3rd loaded segment and the 4th loaded segment is 3mm ~ 5mm.
The sample of above-mentioned a kind of test stress corrosion cracking speed, is characterized in that: the length a of described sample body is 31.25mm, and the width b of described sample body is 30mm, and the height h of described sample body is 12.5mm.
The sample of above-mentioned a kind of test stress corrosion cracking speed, is characterized in that: the length of described fatigue crack breach is 16.75mm.
The utility model compared with prior art has the following advantages:
1, the utility model structure is simple, reasonable in design, realization is convenient and cost is low.
2, the utility model uses simple to operate, adopts a torque wrench to clamp the first loaded segment and the second loaded segment simultaneously, exerts a force counterclockwise to the first loaded segment and the second loaded segment simultaneously, can realize applying tension to sample and sample is opened to two ends; Exert a force clockwise in the first loaded segment and the second loaded segment, can realize that compressive stress is applied to sample and make sample close to two ends, in process of the test, be reached the mensuration of loading force by torque wrench.Same, also can adopt that two torque wrench apply to draw to sample in the 3rd loaded segment and the 4th loaded segment, compressive stress, identical effect can be realized.
3, adopt the utility model that the test splitting sharp stress corrosion crack state can be made more convenient, size of the present utility model is little, the test of multiple sample can be carried out in high temperature and high pressure environment, improve test efficiency, save the time and can contrast effect be reached, effectively can improve the accuracy of test result.
4, the utility model and existing sample Crack-area in stress corrosion state verification is tested has identical structure and stress corrosion environmental characteristic, and therefore test result of the present utility model can carry out analogy analysis with the test result of existing sample; But the structure of the utility model sample simplifies greatly, operate very convenient.
5, the utility model carries load and crack and loads screw rod, in whole process of the test, do not need other large-scale stretchers such as cupping machine, and size of the present utility model is little, the test of multiple sample once in experiment, can be carried out, greatly save test period, improve test efficiency.
6, the utility model can provide new way for the universal of stress corrosion crack state verification test and nuclear power station key structure residual life evaluation, and practical, result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the structural representation after the utility model removes left-handed load and crack loading screw rod and dextrorotation load and crack loading screw rod.
Fig. 5 is the structural representation that the left-handed load and crack of the utility model loads screw rod.
Fig. 6 is the structural representation that the utility model dextrorotation load and crack loads screw rod.
Description of reference numerals:
1-sample body; 2-1-left-handed load and crack loads screw rod;
2-2-dextrorotation load and crack loads screw rod; 2-3-the first loaded segment;
2-4-the second loaded segment; 2-5-the 3rd loaded segment; 2-6-the 4th loaded segment;
3-1-prefabricated cracking breach; 3-2-fatigue crack prefabrication breach; 3-3-prefabricating fatigue crack;
4-the first prefabricating fatigue crack stretchable holes; 5-the second prefabricating fatigue crack stretchable holes.
Embodiment
As shown in Figures 1 to 6, the utility model comprises sample body 1, left-handed load and crack loads screw rod 2-1 and dextrorotation load and crack loads screw rod 2-2, the shape of described sample body 1 is rectangular parallelepiped, the Upper vertical of described sample body 1 is provided with fatigue crack breach, described fatigue crack breach comprises the prefabricated cracking breach 3-1 set gradually from top to bottom, fatigue crack prefabrication breach 3-2 and prefabricating fatigue crack 3-3, the upper level of described sample body 1 is provided with left handed threaded hole and right-hand thread hole, described left handed threaded hole and described right-hand thread hole are symmetricly set on the left and right sides of prefabricated cracking breach 3-1, the axis in described left handed threaded hole and described right-hand thread hole is positioned on a horizontal line, described left-handed load and crack loads screw rod 2-1 and described left handed threaded hole threaded engagement, described dextrorotation load and crack loads screw rod 2-2 and described right-hand thread hole threaded engagement, the right-hand member that described left-handed load and crack loads screw rod 2-1 is provided with the first loaded segment 2-3, the left end that described dextrorotation load and crack loads screw rod 2-2 is provided with the second loaded segment 2-4.
As shown in Figure 1 and Figure 4, the left upper portion of described sample body 1 is provided with the first prefabricating fatigue crack stretchable holes 4, the right upper portion of described sample body 1 is provided with the second prefabricating fatigue crack stretchable holes 5, described first prefabricating fatigue crack stretchable holes 4 communicates with described left handed threaded hole, described second prefabricating fatigue crack stretchable holes 5 communicates with described right-hand thread hole, and described first prefabricating fatigue crack stretchable holes 4 and the second prefabricating fatigue crack stretchable holes 5 are symmetrical arranged.
In the present embodiment, described first prefabricating fatigue crack stretchable holes 4 and the second prefabricating fatigue crack stretchable holes 5 are circular hole, the radius of described first prefabricating fatigue crack stretchable holes 4 and the second prefabricating fatigue crack stretchable holes 5 is 3.125mm, and the centre distance of described first prefabricating fatigue crack stretchable holes 4 and the second prefabricating fatigue crack stretchable holes 5 is 19mm.
As shown in Fig. 1, Fig. 5 and Fig. 6, the left end that described left-handed load and crack loads screw rod 2-1 is provided with the 3rd loaded segment 2-5, and the right-hand member that described dextrorotation load and crack loads screw rod 2-2 is provided with the 4th loaded segment 2-6.
In the present embodiment, the shape of described first loaded segment 2-3, the second loaded segment 2-4, the 3rd loaded segment 2-5 and the 4th loaded segment 2-6 is regular hexahedron.
In the present embodiment, the end face circumscribed circle diameter of described first loaded segment 2-3, the second loaded segment 2-4, the 3rd loaded segment 2-5 and the 4th loaded segment 2-6 is r, described left-handed load and crack loads screw rod 2-1 and dextrorotation load and crack loads through being d in the screw thread of screw rod 2-2, and described r and d is equal.
In the present embodiment, the length of described first loaded segment 2-3 and the second loaded segment 2-4 is 1.25mm, the length that described left-handed load and crack loads screw rod 2-1 and dextrorotation load and crack loading screw rod 2-2 is 14mm ~ 18mm, and the length of described 3rd loaded segment 2-5 and the 4th loaded segment 2-6 is 3mm ~ 5mm.
In the present embodiment, the length a of described sample body 1 is 31.25mm, and the width b of described sample body 1 is 30mm, and the height h of described sample body 1 is 12.5mm.
In the present embodiment, the length of described fatigue crack breach is 16.75mm.
Principle of work of the present utility model is: during use, adopt a torque wrench to clamp the first loaded segment 2-3 and the second loaded segment 2-4 simultaneously, exert a force counterclockwise to the first loaded segment 2-3 and the second loaded segment 2-4 simultaneously, can realize that tension is applied to sample and sample is opened to two ends; Exert a force clockwise at the first loaded segment 2-3 and the second loaded segment 2-4, can realize that compressive stress is applied to sample and make sample close to two ends, in process of the test, be reached the mensuration of loading force by torque wrench.Same, also can adopt that two torque wrench apply to draw to sample at the 3rd loaded segment 2-5 and the 4th loaded segment 2-6, compressive stress, identical effect can be realized.Adopt the utility model that the test splitting sharp stress corrosion crack state can be made more convenient, size of the present utility model is little, the test of multiple sample can be carried out in high temperature and high pressure environment, improve test efficiency, save the time and can contrast effect be reached, effectively can improve the accuracy of test result.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solutions of the utility model.
Claims (9)
1. the sample of a test stress corrosion cracking speed, it is characterized in that: comprise sample body (1), left-handed load and crack loads screw rod (2-1) and dextrorotation load and crack loads screw rod (2-2), the shape of described sample body (1) is rectangular parallelepiped, the Upper vertical of described sample body (1) is provided with fatigue crack breach, described fatigue crack breach comprises the prefabricated cracking breach (3-1) set gradually from top to bottom, fatigue crack prefabrication breach (3-2) and prefabricating fatigue crack (3-3), the upper level of described sample body (1) is provided with left handed threaded hole and right-hand thread hole, described left handed threaded hole and described right-hand thread hole are symmetricly set on the left and right sides of prefabricated cracking breach (3-1), the axis in described left handed threaded hole and described right-hand thread hole is positioned on a horizontal line, described left-handed load and crack loads screw rod (2-1) and described left handed threaded hole threaded engagement, described dextrorotation load and crack loads screw rod (2-2) and described right-hand thread hole threaded engagement, the right-hand member that described left-handed load and crack loads screw rod (2-1) is provided with the first loaded segment (2-3), the left end that described dextrorotation load and crack loads screw rod (2-2) is provided with the second loaded segment (2-4).
2. according to the sample of a kind of test stress corrosion cracking speed according to claim 1, it is characterized in that: the left upper portion of described sample body (1) is provided with the first prefabricating fatigue crack stretchable holes (4), the right upper portion of described sample body (1) is provided with the second prefabricating fatigue crack stretchable holes (5), described first prefabricating fatigue crack stretchable holes (4) communicates with described left handed threaded hole, described second prefabricating fatigue crack stretchable holes (5) communicates with described right-hand thread hole, described first prefabricating fatigue crack stretchable holes (4) and the second prefabricating fatigue crack stretchable holes (5) are symmetrical arranged.
3. according to the sample of a kind of test stress corrosion cracking speed according to claim 2, it is characterized in that: described first prefabricating fatigue crack stretchable holes (4) and the second prefabricating fatigue crack stretchable holes (5) are circular hole, the radius of described first prefabricating fatigue crack stretchable holes (4) and the second prefabricating fatigue crack stretchable holes (5) is 3.125mm, and the centre distance of described first prefabricating fatigue crack stretchable holes (4) and the second prefabricating fatigue crack stretchable holes (5) is 19mm.
4. according to the sample of a kind of test stress corrosion cracking speed described in claim 1,2 or 3, it is characterized in that: the left end that described left-handed load and crack loads screw rod (2-1) is provided with the 3rd loaded segment (2-5), and the right-hand member that described dextrorotation load and crack loads screw rod (2-2) is provided with the 4th loaded segment (2-6).
5. according to the sample of a kind of test stress corrosion cracking speed according to claim 4, it is characterized in that: the shape of described first loaded segment (2-3), the second loaded segment (2-4), the 3rd loaded segment (2-5) and the 4th loaded segment (2-6) is regular hexahedron.
6. according to the sample of a kind of test stress corrosion cracking speed according to claim 5, it is characterized in that: the end face circumscribed circle diameter of described first loaded segment (2-3), the second loaded segment (2-4), the 3rd loaded segment (2-5) and the 4th loaded segment (2-6) is r, described left-handed load and crack loads screw rod (2-1) and dextrorotation load and crack loads through being d in the screw thread of screw rod (2-2), and described r and d is equal.
7. according to the sample of a kind of test stress corrosion cracking speed according to claim 4, it is characterized in that: the length of described first loaded segment (2-3) and the second loaded segment (2-4) is 1.25mm, the length that described left-handed load and crack loads screw rod (2-1) and dextrorotation load and crack loading screw rod (2-2) is 14mm ~ 18mm, and the length of described 3rd loaded segment (2-5) and the 4th loaded segment (2-6) is 3mm ~ 5mm.
8. according to the sample of a kind of test stress corrosion cracking speed described in claim 1,2 or 3, it is characterized in that: the length a of described sample body (1) is 31.25mm, the width b of described sample body (1) is 30mm, and the height h of described sample body (1) is 12.5mm.
9. according to the sample of a kind of test stress corrosion cracking speed described in claim 1,2 or 3, it is characterized in that: the length of described fatigue crack breach is 16.75mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970687.1U CN205138865U (en) | 2015-11-28 | 2015-11-28 | Sample of test stress corrosion cracking speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970687.1U CN205138865U (en) | 2015-11-28 | 2015-11-28 | Sample of test stress corrosion cracking speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205138865U true CN205138865U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520970687.1U Expired - Fee Related CN205138865U (en) | 2015-11-28 | 2015-11-28 | Sample of test stress corrosion cracking speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205138865U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287038A (en) * | 2017-10-19 | 2018-07-17 | 北京理工大学 | Residual stress gradient is distributed constant value test block design and application method |
| CN110174309A (en) * | 2019-06-12 | 2019-08-27 | 宁波大学 | The sample design method of metal material fracture partial melting under fatigue load |
| CN111175158A (en) * | 2020-02-10 | 2020-05-19 | 天津大学 | Open structure corner fatigue and crack propagation measurement sample |
-
2015
- 2015-11-28 CN CN201520970687.1U patent/CN205138865U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287038A (en) * | 2017-10-19 | 2018-07-17 | 北京理工大学 | Residual stress gradient is distributed constant value test block design and application method |
| CN108287038B (en) * | 2017-10-19 | 2020-09-22 | 北京理工大学 | Residual stress gradient distribution fixed value test block |
| CN110174309A (en) * | 2019-06-12 | 2019-08-27 | 宁波大学 | The sample design method of metal material fracture partial melting under fatigue load |
| CN110174309B (en) * | 2019-06-12 | 2022-02-22 | 宁波大学 | Sample design method for local melting of metal material fracture under fatigue load |
| CN111175158A (en) * | 2020-02-10 | 2020-05-19 | 天津大学 | Open structure corner fatigue and crack propagation measurement sample |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20161128 |