CN206146735U - A four -point bending sample clamping device for stress corrosion - Google Patents
A four -point bending sample clamping device for stress corrosion Download PDFInfo
- Publication number
- CN206146735U CN206146735U CN201620699114.4U CN201620699114U CN206146735U CN 206146735 U CN206146735 U CN 206146735U CN 201620699114 U CN201620699114 U CN 201620699114U CN 206146735 U CN206146735 U CN 206146735U
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- fixture
- sample
- loading blocks
- loading
- hole
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a four -point bending sample clamping device for stress corrosion belongs to and corrodes test technical field. The utility model discloses a characteristics lie in: anchor clamps are the anti -corrosion anchor clamps of closed rigidity, adopt the load screw rod to exert the load in -process to the sample, and anchor clamps are laid in the base through the locating pin, and anchor clamps do not have relative displacement with the base, adopt the percentage table that is fixed in the base to record the amount of deflection of sample in succession, and sample stress test's in the not enough and loading procedure of present four -point bending anchor clamps rigidity error has been overcome well in the accurate control of the load stress of being convenient for, provides technical guarantee for obtaining reliable stress corrosion assessment result.
Description
Technical field：The utility model is related to a kind of clamping device, and in particular to a kind of 4 points for stress corrosion are curved
Bent sample holding device, belongs to corrosion test technical field.
Background technology
Stress corrosion is the failure phenomenon that material is produced under static stress and the collective effect of corrosion.Stress corrosion cracking is led
The accident of cause often has sudden and unpredictability.Therefore, the stress corrosion evaluation for carrying out material is very necessary.
Four-point bending experiment is main stress corrosion method of testing, and it is mainly by loading and recording corresponding load
Amount of deflection, makes sample uniform stressed in larger region.International standard ISO 7539-2：The corrosion of metal and alloy-stress is rotten
The 4 points of curved clamping devices mentioned in corrosion test are the 4 points of curved specimen holders for generally adopting.
At present, in sample loading procedure, the amount of deflection of sample is by vernier calliper to existing 4 points of curved sample holding devices
What chi was determined.During measurement amount of deflection, tester is difficult to align in the horizontal direction the midpoint of sample, and vertical direction is difficult to
The outer fulcrum amount of deflection of accurate measurement, and can not realize that continuity is measured, cause the error accumulated in measurement process larger, measurement result
Accuracy is poor.Existing clamping device bottom is in off-state, and fixture rigidity can be caused not enough.
The content of the invention
The purpose of this utility model is exactly to overcome the problems of the prior art, there is provided a kind of for the four of stress corrosion
Point bend specimen clamping device, it can overcome the test produced during four-point bending sample holding device stress loading to miss
Difference, and improve the rigidity of four-point bending fixture.
For achieving the above object, the present invention is employed the following technical solutions：
A kind of four-point bending sample holding device and loading method for stress corrosion, it is characterised in that mainly include：
Fixture, base, loading blocks, sample, dial gauge, ceramic rod, percentage timing collet, load screw rod.
Described fixture includes screwed hole, fixing hole, cavity, two semicircle circular holes and screw hole, and two fixtures half are round
Distance is 100mm between the center of circle in hole, and fixture is closed structure, and material adopts Hastelloy.
The loading screw rod is contacted through the screwed hole of fixture with loading blocks.
Described loading blocks bottom symmetrical distribution arranges two loading blocks semicircle circular holes, the circle of two loading blocks semicircle circular holes
In the heart distance is 50mm, and ceramic rod is respectively placed in the semicircle circular hole of loading blocks and fixture, and is contacted with sample.
Described specimen cross section is rectangle, width for B be 10～20mm, length be straight band that L is 106～110mm.
Described dial gauge is placed in percentage timing collet, and the center line of the thimble of dial gauge is vertical with sample working face.
Two alignment pins are set in described base, and alignment pin makes fixture be horizontally fixed on bottom through the fixing hole of fixture
On seat.
Described fixture and the semicircle circular hole of the semicircle circular hole, loading blocks and loading blocks of fixture, base alignment pin with
Heart line A-A is centrosymmetric.
The utility model is allowed to have compared with prior art the more positive effect be due to taking above-mentioned technology：
1st, guarantee that four-point bending sample loading stress is accurate.
2nd, the rigidity increase of four-point bending sample holding device.
Description of the drawings
Fig. 1 is 4 points of curved blessing device installation diagrams.
7th, sample, 8, loading blocks, 9, ceramic rod, 10, dial gauge, 11, percentage timing collet, 12, thimble, 13, base,
14th, pin, 15, loading screw rod, 16, loading blocks semicircle circular hole.
Fig. 2 is 4 angle coupling tool schematic diagrames.
Wherein in figure：1st, screwed hole, 2, fixture, 3, cavity, 4, fixing hole, 5, fixture semicircle circular hole, 6, screw hole
Fig. 3 is sample schematic diagram.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of four-point bending sample holding device and loading method for stress corrosion, it is characterised in that mainly include：
Fixture (2), base (13), loading blocks (8), sample (7), dial gauge (10), ceramic rod (9), percentage timing collet (11), loading
Screw rod (15)；
As shown in Figure 1：Described fixture (2) includes screwed hole (1), fixing hole (4), cavity (3), two semicircle circular holes
(5) and screw hole (6), distance is 100mm between the center of circle of two fixtures semicircle circular hole (5), and fixture (2) is closed structure, material
Matter adopts Hastelloy；
As shown in Figure 1：Loading screw rod (15) contacts through the screwed hole (1) of fixture (2) with loading blocks (8)；
As shown in Figure 1：Described loading blocks (8) bottom symmetrical distribution two loading blocks semicircle circular hole (16) of setting, two
Distance is 50mm between the center of circle of loading blocks semicircle circular hole (16), and ceramic rod (9) is respectively placed in the half of loading blocks (8) and fixture (2)
In round hole (5), and contact with sample (7)；
As shown in Figure 3：Described sample (7) rectangular cross-section, width be B be 10～20mm, length be L be 106～
The straight band of 110mm；
As shown in Figure 1：Described dial gauge (10) is placed in percentage timing collet (11), and the thimble of dial gauge (10)
(12) center line is vertical with sample (7) working face；
As shown in Figure 1：Two alignment pins (14) are set in described base (13), and alignment pin (14) is through fixture (2)
Fixing hole (4), makes fixture (2) be horizontally fixed on base (13)；
As shown in Figure 2：Described fixture (2) and the semicircle circular hole (5) of fixture (2), loading blocks (8) and loading blocks (8)
Semicircle circular hole (16), the alignment pin (14) of base (13) are centrosymmetric with center line A-A.
Claims (1)
1. a kind of four-point bending sample holding device for stress corrosion, it is characterised in that mainly include：Fixture (2), base
(13), loading blocks (8), sample (7), dial gauge (10), ceramic rod (9), percentage timing collet (11), loading screw rod (15)；
Described fixture (2) includes screwed hole (1), fixing hole (4), cavity (3), two semicircle circular holes (5) and screw hole (6),
Distance is 100mm between the center of circle of two fixtures semicircle circular hole (5), and fixture (2) is closed structure, and material adopts Hastelloy；
Loading screw rod (15) contacts through the screwed hole (1) of fixture (2) with loading blocks (8)；
Described loading blocks (8) bottom symmetrical distribution arranges two loading blocks semicircle circular hole (16), two loading blocks semicircle circular holes
(16) distance is 50mm between the center of circle, and ceramic rod (9) is respectively placed in the semicircle circular hole (5) of loading blocks (8) and fixture (2), and
Contact with sample (7)；
Described sample (7) rectangular cross-section, width for B be 10～20mm, length be straight band that L is 106～110mm；
Described dial gauge (10) is placed in percentage timing collet (11), and the center line and sample of the thimble (12) of dial gauge (10)
(7) working face is vertical；
Two alignment pins (14) are set in described base (13), and alignment pin (14) makes folder through the fixing hole (4) of fixture (2)
Tool (2) is horizontally fixed on base (13)；
Described fixture (2) and semicircle circular hole (16), the bottom of the semicircle circular hole (5), loading blocks (8) and loading blocks (8) of fixture (2)
The alignment pin (14) of seat (13) is centrosymmetric with center line A-A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699114.4U CN206146735U (en) | 2016-07-01 | 2016-07-01 | A four -point bending sample clamping device for stress corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699114.4U CN206146735U (en) | 2016-07-01 | 2016-07-01 | A four -point bending sample clamping device for stress corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206146735U true CN206146735U (en) | 2017-05-03 |
Family
ID=58616425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620699114.4U Expired - Fee Related CN206146735U (en) | 2016-07-01 | 2016-07-01 | A four -point bending sample clamping device for stress corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206146735U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198198A (en) * | 2016-07-01 | 2016-12-07 | 西南石油大学 | A kind of four-point bending sample holding device for stress corrosion and loading method |
| WO2022077527A1 (en) * | 2020-10-13 | 2022-04-21 | 江苏仕邦柔性电子研究院有限公司 | Apparatus for testing bending resistance of flexible electronic product |
-
2016
- 2016-07-01 CN CN201620699114.4U patent/CN206146735U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198198A (en) * | 2016-07-01 | 2016-12-07 | 西南石油大学 | A kind of four-point bending sample holding device for stress corrosion and loading method |
| CN106198198B (en) * | 2016-07-01 | 2019-01-18 | 西南石油大学 | A kind of four-point bending sample holding device and loading method for stress corrosion |
| WO2022077527A1 (en) * | 2020-10-13 | 2022-04-21 | 江苏仕邦柔性电子研究院有限公司 | Apparatus for testing bending resistance of flexible electronic product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20190701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |