CN104807711A - Corrosion fatigue test device - Google Patents
Corrosion fatigue test device Download PDFInfo
- Publication number
- CN104807711A CN104807711A CN201510189811.5A CN201510189811A CN104807711A CN 104807711 A CN104807711 A CN 104807711A CN 201510189811 A CN201510189811 A CN 201510189811A CN 104807711 A CN104807711 A CN 104807711A
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- corrosion
- connection part
- blind hole
- joint pin
- connecting part
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Abstract
The invention discloses a corrosion fatigue test device which comprises an upper connecting part and a lower connecting part, wherein a corrosion cavity is formed in the upper end face of the lower connecting part; a lower axial threaded blind hole is formed in the center of the bottom end face of the corrosion cavity; the axial center line of the lower threaded blind hole and the axial center line of the lower connecting part coincide; the upper connecting part is connected with the upper end of the lower connecting part; after the upper connecting part and the lower connecting part are connected, the corrosion cavity forms a sealed cavity; the axial center lines of the upper connecting part and the lower connecting part coincide; a connecting column is arranged at the center of the upper end face of the upper connecting part in a penetrating manner; the lower end of the connecting column is positioned in the sealed cavity; an upper axial threaded blind hole is formed in the center of the lower end face of the connecting column; the axial center lines of the lower threaded blind hole and the upper threaded blind hole are overlapped; an inlet valve and an outlet valve are formed in the side wall of the corrosion cavity in the lower connecting part.
Description
Technical field
The present invention relates to a kind of corrosion fatigue test apparatus, be in the Corrosion Fatigue Properties under the operating mode of corrosive medium and fatigue load for test material sample simultaneously.
Background technology
In production application, some component to be in corrosive medium and to bear alternate load, this situation with bear compared with alternate load in atmospheric environment, the synergy of alternate load and corrosive atmosphere often significantly reduces the serviceable life of component.Because corrosion fatigue damage mechanism is very complicated, not corrosion and tired simple superposition, so the corrosive nature of material and fatigue behaviour to be isolated the Corrosion Fatigue Properties coming and study and cannot evaluate material.
Summary of the invention
In order to solve problems of the prior art, the object of this invention is to provide the corrosion fatigue test apparatus that a kind of structure is simple, easy to operate.
In order to realize foregoing invention object, the present invention adopts technical scheme as described below:
A kind of corrosion fatigue test apparatus, comprise connection part and lower link portion, the upper end in lower link portion is provided with corrosion chamber, and offer tapped blind hole axially in the bottom face center in corrosion chamber, the longitudinal center line of lower tapped blind hole overlaps with the longitudinal center line in lower link portion; Upper connection part is connected to the upper end in lower link portion, and upper and lower connection part makes described corrosion chamber form an airtight cavity after connecting, the longitudinal center line of upper and lower connection part overlaps, a joint pin is equipped with in the center, upper surface of upper connection part, the lower end of joint pin is positioned at described airtight cavity, the center, lower surface of joint pin offers axially tapped blind hole, and described lower tapped blind hole overlaps with the longitudinal center line of upper tapped blind hole; The corrosion chamber sidewall in described lower link portion is provided with imported valve and outlet valve.
Further, the junction of upper and lower connection part is provided with sealing gasket.
Further, upper connection part is by being set in the O-ring seal on joint pin and the sealing between gland realization with joint pin.
Further, described upper connection part, lower link portion, joint pin and gland are corrosion resistant 00Cr16Ni5Mo martensitic stain less steel.
Owing to adopting technique scheme, the present invention has following superiority:
1, reasonable in design of the present invention, principle are simple, easy to operate, during test, the present invention is installed on fatigue tester, and adds corrosive medium in corrosion chamber, Corrosion Fatigue Properties under the operating mode of corrosive medium and fatigue load can be in by test material sample simultaneously;
2, by arranging import and export valve on the sidewall of corrosion chamber, gas and liquid corrosion medium can be made where necessary to be circulated by import and export valve, guarantee the concentration of medium and the stability of corrosion environment, ensureing the accuracy detected;
3, realize slipper seal by O-ring seal, gland between joint pin and upper connection part, ensure that the leakproofness in corrosion chamber.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1-lower link portion; 2-set nut; 3-outlet valve; 4-joint pin; 5-sealing gasket; The upper connection part of 6-; 7-O-ring seal; 8-gland; 9-imported valve.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
As shown in Figure 1, a kind of corrosion fatigue test apparatus, comprises connection part 6 and lower link portion 1, and the upper end in lower link portion 1 is provided with corrosion chamber, offer tapped blind hole axially in the bottom face center in corrosion chamber, the longitudinal center line of lower tapped blind hole overlaps with the longitudinal center line in lower link portion; Upper connection part 6 is connected to the upper end in lower link portion 1, and upper and lower connection part makes described corrosion chamber form an airtight cavity after connecting, the longitudinal center line of upper and lower connection part overlaps, a joint pin 4 is equipped with in the center, upper surface of upper connection part, the lower end of joint pin 4 is positioned at described airtight cavity, the center, lower surface of joint pin 4 offers axially tapped blind hole, and described lower tapped blind hole overlaps with the longitudinal center line of upper tapped blind hole; The corrosion chamber sidewall in described lower link portion is provided with imported valve 9 and outlet valve 3.
For ensureing the leakproofness in described corrosion chamber, the junction of upper and lower connection part is provided with sealing gasket 5.
The sealing that upper connection part 6 realizes between joint pin by being set in O-ring seal 7 on joint pin 4 and gland 8; The slipper seal of joint pin and upper connection part, further ensure that the leakproofness in corrosion chamber.
Described upper connection part, lower link portion, joint pin and gland all adopt corrosion resistant 00Cr16Ni5Mo martensitic stain less steel.
When needs carry out corrosion fatigue test, the two ends up and down of sample are processed threaded portion, then sample lower end is screwed in the tapped blind hole in lower link portion 1, then by tubular key set nut 2 by fastening for sample lower end; Then adopt tubular key another set nut to be assembled to the threaded portion of sample upper end, then sample upper end is screwed in the tapped blind hole of joint pin 4, ensure that sample and joint pin and lower link portion assemble firmly.If use stable liquid state or solid-state corrosive medium, now can put into corrosive medium to flooding the effective district of sample in corrosion chamber, fitting tight pad, upper connection part, O-ring seal and gland successively subsequently, corrosion chamber is made to be an airtight cavity, can test unit entirety of the present invention be placed on fatigue tester after assembling, be installed on fatigue tester by lower link subordinate end and joint pin upper end, can corrosion fatigue test be carried out.
If use gaseous state corrosive medium or Volatile liquid corrosive medium, first install by said sequence, then opening imported valve makes corrosive medium enter corrosion chamber with certain speed from imported valve, open outlet valve makes unnecessary corrosive medium be discharged in retracting device from outlet valve simultaneously, to keep forming stable corrosive atmosphere in corrosion chamber, improve the accuracy detected.
When test is carried out, the structure of this device can warranty test time corrosive medium can not leak.And when off-test, device itself is not produced when the slipper seal structure between joint pin and upper connection part, gland can ensure sample fracture and damage, ensure that corrosive medium can not leak.Test complete, after emptying corrosive medium, device entirety is pulled down, remove each part successively by the inverted sequence of assembling, and replaceable sample.
In addition, for ensureing test unit of the present invention overall tightness after assembling, what lower link portion adopted is that integral casting process is processed into.
Claims (4)
1. a corrosion fatigue test apparatus, it is characterized in that: comprise connection part and lower link portion, the upper end in lower link portion is provided with corrosion chamber, and offer tapped blind hole axially in the bottom face center in corrosion chamber, the longitudinal center line of lower tapped blind hole overlaps with the longitudinal center line in lower link portion; Upper connection part is connected to the upper end in lower link portion, and upper and lower connection part makes described corrosion chamber form an airtight cavity after connecting, the longitudinal center line of upper and lower connection part overlaps, a joint pin is equipped with in the center, upper surface of upper connection part, the lower end of joint pin is positioned at described airtight cavity, the center, lower surface of joint pin offers axially tapped blind hole, and described lower tapped blind hole overlaps with the longitudinal center line of upper tapped blind hole; The corrosion chamber sidewall in described lower link portion is provided with imported valve and outlet valve.
2. corrosion fatigue test apparatus according to claim 1, is characterized in that: the junction of upper and lower connection part is provided with sealing gasket.
3. corrosion fatigue test apparatus according to claim 1, is characterized in that: upper connection part is by being set in the O-ring seal on joint pin and the sealing between gland realization with joint pin.
4. corrosion fatigue test apparatus according to claim 1, is characterized in that: described upper connection part, lower link portion, joint pin and gland are corrosion resistant 00Cr16Ni5Mo martensitic stain less steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189811.5A CN104807711A (en) | 2015-04-21 | 2015-04-21 | Corrosion fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189811.5A CN104807711A (en) | 2015-04-21 | 2015-04-21 | Corrosion fatigue test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104807711A true CN104807711A (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510189811.5A Pending CN104807711A (en) | 2015-04-21 | 2015-04-21 | Corrosion fatigue test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104807711A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444029A (en) * | 2018-09-30 | 2019-03-08 | 山东省分析测试中心 | A kind of fatigue test environment simulator |
| CN109632523A (en) * | 2019-01-02 | 2019-04-16 | 南京工业大学 | A kind of test method and device for realizing high-temperature molten salt corrosion and creep synergistic effect |
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| CN201993271U (en) * | 2011-04-01 | 2011-09-28 | 华东理工大学 | Environmental box device for slow tension stress corrosion test of rectangular section sample |
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| CN203858173U (en) * | 2014-05-23 | 2014-10-01 | 辽宁忠旺集团有限公司 | Simple device for slow strain stress corrosion test |
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2015
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| CN200972450Y (en) * | 2006-10-26 | 2007-11-07 | 中国船舶重工集团公司第七二五研究所 | Salt air corrosion faigue test device |
| CN201589746U (en) * | 2009-12-01 | 2010-09-22 | 西安航空动力股份有限公司 | Salt mist environment device for fatigue performance test |
| CN102346113A (en) * | 2010-07-30 | 2012-02-08 | 中国科学院金属研究所 | Fatigue test sample clamp with high temperature resistance, high pressure resistance and aqueous corrosion resistance and usage method thereof |
| CN201993271U (en) * | 2011-04-01 | 2011-09-28 | 华东理工大学 | Environmental box device for slow tension stress corrosion test of rectangular section sample |
| CN203758889U (en) * | 2014-01-21 | 2014-08-06 | 中国科学院金属研究所 | Device applied to environment corrosion split test in wet hydrogen sulfide environment |
| CN203688340U (en) * | 2014-02-28 | 2014-07-02 | 中国核动力研究设计院 | Connection structure for pull rod and environmental cabinet of mechanics testing machine |
| CN103926146A (en) * | 2014-04-11 | 2014-07-16 | 西南石油大学 | Constant-load stress corrosion testing device of small test sample and testing method thereof |
| CN203858173U (en) * | 2014-05-23 | 2014-10-01 | 辽宁忠旺集团有限公司 | Simple device for slow strain stress corrosion test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444029A (en) * | 2018-09-30 | 2019-03-08 | 山东省分析测试中心 | A kind of fatigue test environment simulator |
| CN109632523A (en) * | 2019-01-02 | 2019-04-16 | 南京工业大学 | A kind of test method and device for realizing high-temperature molten salt corrosion and creep synergistic effect |
| CN109632523B (en) * | 2019-01-02 | 2021-07-13 | 南京工业大学 | Test method and device for realizing synergistic effect of corrosion and creep of high-temperature molten salt |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150729 |