CN106092734A - Lever constant load stress corrosion testing device - Google Patents
Lever constant load stress corrosion testing device Download PDFInfo
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- CN106092734A CN106092734A CN201610767003.7A CN201610767003A CN106092734A CN 106092734 A CN106092734 A CN 106092734A CN 201610767003 A CN201610767003 A CN 201610767003A CN 106092734 A CN106092734 A CN 106092734A
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- load
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- plate spring
- stress corrosion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- Environmental & Geological Engineering (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Lever constant load stress corrosion testing device, includes base, and base is provided with support column；Support to be provided with corrosion vessel on the left of column；Corrosion vessel top is connected with one end of crossbeam；Crossbeam is located at support column top；The other end of crossbeam is connected with cross rotating shaft；Cross rotating shaft is connected with screw rod；Screw rod is provided with U-shaped bend-plate spring, and U-shaped bend-plate spring is positioned at above cross rotating shaft, and the top of U-shaped bend-plate spring is provided with little friction washer；Little friction washer is arranged over pre-load nut；Screw rod connects load transducer, is connected with ears joint by monaural joint bottom load transducer, and ears joint is fixed on the base supported on the right side of column；Being loaded by U-shaped bend-plate spring, the load of applying is tested by load transducer, and this load becomes lever ratio with the pulling force on sample.This test device has simple in construction, test accuracy is high, controllability is good, data can the feature of acquisition monitoring.
Description
Technical field
The invention belongs to metal material constant load stress corrosion (cracking) test technical field, be specifically related to lever constant load stress
Corrosion testing apparatus, by crossbeam lever construction, imposed load, can more convenient, more intuitively carry out constant load stress corrosion
Test.
Background technology
In daily production environment, corrosion phenomenon is seen everywhere, and the material failure caused because of corrosion can be found everywhere.Stress
Corrosion refers to that metal or alloy causes the fracture phenomena of metal or alloy under the synergism of corrosive medium and tension.Almost
All of engineering, building, equipment are all threatened by it.Therefore, study of stress corrosion testing is carried out to guaranteeing that material safety makes
With significant.
Lever constant load stress corrosion (cracking) test method, is to utilize spring pre-tightening, persistently to the examination being in corrosion vessel
Sample applies certain load to realize the test method of stress corrosion.What current stress corrosion testing device was more is by O type
Elastic stress circulating application adds constant load, by measuring the load displacement curve of elastic ring in advance, according to the displacement in process of the test
Change, calculates the load being applied on sample.Above-mentioned assay device, test error is relatively big, and specimen size size is also restrained.
Along with the development of industrial technology, improving constantly the corrosion resistance of material, the requirement to corrosion test technique is the most continuous
Improve, be thus necessary on the basis of original assay device to upgrade, to improve test accuracy, meet development
Technology requirement.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, it is an object of the invention to provide lever constant load stress corrosion (cracking) test dress
Put, overcome the deficiency in the design of original stress etching experiment device, there is simple in construction, test accuracy is high, controllability is good, data
Can the feature of acquisition monitoring.
For achieving the above object, the technical solution used in the present invention is: lever constant load stress corrosion testing device, bag
Having included base, base is provided with support column；Support to be provided with corrosion vessel on the left of column；Corrosion vessel top and one end of crossbeam
It is connected；Crossbeam is located at support column top；The other end of crossbeam is connected with cross rotating shaft；Cross rotating shaft is connected with screw rod；Screw rod
Being provided with U-shaped bend-plate spring, U-shaped bend-plate spring is positioned at above cross rotating shaft, and the top of U-shaped bend-plate spring is provided with packing ring；Packing ring
It is arranged over pre-load nut；Screw rod lower end connects load transducer, and load transducer lower end is by monaural joint and ears joint
Being connected, ears joint is fixed on the base supported on the right side of column.
Described support column is triangular structure.
Described support column uses cylinder roller bearing with the revolution position of crossbeam.
Described less friction packing ring is that upper and lower two panels designs structure, and there is thrust ball bearing support centre.
On described U-shaped bend-plate spring, load is set.
The invention has the beneficial effects as follows: the present invention uses torque type test method, crossbeam lever form, uses U-shaped spring
Apply constant load, load transducer is set, so can apply exactly, monitoring test load, compact conformation, sample can be made again
Easy for installation.Owing to the stress corrosion (cracking) test time is longer, in test in order to ensure that sample, only by axle power, not by moment of flexure, is tested
Device must have rotating function.Crossbeam uses cylinder roller bearing with support column connecting portion, it is ensured that crossbeam can freely be put
Dynamic；The connecting portion at sample two ends, uses single ears joint, pin shaft connection structure, and monaural joint arranges oscillating bearing, it is ensured that examination
During sample deformation, it is possible to automatically adjust with the swing of crossbeam, so that sample is only by axle power, not by moment of flexure；U-shaped bend-plate spring is with horizontal
Beam connecting portion, have employed cross rotating shaft, it is ensured that under spring load condition, the swing with crossbeam adjusts automatically, crossbeam be one just
Property component, use dissection type, material therefor is the 45# steel of conditioned process so that sensor is only by axle power, not by moment of flexure；Ten
Word rotating shaft and the position, transfer part of crossbeam, have employed bronze plain bearing to reduce frictional force.Can not have at process of the test middle cross beam
Plastic deformation；The structure of crossbeam makes sample constitute lever form with sensor, may be designed to different lever ratios, for the side of calculating
Just, lever ratio is integer as far as possible, and lever ratio is the biggest, and the load that spring applies is the least, but displacement then becomes big.At U-shaped bent plate bullet
Adding packing ring between spring and pre-load nut, this packing ring particular design to be had, upper and lower two panels, there is thrust ball bearing support centre；
When screw thread pair pretension, owing to pretightning force is bigger, between packing ring and pre-load nut, frictional force is little, this special design energy
Meet requirement, and bigger axial load can be born.Standby jack panel is made up of fine thread with the screw thread pair of sensor connector；Spiral shell
Stricture of vagina is M30 × 1；Fine thread lifting force is big, and self-locking property is good.
This apparatus structure is reasonable, and space is open, simple to operate, easy for installation；U-shaped spring is replaceable, and trial stretch covers
Face is wider；Add load transducer, not only can apply predetermined initial trial load exactly, also can load in monitoring test
Change procedure, greatly increase test accuracy, test data can be gathered simultaneously, and computer networking, for judging material
It is provided that reliable basis.
Accompanying drawing explanation
Fig. 1 is lever constant load stress corrosion testing device of the present invention.
Fig. 2 is lever constant load stress corrosion testing device sketch of the present invention.
Fig. 3 is that the present invention corrodes vessel and sample jointing structural representation.
Fig. 4 is packing ring 9 structural representation of the present invention.
In figure: 1. base；2. corrosion vessel；3. support column；4. oscillating bearing；5. crossbeam；6. cylinder roller bearing is put down；
7.U type bend-plate spring；8. for jack panel；9. packing ring；10. screw rod；11. cross rotating shafts；12. load transducers；13. monaurals connect
Head；14. ears joints.
Detailed description of the invention
Structural principle and operation principle to the present invention are described in further detail below in conjunction with the accompanying drawings.
Seeing Fig. 1,2,3,4, lever constant load stress corrosion testing device, include base 1, base 1 is provided with and props up
Hold column 3；Support on the left of column 3, to be provided with corrosion vessel 2；Corrode one end with crossbeam 5, vessel 2 top by oscillating bearing 4 phase
Even；Crossbeam 5 is located at support column 3 top, is connected by cylinder roller bearing 6；The other end of crossbeam 5 and cross rotating shaft 11 phase
Even；Cross rotating shaft 11 is connected with screw rod 10；Screw rod 10 is provided with U-shaped bend-plate spring 7, and U-shaped bend-plate spring 7 is positioned at cross rotating shaft 11
Top, the top of U-shaped bend-plate spring 7 is provided with packing ring 9；Packing ring 9 is arranged over pre-load nut 8；Screw rod 10 connects load transducer
12, it is connected with ears joint 14 by monaural joint 13 bottom load transducer 12, it is right that ears joint 14 is fixed on support column 3
On the base 1 of side.
Described support column 3 is triangular structure.
Described support column 3 uses cylinder roller bearing 6 to be connected with the revolution position of crossbeam 5；Corrosion vessel 2 top with
Crossbeam 5 connecting portion uses oscillating bearing 4 to connect.
Described packing ring 9 is that upper and lower two panels designs structure, and there is thrust ball bearing support centre.
On described U-shaped bend-plate spring 7, load is set.
Constant load is applied by U-shaped bend-plate spring 7；Crossbeam 5 one end connects sample with single ears joint；Crossbeam 5 other end is even
Connect load transducer 12；Sample and load transducer 12 are all only by axle power, not by moment of flexure；Load transducer is set and can improve test
Precision, gathers test data, is networked directly to controlling test computer.
Using crossbeam lever construction, lever can design different lever ratios as required.
The constant load applied is implemented by U-shaped spring；Can be according to the different requirements of test, Design and Machining different size, difference
The U-shaped spring of rigidity, covers test demand face wider.
It is provided with load transducer, improves test accuracy, make the controllability of test, monitoring property be greatly improved.
Due to crossbeam lever construction, having rotating function, its position, transfer part uses cylinder roller bearing, oscillating bearing, U-shaped bullet
Spring and crossbeam connecting portion use cross pivot structure, with ensure sample and load transducer all only by axle power, not by moment of flexure.
The screw thread pair pitch of imposed load is less, and screw thread is M30 × 1, and self-locking property is good.
Have employed less friction packing ring, the screw thread screw making imposed load is the least with packing ring frictional force.
The operation principle of the present invention is: loaded by U-shaped bend-plate spring, and the load of applying passes through sensor test, this load
Lotus becomes lever ratio with the tensile force on sample.This test device has simple in construction, test accuracy is high, controllability is good, number
According to can the feature of acquisition monitoring.
Claims (5)
1. lever constant load stress corrosion testing device, includes base (1), it is characterised in that base (1) is provided with support
Column (3)；Support that column (3) left side is provided with corrosion vessel (2)；Joint is passed through in one end of corrosion vessel (2) top and crossbeam (5)
Bearing (4) is connected；Crossbeam (5) is located at support column (3) top, is connected by cylinder roller bearing (6)；Another of crossbeam (5)
End is connected with cross rotating shaft (11)；Cross rotating shaft (11) is connected with screw rod (10)；Screw rod (10) is provided with U-shaped bend-plate spring (7),
U-shaped bend-plate spring (7) is positioned at cross rotating shaft (11) top, and the top of U-shaped bend-plate spring (7) is provided with packing ring (9)；On packing ring (9)
Side is provided with pre-load nut (8)；Screw rod (10) connects load transducer (12), and load transducer (12) bottom is by monaural joint
(13) being connected with ears joint (14), ears joint (14) is fixed on base (1).
Lever constant load stress corrosion testing device the most according to claim 1, it is characterised in that described support is stood
Post (3) is triangular structure.
Lever constant load stress corrosion testing device the most according to claim 1, it is characterised in that described support is stood
Post (3) uses cylinder roller bearing (6) to be connected with the revolution position of crossbeam (5).
Lever constant load stress corrosion testing device the most according to claim 1, it is characterised in that described packing ring
(9) being that upper and lower two panels designs structure, there is thrust ball bearing support centre.
Lever constant load stress corrosion testing device the most according to claim 1, it is characterised in that described is U-shaped curved
Flat spring arranges load on (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767003.7A CN106092734A (en) | 2016-08-31 | 2016-08-31 | Lever constant load stress corrosion testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767003.7A CN106092734A (en) | 2016-08-31 | 2016-08-31 | Lever constant load stress corrosion testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106092734A true CN106092734A (en) | 2016-11-09 |
Family
ID=57224476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610767003.7A Pending CN106092734A (en) | 2016-08-31 | 2016-08-31 | Lever constant load stress corrosion testing device |
Country Status (1)
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| CN (1) | CN106092734A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072567A (en) * | 2017-12-08 | 2018-05-25 | 广州特种承压设备检测研究院 | A kind of plastics constant temperature stress etching experiment device and method |
| CN109406268A (en) * | 2018-09-07 | 2019-03-01 | 昆明理工大学 | A kind of ess-strain control formula soil body test for tensile strength device and method |
| CN109827897A (en) * | 2019-03-13 | 2019-05-31 | 南京工程学院 | A kind of slow tensile stress etching experimental provision based on lever |
| CN110095350A (en) * | 2019-04-30 | 2019-08-06 | 北京航天发射技术研究所 | Evaluate the constant load testing stand and test method of transmitting station substrate corrosion susceptibility |
| CN114295509A (en) * | 2021-12-31 | 2022-04-08 | 江苏天鼎检测科技有限公司 | Constant-load corrosion test device |
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| SU775661A1 (en) * | 1976-09-15 | 1980-10-30 | За витель | Method of fretting corrosion |
| SU868453A1 (en) * | 1980-01-14 | 1981-09-30 | Нп0 По Технологии Машиностроения "Цниитмаш" | Device for mounting notched specimen in impact elasticity testing |
| CN2906592Y (en) * | 2006-06-20 | 2007-05-30 | 中国建筑材料科学研究总院 | Transducer-method stress loading device |
| CN202770699U (en) * | 2012-06-29 | 2013-03-06 | 西北核技术研究所 | Lever-type constant-tension loading device |
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| CN103698118A (en) * | 2013-12-14 | 2014-04-02 | 中国航空工业集团公司沈阳发动机设计研究所 | Fatigue testing equipment for rotary micro radial displacement loading |
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| CN104749029A (en) * | 2015-03-23 | 2015-07-01 | 中国船舶重工集团公司第七二五研究所 | Constant-load tensile test device |
| CN105424526A (en) * | 2015-12-29 | 2016-03-23 | 中国兵器科学研究院宁波分院 | Corrosion fatigue environment test device |
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2016
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU775661A1 (en) * | 1976-09-15 | 1980-10-30 | За витель | Method of fretting corrosion |
| SU868453A1 (en) * | 1980-01-14 | 1981-09-30 | Нп0 По Технологии Машиностроения "Цниитмаш" | Device for mounting notched specimen in impact elasticity testing |
| CN2906592Y (en) * | 2006-06-20 | 2007-05-30 | 中国建筑材料科学研究总院 | Transducer-method stress loading device |
| CN202770699U (en) * | 2012-06-29 | 2013-03-06 | 西北核技术研究所 | Lever-type constant-tension loading device |
| CN103091235A (en) * | 2012-12-11 | 2013-05-08 | 龙口市丛林铝材有限公司 | Sample pull stress corrosion tester |
| CN103698118A (en) * | 2013-12-14 | 2014-04-02 | 中国航空工业集团公司沈阳发动机设计研究所 | Fatigue testing equipment for rotary micro radial displacement loading |
| CN104697873A (en) * | 2015-03-06 | 2015-06-10 | 合肥通用机械研究院 | Sulfide stress corrosion cracking testing apparatus |
| CN104749029A (en) * | 2015-03-23 | 2015-07-01 | 中国船舶重工集团公司第七二五研究所 | Constant-load tensile test device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072567A (en) * | 2017-12-08 | 2018-05-25 | 广州特种承压设备检测研究院 | A kind of plastics constant temperature stress etching experiment device and method |
| CN109406268A (en) * | 2018-09-07 | 2019-03-01 | 昆明理工大学 | A kind of ess-strain control formula soil body test for tensile strength device and method |
| CN109827897A (en) * | 2019-03-13 | 2019-05-31 | 南京工程学院 | A kind of slow tensile stress etching experimental provision based on lever |
| CN109827897B (en) * | 2019-03-13 | 2021-06-01 | 南京工程学院 | Slow tensile stress corrosion experiment device based on lever |
| CN110095350A (en) * | 2019-04-30 | 2019-08-06 | 北京航天发射技术研究所 | Evaluate the constant load testing stand and test method of transmitting station substrate corrosion susceptibility |
| CN114295509A (en) * | 2021-12-31 | 2022-04-08 | 江苏天鼎检测科技有限公司 | Constant-load corrosion test device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |
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| RJ01 | Rejection of invention patent application after publication |