CN106908288A - A kind of device for preparing the U-shaped sample of stress corrosion - Google Patents
A kind of device for preparing the U-shaped sample of stress corrosion Download PDFInfo
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- CN106908288A CN106908288A CN201710004917.2A CN201710004917A CN106908288A CN 106908288 A CN106908288 A CN 106908288A CN 201710004917 A CN201710004917 A CN 201710004917A CN 106908288 A CN106908288 A CN 106908288A
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- sliding block
- vernier
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- dovetail groove
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- 230000007797 corrosion Effects 0.000 title claims abstract description 17
- 238000005260 corrosion Methods 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 18
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 5
- 238000003556 assay Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000011056 performance test Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to metal material mechanics technical field of performance test, it is related to a kind of device for preparing the U-shaped sample of stress corrosion.Device is made up of framework, pressurizing unit, roller pressing mold and transmission device.The present invention is on the premise of national standard (GB) and the requirement of civil aviaton's standard (MH) iso-stress Corrosion standards is met, there is provided a kind of U-shaped sample preparation device of innovation, the accuracy of alignment of sample, measurable pressure head extrusion and displacement and plate stop position in mark during by the preparation precision for taking controllable sample arc diameter, controllable extruding, the preparation of different size sample can be met and the sample arc section five Technologies measure of type quality higher can be obtained and reach high efficiency, prepare the purpose of U-shaped stress corrosion sample in high precision.The preparation precision of Control Assay arc diameter is less than 0.2mm, by adjusting the precision of roller inner edge spacing, the preparation precision of Control Assay arc diameter；The position of vernier positioning sliding block is adjusted according to specimen length, it is ensured that sample accuracy of alignment higher.
Description
Technical field
The invention belongs to metal material mechanics technical field of performance test, it is related to a kind of U-shaped sample of stress corrosion for preparing
Device.
Background technology
Stress corrosion refers to the destruction that metal causes in corrosive medium under action of pulling stress.At present, main stress
Corrosion tests include permanent deformation test, constant load experiment, slow strain rate test and fracture mechanics test.Constant strain method is
Make sample that certain deformation, the method that SCC (stress corrosion cracking) sensitiveness to it in experimental enviroment is evaluated to occur.
Specimen shape that this method is used and means are a lot, and conventional having is U-shaped, C-shaped ring, camber beam sample etc., typically using fixture
Or bolt fixes the deformation of sample with loading stress.The advantage of this method is compact simplicity, economy, sample, is suitable to limited
Prolonged batch test is carried out in the container in space.Currently, on the one hand, stress corrosion (cracking) test standard is to sample preparation device
It is required that mostly not enough clearly, the sample mass for causing different personnel to prepare is uneven；On the other hand, different tests standard is used
U-shaped sample preparation device be not quite similar, lack a kind of U-shaped sample preparation device for being common to existing testing standard.
The content of the invention
The purpose of the present invention：Propose that a kind of metal stresses that improve corrode the device that U-shaped sample prepares quality, the device can
Meet the requirement that different metal stress corrosion (cracking) test standard is prepared to sample.
Technical solution of the invention：
Device is made up of framework, pressurizing unit, roller pressing mold and transmission device：The framework includes top board, side plate and bottom
Plate, base plate is provided with dovetail groove, " V " font semicircle bearing being provided with base plate, and arc radius are 8mm-16mm；Side plate is placed in
Base plate two ends are simultaneously fixed, and dovetail groove is equipped with the inside of two side plates, and mounting of roof plate is in side plate upper surface and fixes, and is opened on top board
There is through hole；The pressurizing unit includes handle, middle plate, shop bolt, screw rod, threaded sleeve and pressure head, and threaded sleeve is fixed on
On the upper surface of top board, screw rod passes through threaded sleeve and top board, and through the circular hole of screw rod upper end, screw rod lower end is provided with circular arc to handle
Shape rotating gravure, screw rod lower end plate center hole and is positioned in entering by shop bolt, and the dovetail groove of middle plate and side plate coordinates
And slided along dovetail groove, it is provided with groove at middle plate lower surface center hole, groove fit and fixation on pressure head and middle plate；It is described
Roller pressing mold includes sliding block, vernier positioning sliding block and roller, and sliding block is divided into left and right two, and sliding block is provided with slide rail, and slide rail is placed in
In the dovetail groove of base plate, and slided along dovetail groove, roller two ends are installed bearing and are assemblied in sliding block circular hole, on the sliding block in left side
Surface is provided with dovetail groove, and vernier positioning sliding block is matched somebody with somebody by dovetail groove and sliding block and merged along dovetail groove slip；The transmission device bag
Left-handed leading screw, dextrorotation leading screw, shaft coupling, runner and retaining mechanism are included, left-handed leading screw and dextrorotation leading screw pass through side plate and sliding block simultaneously
Connected by shaft coupling, left-handed leading screw and dextrorotation leading screw are coordinated by bearing with side plate, runner, dextrorotation are installed in left-handed leading screw outside
Installation locking mechanism on the outside of leading screw.
Described side plate is provided with data scale, and position corresponding with data scale is provided with mark pointer on middle plate.
Described base plate and the sliding block on right side are provided with vernier reading device, and vernier reading device includes the first nonadjustable signal
With the first vernier scale, on the right side of base plate, the first vernier scale is arranged on the sliding block on right side the first nonadjustable signal, passes through
Vernier reading device, two roller inner side spacing of adjustment.
Described base plate and the sliding block in left side are provided with the second vernier reading device, and the second vernier reading device includes second
Nonadjustable signal and the second vernier scale, the second nonadjustable signal are arranged on base plate left side, and the second vernier scale is arranged on the cunning in left side
On block, coordinated by the second vernier scale and the second nonadjustable signal, the sliding block left surface on the left of reading is between semicircle bearing axis
Distance.
The sliding block upper surface in described left side is provided with the 3rd nonadjustable signal, and the 3rd nonadjustable signal is matched somebody with somebody with vernier positioning sliding block
Close, the distance of the sliding block left surface on the left of reading to vernier positioning sliding block right-hand member.
Described handle passes through the circular hole of screw rod upper end and is slided along circular hole, and arc head is installed at handle two ends.
The present invention has the advantage that and beneficial effect
Aviation stainless steel, aluminium alloy and titanium alloy etc materials will carry out stress corrosion (cracking) test in development and application process
With research work, the present invention meeting on the premise of national standard (GB) and civil aviaton's standard (MH) iso-stress Corrosion standards require,
There is provided a kind of U-shaped sample preparation device of innovation, by taking the preparation precision of controllable sample arc diameter, can control and squeeze
The accuracy of alignment of sample during pressure, measurable pressure head extrusion and displacement and plate stop position in mark, different size sample can be met
The sample arc section five Technologies measure for preparing and can obtaining type quality higher reaches high efficiency, prepares U-shaped stress in high precision
The purpose of corrosion sample.The preparation precision of controllable sample arc diameter, deviation is less than 0.2mm, intermarginal in roller by adjusting
Away from precision so that the preparation precision of Control Assay arc diameter；The accuracy of alignment of sample during controllable extruding, with the use of the
2nd, the 3rd reading plotter, the position of vernier positioning sliding block is adjusted according to specimen length, it is ensured that sample centering essence higher
Degree, deviation is less than 0.2mm；Plate stop position in measurable pressure head extrusion and displacement and mark, tries for groping and controlling after extruding
The radian of sample circular arc, to meet testing standard requirement；The preparation of different size sample can be met, what different tests standard was used
Specimen size is not quite similar, and the sample that set of device can meet different tests standard prepares requirement；Type quality higher can be obtained
Sample arc section, by the cooperation of pressure head and bearing, can extrude out the sample arc section of type quality higher.
The present invention solve when prepared by sample be difficult to control circular arc radian, it is difficult to ensure that sample accuracy of alignment, it is difficult to control
The preparation precision of sample arc diameter and the problem for being difficult to prepare type quality sample arc section higher, there is provided one kind is common to
The U-shaped sample preparation device of stress corrosion of existing testing standard.The device is easy to use, be suitable to it is quick, prepare high-quality in batches
Sample.
The present invention prepares the device that metal stresses corrode U-shaped sample for a kind of, and the device can be used to prepare satisfaction country mark
The U-shaped stress corrosion sample of standard (GB) and civil aviaton's standard (MH) etc. standard requirement, being characterized in can be with Control Assay arc diameter
Preparation precision, can control extruding when sample accuracy of alignment, can measure pressure head extrusion and displacement and mark in plate stop position
Put, the preparation of the U-shaped sample of different size can be met, the sample arc section of type quality higher can be obtained.
Brief description of the drawings
Fig. 1 is the front view of present clip.
Fig. 2 is the top view of present clip.
Fig. 3 is the left view of present clip.
Fig. 4 is the 3-D view of present clip one side.
Fig. 5 is A positions enlarged drawing in Fig. 4.
Fig. 6 is the 3-D view in present clip other side face.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.As shown in Figures 1 to 6,
Device is made up of framework, pressurizing unit, roller pressing mold and transmission device：
The framework includes top board 1, side plate 2 and base plate 3, and side plate 2 is placed in the two ends of base plate 3 and fixation, two side plates 2 it is interior
Side is equipped with dovetail groove, and top board 1 is placed in two upper surfaces of side plate 2 and fixes, and upper plate center is provided with manhole.
The pressurizing unit includes handle 4, middle plate 5, arc head 6, shop bolt 7, screw rod 8, threaded sleeve 9 and pressure head
10.Handle 4 passes through the circular hole of the upper end of screw rod 8 and is slided along circular hole, and arc head 6 is installed at the two ends of handle 4, prevents handle 4 from screw rod 8
In skid off, with merging along dovetail groove slip, threaded sleeve 9 and the upper surface of top board 1 simultaneously lead to for the dovetail groove of middle plate 5 and side plate 2
Cross bolt to fix, screw rod 8 passes through threaded sleeve 9 and top board 1, the lower end of screw rod 8 is provided with circular arc rotating gravure, and the lower end of screw rod 8 is entered
Enter the center hole of middle plate 5 and positioned by shop bolt 7, the groove fit on pressure head 10 and middle plate 5 is simultaneously bolted.
The roller pressing mold includes sliding block 11, vernier positioning sliding block 12 and roller 13.Base plate 3 is provided with dovetail groove, sliding block
11 pass through dovetail groove and base plate 3 with merging along dovetail groove slip, and the two ends of roller 13 are installed bearing and are simultaneously assemblied in the circular hole of sliding block 11,
The upper surface of sliding block 11 in left side is provided with dovetail groove, and vernier positioning sliding block 12 is matched somebody with somebody with the sliding block 11 in left side by dovetail groove and merged along swallow
Stern notch is slided.
The transmission device includes left-handed leading screw 14, dextrorotation leading screw 15, shaft coupling 16, runner 17 and retaining mechanism 18.It is left
Rotation leading screw 14 and dextrorotation leading screw 15 are connected through side plate 2 and sliding block 11 and by shaft coupling 16, left-handed leading screw 14 and dextrorotation leading screw
15 are coordinated by bearing with side plate 2, and runner 17, installation locking mechanism 18 on the outside of dextrorotation leading screw are installed in the outside of left-handed leading screw 14.
Described side plate 2 is provided with data scale 19, and middle plate 5 is provided with mark pointer 20, is pushed for measuring pressure head 10
Distance and mark push halt；
Interchangeable " V " font semi arch bearing 21 is installed, arc radius are 8mm-16mm on described base plate 3；
Described base plate 3 and sliding block 11 is provided with vernier reading device, and vernier reading device includes the first nonadjustable signal 22
With the first vernier scale 23, installed in the right side of base plate 3, the first vernier scale 23 is installed in right side sliding block 11 for the first nonadjustable signal 22
On, by vernier reading device, adjust two inner side spacing of roller 13；
Described base plate and sliding block is provided with the second vernier reading device, and the second vernier reading device includes that second fixes mark
The vernier scale 25 of chi 24 and second, the second nonadjustable signal 24 is arranged on the left side of base plate 3, and the second vernier scale 25 is slided installed in left side
On block 11, coordinated with the second nonadjustable signal 24 by the second vernier scale 25, read the left surface of left slider 11 to semi arch branch
Distance between 21 axis of seat；
Described left slider 11 is provided with the 3rd nonadjustable signal 26, and the 3rd nonadjustable signal 26 is matched somebody with somebody with vernier positioning sliding block 12
Close, read the left surface of left slider 11 to the distance of the right-hand member of vernier positioning sliding block 12.
1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5 and Fig. 6 make further to application method of the invention below in conjunction with the accompanying drawings
Description.
U-shaped sample preparation device is placed in work edge of table, the lower surface of base plate 3 is fitted with desktop, will filled by bolt
Put and fix on the table.Required according to sample arc diameter, corresponding pressure head 10 and semi arch bearing 21, rotating wheel are installed
17, the left-handed leading screw 14 of driven by rotating wheel, shaft coupling 16 and dextrorotation leading screw 15 are rotated, and then band movable slider 11 is slided, by the first trip
Mark reading plotter setting sliding block 11 position, is allowed to meet permissible accuracy, by adjusting the locking screw of retaining mechanism 18 and then right
Sliding block 11 is positioned, according to specimen length and fixed with the use of the second vernier reading device, the 3rd Position Scale 26 and vernier
Position sliding block 12 determines the position of vernier positioning sliding block 12, then is bolted, and sample is placed on roller 13, positions vernier
Sliding block 12 and sample left contact, rotary handle 4, make pressure head 10 read this with sample gentle touchdown and by mark pointer 19 first
Beginning position scale, requires according to different tests standard, pressure head 10 is pushed a section and moves or make sample complete with semi arch bearing 21
Stop extruding after Full connected, if it is desired, stop position scale is read by mark pointer 19, the difference of above-mentioned two scale is pressure
First 10 extrusion and displacement.Handle 4 is reversely rotated, pressure head 10 is raised above to appropriate location, U-shaped sample is removed, further according to experiment
Standard requirement installs insulation spacer and bolt for sample, completes U-shaped sample and prepares.
Claims (6)
1. a kind of device for preparing the U-shaped sample of stress corrosion, it is characterized in that：Device is by framework, pressurizing unit, roller pressing mold and biography
Dynamic device composition：The framework includes top board (1), side plate (2) and base plate (3), and base plate (3) is provided with dovetail groove, on base plate (3)
" V " font semicircle bearing (21) being provided with, arc radius are 8mm-16mm；Side plate (2) is placed in base plate (3) two ends and fixes,
Dovetail groove is equipped with the inside of two side plates (2), top board (1) is installed in side plate (2) upper surface and fixes, and top board is provided with (1)
Through hole；The pressurizing unit includes handle (4), middle plate (5), shop bolt (7), screw rod (8), threaded sleeve (9) and pressure head
(10), threaded sleeve (9) is fixed on the upper surface of top board (1), and screw rod (8) is through threaded sleeve (9) and top board (1), handle
(4) through the circular hole of screw rod (8) upper end, screw rod (8) lower end is provided with circular arc rotating gravure, plate (5) in the entrance of screw rod (8) lower end
Center hole is simultaneously positioned by shop bolt (7), and middle plate (5) is matched somebody with somebody with the dovetail groove of side plate (2) and merged along dovetail groove slip, middle plate
(5) it is provided with groove at lower surface center hole, the groove fit on pressure head (10) and middle plate (5) is simultaneously fixed；The roller pressing mold
Including sliding block (11), vernier positioning sliding block (12) and roller (13), sliding block (11) is divided into left and right two, and sliding block (11) is provided with cunning
Rail, slide rail is placed in the dovetail groove of base plate (3), and is slided along dovetail groove, and roller (13) two ends are installed bearing and are assemblied in sliding block
(11) in circular hole, sliding block (11) upper surface in left side is provided with dovetail groove, and vernier positioning sliding block (12) is by dovetail groove and sliding block
(11) slided along dovetail groove with merging；The transmission device include left-handed leading screw (14), dextrorotation leading screw (15), shaft coupling (16),
Runner (17) and retaining mechanism (18), left-handed leading screw (14) and dextrorotation leading screw (15) are through side plate (2) and sliding block (11) and pass through
Shaft coupling (16) is connected, and left-handed leading screw (14) and dextrorotation leading screw (15) are coordinated by bearing and side plate (2), and left-handed leading screw (14) is outward
Side is installed by runner (17), dextrorotation leading screw outside (15) installation locking mechanism (18).
2. it is according to claim 1 it is a kind of prepare the device that metal stresses corrode U-shaped sample, it is characterized in that, described side
Plate (2) is provided with data scale (19), and position corresponding with data scale (19) is provided with mark pointer (20) on middle plate (5).
3. it is according to claim 1 it is a kind of prepare the device that metal stresses corrode U-shaped sample, it is characterized in that, described bottom
The sliding block (11) on plate (3) and right side is provided with vernier reading device, and vernier reading device includes the first nonadjustable signal (22) and the
One vernier scale (23), installed in base plate (3) right side, the first vernier scale (23) is installed in right side for the first nonadjustable signal (22)
On sliding block (11), by vernier reading device, two roller (13) inner side spacing of adjustment.
4. it is according to claim 1 it is a kind of prepare the device that metal stresses corrode U-shaped sample, it is characterized in that, described bottom
The sliding block in plate and left side is provided with the second vernier reading device, and the second vernier reading device includes the second nonadjustable signal (24) and the
Two vernier scales (25), installed in base plate (3) left side, the second vernier scale (25) is installed in left side for the second nonadjustable signal (24)
On sliding block (11), coordinated by the second vernier scale (25) and the second nonadjustable signal (24), sliding block (11) left side on the left of reading
Face is to the distance between semicircle bearing (21) axis.
5. it is according to claim 1 it is a kind of prepare the device that metal stresses corrode U-shaped sample, it is characterized in that, a described left side
Sliding block (11) upper surface of side is provided with the 3rd nonadjustable signal (26), and the 3rd nonadjustable signal (26) is matched somebody with somebody with vernier positioning sliding block (12)
Close, the distance of sliding block (11) left surface on the left of reading to vernier positioning sliding block (12) right-hand member.
6. it is according to claim 1 it is a kind of prepare the device that metal stresses corrode U-shaped sample, it is characterized in that, described hand
Handle (4) through screw rod (8) upper end circular hole and along circular hole slide, handle (4) two ends install arc head (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710004917.2A CN106908288B (en) | 2017-01-04 | 2017-01-04 | Device for preparing stress corrosion U-shaped sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710004917.2A CN106908288B (en) | 2017-01-04 | 2017-01-04 | Device for preparing stress corrosion U-shaped sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106908288A true CN106908288A (en) | 2017-06-30 |
| CN106908288B CN106908288B (en) | 2019-12-27 |
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ID=59206884
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710004917.2A Active CN106908288B (en) | 2017-01-04 | 2017-01-04 | Device for preparing stress corrosion U-shaped sample |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201611288U (en) * | 2010-01-15 | 2010-10-20 | 宁波大学 | Vertical pressure applying device for measuring piezoresistive property of material |
| US8302485B2 (en) * | 2010-10-28 | 2012-11-06 | Chevron U.S.A. Inc. | Testing device for stress corrosion cracking |
| CN203164064U (en) * | 2013-03-21 | 2013-08-28 | 深圳万测试验设备有限公司 | Bending tester |
| CN103760037A (en) * | 2014-01-23 | 2014-04-30 | 湖南大学 | Bearing-type damage biomechanic three-point bending test device and bearing-type damage biomechanic three-point bending method |
| CN205463746U (en) * | 2016-01-12 | 2016-08-17 | 竹昌精密冲压件(上海)有限公司 | Simple bending device |
-
2017
- 2017-01-04 CN CN201710004917.2A patent/CN106908288B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201611288U (en) * | 2010-01-15 | 2010-10-20 | 宁波大学 | Vertical pressure applying device for measuring piezoresistive property of material |
| US8302485B2 (en) * | 2010-10-28 | 2012-11-06 | Chevron U.S.A. Inc. | Testing device for stress corrosion cracking |
| CN203164064U (en) * | 2013-03-21 | 2013-08-28 | 深圳万测试验设备有限公司 | Bending tester |
| CN103760037A (en) * | 2014-01-23 | 2014-04-30 | 湖南大学 | Bearing-type damage biomechanic three-point bending test device and bearing-type damage biomechanic three-point bending method |
| CN205463746U (en) * | 2016-01-12 | 2016-08-17 | 竹昌精密冲压件(上海)有限公司 | Simple bending device |
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| Publication number | Publication date |
|---|---|
| CN106908288B (en) | 2019-12-27 |
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