CN105891099B - Experimental method and device for welding joint force-corrosion coupling test - Google Patents
Experimental method and device for welding joint force-corrosion coupling test Download PDFInfo
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- CN105891099B CN105891099B CN201610445317.5A CN201610445317A CN105891099B CN 105891099 B CN105891099 B CN 105891099B CN 201610445317 A CN201610445317 A CN 201610445317A CN 105891099 B CN105891099 B CN 105891099B
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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
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0035—Spring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/024—Corrosive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0268—Dumb-bell specimens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention discloses an experimental method and a device for testing the force-corrosion coupling of a welding joint, which comprises the following steps: set up heating device in the outside of the autoclave body, set up adiabatic heat preservation in heating device's the outside, set up the autoclave lid at the upper surface of the autoclave body, set gradually along the diametric (al) on the autoclave lid circular surface: the high-pressure autoclave comprises a first air inlet pipe, a second air inlet pipe, an air outlet pipe, a feeding auxiliary device, a pressure sensor and a pressure gauge, wherein the bottom inside the high-pressure autoclave body is provided with a testing device, a tensile sample is arranged between a left chuck and a right chuck, an extensometer is arranged above the tensile sample, and a strain gage is arranged below the tensile sample.
Description
Technical field
The invention belongs to environmental corrosion technology neighborhoods, more particularly, are related to a kind of for welding point power and corrosion
The experimental method and device of coupling measurement.
Background technology
Metal material is under specific media environment and tensile stress double action, by crackle occurs after a certain period of time and breaks
The phenomenon that splitting referred to as stress corrosion fracture.Since its uncertain low stress brittle fracture frequently results in accident generation and a large amount of materials
Material loss, therefore its harm is very big.Domestic and foreign scholars pay close attention to always and are dedicated to grinding for metal stresses corrosion aspect relevant issues
Study carefully.Stress corrosion (cracking) test often has with principle at present：Permanent distortional stress corrosion experiment method, constant load stress etching experiment method and prefabricated
Precracked specimen stress etching experiment method.Wherein constant strain method formula makes sample deformation by stretching or being bent by generates tensile stress, profit
With with sufficiently rigid this deformation of frame maintenance or directly using stress application frame, ensure that sample deformation is constant.It is right
For the uniform sample of material, the consistent purpose of sample deformation can be realized in traditional stress application frame.And for welding point,
Due to the solidification in welding process when the fusing and cooling of weld metal so that weld metal, between heat affected area and base material
Chemical composition and tissue have notable difference.Therefore, weld metal cannot be obtained using traditional stress application frame and test device
With the default deformation of base material.The present invention measures sample simultaneously on the basis of conventional force frame, using foil gauge and extensometer
The deformation of weld seam and welding point in stress, has obtained the strain of sample weld seam and base material under same stress condition.Meanwhile
In conjunction with high-temperature high-pressure reaction kettle device, welding point high temperature pressure corrosion under different stress can be carried out and tested.
Invention content
It is surveyed for the corrosion coupling of welding point power it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of
The experimental method and device of examination.
The purpose of the present invention is achieved by following technical proposals：
A kind of experimental provision for welding point power corrosion coupling measurement：Autoclave body is cylindrical container, in high pressure
Heating device is arranged in the outside of autoclave body, and thermal insulating warm-keeping layer is arranged in the outside of heating device, is arranged in the upper surface of autoclave body
High pressure kettle cover, fastening bolt pass through fixed mounting hole, are connected with autoclave body interconnecting piece, so that kettle cover is tightened to one with autoclave body
It is whole, and realize sealing, it is diametrically disposed on high pressure kettle cover circular surface：First air inlet pipe hole, the second air inlet
Pore, charging aperture, pressure sensor hole and outlet pore, wherein the first air inlet pipe is arranged in the first air inlet pipe hole, first into
It is provided with the first air inlet pipe valve on tracheae, the second air inlet pipe is set in the second air inlet pipe hole, is provided in the second air inlet pipe
Escape pipe is arranged in outlet pore in second air inlet pipe valve, and escape pipe valve is arranged on escape pipe, is arranged on charging aperture
Feed auxiliary device, and pressure sensor and pressure gauge are provided on pressure sensor hole；It is set in autoclave body interior bottom portion
Test device holding plane is set, test device is set on test device holding plane, and the supporting rack of test device is by mutually equal
Capable two transverse slats (upper plate and lower plate) are connected with each other with riser (left plate and right panel) with two and form, and are installed in the interposition of left plate
Square hole is set, left collet is set in the position of square hole, left collet runs through square hole, and one end is in left plate lateral ends in left plate
Side, the part on the outside of left plate are screwed cylinder, and the part on the inside of left plate is square column, and right-end openings are arranged in square column
Groove, left fastening nut is set in the upper end of groove, left trip bolt is set in the lower end of groove, in the centre position of right panel
Right collet is arranged in the position of square hole in square hole, in the groove that right collet setting left end is open, is arranged in the upper end of groove right
Fastening nut is arranged right trip bolt in the lower end of groove, tensile sample, tensile sample is arranged among left collet and right collet
Both ends stretch into inside grooves on two sides, be fixedly clamped by trip bolt and fastening nut, in tensile sample upper face center position
Install oval-shaped groove, extensometer be set above tensile sample, foil gauge is set below tensile sample, foil gauge with answer
Become piece conducting wire connection (conducting wire for connecting with foil gauge), foil gauge conducting wire passes through autoclave body outer wall and signal acquiring system
It is connected, spring is set in the position of the right collet of outside face of supporting rack right panel, spring passes through spring wires and mechanics sensor
One end be connected, the spring wires of the mechanics sensor other end passed through (for the conducting wire with spring interface) autoclave body outer wall with
Signal acquiring system is connected, and jam nut is arranged on the right side of load nut in one end setting load nut on the right side of spring.
In the above-mentioned technical solutions, the lower half portion length in autoclave body that is located at of the rotation axis accounts for autoclave body height
, the mixing component is agitating paddle or stirring disk；
In the above-mentioned technical solutions, the air inlet pipe gos deep into the bottom of autoclave body, and escape pipe is located in autoclave body
It is more than liquid surface；
In the above-mentioned technical solutions, the tensile sample thickness is 1-5mm, width 2-6mm.
In the above-mentioned technical solutions, the long axis of the oval-shaped groove of the tensile sample is 3-6mm, depth 0.2-
0.8mm。
In the above-mentioned technical solutions, the spring is 316L stainless steel springs.
The method for carrying out welding point power-corrosion coupling measurement using above-mentioned experimental provision：
Step 1：Tensile sample is fixed between left collet and right collet, and fixed foil gauge, ensures to answer below tensile sample
The efficiently sampling region for becoming piece is aligned with axis of a weld, and extensometer is arranged above tensile sample, and extensometer accommodates on gauge length,
The strain of the commissure shown by signal pickup assembly is produced to control load process and can acquire spring by mechanics sensor
Raw mechanical signal stops loading and screws jam nut when strain reaches preset value；
Step 2：Corrosive liquid is poured into a kettle, is heated and pressurization of ventilating, and pressure and temperature is maintained into preset condition
Under sample is corroded.
After reaching etching time, stop heating and ventilation, after restoring Room pressure in kettle, open reaction kettle kettle cover,
Test device is taken out, carries out sample characterization, such as measure the thickness change of tensile sample.
During power-corrosion test, before removing extensometer, foil gauge, mechanics sensor and conducting wire only for corrosion
Thickness of sample afterwards is tested and is characterized；It is also contemplated that in corrosion process, to extensometer, foil gauge, mechanics sensor and
Conducting wire is sealed processing, avoids the influence of corrosive liquid, in this way since, in entire corrosion process, extensometer and foil gauge, with
And mechanics sensor can be acquired for the corrosion process of particular etch liquid, the mechanics and strain for forming entire corrosion process are believed
Number, for analysis.
Beneficial effects of the present invention：It, can be successfully needed for the application of commissure using technical solution provided by the present invention
The strain wanted simultaneously respectively obtains the strain at weld seam and base material.Meanwhile by package unit in the high temperature and high pressure environment for simulating operating mode
Lower experiment measures the extent of corrosion of sample, the shadow that Welded Joints different parts are corroded in research deformation after a period of time
It rings, and then assesses the Service Environment of welding point.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is reaction kettle superstructure schematic diagram in Fig. 1.
Fig. 3 is test device structural representation Fig. 1 in Fig. 1.
Fig. 4 is test device structural representation Fig. 2.
Wherein 1 is supporting rack, and 2 be left collet, and 3-1 is left fastening nut, and 3-2 is right fastening nut, and 4-1 is left fastening spiral shell
Nail, 4-2 are right trip bolt, and 5 be tensile sample, and 6 be right collet, and 7 be spring, and 8 be load nut, and 9 be jam nut, and 10 are
Oval-shaped groove, 11 be extensometer, and 12 be foil gauge, and 13 be signal acquiring system, and 14 be autoclave body, and 15 be heating device,
16 be heat preservation heat insulation layer, and 17 be outlet tube valve, and 18 be the second air inlet pipe valve, and 19 be autoclave body interconnecting piece, and 20 be outlet
Pipe, 21 be pressure sensor, and 22 be pressure gauge, and 23 be charge door, and 24 be the first air inlet pipe valve, and 25 be the first air inlet pipe, 26
It is fastening bolt for the second air inlet pipe, 27,28 be high pressure kettle cover, and 29 be autoclave outer wall, and 30 be spring wires, and 31 be foil gauge
Conducting wire, 32 be test device, and 33 be outlet pore, and 34 be pressure sensor hole, and 35 be charging aperture, and 36 be rotational axis hole, and 37 are
Fixed mounting hole, 38 be the first air inlet pipe hole, and 39 be the second air inlet pipe hole.
Fig. 5 is the structural schematic diagram of the sample used in the present embodiment, and wherein a is 5mm, and b 3mm, c 35mm, d are
0.5mm, e 2mm.
Specific implementation mode
Present invention is further described in detail with specific embodiment below in conjunction with the accompanying drawings：
A kind of experimental provision for welding point power corrosion coupling measurement：Autoclave body is cylindrical container, in high pressure
Heating device is arranged in the outside of autoclave body, and thermal insulating warm-keeping layer is arranged in the outside of heating device, is arranged in the upper surface of autoclave body
High pressure kettle cover, fastening bolt pass through fixed mounting hole, are connected with autoclave body interconnecting piece, so that kettle cover is tightened to one with autoclave body
It is whole, and realize sealing, it is diametrically disposed on high pressure kettle cover circular surface：First air inlet pipe hole, the second air inlet
Pore, charging aperture, pressure sensor hole and outlet pore, wherein the first air inlet pipe is arranged in the first air inlet pipe hole, first into
It is provided with the first air inlet pipe valve on tracheae, the second air inlet pipe is set in the second air inlet pipe hole, is provided in the second air inlet pipe
Escape pipe is arranged in outlet pore in second air inlet pipe valve, and escape pipe valve is arranged on escape pipe, is arranged on charging aperture
Feed auxiliary device, and pressure sensor and pressure gauge are provided on pressure sensor hole；It is set in autoclave body interior bottom portion
Test device holding plane is set, test device is set on test device holding plane, and the supporting rack of test device is by mutually equal
Capable two transverse slats (being respectively upper plate and lower plate) are connected with each other with riser (being respectively left plate and right panel) with two and form,
Square hole is arranged in the centre position of left plate, left collet is arranged in the position of square hole, left collet runs through square hole, and one end is in left plate
For lateral ends on the inside of left plate, the part on the outside of left plate is screwed cylinder, and the part on the inside of left plate is square column, in side
The groove of right-end openings is arranged in shape column, and left fastening nut is arranged in the upper end of groove, and left trip bolt is arranged in the lower end of groove,
In the centre position square hole of right panel, right collet is set in the position of square hole, the groove that left end is open is set in right collet,
Right fastening nut is arranged in the upper end of groove, and right trip bolt is arranged in the lower end of groove, is arranged among left collet and right collet
The both ends of tensile sample, tensile sample are stretched into inside grooves on two sides, are fixedly clamped by trip bolt and fastening nut, are tried stretching
Oval-shaped groove is arranged in sample upper face center position, and extensometer is arranged above tensile sample, is arranged below tensile sample and answers
Become piece, foil gauge is connect (conducting wire for connecting with foil gauge) with foil gauge conducting wire, and foil gauge conducting wire passes through outside autoclave body
Wall is connected with signal acquiring system, spring is arranged in the position of the right collet of outside face of supporting rack right panel, spring passes through spring
One end of conducting wire and mechanics sensor (being placed in outside autoclave body, do not marked in figure) is connected, the spring of the mechanics sensor other end
Conducting wire (being used for and the conducting wire of spring interface) is connected across autoclave body outer wall with signal acquiring system, one end on the right side of spring
Jam nut is arranged on the right side of load nut in setting load nut.
In the above-mentioned technical solutions, the lower half portion length in autoclave body that is located at of the rotation axis accounts for autoclave body height
, the mixing component is agitating paddle or stirring disk；
In the above-mentioned technical solutions, the air inlet pipe gos deep into the bottom of autoclave body, and escape pipe is located in autoclave body
It is more than liquid surface；
In the above-mentioned technical solutions, the tensile sample thickness is 1-5mm, width 2-6mm.
In the above-mentioned technical solutions, the long axis of the oval-shaped groove of the tensile sample is 3-6mm, depth 0.2-
0.8mm。
In the above-mentioned technical solutions, the spring is 316L stainless steel springs.
1 illustrates a kind of experimental method for welding point power corrosion coupling measurement by the following examples：
Step 1：Tensile sample is fixed between left collet and right collet, fixed foil gauge (Tokyo below tensile sample
Sokki Kenkyujo Co., Ltd, model FLK-1-17), ensure efficiently sampling region and the axis of a weld pair of foil gauge
Standard, wherein prestrain are 1.5%, and extensometer (Changchun Academy of Machinery Science ＆ Technology Co., Ltd., product type is arranged above tensile sample
Number CBY-14), extensometer accommodates on gauge length, the strain of the commissure shown by signal pickup assembly come control load into
Journey, and the mechanical signal that spring generates can be acquired by mechanics sensor, stop loading and screwing when strain reaches preset value
Jam nut simultaneously will survey strain device (extensometer and foil gauge) dismounting, and the original size of sample is recorded in Stereo microscope.
Step 2：Corrosive liquid is poured into a kettle, is heated and pressurization of ventilating, and pressure and temperature is maintained, wherein pressing
Power is 0.3MPa, CO2Volume fraction 10%；N2Volume fraction 90%, corrosive liquid temperature are 90 DEG C, and the reaction time is that (120 was small in 5 days
When), corrosive liquid is aqueous solution, ingredient Na+It is 11.193, K+It is 0.548, Ca2+It is 1.001, Mg2+It is 0.176, Fe2+For
0.035,Cl-It is 19.747, SO42-It is 0.603, and HCO3-It is 0.245, unit is mg/L.Step 3：Stop heating and leads to
Gas opens reaction kettle kettle cover after restoring Room pressure in kettle, takes out test device, measures the thickness change of tensile sample.
In the above-described embodiments, it surveys strain system and DH3821 is tested using east China.
Laboratory sample uses shape and size as shown in Fig. 5, and sample is in corrosive liquid since weld seam is thinned so that cuts
Area reduces, and the power loaded is kept constant, this will make commissure be loaded into a new stress level again and section
Product continues to reduce, and so moves in circles, and realizes the coupling of power and corrosion.After after the scheduled time, device is pulled out, observation examination
Sample corrosion thinning situation.
It is 1.5mm before tensile sample experiment, the thickness after experiment is 1.0mm, the experimental results showed that, the present invention can complete
It is expected that object of experiment, can effectively under different stress welding point carry out high temperature pressure corrosion experiment.
A kind of Welded Joints that the present invention is invented carry out the experimental provision of power corrosion coupling measurement and method can be effective
Corrode the etching problem under coupling environment in power for studying weld joint samples, with method proposed by the present invention and design
Fixture can be generalized in conjunction with sample cross analysis and make specific analysis under various etching conditions to weld seam or base material.
It is also contemplated that in corrosion process, processing is sealed to extensometer, foil gauge, mechanics sensor and conducting wire, is kept away
Exempt from the influence of corrosive liquid, in this way since, in entire corrosion process, extensometer and foil gauge and mechanics sensor can be directed to
The corrosion process of particular etch liquid is acquired, and the mechanics and strain signal of entire corrosion process are formed, for analysis.
It describes the invention in detail, but content is only the preferred embodiment of the present invention, cannot be recognized above
For the practical range for limiting the present invention.Any changes and modifications in accordance with the scope of the present application should all still return
Belong within the patent covering scope of the present invention.
Claims (4)
1. a kind of experimental provision for welding point power corrosion coupling measurement：It is characterized in that：Autoclave body holds for cylinder
Device, is arranged heating device in the outside of autoclave body, thermal insulating warm-keeping layer is arranged in the outside of heating device, in the upper of autoclave body
High pressure kettle cover is arranged in surface, and fastening bolt passes through fixed mounting hole, is connected with autoclave body interconnecting piece, so that kettle cover is tight with autoclave body
Gu at an entirety, and realizing sealing, diametrically it is disposed on high pressure kettle cover circular surface：First air inlet pipe hole,
Second air inlet pipe hole, charging aperture, pressure sensor hole and outlet pore, wherein the first air inlet is arranged in the first air inlet pipe hole
It manages, is provided with the first air inlet pipe valve in the first air inlet pipe, the second air inlet pipe, the second air inlet pipe are set in the second air inlet pipe hole
On be provided with the second air inlet pipe valve, escape pipe is set in outlet pore, on escape pipe be arranged escape pipe valve, feeding
Setting charging auxiliary device, pressure sensor and pressure gauge are provided on pressure sensor hole on hole；Inside autoclave body
Test device holding plane is set on bottom, test device, the supporting rack of test device are set on test device holding plane
It is made of with riser interconnection with two two transverse slats parallel to each other, square hole is set in the centre position of left plate, rectangular
The position in hole is arranged left collet, and left collet runs through square hole, one end in left plate lateral ends on the inside of left plate, the portion on the outside of left plate
It is divided into screwed cylinder, the part on the inside of left plate is square column, the groove of right-end openings is arranged in square column, in groove
Left fastening nut is arranged in upper end, left trip bolt is arranged in the lower end of groove, in the centre position square hole of right panel, in square hole
Position right collet is set, in the groove that right collet setting left end is open, right fastening nut is set in the upper end of groove, in groove
Lower end right trip bolt is set, tensile sample is set among left collet and right collet, and both sides are stretched at the both ends of tensile sample
Inside grooves are fixedly clamped by trip bolt and fastening nut, and oval-shaped groove is arranged in tensile sample upper face center position,
Extensometer is set above tensile sample, foil gauge is set below tensile sample, foil gauge is connect with foil gauge conducting wire, strain
Piece conducting wire is connected across autoclave body outer wall with signal acquiring system, is set in the position of the right collet of outside face of supporting rack right panel
Spring is set, spring is connected by spring wires with one end of mechanics sensor, and the spring wires of the mechanics sensor other end pass through
Autoclave body outer wall is connected with signal acquiring system, one end setting load nut on the right side of spring, on the right side of load nut
Jam nut is set.
2. a kind of experimental provision for welding point power corrosion coupling measurement according to claim 1, it is characterised in that：
The air inlet pipe gos deep into the bottom of autoclave body, and escape pipe is located in autoclave body more than liquid surface.
3. a kind of experimental provision for welding point power corrosion coupling measurement according to claim 1, it is characterised in that：
The tensile sample thickness is 1-5mm, width 2-6mm；The long axis of the oval-shaped groove of the tensile sample is 3-
6mm, depth 0.2-0.8mm.
4. a kind of experimental provision for welding point power corrosion coupling measurement according to claim 1, it is characterised in that：
The spring is 316L stainless steel springs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610445317.5A CN105891099B (en) | 2016-06-16 | 2016-06-16 | Experimental method and device for welding joint force-corrosion coupling test |
| CN201810210288.3A CN108519321B (en) | 2016-06-16 | 2016-06-16 | Method for testing by using welding joint force-corrosion coupling testing device |
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| CN201610445317.5A CN105891099B (en) | 2016-06-16 | 2016-06-16 | Experimental method and device for welding joint force-corrosion coupling test |
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| CN201610445317.5A Active CN105891099B (en) | 2016-06-16 | 2016-06-16 | Experimental method and device for welding joint force-corrosion coupling test |
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| CN106370514A (en) * | 2016-10-19 | 2017-02-01 | 北京科技大学 | Pipeline loading deformation coordinating mechanism for high-temperature high-pressure vapor environment |
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