CN107727510A - A kind of experimental rig of pulse current auxiliary bar samples uniaxial tension - Google Patents
A kind of experimental rig of pulse current auxiliary bar samples uniaxial tension Download PDFInfo
- Publication number
- CN107727510A CN107727510A CN201711225627.7A CN201711225627A CN107727510A CN 107727510 A CN107727510 A CN 107727510A CN 201711225627 A CN201711225627 A CN 201711225627A CN 107727510 A CN107727510 A CN 107727510A
- Authority
- CN
- China
- Prior art keywords
- bar samples
- fixture block
- experimental rig
- die cavity
- conducting ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009413 insulation Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000005619 thermoelectricity Effects 0.000 claims description 2
- 239000010426 asphalt Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000009864 tensile test Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 244000061408 Eugenia caryophyllata Species 0.000 description 1
- 235000016639 Syzygium aromaticum Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- G01N3/04—Chucks
-
- 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
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- 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
-
- 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
-
- 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
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
Landscapes
- 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 present invention provides a kind of experimental rig of pulse current auxiliary bar samples uniaxial tension, including the pulse power and cupping machine, the cupping machine includes the stretching clamp that is fixedly connected with bar samples both ends and for driving stretching clamp close to each other or remote drive device, and the conducting ring being connected with pulse power positive and negative electrode is respectively equipped with the both ends of bar samples；Wedge-shaped die cavity is provided with the stretching clamp and two insulation fixture blocks being oppositely arranged are provided with each die cavity, neck is provided with the opposite face of two fixture blocks that insulate and positioning fixture block is provided with each neck, the locating slot for being used for accommodating bar samples both ends and conducting ring is provided with the opposite face that two position fixture block, annular knurl anti-skid structure is provided with the contact surface of locating slot and bar samples.Described device is applied to the research to bar-shaped metal materials deformational behavior under pulse current effect, is easy to the processing of sample, can avoid the waste of material and reduce the generation of junction Joule heat.
Description
Technical field
The present invention relates to metal material deformational behavior test device technical field, in particular it relates to which a kind of pulse current is auxiliary
Help the experimental rig of bar samples uniaxial tension.
Background technology
Since the former Russian scholar O.A.Troitskii et al. has found that pulse current exists substantially to the deformational behavior of zinc monocrystalline
After influence, pulse current causes the great attention of people as a kind of new material process mode.Research has shown that pulse is electric
Stream can be with the deformability of reinforcing material, i.e. Electroplastic.K.Okazaki and H.Conrad et al. result of study has confirmed
Pulse current can reduce pure Ti, Pb, Sn resistance of deformation, so as to improve its metal ductility；Jiang et al. have studied arteries and veins
After rushing influence of the electric current to AZ91 magnesium alloy rollings, it is found that pulse current improves the crystallized ability of AZ91 magnesium alloys, Er Qiebian
Without re-annealing to eliminate Work Hardening Problem during shape, while the generation of β phases can also be suppressed, improve alloy property；
Pulse current is applied in the cold-drawing technology of the alloys such as austenitic stainless steel, 304L stainless steels by Tang et al., finds pulse electricity
Stream can reduce cold power (about 20%~50%), and metal elongation percentage is substantially increased, and surface quality is also improved, and
And substantially increase production efficiency.
In summary, in terms of improving materials microstructure and improving material property there is obvious improve in pulse current
Effect, but in process of experimental there is a problem in that：
1st, according to country and professional standard, existing research mode is all that test button is processed into the thick tabulars of 1-3mm
Structure, due to ensure the precision of size of sample in range of small, therefore difficulty of processing is very big；
2nd, tested with the big plate tensile sample of scale error, the result of the test reliability finally given is not high, is unfavorable for
The development of research work；
3rd, in order to obtain accurate data, either selection is repeated several times experiment or uses fine processing method, all
Experimentation cost is raised and has caused waste of material, it is contemplated that the synthesis of some metals is difficult, expensive, and which limits correlation to grind
The progress studied carefully.
Chinese patent CN201510012160 discloses a kind of energization hot tensile test device and stretching test method, electronics
The upper and lower fixture of universal testing machine includes grip block, connecting rod and for realizing the two insulation board being indirectly connected with, the folder
Tool is fixedly installed on the entablature or moved cross beam of electronic universal tester by connecting rod, and the grip block is used to be fixedly connected
The both ends of sample and connected respectively with the positive and negative electrode of power supply.The inventive structure is simple and crude, and insulation safety can not ensure, and only limit
In the energization hot tensile test to plate tensile sample, can not solve the problems, such as that above-mentioned plate tensile sample is present；Further, since the folder of fixture
It is a fixture in itself to hold plate, and structural volume is big, when have high current (hundreds of even several kiloamperes) by when, grip block can produce
Raw substantial amounts of Joule heat.
The content of the invention
It is an object of the invention to provide it is a kind of it is simple in construction, safe, data are accurate, joule's heat energy is few, experiment into
This low device for pulse current assistant metal sample uniaxial tensile test, to solve the problems, such as to propose in background technology.
To achieve the above object, the invention provides a kind of experiment dress of pulse current auxiliary bar samples uniaxial tension
Put, including the pulse power and cupping machine, the cupping machine be oppositely arranged including at least one set and respectively with bar-shaped examination
The stretching clamp and filled for driving with the driving close to each other or remote of two stretching clamps of group that sample both ends are fixedly connected
Put, the conduction that at least part ring is located on bar samples periphery is respectively equipped with two tip positions of the bar samples
Ring, and the conducting ring connects the positive and negative electrode of the pulse power by wire respectively；
The opposite face opening of die cavity and two die cavities is equipped with for bar samples in two stretching clamps with group
Pass through, two insulation being oppositely arranged fixture blocks are equipped with each die cavity, two insulation fixture blocks being oppositely arranged are with being oppositely arranged
Two stretching clamps be relative in different directions, neck is respectively equipped with the opposite face that two insulate fixture block, in each card
The positioning fixture block that material rigidity is more than insulation fixture block is equipped with groove, positioning is respectively equipped with the opposite face that two position fixture block
Groove, the both ends of the bar samples and the conducting ring located at its both ends are contained in the locating slot and connected and fixed with it.
Preferably, the die cavity is that wedge structure and two narrower one end of die cavity are oppositely arranged, the insulation fixture block with
Activity space between die cavity inwall be present, the stretching clamp also includes being arranged in die cavity and positioned at the fastening of the wider one end of die cavity
Knob, the tightening knob can move back and forth along the length direction of bar samples, and then drive in the insulation fixture block and die cavity
Compression between wall is loosened；When the insulation fixture block is extruded by die cavity inwall, be oppositely arranged two insulation fixture block phases
Mutually close to and bar samples are fixedly clamped by positioning fixture block.
Preferably, two insulation fixture blocks being oppositely arranged are two insulation fixture blocks of symmetrical configuration；In the locating slot and bar-shaped
Annular knurl anti-skid structure at least one is provided with the contact surface of sample.
Sample is kept firmly to be clamped all the time during experiment, therefore the die cavity for designing wedge shape can both reach the mesh
Can facilitate the dress of sample is taken again；Do not reach the requirement of clamping dynamics in view of the rigidity for the fixture block that insulate, therefore insulating
Again there is provided positioning fixture block in the neck of fixture block, the positioning fixture block is from the big material of rigidity and its contact with bar samples
Handled on face by annular knurl, so that it is guaranteed that the fastening clamp of bar samples.
Preferably, it is connected between the insulation fixture block and positioning fixture block by pin, and on insulation fixture block and positioning fixture block
Have the pin-and-hole of position correspondence.
Preferably, the material of the insulation fixture block be epoxy resin, and the material for positioning fixture block is steel plate, the conduction
The material of ring is copper.
Preferably, the conducting ring includes the not closed ring body that is set on bar samples and is arranged on the ring body opening
Extension connecting pole at mouthful, one end of the wire, which is bolted, to be arranged on the connecting pole.
Preferably, the experimental rig also includes temperature measuring equipment, and the temperature measuring equipment includes data logger and and rod
The thermocouple that shape sample outer surface directly contacts, in order to monitor the surface temperature of sample in real time.
Joule heat can be produced because electric current flows through, when current density is higher (such as 100A/mm2), temperature tends to
Reach and spent 200 more, its surface temperature is monitored, first, in order to prevent specimen temperature from exceeding the recrystallization temperature of material in itself；Second,
In order to introduce temperature data, experimental result is preferably analyzed；Test apparatus is caused to damage third, avoiding temperature too high.
Preferably, the experimental rig includes at least one bar samples, and the bar samples are metalwork, and bar-shaped examination
The stage casing diameter of sample length direction is small, and the both ends diameter of bar samples length direction is big.
Preferably, it is provided with the anti-Slipped Clove Hitch of annular knurl on the periphery that described two ends of bar samples are not provided with conducting ring
Structure, the annular knurl anti-skid structure of bar samples are arranged at the center than conducting ring closer to bar samples length direction.
Preferably, on the length direction of the bar samples, the length ratio of the annular knurl anti-skid structure of the bar samples
The length of the conducting ring is big.
Technical scheme provided by the invention at least has the advantages that：
1st, the pulse power, wire, conducting ring and the bar samples in the experimental rig together constitute one closure
Current loop, conducting ring only serve electric action and are obviously reduced without possessing fixation, structural volume, in addition for same wide
For the sample of degree or diameter, the contact area of conducting ring and bar samples is much larger than grip block and the contact surface of plate tensile sample
Product, reduces the generation of Joule heat, improves heating problem；
2nd, the experimental rig is substantially wrapped up conducting ring with insulating materials, is only left an extension connecting pole and is used
In connecting wire, the generation of electric shock accidents is farthest avoided, improves experiment security；
3rd, the experimental rig convenient disassembly, and annular knurl anti-skid structure is set at the clip position of sample so that sample
Connection fastening, effectively prevent the slippage problems that the bar samples in drawing process easily occur；
4th, the experimental rig is applied to the progress uniaxial tension change under pulse current effect of various sizes of bar samples
Shape is tested, and because bar samples are compared to plate tensile sample easily processing, machining accuracy is also easier to ensure, therefore test data
Reliably, spillage of material is few, improves test efficiency, reduces experimentation cost.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings discussed below is only some embodiments of the present invention, for this
For the those of ordinary skill of field, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other
Accompanying drawing, wherein：
Fig. 1 is the structural representation of experimental rig of the present invention；
Fig. 2 is the structural representation of bar samples in Fig. 1；
Fig. 3 is the structural representation of the stretching clamp of experimental rig shown in Fig. 1；
Fig. 4 is that structural representation is splitted in the axial direction of stretching clamp shown in Fig. 3；
Structural representation when Fig. 5 is insulation fixture block shown in Fig. 4 and positions fixture block assembling；
In figure：01 bar samples, 1 pulse power, 2 cupping machines, 3 wires, 4 temperature measuring equipments；21 stretching clamps, 22 drive
Dynamic device；211 insulation fixture blocks, 212 positioning fixture blocks, 213 conducting rings, 214 tightening knobs.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1~Fig. 5, a kind of experimental rig of pulse current auxiliary bar samples uniaxial tension, including the pulse power 1
With cupping machine 2, the cupping machine 2 include one group it is setting up and down in perpendicular and respectively with 01 liang of bar samples
Hold the stretching clamp 21 being fixedly connected and filled for driving with the driving close to each other or remote of two stretching clamps 21 of group
22 are put, is respectively equipped with conducting ring 213 in two tip positions of the bar samples 01, and the conducting ring 213 passes through wire 3
The positive and negative electrode of the pulse power 1 is connected respectively.
Wedge-shaped die cavity is equipped with two stretching clamps 21, two narrower one end of die cavity are oppositely arranged and the phase of the two
Opposite open is passed through for bar samples 01, and two left and right settings in the horizontal direction and structure are equipped with each die cavity
Symmetrical insulation fixture block 211, is respectively equipped with neck on the opposite face that two insulate fixture block 211, is equipped with each neck
Fixture block 212 is positioned, locating slot is respectively equipped with the opposite face that two position fixture block 212.
The neck is rectangular configuration and the size with positioning fixture block 212 matches, the insulation fixture block 211 and locating clip
It is connected between block 212 by pin, and the pin-and-hole of position correspondence is had on insulation fixture block 211 and positioning fixture block 212.
The locating slot is arranged to the deep rectangular configurations of 8mm close to the side of bar samples end, bar-shaped in order to accommodate
The end of sample 01 and the conducting ring 213 located at the end, and one end in the middle part of bar samples is arranged to the big bottom surface that is open
Small trapezium structure, and straight knurling is set on the side of trapezium structure, in the bar samples 01 and the trapezoidal knot of locating slot
Annular knurl is threaded on the contact surface of structure, the two cooperates to avoid sample from stretching skidding occur.
The bar samples 01 are metalwork, and the stage casing diameter of bar samples length direction is small and both ends diameter is big,
Described two ends of bar samples are not provided with being provided with annular knurl anti-skid structure on the periphery at conducting ring, the annular knurl of bar samples
Anti-skid structure is arranged at the center closer to bar samples length direction than conducting ring, in the length side of the bar samples
Upwards, the length of the annular knurl anti-skid structure of the bar samples is bigger than the length of the conducting ring.
The stretching clamp 21 also includes being arranged in die cavity and positioned at the tightening knob 214 of the wider one end of die cavity, described
Activity space be present between insulation fixture block 211 and die cavity, the tightening knob 214 can back and forth be transported along the length direction of bar samples 01
It is dynamic, and then drive the insulation fixture block 211 to be pressed on die cavity inwall or make to loosen between the two；When it is described insulation fixture block 211 by
To the tilt internal wall of wedge-shaped die cavity squeezing action when, two insulation fixture blocks that left and right is set are close to each other and by positioning fixture block
212 are fixedly clamped bar samples 01.
The conducting ring 213 includes the not closed ring body being set on bar samples 01 and is arranged on the ring body opening
The extension connecting pole at place, the connecting pole pass from the gap between two insulation fixture blocks, and one end of the wire 3 is consolidated by bolt
Surely it is arranged on the connecting pole.
In the present embodiment, the experimental rig also includes temperature measuring equipment 4, and the temperature measuring equipment 4 includes data logger
And the thermocouple directly contacted with the outer surface of bar samples 01, in order to monitor the surface temperature of sample in real time；The thermoelectricity
Even head is wrapped up using insulating tape and (can also be used other good insulation preformances and resistant to elevated temperatures material is completely cut off), then
Directly contacted with the surface of bar samples, prevent high current from flowing through thermocouple and bringing damage to system for detecting temperature.
In the present embodiment, the pulse power 1 can provide 0~5400A adjustable positive pulse electric current, wherein frequency range
For 100~1000HZ, duty cycle range is 0~99%, and the wire 3 is the non-generic wire that can bear high current, and at it
Outer wrap has high temperature resistant mica material or other high-temperature insulation materials so that the wire 3 can pacify under high current environment
Full work.
In the present embodiment, the material of the insulation fixture block 211 is epoxy resin, and the material of the positioning fixture block 212 is
Steel plate, the material of the conducting ring 213 is copper.
In uniaxial tensile test of the progress pulse current to test button, it is mutual that two tightening knobs 214 are adjusted first
It is remote so that insulation fixture block 211 can be moved freely in die cavity, and positioning fixture block 212 is placed on to the neck of insulation fixture block 211
It is interior, and the two is fixed with pin, then bar samples 01 that both ends are put to conducting ring 213 are put into die cavity, and are made
The both ends for obtaining bar samples 01 connect and fix with corresponding positioning fixture block 212, then adjust two tightening knobs 214 and mutually lean on
Closely, by promoting insulation fixture block 211 to be pressed on die cavity inwall so that bar samples 01 are positioned the firm grip of fixture block 212, most
The connecting pole of the pulse power 1 and conducting ring 213 is connected with wire 3 afterwards, the medium position of bar samples 01 is connected with thermocouple, is beaten
Opening apparatus switchs, and starts to test.
After the completion of experiment, deenergization, two tightening knobs 214 are adjusted again and are located remotely from each other, unclamp insulation fixture block successively
211, with after positioning fixture block 212, take out bar samples 01.
The preferred embodiments of the present invention are the foregoing is only, not thereby limit the scope of patent protection of the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention, it is every
Any improvement made using description of the invention and accompanying drawing content or equivalent substitution, directly or indirectly it is used in other related
Technical field, it all should be included within the scope of the present invention.
Claims (10)
- A kind of 1. experimental rig of pulse current auxiliary bar samples uniaxial tension, it is characterised in that including the pulse power (1) and Cupping machine (2), the cupping machine (2) are oppositely arranged and solid with bar samples (01) both ends respectively including at least one set Surely the stretching clamp (21) and the driving for driving two stretching clamps (21) of same group close to each other or remote connected fills (22) are put, being respectively equipped with least part ring in two tip positions of the bar samples (01) is located on bar samples periphery Conducting ring (213), and the conducting ring (213) connects the positive and negative electrode of the pulse power (1) by wire (3) respectively；The opposite face opening of die cavity and two die cavities is equipped with for bar samples in two stretching clamps (21) with group (01) pass through, two insulation being oppositely arranged fixture blocks (211) be equipped with each die cavity, be oppositely arranged two insulation fixture blocks with Two stretching clamps being oppositely arranged are relative in different directions, are respectively equipped with the opposite face that two insulate fixture block (211) Neck, the positioning fixture block (212) that material rigidity is more than insulation fixture block (211) is equipped with each neck, in two locating clips Locating slot, the both ends of the bar samples (01) and the conducting ring located at its both ends are respectively equipped with the opposite face of block (212) (213) it is contained in the locating slot and is connected and fixed with it.
- 2. experimental rig according to claim 1, it is characterised in that the die cavity is wedge structure and two die cavities are narrower One end be oppositely arranged, it is described insulation fixture block (211) and die cavity inwall between activity space be present, the stretching clamp (21) is also wrapped Include and be arranged in die cavity and positioned at the tightening knob (214) of the wider one end of die cavity, the tightening knob (214) can be along bar samples Length direction move back and forth, and then drive it is described insulation fixture block (211) and die cavity inwall between compression or loosen；When described exhausted When edge fixture block (211) is extruded by die cavity inwall, two insulation fixture blocks being oppositely arranged are close to each other and by positioning fixture block (212) bar samples (01) are fixedly clamped.
- 3. experimental rig according to claim 2, it is characterised in that two insulation fixture blocks being oppositely arranged are symmetrical configuration Two insulation fixture blocks；Annular knurl anti-skid structure at least one is provided with the contact surface of the locating slot and bar samples (01).
- 4. experimental rig according to claim 3, it is characterised in that the insulation fixture block (211) and positioning fixture block (212) Between be connected by pin, and the pin-and-hole of position correspondence is had on fixture block (212) in insulation fixture block (211) and positioning.
- 5. experimental rig according to claim 4, it is characterised in that the material of the insulation fixture block (211) is asphalt mixtures modified by epoxy resin Fat, the material of the positioning fixture block (212) is steel plate, and the material of the conducting ring (213) is copper.
- 6. according to the experimental rig described in any one in claim 1-5, it is characterised in that the conducting ring (213) includes The not closed ring body that is set on bar samples (01) and the extension connecting pole for being arranged on the ring body opening, the wire (3) one end, which is bolted, to be arranged on the connecting pole.
- 7. according to the experimental rig described in any one in claim 1-5, it is characterised in that the experimental rig also includes surveying Warm device (4), the temperature measuring equipment (4) include data logger and the thermoelectricity directly contacted with bar samples (01) outer surface It is even, in order to monitor the surface temperature of sample in real time.
- 8. according to the experimental rig described in any one in claim 1-5, it is characterised in that the experimental rig is included at least One bar samples, the bar samples are metalwork, and the stage casing diameter of bar samples length direction is small, and bar samples are grown The both ends diameter for spending direction is big.
- 9. according to the experimental rig described in any one in claim 1-5, it is characterised in that at described two ends of bar samples Portion is not provided with being provided with annular knurl anti-skid structure on the periphery at conducting ring, and the annular knurl anti-skid structure of bar samples is arranged at ratio Center of the conducting ring closer to bar samples length direction.
- 10. experimental rig according to claim 9, it is characterised in that described on the length direction of the bar samples The length of the annular knurl anti-skid structure of bar samples is bigger than the length of the conducting ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711225627.7A CN107727510A (en) | 2017-11-29 | 2017-11-29 | A kind of experimental rig of pulse current auxiliary bar samples uniaxial tension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711225627.7A CN107727510A (en) | 2017-11-29 | 2017-11-29 | A kind of experimental rig of pulse current auxiliary bar samples uniaxial tension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107727510A true CN107727510A (en) | 2018-02-23 |
Family
ID=61220118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711225627.7A Pending CN107727510A (en) | 2017-11-29 | 2017-11-29 | A kind of experimental rig of pulse current auxiliary bar samples uniaxial tension |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107727510A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896384A (en) * | 2018-08-01 | 2018-11-27 | 吉林大学 | Wedge gripping jaw for the tension test that is powered |
| CN108896388A (en) * | 2018-07-04 | 2018-11-27 | 福州大学 | A kind of power-pulse current coupling laboratory holder |
| CN109738306A (en) * | 2019-03-12 | 2019-05-10 | 中南大学 | A kind of more sample tension and compression creep test devices |
| CN110216160A (en) * | 2019-05-24 | 2019-09-10 | 北京航空航天大学 | A kind of thin-walled capillary pipe electricity auxiliary extraction power-up device and method |
| CN111504797A (en) * | 2020-05-27 | 2020-08-07 | 黑龙江八一农垦大学 | Small diameter timber tension and compression strength measuring device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05232000A (en) * | 1991-03-13 | 1993-09-07 | Shimadzu Corp | Grasping tool for material tester |
| US20060180577A1 (en) * | 2005-02-11 | 2006-08-17 | Lindeman Norman A | Technique for applying direct resistance heating current to a specific location in a specimen under test while substantially reducing thermal gradients in the specimen gauge length |
| CN103926141A (en) * | 2014-04-21 | 2014-07-16 | 中南大学 | Fixture system for creep test |
| CN104502203A (en) * | 2015-01-08 | 2015-04-08 | 哈尔滨工业大学 | Testing device for current auxiliary type micro-stretching mechanical property of metal thin plate |
| CN104655484A (en) * | 2015-01-31 | 2015-05-27 | 江汉大学 | Clamp for electrified stretching |
| CN207472694U (en) * | 2017-11-29 | 2018-06-08 | 中南大学 | The experimental rig that a kind of pulse current auxiliary bar samples single shaft stretches |
-
2017
- 2017-11-29 CN CN201711225627.7A patent/CN107727510A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05232000A (en) * | 1991-03-13 | 1993-09-07 | Shimadzu Corp | Grasping tool for material tester |
| US20060180577A1 (en) * | 2005-02-11 | 2006-08-17 | Lindeman Norman A | Technique for applying direct resistance heating current to a specific location in a specimen under test while substantially reducing thermal gradients in the specimen gauge length |
| CN103926141A (en) * | 2014-04-21 | 2014-07-16 | 中南大学 | Fixture system for creep test |
| CN104502203A (en) * | 2015-01-08 | 2015-04-08 | 哈尔滨工业大学 | Testing device for current auxiliary type micro-stretching mechanical property of metal thin plate |
| CN104655484A (en) * | 2015-01-31 | 2015-05-27 | 江汉大学 | Clamp for electrified stretching |
| CN207472694U (en) * | 2017-11-29 | 2018-06-08 | 中南大学 | The experimental rig that a kind of pulse current auxiliary bar samples single shaft stretches |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896388A (en) * | 2018-07-04 | 2018-11-27 | 福州大学 | A kind of power-pulse current coupling laboratory holder |
| CN108896388B (en) * | 2018-07-04 | 2024-03-12 | 福州大学 | Force-pulse current coupling action experimental clamp |
| CN108896384A (en) * | 2018-08-01 | 2018-11-27 | 吉林大学 | Wedge gripping jaw for the tension test that is powered |
| CN108896384B (en) * | 2018-08-01 | 2020-11-27 | 吉林大学 | Wedge-shaped clamp jaw for electrification tensile test |
| CN109738306A (en) * | 2019-03-12 | 2019-05-10 | 中南大学 | A kind of more sample tension and compression creep test devices |
| CN110216160A (en) * | 2019-05-24 | 2019-09-10 | 北京航空航天大学 | A kind of thin-walled capillary pipe electricity auxiliary extraction power-up device and method |
| CN110216160B (en) * | 2019-05-24 | 2020-07-21 | 北京航空航天大学 | Thin-wall capillary tube electric auxiliary drawing power-up device and method |
| CN111504797A (en) * | 2020-05-27 | 2020-08-07 | 黑龙江八一农垦大学 | Small diameter timber tension and compression strength measuring device |
| CN111504797B (en) * | 2020-05-27 | 2023-03-14 | 黑龙江八一农垦大学 | Small diameter timber tension and compression strength measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107727510A (en) | A kind of experimental rig of pulse current auxiliary bar samples uniaxial tension | |
| CN207472694U (en) | The experimental rig that a kind of pulse current auxiliary bar samples single shaft stretches | |
| Lee et al. | Effects of intermetallic compound on the electrical and mechanical properties of friction welded Cu/Al bimetallic joints during annealing | |
| Han et al. | The fabrication, properties and microstructure of Cu–Ag and Cu–Nb composite conductors | |
| CN102735902B (en) | High-temperature superconducting wire tensile force testing device | |
| CN104181052A (en) | Method for testing mechanical property of braze welding connector | |
| US11782004B2 (en) | System for thermally influencing a crack tip of crack within a specimen and related methods | |
| CN207488076U (en) | The experimental rig that a kind of pulse current auxiliary plate tensile sample single shaft stretches | |
| CN104267061B (en) | Method and device for measuring weld thermal cycle temperature curve of steel plate | |
| Eslami et al. | Electrical and mechanical properties of friction stir welded Al-Cu butt joints | |
| JP2973832B2 (en) | Test method and test apparatus for semiconductor bump electrode | |
| DE102016124085B4 (en) | Apparatus and method for high temperature testing of material samples | |
| EP3540408A1 (en) | Method of manufacturing ctod test piece, and plastic strain adjusting jig | |
| CN208860296U (en) | A kind of model test strain brick sensor machine table | |
| Bardon | Estimation of thermal contact conductance during resistance spot welding | |
| Lawson et al. | Thermomechanical fatigue of a lead alloy | |
| CN209280481U (en) | A kind of heat simulating tester of rare earth permanent-magnetic material | |
| Olafsson et al. | Characterization of FSW of Aluminium to Copper for Electrical Busbars | |
| CN110595895A (en) | Structural steel welding heat affected zone tensile strength simulation test device and method | |
| Brittles et al. | Microstructural properties and magnetic testing of spot-welded joints between Nb–Ti filaments | |
| CN106855479B (en) | A method of determine amorphous alloy whether crystallization | |
| Tamaki et al. | Effect of carbon content and peritectic reaction on hot cracking of weld metal of high carbon steel | |
| Fujita et al. | Study on JIC Fracture Toughness in the Weld Heat-Affected Zone of a Structure Steel | |
| RU2034246C1 (en) | Method for fastening of thermocouples | |
| JP4534008B2 (en) | Non-melting joining method for dissimilar materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |