CN104515707A - Temperature measurement method for electrified tensile test piece and tensile test device - Google Patents

Temperature measurement method for electrified tensile test piece and tensile test device Download PDF

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Publication number
CN104515707A
CN104515707A CN201510012160.2A CN201510012160A CN104515707A CN 104515707 A CN104515707 A CN 104515707A CN 201510012160 A CN201510012160 A CN 201510012160A CN 104515707 A CN104515707 A CN 104515707A
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test specimen
temperature
test
tensile test
test pieces
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CN201510012160.2A
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Chinese (zh)
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王永军
孙宝龙
武伟超
王望
杨凯
刘天骄
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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Abstract

The invention discloses a temperature measurement method for electrified tensile test pieces and a tensile test device. An electronic universal testing machine with an insulating chuck is used for finishing an electrified unidirectional tensile test of metal test pieces and real-time measurement on the temperatures of the test pieces through thermocouple matching. The method comprises the steps: firstly spraying a protective agent to each of the test pieces to carry out anti-oxidization treatment; after the surface protective coating layers are naturally dried at a room temperature, performing insulating treatment on a thermocouple, clamping the two unidirectional tensile test pieces by the insulating chuck of the electronic universal testing machine, clamping the thermocouple between the two test pieces to ensure that the temperature measured by the thermocouple is the real temperatures of the center positions of the test pieces, electrifying a direct current power supply to heat the test pieces, and measuring the temperatures of the test pieces in real time by a thermocouple temperature measurer; after the test pieces reach the stable temperatures, switching on the electronic universal testing machine to carry out the unidirectional tensile test on the test pieces. Therefore, accurate temperature measurement on the unidirectional tensile test pieces can be guaranteed; furthermore, the test device is simple in structure, short in manufacturing period and low in cost.

Description

A kind of thermometry of the tensile test specimen that is energized and tensile test apparatus
Technical field
The present invention relates to metal material hot forming techniques field, specifically, relate to a kind of thermometry and tensile test apparatus of the tensile test specimen that is energized.
Background technology
For some structural metallic materials, at normal temperatures, their shaping is more difficult and springback capacity is large, but if thermoforming is carried out to blanks, then can greatly improve its forming property, resilience, wrinklingly substantially can to get rid of in heat forming processes, therefore to have occurred the material method for hot forming that heat radiation heating, heating by electric cooker, oxy-acetylene flame heating and resistance heated etc. are various.Resistance heated forming technology utilizes the heat conductivility of material is low, resistance coefficient is large characteristic by part to be processed self energising, is heated to forming temperature and the technique that is shaped.The advantage of resistance heated is that the workpiece place time is at high temperature short, can reduce oxygen contamination and not need pickling descaling operation, material can be avoided to be subject to hydrogen contamination, and meanwhile, resistance heated also can avoid the thermal loss produced due to transmission part.
In order to study the thennoforming performance of metal material, the metal material that especially heat conductivility is low, resistance coefficient is large, is necessary to carry out resistance heated tension test to test specimen; Resistance heated tension test refers to the characteristic that the heat conductivility utilizing some materials is low, resistance coefficient is large, by test specimen to be processed self energising, is heated to forming temperature after stretching test specimen until the test of fracture.Obtain metal material at high temperature mechanical property parameters, the thermoforming behavior for further research material provides basis.
Carrying out in energising tension test to test specimen, patent of invention CN1O3543073A " a kind of measuring mechanical property of shape memory alloy wire material and heat engine trainer " discloses a kind of measuring mechanical property and heat engine trainer of shape memory alloy wire material, it comprises data acquisition control system, driving stepper motor module, power acquisition module, energy supply control module and temperature-measuring module, the LabView customization graphical interface program write is utilized to realize rotating speed and the rotation displacement of control step motor, and can feed back according to the signal of pulling force sensor and temperature acquisition card Real-time Collection, realize the measuring mechanical property to shape memory alloy wire material, the automatic operating function of heat engine training, but have the following disadvantages, when temperature survey, by thermopair and shape memory alloy wire material surface contact to be tested, can because the continuous change of outside air flowing and contact condition makes measured temperature and test specimen actual temperature produce larger difference in drawing process, in addition, the fixed form of thermopair easily comes off when temperature is higher according to adhesive bonding method, according to welding manner then complicated operation and affect thermopair sensitivity.Therefore, a kind of method solving the energising temperature Measurement accuracy of tensile test specimen and the installation fixation problem of thermopair is badly in need of.
Summary of the invention
In order to the installation fixation problem of the temperature Measurement accuracy and thermopair that solve in prior art the tensile test specimen that is energized, the present invention proposes a kind of thermometry and tensile test apparatus of the tensile test specimen that is energized.For metal specimen energising one directional tensile test, provide the temperature measured by a kind of thermopair to be the method for test specimen center true temperature, can not only test specimen temperature survey be drawn accurate by bonding, facilitate the fixing of thermopair, and tensile test apparatus structure is simple, the manufacturing cycle is short, with low cost.
The technical solution adopted for the present invention to solve the technical problems is: a kind of thermometry of the tensile test specimen that is energized, is characterized in that comprising the following steps:
Step 1. tension test prepares; Select metal specimen, spray anti-oxidation protective agent in surface of test piece, and adopt high temperature resistant inorganic insulating gel to carry out insulation processing to thermopair; Insulation chuck is adopted singly to draw test specimen to carry out clamping to two, and the mode adopting two test specimen compounds to stretch, thermopair is placed on two and singly draws in the middle of test specimen, thermoelectric couple clamp is held in the middle of two test specimens by the power of tightening after utilizing test specimen to stretch;
Step 2. tension test setting parameter; Passing into direct current to test specimen before stretching makes test specimen temperature stabilization at design temperature; Set temperature is determined according to the feature of metal material and testing requirements, the conveniently draw speed of test method determination universal testing machine;
Step 3. electrified regulation test specimen; Opening device power supply, direct current is passed into test specimen, by the temperature real-time measurement of thermocouple temperature measurement instrument to test specimen, a temperature data is gathered every 3s, and continue to increase current value, test specimen is constantly heated up, and reach after the temperature required in advance until test specimen temperature, waiting temperature starts tension test after stablizing 3min;
Step 4. carries out tension test; Start electronic universal tester, one directional tensile test is carried out to test specimen; In the process stretched, cross-sectional area in specimen equidistance line marking region reduces gradually, and tensile test specimen produces a small amount of constriction in gauge length section generation unstability, if the electric current passing into test specimen is constant, the current density then flowing through test specimen increases, cause tensile test specimen temperature to produce fluctuation, the current value that power supply is current can be turned down, make test specimen temperature stabilization at design temperature, thermopair records a Temperature numerical every 3s, until test specimen fracture, closing device power supply, off-test.
A kind of tensile test apparatus carrying out energising tensile test specimen for described thermometry, electronic universal tester adopts CSS-44100 type, the moved cross beam of electronic universal tester is positioned at the below of entablature, tensile test apparatus is between entablature and moved cross beam, be characterized in: tensile test apparatus comprises insulation chuck, lower insulation chuck, connecting pin, supply unit, thermocouple temperature measurement instrument, thermocouple probe, upper connecting rod, insulcrete, grip block, lower link, upper connecting rod and the entablature of upper insulation chuck are connected by connecting pin, lower link and the moved cross beam of lower insulation chuck are connected by connecting pin, upper insulation chuck, lower insulation chuck is connected respectively by the two ends of the grip block connected separately and test specimen, thermocouple probe is clamped in the middle part of two test specimens, thermocouple probe is connected with thermocouple temperature measurement instrument, two wires of supply unit are connected on the grip block of insulation chuck and the grip block of lower insulation chuck, described insulcrete is rectangular parallelepiped, and there is projection end, and the two ends of two pieces of insulcretes are connected with grip block, upper connecting rod respectively, and grip block is positioned at the projection position of insulcrete, the bare terminal end of grip block has U-shaped jaws, described upper connecting rod is T-shaped structure, and the wide end of upper connecting rod is fixed between two pieces of insulcretes, and the thickness of upper connecting rod is identical with the thickness of grip block, described lower link one end is flat board, the other end is stepped appearance round bar structure, there is through hole at round bar end and the close dull and stereotyped position of lower link respectively, the dull and stereotyped position of lower link is fixed between two pieces of insulcretes, and the thickness at the dull and stereotyped position of lower link is identical with the thickness of grip block.
Beneficial effect
The present invention is energized the thermometry of tensile test specimen and tensile test apparatus, by the one directional tensile test that is energized to metal specimen, the temperature measured by a kind of thermopair is provided to be the method for test specimen center true temperature, not only singly draw test specimen temperature survey accurate, facilitate the fixing of thermopair, and tensile test apparatus structure is simple.First, anti-oxidation process is carried out to test specimen, after the at room temperature drying of surface of test piece protective coating, insulation processing is carried out to thermopair; Adopt the mode that two test specimen compounds stretch, thermoelectric couple clamp is held in two singly to draw in the middle of test specimen, test specimen is singly drawn to carry out clamping by the insulation chuck of electronic universal tester to two, thermopair is securely held in the middle of two test specimens by the power of tightening after utilizing test specimen to stretch, efficiently solve and adopt adhesive bonding method easily to come off when temperature is higher, or adopt the complicated operation that welding manner brings and the problem affecting thermopair sensitivity; Simultaneously, avoid thermopair and test specimen surface contact to be measured directly, because outside air flowing and the continuous change of contact condition make measured temperature and test specimen actual temperature produce larger difference in drawing process, the temperature that ensure that measured by thermopair is the true temperature in test specimen centre.By thermocouple temperature measurement instrument to test specimen temperature real-time measurement, reach after equilibrium temperature until test specimen, start electronic universal tester and carry out test specimen one directional tensile test.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the thermometry of a kind of tensile test specimen that is energized of the present invention and tensile test apparatus are described in further detail.
Fig. 1 is tensile test apparatus schematic diagram of the present invention.
Fig. 2 (a) (b) is two test specimen compound stretching mode schematic diagram.
Fig. 3 is upper insulation chuck schematic diagram of the present invention.
Fig. 4 is upper insulation chuck explosive view of the present invention.
Fig. 5 is lower insulation chuck schematic diagram of the present invention.
Fig. 6 is lower insulation chuck explosive view of the present invention.
Fig. 7 is that the present invention is energized under differently strained speed the stress-strain curve diagram stretched in an embodiment.
In figure:
1. entablature 2. connecting pin 3. insulate connecting rod 11. insulcrete 12. grip block 13. lower link on chuck 4. test specimen 401. test specimen (a) 402. test specimen (b) 5. times insulation chuck 6. moved cross beam 7. supply unit 8. thermocouple temperature measurement instrument 9. thermocouple probes 10.
Embodiment
The present embodiment is a kind of thermometry and tensile test apparatus of the tensile test specimen that is energized, and coordinates the real-time measurement to complete metal material test specimen energising one directional tensile test and test specimen temperature with the electronic universal tester of insulation chuck by thermopair.First, anti-oxidation process is carried out to metal material test specimen, at two anti-oxidation protective agents of surface of test piece even application, after surface protection coating at room temperature natural drying, by testing machine chuck, clamping is carried out to test specimen; Then, insulation processing is carried out to thermopair, after high temperature resistant inorganic insulating gel being mixed according to request for utilization, thermopair is smeared one deck insulating gel, be cured according to high temperature inorganic insulating gel condition of cure, complete thermopair insulation processing, prevent being clamped in two and singly draw the thermopair in the middle of test specimen to produce measurement drift due to Insulation Problems.Test specimen is singly drawn to carry out clamping by the insulation chuck of electronic universal tester to two, and adopt the mode that two test specimen compounds stretch, thermoelectric couple clamp is held in two singly to draw in the middle of test specimen, thermoelectric couple clamp is held in the middle of two test specimens by the power of tightening after utilizing test specimen to stretch, not only facilitate thermopair to fix, and the temperature that ensure that measured by thermopair is the true temperature of test specimen center.
Consult Fig. 1 ~ Fig. 7, electronic universal tester adopts CSS-44100 type, and the moved cross beam 6 of electronic universal tester is positioned at the below of entablature 1, and tensile test apparatus is arranged between entablature 1 and moved cross beam 6.Tensile test apparatus comprises insulation chuck 3, lower insulation chuck 5, connecting pin 2, supply unit 7, thermocouple temperature measurement instrument 8, thermocouple probe 9, upper connecting rod 10, insulcrete 11, grip block 12, lower link 13; Upper connecting rod 10 and the entablature 1 of upper insulation chuck 3 are connected by connecting pin 2, the lower link 13 of lower insulation chuck 5 is fixedly connected with by connecting pin 2 with moved cross beam 6, and upper insulation chuck 3, lower insulation chuck 5 are fixedly connected with the two ends of test specimen 4 respectively by the grip block 12 connected separately; Test specimen 4 is made up of the identical test specimen (a) 401 of two structures and test specimen (b) 402, there is circular hole at test specimen 4 two ends, test specimen 4 upper end is fastened by bolts on the grip block 12 of upper insulation chuck 3, and test specimen 4 lower end is fastened by bolts on the grip block 12 of lower insulation chuck 5.During stretching, entablature 1 keeps motionless, moved cross beam 6 moves down, complete one directional tensile test, thermocouple probe 9 is clamped in the middle part of test specimen (a) 401 and test specimen (b) 402, thermocouple probe 9 is connected with thermocouple temperature measurement instrument 8, and the temperature of singly drawing test specimen 4 measured by thermocouple temperature measurement instrument 8 by thermocouple probe 9.Two wires of supply unit 7 are separately fixed at the grip block of insulation chuck 3 and the grip block edge of lower insulation chuck 5.
Insulcrete 11 is rectangular parallelepiped, there is projection end, there is screw at the two ends of insulcrete 11, the two ends of two pieces of insulcretes 11 are connected with grip block 12, upper connecting rod 10 respectively, and grip block 12 is arranged on the projection position of insulcrete, and upper connecting rod 10 is arranged on the other end of insulcrete 11, the bare terminal end of grip block 12 has U-shaped jaws, spacing between clamp mouth part inside surface is determined according to the thickness of clamped tensile test specimen, and due to the mode that the present embodiment adopts two test specimen compounds to stretch, the aperture pitch of jaws is 7mm.Insulcrete 11 adopts organic glass to make.Grip block 12 adopts No. 45 steel to make.Upper connecting rod 10 is T-shaped structure, and the wide end of upper connecting rod is fixed between two pieces of insulcretes, and the thickness of upper connecting rod is identical with the thickness of grip block; Upper connecting rod 10 other end there is connecting hole.
Lower insulation chuck 5 and upper insulation chuck 3 have identical grip block 12 and insulcrete 11, and lower insulation chuck 5 and the difference of upper insulation chuck 3 are that lower link 13 is different with the structure of upper connecting rod 10.Lower link 13 one end is dull and stereotyped, the other end is stepped appearance round bar structure, there is through hole at round bar end and the close dull and stereotyped position of lower link 13 respectively, and the dull and stereotyped position of lower link is fixed between two pieces of insulcretes, and the thickness at the dull and stereotyped position of lower link 13 is identical with the thickness of grip block 12.The round bar length of lower link and physical dimension coordinate with the moved cross beam of electronic universal tester, by the pin installed, realize the location between lower insulation chuck 5 and electronic universal tester moved cross beam 6, lower insulation chuck 5 is arranged on electronic universal tester moved cross beam 6 also fixing by connecting pin 2.
In the present embodiment, unilateral stretching test specimen is the TC4 titanium-alloy thin-plate that 3.5mm is thick, and therefore, the thickness of test specimen 4 is 7mm, according to the relevant regulations of national standard " GB6397-86 metal tensile test sample ", the physical size of foundation titanium alloy plate determines the overall dimension of each test specimen simultaneously.Singly draw test two ends to have diameter to be the fixed orifice of 8.5mm, the distance apart from end face is 15mm, in order to fix test specimen 4 in drawing process.Single test specimen overall length is 130mm, and the gauge length section width of tensile test specimen is 6mm, and gauge length segment length is 50mm, and the width of tensile test specimen retained part is 20mm, and the radius of knuckle is 10mm.
The thermometry of the present embodiment energising tensile test specimen, concrete steps are as follows:
The first step, tension test prepares; Measure the initial dimensional data that two are singly drawn test specimen, at the anti-oxidation protective agent of surface of test piece spraying titania, after surface protection coating at room temperature natural drying, carry out test specimen clamping, carry out follow-up test.Then, adopt high temperature resistant inorganic insulating gel to carry out insulation processing to thermopair, the high temperature resistant inorganic insulating gel adopted is DB5012, and its chemical composition SiO2 is insulating material, it can tolerate the high temperature of 1700 DEG C, according to high temperature inorganic insulating gel condition of cure, after the thermopair of insulation processing is placed 24 hours at normal temperatures, then constant temperature places 2 hours in the heating furnace of 80 DEG C, thereafter, in 120 DEG C, be incubated 2 hours again, make inorganic insulation adhesive curing thorough, complete thermopair insulation processing process.Finally, insulation chuck is adopted singly to draw test specimen to carry out clamping to two, and the mode adopting two test specimen compounds to stretch, thermoelectric couple clamp is held in two and singly draws in the middle of test specimen, thermoelectric couple clamp is held in the middle of two test specimens by the power of tightening after utilizing two test specimens to stretch.
Second step, tension test setting parameter; Before starting tensile test specimen, pass into direct current to test specimen and make test specimen temperature stabilization at design temperature, set temperature is determined according to the feature of titanium alloy material and testing requirements, and the present embodiment design temperature is 700 DEG C.The present embodiment adopts three kinds of different strain rates to stretch, and three kinds of strain rates are 0.33 × 10 -3s -1, 1.67 × 10 -3s -1, and 8.33 × 10 -3s -1.Wherein, strain rate is 0.33 × 10 -3s -1the draw speed of corresponding universal testing machine is 1mm/min, and strain rate is 1.67 × 10 -3s -1the draw speed of corresponding universal testing machine is 5mm/min, and strain rate is 8.33 × 10 -3s -1the draw speed of corresponding universal testing machine is 25mm/min.By carrying out above-mentioned test, obtain the stress and strain relationship curve of titanium alloy 700 DEG C time under differently strained speed.
3rd step, electrified regulation test specimen; Opening device power supply, passes to direct current to test specimen, the surface temperature of thermopair Real-Time Monitoring test specimen, gathers a temperature data every 3s.Then continue to increase current value, test specimen is constantly heated up, after the temperature of test specimen reaches the 700 DEG C of temperature preset, waiting temperature starts tension test after stablizing 3min.
4th step, carries out tension test; After the temperature of tensile test specimen reaches 700 DEG C and be stable, start electronic universal tester, one directional tensile test is carried out to test specimen.In the process stretched, cross-sectional area in specimen equidistance line marking region reduces gradually, and tensile test specimen produces a small amount of constriction, if the electric current passing into test specimen is constant in gauge length section generation unstability, the current density then flowing through test specimen increases, and tensile test specimen temperature can be caused slightly to rise and then produce fluctuation.Now, the current value that power supply is current can be turned down, generally turn down 2A-6A, make test specimen temperature stabilization at 700 DEG C, and adopt thermopair to record a Temperature numerical every 3s, and until test specimen fracture, closing device power supply, after the cooling of test specimen temperature, take off the test specimen after breaking, terminate test.

Claims (2)

1. be energized the thermometry of tensile test specimen, it is characterized in that comprising the following steps:
Step 1. tension test prepares; Select metal specimen, spray anti-oxidation protective agent in surface of test piece, and adopt high temperature resistant inorganic insulating gel to carry out insulation processing to thermopair; Insulation chuck is adopted singly to draw test specimen to carry out clamping to two, and the mode adopting two test specimen compounds to stretch, thermopair is placed on two and singly draws in the middle of test specimen, thermoelectric couple clamp is held in the middle of two test specimens by the power of tightening after utilizing test specimen to stretch;
Step 2. tension test setting parameter; Passing into direct current to test specimen before stretching makes test specimen temperature stabilization at design temperature; Set temperature is determined according to the feature of metal material and testing requirements, the conveniently draw speed of test method determination universal testing machine;
Step 3. electrified regulation test specimen; Opening device power supply, direct current is passed into test specimen, by the temperature real-time measurement of thermocouple temperature measurement instrument to test specimen, a temperature data is gathered every 3s, and continue to increase current value, test specimen is constantly heated up, and reach after the temperature required in advance until test specimen temperature, waiting temperature starts tension test after stablizing 3min;
Step 4. carries out tension test; Start electronic universal tester, one directional tensile test is carried out to test specimen; In the process stretched, cross-sectional area in specimen equidistance line marking region reduces gradually, and tensile test specimen produces a small amount of constriction in gauge length section generation unstability, if the electric current passing into test specimen is constant, the current density then flowing through test specimen increases, cause tensile test specimen temperature to produce fluctuation, the current value that power supply is current can be turned down, make test specimen temperature stabilization at design temperature, thermopair records a Temperature numerical every 3s, until test specimen fracture, closing device power supply, off-test.
2. one kind is carried out the tensile test apparatus of energising tensile test specimen for thermometry described in claim 1, electronic universal tester adopts CSS-44100 type, the moved cross beam of electronic universal tester is positioned at the below of entablature, tensile test apparatus is between entablature and moved cross beam, it is characterized in that: tensile test apparatus comprises insulation chuck, lower insulation chuck, connecting pin, supply unit, thermocouple temperature measurement instrument, thermocouple probe, upper connecting rod, insulcrete, grip block, lower link, upper connecting rod and the entablature of upper insulation chuck are connected by connecting pin, lower link and the moved cross beam of lower insulation chuck are connected by connecting pin, upper insulation chuck, lower insulation chuck is connected respectively by the two ends of the grip block connected separately and test specimen, thermocouple probe is clamped in the middle part of two test specimens, thermocouple probe is connected with thermocouple temperature measurement instrument, two wires of supply unit are connected on the grip block of insulation chuck and the grip block of lower insulation chuck, described insulcrete is rectangular parallelepiped, and there is projection end, and the two ends of two pieces of insulcretes are connected with grip block, upper connecting rod respectively, and grip block is positioned at the projection position of insulcrete, the bare terminal end of grip block has U-shaped jaws, described upper connecting rod is T-shaped structure, and the wide end of upper connecting rod is fixed between two pieces of insulcretes, and the thickness of upper connecting rod is identical with the thickness of grip block, described lower link one end is flat board, the other end is stepped appearance round bar structure, there is through hole at round bar end and the close dull and stereotyped position of lower link respectively, the dull and stereotyped position of lower link is fixed between two pieces of insulcretes, and the thickness at the dull and stereotyped position of lower link is identical with the thickness of grip block.
CN201510012160.2A 2015-01-12 2015-01-12 Temperature measurement method for electrified tensile test piece and tensile test device Pending CN104515707A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105004610A (en) * 2015-09-09 2015-10-28 海安县石油科研仪器有限公司 Device for tensile test of metal material under function of current
CN105259048A (en) * 2015-11-02 2016-01-20 上海交通大学 Real-time detecting device and method applied to sheet three-point bending performance test
CN105651617A (en) * 2015-12-31 2016-06-08 内蒙古科技大学 Treatment method for preventing fracture melting of tensile sample
CN106289999A (en) * 2016-07-29 2017-01-04 重庆大学 Metal material Mechanics Performance Testing equipment under the high temperature conditions and method of testing thereof
CN107703001A (en) * 2017-10-16 2018-02-16 国网吉林省电力有限公司电力科学研究院 The method of testing of operational factor during a kind of power transmission and transforming equipment copper conductor fracture
CN107894366A (en) * 2017-09-30 2018-04-10 重庆鸽牌电线电缆有限公司 A kind of trapezoidal copper bar stretching test method
CN108896384A (en) * 2018-08-01 2018-11-27 吉林大学 Wedge gripping jaw for the tension test that is powered
CN109991065A (en) * 2019-05-05 2019-07-09 中国人民解放军陆军装甲兵学院 The coating spraying method of matrix of samples for the observation of coating material original position stretching
CN110849737A (en) * 2019-10-14 2020-02-28 北京航空航天大学 Electric auxiliary single-pull test temperature control device and use method thereof
CN110849704A (en) * 2019-10-30 2020-02-28 太原理工大学 Test device for measuring mechanical property of material under action of pulse current

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CN103543073A (en) * 2013-09-26 2014-01-29 南京航空航天大学 Mechanical performance test and heat engine training device for shape memory alloy wires
CN103900911A (en) * 2014-04-09 2014-07-02 西北工业大学 Electrified thermal stretching testing device and stretching testing method
CN204034118U (en) * 2014-07-30 2014-12-24 中国联合工程公司 The fire-fighting spraying equipment of a kind of charcoal absorption and desorption catalyzing burner

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JPS5726728A (en) * 1980-07-24 1982-02-12 Nippon Telegr & Teleph Corp <Ntt> Tension test piece for metallic material
CN102062713A (en) * 2010-12-10 2011-05-18 浙江华电器材检测研究所 Device for testing high-temperature load-carrying properties of aluminum and aluminum alloy electric power apparatuses of power transmission line
CN103543073A (en) * 2013-09-26 2014-01-29 南京航空航天大学 Mechanical performance test and heat engine training device for shape memory alloy wires
CN103900911A (en) * 2014-04-09 2014-07-02 西北工业大学 Electrified thermal stretching testing device and stretching testing method
CN204034118U (en) * 2014-07-30 2014-12-24 中国联合工程公司 The fire-fighting spraying equipment of a kind of charcoal absorption and desorption catalyzing burner

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105004610A (en) * 2015-09-09 2015-10-28 海安县石油科研仪器有限公司 Device for tensile test of metal material under function of current
CN105259048A (en) * 2015-11-02 2016-01-20 上海交通大学 Real-time detecting device and method applied to sheet three-point bending performance test
CN105651617A (en) * 2015-12-31 2016-06-08 内蒙古科技大学 Treatment method for preventing fracture melting of tensile sample
CN105651617B (en) * 2015-12-31 2018-07-24 内蒙古科技大学 A kind of processing method for preventing tensile sample fracture from melting
CN106289999A (en) * 2016-07-29 2017-01-04 重庆大学 Metal material Mechanics Performance Testing equipment under the high temperature conditions and method of testing thereof
CN107894366A (en) * 2017-09-30 2018-04-10 重庆鸽牌电线电缆有限公司 A kind of trapezoidal copper bar stretching test method
CN107894366B (en) * 2017-09-30 2020-08-11 重庆鸽牌电线电缆有限公司 Trapezoidal copper bar tensile test method
CN107703001A (en) * 2017-10-16 2018-02-16 国网吉林省电力有限公司电力科学研究院 The method of testing of operational factor during a kind of power transmission and transforming equipment copper conductor fracture
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
CN109991065A (en) * 2019-05-05 2019-07-09 中国人民解放军陆军装甲兵学院 The coating spraying method of matrix of samples for the observation of coating material original position stretching
CN110849737A (en) * 2019-10-14 2020-02-28 北京航空航天大学 Electric auxiliary single-pull test temperature control device and use method thereof
CN110849704A (en) * 2019-10-30 2020-02-28 太原理工大学 Test device for measuring mechanical property of material under action of pulse current

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