CN113092861A - Detection clamp and detection system - Google Patents
Detection clamp and detection system Download PDFInfo
- Publication number
- CN113092861A CN113092861A CN201911343155.4A CN201911343155A CN113092861A CN 113092861 A CN113092861 A CN 113092861A CN 201911343155 A CN201911343155 A CN 201911343155A CN 113092861 A CN113092861 A CN 113092861A
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- detection
- fixing
- fixing base
- guide rail
- temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to the technical field of material structure performance detection, and discloses a detection clamp and a detection system. The detection clamp comprises: the clamping seat comprises a guide rail and at least two fixed seats arranged at intervals, the fixed seats can slide along the guide rail, the fixed seats are insulated from the guide rail, and each fixed seat is provided with a measured piece accommodating part insulated from a measured piece and a fixed groove for installing a temperature measuring device; the terminal, four at least terminals are arranged respectively on the fixing base, two of one side the terminal can be followed the length direction of guide rail removes for two terminals of other one side, terminal one end is worn to locate the fixing base and can the butt in to receive the piece, the other end is followed the fixing base top is stretched out. The detection clamp for clamping the tested piece is placed in an extremely-warm heat preservation or temperature abrupt change environment, and the detection system outputs temperature, resistivity or conductivity information and related curves at different time, so that the change of the tissue performance of the tested piece is analyzed.
Description
Technical Field
The invention relates to the technical field of material structure change and performance detection, in particular to a detection clamp and a detection system.
Background
The resistivity or conductivity (reciprocal of resistivity) of the conventional conductive material is generally measured at normal temperature (usually about 20 ℃), and the resistivity or conductivity at other temperatures than normal temperature is measured by using the formula ρ (T) ═ ρ (T)0)[1+α(T-T0)]Calculated as where ρ (T)0) At room temperature T0Corresponding resistivity, α is the characteristic temperature vs. resistivityThe influence coefficient, the resistivity of an ideal metal, is linear with temperature, i.e., α is constant. However, the resistivity or conductivity is affected by the crystal structure in the metal, all factors destroying the periodicity of the lattice field can shorten the mean free path of the carrier electrons, alpha is not constant, and therefore the resistivity or conductivity calculated according to the above formula at non-normal temperature is not a true value.
The resistivity is a sensitive parameter of the tissue structure, the change of the crystal structure and the tissue of the material can be determined according to the change of the resistivity, and then the performance of the material can be determined, but the requirement on a detection clamp and a detection system is extremely high, and particularly, the clamp used in complex environments such as large-range alternating change of temperature, rapid temperature rise and drop and the like is easy to deform and damage, and further the detection precision is influenced. Aiming at the problems in the prior art, the fixture and the detection system which can be suitable for non-normal temperature and large temperature change range are developed, and the method has important significance for accurately detecting the change of the tissue performance in the temperature change process.
Disclosure of Invention
The invention aims to provide a detection clamp and a detection system, which solve the problem that the prior art cannot detect the dynamic resistivity or the dynamic conductivity of a material in an extremely-warm and large-range temperature change environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a detection clamp, comprising:
the clamping seat comprises a guide rail and at least two fixed seats arranged at intervals, the fixed seats can slide along the guide rail, the fixed seats are insulated from the guide rail, and each fixed seat is provided with a measured piece accommodating part insulated from a measured piece and a fixed groove for installing a temperature measuring device;
the terminal, four at least terminals are arranged respectively on the fixing base, two of one side the terminal can be followed the length direction of guide rail removes for two terminals of other one side, terminal one end is worn to locate the fixing base and can the butt in to receive the piece, the other end is followed the fixing base top is stretched out.
As an optimal scheme of the above detection fixture, the fixing base is provided with four fixing bases, each fixing base is provided with a binding post, and the fixing base slides along the guide rail and drives the binding posts to move.
As a preferable scheme of the above detection fixture, the fixing base is provided with a mounting groove for mounting the accommodating portion of the test piece, the mounting groove is disposed above the fixing groove, and the fixing groove is communicated with the mounting groove.
As a preferable mode of the above detection jig, the mounting groove is provided along a length direction of the guide rail, and the test piece accommodating portion can slide in or out along the length direction of the mounting groove.
As a preferable mode of the above test jig, the terminal is in point contact with the device under test.
As an optimal scheme of above-mentioned detection anchor clamps, still include insulating portion, insulating portion is provided with the fixed orifices, the fixing base be provided with the wear-to-establish hole that the fixed orifices corresponds, the terminal is worn to locate the wear-to-establish hole reaches the fixed orifices with receive the piece butt, insulating portion set up in the fixing base.
As a preferable mode of the above detection jig, the guide rail is made of an insulating material.
The invention also provides a detection system which comprises the detection clamp.
As a preferable aspect of the above detection system, the method includes:
the voltage detection device is connected with the middle two binding posts of the four binding posts of the detection clamp through conducting wires;
the constant current device is connected with two binding posts on the outer sides of the four binding posts of the detection clamp through conducting wires;
the temperature measuring probe of the temperature measuring device is arranged in the fixing groove of the detection clamp;
and the temperature adjusting and controlling device is used for heating, cooling or preserving the temperature of the tested piece clamped by the detection clamp.
As a preferable scheme of the above detection system, the detection system further includes a signal acquisition and processing device, the voltage detection device and the temperature measurement device are both connected to the signal acquisition and processing device, and the signal acquisition and processing device is configured to acquire signals of the voltage detection device and the temperature measurement device, process the signals and output the signals.
The invention has the beneficial effects that:
the detection clamp can clamp a tested piece and can be placed in an environment with non-normal temperature heat preservation, large-range temperature change and rapid temperature change, and the requirement of the length change of the tested piece can be met by adjusting the distance between the fixing seats.
The detection system can detect the temperature and voltage signals of the tested piece at different time, process and output relevant information and curves according to real-time information, and can analyze the change of the tissue performance of the tested piece.
The test piece can be either a production workpiece or a test specimen, and the range of detectable materials is wide, including but not limited to copper and its alloys, aluminum and its alloys, iron and its alloys, titanium and its alloys, magnesium and its alloys, conductive carbon materials, semiconductors, superconductors.
Drawings
Fig. 1 is a schematic structural diagram of the test fixture clamping a tested object according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating a fixing block of the detection fixture and a connection between the fixing block and a guide rail according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of the test piece accommodating portion according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another accommodating portion of a test piece according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of the test fixture for clamping a test object according to the second embodiment of the present invention;
fig. 6 is a schematic view illustrating a fixing block of the detection fixture and a connection between the fixing block and a guide rail according to the second embodiment of the present invention;
fig. 7 is a schematic structural diagram of the insulating part according to the second embodiment of the present invention;
FIG. 8 is a resistivity-temperature curve of 7B50 aluminum alloy during continuous cooling as measured by a detection system provided by the present invention;
figure 9 is a graph of conductivity versus time measured by a detection system provided by the present invention during solutionizing and subsequent cooling of an aluminum lithium alloy 2297.
In the figure:
1. a clamping seat; 11. a guide rail; 12. a fixed seat; 121. fixing grooves; 122. mounting grooves; 123. mounting holes; 124. perforating holes;
2. a measuring piece accommodating part; 21. a measuring piece placing groove;
3. a binding post;
4. a temperature measuring device;
5. a tested piece;
6. a fixing member;
7. an insulating section; 71. and (7) fixing holes.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The first embodiment is as follows:
the embodiment provides a detection clamp, as shown in fig. 1 and fig. 2, the detection clamp comprises a clamping seat 1, a measured piece accommodating part 2 and a binding post 3, the clamping seat 1 comprises a guide rail 11 and at least two fixing seats 12 arranged at intervals, the fixing seats 12 can slide along the guide rail 11, the fixing seats 12 are insulated from the guide rail 11, each fixing seat 12 is provided with a measured piece accommodating part 2 insulated from a measured piece 5 and a fixing groove 121 for installing a temperature measuring device 4; the four binding posts 3 are respectively arranged on the fixed seat 12, and the two binding posts 3 on one side can move relative to the two binding posts 3 on the other side along the length direction of the guide rail 11; one end of the binding post 3 penetrates through the fixed seat 12 and can be abutted against the tested piece 5, and the other end of the binding post extends out of the upper part of the fixed seat 12.
The detection clamp can clamp a tested piece 5, and the tested piece 5 is insulated from the fixed seat 12 by arranging the insulated tested piece accommodating part 2; set up two fixing bases 12 at least and can follow guide rail 11 and slide, can be applicable to the not detection that different length receives workpiece 5 through adjusting the distance between fixing base 12. The detection clamp is placed in an environment with non-normal temperature and large-range temperature change, so that the resistivity or the conductivity of the material at different temperatures and in the process of rapid temperature change can be detected, and the dynamic resistivity or the conductivity of the material at different times in the heat preservation process can also be detected, namely the resistivity or the conductivity at different times in the processes of temperature rise, temperature drop and heat preservation is detected.
The test object 5 may be either a production work piece or an inspection sample, and the test material includes, but is not limited to, copper and its alloys, aluminum and its alloys, iron and its alloys, magnesium and its alloys, titanium and its alloys, conductive carbon materials, semiconductors, superconductors.
Optionally, the fixing base 12 can be set to two, two terminals 3 are disposed on each fixing base 12, and if a plurality of terminals 3 are disposed on the same fixing base 12, the plurality of terminals 3 are disposed in an insulating manner. The fixing base 12 can also be provided with three, four, five, six, etc. In this embodiment, the fixing base 12 is set to four, each fixing base 12 is provided with one binding post 3, and the fixing base 12 slides along the guide rail 11 and drives the binding post 3 to move.
In this embodiment, the terminal 3 is in point contact with the device under test 5. The point contact means that the contact area of the binding post 3 and the tested piece 5 is less than or equal to 25mm2Preferably 9mm or less2More preferably 1mm or less2The contact area of the binding post 3 and the tested piece 5 is smaller, the measurement precision is higher, however, the phenomena that the binding post 3 leaves scratches on the tested piece 5, the contact is poor in the test process, the length of a test area is changed and the like are avoided.
Of course, the wiring terminal 3 and the tested piece 5 can be in line contact or surface contact.
Optionally, the fixing base 12 of the holder 1 is preferably made of a metal material, and in this embodiment, the fixing base 12 is made of a copper alloy material, so that the heat conductivity and the heat resistance are good. The fixing base 12 may be made of other materials as long as the strength is sufficient and the heat resistance is good.
The guide rails 11 are arranged in parallel, and may be two, three or four, and this embodiment is provided with two guide rails, and the two guide rails sequentially penetrate through the plurality of fixing seats 12. The guide rail 11 is fixed on the fixing seat 12 through the fixing part 6, and the guide rail 11 is an insulating guide rail, in this embodiment, the insulating guide rail is made of quartz, and the insulating guide rail can also be made of other materials as long as the insulating and heat-resisting materials are adopted.
Further, all be equipped with on every fixing base 12 and be used for the installation to survey a mounting groove 122 of holding portion 2, mounting groove 122 set up in fixed slot 121 top, fixed slot 121 with mounting groove 122 communicates with each other, and mounting groove 122 sets up along the length direction of guide rail 11, surveys a length direction that holding portion 2 can follow mounting groove 122 and slides in or the roll-off. In this embodiment, survey a design that a portion 2 is independent of holder 1 and can detect different specifications by measuring 5 under the condition of not changing fixing base 12, two measuring 5 between fixing base 12 directly arrange in the detection environment, can make by measuring 5 rapid heating up and rapid cooling.
The measuring piece accommodating parts 2 can be arranged at intervals, and one measuring piece accommodating part 2 is arranged in each fixed seat 12; the measuring part accommodating part 2 can also be of an integral structure, and the integral measuring part accommodating part 2 sequentially penetrates through the fixed seat 12.
Further, as shown in fig. 1 and fig. 3, the test piece accommodating portion 2 is provided with a test piece placing groove 21, the test piece 5 is placed in the test piece placing groove 21, and the test piece placing groove 21 is provided to prevent the test piece 5 from contacting the fixing base 12 to generate "mixed resistance". In this embodiment, the cross section of the test piece placement groove 21 is a U-shaped structure, and as shown in fig. 3, the test piece 5 is placed in the U-shaped structure. The cross section of the measuring piece placing groove 21 can also be in a V-shaped structure, as shown in FIG. 4, the cross section of the measuring piece placing groove 21 can also be in an arc-shaped structure, and the cross section of the measuring piece placing groove 21 can also be in other structures as required.
At least one end of the test piece placement groove 21 is provided with an opening, and the test piece 5 can slide in or out along the length direction of the test piece accommodating part 2. In this embodiment, the two ends of the test piece placement slot 21 are open, and the test piece 5 can slide in or out of any opening of the test piece placement slot 21.
In this embodiment, the measurement piece accommodating part 2 is made of quartz, and the measurement piece accommodating part 2 may be made of other materials as long as the measurement piece accommodating part 2 is insulating and heat-resistant. The thinner the bottom thickness of the test piece accommodating portion 2 is, the more accurately the actual temperature of the test piece 5 can be detected.
Example two:
the present embodiment provides a detection clamp, and the difference between the present embodiment and the first embodiment is that the detection clamp further includes an insulating portion 7 in the present embodiment, and the insulating portion 7 is disposed to insulate the terminal 3 from the fixing base 12. Specifically, as shown in fig. 5 and 6, the insulating portion 7 is disposed in the fixing base 12 and above the test piece accommodating portion 2. The terminal 3 is inserted into the insulating portion 7 and is insulated from the fixing base 12. Specifically, the fixing base 12 is provided with a mounting hole 123 for mounting the insulating portion 7, and the mounting hole 123 is located above the mounting groove 122.
Further, as shown in fig. 7, a fixing hole 71 is formed in the insulating portion 7, a through hole 124 corresponding to the fixing hole 71 is formed in the fixing base 12, one end of the terminal 3 passes through the through hole 124 and the fixing hole 71 and abuts against the tested device 5, and the other end of the terminal extends out of the fixing base 12.
Example three:
the embodiment provides a detection system, which comprises the detection clamp in the first embodiment or the second embodiment. The detection system clamps the tested piece 5 through the detection clamp, and can detect the resistivity or conductivity of the tested piece 5 at different times in very-warm and large-range temperature change environments.
Specifically, the detection system further comprises a voltage detection device, a constant current device, a temperature measuring device 4, a temperature adjusting and controlling device and a signal collecting and processing device. The voltage detection device is connected with the middle two binding posts 3 of the four binding posts 3 of the detection clamp through conducting wires and is used for detecting the voltage of a tested piece 5 between the middle two binding posts 3. The voltage detection device of the embodiment is a nano-volt meter, and the precision can reach 10-9V, the higher the precision, the more accurate the reading, and the voltage detection device can also be a dynamic resistance strain gauge and a connecting bridge. The constant current device is connected with two outer terminals 3 of the four terminals 3 of the detection clamp through conducting wires and is used for providing constant current. The probe of the temperature measuring device 4 is arranged in the fixing groove 121 of the detection clamp. As shown in FIG. 1The flow path of the constant current provided by the constant current device in the detection clamp is shown as follows: left terminal → dut → right terminal, or: right terminal → dut → left terminal, in the process without contact with any other non-insulator, to ensure the voltage detected is that of the selected region.
The temperature adjusting and controlling device is used for heating, preserving heat and cooling the tested piece 5 clamped by the detection clamp.
Optionally, the temperature control range of the temperature adjusting and controlling device is-260 ℃ to 1200 ℃. After the heating of the tested piece 5 is finished, the tested piece can be cooled by air cooling, and the air cooling can also be cooled by a cooling medium, wherein the air cooling is cooling in room-temperature static air, and the cooling medium comprises but is not limited to liquid nitrogen, alcohol, water, sand and flowing air.
In this embodiment, the temperature adjusting and controlling device adopts a tubular resistance furnace and a controlling device thereof, the cooling mode adopts air cooling, and the maximum cooling rate is 1000 ℃/min.
The signal collecting and processing device is connected to the voltage detecting device and the temperature measuring device 4, and is configured to collect and process signals in real time to output related information, where the related information includes, but is not limited to, dynamic resistivity, conductivity, and temperature, and may also output a resistivity-temperature curve, a conductivity-temperature curve, a resistivity-time curve, a conductivity-time curve, and the like, and may be displayed by a display device (not shown in the figure) connected to the signal collecting and processing device.
The signal acquisition and processing device continuously acquires and records signals of voltage, temperature and the like of the tested piece 5 at different times in the processes of temperature rise, heat preservation and temperature reduction of the tested piece 5, and obtains resistivity or conductivity, a resistivity-temperature or conductivity-temperature curve, a resistivity-time or conductivity-time curve and the like of the tested piece 5 at different times through real-time information processing, so as to determine the structural property changes of the tested piece 5 and tested materials; the structural change includes but is not limited to recovery, recrystallization, solid solution and desolventization, and the properties include but are not limited to conductivity and corrosion resistance.
FIG. 8 is a resistivity-temperature curve of a 7B50 aluminum alloy solid solution measured by the detection system provided by the present invention during continuous cooling, wherein the average cooling rate is 1200 ℃/min. During the continuous cooling process of the solid solution, if no desolventizing action occurs, the resistivity-temperature curve is close to a straight line, once the desolventizing is started, the curve deviates from the straight line, after the desolventizing is finished, the curve returns to the straight line again, and the starting point and the ending point of the curve deviating from the straight line correspond to the desolventizing starting point and the ending point.
FIG. 9 is a graph of conductivity-time curve of 2297 alloy in the process of solid solution at 535 ℃ for 2h and subsequent cooling for 2h measured by the detection system provided by the invention, wherein the alloy is redissolved and the conductivity is reduced in the stage of 0-2 h, and the solid solution is desolventized and the conductivity is continuously increased in the stage of slow cooling for 2-4 h, and a change process of primary deviation and regression line appears, indicating that a phase is separated out.
Note that the above is only a preferred embodiment of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A test fixture, comprising:
the clamping seat (1) comprises a guide rail (11) and at least two fixing seats (12) arranged at intervals, the fixing seats (12) can slide along the guide rail (11), the fixing seats (12) are insulated from the guide rail (11), and each fixing seat (12) is provided with a measured part accommodating part (2) insulated from a measured part (5) and a fixing groove (121) for installing a temperature measuring device (4);
terminal (3), at least four terminal (3) are arranged respectively on fixing base (12), two of one side terminal (3) can be followed the length direction of guide rail (11) removes for two terminal (3) of other one side, terminal (3) one end is worn to locate fixing base (12) and can the butt in receive by measuring piece (5), the other end is followed fixing base (12) top is stretched out.
2. The detection clamp according to claim 1, characterized in that the fixing base (12) is provided with four blocks, each block of the fixing base (12) is provided with a binding post (3), and the fixing base (12) slides along the guide rail (11) and drives the binding post (3) to move.
3. The detection jig according to claim 1 or 2, wherein a mounting groove (122) for mounting the test piece accommodating part (2) is provided on the fixing base (12), the mounting groove (122) is provided above the fixing groove (121), and the fixing groove (121) communicates with the mounting groove (122).
4. The inspection jig of claim 3, wherein the mounting groove (122) is provided along a length direction of the guide rail (11), and the inspection piece accommodating part (2) can slide in or out along the length direction of the mounting groove (122).
5. The test fixture according to claim 1, wherein the terminal post (3) is in point contact with the test piece (5).
6. The detection clamp according to claim 1, further comprising an insulating portion (7), wherein the insulating portion (7) is provided with a fixing hole (71), the fixing base (12) is provided with a through hole (124) corresponding to the fixing hole (71), the terminal (3) is arranged in the through hole (124) and the fixing hole (71) and abuts against a tested piece (5), and the insulating portion (7) is arranged in the fixing base (12).
7. The inspection jig of claim 1 wherein the rail (11) is made of an insulating material.
8. An inspection system comprising the inspection fixture of any one of claims 1-7.
9. The detection system according to claim 8, comprising:
the voltage detection device is connected with two middle binding posts (3) of the four binding posts (3) of the detection clamp through conducting wires;
the constant current device is connected with two binding posts (3) on the outer sides of the four binding posts (3) of the detection clamp through conducting wires;
the temperature measuring device (4), a temperature measuring probe of the temperature measuring device (4) is arranged in the fixing groove (121) of the detection clamp;
the temperature adjusting and controlling device is used for heating, cooling or preserving heat of a tested piece (5) clamped in the detection clamp;
and the signal acquisition and processing device is connected with the voltage detection device and the temperature measurement device (4), and is configured to acquire signals of the voltage detection device and the temperature measurement device (4), process the signals and output the processed signals.
10. The detection system according to claim 9, wherein the information output by the signal acquisition and processing device comprises: resistivity, conductivity, temperature, resistivity-temperature curve, conductivity-temperature curve, resistivity-time curve, conductivity-time curve, to analyze the subject (5) for changes in tissue properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343155.4A CN113092861A (en) | 2019-12-23 | 2019-12-23 | Detection clamp and detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343155.4A CN113092861A (en) | 2019-12-23 | 2019-12-23 | Detection clamp and detection system |
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| Publication Number | Publication Date |
|---|---|
| CN113092861A true CN113092861A (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911343155.4A Pending CN113092861A (en) | 2019-12-23 | 2019-12-23 | Detection clamp and detection system |
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| CN (1) | CN113092861A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203241441U (en) * | 2013-05-07 | 2013-10-16 | 上海大学 | Clamp of high-temperature resistivity measurement test |
| CN205333740U (en) * | 2016-01-22 | 2016-06-22 | 河南检亿科技有限公司 | Direct -current resistance tester |
| CN205826750U (en) * | 2016-06-01 | 2016-12-21 | 国网河北省电力公司电力科学研究院 | Conductor resistivity at room temperature and the device of temperature-coefficient of electrical resistance is measured under a kind of alternating temperature |
| CN207457347U (en) * | 2017-11-21 | 2018-06-05 | 中钢集团新型材料（浙江）有限公司 | A kind of test system for 1600 DEG C of high-temperature resistivities of graphite heater material |
| CN207457120U (en) * | 2017-11-21 | 2018-06-05 | 中钢集团新型材料（浙江）有限公司 | One kind tests novel clamp for 1600 DEG C of carbon material high-temperature resistivities |
| CN108333430A (en) * | 2018-04-16 | 2018-07-27 | 德阳微影智能科技有限责任公司 | A kind of full-automatic machine vision copper bar volume resistivity detection device |
-
2019
- 2019-12-23 CN CN201911343155.4A patent/CN113092861A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203241441U (en) * | 2013-05-07 | 2013-10-16 | 上海大学 | Clamp of high-temperature resistivity measurement test |
| CN205333740U (en) * | 2016-01-22 | 2016-06-22 | 河南检亿科技有限公司 | Direct -current resistance tester |
| CN205826750U (en) * | 2016-06-01 | 2016-12-21 | 国网河北省电力公司电力科学研究院 | Conductor resistivity at room temperature and the device of temperature-coefficient of electrical resistance is measured under a kind of alternating temperature |
| CN207457347U (en) * | 2017-11-21 | 2018-06-05 | 中钢集团新型材料（浙江）有限公司 | A kind of test system for 1600 DEG C of high-temperature resistivities of graphite heater material |
| CN207457120U (en) * | 2017-11-21 | 2018-06-05 | 中钢集团新型材料（浙江）有限公司 | One kind tests novel clamp for 1600 DEG C of carbon material high-temperature resistivities |
| CN108333430A (en) * | 2018-04-16 | 2018-07-27 | 德阳微影智能科技有限责任公司 | A kind of full-automatic machine vision copper bar volume resistivity detection device |
Non-Patent Citations (1)
| Title |
|---|
| 李先芬: "《熔体结构转变及其对凝固的影响》", 30 October 2007, 合肥工业大学出版社 * |
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