CN107024668A - A kind of method of magnetic characteristic of the measurement sample strip in joule heat treatment process - Google Patents
A kind of method of magnetic characteristic of the measurement sample strip in joule heat treatment process Download PDFInfo
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- CN107024668A CN107024668A CN201710200727.8A CN201710200727A CN107024668A CN 107024668 A CN107024668 A CN 107024668A CN 201710200727 A CN201710200727 A CN 201710200727A CN 107024668 A CN107024668 A CN 107024668A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
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Abstract
The present invention relates to material property testing field, the method for magnetic characteristic of a kind of measurement sample strip in joule heat treatment process, by the typical sizes for determining Tape samples；To Helmholtz coil plus electric current, magnetic field is added to the Tape samples；Add electric current on induction coil I, frequency range is between 1Hz to 100Hz, adds electric current on induction coil II, and frequency range is between 10KHz to 100KHz；Power-on, makes Tape samples produce Joule heat, regulation power supply, and electric current, which changes with time, keeps certain milliampere/minute of speed 40；Pass through the temperature of thermocouple measurement Tape samples；Determine the resistance R of Tape samples；50 milligrams to 1 gram of the weight range of the counterweight is adjusted, to change the tension force in the Tape samples, the magnetic characteristic under the conditions of differential tension is obtained；Pick-up loop I and pick-up loop II electric current carry out subsequent analysis after entering experiment control platform, the magnetic characteristic under some state are obtained, while monitored resistance.
Description
Technical field
It is a kind of side for studying soft magnetic amorphous and nanocrystal ribbon sample the present invention relates to material property testing field
Method, the method for magnetic characteristic of particularly a kind of measurement sample strip in joule heat treatment process.
Background technology
Soft magnetic materials mainly for the preparation of the iron core of transformer, electro-motor, various kinds of sensors, electromagnetic shielding material etc.,
Amorphous metal refers to the material with unordered non-equilibrium structure, can develop into a variety of metastable states, nanocrystal soft magnetism when heated
Property material be its amorphous precursor differentiation product, be current new industry, the structure composition of this material is received comprising a series of
Rice grain, diameter is between 5nm to 20nm, and its magnetic characteristic depends primarily on the size, chemical composition and crystal of nano particle
Fraction, these three parameters depend on the chemical composition and heat treatment process of initial amorphous alloy.The effect of amorphous array is：Carry
For the magnetic exchange interaction between nano particle, and change the magnetoelastic energy of material, in some cases, magnetic is special
Levying can be improved by heat engine or pyromagnetic heating, therefore, the base for studying amorphous and nanocrystal soft magnetic materials
Plinth instrument, including heat-treatment furnace measure the instrument of magnetism of material with some under high frequency or low frequency, measure saturated magnetization, coercive
Power, magnetic conductivity frequency etc..
The content of the invention
In order to adapt to the research needs of above-mentioned new industry nanocrystal soft magnetic material, the present invention provides a kind of scanning knot
The method of the electromagnetic signature of construction system and measurement amorphous and nanocrystalline metal band in of short duration joule heat treatment, only passes through
One piece of sample, can just obtain the experimental data related to magnetic of material at a room temperature and a high temperature, make one within a short period of time
Can explain the structure change in alloy, and determine optimal annealing conditions.
The technical solution adopted in the present invention is：
A kind of method of magnetic characteristic of the measurement sample strip in joule heat treatment process, measurement apparatus is mainly wrapped
Include electrode, pick-up loop I, induction coil I, induction coil II, hole, thermocouple, pick-up loop II, counterweight, balancing pole, machinery negative
Load, Tape samples, Helmholtz coil, the power supply for providing annealing electric current, annealing electric current line, resistance Rr, cable I,
Cable II, cable III, the signal voltage line of thermocouple, cable I V, the voltage for producing magnetic field H when measuring magnetic hysteresis cycles
Amplifier, experiment control platform, data collecting system, the pick-up loop I are low-frequency coils, have 2000 circles, the pick-up line
II is high frequency coil, has 100 circles circle, and the pick-up loop I and the pick-up loop II are respectively wound around outside a glass tube
The coil group of conllinear arrangement on wall, the Tape samples are placed in the glass tube during test, and the glass tube can also be used
The pipe that ceramics or alumina material are made is replaced, and the hole is the import of the thermocouple and is located at the pick-up loop I with picking up
On the glass tube between swash circle II, the thermocouple is located in the glass tube and is attached to the Tape samples table
Face is simultaneously connected by the hole with the signal voltage line of the thermocouple；The Tape samples two ends are pressed from both sides on the electrodes, plus
A joule thermal annealing can be carried out after upper electric current, the Tape samples lower end is added with the mechanical load and equipped with the counterweight, flat
Bar is weighed to adjust load；The pick-up loop I and pick-up loop II peripheries have the induction coil I and the sense
Coil II, the induction coil I and the induction coil II is answered to be respectively used to produce the magnetic field of low frequency to obtain using magnetic flux technology
Magnetic hysteresis cycles curve and for producing high frequency magnetic field, measure the magnetic conductivity of sample with reference to Phase Lock Technique, the induction coil I and
The induction coil II is the conllinear coil group for arranging and being intertwined mutually；The cable I connect the induction coil I with
Between voltage amplifier, the experiment control platform connects the induction coil II, by described by the cable II respectively
Cable III connects the pick-up loop I, passes through the cable I V connections pick-up loop II, measuring method following steps：
One, determines the typical sizes of the Tape samples：15 centimetres of length, 1 millimeter of width, 30 microns of thickness；
Two, add electric current to the Helmholtz coil, so as to add magnetic field to the Tape samples；
Three, are on induction coil I plus electric current, and frequency range is between 1Hz to 100Hz, on induction coil II plus electric current,
Frequency range is between 10KHz to 100KHz；
Four, open the power supply for being used to provide annealing electric current, the Tape samples is produced Joule heat, adjust institute
State power supply, electric current changes with time milliampere/minute of speed 40 for keeping certain；
The temperature that five, pass through Tape samples described in the thermocouple measurement；
Six, determine the resistance R of the Tape samples：Synchronization measure respectively the Tape samples voltage drop Vs and
The voltage drop Vr for the resistance Rr being connected on the Tape samples, passes through equationCalculate the electricity of the Tape samples
Hinder R；
The weight of the seven, regulations counterweight, 50 milligrams to 1 gram of scope, to change the tension force in the Tape samples, so that
Obtain the magnetic characteristic under the conditions of differential tension；
Pick-up loop I described in eight, and the pick-up loop II electric current enter the experiment control platform, pass through the reality
The subsequent analysis of control platform is tested, the magnetic characteristic under some state is obtained.
When the material of the Tape samples is Fe63.5Si26.5B5Nb4Cu1, the measuring method of its magnetic characteristic is as follows：
Heat scan,
The structural relaxation of stage 1., the power supply is started from scratch constantly increases electric current, the band sample to the Tape samples
Product are in high temperature, when electric current is 0.4A, and change, the Tape samples electricity takes place in the magnetic characteristic of the Tape samples
When flowing in the range of 0.4A to 0.8A, the structural relaxation of the Tape samples takes place；
The nano-crystallization of stage 2., during the Tape samples electric current 0.83A, by the reversible change and temperature of resistance at room temperature
The slope of degree-resistance curve judges：Nano-crystallization process starts, when the Tape samples electric current 1.01A, nano-crystallization
Process terminates, and the magnetic characteristic of the Tape samples material is optimal value when electric current is 0.95A；
The extensive crystallization of stage 3., during the Tape samples electric current 1.03A, the magnetic characteristic of the Tape samples material is opened
Begin to be deteriorated, it is meant that extensive crystallization process starts, the anisotropy increase of the magnetocrystalline of the Tape samples material, now
Stop the electric current on the increase Tape samples, preparation starts to drop electric current；
Cooling scanning,
The power supply constantly reduces electric current to the Tape samples, and the Tape samples are in the mistake gradually cooled from high temperature
Cheng Zhong,
Tape samples electric current described in stage 4. during 0.63A to 0.07A, on temperature-coercive field curve
0.61A has a minimum value, in 240 degrees centigrade Fe2The magneto-crystalline anisotropy of B phases disappears.
The beneficial effects of the invention are as follows：
In the anisotropy that study sample heat treatment process is induced, the work in mechanical stress and magnetic field can be applied simultaneously again
With using one piece of sample just its structure evolution can be illustrated by determining the appearance of phase, it is possible to illustrate that thermal treatment zone is come
Optimize magnetic characteristic, magnetic, and monitored resistance simultaneously can be measured while being heat-treated to sample, by room temperature with
Several magnetic-electrical properties are determined under hot conditions.
Brief description of the drawings
Further illustrated with reference to the figure of the present invention：
Fig. 1 is one of apparatus of the present invention schematic diagram；
Fig. 2 is the two of apparatus of the present invention schematic diagram.
In figure, 1. electrodes, 2. pick-up loop I, 3. induction coil I, 4. induction coil II, 5. holes, 6. thermocouples, 7. pick-ups
Coil II, 8. counterweights, 9. balancing poles, 10. mechanical loads, 11. Tape samples, 12. Helmholtz coils, 13. power supplys, 14. move back
Thermoelectricity streamline, 15. resistance Rr, 16. cable Is, 17. cable IIs, 18. cable IIIs, the signal voltage line of 19. thermocouples, 20. electricity
Cable IV, 21. voltage amplifiers, 22. experiment control platforms.
Embodiment
If Fig. 1 is one of apparatus of the present invention schematic diagram, Fig. 2 is the two of apparatus of the present invention schematic diagram, and measurement apparatus is mainly wrapped
Include electrode 1, pick-up loop I 2, induction coil I 3, induction coil II 4, hole 5, thermocouple 6, pick-up loop II 7, counterweight 8,
Balancing pole 9, mechanical load 10, Tape samples 11, Helmholtz coil 12, for provide annealing electric current power supply 13, move back
Thermoelectricity streamline 14, resistance Rr15, cable I 16, cable II 17, cable III 18, the signal voltage line 19 of thermocouple, cable I V
20th, for generation magnetic field H voltage amplifier 21, experiment control platform 22, data collecting system, institute when measuring magnetic hysteresis cycles
State that pick-up loop I 2 is low-frequency coil, there are 2000 circles, the pick-up loop II 7 is high frequency coil, has 100 circles, the pick-up
Coil I 2 and the pick-up loop II 7 are the coil groups for the conllinear arrangement being respectively wound around in a glass pipe outer wall, test
Shi Suoshu Tape samples 11 are placed in the glass tube, the pipe generation that the glass tube can also be made of ceramics or alumina material
Replace, the hole 5 is the import of the thermocouple 6 and the glass being located between the pick-up loop I 2 and pick-up loop II 7
On glass pipe, the thermocouple 6 be located at the glass tube in and be attached to the surface of Tape samples 11 and by the hole 5 with
The signal voltage line 19 of the thermocouple is connected；The two ends of Tape samples 11 are clipped on the electrode 1, and adding can after electric current
Carry out joule thermal annealing, the lower end of Tape samples 11 added with the mechanical load 10 and equipped with the counterweight 8, balancing pole 9 with
Adjust load；The pick-up loop I 2 and the peripheries of the pick-up loop II 7 have the induction coil I 3 and the sense
Coil II 4, the induction coil I 3 and the induction coil II 4 is answered to be respectively used to produce the magnetic field of low frequency to use magnetic flux
Technology obtains magnetic hysteresis cycles curve and for producing high frequency magnetic field, and the magnetic conductivity of sample, the sensing are measured with reference to Phase Lock Technique
Coil I 3 and the induction coil II 4 are the conllinear coil groups for arranging and being intertwined mutually；The cable I 16 is connected
Between the induction coil I 3 and voltage amplifier 21, the experiment control platform 22 is connected by the cable II 17 respectively
The induction coil II 4, connect by the cable III 18 the pick-up loop I 2, by the cable I V20 connections institute
State pick-up loop II 7, measuring method following steps：
One, determines the typical sizes of the Tape samples 11：15 centimetres of length, 1 millimeter of width, 30 microns of thickness；
Two, are to the Helmholtz coil 12 plus electric current, so as to the Tape samples 11 plus magnetic field；
Three, are on induction coil I 3 plus electric current, and frequency range is between 1Hz to 100Hz, on induction coil II 4 plus
Electric current, frequency range is between 10KHz to 100KHz；
Four, open the power supply 13 for being used to provide annealing electric current, the Tape samples 11 is produced Joule heat, adjust
Save the power supply 13, electric current changes with time milliampere/minute of speed 40 for keeping certain；
Five, measure the temperature of the Tape samples 11 by the thermocouple 6；
Six, determine the resistance R of the Tape samples 11：The voltage drop of the Tape samples 11 is measured respectively in synchronization
Vs and the resistance Rr being connected on the Tape samples 11 voltage drop Vr, pass through equationCalculate the band sample
The resistance R of product 11；
The weight of the seven, regulations counterweight 8,50 milligrams to 1 gram of scope, to change the tension force in the Tape samples 11,
So as to obtain the magnetic characteristic under the conditions of differential tension；
Pick-up loop I 2 described in eight, and the pick-up loop II 7 electric current enter the experiment control platform 22, pass through
The subsequent analysis of the experiment control platform 22, obtains the magnetic characteristic under some state.
When the material of the Tape samples 11 is Fe63.5Si26.5B5Nb4Cu1, the measuring method of its magnetic characteristic is as follows：
Heat scan,
The structural relaxation of stage 1., the power supply 13 is started from scratch constantly increases electric current, the bar to the Tape samples 11
Carry sample 11 is in high temperature, and when electric current is 0.4A, change, the bar takes place in the magnetic characteristic of the Tape samples 11
When in the range of electric current 0.4A to the 0.8A of carry sample 11, the structural relaxation of the Tape samples 11 takes place；
The nano-crystallization of stage 2., during the 11 electric current 0.83A of Tape samples, by the reversible change and temperature of resistance at room temperature
The slope of degree-resistance curve judges：Nano-crystallization process starts, nanocrystalline when the 11 electric current 1.01A of Tape samples
Change process terminates, and the magnetic characteristic of the material of Tape samples 11 is optimal value when electric current is 0.95A；
The extensive crystallization of stage 3., during the 11 electric current 1.03A of Tape samples, the magnetic of the material of Tape samples 11 is special
Levy and start to be deteriorated, it is meant that extensive crystallization process starts, the anisotropy of the magnetocrystalline of the material of Tape samples 11 increases
Plus, now stop the electric current on the increase Tape samples 11, preparation starts to drop electric current；
Cooling scanning,
The power supply 13 constantly reduces electric current to the Tape samples 11, and the Tape samples 11 are in gradually to drop from high temperature
In the process of temperature,
The electric current of Tape samples 11 described in stage 4. during 0.63A to 0.07A, on temperature-coercive field curve
0.61A has a minimum value, in 240 degrees centigrade Fe2The magneto-crystalline anisotropy of B phases disappears.
The structural relaxation, refers to that the atomic arrangement inside amorphous metal occurs over time or under annealing case slow
Change, gradually change over the phenomenon of more stable atomic arrangement structure.
The Helmholtz coil is a pair of coils, for producing uniform stationary magnetic field, makes the uniform of this magnetic field
Region is larger, you can to have identical magnetic field on the whole Tape samples 11.It is defined：If a pair of identical current-carrying
Circular coil is parallel to each other and coaxial, passes to equidirectional electric current, when coil-span is equal to coil radius, two current-carrying coils it is total
Interior in a big way near the midpoint of axle of magnetic field is uniform, and Helmholtz coil has larger practicality in production and scientific research
Value, is also commonly used for the measurement criteria of low-intensity magnetic field.The conllinear arrangement：It is wrapped on same cylinder one on the other.
Claims (2)
1. a kind of method of magnetic characteristic of measurement sample strip in joule heat treatment process, measurement apparatus mainly includes electrode
(1), pick-up loop I (2), induction coil I (3), induction coil II (4), hole (5), thermocouple (6), pick-up loop II (7), match somebody with somebody
Weight (8), balancing pole (9), mechanical load (10), Tape samples (11), Helmholtz coil (12), for provide annealing electricity
Power supply (13), annealing electric current line (14), resistance Rr (15), cable I (16), cable II (17), cable III (18), the thermoelectricity of stream
Even signal voltage line (19), cable I V (20), the voltage amplifier (21) for producing magnetic field H when measuring magnetic hysteresis cycles,
Experiment control platform (22), data collecting system, the pick-up loop I (2) are low-frequency coils, have 2000 circles, the pick-up line
Enclosing II, (7) are high frequency coils, have 100 circles, and the pick-up loop I (2) and the pick-up loop II (7) are to be respectively wound around one
The coil group of conllinear arrangement in glass pipe outer wall, the Tape samples (11) are placed in the glass tube during test, the glass
The pipe that glass pipe can also be made of ceramics or alumina material is replaced, and the hole (5) is the import of the thermocouple (6) and is located at
On the glass tube between the pick-up loop I (2) and pick-up loop II (7), the thermocouple (6) is located at the glass tube
It is interior and be attached to the Tape samples (11) surface and by the hole (5) and signal voltage line (19) phase of the thermocouple
Even；Tape samples (11) two ends are clipped on the electrode (1), and a joule thermal annealing, the bar can be carried out by adding after electric current
Carry sample (11) lower end is added with the mechanical load (10) and equipped with the counterweight (8), balancing pole (9) to adjust load；
The pick-up loop I (2) and the pick-up loop II (7) peripheries have the induction coil I (3) and the induction coil II
(4), the induction coil I (3) and the induction coil II (4) are respectively used to produce the magnetic field of low frequency to obtain using magnetic flux technology
Obtain magnetic hysteresis cycles curve and for producing high frequency magnetic field, the magnetic conductivity of sample, the induction coil I are measured with reference to Phase Lock Technique
And the induction coil II (4) is the conllinear coil group for arranging and being intertwined mutually (3)；The cable I (16) connects institute
State between induction coil I (3) and voltage amplifier (21), the experiment control platform (22) passes through the cable II (17) respectively
Connect the induction coil II (4), the pick-up loop I (2) connected by the cable III (18), by the cable I V
(20) the pick-up loop II (7) is connected,
It is characterized in that：Measuring method following steps：
One, determines the typical sizes of the Tape samples (11)：15 centimetres of length, 1 millimeter of width, 30 microns of thickness；
Two, are to the Helmholtz coil (12) plus electric current, so as to the Tape samples (11) plus magnetic field；
Three, are on induction coil I (3) plus electric current, and frequency range is between 1Hz to 100Hz, to be powered up on induction coil II (4)
Stream, frequency range is between 10KHz to 100KHz；
Four, open the power supply (13) for being used to provide annealing electric current, the Tape samples (11) is produced Joule heat, adjust
Save the power supply (13), electric current changes with time milliampere/minute of speed 40 for keeping certain；
Five, measure the temperature of the Tape samples (11) by the thermocouple (6)；
Six, determine the resistance R of the Tape samples (11)：The voltage drop of the Tape samples (11) is measured respectively in synchronization
Vs and the resistance Rr being connected on the Tape samples (11) voltage drop Vr, pass through equationCalculate the band
The resistance R of sample (11)；
The weight of the seven, regulations counterweight (8), 50 milligrams to 1 gram of scope, to change the tension force in the Tape samples (11),
So as to obtain the magnetic characteristic under the conditions of differential tension；
Pick-up loop I (2) and the pick-up loop II (7) electric current described in eight, enter the experiment control platform (22), pass through
The subsequent analysis of the experiment control platform (22), obtains the magnetic characteristic under some state.
2. a kind of method of magnetic characteristic of the measurement sample strip according to claim 1 in joule heat treatment process,
It is characterized in that：The material of the Tape samples (11) is Fe63.5Si26.5B5Nb4Cu1, the measuring method of its magnetic characteristic is as follows：
Heat scan,
The structural relaxation of stage 1., the power supply (13) is started from scratch constantly increases electric current, the bar to the Tape samples (11)
Carry sample (11) is in high temperature, and when electric current is 0.4A, change, institute takes place in the magnetic characteristic of the Tape samples (11)
When stating in the range of Tape samples (11) electric current 0.4A to 0.8A, the structural relaxation of the Tape samples (11) takes place；
The nano-crystallization of stage 2., during Tape samples (11) the electric current 0.83A, by the reversible change and temperature of resistance at room temperature
The slope of degree-resistance curve judges：Nano-crystallization process starts, when the Tape samples (11) electric current 1.01A, nanometer
Crystallization process terminates, and the magnetic characteristic of Tape samples (11) material is optimal value when electric current is 0.95A；
The extensive crystallization of stage 3., during Tape samples (11) the electric current 1.03A, the magnetic of Tape samples (11) material is special
Levy and start to be deteriorated, it is meant that extensive crystallization process starts, the anisotropy of the magnetocrystalline of Tape samples (11) material
Increase, now stops the electric current on the increase Tape samples (11), and preparation starts to drop electric current；
Cooling scanning,
The power supply (13) constantly reduces electric current to the Tape samples (11), and the Tape samples (11) are in from high temperature gradually
During cooling,
Tape samples (11) electric current described in stage 4. during 0.63A to 0.07A, on temperature-coercive field curve
0.61A has a minimum value, in 240 degrees centigrade Fe2The magneto-crystalline anisotropy of B phases disappears.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710200727.8A CN107024668B (en) | 2017-03-22 | 2017-03-22 | Method for measuring magnetic characteristics of sample strip in Joule heat treatment process |
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| CN107024668B CN107024668B (en) | 2023-09-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001654A (en) * | 2018-06-06 | 2018-12-14 | 河南中原特钢装备制造有限公司 | A kind of production method of non magnetic drill collar relative permeability mark steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0942136A (en) * | 1995-07-27 | 1997-02-10 | Nippon Soken Inc | Combustion state detector |
| CN1710441A (en) * | 2005-04-30 | 2005-12-21 | 山东大学 | Apparatus and method for measuring electromagnetic characteristic variation of material |
| CN102447055A (en) * | 2010-10-09 | 2012-05-09 | 中国科学院物理研究所 | Magnetic metal thin film type hall device and preparation method thereof |
| CN202770984U (en) * | 2012-09-20 | 2013-03-06 | 上海市计量测试技术研究院 | Magnetic material shielding property self-evaluating device |
| CN105974341A (en) * | 2016-06-13 | 2016-09-28 | 宁波市计量测试研究院（宁波市衡器管理所） | Magnetic flux testing device at extreme air temperature |
-
2017
- 2017-03-22 CN CN201710200727.8A patent/CN107024668B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0942136A (en) * | 1995-07-27 | 1997-02-10 | Nippon Soken Inc | Combustion state detector |
| CN1710441A (en) * | 2005-04-30 | 2005-12-21 | 山东大学 | Apparatus and method for measuring electromagnetic characteristic variation of material |
| CN102447055A (en) * | 2010-10-09 | 2012-05-09 | 中国科学院物理研究所 | Magnetic metal thin film type hall device and preparation method thereof |
| CN202770984U (en) * | 2012-09-20 | 2013-03-06 | 上海市计量测试技术研究院 | Magnetic material shielding property self-evaluating device |
| CN105974341A (en) * | 2016-06-13 | 2016-09-28 | 宁波市计量测试研究院（宁波市衡器管理所） | Magnetic flux testing device at extreme air temperature |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001654A (en) * | 2018-06-06 | 2018-12-14 | 河南中原特钢装备制造有限公司 | A kind of production method of non magnetic drill collar relative permeability mark steel |
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| CN107024668B (en) | 2023-09-26 |
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Inventor after: Zhang Wangqiao Inventor after: Zhao Yongjian Inventor after: Zhang Xiangping Inventor before: Zhao Yongjian Inventor before: Zhang Xiangping Inventor before: Zhang Wangqiao |
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