CN2114169U - New-type magnetic measuring device of articles - Google Patents
New-type magnetic measuring device of articles Download PDFInfo
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- CN2114169U CN2114169U CN 92203423 CN92203423U CN2114169U CN 2114169 U CN2114169 U CN 2114169U CN 92203423 CN92203423 CN 92203423 CN 92203423 U CN92203423 U CN 92203423U CN 2114169 U CN2114169 U CN 2114169U
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Abstract
The utility model relates to a novel testing device for the magnetism temperature characteristic of a pull sample, belonging to the technical field of magnetic measurement. The field coil, the cold pool, the fieldless coil and the heater of the utility model are mutually independent and coaxial. The variation of the magnetism of materials in 77-1000K following temperature can be measured by the novel testing device for the magnetism temperature characteristic of the pull sample, the sigma 2-T curves of permanent magnetic materials can be measured, and the reversible temperature coefficient of the magnetic flux of the open circuits of the permanent magnetic materials and the irreversible loss of the magnetic flux of the open circuits can be measured. The utility model has the advantages of high measuring accuracy, stable and reliable use and low cost. Imported equipment can be replaced.
Description
The utility model belongs to the Magnetic Measurement Technology field.
Lifting the sample magnetometer before the utility model is to measure magnetism of material one of temperature variant basic equipment between 4.2-300K.Figure one is this equipment synoptic diagram, is that make in French Neel laboratory.Figure one symbol description is as follows:
1, heater strip
2, measuring samples
3, Dewar flask
4, superconducting coil
5, thermopair
6, lifting rod
7, field coil is arranged
8, vacuum chamber
This equipment needs liquid helium to keep magnetic field.Sample is measured magnetic flux and is varied with temperature fast by test coil.Though this equipment is measured good reliability, the precision height, it costs an arm and a leg, and every of import equipment is the hundreds of thousands dollar, and temperature measurement range is narrow, at 4.2-300K, is difficult in the 300-1000K scope and uses.This equipment can not be used for testing permanent magnetic material open circuit magnetic flux reversible temperature coefficient and irreversible loss.
The utility model purpose be propose a kind of can be at the novel sample magnetic temperature proving installation that lifts of 77-1000K or higher scope work, same axle is upward independent of each other to be made up of field coil, fieldless coil, cold drop and heating furnace four parts this device by being in, it has overcome and has lifted the shortcoming that the sample magnetometer can not at high temperature use, and has increased the measurement function of permanent magnetic material open circuit magnetic flux reversible temperature coefficient and irreversible loss.
In conjunction with figure two explanations content of the present utility model.Figure two is structure principle charts of measurement mechanism.This schematic symbol, composition is described as follows:
1, measures permanent magnet
2, cold drop
3, digital fluxmeter
4, temperature controller
5, vacuum pump
6, digital temperature measurer
7, field coil is arranged
8, sample
9, fieldless coil
10, heating furnace
11, temperature-controlling thermal couple
12, quartz ampoule
13, vacuum chamber
14, temperature-measuring heat couple
New equipment mainly by the cold drop (2) that field coil (7), fieldless coil (9) and change sample temperature are arranged of test magnetic flux, form by heating furnace (10) four parts, and four ingredients are independent fully, be separated from each other, and coaxial.Numeral fluxmeter (3) is connected with field coil (7) and fieldless coil (9) are arranged respectively, and the test magnetic flux is with there being field coil (7) to measure σ
S-T curve; Measure open circuit magnetic flux reversible temperature coefficient and irreversible loss with fieldless coil (9).Cold drop (2) water or liquid nitrogen are made liquid coolant, change sample temperature in the 77-300K scope; Heating furnace (10) heats with heater strip, change sample temperature at 300-1000K or higher scope, inner lining of furnace has a quartz ampoule (12), as the guide rail that sample vacuum chamber (13) are housed, vacuum chamber (13) is along guide rail, slide along axis, sample can be stopped in above-mentioned four districts or move.Usually sample is bulk sample or powdered sample, and when test open circuit flux irreversible loss, sample is the little garden of φ 2.5 * 1.75mm post (in the Joseph curve, just in time P=2).Vacuum tightness is no less than 5 * 10 in vacuum chamber
-5During torr, after the sample that thermopair (14) is housed pushes in the heating furnace (10) and heats (or cooling in the cold drop of liquid coolant (2) is housed), fast by coil (7) or (9), numeral fluxmeter (3) and digital temperature measurer (6) are just noted the flux change amount under transient temperature and this temperature, finish one-shot measurement.There is field coil (7) to cooperate, can measures the σ of 77-300K with cold drop (2)
S-T curve; Cooperate with heating furnace (10), measure the above σ of 300k
S-T curve; Fieldless coil (9) cooperates with heating furnace, can measure 300K above open circuit magnetic flux reversible temperature coefficient and irreversible loss.The characteristics that the auto-zero of numeral fluxmeter (3) and numerical value keep have guaranteed that temperature and magnetic-flux measurement can accurately carry out.When the measurement permanent magnetic field is the 12000 Oe left and right sides, can make sample near saturated.
Measuring principle:
1, the measurement of reversible temperature coefficient and irreversible loss
If furnace temp is T1, the cold drop temperature is T0
After cold drop (2) cooled off half an hour, sample passed through fieldless coil (9) in the mode that the advanced person retreats, and records room temperature magnetic flux Bo with its sample in elder generation.After then sample being incubated half an hour under the T1 temperature in heating furnace, pass field-free test coil (9), record the magnetic flux B1 under the T1 temperature.After at last sample being put back to again cold drop (2) cooling half an hour, record magnetic flux B10 under the To temperature with preceding method.Actual relationship such as figure three calculate reversible temperature coefficient α and irreversible loss IL according to formula.
α＝ (B1－B10)/(B1（T1－T0）) 100％
IL＝ (B
O－B
10)/(B
O) 100％
2, σ
S-T curved measurement
Sample is placed on cold drop (2) position, and cold drop (2) is put into liquid nitrogen, and utilizing has field coil (7) can measure the σ of 77K-room temperature range
S-T curve.
Sample is placed on heating furnace (10) position, changes furnace temperature, and utilizing has field coil (7) can measure the σ of the above scope of room temperature
S-T curve.σ
SBe specific saturation magnetization, unit is emu/g
Table 1 is Tc(℃ in the different instruments of same sample), σ
S(emu/g) the test chart data are as follows:
Table 1
Lift sample magnetometer DMT-1
(existing import equipment) (the utility model)
Tc σS Tc σS
（℃） （emu／g） （℃） （emu／g）
Fe X 218.7 770 214.1
Co X 163.5 X 151.3
Ni X 55.3 364 55.0
σ
S（Fe）／σ
S（Ni） 3.955 3.907
Checkout area (Oe) 80,000 11600
Illustrate: pure iron sample: φ 2.5 * 1.75 spectroscopic pure
Pure cobalt sample: φ 2.5 * 1.75 99%
Pure nickel sample: φ 2.5 * 1.75 99.99%
X represents the too high not energy measurement of temperature.
Figure four is for using the warm area synoptic diagram.
Table 1, figure four and embodiment curve have clearly illustrated the utility model characteristics.Its characteristics are as follows:
(1) in 77-1000K or higher scope, uses.
(2) the measuring accuracy height is reliable and stable.
(3) remove energy measurement σ
S-T extra curvature is gone back the open circuit magnetic flux reversible temperature coefficient of energy measurement material and the flux irreversible loss of opening a way.
Embodiment:
Press figure two structural representations, form the temperature measuring device DMT-1 of permanent magnetic material, tapping nitrogen in cold drop, test curve are seen figure five, figure six and figure seven.
Figure five is DMT-1 actual measurement permanent magnetism sample (Nd
0.9Dy
0.1)
17Fe
67.8Co
5AI
1.7Nb
1.5B
7Irreversible loss (IL-T relation curve) when different P value.
Figure six is σ of actual measurement sample Ni
SThe relation curve of-T
Figure seven is B-T relation curves of actual measurement sample F e
Claims (2)
1, a kind of novel proving installation that lifts sample magnetic material temperature characteristic, by coil, cooling-part, heater block is formed, it is characterized in that: field coil (7) arranged by the test magnetic flux, the cold drop (2) of fieldless coil (9) and change sample temperature, heating furnace (10) four parts are formed, four ingredients are independent fully, be separated from each other, and it is coaxial with the quartz ampoule that is used as guide rail (12), the vacuum chamber (13) that magnetic sample (8) are housed can move in above-mentioned tetrameric zone or stop along axis, so that measure the σ of sample in 77-1000K or the higher temperature scope
s-T curve, the reversible temperature coefficient and the irreversible loss of open circuit magnetic flux.
2, device according to claim 1 is characterized in that above-mentioned heating furnace (10) is used for 300-1000K or more high-temperature region measurement, and its inwall has one to make the quartz ampoule (12) that guide rail is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92203423 CN2114169U (en) | 1992-03-04 | 1992-03-04 | New-type magnetic measuring device of articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92203423 CN2114169U (en) | 1992-03-04 | 1992-03-04 | New-type magnetic measuring device of articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2114169U true CN2114169U (en) | 1992-08-26 |
Family
ID=4950049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92203423 Granted CN2114169U (en) | 1992-03-04 | 1992-03-04 | New-type magnetic measuring device of articles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2114169U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109720B (en) * | 2006-07-19 | 2011-02-16 | 西门子（中国）有限公司 | Method and apparatus for measuring change characteristic of magnetic material magnetic flux density according to temperature |
| CN102520379A (en) * | 2011-12-29 | 2012-06-27 | 钢铁研究总院 | Equipment and method for detecting temperature coefficient of remanence |
| 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 |
| CN106932740A (en) * | 2015-12-31 | 2017-07-07 | 北京中科三环高技术股份有限公司 | Permanent magnet magnetic flux device for investigating temperature coefficient and method |
| CN111208456A (en) * | 2020-01-20 | 2020-05-29 | 重庆科技学院 | High-low temperature magnetic property measuring device for weak magnetic material |
| CN111257806A (en) * | 2020-01-20 | 2020-06-09 | 重庆科技学院 | Method for measuring high-low temperature magnetic property of weak magnetic material |
| CN112730595A (en) * | 2020-12-18 | 2021-04-30 | 哈尔滨工业大学 | Magnetic flux online measurement method of permanent magnet material in high-temperature state |
| CN114047463A (en) * | 2021-08-25 | 2022-02-15 | 中国兵器工业第五九研究所 | Dynamic magnetic field multi-factor composite environment simulation device and method |
-
1992
- 1992-03-04 CN CN 92203423 patent/CN2114169U/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109720B (en) * | 2006-07-19 | 2011-02-16 | 西门子（中国）有限公司 | Method and apparatus for measuring change characteristic of magnetic material magnetic flux density according to temperature |
| CN102520379A (en) * | 2011-12-29 | 2012-06-27 | 钢铁研究总院 | Equipment and method for detecting temperature coefficient of remanence |
| CN102520379B (en) * | 2011-12-29 | 2014-03-26 | 钢铁研究总院 | Equipment and method for detecting temperature coefficient of remanence |
| CN106932740A (en) * | 2015-12-31 | 2017-07-07 | 北京中科三环高技术股份有限公司 | Permanent magnet magnetic flux device for investigating temperature coefficient and method |
| 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 |
| CN111208456A (en) * | 2020-01-20 | 2020-05-29 | 重庆科技学院 | High-low temperature magnetic property measuring device for weak magnetic material |
| CN111257806A (en) * | 2020-01-20 | 2020-06-09 | 重庆科技学院 | Method for measuring high-low temperature magnetic property of weak magnetic material |
| CN111208456B (en) * | 2020-01-20 | 2022-06-03 | 重庆科技学院 | High-low temperature magnetic property measuring device for weak magnetic material |
| CN112730595A (en) * | 2020-12-18 | 2021-04-30 | 哈尔滨工业大学 | Magnetic flux online measurement method of permanent magnet material in high-temperature state |
| CN114047463A (en) * | 2021-08-25 | 2022-02-15 | 中国兵器工业第五九研究所 | Dynamic magnetic field multi-factor composite environment simulation device and method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |