CN203719619U - Electrical steel thickness measuring device - Google Patents
Electrical steel thickness measuring device Download PDFInfo
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- CN203719619U CN203719619U CN201420040903.8U CN201420040903U CN203719619U CN 203719619 U CN203719619 U CN 203719619U CN 201420040903 U CN201420040903 U CN 201420040903U CN 203719619 U CN203719619 U CN 203719619U
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- plane
- capacitance
- parallel capacitor
- electrical sheet
- capacitor
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- 229910000976 Electrical steel Inorganic materials 0.000 title abstract description 7
- 239000003990 capacitor Substances 0.000 claims abstract description 142
- 238000012545 processing Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 17
- 230000005855 radiation Effects 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 15
- 238000005259 measurement Methods 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses an electrical steel thickness measuring device. The device comprises a first parallel plate capacitor and a second parallel plate capacitor; the first parallel plate capacitor presents a first capacitance value when the electrical steel passes through two polar plates of the first parallel plate capacitor; the second parallel plate capacitor presents a second capacitance value when no other object exists between the two polar plates of the second parallel plate capacitor; relative areas of the two polar plates and the distance between the two polar plates of either the first parallel plate capacitor or the second parallel plate capacitor are the same; both the first parallel plate capacitor and the second parallel plate capacitor are connected onto a data processing device; and the data processing device is used for carrying out calculation to obtain the electrical steel thickness according to the first capacitance value and the second capacitance value. According to the electrical steel thickness measuring device, the thickness measuring precision is not influenced by environmental factors such as dust, water vapor and wind, no radiation hazards are caused to the environment and the human body during the use process, and the use is convenient.
Description
Technical field
The utility model relates to electrical sheet manufacture field, especially, relates to a kind of electrical sheet measurer for thickness.
Background technology
Electrical sheet also claims siliconized plate, is the indispensable important magnetically soft alloy of electric power, electronics and war industry, is also the Metallic Functional Materials of output maximum, is mainly used as the iron core of various motors, generator and transformer.Along with improvement and the day by day raising of people to electrical steel product quality control requirement of electrical sheet processing technology, more and more urgent to the demand of electrical sheet iron loss observing and controlling.The discontented sufficient use for laboratory epstein frame method of people is measured the iron loss of electrical sheet, requires on-line continuous to carry out iron loss measurement.
The definition of iron loss is the power attenuation of unit mass.On production line, it is a very difficult thing that the electrical steel strip of continuous operation is carried out to direct measurement of quality, generally by measuring average thickness, carry out calculated mass (computing formula: quality=mass density * average thickness * mean breadth * tape running speed), wherein tape running speed is taken from the speed pickup on production line.With reference to Fig. 1, existing measurement average thickness method mainly adopts gamma-rays method and χ rays method, utilizes the principle of work that material thickness difference is different from scattering to the absorption of radiation source.To same material, thickness is larger, the more, the transmitted intensity of taking in nuclear radiation detector is less for radiation-absorbing, and metering circuit detects the electric signal that obtains reacting transmitted intensity, can reach under reference condition ± 1 μ m of its precision, but be subject to the impact of the environmental baselines such as dust, steam, only have ± 4 μ m of its precision, cause iron loss measuring accuracy to decline to a great extent, and the module related measurement devices of gamma-rays method and χ rays method is expensive, and the ray producing while measuring can cause radiation hazard to environment and human body.
Utility model content
The utility model object is to provide a kind of electrical sheet measurer for thickness and measuring method, is subject to the environmental influences such as dust, steam, measuring accuracy is low and causes the technical matters of radiation hazard while measuring to solve when existing gamma-rays method and χ rays method are measured.
For achieving the above object, the technical solution adopted in the utility model is as follows:
The utility model provides a kind of electrical sheet measurer for thickness, comprises
The first plane-parallel capacitor and the second plane-parallel capacitor, the first plane-parallel capacitor is for presenting the first capacitance at electrical sheet through time between two pole plates of the first plane-parallel capacitor, and the second plane-parallel capacitor for presenting the second capacitance during without other objects between two pole plates of the second plane-parallel capacitor;
The relative area of two pole plates of the first plane-parallel capacitor and the second plane-parallel capacitor and two polar plate spacings are from all equating, the first plane-parallel capacitor and the second plane-parallel capacitor are all connected to data processing equipment;
Data processing equipment is for calculating the thickness of electrical sheet according to the first capacitance and the second capacitance.
Further, two pole plates of the first plane-parallel capacitor lay respectively at upper and lower side and the opposing parallel setting of the conveying belt of electrical sheet to be measured, and two pole plates correspondence on internal face in opposite directions of the first plane-parallel capacitor is provided with the first concave part; Two pole plates correspondence on internal face in opposite directions of the second plane-parallel capacitor is provided with the second concave part, and the first concave part is identical with the shape of the second concave part.
Further, two pole plates of two of the first plate condenser pole plates and the second plane-parallel capacitor all adopt alloy steel to make.
Further, data processing equipment comprises: convert of capacitor to voltage module, analog-to-digital conversion module and processing module, wherein,
Convert of capacitor to voltage module is used for the first capacitance to change into the first magnitude of voltage, and converts the second capacitance to second voltage value;
Analog-to-digital conversion module converts the first magnitude of voltage to first digital quantity, and converts second voltage value to second digital quantity;
Processing module is for calculating the thickness of electrical sheet according to the first digital quantity and the second digital quantity.
Further, the funtcional relationship of the thickness of the first capacitance and the second capacitance and electrical sheet is:
Wherein, the thickness that d is electrical sheet, D be the first plane-parallel capacitor two polar plate spacings from, C is the first capacitance, C
0it is the second capacitance.
The utlity model has following beneficial effect:
The utility model electrical sheet measurer for thickness, adopt two plane-parallel capacitors to carry out on-line measurement to the thickness of electrical sheet, wherein, the first plane-parallel capacitor presents the first capacitance while being used for passing electrical sheet to be measured between two capacitor plates, the second plane-parallel capacitor for presenting the second capacitance during without other objects between two capacitor plates, the first plane-parallel capacitor and the second plane-parallel capacitor are all connected to data processing equipment, data processing equipment calculates the thickness of electrical sheet according to the first capacitance and the second capacitance, the thickness accuracy of detection of this pick-up unit is not subject to dust, the impact of the environmental factor such as steam and wind, and to environment and human body, can not cause radiation hazard in testing process, easy-to-use, and improved the precision that electrical sheet on-line continuous is carried out iron loss measurement.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the principle schematic of rays method on-line measurement electrical sheet thickness in prior art;
Fig. 2 is the structural representation of the utility model preferred embodiment electrical sheet measurer for thickness; And
Fig. 3 is the structural representation of the first plane-parallel capacitor in the utility model preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
With reference to Fig. 2 and Fig. 3, preferred embodiment of the present utility model provides a kind of electrical sheet measurer for thickness, comprise the first plane-parallel capacitor and the second plane-parallel capacitor, the first plane-parallel capacitor is for presenting the first capacitance at electrical sheet through time between two pole plates of the first plane-parallel capacitor, and the second plane-parallel capacitor for presenting the second capacitance during without other objects between two pole plates of the second plane-parallel capacitor; The relative area of two pole plates of the first plane-parallel capacitor and the second plane-parallel capacitor and two polar plate spacings are from all equating, the first plane-parallel capacitor and the second plane-parallel capacitor are all connected to data processing equipment; Data processing equipment is for calculating the thickness of electrical sheet according to the first capacitance and the second capacitance.
In the present embodiment, the first plane-parallel capacitor comprises the parallel capacitor plate being oppositely arranged 3 and capacitor plate 4, the second plane-parallel capacitor comprises the parallel capacitor plate being oppositely arranged 1 and capacitor plate 2, distance between distance between capacitor plate 1 and capacitor plate 2 and capacitor plate 3 and capacitor plate 4 is D, capacitor plate 1, capacitor plate 2, the surface area of capacitor plate 3 and capacitor plate 4 is S, electrical sheet to be measured is through the region between capacitor plate 3 and capacitor plate 4, through the space between two pole plates of the first plane-parallel capacitor.In the present embodiment, electrical sheet to be measured is sheet or band shape.
The specific inductive capacity of supposing air is ε
0, the second plane-parallel capacitor is as with reference to capacitor, when presenting without electrical sheet (band), and the capacitance between capacitor plate 1 and capacitor plate 2, i.e. the second capacitance C
0, the second capacitance C
0for standard electric capacitance, computing formula is:
When electrical sheet to be measured (band) is conveyed between capacitor plate 3 and capacitor plate 4, now the capacitance between two capacitor plates can change, if the capacitance that the first plane-parallel capacitor now detects is C, i.e. the first capacitance C, computing formula is:
In formula (2), D is the distance between capacitor plate 3 and capacitor plate 4, ε
0for the specific inductive capacity of air, S is the relative area between capacitor plate 3 and capacitor plate 4, the thickness that d is electrical sheet to be measured.
By formula formula (1) and formula (2), by converting, draw:
In formula (3), the thickness that d is electrical sheet, D be the first plane-parallel capacitor two polar plate spacings from, C is the first capacitance, C
0it is the second capacitance.Because D is definite value, by measuring C and C
0value, can accurately calculate the thickness d of electrical sheet to be measured (band).In the present embodiment, by the first plane-parallel capacitor, present C, the second plane-parallel capacitor presents C
0, and the first plane-parallel capacitor and the equal access data treating apparatus of the second plane-parallel capacitor, data processing equipment can be measured C and C in real time
0value, and according to C and C
0value calculate the thickness of electrical sheet to be measured (band), and in the present embodiment, the measuring accuracy of electric capacity can reach 1 * 10
-15therefore F, has guaranteed the measuring accuracy of electrical sheet to be measured (band) thickness.
With reference to Fig. 3, in the present embodiment, preferably, in order to improve the capacitance detecting precision of the first plane-parallel capacitor and the second plane-parallel capacitor, capacitor plate 1 and capacitor plate 2 corresponding first concave part that is provided with on internal face in opposite directions, capacitor plate 3 and capacitor plate 4 correspondence on internal face is in opposite directions provided with the second concave part, and the first concave part is identical with the shape of the second concave part.By design groove structure on two pole plates of the first plane-parallel capacitor and the second plane-parallel capacitor, make the first plane-parallel capacitor and the second plane-parallel capacitor more firm with respect to the structure of the capacitor of the electrode plate structure of plane, thereby avoided deformation and the change in displacement between capacitor plate.Preferably, two pole plates of the first plate condenser and two pole plates of the second plane-parallel capacitor all adopt alloy steel to make, and make the deformation between two pole plates of capacitor be less than 1 μ m, thereby have guaranteed the accuracy of capacitance.In the present embodiment, form the capacitor plate 3 of the first plane-parallel capacitor, upper and lower side and the opposing parallel setting of conveying belt that capacitor plate 4 is individually fixed in electrical sheet to be measured, in the present embodiment, conveying belt both sides by the electrical sheet to be measured arrange two fixed strips, the both sides of capacitor plate 3 and capacitor plate 4 are fixedly connected with fixed strip by two screws respectively, to prevent the deformation of capacitor plate 3 and capacitor plate 4.
Preferably, in the present embodiment, data processing equipment comprises: convert of capacitor to voltage module, analog-to-digital conversion module and processing module.Wherein, convert of capacitor to voltage module changes into the first magnitude of voltage for the first capacitance that the first plane-parallel capacitor is presented, and the second capacitance that the second plane-parallel capacitor is presented converts second voltage value to; Analog-to-digital conversion module converts the first magnitude of voltage to first digital quantity, and converts second voltage value to second digital quantity; Processing module is for calculating the thickness of electrical sheet according to the first digital quantity and the second digital quantity, because the first digital quantity exists corresponding funtcional relationship with the first capacitance, there is corresponding funtcional relationship with the second capacitance in the second digital quantity, then according to formula (3), obtains the thickness of electrical sheet to be measured.
The utility model measurement mechanism, adopt the first plane-parallel capacitor and the second plane-parallel capacitor, wherein, the first plane-parallel capacitor is for presenting through the first capacitance between two pole plates of electrical sheet to be measured in real time, the second capacitance between two pole plates when the second plane-parallel capacitor is used for presenting without other objects in real time, using the second capacitance as with reference to capacitance, calculate the thickness of electrical sheet to be measured, the impact of the capacitance precision that the vibration deformation of the two-plate that has shielded like this capacitor in working environment causes, thereby guaranteed the thickness measure precision of electrical sheet.
According on the other hand of the present utility model, a kind of electrical sheet method for measuring thickness is also provided, comprise the following steps:
Obtain the first capacitance of the first plane-parallel capacitor, wherein, the capacitance while having electrical sheet to be measured to pass between two pole plates of first capacitance the first plane-parallel capacitor;
Obtain the second capacitance of the second plane-parallel capacitor, wherein, the second capacitance is the capacitance during without other objects between two pole plates of the second plane-parallel capacitor; Relative area between two pole plates of the first plane-parallel capacitor and the second plane-parallel capacitor and two polar plate spacings are from all equating;
According to the first capacitance and the second capacitance, calculate the thickness of electrical sheet.
Further, the funtcional relationship of the thickness of the first capacitance and the second capacitance and electrical sheet is:
Wherein, the thickness that d is electrical sheet, D be the first plane-parallel capacitor two polar plate spacings from, C is the first capacitance, C
0it is the second capacitance.
Preferably, the utility model measuring method also comprises: the first capacitance measuring according to a plurality of moment and the second capacitance of corresponding moment correspondence calculate the thickness of the electrical sheet of a plurality of moment correspondences, and the thickness of the electrical sheet of a plurality of moment correspondences is got to the average thickness that average obtains electrical sheet.
Preferably, the utility model measuring method also comprises: the quality that calculates electrical sheet according to the average thickness of electrical sheet.The computing formula of the quality of electrical sheet is:
m＝ρv＝ρSd
Wherein, the quality that m is electrical sheet, the density that ρ is electrical sheet, the tape running speed that v is electrical sheet, the average thickness that d is electrical sheet, the area that S is electrical sheet.
Preferably, the step that calculates the thickness of electrical sheet according to the first capacitance and the second capacitance comprises: the first capacitance that the first plane-parallel capacitor is presented changes into the first magnitude of voltage;
The second capacitance that the second plane-parallel capacitor is presented converts second voltage value to;
The first magnitude of voltage and second voltage value are generated to the first digital quantity and the second digital quantity through analog to digital conversion respectively,
According to the first digital quantity and the second digital quantity, calculate the thickness of electrical sheet.
The utility model electrical sheet measurer for thickness and measuring method, adopt two plane-parallel capacitors to carry out on-line measurement to the thickness of electrical sheet, wherein, the first plane-parallel capacitor presents the first capacitance while being used for passing electrical sheet to be measured between two capacitor plates, the second plane-parallel capacitor for presenting the second capacitance during without other objects between two capacitor plates, the first plane-parallel capacitor and the second plane-parallel capacitor are all connected to data processing equipment, data processing equipment calculates the thickness of electrical sheet according to the first capacitance and the second capacitance, the thickness accuracy of detection of this detection method and pick-up unit is not subject to dust, the impact of the environmental factor such as steam and wind, and to environment and human body, can not cause radiation hazard in testing process, easy-to-use, and improved the precision that electrical sheet on-line continuous is carried out iron loss measurement.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. an electrical sheet measurer for thickness, is characterized in that, comprising:
The first plane-parallel capacitor and the second plane-parallel capacitor, described the first plane-parallel capacitor is for presenting the first capacitance at described electrical sheet through time between two pole plates of described the first plane-parallel capacitor, and described the second plane-parallel capacitor for presenting the second capacitance during without other objects between two pole plates of described the second plane-parallel capacitor;
The relative area of two pole plates of described the first plane-parallel capacitor and described the second plane-parallel capacitor and two polar plate spacings are from all equating, described the first plane-parallel capacitor and described the second plane-parallel capacitor are all connected to data processing equipment;
Described data processing equipment is for calculating the thickness of described electrical sheet according to described the first capacitance and described the second capacitance.
2. electrical sheet measurer for thickness according to claim 1, is characterized in that,
Two pole plates of described the first plane-parallel capacitor lay respectively at upper and lower side and the opposing parallel setting of the conveying belt of described electrical sheet to be measured, and two pole plates correspondence on internal face in opposite directions of described the first plane-parallel capacitor is provided with the first concave part; Two pole plates correspondence on internal face in opposite directions of described the second plane-parallel capacitor is provided with the second concave part, and described the first concave part is identical with the shape of described the second concave part.
3. electrical sheet measurer for thickness according to claim 2, is characterized in that,
Two pole plates of described the first plate condenser and two pole plates of described the second plane-parallel capacitor all adopt alloy steel to make.
4. electrical sheet measurer for thickness according to claim 1, is characterized in that,
Described data processing equipment comprises: convert of capacitor to voltage module, analog-to-digital conversion module and processing module, wherein,
Described convert of capacitor to voltage module is used for described the first capacitance to change into the first magnitude of voltage, and converts described the second capacitance to second voltage value;
Described analog-to-digital conversion module converts described the first magnitude of voltage to first digital quantity, and converts described second voltage value to second digital quantity;
Described processing module is for calculating the thickness of described electrical sheet according to described the first digital quantity and described the second digital quantity.
5. electrical sheet measurer for thickness according to claim 1, is characterized in that,
The funtcional relationship of the thickness of described the first capacitance and described the second capacitance and described electrical sheet is:
Wherein, the thickness that d is described electrical sheet, D be described the first plane-parallel capacitor two polar plate spacings from, C is described the first capacitance, C
0for described the second capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040903.8U CN203719619U (en) | 2014-01-22 | 2014-01-22 | Electrical steel thickness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040903.8U CN203719619U (en) | 2014-01-22 | 2014-01-22 | Electrical steel thickness measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN203719619U true CN203719619U (en) | 2014-07-16 |
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| CN201420040903.8U Expired - Lifetime CN203719619U (en) | 2014-01-22 | 2014-01-22 | Electrical steel thickness measuring device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759630A (en) * | 2014-01-22 | 2014-04-30 | 长沙天恒测控技术有限公司 | Device and method for measuring thickness of electrical steel |
| CN104390580A (en) * | 2014-12-04 | 2015-03-04 | 上海集成电路研发中心有限公司 | Metal film film-thickness measuring system and method of measuring film-thickness by adopting system |
| CN105953719A (en) * | 2016-06-24 | 2016-09-21 | 国家档案局档案科学技术研究所 | Nondestructive archival paper measuring instrument and method for simultaneous measurement of water content and thickness of paper |
| CN106352784A (en) * | 2016-09-30 | 2017-01-25 | 哈尔滨理工大学 | MXT9030-based thin film thickness measurement system |
| CN111982161A (en) * | 2020-07-30 | 2020-11-24 | 拉扎斯网络科技（上海）有限公司 | Conductor object position determining method and device |
-
2014
- 2014-01-22 CN CN201420040903.8U patent/CN203719619U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759630A (en) * | 2014-01-22 | 2014-04-30 | 长沙天恒测控技术有限公司 | Device and method for measuring thickness of electrical steel |
| CN103759630B (en) * | 2014-01-22 | 2017-05-24 | 长沙天恒测控技术有限公司 | Device and method for measuring thickness of electrical steel |
| CN104390580A (en) * | 2014-12-04 | 2015-03-04 | 上海集成电路研发中心有限公司 | Metal film film-thickness measuring system and method of measuring film-thickness by adopting system |
| CN104390580B (en) * | 2014-12-04 | 2018-06-22 | 上海集成电路研发中心有限公司 | Metal film film thickness measurement system and the method that film thickness measurement is carried out using the system |
| CN105953719A (en) * | 2016-06-24 | 2016-09-21 | 国家档案局档案科学技术研究所 | Nondestructive archival paper measuring instrument and method for simultaneous measurement of water content and thickness of paper |
| CN105953719B (en) * | 2016-06-24 | 2019-06-14 | 国家档案局档案科学技术研究所 | Lossless archives paper measuring instrument and the method for measuring Paper Moisture and thickness simultaneously |
| CN106352784A (en) * | 2016-09-30 | 2017-01-25 | 哈尔滨理工大学 | MXT9030-based thin film thickness measurement system |
| CN111982161A (en) * | 2020-07-30 | 2020-11-24 | 拉扎斯网络科技（上海）有限公司 | Conductor object position determining method and device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device and method for measuring thickness of electrical steel Effective date of registration: 20190618 Granted publication date: 20140716 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECHNOLOGY CO.,LTD. Registration number: 2019430000056 |
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Date of cancellation: 20200918 Granted publication date: 20140716 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECHNOLOGY Co.,Ltd. Registration number: 2019430000056 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electrical steel thickness measuring device Effective date of registration: 20201223 Granted publication date: 20140716 Pledgee: Changsha Lugu sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2020980009875 |
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Date of cancellation: 20211229 Granted publication date: 20140716 Pledgee: Changsha Lugu sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECHNOLOGY CO.,LTD. Registration number: Y2020980009875 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electrical steel thickness measuring device Effective date of registration: 20220104 Granted publication date: 20140716 Pledgee: Changsha Lugu sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECHNOLOGY CO.,LTD. Registration number: Y2021430000103 |
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Date of cancellation: 20230209 Granted publication date: 20140716 Pledgee: Changsha Lugu sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECHNOLOGY CO.,LTD. Registration number: Y2021430000103 |
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