• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Continuous testing apparatus for determining the magnetic characteristics of a strip of moving material including a flux inducing and pick-up device to induce a quantity of flux into the material and dual voltage output producing coils for producing different voltages from material having the same magnetic permeability, and circuit means coupled with the dual coils to produce an output voltage which is a characteristic of the ratio of the voltage produced by one of the coils and the difference between the voltages produced by both of the coils. The invention also includes the method of obtaining a profile of the coil of the material throughout the entire length thereof.
    公开号:SU847947A3
    申请号:SU772516523
    申请日:1977-08-17
    公开日:1981-07-15
    发明作者:Ли Осборн Мерлин；Дилое Критзер Лэйтон
    申请人:Аллегени Ладлам Индастриз Инк (Фир-Ma)；
    IPC主号:
    专利说明:

    The invention relates to continuous testing of a strip material to determine its magnetic properties; Tests.
    "Known devices comprising a detection head, which is an H-shaped core with identical windings, are known. The disadvantage of this device is that the type tests do not determine the quality of the material in terms of magnetic properties over the entire length of the roll.
    The closest in technical essence to the present invention is a device comprising a unit for inducing and inducing a magnetizing current in a strip of moving material, two rectifiers, two indicators and a voltage divider 2}.
    The disadvantage of this device is low reliability.
    The purpose of the invention is to increase the reliability of the device.
    The goal is achieved in that a device for continuous testing of a steel strip material containing, for inducing and inducing 5 magnetizing current in a strip of moving material, two test strips, two indicators and a voltage divider, is inserted into a graph builder, with the first output of the unit for inducing and
    10 induction of magnetizing current through the first rectifier and the first indicator connected to the first input of the voltage divider, and the second output of the booster to induce and induce current
    16 magnetizing through the second rectifier and the second indicator is connected to the second input of the voltage divider, the output of which is connected to the output of the plotter.
    20 The drawing shows a block diagram of the device.
    The device contains a block I dp of induction and induction of magnetizing current in a strip of moving material, connectors 2 and 3, indicators 4 and 5, voltage divider 6, plotter 7 and strip material 8 Block 1 consists of magnetizable coil 9 and coil 10 inductance.
    The device works as follows.
    The magnetized coil 9 of the inductor for magnetizing the strip material is connected to a single-phase power source of 230 V, 60 Hz. In a circuit containing a magnetizing coil 9, the voltage is controlled by means of a control circuit or an ordinary type of current control for togo | in order to adjust the magnetizing current in the magnetized ideas of the inductor so as to magnetize material 8 to the level of UN E) or close to it. The specific power source is described for the purpose of explanation, and it should be understood that the use of a power source with a voltage of 10 10 volts or any other suitable convenient power source is not beyond the scope of this invention. The induction level in the strip material 8 is not critical, but experience shows that if the strip material is magnetized to 10 N (10 Oe) using Epstein test results at a level of 10 Oe as a quality indicator, correlation is achieved. The magnitude of the current may vary somewhat as Material 8 moves through the device or test device without any harmful effects. For any given quality of the band, the current in the exciter, or magnetized, the inductance is proportional to the magnetizing force. This means that as the current changes, the magnetizing force (Ee) also changes. This change is not critical, but in order to avoid big changes a constant current source should be used.
    The rectified output voltage of rectifier 2 is preferably supplied to an analog meter to obtain an analog voltage (current) taken from the inductor 10. The voltage removed from the inductor 10 and the rectified voltage from the rectifier 2 are supplied in such a phase ratio to obtain an output signal in the form of rectified voltage, which is the difference voltage between the coil voltages A and B. The rectified difference voltage of coils 9 and 10 is fed to another analog measuring device, such as, for example, a digital indicator 5 of direct current to obtain an analog output signal (direct current), which determines the differential voltage. voltage k Tyshek. The inductors 9 and 10 are designed in such a way that the voltage output signal removed from the coil 9 is always larger than the voltage output signal removed from the coil 0. Coils 9 and 10 are designed so that for one and the same amount of flux induced in the material 8 by the magnetizing coil 9, in the coil 9 always produces a higher voltage output signal than in the coil 10.
    Rectifier 2 is directly connected to coil 9 for rectifying the voltage applied to it and supplying rectified voltage to indicator 4. Digital indicators 4 and 5 can also include indicator elements for visualizing the voltage induced in inductor 10 and differential the voltage measured by the coils 9 and 10. With the outputs of the indicators 4 and 5, a divider 6 is connected, which is connected in such a way that the output signal ratio is provided.
    权利要求:
    Claims (2)
    [1]
    Invention Formula
    A device for continuous testing of a steel strip material containing a unit for inducing and inducing magnetizing current into a strip of moving material, two pulses of a plug, two indicators and a voltage divider, characterized in that, in order to increase the reliability of the device, a plotter is inserted into it, This is the first output of the unit for inducing and inducing the magnetizing current through the first rectifier, and the first indicator is connected to the first input of the voltage divider, and the second output of the unit for 58 inducing and induced magnetizing current through the second vypp Shtele and a second indicator connected to the second input of the voltage divider whose output is connected to the output plotter. 47947 Sources of information taken into account during the examination 1. US Patent No. 4079312, cl. G 01 R 33/12. 03/14/78. five
    [2]
    2. USSR author's certificate L 164898, cl. G 01 R 33 / 12,23.03.63.
    类似技术:
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    同族专利:
    公开号 | 公开日
    ES472125A1|1979-02-16|
    AU504764B2|1979-10-25|
    IT1079825B|1985-05-13|
    AU2761877A|1979-02-15|
    PL117616B1|1981-08-31|
    BE857868A|1978-02-17|
    YU199377A|1982-10-31|
    ZA774644B|1978-06-28|
    GB1590682A|1981-06-03|
    DE2760053A1|1982-09-23|
    AR227611A1|1982-11-30|
    HU182921B|1984-03-28|
    ES472124A1|1979-02-16|
    FR2362393A1|1978-03-17|
    ES472123A1|1979-02-16|
    DE2735214C2|1982-12-30|
    ES461667A1|1978-12-01|
    CA1095142A|1981-02-03|
    DE2760053C2|1984-01-26|
    US4079312A|1978-03-14|
    CS536577A2|1985-05-15|
    SE425333B|1982-09-20|
    IN148892B|1981-07-11|
    PL200322A1|1978-04-24|
    BR7705374A|1978-07-04|
    YU165682A|1985-03-20|
    FR2362393B1|1983-09-02|
    DE2735214A1|1978-02-23|
    MX147415A|1982-12-02|
    JPS5323672A|1978-03-04|
    SE7709242L|1978-02-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB403409A|1931-04-20|1933-12-18|Ferrous Magnetic Corp|Improved magnetic induction testing device and method of balancing the same|
    US2102451A|1936-04-23|1937-12-14|Magnetic Analysis Corp|Magnetic analysis|
    US2555853A|1945-04-16|1951-06-05|Emmett M Irwin|Magnetic testing apparatus and method|
    US2810880A|1954-03-25|1957-10-22|Velio S Buccicone|Apparatus for detecting magnetic objects or the like|
    US2927266A|1956-12-14|1960-03-01|Electro Seal Corp|Test circuit for magnetic core inductive reactors|
    US3130363A|1960-06-08|1964-04-21|United States Steel Corp|Apparatus for determining the magnetic condition of steel strip during continuous annealing|
    US3281678A|1962-04-26|1966-10-25|United States Steel Corp|Magnetic core-loss tester for continuous strip|
    US3421925A|1965-07-30|1969-01-14|Westinghouse Electric Corp|Method for producing improved metallic strip material|JPS5526636B2|1972-07-25|1980-07-15|
    US4383218A|1978-12-29|1983-05-10|The Boeing Company|Eddy current flow detection including compensation for system variables such as lift-off|
    FR2502337B1|1981-03-23|1983-04-22|Commissariat Energie Atomique|
    DE3152921C2|1981-07-28|1988-12-01|Inst Prikladnoi Fiziki Akademi|Method and device for determining the mechanical properties of a ferromagnetic specimen|
    US4555665A|1982-08-04|1985-11-26|Pa Incorporated|Magnetic flux method for measuring tubular wall thickness|
    CA1201481A|1982-10-22|1986-03-04|Valentino Cecco|Eddy current probe with defect-noise discrimination|
    US4578642A|1984-04-11|1986-03-25|Pa Incorporated|Method and apparatus for measuring velocity of ferromagnetic tubing|
    US4808924A|1987-02-19|1989-02-28|Atomic Energy Of Canada Limited|Circumferentially compensating eddy current probe with alternately polarized transmit coils and receiver coils|
    US4808927A|1987-02-19|1989-02-28|Atomic Energy Of Canada Limited|Circumferentially compensating eddy current probe with alternately polarized receiver coil|
    US5432444A|1990-10-23|1995-07-11|Kaisei Engineer Co., Ltd.|Inspection device having coaxial induction and exciting coils forming a unitary coil unit|
    EP0543648A1|1991-11-21|1993-05-26|Kaisei Engineer Co., Ltd.|Inspection device using electromagnetic induction and method therefor|
    US5327083A|1992-03-19|1994-07-05|Allegheny Ludlum Corporation|Method and apparatus using magnetic flux scanning to test grain structure of magnetic sheet material|
    DE102004006680B3|2004-02-09|2006-01-12|Balluff Gmbh|Sensor device for testing surfaces|
    EP1877767A2|2005-04-14|2008-01-16|O'Connor, Henry Moncrieff|Near fieldtm and combination near fieldtm - remote field electromagnetic testingprobes for inspecting ferromagnetic pipes and tubes such as those used in heat exchangers|
    FR2892521B1|2005-10-24|2008-01-04|Commissariat Energie Atomique|MAGNETIC PERMEABILITY MEASUREMENT SYSTEM AND REFERENCE SAMPLE USED THEREIN|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/715,098|US4079312A|1976-08-17|1976-08-17|Continuous testing method and apparatus for determining the magnetic characteristics of a strip of moving material, including flux inducing and pick-up device therefor|
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