• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    1405207 Electro-physical measurement - flatness NIPPON STEEL CORP 24 Sept 1973 [29 Sept 1972] 44617/73 Heading G1N [Also in Division G3] To measure the flatness of nominally flat strip material 11, (such as sheet steel from a cold rolling mill), it is held under tension between rolls 12 and deflected at right angles to its planes by the electromagnetic force from pulsed inductors B. The deflection of the strip is detected by a plurality of capacitor plates mounted transversely below the strip. The signal processing circuit 19 for each capacitor is substantially self-explanatory as shown in Fig. 2 and the output may be applied to a CRT display 21 and or an automatic mill tension control. Integration of the deflection signal in synchronizm with the electromagnetic excitation effectively averages out signals due to waving movement of the strip. The Specification shows that the integrated signal gives a more linear response and is substantially proportional to tension. Instead of a rectangular wave as used in Fig. 2, a random signal or sine-wave may be used. In such cases the deflection signal may be multiplied by the exciting signal.
    公开号:SU890992A3
    申请号:SU731962304
    申请日:1973-09-28
    公开日:1981-12-15
    发明作者:Такада Цутому；Тоета Тосио；Огасавара Акинобу；Ямато Сюнсуки
    申请人:Ниппон Стил Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to a measurement technique, namely to the measurement of stresses and deflections in products, and can be used to control the shape of flat products during their manufacture by the rolling method.
    A known method of controlling the shape of flat products, which consists in the fact that the surface sections of the product are affected by a deflecting force of a fixed intensity created by the pressure of the gas jet, the displacement of surface points in these areas is measured, and the force and displacement ratio judge the shape of the flat product and its deviations from the given plane P.
    However, this method does not provide the required measurement accuracy due to the fact that the measurement result includes random fluctuations in the magnitude of the deflection associated with the movement of the product in space.
    The closest in technical essence and the achieved effect to
    The invention is a method of controlling the shape of flat products, which consists in that the parts of the surface of the product are periodically affected by a disturbing force from the exciters of oscillations of various shapes, the displacement of surface points in these areas is measured and judged by the ratio of these parameters
    10 voltages and the shape of the controlled product 2J.
    However, this method does not provide the required accuracy, since the measurement results are distorted as a result of
    15 random fluctuations when moving the product.
    The purpose of the invention is to improve the measurement accuracy.
    The goal is achieved by
    权利要求:
    Claims (2)
    [1]
    20 that the product is affected by force; hopping from zero to a given value and from a given value to a zero, or an alternating force, varying in a sinusoidal 2S law. 389 The drawing shows the implementation scheme of the proposed method. . The method is carried out as follows. The controlled article 1, for example, a rolled metal strip, is passed through rollers 2 and 3, resulting in a separation of the product between the rollers, which is subjected to control. The force exciter unit 4, structurally integrated with displacement meters 5, is placed between rollers 2 and 3. The force actuator k is applied to product 1 by force jumps from a given value to zero, or by an alternating force varying in sinusoidal law, by supplying a control signal from the generator 6 through the amplifier 7, the movement of the product 1 through the meters 5 is controlled. The signal from the meters 5 is fed to the input of the amplifier 8, and then the signals of the generators 6 and the amplifier 8 are processed together This method is used to reveal the relation between these signals, which makes it possible to reveal the relationship between stresses and deflections in individual parts of the product in width, eliminating the error associated with fluctuations in the space of the product 1. Signal processing wire t in block 9 of the analyzer. The output signal to the analog display unit 10, built on the basis of a cathode ray tube, reproduces on the screen the shape of the controlled section of the product 1 at the required magnification scale in the direction of the normal to the test surface. The use of this method in rolling production, especially in cold rolling mills, allows obtaining information on current deviations of the product shape from a given plane with high accuracy and improved resolution over the width of the strip. Claim Method The method of controlling the shape of flat products, which consists in periodically exerting a force on the surface of the product, measures the displacement of surface points on these areas, and judging by the ratio of these parameters, the magnitude of internal stresses and the shape of the product being tested, characterized in that In order to improve the accuracy of measurement, the product is affected by a force that varies in steps from zero to a given value and from a given value to zero, or an alternating force that varies with si usoidalnomu law. Sources of information taken into account in the examination 1.US Patent N 3538765, cl. 73-1, 1970.
    [2]
    2. US Patent No. З 03553, cl. 73-1, 1968 (prototype).
    类似技术:
    公开号 | 公开日 | 专利标题
    SU890992A3|1981-12-15|Method of control of flat article shape
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    CA2428377C|2009-03-31|Method of and apparatus for measuring planarity of strip, especially metal strip
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    US4083002A|1978-04-04|Method and apparatus for measuring cross sectional area and weight per unit length of elongated, conductive material by magnetic field displacement
    US3496744A|1970-02-24|Method and apparatus for controlling the contours of rolling mill rolls to obtain metal sheet or strip of superior flatness
    US4309902A|1982-01-12|Method for continuously measuring steepness of defective flatness of metal strip during rolling
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    US3969668A|1976-07-13|Method for checking the planarity of a cold-rolled ferromagnetic strip
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    RU2486979C2|2013-07-10|Measuring roll for detection of strip flatness defects | and method of detecting strip flatness defects
    US2332289A|1943-10-19|Method and means for leveling rolling mills
    US3502968A|1970-03-24|Eddy current inductive flatness measurement device
    DE2600154C2|1982-08-26|Method and device for measuring the thickness of flat material by means of sound waves
    US6668626B2|2003-12-30|System and a method for measuring and determining flatness
    US4070614A|1978-01-24|Magnetoelastic shape meter for cold-rolled strips of ferromagnetic material
    US3509751A|1970-05-05|Method and apparatus for detecting local irregularities on strips and controlling the evenness of strips
    US20010007422A1|2001-07-12|Method of and apparatus for contactless planarity measurements on ferromagnetic metal strip
    US3475935A|1969-11-04|Control apparatus and system for strip rolling
    GB1490906A|1977-11-02|Method of and apparatus for measuring the average size of a group of apertures
    US3334231A|1967-08-01|Plate thickness measuring device with means to adjust source voltage in response to thickness variations
    US5373545A|1994-12-13|Method for the on-line nondestructive measurement of a characteristic of a continuously produced
    同族专利:
    公开号 | 公开日
    DE2348587A1|1974-04-11|
    US3938382A|1976-02-17|
    JPS5317071B2|1978-06-06|
    DE2348587C3|1979-05-23|
    JPS4956660A|1974-06-01|
    DE2348587B2|1978-09-14|
    GB1405207A|1975-09-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1264100B|1964-02-13|1968-03-21|Asea Ab|Arrangement in strip rolling mills for measuring the distribution of strip tension across the strip width|
    US3334508A|1964-11-09|1967-08-08|American Metal Climax Inc|Method and apparatus for controlling flatness in sheet metal|
    DE1573407B1|1965-10-05|1970-09-03|Asea Ab|Arrangement in strip rolling mills to measure the distribution of the strip tension over the strip width|
    DE1573831C3|1966-09-03|1976-01-02|Schloemann-Siemag Ag, 4000 Duesseldorf|Device for determining tensile stresses occurring in thin cold rolled strips|
    US3599485A|1969-06-26|1971-08-17|Wolfgang Muhlberg|Process for measurements of longitudinal stresses in metal bands under longitudinal tension|
    AT329902B|1973-05-23|1976-06-10|Voest Ag|METHOD FOR DETERMINING TENSION DISTRIBUTION OVER THE WIDTH OF A COLD-ROLLED STRIP AND DEVICE FOR CARRYING OUT THE METHOD|JPS52107886A|1976-03-05|1977-09-09|Hitachi Ltd|Tension detector for steel strip|
    US4335603A|1980-08-13|1982-06-22|Beloit Corporation|Sonic measurement of web tension|
    US4347735A|1980-12-15|1982-09-07|International Business Machines Corporation|Process for monitoring solvent content of green ceramic sheet, and apparatus therefor|
    JPS5870105A|1981-10-22|1983-04-26|Mitsubishi Electric Corp|Shape detector|
    JPS5870102A|1981-10-22|1983-04-26|Mitsubishi Electric Corp|Shape detector|
    DE19839286B4|1998-08-28|2004-12-02|Siemens Ag|Method and device for measuring the tension distribution in a metal strip|
    US6363621B1|1999-03-25|2002-04-02|International Paper Company|Method and apparatus for testing web bagginess|
    EP2362178A1|2008-10-31|2011-08-31|Fujikura Ltd.|Capacitance-type sensor|
    CN103008389B|2011-09-23|2014-11-05|上海宝钢设备检修有限公司|Device for controlling automatic centering of cold-rolling strip steel uncoiler|
    CN110470211B|2019-05-15|2021-05-07|哈尔滨锅炉厂有限责任公司|Be applied to high-efficient inspection device of diaphragm type wall centre gripping band steel centering size|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP9781672A|JPS5317071B2|1972-09-29|1972-09-29|
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