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1. 发明专利

JPS5430867A TEMPERATURE COMPENSATING METHOD OF SHAPE DETECTORS 失效
公开(公告)号：JPS5430867A
公开(公告)日：1979-03-07
申请号：JP9609277
申请日：1977-08-12
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： ETOU KOUJI , FUJIWARA TAKANORI , KANETANI TADASHI , ITOU SUSUMU , SATOU KATSUTOSHI , OZAKA AKIRA
IPC分类号： G01B7/14 , G01B7/00 , G01B7/28 , G01B7/34
摘要： PURPOSE:To make possible accurate measurement irrespective of temperature by directly detecting the temperature change of the coil itself as resistance value.

2. 发明专利

JPS57137828A STRESS DETECTION 失效
公开(公告)号：JPS57137828A
公开(公告)日：1982-08-25
申请号：JP2336281
申请日：1981-02-19
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , MIZUKAMI SUSUMU , ITOU SUSUMU , FUJIMOTO MINORU
IPC分类号： G01L1/00 , G01L1/12 , G01L5/04
摘要： PURPOSE:To measure stress distributions in the width direction of a belt-like magnetic material instantaneously by dividing magnetostrictive sensors to two groups, and moving the respective groups in the width direction in conformity with the respective end part positions in the direction of the belt-like magnetic material. CONSTITUTION:The 1st magnetostrictive sensor group 42 and the 2nd magnetostrictive sensor group 44 consisting of plural pieces of L-shaped magnetostrictive sensors 40 are so arranged as to be moved in the width direction by means of a positioning cylinder. The sensors 42, 44 are so disposed that the respective sensors 40 are located specularly symmetrically with respect to the centerline C of a rolled steel plate 18, whereby the stress detecting positions of the groups 42, 44 are made symmetrical on the right and left. When tension acts in the rolling direction, differences are generated in the voltage detected by the coils 66, 68 in the respective directions, and from these voltage differnces, the stress distributions of the plate 18 are determined.

3. 发明专利

JPS57108603A DETECTING METHOD FOR CONFIGURATION 失效
公开(公告)号：JPS57108603A
公开(公告)日：1982-07-06
申请号：JP18475680
申请日：1980-12-25
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , SAMEJIMA ICHIROU , ITOU SUSUMU , WAKAMATSU YUTAKA
IPC分类号： G01L5/04 , B21C51/00 , G01B7/00 , G01B7/04 , G01B7/28 , G01B21/06 , G01B21/20
摘要： PURPOSE:To reliably determine the degree of configuration defect, by a method wherein configuration is evaluated by employing a detected stress signal as it is or an absolute stress obtained by correcting the detected stress signal by an overall tension according to whether the variation of a gap signal is below or above a given value. CONSTITUTION:An excitation coil 14 and detection coils 20, 22 are disposed along the moving direction of a belt-shaped magnetic substance 18 moving at high speed in order to measure the stress applied to the belt-shaped magnetic substance 18 by utilizing magnetostriction effect. In addition, the stress distribution in the width direction of the belt-shaped magnetic substance 18 is made known by detecting the gap between the detector and the belt-shaped magnetic substance 18, and the configuration of the belt- shaped magnetic substance 18 is evaluated from the stress distribution. When the variation of the gap signal is below a given value, i.e., in a state where configuration is latent, the configuration is latent, the configuration is evaluated by employing the detected stress signal as it is. On the other hand, when the vairation of the gap signal is above the given value, i.e., in a state where the configuration is actualized, the configuration is evaluated by employing an absolute stress obtained by correcting the detected stress signal by an overall tension.

4. 发明专利

JPS5430866A ROLLED STEEL PLATE SHAPE DETECTOR 失效
公开(公告)号：JPS5430866A
公开(公告)日：1979-03-07
申请号：JP9609177
申请日：1977-08-12
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： KITAO SEIJI , MIZUKAMI SUSUMU , ETOU KOUJI , KANETANI TADASHI , ITOU SUSUMU , SATOU KATSUTOSHI
IPC分类号： G01L5/10 , B21B38/02 , G01B7/00 , G01B7/28
摘要： PURPOSE:To prevent the mutual inteference of detectors with thermselves and accurately measure the flatness of rolled steel plates by dispoing U-shaped iron cores as triode iron cores on a flat plate of a non-magnetic material and when these detectors are arrayed in the width direction of a rolled steel plate.

5. 发明专利

JPS5790123A METHOD AND APPARATUS FOR DETECTING STRESS 失效
公开(公告)号：JPS5790123A
公开(公告)日：1982-06-04
申请号：JP16602580
申请日：1980-11-26
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , ITOU SUSUMU , WAKAMATSU YUTAKA
IPC分类号： G01L5/10 , G01L5/04
摘要： PURPOSE:To permit a proper detection of stress independently of the change in moving speed, by disposing a detection coil so as to be offset with respect to the moving locus of a strip magnetic substance passing right above an excitation coil. CONSTITUTION:By inclining an iron core 40 of an L-shaped detector at a given angle theta1 (e.g., 15-30 deg.) with respect to the rolling direction (moving direction) of a rolled steel plate, a rolling direction detecting coil 46 is disposed so as to be offset more than 1/2 of the magnetic pole width(b) of the iron core 40 along the width direction of the rolled steel plate with respect to the moving locus B of the rolled steel plate passing right above the center of an excitation coil 44, and also an iron core 42 disposed along the width direction of the plate is inclined at a given angle theta2 with respect to the plate width direction. Thereby, the residual magnetism of the rolled steel plate excited by the excitation coil 44 never passes right above the detecting coil 46 and consequently the voltage induced in the detecting coil 46 is hardly affected by the rolling speed. Accordingly, it becomes possible to perform a proper detection of stress.

6. 发明专利

JPS56157802A SHAPE DETECTOR 失效
公开(公告)号：JPS56157802A
公开(公告)日：1981-12-05
申请号：JP6056180
申请日：1980-05-09
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , KANETANI TADASHI , ITOU SUSUMU
IPC分类号： G01L5/04 , B21C51/00 , G01B7/00 , G01B7/24 , G01B7/28 , G01L5/10
摘要： PURPOSE:To permit a distortion detection with high accuracy by providing at least one unit for detecting the stress in the width and rolling directions midway in the width direction, and arranging a plurality of units for detecting the stress in the rolling diretion in parallel in the width direction. CONSTITUTION:A detecting unit 20 for the width and rolling directions comprising an exciting coil 1, U-shaped cores 7 and 8 and detecting coils 2 and 3 is arranged in the center, and on both sides thereof, a plurality of detecting units 30a... for the rolling direction are provided each comprising an exciting coil 15, a U-shaped core 14 and a detecting coil 16. When a steel plate passes with a gap between the end of each core, the voltages of the detecting coils 2, 3, 16, 18... vary according to the wavy distortion resulting from the unvenness of the internal stress. Said output voltages are rectified by means of rectifiers 21a, 21b, 31a.... The differences E20, E30a, E30b... between them and the DC voltage of the detecting coil 3 are the stress detecting voltages of the respective detecting units. The output voltage in the normal condition is previously balanced by means of the variable resistor of each rectifier circuit. Thereby, a distortion detection of high accuracy is made possible.

7. 发明专利

JPS5788334A STRESS DETECTOR 失效
公开(公告)号：JPS5788334A
公开(公告)日：1982-06-02
申请号：JP16499180
申请日：1980-11-21
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIROHATA KAZUHIRO , HIRASAKI SHIYUUICHI , WAKAMATSU YUTAKA , ITOU SUSUMU
IPC分类号： G01L5/10 , B21C51/00 , G01L5/04
摘要： PURPOSE:To perform suitable stress detection irrespectively of the change in moving speed by determining suitably the spacings of an exciting coil and detecting coils in the moving direction of a striplike magnetic material or the excitation frequency of the exciting coil. CONSTITUTION:A stress detector has an exciting coil 44 and detecting coils 46, 48 disposed along the moving direction of a striplike magnetic material 18 moving at high speeds and detects the stress applied upon the material 18 by utilizing magnetostrictive effect. At least either one of the spacings between the coil 44 and the coils 46, 48 in the moving direction of the striplike magnetic material or the excitation frequency of the coil 44 is determined in such a way that the outputs of the coils 46, 48 do not attain the maximal value by the influence of residual magnetism in accordance with the max. moving speed of the material 18.

8. 发明专利

JPS54130061A STEEL PLATE SHAPE DETECTOR PREVENTING MUTUAL INTERFERENCES 失效
公开(公告)号：JPS54130061A
公开(公告)日：1979-10-09
申请号：JP3659878
申请日：1978-03-31
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： FUJIWARA TAKANORI , IBUSUKI TOYOAKI , KANETANI TADASHI , ITOU SUSUMU , SATOU KATSUTOSHI
IPC分类号： G01L5/04 , B21B38/02 , G01B7/00 , G01B7/16 , G01B7/28
摘要： PURPOSE:To improve detection accuracy and sensitivity by providing magnetical shield bodies on core side faces and maintaining the distance between the shield bodies and the cores at more than twice the distance from the cores up to the steel plate to be detected of its shape. CONSTITUTION:This device obtains the flatness of a rolled steel plate by making use of the fact that there is a fixed proportional relation between the magnetic permeability and internal stress of the rolled steel plate, wherein the detector comprises combining two laminated U-form cores 7, 8 at a right angle, providing an excitation coil 1 at the contact point of the magnets thereof and simultaneously providing pressure detecting coils 2, 3 and gap detecting coils 4, 5. Magnetic shield plates 15 composed of magnetic material are provided near the side faces of the respective detectors constituted in this way so that the leaking magnetic flux emitting from the primary coil 1 is made difficult to reach the other detector. In addition, these are so constituted that the distance B from the shield plates 15 up to the core 8 is maintained more than twice the distance lg between the core 8 and the steel plate 6.

9. 发明专利

JPS5874490A METHOD OF HANDLING SLAB BY MEANS OF OVERHEAD TRAVELLING CRANE WITH SLAB GRASPING LIFTER 失效
公开(公告)号：JPS5874490A
公开(公告)日：1983-05-04
申请号：JP17259781
申请日：1981-10-27
申请人： KAWASAKI STEEL CO
发明人： ISHII KIYOO , ITOU SUSUMU , KAWAMURA MIKIO , TSUKAMOTO TADASHI
IPC分类号： B22D29/00 , B66C13/32 , B66C17/06 , B66C17/08 , B66C17/10 , B66C17/12

10. 发明专利

JPS5675516A SOAKING METHOD OF STEEL INGOT 失效
公开(公告)号：JPS5675516A
公开(公告)日：1981-06-22
申请号：JP15068779
申请日：1979-11-22
申请人： KAWASAKI STEEL CO
发明人： ITOU SUSUMU , ONI TERUO
IPC分类号： C21D1/52 , C21D9/70 , C21D1/34
摘要： PURPOSE:To make possible soaking without impairing surface characteristic by charging the hot steel ingot of high crack sensitivity after the removal from mold into a soaking pit in a nonheating atmosphere to apply heat-insulation soaking, charging necessary fuel prior to extraction and heating and soaking the ingot to a minumum extractable temp. CONSTITUTION:In soaking a steel etc. of high S content and high crack sensitivity, the hot steel ingot after removal from mold is charged into a soaking pit of about =75% out of the residence time (within about 4hr) to be selected depending upon the kind and heat hysterisis of that steel ingot. Just before the extraction, the necessary fuel is charged to heat and soak the steel ingot to the minimum extraction temp. which has been standardized depending upon the varying intensities of the crack sensitivity of the steel ingot. In this way, the infurnace temp. at the initial state of the residence of the steel ingot in the furnace may be lowered, whereby the solidification of the steel ingot inside is accelerated and the residence time is shortened. In addition, the unsolidified rolling is averted and the occurrence of defects such as blisters is eliminated; moreover, the fuel unit may be decreased considerably.

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