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    • 1. 发明专利
    • Method for detecting defect of steel material
    • 检测钢材缺陷的方法
    • JP2012237639A
    • 2012-12-06
    • JP2011106652
    • 2011-05-11
    • Nippon Steel Corp新日本製鐵株式会社
    • ITO TADAYUKIDOKI MASAHIROKOJIMA KATSUYAKOSUGI SATOSHINAKAGAWA JUNICHI
    • G01N21/892G06T1/00
    • PROBLEM TO BE SOLVED: To provide a method for detecting a defect of a steel material, which correctly recognizes the defect on a surface of the steel material, for example, a so-called dross flaw caused during hot dip galvanizing without being affected by temperature irregularity caused during heating of the steel material.SOLUTION: A defect-free part is previously heated and a surface temperature of material is acquired as thermal image data by using an infrared thermography camera, so that a Laplacian standard deviation of the surface temperature is determined as a function of the surface temperature of a steel material. The steel material to be inspected is heated and the surface temperature of the material is acquired as the thermal image data by using the infrared thermography camera, so that Laplacian of the surface temperature is calculated. The Laplacian is corrected by the Laplacian standard deviation corresponding to the surface temperature, and the existence of a defect in the vicinity of a surface of the material to be inspected is evaluated on the basis of the corrected Laplacian.
    • 要解决的问题:提供一种用于检测正确识别钢材表面缺陷的钢材缺陷的方法,例如在热镀锌期间引起的所谓的浮渣缺陷,而不是 受钢材加热期间温度不均匀的影响。

      解决方案:预先加热无缺陷部分,并通过使用红外热像仪获取材料的表面温度作为热像数据,以便确定表面温度的拉普拉斯标准偏差作为表面的函数 钢材的温度。 加热待检查的钢材,并通过使用红外热像仪获取材料的表面温度作为热图像数据,从而计算表面温度的拉普拉斯算子。 拉普拉斯算子通过对应于表面温度的拉普拉斯标准差进行校正,并且基于校正的拉普拉斯算子来评估待检查材料表面附近的缺陷的存在。 版权所有(C)2013,JPO&INPIT

    • 2. 发明专利
    • Method, device, and program for evaluating nox generation amount in sintering process of iron and steel industry
    • 钢铁工业烧结过程中评价氮氧化物产生量的方法,装置和方案
    • JP2011256405A
    • 2011-12-22
    • JP2010129075
    • 2010-06-04
    • Nippon Steel Corp新日本製鐵株式会社
    • KOSUGI SATOSHINAKAGAWA JUNICHINAKANO MASANORIKATAYAMA KAZUAKI
    • C22B1/16F27B21/14
    • PROBLEM TO BE SOLVED: To clarify the control factor of fuel NOgeneration on an expression, and to overview-study a factor for suppressing an NOgeneration amount from the viewpoint of combustion.SOLUTION: A sintered layer temperature and a CO concentration and an Oconcentration in combustion exhaust gas are calculated based on a combustion model including the material balance of O, CO, CO, C, and CaCOin at least a sintered layer 101, the heat balance of combustion gas, and the heat balance of the sintered layer 101 in combustion reaction including surface reaction 2C+O→2CO, C+CO→2CO and CaCO→CO+CaO of a powder coke particle, and gas reaction 2CO+O→2COin the sintered layer 101. Using, as input values, the calculated sintered layer temperature and CO concentration and Oconcentration in combustion exhaust gas, CO concentration and Oconcentration in a gas laminar film of the coke particle are calculated based on the combustion model, and the ratio CO/Ovalue of CO concentration to Oconcentration in the gas laminar film of the powder coke particle in a combustion process is determined.
    • 要解决的问题:为了阐明表达式上的燃料NO x 生成的控制因子,并概述研究抑制NO x 生成量。 解决方案:燃烧废气中的烧结层温度和CO浓度和O 2 浓度基于包括O 2 ,CO,C和CaCO 3 层101,燃烧气体的热平衡以及燃烧反应中的烧结层101的热平衡,包括表面反应2C + O 2CO,C + CO 2 →2CO和CaCO 3 →CO 2 和烧结层101中的气体反应2CO + O 2 2CO 2 。使用计算的烧结层 燃烧废气中的CO浓度,CO浓度和O 2 浓度,CO浓度和O 2 浓度 基于焦炭计算焦炭颗粒 粉末气体层状膜中CO浓度的比值CO / O 2 为O 2 浓度 确定燃烧过程中的焦炭颗粒。 版权所有(C)2012,JPO&INPIT
    • 3. 发明专利
    • Defect detection method and defect detection system for materials
    • 缺陷检测方法和材料缺陷检测系统
    • JP2011237383A
    • 2011-11-24
    • JP2010111255
    • 2010-05-13
    • Nippon Steel Corp新日本製鐵株式会社
    • NAKAGAWA JUNICHIKOSUGI SATOSHIITO TADAYUKINISHIYAMA TETSUODOKI MASAHIROTAKEUCHI TOMOYAITO KAZUFUMIYAMAMOTO MASAHIRO
    • G01N25/72G01J5/48
    • PROBLEM TO BE SOLVED: To allow accurate detection of surface defects and surface layer defects of a material even when the material such as a steel plate is being transported or moved.SOLUTION: When a thin steel plate is taken as an example of a material, a defect detection system for the steel plate, which is for detecting surface defect and surface layer defect 101 of a thin steel plate 100, comprises a heater 1 for heating the surface of the thin steel plate 100, a infrared thermography camera 2 for obtaining thermal image data of a surface region (inspection area S) during or after heating by the heater 1, and a detector 3 for determining a variation amount of emissivity Δε(x,y) from a surface temperature given by the thermal image data obtained by the infrared thermography camera 2 to detect presence/absence of a defect. In obtaining the thermal image data of the inspection area S by the infrared thermography camera 2, heat energy emitted from the heater 1 is prevented to enter the infrared thermography camera 2 because of its reflection and the like at the steel plate 100.
    • 要解决的问题:即使正在运输或移动诸如钢板的材料,也能准确地检测材料的表面缺陷和表面层缺陷。 解决方案:当以薄钢板作为材料的例子时,用于检测薄钢板100的表面缺陷和表面层缺陷101的用于钢板的缺陷检测系统包括加热器1 用于加热薄钢板100的表面的红外热成像照相机2,用于在加热器1加热期间或之后获得表面区域(检查区域S)的热图像数据的红外热像仪2和用于确定发光率变化量的检测器3 从由红外热像仪2获得的热图像数据给出的表面温度的Δε(x,y)来检测缺陷的存在/不存在。 在通过红外线摄影照相机2获得检查区域S的热图像数据时,由于其在钢板100上的反射等而防止从加热器1发射的热能进入红外热像仪2。 版权所有(C)2012,JPO&INPIT
    • 5. 发明专利
    • Method, apparatus and program for managing molten steel temperature
    • 管理钢铁温度的方法,装置和程序
    • JP2012057195A
    • 2012-03-22
    • JP2010199153
    • 2010-09-06
    • Kyushu UnivNippon Steel Corp国立大学法人九州大学新日本製鐵株式会社
    • NAKAGAWA JUNICHIKOSUGI SATOSHIHIRAMOTO YUJIITO TADAYUKIKONISHI SADANORITATEISHI SHOHEIKAWANO SHUICHIHIROSE KEI
    • C21C7/00B22D11/10B22D46/00
    • PROBLEM TO BE SOLVED: To estimate quantitatively the influencing factor of a molten steel temperature during a process of manufacturing a steel.SOLUTION: An apparatus 200 for managing the molten steel temperature determines a linear regression model that considers the molten steel temperature drop amount during predetermined steps of the process for manufacturing the steel as an objective variable and considers a plurality of on-stream factors of the predetermined steps as explanatory variables. The apparatus includes: an explanatory variable-eliminating unit 202 for eliminating the one of the explanatory variables each having a large correlation by determining how large the correlation of the explanatory valuables is by using the data of the explanatory variables; an optimum combination candidate-extracting unit 203 for extracting the combination of the explanatory variables having the smallest amount-of-information criterion (AIC) as an optimum combination candidate among the combinations of the explanatory variables selected in the explanatory variable-eliminating unit 202; and a linear regression model-determining unit 204 for determining the linear regression model by using a k-divided cross-validation with the optimum combination candidate extracted by the optimum combination candidate-extracting unit 203.
    • 待解决的问题:在钢的制造过程中,定量估计钢水温度的影响因素。 解决方案:用于管理钢水温度的装置200确定了在制造钢的工艺的预定步骤期间考虑钢水温度下降量的线性回归模型作为目标变量,并考虑了多个在线因素 作为说明变量的预定步骤。 该装置包括:解释变量消除单元202,用于通过使用解释变量的数据来确定说明贵重物品的相关性是多大的,以消除每个具有较大相关性的解释变量; 用于在解释变量消除单元202中选择的解释变量的组合中提取具有最小信息量标准(AIC)的解释变量的组合作为最佳组合候选的最佳组合候选提取单元203; 以及线性回归模型确定单元204,用于通过使用由最佳组合候选提取单元203提取的具有最佳组合候选的k分割交叉验证来确定线性回归模型。(C)2012年, JPO&INPIT
    • 6. 发明专利
    • Estimating method for in-mold condition in continuous casting, device, and program
    • 连续铸造,装置和程序的模具条件估算方法
    • JP2011245507A
    • 2011-12-08
    • JP2010120874
    • 2010-05-26
    • Nippon Steel Corp新日本製鐵株式会社
    • NAKAGAWA JUNICHIKOSUGI SATOSHIHIRAMOTO YUJITAKEUCHI TOMOYAITO KAZUFUMIYAMAMOTO MASAHIRO
    • B22D11/16B22D11/055B22D11/22B22D46/00
    • PROBLEM TO BE SOLVED: To simultaneously determine a heat transmission coefficient α between a mold and a solidified shell which is a main cause that governs the condition within the mold, and a heat transmission coefficient β between a molten steel and the solidified shell.SOLUTION: In continuous casting, there are heat conductors such as a solidified shell 2, a mold powder layer 3, and a mold 4 between a molten steel 1 and a cooling water for the mold. An estimating method for the condition in a mold estimates the condition in the mold by acquiring a heat transmission coefficient α between the solidified shell 2 and the mold 4 as well as a heat transmission coefficient β between the molten steel 1 and the solidified shell 2. Using a plurality of thermocouples 5 embedded in the mold 4, each of them deviated along molding direction, the thermal flux that passes the mold is acquired. The heat transmission coefficient α and the heat transmission coefficient β are simultaneously determined by using the thermal flux and an equation which contains the heat transmission coefficient α and the heat transmission coefficient β to represent a thermal flux that passes the mold.
    • 要解决的问题:同时确定作为控制模具内的状态的主要原因的模具和凝固壳体之间的热传递系数α以及钢水和凝固壳体之间的传热系数β 。 解决方案:在连续铸造中,存在诸如凝固壳2,模具粉末层3和在钢水1和模具冷却水之间的模具4的热导体。 模具中的状态的估计方法通过获取凝固壳体2和模具4之间的热传递系数α以及钢水1和凝固壳体2之间的传热系数β来估计模具中的状态。 使用嵌入在模具4中的多个热电偶5,其中的每一个沿模制方向偏离,获得通过模具的热通量。 通过使用热通量和包含传热系数α和传热系数β的方程来同时确定热传递系数α和传热系数β,以表示通过模具的热通量。 版权所有(C)2012,JPO&INPIT