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公开(公告)号：US20100286945A1
公开(公告)日：2010-11-11
申请号：US12743901
申请日：2008-11-21
CPC分类号： H05B6/104 , H05B6/06 , H05B2213/07
摘要： A method is provided for estimating a temperature distribution history in the case of line-heating flat-plate steel by high frequency induction. The method of estimating the temperature distribution history includes a first step of measuring a history of temperature distribution that is generated when a test piece of sheet steel is spot-heated; a second step of analyzing an induction current distribution that is generated when the sheet steel is spot-heated; a third step of expressing the induction current distribution by an approximation equation of the initial induction current distribution at an initial temperature and temperature dependent correction factor of the initial induction current distribution, and identifying the initial induction current distribution and the temperature dependent correction factors based on the temperature distribution history and the induction current distribution; a fourth step of analyzing internal heat generation from the initial induction current distribution, the temperature dependent correction factor, and a temperature dependency of electrical resistivity of the sheet steel; and a fifth step of analyzing the temperature distribution history generated during the line heating by applying the internal heat generation to the sheet steel while the internal heat generation is being moved. According to the method, the temperature distribution history in the case where the flat-plate steel is line-heated by high frequency induction can be efficiently estimated at high precision.
摘要翻译： 提供了一种在通过高频感应线路加热平板钢的情况下估计温度分布历史的方法。 估计温度分布历史的方法包括：测量钢板试样点火加热时产生的温度分布历史的第一步骤; 分析当钢板点加热时产生的感应电流分布的第二步骤; 通过初始感应电流分布的初始温度和温度相关校正因子的初始感应电流分布的近似方程来表达感应电流分布的第三步骤，以及基于初始感应电流分布的初始感应电流分布和温度依赖校正因子 温度分布历史和感应电流分布; 从初始感应电流分布，温度依赖校正因子和钢板的电阻率的温度依赖性分析内部发热的第四步骤; 以及第五步骤，通过在内部发热移动期间对钢板进行内部发热来分析在线路加热期间产生的温度分布历程。 根据该方法，可以高精度地有效地估计在平板钢通过高频感应线路加热的情况下的温度分布历史。
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公开(公告)号：US09271336B2
公开(公告)日：2016-02-23
申请号：US12743901
申请日：2008-11-21
CPC分类号： H05B6/104 , H05B6/06 , H05B2213/07
摘要： A method is provided for estimating a temperature distribution history in the case of line-heating flat-plate steel by high frequency induction. The method of estimating the temperature distribution history includes a first step of measuring a history of temperature distribution that is generated when a test piece of sheet steel is spot-heated; a second step of analyzing an induction current distribution that is generated when the sheet steel is spot-heated; a third step of expressing the induction current distribution by an approximation equation of the initial induction current distribution at an initial temperature and temperature dependent correction factor of the initial induction current distribution, and identifying the initial induction current distribution and the temperature dependent correction factors based on the temperature distribution history and the induction current distribution; a fourth step of analyzing internal heat generation from the initial induction current distribution, the temperature dependent correction factor, and a temperature dependency of electrical resistivity of the sheet steel; and a fifth step of analyzing the temperature distribution history generated during the line heating by applying the internal heat generation to the sheet steel while the internal heat generation is being moved. According to the method, the temperature distribution history in the case where the flat-plate steel is line-heated by high frequency induction can be efficiently estimated at high precision.
摘要翻译： 提供了一种在通过高频感应线路加热平板钢的情况下估计温度分布历史的方法。 估计温度分布历史的方法包括：测量钢板试样点火加热时产生的温度分布历史的第一步骤; 分析当钢板点加热时产生的感应电流分布的第二步骤; 通过初始感应电流分布的初始温度和温度相关校正因子的初始感应电流分布的近似方程来表达感应电流分布的第三步骤，以及基于初始感应电流分布的初始感应电流分布和温度依赖校正因子 温度分布历史和感应电流分布; 从初始感应电流分布，温度依赖校正因子和钢板的电阻率的温度依赖性分析内部发热的第四步骤; 以及第五步骤，通过在内部发热移动期间对钢板进行内部发热来分析在线路加热期间产生的温度分布历程。 根据该方法，可以高精度地有效地估计在平板钢通过高频感应线路加热的情况下的温度分布历史。
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公开(公告)号：US06766268B2
公开(公告)日：2004-07-20
申请号：US10291768
申请日：2002-11-12
申请人： Morinobu Ishiyama , Jun Kobayashi
发明人： Morinobu Ishiyama , Jun Kobayashi
IPC分类号： G06F1900
CPC分类号： G06F17/5018 , G06F2217/80
摘要： A distribution of bending principal strains giving a target shape of a curved surface is obtained (Step S1), and a calculation grid is divided along the direction of the bending principal strains (Step S2). A database storing actual measurement values of relations between heating conditions and deformation amounts is prepared (Step S3). The directions of the bending principal strains are divided into the directions of the maximum and minimum bending principal strains (Step S4) for each calculation grid. Then, a heating condition for obtaining a bending strain satisfying the maximum bending principal strain is obtained by a heating line perpendicular to the direction of the maximum bending principal strain, and a membrane strain generated accompanying with heating in this case is obtained by referring to the database (Step S5). Membrane strains generating a deflection of the target shape of a curved surface are calculated in consideration of the distribution of the membrane strains obtained in Step S5, and a heating condition satisfying the membrane strains in the two principal axis directions is obtained (Step S6). Then, a heating procedure is determined (Step S7).
摘要翻译： 获得赋予曲面的目标形状的弯曲主应变的分布（步骤S1），沿弯曲主应变的方向划分计算网格（步骤S2）。 准备存储加热条件和变形量之间的关系的实际测量值的数据库（步骤S3）。 将弯曲主应变的方向划分为每个计算网格的最大和最小弯曲主应变的方向（步骤S4）。 然后，通过垂直于最大弯曲主应变方向的加热线获得满足最大弯曲主应变的弯曲应变的加热条件，并且在这种情况下通过加热产生的膜应变通过参考 数据库（步骤S5）。 考虑到在步骤S5中获得的膜应变的分布，计算产生曲面的目标形状的偏转的膜应变，得到满足两个主轴方向的膜应变的加热条件（步骤S6）。 然后，确定加热步骤（步骤S7）。
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