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    • 8. 发明申请
    • STEEL PIPE MATERIAL WELD ZONE HEATING APPARATUS AND METHOD
    • 钢管材料焊接加热装置及方法
    • US20100258535A1
    • 2010-10-14
    • US12734442
    • 2008-10-22
    • Kazuhiko FukutaniKenji UmetsuYoshiaki NakamuraKazuto YamamotoTakashi MiyakawaRyuichi ShimadaTadayuki KitaharaTakanori Isobe
    • Kazuhiko FukutaniKenji UmetsuYoshiaki NakamuraKazuto YamamotoTakashi MiyakawaRyuichi ShimadaTadayuki KitaharaTakanori Isobe
    • B23K11/24B23K11/00F16L9/00
    • B23K13/025B23K13/08B23K2101/06B23K2103/04
    • This invention provides a steel pipe material weld zone heating method and apparatus for melting and welding the weld zone of a steel pipe material that during continuous induction heating and welding of moving steel pipe material as the material being heated controls temperature distribution and molten steel shape and weld frequency fluctuation with high accuracy and high efficiency, irrespective of the shape of the heated region of material being heated or the material properties of the material being heated, which comprises a first imaging step in which first imaging means 3 installed opposite an end face weld zone of the steel pipe material is used to detect self-emitted light of the weld zone and output a brightness image, a weld zone temperature distribution computation step in which image processing is performed based on the brightness image and emitted light temperature measurement is applied to compute the plate-thickness direction temperature distribution of the weld zone, a heating control step in which a criterion defined in advance for the relationship between alternating current frequency and plate-thickness direction temperature distribution is used to determine the frequency of the alternating current based on the plate-thickness direction temperature distribution, and a step in which the variable frequency alternating current power supply 1 is used to pass through the steel pipe material 10 alternating current of the frequency determined in the heating control step.
    • 本发明提供了一种钢管材料焊接区加热方法和装置,用于熔化和焊接钢管材料的焊接区,在加热材料的连续感应加热和焊接期间,作为加热材料控制温度分布和钢水形状, 焊接频率波动具有高精度和高效率,而不管被加热材料的加热区域的形状或被加热材料的材料性质如何,其包括第一成像步骤,其中第一成像装置3安装成与端面焊接相对 钢管材料的区域用于检测焊接区域的自发射光并输出亮度图像,焊接区域温度分布计算步骤,其中基于亮度图像执行图像处理,并且发射的光温度测量被应用于 计算焊接区域的板厚方向温度分布,a 加热控制步骤,其中使用针对交变频率和板厚方向温度分布之间的关系预先定义的标准来基于板厚度方向温度分布来确定交流电流的频率,并且其中 变频交流电源1用于通过钢管材料10在加热控制步骤中确定的频率的交流电流。