公开(公告)号：EP2523530A1

公开(公告)日：2012-11-14

申请号：EP11731815.4

申请日：2011-01-06

申请人： Sumitomo Metal Industries, Ltd.

发明人： OKADA Nobuhiro ,  TOMIZAWA Atsushi ,  SHIMADA Naoaki

IPC分类号： H05B6/36 ,  C21D1/42 ,  H05B6/10

CPC分类号： B21D7/162 ,  B21D7/165 ,  C21D1/42 ,  C21D9/08 ,  C21D9/085 ,  C21D11/00 ,  H05B6/104 ,  H05B6/36 ,  H05B6/44 ,  Y02P10/253

摘要： An induction heating coil is provided which can stably heat a steel tube which is being fed in its axial direction without rotating, the heating being uniform in the circumferential direction and in a narrow range in the axial direction. An induction heating coil 10 which surrounds in the circumferential direction the outer periphery of an elongated metal material 1 which is a member being heated has at least two 1-turn coils in the form of a first turn coil body 11 and a second turn coil body 12. The inner peripheral length Ln (the non-effective coil length) where the effective number of coil turns is less than the total number of coil turns when the coil is projected in the axial direction and the inner peripheral length L0 of the projected coil bodies (the inner coil length) satisfy Ln/L0

摘要翻译： 提供一种感应加热线圈，其可以稳定地加热沿其轴向方向进给的钢管而不旋转，加热在圆周方向上均匀且在轴向方向上的窄范围内。 一个感应加热线圈10，其沿圆周方向围绕作为被加热件的细长金属材料1的外围具有至少两个第一匝线圈体11和第二匝线圈本体形式的1匝线圈 线圈匝数的有效数量的线圈匝数在轴向上突出的线圈匝数和投射线圈的内周长L0的内周长Ln（非有效线圈长度） 主体（内线圈长度）满足Ln / L0 <0.05。 线圈体11和线圈主体12在其连接部分上具有绝缘部分11b和12b，并且绝缘部分存在于从线圈体的中心测量的中心角为5°-45°的位置上。