一种用于金属料棒加热的感应加热线圈
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI QIANYAN GAOHE NEW MATERIALS TECHNOLOGY CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-07-17
AI Technical Summary
传统感应加热线圈多采用等间距螺旋结构或筒状结构，其磁场分布与涡流密度在轴向和径向上易形成梯度差异，会导致料棒受热不均，局部过热或冷区现象显著(温差达120-150℃)
[0016]1、采用圆锥形段+圆柱形段的复合形状结构，在进行金属料棒的加热时，上侧的圆柱形段提供基础加热，下侧的圆锥形螺旋半径逐渐缩小，集中磁场能量于金属料棒底端，促进熔融金属连续流动，有利于磁场聚焦，提高金属料棒底端涡流密度，确保熔池温度≥金属液相线温度，锥形磁场形成向下的电磁力分量，促进熔融金属向下侧的滴落口流动。
Smart Images
Figure CN224521218U_ABST
Abstract
Claims
1. An induction heating coil for heating a metal billet, characterized by: It is formed by spirally winding the wire (1) with varying pitch, and the pitch gradually decreases from the first end to the second end of the induction heating coil. The induction heating coil includes a conical segment (3) and a cylindrical segment (2) along the axial direction from the first end to the second end. The wire (1) in the conical segment (3) and the cylindrical segment (2) are connected as one unit. The radius of the conical segment (3) gradually decreases from the first end to the second end, and the radius of the cylindrical segment (2) is the same everywhere.
2. The induction heating coil for heating a metal bar according to claim 1, characterized in that: The turn spacing d = -k*L + d1, where k is 0.20~0.30mm / mm, L is the distance along the axial direction to the first end, and d1 is the maximum turn spacing at the first end.
3. Induction heating coil for heating of a metal bar according to claim 1 or 2, characterized in that: The maximum turn spacing d1 at the first end is 8~12mm; the minimum turn spacing d2 at the second end is 4~6mm.
4. The induction heating coil for heating a metal bar according to claim 1, wherein: The cross section of the conductor (1) passing through the axis of the induction heating coil is its cross section, and the dimension of the cross section of the conductor (1) along the axial direction of the induction heating coil is its thickness. The thickness of the conductor (1) gradually increases radially from the inside to the outside.
5. The induction heating coil for heating a metal bar according to claim 4, characterized in that: The inner thickness of the conductor (1) is 5mm, the outer thickness is 8mm, the side width near the first end is 3mm, and the side width near the second end is 5mm.
6. The induction heating coil for heating a metal bar according to claim 4, characterized in that: The cone angle θ of the conical segment (3) is 15°~30°.
7. The induction heating coil for heating a metal bar according to claim 1, wherein: The conductor (1) has a cooling channel (11) inside.
8. The induction heating coil for heating a metal billet according to claim 7, characterized in that: The conductor (1) is provided with a heat dissipation auxiliary cavity (12) and a cooling pipe located in the heat dissipation auxiliary cavity (12), and the inner cavity of the cooling pipe forms a cooling flow channel (11).
9. The induction heating coil for heating a metal billet according to claim 1, characterized in that: The material of the conductor (1) is CuCr1Zr alloy.