A slab electromagnetic induction heater
By using a combination of C-shaped and arc-shaped heaters in the slab continuous casting process, the problem of uneven temperature during slab straightening was solved, uniform heating of the slab was achieved, cracks were avoided, and the quality and machinability of the cast slab were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN KEMEIDA ELECTRIC
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-07
AI Technical Summary
During the continuous casting of slabs, the slabs generate enormous stress during straightening, which leads to excessively low local temperatures at both ends of the slab, resulting in surface cracks and corner cracks, affecting the quality and machinability of the cast slabs.
C-shaped and arc-shaped heaters are symmetrically arranged on both sides of the slab and controlled by independent heating power supplies to achieve uniform heating of the slab edges and surface. The combination of C-shaped and arc-shaped heaters improves the uniformity of the temperature field.
This effectively avoids cracks at the edges and corners of the slab, improving the quality and machinability of the cast billet.
Smart Images
Figure CN224473447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of slab continuous casting process, and more specifically, to a slab electromagnetic induction heater. Background Technology
[0002] Currently, induction heating is widely used in slab continuous casting. For example, it is a common temperature control method used in various stages of the process for heating molten steel in the tundish, heating molten steel in the crystallizer, and reheating the cast slab.
[0003] In the continuous casting process, huge stress is generated when the slab is straightened. If the local temperature at both ends of the slab is too low, the stress will be further concentrated, resulting in some surface cracks and corner cracks, which will affect the surface quality and processing performance of the slab. Utility Model Content
[0004] In view of the above-mentioned technical problems in related technologies, this utility model provides a slab electromagnetic induction heater, which can solve the above problems.
[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:
[0006] An electromagnetic induction heater for slabs includes a heating assembly disposed between sector A and sector B of a continuous casting machine. The heating assembly includes two C-shaped heaters and two arc-shaped heaters arranged sequentially along the billet discharge direction. The two C-shaped heaters are symmetrically arranged on the left and right sides of the slab, with the left and right ends of the slab extending into the C-shaped grooves of the C-shaped heaters. The two arc-shaped heaters are also two in number and are elongated arc-shaped structures. The two arc-shaped heaters are designated as Arc Heater One and Arc Heater Two, symmetrically arranged on the left and right sides of the slab. The right side of Arc Heater One faces the left side of the slab, and the left side of Arc Heater Two faces the right side of the slab. The arc-shaped heater is an electromagnetic induction heater one used for heating the side of the slab, and the C-shaped heater is an electromagnetic induction heater two used for heating the upper and lower parts of the slab.
[0007] Furthermore, the C-shaped heater and the arc-shaped heater are each controlled by an independent heating power supply.
[0008] The beneficial effects of this utility model are as follows: This application uses C-shaped heaters and arc-shaped heaters to heat the edges and surfaces of the slab, making the temperature field more uniform and avoiding problems such as edge cracks and corner cracks, thereby improving the quality and processing performance of the cast billet. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0010] The present invention will now be described in further detail with reference to the accompanying drawings.
[0011] Figure 1 This is a schematic diagram of the structure of a slab electromagnetic induction heater according to an embodiment of the present utility model;
[0012] Figure 2 This is a schematic diagram showing the positional structure of the C-shaped heater, the arc heater, and the slab as described in an embodiment of this utility model.
[0013] In the picture:
[0014] 1. Continuous casting machine sector section A; 2. Continuous casting machine sector section B; 3. Heating assembly; 31. C-shaped heater; 32. Arc heater; 4. Slab. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0016] like Figure 1-2 As shown, this utility model discloses a slab electromagnetic induction heater, including a heating assembly 3 disposed between a sector section A1 and a sector section B2 of a continuous casting machine. The heating assembly 3 includes two C-shaped heaters 31 and two arc-shaped heaters 32 arranged sequentially along the billet discharge direction. The two C-shaped heaters 31 are symmetrically arranged on the left and right sides of the slab 4, with the left and right ends of the slab 4 extending into the C-shaped grooves of the C-shaped heaters 31. The number of arc-shaped heaters 32 is also two. It has a long, arc-shaped structure. The two arc-shaped heaters 32 are arc-shaped heater one and arc-shaped heater two, which are symmetrically arranged on the left and right sides of the slab 4. The right side of arc-shaped heater one is opposite to the left side of the slab 4, and the left side of arc-shaped heater two is opposite to the right side of the slab 4. Arc-shaped heater 32 is an electromagnetic induction heater one used to heat the side of the slab, and C-shaped heater 31 is an electromagnetic induction heater two used to heat the top and bottom of the slab.
[0017] Example:
[0018] The C-shaped heater 31 and the arc-shaped heater 32 described in this application are each controlled by an independent heating power supply.
[0019] In practical use, the target heating temperature of the slab 4 is defined as T0. The real-time temperature T1 of the slab 4 is detected at the front end of the heating component 3. The output power of the heating component 3 is set according to the temperature difference T=T0-T1. When the slab 4 moves at a certain speed, the heating component 3 heats the slab 4 in real time.
[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A slab electromagnetic induction heater, characterized in that, The system includes a heating assembly (3) located between sector A (1) and sector B (2) of the continuous casting machine. The heating assembly (3) includes C-shaped heaters (31) and arc-shaped heaters (32) arranged sequentially along the billet discharge direction. There are two C-shaped heaters (31) with a C-shaped structure. The two C-shaped heaters (31) are symmetrically arranged on the left and right sides of the slab (4). The left and right ends of the slab (4) extend into the C-shaped grooves of the C-shaped heaters (31). There are two arc-shaped heaters (32) with long arc shapes. The structure includes two arc-shaped heaters (32), namely arc-shaped heater one and arc-shaped heater two. Arc-shaped heater one and arc-shaped heater two are symmetrically arranged on the left and right sides of the slab (4). The right side of arc-shaped heater one is opposite to the left side of the slab (4), and the left side of arc-shaped heater two is opposite to the right side of the slab (4). Arc-shaped heater (32) is an electromagnetic induction heater one used to heat the side of the slab, and C-shaped heater (31) is an electromagnetic induction heater two used to heat the upper and lower parts of the slab.
2. The slab electromagnetic induction heater according to claim 1, characterized in that, The C-shaped heater (31) and the arc-shaped heater (32) are each controlled by an independent heating power supply.