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Inducing heating device for thin steel strip coil and heat treatment process thereof

A technology of induction heating device and induction heating coil, which is applied in the field of heating device and its heat treatment process, can solve the problems of incapable of heat treatment of thin steel plate, inability of thin steel coil to eliminate residual internal stress of annealed products, and lack of heat treatment of thin steel coil, etc. Achieve the effects of saving energy and time, good brightness, simple and practical process

Inactive Publication Date: 2012-10-24
洛阳用功感应加热设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the technology of this invention is very advanced, it cannot perform heat treatment on thin steel plates, let alone eliminate the residual internal stress of annealed products on thin steel coils, and there is no precedent for heat treatment on thin steel coils

Method used

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  • Inducing heating device for thin steel strip coil and heat treatment process thereof
  • Inducing heating device for thin steel strip coil and heat treatment process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] As shown in the figure, an induction heating device for a thin steel strip coil is composed of: an induction heating device furnace shell 1, an induction heating coil 2, a high temperature resistant fiber insulation furnace lining 3, a quartz tube 4, a graphite furnace lining 5, and a graphite inner cavity 6 , a power supply device 7, a support 8, a base 9, a temperature measuring device 10, and a water-cooled cable device 11; a base 9 is provided below the furnace shell 1 of the induction heating device, and a support 8 is provided in the middle of the top of the base 9; a rectangular induction heating device is provided on the support 8 The heating coil 2 is in the furnace shell 1 of the induction heating device, and the induction heating coil 2 is provided with a high-temperature-resistant fiber insulation furnace lining 3 with a rectangular cross-section. Graphite furnace lining 5, a rectangular graphite inner chamber 6 is reserved in the middle of the graphite furna...

Embodiment 2

[0044] As shown in the figure, a heat treatment process of an induction heating device for a thin steel strip coil, the specific process steps are as follows: first, run the uncoiler 12 and the coiler 14 to make the uncoiler 12 and the coiler 14 work synchronously ; The thin steel strip coil is uncoiled by the uncoiler 12 to become a thin steel strip with a cross-sectional tension ≤ 1MPa, which is sent into the induction heating device;

[0045] At this time, the power supply device 7 of 750KW kilowatts, 5KHZ kilohertz-10KHZ kilohertz is used to supply power to the induction heating coil 2. After the induction heating coil 2 is connected to the power supply, the high temperature resistant fiber insulation furnace lining 3 with a thickness of 8 mm produces a magnetic field. The graphite furnace lining 5 generates a current of 30A-200A ampere, so that the graphite furnace lining 5 is evenly heated, and the heating temperature reaches 1050°C-1700°C; at the same time, the protectiv...

Embodiment 3

[0051] As shown in the figure, a heat treatment process of an induction heating device for a thin steel strip coil, the specific process steps are as follows: first, run the uncoiler 12 and the coiler 14 to make the uncoiler 12 and the coiler 14 work synchronously ; The thin steel strip coil is uncoiled by the uncoiler 12 to become a thin steel strip with a cross-sectional tension ≤ 1MPa, which is sent into the induction heating device;

[0052] At this time, use 750KW kilowatts, 5KHZ kilohertz power supply device 7 to supply power to the induction heating coil 2, when the induction heating coil 2 is connected to the power supply, a magnetic field is generated through the 8 mm thick high temperature resistant fiber insulation furnace lining 3, inside the graphite furnace lining 5 Generate a current of 30A ampere, so that the graphite furnace lining 5 is evenly heated, and the heating temperature reaches 1050°C; at the same time, a protective gas ammonia decomposition gas is int...

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Abstract

The invention relates to an inducing heating device for a thin steel strip coil and a heat treatment process of the inducing heating device. An expanding bright annealing device is used for carrying out tension-free annealing to the thin steel strip coil, and the residual stress of the annealed product is eliminated. In addition, the heating mode is changed, and the reliability of the annealing device is improved. The temperature uniformity of the thin steel strip coil product is controlled in the temperature range of 2 DEG C, the heat treatment efficiency and the product quality are improved significantly, and a large amount of energy and time is saved. The inducing heating device for the thin steel strip coil comprises a furnace shell, an inducing heating coil, a high-temperature resistant fiber isolation furnace lining, a quartz tube, a graphite lining, a graphite inner cavity, a power supply device, a bracket, a base, a temperature measuring device and a water-cooled cable device. The base is correspondingly arranged below the furnace shell of the inducing heating device. The bracket is arranged in the middle part above the base. The rectangular inducing heating coil on the bracket is arranged in the furnace shell of the inducing heating device and internally provided with the high-temperature resistant fiber isolation furnace lining with a rectangular section.

Description

technical field [0001] The invention relates to a heating device and a heat treatment process thereof, in particular to an induction heating device for a thin steel coil and a heat treatment process thereof. Background technique [0002] At present, as a widely used metal material, the coiled thin steel strip needs to be bright annealed before leaving the factory. Existing bright annealing devices are divided into two categories: one uses a bell-type bright annealing furnace to anneal the entire coil; the other uses an air-cushion bright annealing furnace to continuously anneal the coil after unwinding. [0003] The two annealing methods can basically meet the needs of users, but because of the difference in processing methods, the annealing quality of the products is also different: when using a bell-type annealing furnace for annealing treatment, the heating time is generally 3H hours to 6H hours, and the coil The temperature difference between the edge and the core is 20...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/42C21D9/54C21D1/26
CPCY02P10/25
Inventor 严加伦陈惠萍
Owner 洛阳用功感应加热设备有限公司
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