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High-strength steel gradient induction heating device

An induction heating device, high-strength steel technology, applied in the direction of improving energy efficiency and process efficiency, can solve problems such as uncontrollability, large temperature error, unevenness, etc., to achieve uniform temperature gradient, uniform heating temperature gradient, no Effects of air pollution

Inactive Publication Date: 2017-10-20
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention designs and develops a gradient induction heating device for high-strength steel, aiming to solve the problems of large temperature error, uncontrollability, and unevenness in the induction heating method existing in the prior art when realizing gradient heating of parts

Method used

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  • High-strength steel gradient induction heating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Example 1: Commonly used gradient induction heating conditions for parts

[0059] Take the gradient induction heating of a cuboid thin-walled metal part with a length of 300mm, a section size of 80mm×80mm, and a thickness of 8mm as an example:

[0060] 1. Presetting work: turn on the power, adjust the frequency conversion device 11, so that the maximum temperature that can be heated is 1000°C, and then set the expected maximum heating temperature to 950°C in the temperature gradient control panel 12, input the length of the part 300mm, and the temperature The gradient is 150°C, the temperature gradient control device records data and calculates the stop position of the transmission device, and the preset work is completed;

[0061] 2. Fix the parts on the part fixing device 7 of the feed inlet, open the furnace door 6 by using the furnace door telescopic device 4, start the transmission device, the transmission device will stop automatically at the preset position, at t...

Embodiment 2

[0066] Example 2: Special working conditions for gradient induction heating of parts

[0067] 1. Adjustment of temperature:

[0068] Take the gradient induction heating of a cuboid thin-walled metal part with a length of 300mm, a section size of 80mm×80mm, and a thickness of 8mm as an example:

[0069] (1) When the maximum heating temperature required by the parts rises from 950°C in Embodiment 1 to 1100°C, the frequency of the alternating current through the coil can be increased by adjusting the frequency conversion device 11 during the preset work, thereby increasing the generated alternating current. Change the magnetic field strength, increase the eddy current effect, and increase the maximum temperature that the parts can be heated, so that the maximum heating temperature can reach 1200 °C. Then through the adjustment of the temperature gradient control panel 12, the maximum temperature of the parts heated is 1100°C. (It can be realized by adjusting the frequency conve...

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Abstract

The invention discloses a gradient induction heating device for high-strength steel. The gradient induction heating device for high-strength steel comprises a heating chamber, a conveyor belt, an induction heating coil, a frequency conversion device and a control device, wherein the heating chamber is provided with a feed inlet for conveying parts; the conveyor belt penetrates through the heating chamber via the feed inlet to reach the outside, and used for conveying the parts to be heated in the heating chamber; the induction heating coil is of a taper structure with the inner diameter gradually increasing; the conveyor belt can pass through in the center axis direction of the induction heating coil; the frequency conversion device is electrically connected with the induction heating coil and used for changing the power-on frequency of the induction heating coil; and the control device is electrically connected with the conveyor belt and used for controlling the stop locations of the parts. The gradient induction heating device for high-strength steel has the characteristics that errors are small, temperature can be controlled, and the heating temperature gradient is uniform.

Description

technical field [0001] The invention relates to the field of high-strength steel preparation, in particular to a gradient induction heating device for high-strength steel. Background technique [0002] With the emergence of energy crisis and environmental problems, automobile lightweight has become the focus of attention. At present, there are two main ways to realize the lightweight of automobiles: one is structural lightweight, that is, the use of finite element method and optimization design method for structural optimization design, improving the structure of parts and reducing the number of parts; Lightweight materials are used in manufacturing, such as: high-strength steel, aluminum, magnesium alloys, plastics and composite materials. How to ensure the safety of automobile collision while realizing lightweight has become the key to the problem. [0003] Automobile collision safety refers to the safety design of the vehicle structure and occupant protection system to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/42
CPCC21D1/42Y02P10/25
Inventor 庄蔚敏秦龙解东旋胡哲
Owner JILIN UNIV
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