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A speed-controlled cooling heat treatment furnace

A heat treatment furnace and furnace body technology, applied in the field of heat treatment, can solve problems such as failure to meet post-processing requirements, product performance changes, failure to meet alloy annealing process requirements, etc., and achieve the effect of facilitating maintenance and preventing performance.

Active Publication Date: 2020-09-04
西安圣泰金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the annealing process of LN10 permanent magnet alloy, there are strict requirements on the cooling speed. Too fast or too slow will cause changes in product performance, which cannot meet the requirements of post-processing.
The traditional heat treatment furnace does not have a cooling rate control system, which cannot meet the annealing process requirements of alloys such as LN10

Method used

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  • A speed-controlled cooling heat treatment furnace
  • A speed-controlled cooling heat treatment furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, the air cooling device is a blower 7 .

[0024] The furnace body 3 is provided with a protective frame 1 , and there is a gap between the protective frame 1 and the furnace body 3 .

[0025] In the gap left between the protective frame 1 and the furnace body 3, a heating resistance band 2 is provided.

[0026] The furnace body 3 runs through the wall of the furnace body 3 and the wall of the protection frame 1, and is provided with a thermocouple 10 extending into the furnace 9 in the protection frame 1, and the thermocouple 10 feeds back the temperature in the furnace 9 to the PLC controller 8.

[0027] When the present invention is in use, the alloy workpiece is put into the furnace 9, and the heating temperature, holding time and cooling speed are set on the PLC controller 8, and then the PLC controller 8 controls the heating resistance band 2 to start heating, and when the heating temperature is reached Enter the heat preservation, when ...

Embodiment 2

[0029] Such as figure 1 , 2 As shown, as a preferred embodiment of the above-mentioned embodiment, in this embodiment, the air cooling device includes a blower 7 and a cooling device 71, the blower 7 is electrically connected to the PLC controller 8, and it is connected to the cooling device 71 through a pipeline. The cooling device 71 communicates with the air inlet 5 through a pipe.

[0030] The cooling device 71 is composed of a water-cooled box 711 and a box body 712. A water-cooled box 711 is arranged in the box body 712. One end of the box body 712 communicates with the blower 7, and the other end communicates with the air inlet 5. Gas enters the box body through the blower 7. 712, after further cooling at the water cooling box 711, enter the air inlet 5.

[0031] The furnace body 3 is provided with a protective frame 1 , and there is a gap between the protective frame 1 and the furnace body 3 .

[0032] In the space left between the protective frame 1 and the furnace...

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Abstract

The invention discloses a heat treatment furnace for speed control cooling. The heat treatment furnace for speed control cooling comprises a furnace body (3) and a furnace cover (11); the furnace body(3) is connected with the furnace cover (11); an annular cavity structure is arranged in the furnace cover (11); the cavity structure forms a heat exchange area (4); the furnace cover (11) is provided with an intake port (5) and an exhaust port (6) communicating with the heat exchange area (4); the intake port (5) communicates with an air cooling device through a pipe; cold air is blown in by theair cooling device from the intake port (5), and is exhausted by the exhaust port (6) after passing through the heat exchange area (4); a thermocouple (10) extending into the furnace body (3) and penetrating through the wall of the furnace body (3) is arranged on the furnace body (3); and a heating resistance strip (2) is arranged on the inner wall of the furnace body (3). The heat treatment furnace for speed control cooling can adjust the intake quantity and the intake temperature to achieve the purpose of controlling the hearth internal cooling speed without changing the atmosphere in a hearth. The heat exchange area is positioned at the upper part of the hearth to facilitate maintenance.

Description

technical field [0001] The invention relates to the technical field of heat treatment, in particular to a speed-controlled cooling heat treatment furnace. Background technique [0002] In order to meet the performance requirements of different metal products, it must be processed and heat-treated to make it have a corresponding structure. According to different metal materials and different performance requirements, the specific high-temperature annealing temperature and subsequent cooling speed of the high-temperature annealing process are different. . [0003] For example, the magnetic properties of LN10 permanent magnet alloy after annealing depend largely on the cooling rate. In order to obtain the required magnetic properties, the alloy is cooled with the furnace at the annealing temperature at a cooling rate of 7°C / min. During the annealing process of LN10 permanent magnet alloy, there are strict requirements on the cooling rate. Too fast or too slow will cause change...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/00
CPCC21D9/0062
Inventor 王戈曹继敏贺峰罗乾伟张温馨
Owner 西安圣泰金属材料有限公司