CN203034054U - Electric heating slow-cooling device with heat treatment function - Google Patents
Electric heating slow-cooling device with heat treatment function Download PDFInfo
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- CN203034054U CN203034054U CN 201320020764 CN201320020764U CN203034054U CN 203034054 U CN203034054 U CN 203034054U CN 201320020764 CN201320020764 CN 201320020764 CN 201320020764 U CN201320020764 U CN 201320020764U CN 203034054 U CN203034054 U CN 203034054U
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- thermal treatment
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Abstract
The utility model discloses an electric heating slow-cooling device with a heat treatment function. The electric heating slow-cooling device comprises a furnace body and a furnace cover, wherein the furnace body is formed by a furnace wall and a furnace bottom, the furnace cover is covered on the top of the furnace body, and a furnace wall heat preservation layer and an electric heating layer are sequentially arranged in a direction from the inner side of the furnace wall to the inner cavity of the furnace body. The electric heating slow-cooling device has the advantages of being reasonable in structural design, safe and convenient to operate, economic and practical and having a simple heat treatment function and a good heat preservation effect.
Description
Technical field
The utility model belongs to the metal heat treatmet field, and particularly a kind of electrically heated annealing device with thermal treatment function, this device can be used for steel and steel billet thermal treatment and slow cooling thereof to be handled.
Background technology
Iron and steel is material most widely used in the mechanical industry, and the microstructure of iron and steel complexity can be controlled by thermal treatment, so the thermal treatment of iron and steel is the main contents of metal heat treatmet.Some steel billet is before rolling, need carry out slow cooling handles, some present steel mills adopt burial pit to carry out the slow cooling of steel billet, and the burial pit floor space is big, and investment is big, inconvenient operation, poor stability, steel billet are in temperature-fall period, and cooling rate is unbalanced, regional area does not have cooling-down effect, and the slow cooling effect is undesirable.When particularly the north of china in winter in situ temperature was low, the special steel of producing was owing to sharply cool off, and interior tissue changes, and causes performance that variation has taken place, and also can produce internal fissure when serious.Steel in the burial pit are exposed to and cause steel surface oxidation and decarburization in the air easily simultaneously, and then have influenced the quality of steel.
Thermal treatment generally comprises heating, insulation and cooling three phases, and most burial pit has only insulation and refrigerating function.Though some adopts coal gas or combustion gas to heat, but Heating temperature can not be well held in the coal gas heating, and Heating temperature is very important technical parameters of thermal treatment process, variation of temperature directly influences the generation of tissue, and selecting and controlling Heating temperature is the subject matter that guarantees thermal treatment quality.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, and a kind of electrically heated annealing device with thermal treatment function is provided, its reasonable in design, and easy-to-operate has simple and easy thermal treatment function and economical and practical, high insulating effect.
To achieve these goals, the utility model is by the following technical solutions:
A kind of electrically heated annealing device with thermal treatment function comprises the body of heater that is made of furnace wall and furnace bottom, and the bell that is covered on described body of heater top, is disposed with furnace wall thermal insulation layer and electric heating layer from the interior cavity direction of the described body of heater of interior side direction of described furnace wall.
Described bell can be made by quality steel plate, and described body of heater can be made by shaped steel and quality steel plate welding combination.The inboard furnace wall thermal insulation layer that arranges in described furnace wall can be individual layer, such as being made by insulating cotton or refractory materials; But also can be multilayer, alternately arrange to form the multi-layer heat preserving layer such as the thermal insulation layer of being made by insulating cotton and refractory materials respectively.
The inboard electric heating layer that arranges in described furnace wall can be electrically heated steel plate layer or resistance wire layer.
As a kind of preferred implementation, at described furnace bottom the furnace bottom thermal insulation layer is set, and a plurality of electric heating layers that one or more heat-resisting concrete buttresses are set and kept apart respectively by described heat-resisting concrete buttress at this thermal insulation layer.Described heat-resisting concrete buttress is in order to isolating a plurality of electric heating layers, and can be used for supporting pending steel, and more preferably, the height of described heat-resisting concrete buttress is 35-45cm, can make pending steel be in vacant state like this, and it is more even to be heated.The thermal insulation layer that arranges on the described furnace bottom can be individual layer, such as being made by insulating cotton or refractory materials; But also can be multilayer, alternately arrange to form the multi-layer heat preserving layer such as the thermal insulation layer of being made by insulating cotton and refractory materials respectively.More preferably the thermal insulation layer that arranges on the thermal insulation layer that arranges on the furnace bottom and the furnace wall is identical, a plurality of electric heating layers on the described furnace bottom are identical with the electric heating layer of inboard, described furnace wall, be electrically heated steel plate layer or resistance wire layer, when the thickness of the electrically heated steel plate layer on the furnace bottom is 3-7cm, its Heating temperature of easier control and rate of heating.
As a kind of preferred implementation, described bell inside is provided with covers inner thermal insulating layer, and described bell is provided with one or more breather holes, and an end of described breather hole is communicated with described lid inner thermal insulating layer, the other end is communicated with described body of heater inner chamber, and the bell of this structure can prevent its distortion.Described bell can cover on described body of heater by action of gravity, can promote by elevator.More preferably, described lid inner thermal insulating layer is the insulating cotton layer.
As a kind of preferred implementation, the electric heating layer of inboard, described furnace wall is that electricity adds the steel plate layer, and described electrically heated steel plate layer can accurately be controlled temperature in the stove by electrically heated, in order to more effective steel are heat-treated.More preferably, the thickness of described electrically heated steel plate layer is 3-7cm, the too thick or too thin control that all is unfavorable for Heating temperature and rate of heating of steel plate.
As a kind of preferred implementation, the upper limb of the inboard electrically heated steel plate layer that arranges in described furnace wall and the distance of described bell are 25-35cm, and the distance of lower rim and described furnace bottom is 25-35cm.Keep above-mentioned distance can guarantee suitable furnace inner space and avoid distance too near and cause the bell scaling loss.
As a kind of preferred implementation, the electric heating layer of described furnace wall that arrange on the described furnace bottom and close and the distance of described furnace wall are 13-17cm.Keep this distance can guarantee suitable furnace inner space and avoid distance too near and cause the furnace wall scaling loss.
As a kind of preferred implementation, described furnace wall thermal insulation layer is double insulation, is respectively insulating cotton layer and refractory masses.More preferably, the inner chamber of the more close described body of heater of described refractory masses, sidewall of the furnace body adopts the double-layer heat insulation material, and high insulating effect can prevent better that steel billet from sharply cooling phenomenon taking place.Simultaneously, described furnace bottom thermal insulation layer is refractory masses.
Above preferred implementation can merge arbitrarily or make up.
From technique scheme as can be seen, the beneficial effects of the utility model are:
The utility model reasonable in design, compare with imitative car type furnace or bell jar stove, cost is low, and floor space is little, easy to operate, long service life adopts electrically heated simultaneously but not Heating temperature and speed of cooling have effectively been controlled in the combustion type heating, make the interior temperature of burial pit more even, guarantee the quality of steel billet finished product effectively, improved the performance of enterprises, and reduced the pollution that causes because of the heating of combustion gas or coal gas.
Description of drawings
Fig. 1 is the front view that the utlity model has the electrically heated annealing device of thermal treatment function;
Fig. 2 is the furnace bottom electrically heated steel plate distribution plan that the utlity model has the electrically heated annealing device of thermal treatment function;
Fig. 3 is the layout drawing of furnace wall heating steel plate that the utlity model has the electrically heated annealing device of thermal treatment function.
Wherein, description of reference numerals is as follows: 1, bell; 2, insulating cotton; 3, body of heater; 4, first thermal insulation layer; 5, second thermal insulation layer; 61, the electrically heated steel plate on the furnace wall; 62, the electrically heated steel plate of furnace bottom; 7, breather hole; 8, concrete buttress; 9, furnace bottom thermal insulation layer; 10, electric wire.
Embodiment
Below by embodiment the utility model is elaborated.
A kind of electrically heated annealing device with thermal treatment function, as shown in Figure 1, it is long 7 meters, wide 4 meters, just to the illustrating of the utility model device, its specification can suitably be adjusted according to actual service condition for the electrically heated slow-cooling pit-type furnace of high 3 meters specifications, the device of above-mentioned specification, comprise body of heater 3 and the bell 1 of being located at body of heater 3 tops, wherein:
Bell 1 inside is provided with insulating cotton 2, and bell 1 is provided with two breather holes 7, and the one end is communicated with insulating cotton 2 in the bell 1, and the other end is communicated with body of heater 3 inner chambers, and breather hole 7 can prevent that bell 1 is out of shape.
Body of heater 3 comprises furnace wall and furnace bottom, wherein:
On the furnace wall, interior cavity direction from the interior side direction body of heater of furnace wall is disposed with first thermal insulation layer 4, second thermal insulation layer 5 and the electric heating layer, wherein, first thermal insulation layer 4 adopts insulating cotton to make, second thermal insulation layer 5 adopts refractory materials to make, electric heating layer on the furnace wall is electrically heated steel plate 61, is used for temperature in the control stove.In this embodiment, the thickness of the electrically heated steel plate 61 on this furnace wall is 5cm, and the distance of upper limb and bell is 30cm, and the distance of lower rim and furnace bottom is 30cm.Electrically heated steel plate 61 on this furnace wall is realized electrically heated effect by the electric wire of being located on its base 10, referring to Fig. 3.
On furnace bottom, be provided with furnace bottom thermal insulation layer 9, identical with the structure of second thermal insulation layer 5 on the furnace wall, made by refractory materials, and be provided with three microscler fire-resistant concrete buttresses 8 at this thermal insulation layer 9, it is 40cm highly, and referring to Fig. 1, these three concrete buttresses 8 have been divided into four zones with the thermal insulation layer 9 of furnace bottom, referring to Fig. 2, be respectively arranged with 62, three concrete buttresses 8 of four electrically heated steel plates in four zones the electrically heated steel plate 62 of four furnace bottoms is kept apart, and pending steel can be positioned on the concrete buttress 8.The distance of closing on the furnace wall with it near two steel plates of furnace wall in the electrically heated steel plate 62 of four furnace bottoms is 15cm.The electrically heated steel plate 62 of this furnace bottom is realized electrically heated effect by the electric wire 10 of being located at its limit portion, referring to Fig. 2.
The annealing device of present embodiment adopts the double-layer heat insulation material, and high insulating effect makes steel billet slowly cool off, and can control temperature by the electrically heated steel plate, has improved the final product quality of steel billet, provides the equipment basis for producing high-quality steel.
The use of above-mentioned annealing device is carried out according to following operation steps:
(1) behind the cleaning furnace inner space, closes bell;
(2) energising with electrically heated steel plate pre-heating temperature elevation to target temperature (can omit this step when not needing thermal treatment to be directly used in slow cooling);
(3) open bell, pending steel are hung in;
(4) suitable temp to be down to is opened bell, hangs out steel, closes bell.
Should be appreciated that above-described embodiment only is used for explanation the utility model but not is intended to limit protection domain of the present utility model.In addition; also should understand; after having read technology contents of the present utility model, those skilled in the art can make various changes, modification and/or modification to the utility model, and these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.
Claims (10)
1. electrically heated annealing device with thermal treatment function, comprise the body of heater that is constituted by furnace wall and furnace bottom, and the bell that is covered on described body of heater top, it is characterized in that, be disposed with furnace wall thermal insulation layer and electric heating layer from the interior cavity direction of the described body of heater of interior side direction of described furnace wall.
2. the electrically heated annealing device with thermal treatment function according to claim 1, it is characterized in that, described furnace bottom is provided with the furnace bottom thermal insulation layer, and this furnace bottom thermal insulation layer a plurality of electric heating layers of being provided with one or more heat-resisting concrete buttresses and being kept apart respectively by described heat-resisting concrete buttress.
3. the electrically heated annealing device with thermal treatment function according to claim 1, it is characterized in that, described bell inside is provided with covers inner thermal insulating layer, described bell is provided with one or more breather holes, one end of described breather hole is communicated with described lid inner thermal insulating layer, and the other end is communicated with described body of heater inner chamber.
4. the electrically heated annealing device with thermal treatment function according to claim 3 is characterized in that, described lid inner thermal insulating layer is the insulating cotton layer.
5. the electrically heated annealing device with thermal treatment function according to claim 1 and 2 is characterized in that, described electric heating layer is electrically heated steel plate layer or resistance wire layer.
6. the electrically heated annealing device with thermal treatment function according to claim 5 is characterized in that, the thickness of described electrically heated steel plate layer is 3-7cm.
7. the electrically heated annealing device with thermal treatment function according to claim 5, it is characterized in that, the upper limb of the inboard electrically heated steel plate layer that arranges in described furnace wall and the distance of described bell are 25-35cm, and the distance of lower rim and described furnace bottom is 25-35cm.
8. the electrically heated annealing device with thermal treatment function according to claim 5 is characterized in that, the electrically heated steel plate layer of described furnace wall that arrange on the described furnace bottom and close and the distance of described furnace wall are 13-17cm.
9. according to claim 2 or 8 described electrically heated annealing devices with thermal treatment function, it is characterized in that the height of described heat-resisting concrete buttress is 35-45cm.
10. the electrically heated annealing device with thermal treatment function according to claim 2 is characterized in that, described furnace wall thermal insulation layer is double insulation, is respectively insulating cotton layer and refractory masses from the interior cavity direction of the described body of heater of interior side direction of described furnace wall; Described furnace bottom thermal insulation layer is refractory masses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020764 CN203034054U (en) | 2013-01-15 | 2013-01-15 | Electric heating slow-cooling device with heat treatment function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020764 CN203034054U (en) | 2013-01-15 | 2013-01-15 | Electric heating slow-cooling device with heat treatment function |
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| CN203034054U true CN203034054U (en) | 2013-07-03 |
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| CN 201320020764 Expired - Fee Related CN203034054U (en) | 2013-01-15 | 2013-01-15 | Electric heating slow-cooling device with heat treatment function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014273A (en) * | 2013-01-15 | 2013-04-03 | 莱芜钢铁集团有限公司 | Electric heating and slow-cooling device with heat treatment function |
| WO2019196416A1 (en) * | 2018-04-12 | 2019-10-17 | 邢献军 | High-efficiency clean excess enthalpy combustion apparatus and furnace body applied thereby |
-
2013
- 2013-01-15 CN CN 201320020764 patent/CN203034054U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014273A (en) * | 2013-01-15 | 2013-04-03 | 莱芜钢铁集团有限公司 | Electric heating and slow-cooling device with heat treatment function |
| CN103014273B (en) * | 2013-01-15 | 2016-03-02 | 莱芜钢铁集团有限公司 | There is the electrically heated annealing device of thermal treatment function |
| WO2019196416A1 (en) * | 2018-04-12 | 2019-10-17 | 邢献军 | High-efficiency clean excess enthalpy combustion apparatus and furnace body applied thereby |
| GB2587528A (en) * | 2018-04-12 | 2021-03-31 | Advanced Energy Tech And Equipment | High-efficiency clean excess enthalpy combustion apparatus and furnace body applied thereby |
| GB2587528B (en) * | 2018-04-12 | 2022-05-04 | Advanced Energy Tech And Equipment | Efficient and clean excess enthalpy combustion device |
| US11473778B2 (en) | 2018-04-12 | 2022-10-18 | Xianjun XING | High-efficiency clean excess enthalpy combustion device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20170115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |