CN113584269A - Energy-saving annealing furnace for carbon steel forging heat treatment and operation method thereof - Google Patents
Energy-saving annealing furnace for carbon steel forging heat treatment and operation method thereof Download PDFInfo
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- CN113584269A CN113584269A CN202110858737.7A CN202110858737A CN113584269A CN 113584269 A CN113584269 A CN 113584269A CN 202110858737 A CN202110858737 A CN 202110858737A CN 113584269 A CN113584269 A CN 113584269A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
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- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention relates to the technical field of carbon steel heat treatment, and discloses an energy-saving annealing furnace for carbon steel forging heat treatment and an operation method thereof. According to the invention, through the designed inclined partition layer, two annealing inner cavities with right-angled trapezoid cross sections are formed in the annealing furnace, so that hot air is always introduced into the inner cavities from a smaller inlet, and the space of the inner cavities is gradually enlarged, so that the hot air is automatically and uniformly diffused, the air speed is reduced, the heat exchange time of the hot air on materials is prolonged, and the annealing efficiency is increased.
Description
Technical Field
The invention relates to the technical field of carbon steel heat treatment, in particular to an energy-saving annealing furnace for carbon steel forging heat treatment and an operation method thereof.
Background
The annealing furnace is a common heat treatment device, and achieves the purpose of annealing materials by heating air and uniformly heating the materials to be treated in the furnace by utilizing a circulating fan.
However, in the existing annealing furnace for carbon steel forging heat treatment, the method of using a circulating fan to make the heat in an inner cavity uniform is not good in effect due to the influence of the shape of an annealing material, the temperature of one side, close to a heating source, of carbon steel is often high, the temperature of the center part of the carbon steel is often low, so that the annealing effect caused by nonuniform heating of the carbon steel is locally different, crystals locally generated by the carbon steel are not in a standard state, an appliance for containing the carbon steel is in contact with the bottom surface of the carbon steel, the heat treatment effect of the bottom surface of the carbon steel is not good, meanwhile, only one whole carbon steel can be placed into the annealing furnace at one time, gaps among the carbon steels are insufficient due to space compression due to the fact that too much carbon steel is placed into the annealing furnace, the annealing treatment of the carbon steel is influenced, and the production efficiency is seriously influenced.
Disclosure of Invention
Aiming at the defects of the existing annealing furnace in the use process in the background technology, the invention provides the energy-saving annealing furnace for carbon steel forging heat treatment and the operation method thereof, which have the advantages of uniform heating of the annealing material in the annealing furnace, long heat exchange time between hot air and the material and capability of carrying out multi-material annealing in one-time operation, and solve the technical problems in the background technology.
The invention provides the following technical scheme: an energy-saving annealing furnace for carbon steel forging heat treatment comprises an annealing furnace body which is divided into a heat preservation layer, a heating layer and an inner cavity from outside to inside, one side of the annealing furnace body is fixedly connected with an air inlet pipe which penetrates through the heat-insulating layer to the heating layer, a circulating fan is fixedly connected in the air inlet pipe, the inner cavity is divided into a first inner cavity and a second inner cavity, an inclined partition layer is arranged between the first inner cavity and the second inner cavity, the first inner cavity and the second inner cavity are both provided with clamping grooves which are uniformly distributed, the top ends of the clamping grooves are fixedly connected with arc-shaped wind-collecting plates, the front end and the rear end of the furnace body of the annealing furnace are respectively clamped with a front furnace cover and a rear furnace cover, an air outlet cavity is arranged in the front furnace cover, the utility model discloses a stove cover, including back bell, zone of heating, air-out chamber, transition intracavity, the bottom of preceding bell links firmly the play tuber pipe that runs through.
Preferably, the heating layer is communicated with the air outlet cavity.
Preferably, the first inner cavity and the second inner cavity have the same structure and opposite directions, the cross section of the first inner cavity is a right trapezoid, and the right-angled waist of the right trapezoid is parallel to the ground.
Preferably, the top of the rear furnace cover is provided with a first outlet which is communicated with the first inner cavity and the transition cavity, the bottom of the front furnace cover is provided with a second outlet which is communicated with the second inner cavity and the air outlet pipe.
Preferably, the first outlet and the second outlet are identical in structure, and the cross section of the first outlet is in an equilateral trapezoid shape.
Preferably, the shape of the arc wind gathering plate is arc, and the top end of the arc wind gathering plate is not fixedly connected with the bottom end of the upper clamping groove.
An operation method of an energy-saving annealing furnace for carbon steel forging heat treatment comprises the following operation steps:
s1, opening the front furnace cover and the rear furnace cover, placing the materials in the first inner cavity and the second inner cavity through the clamping grooves, and then closing the front furnace cover and the rear furnace cover;
s2, turning on the heater, turning on the circulating fan when the temperature of the heater reaches an annealing set value, sucking cold air into the heating layer, and introducing hot air into the first inner cavity through the air outlet cavity;
s3, automatically diffusing hot air in the first inner cavity, impacting the arc-shaped wind gathering plate, passing through the upper end and the lower end of the arc-shaped wind gathering plate after being compressed, and gathering the hot air at the first outlet to enter the transition cavity for secondary heating;
s4, introducing secondary heating air into the second inner cavity, repeating the action of S3, and introducing the air into an air outlet pipe from the second outlet to be discharged out of the furnace;
and S5, closing the heater after annealing, enabling the circulating fan to suck cold air to cool the material, and opening the front and rear furnace covers to cool the material outside the furnace after the temperature of the material is reduced to a temperature capable of cooling outside the furnace.
The invention has the following beneficial effects:
1. according to the invention, through the designed inclined partition layer, two annealing inner cavities with right-angled trapezoid cross sections are formed in the annealing furnace, so that hot air is always introduced into the inner cavities from a smaller inlet, and the space of the inner cavities is gradually enlarged, so that the hot air is automatically and uniformly diffused, the air speed is reduced, the heat exchange time of the hot air on materials is prolonged, and the annealing efficiency is increased.
2. The invention can place more materials in one-time operation in the annealing cavity through the designed clamping groove, and avoids the condition of incomplete annealing of the contact part caused by the contact of the tray and the materials.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a first lumen configuration of the present invention;
FIG. 3 is a schematic view of the structure of the locking slot of the present invention;
FIG. 4 is a schematic view of an arc-shaped wind-gathering plate structure according to the present invention.
In the figure: 1. a furnace body of an annealing furnace; 2. a heat-insulating layer; 3. a heating layer; 4. an air inlet pipe; 5. a circulating fan; 6. a first lumen; 7. a second lumen; 8. an inclined partition layer; 9. a front furnace cover; 901. an outlet II; 10. a rear furnace cover; 101. an outlet I; 11. an air outlet cavity; 111. a transition chamber; 12. a heater; 13. a clamping groove; 14. an arc-shaped wind-gathering plate; 15. and an air outlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an energy-saving annealing furnace for carbon steel forging heat treatment comprises an annealing furnace body 1, the annealing furnace body 1 is divided into a heat insulation layer 2, a heating layer 3 and an inner cavity from outside to inside, one side of the annealing furnace body 1 is fixedly connected with an air inlet pipe 4 penetrating through the heat insulation layer 2 to the heating layer 3, the air inlet pipe 4 is fixedly connected with a circulating fan 5, the inner cavity is divided into a first inner cavity 6 and a second inner cavity 7, an inclined partition layer 8 is arranged between the first inner cavity 6 and the second inner cavity 7, clamping grooves 13 are uniformly distributed in the first inner cavity 6 and the second inner cavity 7, the top ends of the clamping grooves 13 are fixedly connected with arc-shaped air collecting plates 14, a front furnace cover 9 and a rear furnace cover 10 are respectively clamped at the front end and the rear end of the annealing furnace body 1, an air outlet cavity 11 is arranged in the front furnace cover 9, a transition cavity 111 is arranged in the rear furnace cover 10, and heaters 12 are fixedly connected in the heating layer 3, the air outlet cavity 11 and the transition cavity 111, the bottom of the front furnace cover 9 is fixedly connected with a through air outlet pipe 15.
Wherein, zone of heating 3 and play wind chamber 11 intercommunication make the air that accomplishes the heating in zone of heating 3 can pass through wind chamber 11 and accomplish annealing in getting into first inner chamber 6 from less one end opening earlier, then get into the transition chamber 111 from the great one end of first inner chamber 6 and accomplish in the second inner chamber 7 is got into to rethread second inner chamber 7 less one end after the secondary heating.
Wherein, first inner chamber 6 is the same with second inner chamber 7 structure, opposite direction, first inner chamber 6's cross section is right trapezoid, and right angle waist of right trapezoid is on a parallel with ground, first inner chamber 6 and second inner chamber 7's shape design, make hot-air always get into first inner chamber 6 and second inner chamber 7 from less one end, make hot-air receive the space variation of first inner chamber 6 and second inner chamber 7 and accomplish automatic even diffusion, slow down it simultaneously, make hot-air and material fully contact, improve annealing efficiency.
Wherein, export 101 has been seted up No. one at the top of back bell 10, export 101 communicates first inner chamber 6 and transition chamber 111, export 901 No. two has been seted up to the bottom of preceding bell 9, export 901 No. two communicates second inner chamber 7 and play tuber pipe 15, make the hot-air after accomplishing annealing heat transfer and cooling in the first inner chamber 6 can accomplish the secondary heating through export 101 entering transition chamber 111 in, make the hot-air reach annealing temperature again and then carry out annealing heat transfer in getting into second inner chamber 7, avoid hot-air temperature loss to lead to the condition that material annealing is not up to standard in the second inner chamber 7.
The first outlet 101 and the second outlet 901 are identical in structure, the cross section of the first outlet 101 is in an equilateral trapezoid shape, so that the decelerated hot air in the first inner cavity 6 enters the transition cavity 111 in an accelerating mode again under the influence of the structure after annealing heat exchange is completed, the air pressure of the hot air in the transition cavity 111 is increased, the initial speed of the hot air entering the second inner cavity 7 is increased, and the conditions that diffusion is slow and the annealing efficiency is reduced due to insufficient follow-up air pressure of the hot air in the second inner cavity and the hot air is accumulated in front of the arc-shaped air gathering plate 14 are avoided.
Wherein, the shape that the arc gathers aerofoil 14 is the arc, and the arc gathers aerofoil 14's top and does not link firmly with the bottom in top joint groove 13, makes hot-blast arc that passes through between the material gather aerofoil 14 when, receives the shape restriction that the arch gathered aerofoil 14, and the hot-blast of both sides assembles to the centre, makes the material be close to the temperature at central point and can improve, and hot-blast upper and lower both ends compression that can only follow the arc and gather aerofoil 14 simultaneously passes through, makes the heat that the relative two sides of material received increase, guarantees the efficiency of annealing.
An operation method of an energy-saving annealing furnace for carbon steel forging heat treatment comprises the following operation steps:
s1, opening the front furnace cover 9 and the rear furnace cover 10, placing materials in the first inner cavity 6 and the second inner cavity 7 through the clamping groove 13, and then closing the front furnace cover and the rear furnace cover;
s2, turning on the heater 12, turning on the circulating fan 5 when the temperature of the heater 12 reaches an annealing set value, sucking cold air into the heating layer 3, and introducing hot air into the first inner cavity 6 through the air outlet cavity 11;
s3, automatically diffusing the hot air in the first inner cavity 6, impacting the arc-shaped wind gathering plate 14, passing through the upper end and the lower end of the arc-shaped wind gathering plate 14 after being compressed, and gathering the hot air at the first outlet 101 to enter the transition cavity 111 for secondary heating;
s4, introducing secondary heating air into the second inner cavity 7, repeating the action of S3, and introducing the air into the air outlet pipe 15 from the second outlet 901 to be discharged out of the furnace;
and S5, after the annealing is finished, closing the heater 12, enabling the circulating fan 5 to suck cold air to cool the material, and opening the front and rear furnace covers to cool the material outside the furnace after the temperature of the material is reduced to a temperature capable of cooling outside the furnace.
The use method (working principle) of the invention is as follows:
firstly, opening a front furnace cover 9 and a rear furnace cover 10, placing materials in a first inner cavity 6 and a second inner cavity 7 through a clamping groove 13, then closing the front furnace cover and the rear furnace cover, then opening a heater 12 to heat air in a heating layer 3, opening a circulating fan 5 when the temperature of the heater 12 reaches an annealing set value, sucking cold air into the heating layer 3, introducing hot air into the first inner cavity 6 through an air outlet cavity 11, allowing the hot air to automatically diffuse due to space change in the first inner cavity 6, impacting an arc-shaped air collecting plate 14 among the materials, allowing a part of hot air to converge towards the middle, compressing and passing through the upper end and the lower end of the arc-shaped air collecting plate 14, converging the hot air at a first outlet 101, and allowing the hot air to enter a transition cavity 111 for secondary heating;
then, secondary heating air is introduced into the second cavity 7 from the small port, and is discharged out of the furnace from the second outlet 901 after the heating action in the first cavity 6 is repeated;
and finally, after the annealing is finished, closing the heater 12, enabling the circulating fan 5 to suck cold air to cool the material, and opening the front furnace cover and the rear furnace cover after the temperature of the material is reduced to the temperature capable of being cooled outside the furnace so as to cool the material outside the furnace.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a carbon steel forges energy-saving annealing stove for heat treatment, includes annealing stove furnace body (1), its characterized in that: the annealing furnace body (1) is divided into a heat preservation layer (2), a heating layer (3) and an inner cavity from outside to inside, one side of the annealing furnace body (1) is fixedly connected with an air inlet pipe (4) which penetrates through the heat preservation layer (2) to the heating layer (3), a circulating fan (5) is fixedly connected in the air inlet pipe (4), the inner cavity is divided into a first inner cavity (6) and a second inner cavity (7), an inclined partition layer (8) is installed between the first inner cavity (6) and the second inner cavity (7), a clamping groove (13) with uniform distribution is formed in the first inner cavity (6) and the second inner cavity (7), an arc-shaped air gathering plate (14) is fixedly connected at the top end of the clamping groove (13), a front furnace cover (9) and a rear furnace cover (10) are respectively clamped at the front end and the rear end of the annealing furnace body (1), an air outlet cavity (11) is formed in the front furnace cover (9), and a transition cavity (111) is formed in the rear furnace cover (10), heater (12) have all been linked firmly in zone of heating (3), air-out chamber (11), transition chamber (111), the bottom of preceding bell (9) is linked firmly air-out pipe (15) that run through.
2. The energy-saving annealing furnace for carbon steel forging heat treatment according to claim 1, characterized in that: the heating layer (3) is communicated with the air outlet cavity (11).
3. The energy-saving annealing furnace for carbon steel forging heat treatment according to claim 1, characterized in that: the first inner cavity (6) and the second inner cavity (7) are identical in structure and opposite in direction, the cross section of the first inner cavity (6) is in a right trapezoid shape, and the right-angled waist of the right trapezoid shape is parallel to the ground.
4. The energy-saving annealing furnace for carbon steel forging heat treatment according to claim 1, characterized in that: the top of the rear furnace cover (10) is provided with a first outlet (101), the first outlet (101) is communicated with the first inner cavity (6) and the transition cavity (111), the bottom of the front furnace cover (9) is provided with a second outlet (901), and the second outlet (901) is communicated with the second inner cavity (7) and the air outlet pipe (15).
5. The energy-saving annealing furnace for carbon steel forging heat treatment according to claim 4, wherein: the first outlet (101) and the second outlet (901) are identical in structure, and the cross section of the first outlet (101) is in an equilateral trapezoid shape.
6. The energy-saving annealing furnace for carbon steel forging heat treatment according to claim 1, characterized in that: the arc-shaped wind gathering plate (14) is arc-shaped, and the top end of the arc-shaped wind gathering plate (14) is not fixedly connected with the bottom end of the upper clamping groove (13).
7. The operating method of the energy-saving annealing furnace for carbon steel forging heat treatment according to claim 1, characterized by comprising the following operating steps:
s1, opening the front furnace cover (9) and the rear furnace cover (10), placing materials in the first inner cavity (6) and the second inner cavity (7) through the clamping groove (13), and then closing the front furnace cover and the rear furnace cover;
s2, turning on the heater (12), turning on the circulating fan (5) when the temperature of the heater (12) reaches an annealing set value, sucking cold air into the heating layer (3), and introducing hot air into the first inner cavity (6) through the air outlet cavity (11);
s3, automatically diffusing hot air in the first inner cavity (6), impacting the arc-shaped air collecting plate (14), passing through the upper end and the lower end of the arc-shaped air collecting plate (14) after being compressed, and collecting the hot air at the first outlet (101) to enter the transition cavity (111) for secondary heating;
s4, introducing secondary heating air into the second inner cavity (7), repeating the action of S3, introducing the air into the air outlet pipe (15) from the second outlet (901) and discharging the air out of the furnace;
and S5, closing the heater (12) after annealing is finished, enabling the circulating fan (5) to suck cold air to cool the material, and opening the front furnace cover and the rear furnace cover to cool the material outside the furnace after the temperature of the material is reduced to a temperature capable of cooling outside the furnace.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110858737.7A CN113584269B (en) | 2021-07-28 | 2021-07-28 | Energy-saving annealing furnace for carbon steel forging heat treatment and operation method thereof |
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| CN202110858737.7A CN113584269B (en) | 2021-07-28 | 2021-07-28 | Energy-saving annealing furnace for carbon steel forging heat treatment and operation method thereof |
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| CN113584269B CN113584269B (en) | 2022-12-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584286A (en) * | 2021-07-30 | 2021-11-02 | 许国平 | Aging furnace for alloy forging heat treatment process and control method thereof |
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| CN203846083U (en) * | 2014-04-30 | 2014-09-24 | 四川富国电工有限公司 | Annealing furnace with exhaust fan for cable production |
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| CN113584286A (en) * | 2021-07-30 | 2021-11-02 | 许国平 | Aging furnace for alloy forging heat treatment process and control method thereof |
| CN113584286B (en) * | 2021-07-30 | 2024-01-16 | 重庆林鹏耐磨钢球制造有限公司 | Aging furnace for alloy forging heat treatment process and control method thereof |
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Effective date of registration: 20221130 Address after: No. 17, Fengguo Road, Economic Development Zone, Yishui County, Linyi City, Shandong Province, 276,000 Applicant after: Yishui Jinxing Metal Products Co.,Ltd. Address before: 510900 No. 6, Jianshe South Road, Mingzhu Industrial Park, Conghua District, Guangzhou, Guangdong Applicant before: Xu Guoping |
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