CN105441664A - Open fire tempering furnace for tempering heating of sheet material and heating method thereof - Google Patents
Open fire tempering furnace for tempering heating of sheet material and heating method thereof Download PDFInfo
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- CN105441664A CN105441664A CN201410499218.6A CN201410499218A CN105441664A CN 105441664 A CN105441664 A CN 105441664A CN 201410499218 A CN201410499218 A CN 201410499218A CN 105441664 A CN105441664 A CN 105441664A
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Abstract
The invention discloses an open fire tempering furnace for tempering heating of a sheet material. The open fire tempering furnace comprises a furnace body; a hearth is formed inside the furnace body and is provided with a plurality of heating units arrayed in series; each heating unit is provided with a plurality of furnace rollers, a plurality of burners and a reversible draught fan; the heating units are divided into an upper zone and a lower zone by the furnace rollers; a part of burners are upper burners located at the upper zone, and the remaining burners are lower burners located at the lower zone; the reversible draught fans are arranged on the top parts of the heating units, an upper cover of each reversible draught fan is connected with a guide cover, and a gap for furnace gas to circulate is formed between each guide cover and the furnace rollers. In addition, the invention also discloses a heating method. The open fire tempering furnace and the heating method can conveniently and accurately adjust the temperature of a sheet.
Description
Technical field
The present invention relates to the tempering field of sheet material, specifically, a kind of method that the present invention relates to naked light tempering stove for carrying out tempering heating to sheet material and adopt this naked light tempering stove to heat sheet material.
Background technology
The tempering of material reheats the proper temperature lower than lower critical temperature after referring to material quenching, the heat treatment process of cooling in medium (air or water, wet goods) after insulation for some time.Because material exists larger internal stress after quenching, therefore, all will to its tempering, thus improve structure stability, eliminate internal stress and improve the performance of material.
At present, in large-sized sheet material heat treatment department, be all that to adopt the continuous heat treating furnace of roller-way conveying to carry out batch to sheet material heat treated usually.Take sheet material as steel plate be example, with regard to steel plate tempering furnace, medium and high temperature tempering (Heating temperature 350 ~ 730 DEG C) thermal treatment should be carried out, also demand fulfillment steel plate low-temperaturetempering (150 ~ 250 DEG C) heat treatment requirements, and both require steel plate Heating temperature and furnace temperature difference very large, the stove meeting medium and high temperature tempering heat treatment processes low-temperaturetempering steel plate, is often difficult to meet temperature uniformity requirement.
Existing naked light tempering stove is when low-temperaturetempering, and generally carry out even furnace gas with recirculation blower, recirculation blower is all fix a direction to rotate, can not rotating.Adopt traditional bicrossing limitation tandem Combustion System in addition, because the flow of fuel and air is the change of continuous proportioning, just there is temperature-controlled precision deviation when Small Flow Control comparatively large, the problems such as temperature field in furnace skewness.In order to reach temperature-controlled precision, the bi-cross limitation control system that some employings improve ensures ± 5 DEG C of furnace temperature, but its control hardware and complex software, poor reliability; Some employing time sequence pulse controlled burnings, by controlling burning sequential and the time regulating and controlling furnace temperature of burner, same exist control complexity, controls problems such as cannot realizing during burner generation problem.
Summary of the invention
The invention provides a kind of naked light tempering stove and heating means thereof for carrying out tempering heating to sheet material, it can solve the problem being difficult to high tempering and low-temperaturetempering in compatibility existing for existing tempering stove.
For achieving the above object, the invention discloses a kind of naked light tempering stove for carrying out tempering heating to sheet material, wherein, comprise body of heater, burner hearth is formed in described body of heater, described burner hearth has the heating unit of multiple arranged in series, each described heating unit is provided with many furnace rollers, multiple burner and a reversible fan, described heating unit is divided into upper area and lower region by described furnace roller, the described burner of part is the top burner being positioned at described upper area, and remaining described burner is the bottom burner being positioned at described lower region; Described reversible fan is arranged at described heating unit top, and described reversible fan upper cover is connected to pod, is formed with the gap of circulating for furnace gas between described pod and described furnace roller.
Preferably, be provided with eight burners in each described heating unit, wherein four for being arranged at the top burner of the roof of described heating unit, remaining four for being arranged at the bottom burner of the lower sidewall of described heating unit.
Preferably, described pod comprises horizontal top and is bent the sidepiece of extension by the both sides of described horizontal top downwards, described horizontal top offers through hole, is connected on described blower fan by pod cover described in described through hole.
Preferably, the sidepiece of each described pod all offers pod apertures, and the top of described pod apertures is provided with flow deflector, and described flow deflector tilts to extend towards below and towards the inner side of described pod.
Preferably, temperature thermocouple is provided with in described heating unit.
In addition, the present invention also discloses a kind of method for carrying out tempering heating to sheet material, and the method comprises the following steps:
Step one, be positioned over by sheet material on the furnace roller in burner hearth, sheet material is positioned at below pod, and burner combustion heats sheet material, and sheet material is constantly advanced;
Step 2, reversible fan rotates forward, and the high-temperature furnace gas that burner combustion produces is sucked in pod by reversible fan, carries out convective heat exchange heating to sheet material;
Step 3, reversible fan reverses, and the high-temperature furnace gas that burner combustion produces, by outside reversible fan blowout pod, carries out convective heat exchange heating to sheet material;
Step 4, the action of repeating step two and step 3, until it is temperature required that sheet material is heated to tempering.
Preferably, in step one, also by driving furnace roller rotating to realize moving back and forth of sheet material, with further evenly sheet material temperature.
Preferably, the blast of described reversible fan is 100 ~ 500Pa, and sheet metal thickness is 3 ~ 18mm.
Preferably, in step one, carry out low-temperaturetempering heating to sheet material, only bottom burner is opened.
Preferably, described sheet material is steel plate.
Naked light tempering stove for carrying out tempering heating to sheet material of the present invention, pod and reversible fan are set in burner hearth, by the rotating of reversible fan, drive the high-temperature furnace gas in burner hearth to form periodic cycle in pod, thus homogeneous heating is carried out to sheet material, realize accurate temperature controlling.Especially, when carrying out low-temperaturetempering to sheet material, by pod and reversible fan with the use of, high-precision plate temperature can be obtained.This method heated sheet material of the present invention, can be convenient to the Heating temperature controlling sheet material.
Accompanying drawing explanation
Fig. 1 is the naked light tempering stove for carrying out tempering heating to sheet material of the present invention;
Fig. 2 is the structural representation of pod in Fig. 1;
Fig. 3 is the partial enlarged drawing of part A in Fig. 1;
Fig. 4 is that schematic diagram is looked on a left side of Fig. 1;
Fig. 5 is the schematic top plan view of Fig. 4.
Embodiment
Below, by reference to the accompanying drawings, the method etc. of the structure of naked light tempering stove of the present invention, principle of work and this tempering heating of the present invention is further described.
See Fig. 1, Fig. 4, Fig. 5, the invention discloses a kind of naked light tempering stove for carrying out tempering heating to sheet material, this sheet material 10 can be steel plate, aluminium sheet, sheet glass etc.This naked light tempering stove comprises body of heater 1, burner hearth 2 is formed in body of heater 1, to form the working space of sheet material 10 tempering heating, burner hearth 2 has the heating unit 20 of multiple arranged in series, each heating unit 20 be provided with many furnace rollers 6, multiple burner (as hereinafter the top burner 4 mentioned and bottom burner 7) an and reversible fan 5.During the work of naked light tempering stove, sheet material 10 is positioned on furnace roller 6, and furnace roller 6 rotates under the driving of driving mechanism (motor 9 etc. such as shown in figure), thus realizes the movement of sheet material 10.Heating unit 20 (or perhaps burner hearth 2) is divided into upper area 21 and lower region 22 by furnace roller 6, part burner is the top burner 4 being positioned at upper area 21, remaining burner is the bottom burner 7 being positioned at lower region 22, can heat respectively like this from the top of sheet material 10 and below to it.Reversible fan 5 is arranged at the top of heating unit 20, and reversible fan 5 upper cover is connected to pod 3, is formed with the gap of circulating for furnace gas between pod 3 and furnace roller 6, to carry out convective heat exchange better by means of pod 3 pairs of sheet materials 10.
During work, by the rotating of reversible fan 5, the high-temperature furnace gas in the heating unit 20 of burner hearth 2 is driven to form circulation along pod 3, thus the temperature of even high-temperature furnace gas, and then the sheet material 10 being positioned at pod 3 can be heated uniformly.Particularly when carrying out low-temperaturetempering to sheet material 10, tempering temperature only 150 DEG C ~ 250 DEG C, is difficult to reach the temperature-controlled precision of required ± 5 DEG C, and adopts this device with existing method, then can reach ± the temperature-controlled precision of 3 DEG C, meet processing requirement well.
As shown in fig. 1, each heating unit 20 of burner hearth 2 all has roof 201, sidewall 202 and diapire 203.Top burner 4 is arranged at the roof 201 of the heating unit 20 of burner hearth 2, and bottom burner 7 is arranged at sidewall 202 bottom of the heating unit 20 of burner hearth 2.Particularly, the burner quantity of each heating unit 20 can be chosen as eight, and four is top burner 4, and remaining four is bottom burner 7, and it can be uniformly distributed in heating unit 20.
See Fig. 2, as a kind of structure, pod 3 comprises horizontal top 31 and is bent the sidepiece 32 of extension by the both sides of horizontal top 31 downwards, horizontal top 31 offers through hole 301, is connected on reversible fan 5 by through hole 301 pod 3 cover.To downward-extension, and there is certain distance between furnace roller 6 in two sidepieces 32, sheet material 10 is positioned over the diversed cover 3 of furnace roller 6 and covers the position of establishing.
See Fig. 3, as optimal way, each sidepiece 32 of pod 3 all offers pod apertures 303, the top of pod apertures 303 is provided with flow deflector 302, and flow deflector 302 tilts to extend towards below and towards the inner side of pod 3.This pod apertures 303 can increase the circulating area of high-temperature furnace gas, to carry out convective heat exchange to sheet material 10 better.In Fig. 3, a refers to the distance between the bottom of pod 3 and furnace roller 6, b refers to the distance between the lower edge of pod apertures 303 and furnace roller 6, c refers to the height of pod apertures 303, and e refers to the angle of flow deflector 302 and sidepiece 32, and this parameter can do such selection, a is 80 ~ 150mm, b is 400 ~ 1100mm, c be 50 ~ 150mm, e is 25 ~ 50 °, in addition, the height of pod 3 can be chosen as 1200 ~ 1800mm.
In addition, for ease of grasping furnace temperature, to know the heating state of sheet material 10, in each heating unit 20 of burner hearth 2, temperature thermocouple 8 is provided with.This temperature thermocouple 8 can be arranged, so that Real-time Feedback furnace temperature with lower region 22 respectively at the upper area 21 of heating unit 20.
See Fig. 4, Fig. 5, shown in it is continuous heat-treating drier, and it has many group aforesaid pod 3, reversible fan 5 and burner, to realize batch to sheet material 10, continous way thermal treatment.Pod 3, the reversible fan 5 of this part all with noted earlier consistent, can arrange dividing plate (not indicating in figure), to prevent interference in air flow with burner between pod 3.
In addition, the present invention also discloses a kind of method for carrying out tempering heating to sheet material 10, and the method comprises the following steps:
Step one, be positioned over by sheet material 10 on the furnace roller 6 in burner hearth 2, sheet material 10 is positioned at below pod 3, and burner combustion heats sheet material 10, and sheet material is constantly advanced.
As shown in fig. 1, sheet material 10 is positioned at the top of furnace roller 6, simultaneously diversed cover 3 cages, when burner combustion, and the temperature increase of each heating unit 20 in burner hearth 2, thus directly or indirectly can heat sheet material.
As optimal way, in this step, by driving furnace roller 6 rotating to realize moving back and forth of sheet material 10, with further evenly sheet material 10 temperature.
In addition, in this step, when carrying out the heating of middle high tempering to sheet material 10, whole burner can be opened; And when carrying out low-temperaturetempering heating to sheet material 10, can only open by bottom burner 7, afterwards, by reversible fan 5 evenly furnace gas.
Step 2, reversible fan 5 rotates forward, and the high-temperature furnace gas that burner combustion produces is sucked in pod 3 by reversible fan 5, carries out convective heat exchange heating to sheet material 10.
As shown in the dotted arrow in Fig. 1, furnace gas is sucked into pod 3 by reversible fan 5 by the gap between multiple furnace roller 6 and the gap between pod 3 bottom and furnace roller 6, now, can carry out preliminary convective heat exchange heating to sheet material.
In the present invention, the blast of reversible fan 5 can be chosen as 100 ~ 500Pa, and sheet material 10 thickness can be 3 ~ 18mm.
Step 3, reversible fan 5 reverses, and the high-temperature furnace gas that burner combustion produces is blown out outside pod 3 by reversible fan 5, carries out convective heat exchange heating to sheet material 10.
As shown in the solid arrow in Fig. 1, reversible fan 5 reverses, and now, furnace gas is blown outside pod 3, does further heat exchange to sheet material 10.
Step 4, the action of repeating step two and step 3, until it is temperature required that sheet material is heated to tempering.
Reversible fan 5 rotating, carry out continuous heat exchange to sheet material 10, sheet material is constantly advanced in stove, by the heated in sequence of heating unit 20 multiple in burner hearth 2, progressively reaches the tempering temperature that it requires.The monitoring of temperature can adopt many conventional meanses, such as thermopair noted earlier etc.
Naked light tempering stove for carrying out tempering heating to sheet material 10 of the present invention, pod 3 and reversible fan 5 are set in burner hearth 2 heating unit 20, by the rotating of reversible fan 5, the high-temperature furnace gas in heating unit 20 is driven to form periodic cycle in pod 3, thus homogeneous heating is carried out to sheet material 10, realize accurate temperature controlling.
Above, be only schematic description of the present invention, it will be recognized by those skilled in the art that on the basis of not departing from principle of work of the present invention, can make multiple improvement to the present invention, this all belongs to protection scope of the present invention.
Claims (10)
1. one kind for carrying out the naked light tempering stove of tempering heating to sheet material, it is characterized in that, comprise body of heater, burner hearth is formed in described body of heater, described burner hearth has the heating unit of multiple arranged in series, each described heating unit is provided with many furnace rollers, multiple burner and a reversible fan, described heating unit is divided into upper area and lower region by described furnace roller, the described burner of part is the top burner being positioned at described upper area, and remaining described burner is the bottom burner being positioned at described lower region; Described reversible fan is arranged at described heating unit top, and described reversible fan upper cover is connected to pod, is formed with the gap of circulating for furnace gas between described pod and described furnace roller.
2. as claimed in claim 1 for carrying out the naked light tempering stove of tempering heating to sheet material, it is characterized in that, eight burners are provided with in each described heating unit, wherein four for being arranged at the top burner of the roof of described heating unit, remaining four for being arranged at the bottom burner of the lower sidewall of described heating unit.
3. as claimed in claim 1 for carrying out the naked light tempering stove of tempering heating to sheet material, it is characterized in that, described pod comprises horizontal top and is bent the sidepiece of extension by the both sides of described horizontal top downwards, described horizontal top offers through hole, is connected on described blower fan by pod cover described in described through hole.
4. as claimed in claim 3 for carrying out the naked light tempering stove of tempering heating to sheet material, it is characterized in that, the sidepiece of each described pod all offers pod apertures, the top of described pod apertures is provided with flow deflector, and described flow deflector tilts to extend towards below and towards the inner side of described pod.
5. as claimed in claim 1 for carrying out the naked light tempering stove of tempering heating to sheet material, it is characterized in that, in described heating unit, be provided with temperature thermocouple.
6., for carrying out a method for tempering heating to sheet material, the method comprises the following steps:
Step one, be positioned over by sheet material on the furnace roller in burner hearth, sheet material is positioned at below pod, and burner combustion heats sheet material, and sheet material is constantly advanced;
Step 2, reversible fan rotates forward, and the high-temperature furnace gas that burner combustion produces is sucked in pod by reversible fan, carries out convective heat exchange heating to sheet material;
Step 3, reversible fan reverses, and the high-temperature furnace gas that burner combustion produces, by outside reversible fan blowout pod, carries out convective heat exchange heating to sheet material;
Step 4, the action of repeating step two and step 3, until it is temperature required that sheet material is heated to tempering.
7. as claimed in claim 6 for carrying out the method for tempering heating to sheet material, it is characterized in that, in step one, also by driving furnace roller rotating to realize moving back and forth of sheet material, with further evenly sheet material temperature.
8. as claimed in claim 6 for carrying out the method for tempering heating to sheet material, it is characterized in that, the blast of described reversible fan is 100 ~ 500Pa, and sheet metal thickness is 3 ~ 18mm.
9. as claimed in claim 6 for carrying out the method for tempering heating to sheet material, it is characterized in that, in step one, carry out low-temperaturetempering heating to sheet material, only bottom burner is opened.
10. as claimed in claim 6 for carrying out the method for tempering heating to sheet material, it is characterized in that, described sheet material is steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410499218.6A CN105441664B (en) | 2014-09-25 | 2014-09-25 | For carrying out the open fire tempering furnace and its heating means of tempering heating to plank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410499218.6A CN105441664B (en) | 2014-09-25 | 2014-09-25 | For carrying out the open fire tempering furnace and its heating means of tempering heating to plank |
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| CN105441664A true CN105441664A (en) | 2016-03-30 |
| CN105441664B CN105441664B (en) | 2018-06-26 |
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| CN201410499218.6A Active CN105441664B (en) | 2014-09-25 | 2014-09-25 | For carrying out the open fire tempering furnace and its heating means of tempering heating to plank |
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Cited By (5)
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| CN107309140A (en) * | 2017-08-04 | 2017-11-03 | 北京首钢股份有限公司 | A kind of strip production system and method |
| CN107619910A (en) * | 2017-09-21 | 2018-01-23 | 江苏恒力炉业有限公司 | A kind of thermal cycle car type furnace |
| CN108546815A (en) * | 2018-04-20 | 2018-09-18 | 特诺恩技术（天津）有限公司 | Wide and Thick Slab roller bottom furnace system with strong convection circulator |
| CN110657433A (en) * | 2019-09-11 | 2020-01-07 | 向顺华 | Gas cladding type low-nitrogen non-oxidation burner |
| CN111811284A (en) * | 2019-03-25 | 2020-10-23 | 广东金意陶陶瓷集团有限公司 | Roller kiln preheating zone flue gas diversion system suitable for powder sintering production foamed ceramics |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105441664B (en) | 2018-06-26 |
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