CN105441664B - For carrying out the open fire tempering furnace and its heating means of tempering heating to plank - Google Patents
For carrying out the open fire tempering furnace and its heating means of tempering heating to plank Download PDFInfo
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- CN105441664B CN105441664B CN201410499218.6A CN201410499218A CN105441664B CN 105441664 B CN105441664 B CN 105441664B CN 201410499218 A CN201410499218 A CN 201410499218A CN 105441664 B CN105441664 B CN 105441664B
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Abstract
The invention discloses a kind of open fire tempering furnaces for being used to carry out plank tempering heating, it includes furnace body, burner hearth is formed in the furnace body, the burner hearth has the heating unit of multiple arranged in series, each heating unit is both provided with more furnace rollers, multiple burners and a reversible fan, the heating unit is divided into upper area and lower area by the furnace roller, the part burner is the top burner positioned at the upper area, and the remaining burner is the lower part burner positioned at the lower area；The reversible fan is set at the top of the heating unit, and the reversible fan upper cover is connected to kuppe, the gap circulated for furnace gas is formed between the kuppe and the furnace roller.In addition, the invention also discloses a kind of methods of heating.This open fire tempering furnace using the present invention and heating means can be convenient for accurate adjustable plate temperature.
Description
Technical field
The present invention relates to the tempering field of plank, in particular it relates to which a kind of be used to that plank be tempered to add
The open fire tempering furnace of heat and the method heated using the open fire tempering furnace to plank.
Background technology
After the tempering of material refers to material quenching, the proper temperature less than lower critical temperature is reheated to, keeps the temperature one section
The heat treatment process cooled down in medium (air or water, oil etc.) after time.Due to material, there are larger planted agents after quenching
Therefore power, will be tempered it, so as to improving structure stability, eliminating internal stress and improving the performance of material.
At present, in large-sized sheet material heat treatment department, be usually all using roller-way conveying continuous heat treating furnace to plank into
Row batch heat treatment.By plank for for steel plate, for steel plate tempering furnace, medium and high temperature tempering (heating temperature should be carried out
350~730 DEG C) heat treatment, it is also desirable to meet steel plate lonneal (150~250 DEG C) heat treatment requirements, and the steel of the two requirement
Plate heating temperature and furnace temperature difference are very big, lonneal steel plate are handled on the stove for meeting medium and high temperature tempering heat treatment, often
It is difficult to meet temperature uniformity requirement.
For existing open fire tempering furnace in lonneal, generally with circulating fan come uniform furnace gas, circulating fan is all solid
A fixed direction rotates, it is impossible to rotating.In addition using traditional bicrossing limitation tandem Combustion System, due to fuel and air
Flow be continuous proportioning variation, there is that temperature-controlled precision deviation is larger, and in-furnace temperature field distribution is not in Small Flow Control
The problems such as uniform.It is some that ± 5 DEG C of furnace temperature are ensured using improved bi -cross limitation control system in order to reach temperature-controlled precision,
But it controls hardware and complex software, poor reliability；Some use time sequence pulse controlled burning, by control burner burning sequential and
Time carrys out regulating and controlling furnace temperature, equally exists the problems such as control is complicated, and control can not be realized when problem occurs for burner.
Invention content
The present invention provides a kind of open fire tempering furnace and its heating means for being used to carry out plank tempering heating, can solve
Present in certainly existing tempering furnace the problem of being difficult to compatible high temperature tempering and lonneal.
To achieve the above object, the invention discloses a kind of for carrying out the open fire tempering furnace of tempering heating to plank,
In, including furnace body, burner hearth is formed in the furnace body, the burner hearth has the heating unit of multiple arranged in series, each described
Heating unit is both provided with more furnace rollers, multiple burners and a reversible fan, the furnace roller and separates the heating unit
For upper area and lower area, the part burner is the top burner positioned at the upper area, the remaining burning
Mouth is the lower part burner positioned at the lower area；The reversible fan is set at the top of the heating unit, it is described can be against the wind
Machine upper cover is connected to kuppe, and the gap circulated for furnace gas is formed between the kuppe and the furnace roller.
Preferably, eight burners are both provided in each heating unit, wherein four single to be set to the heating
Member roof top burner, remaining four be the lower sidewall for being set to the heating unit lower part burner.
Preferably, the kuppe includes horizontal top and the side of extension is bent downward by the both sides of the horizontal top
Portion offers through-hole in the horizontal top, is connected on the wind turbine by kuppe cover described in the through-hole.
Preferably, deflector hole is offered on the side of each kuppe, is provided with and leads above the deflector hole
Flowing plate, the deflector tilt extension towards lower section and towards the inside of the kuppe.
Preferably, it is provided with temperature thermocouple in the heating unit.
In addition, invention additionally discloses a kind of method for being used to carry out plank tempering heating, this method includes the following steps：
Plank is positioned on the furnace roller in burner hearth by step 1, and plank is located at below kuppe, burner combustion to plank into
Row heating, plank are constantly advanced；
Step 2, reversible fan rotate forward, and the high-temperature furnace gas that burner combustion generates is sucked by reversible fan in kuppe, right
Plank carries out heat convection heating；
Step 3, reversible fan reversion, the high-temperature furnace gas that burner combustion generates is blown out by reversible fan outside kuppe, to plate
Material carries out heat convection heating；
Step 4 repeats the action of step 2 and step 3, until plank is heated to tempering required temperature.
It preferably, can also be by the way that furnace roller rotating be driven to realize the reciprocating movement of plank, with further uniform in step 1
Plank temperature.
Preferably, the wind pressure of the reversible fan is 100~500Pa, and sheet metal thickness is 3~18mm.
Preferably, in step 1, lonneal heating is carried out to plank, only lower part burner is opened.
Preferably, the plank is steel plate.
The open fire tempering furnace for being used to carry out plank tempering heating of the present invention, sets kuppe and reversible in burner hearth
Wind turbine by the rotating of reversible fan, drives the high-temperature furnace gas in burner hearth to form periodic cycle in kuppe, so as to right
Plank is evenly heated, and realizes accurate temperature controlling.Especially, when to plank carry out lonneal when, by kuppe with it is reversible
Wind turbine is used cooperatively, and can obtain high-precision plate temperature.This method heated to plank of the present invention can be convenient for control
The heating temperature of panel.
Description of the drawings
Fig. 1 is the open fire tempering furnace for being used to carry out plank tempering heating of the present invention；
Fig. 2 is the structure diagram of kuppe in Fig. 1；
Fig. 3 is the partial enlarged view of part A in Fig. 1；
Fig. 4 is the left view schematic diagram of Fig. 1；
Fig. 5 is the schematic top plan view of Fig. 4.
Specific embodiment
In the following, with reference to attached drawing, this tempering to the structure of the open fire tempering furnace of the present invention, operation principle and the present invention
Method of heating etc. is further described.
Referring to Fig. 1, Fig. 4, Fig. 5, the invention discloses a kind of open fire tempering furnaces for being used to carry out plank tempering heating, should
Plank 10 can be steel plate, aluminium sheet, plate glass etc..The open fire tempering furnace includes furnace body 1, and burner hearth 2 is formed in furnace body 1, with
The working space of the tempering heating of plank 10 is formed, burner hearth 2 has the heating unit 20 of multiple arranged in series, each heating unit 20
It is reversible to be both provided with more furnace rollers 6, multiple burners (the top burner 4 being previously mentioned in following article and lower part burner 7) and one
Wind turbine 5.When open fire tempering furnace works, plank 10 is positioned on furnace roller 6, and furnace roller 6 is in driving mechanism (such as motor shown in figure
9 etc.) be rotated by, so as to fulfill the movement of plank 10.Heating unit 20 (or perhaps burner hearth 2) is divided by furnace roller 6
Upper area 21 and lower area 22, part burner be positioned at upper area 21 top burner 4, remaining burner be positioned at
The lower part burner 7 of lower area 22 respectively can heat it from the top of plank 10 with lower section in this way.Reversible fan 5 is set
In the top of heating unit 20,5 upper cover of reversible fan is connected to kuppe 3, is formed between kuppe 3 and furnace roller 6 for furnace gas
The gap of circulation, to carry out preferably heat convection to plank 10 by means of kuppe 3.
During work, by the rotating of reversible fan 5, high-temperature furnace gas in the heating unit 20 of burner hearth 2 is driven along water conservancy diversion
Cover 3 forms cycle, so as to the temperature of uniform high temperature furnace gas, and then the plank 10 being located in kuppe 3 is enable to obtain uniformly
Heating.Particularly when carrying out lonneal to plank 10, only 150 DEG C~250 DEG C of temperature is difficult to reach in existing method
To ± 5 DEG C required of temperature-controlled precision, and the device is used, then can reach ± 3 DEG C of temperature-controlled precision, meet work well
Skill requirement.
As shown in fig. 1, each heating unit 20 of burner hearth 2 is respectively provided with roof 201, side wall 202 and bottom wall 203.On
Portion's burner 4 is set to the roof 201 of the heating unit 20 of burner hearth 2, and lower part burner 7 is set to the side of the heating unit 20 of burner hearth 2
202 lower part of wall.Specifically, the burner quantity of each heating unit 20 can be eight with selected as, and four are top burner 4, remaining
Four for lower part burner 7, can be uniformly distributed in heating unit 20.
Referring to Fig. 2, as a kind of structure, kuppe 3 includes horizontal top 31 and downward by the both sides of horizontal top 31
The side 32 of extension is bent, through-hole 301 is offered in horizontal top 31, reversible fan 5 is connected to by 301 kuppe 3 of through-hole cover
On.Two sides 32 extend downwardly, and there are certain distances, plank 10 between furnace roller 6 to be positioned over furnace roller 6 and is provide with by kuppe 3
Position.
Referring to Fig. 3, it is preferred that, deflector hole 303, deflector hole 303 are offered on each side 32 of kuppe 3
Top be provided with deflector 302, deflector 302 tilts extension towards lower section and towards the inside of kuppe 3.The deflector hole
303 can increase the circulating area of high-temperature furnace gas, preferably to carry out heat convection to plank 10.A refers to kuppe in Fig. 3
The distance between 3 bottom end and furnace roller 6, b refer to the distance between lower edge and furnace roller 6 of deflector hole 303, and c refers to deflector hole 303
Height, e refers to the angle of deflector 302 and side 32, which can make such selection, and a is 80~150mm, and b is
400~1100mm, c are 50~150mm, and e is 25~50 °, in addition, the height of kuppe 3 can be with 1200~1800mm of selected as.
In addition, for ease of grasping furnace temperature, to know the heating state of plank 10, in each heating unit 20 of burner hearth 2
It is provided with temperature thermocouple 8.The temperature thermocouple 8 can respectively be set in the upper area 21 of heating unit 20 with lower area 22
It puts, so as to Real-time Feedback furnace temperature.
Referring to Fig. 4, Fig. 5, show to be continuous heat-treating drier, with multigroup aforementioned kuppe 3, reversible fan
5 and burner, to realize the batch to plank 10, continous way heat treatment.Kuppe 3, reversible fan 5 and the burner of the part
With it is noted earlier consistent, partition board (not indicated in figure) can be set between kuppe 3, to prevent interference in air flow.
In addition, invention additionally discloses a kind of method for being used to carry out plank 10 tempering heating, this method includes following step
Suddenly：
Plank 10 is positioned on the furnace roller 6 in burner hearth 2 by step 1, and plank 10 is located at 3 lower section of kuppe, burner combustion
Plank 10 is heated, plank is constantly advanced.
As shown in fig. 1, plank 10 is located at the top of furnace roller 6, while by 3 cages of kuppe, when burner combustion, stove
The temperature of each heating unit 20 is promoted in thorax 2, so as to directly or indirectly be heated to plank.
It is preferred that in this step, by the way that 6 rotating of furnace roller is driven to realize the reciprocating movement of plank 10, with into
Uniform 10 temperature of plank of one step.
In addition, in this step, when carrying out high temperature tempering heating to plank 10, whole burners can be opened；And work as
When carrying out lonneal heating to plank 10, can only it open lower part burner 7, later, by reversible fan 5 come uniform furnace gas.
Step 2, reversible fan 5 rotate forward, and the high-temperature furnace gas that burner combustion generates is sucked into kuppe 3 by reversible fan 5
It is interior, heat convection heating is carried out to plank 10.
As shown in the dotted arrow in Fig. 1, furnace gas is by reversible fan 5 by the gap between multiple furnace rollers 6 and kuppe 3
Gap between bottom end and furnace roller 6 is sucked into kuppe 3, is heated at this point it is possible to carry out preliminary heat convection to plank.
In the present invention, the wind pressure of reversible fan 5 can be with 100~500Pa of selected as, and 10 thickness of plank can be 3~18mm.
Step 3, reversible fan 5 invert, and the high-temperature furnace gas that burner combustion generates is blown out by reversible fan 5 outside kuppe 3,
Heat convection heating is carried out to plank 10.
As shown in the solid arrow in Fig. 1, reversible fan 5 inverts, at this point, furnace gas is blown out except kuppe 3, to plank
10 make further heat exchange.
Step 4 repeats the action of step 2 and step 3, until plank is heated to tempering required temperature.
5 rotating of reversible fan, constantly exchanges heat to plank 10, and plank is constantly advanced in stove, by more in burner hearth 2
The heated in sequence of a heating unit 20 progressively reaches the temperature of its requirement.Many conventional hands may be used in the monitoring of temperature
Section, such as thermocouple noted earlier etc..
The open fire tempering furnace for being used to carry out plank 10 tempering heating of the present invention, is set in 2 heating unit 20 of burner hearth
Kuppe 3 and reversible fan 5 by the rotating of reversible fan 5, drive the high-temperature furnace gas in heating unit 20 in kuppe
Periodic cycle is formed in 3, so as to be evenly heated to plank 10, realizes accurate temperature controlling.
More than, schematic description only of the invention, it will be recognized by those skilled in the art that in the work without departing from the present invention
On the basis of making principle, a variety of improvement can be made to the present invention, this is all belonged to the scope of protection of the present invention.
Claims (3)
1. a kind of open fire tempering furnace for being used to carry out plank tempering heating, which is characterized in that including furnace body, shape in the furnace body
Into there is a burner hearth, the burner hearth has a heating unit of multiple arranged in series, each heating unit be both provided with more furnace rollers,
The heating unit is divided into upper area and lower area, portion by multiple burners and a reversible fan, the furnace roller
It is the top burner positioned at the upper area to divide the burner, and the remaining burner is positioned at the lower part of the lower area
Burner；The reversible fan is set at the top of the heating unit, and the reversible fan upper cover is connected to kuppe, the kuppe
The gap circulated for furnace gas is formed between the furnace roller；
The kuppe includes horizontal top and the side of extension, the level is bent downward by the both sides of the horizontal top
Through-hole is offered on top, is connected on the wind turbine by kuppe cover described in the through-hole；
Deflector hole is offered on the side of each kuppe, deflector is provided with above the deflector hole, it is described to lead
Flowing plate tilts extension towards lower section and towards the inside of the kuppe.
2. the open fire tempering furnace as described in claim 1 for being used to carry out plank tempering heating, which is characterized in that each described
Eight burners are both provided in heating unit, wherein four be the roof for being set to the heating unit top burner, it is remaining
Four be the lower sidewall for being set to the heating unit lower part burner.
3. the open fire tempering furnace as described in claim 1 for being used to carry out plank tempering heating, which is characterized in that the heating
Temperature thermocouple is provided in unit.
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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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| Application Number | Priority Date | Filing Date | Title |
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| 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 CN105441664A (en) | 2016-03-30 |
| CN105441664B true CN105441664B (en) | 2018-06-26 |
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| CN107309140B (en) * | 2017-08-04 | 2020-03-17 | 北京首钢股份有限公司 | Strip steel 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 |
| 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 |
| CN110657433B (en) * | 2019-09-11 | 2023-12-29 | 上海炉艺智能科技发展有限公司 | Fuel gas cladding type low-nitrogen non-oxidation burner and use method thereof |
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| CN2144284Y (en) * | 1992-08-26 | 1993-10-20 | 秦皇岛通海发明技术开发研究所 | Resistance furnace for annealing aluminium material |
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| CN201971859U (en) * | 2010-12-27 | 2011-09-14 | 苏州新长光热能科技有限公司 | Efficient air circulation flow guiding device applicable to thermal treatment furnaces |
| CN103540734A (en) * | 2013-10-30 | 2014-01-29 | 洛阳市西格马炉业有限公司 | Air circulating gas furnace |
| CN103667666A (en) * | 2013-11-29 | 2014-03-26 | 中冶南方(武汉)威仕工业炉有限公司 | Continuous roller hearth type heat treatment furnace for plates and heat treatment method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2144284Y (en) * | 1992-08-26 | 1993-10-20 | 秦皇岛通海发明技术开发研究所 | Resistance furnace for annealing aluminium material |
| JP2009057621A (en) * | 2007-09-03 | 2009-03-19 | Jfe Steel Kk | Continuous heating furnace |
| CN201971859U (en) * | 2010-12-27 | 2011-09-14 | 苏州新长光热能科技有限公司 | Efficient air circulation flow guiding device applicable to thermal treatment furnaces |
| CN103540734A (en) * | 2013-10-30 | 2014-01-29 | 洛阳市西格马炉业有限公司 | Air circulating gas furnace |
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| CN105441664A (en) | 2016-03-30 |
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