CN107287395A - A kind of trolley type annealing furnace - Google Patents
A kind of trolley type annealing furnace Download PDFInfo
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- CN107287395A CN107287395A CN201710672731.4A CN201710672731A CN107287395A CN 107287395 A CN107287395 A CN 107287395A CN 201710672731 A CN201710672731 A CN 201710672731A CN 107287395 A CN107287395 A CN 107287395A
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- 238000000137 annealing Methods 0.000 title claims abstract description 77
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 239000011324 bead Substances 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims abstract description 5
- 239000012298 atmosphere Substances 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 30
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000010425 asbestos Substances 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 21
- 239000010959 steel Substances 0.000 description 21
- 238000010438 heat treatment Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000005269 aluminizing Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- PWKWDCOTNGQLID-UHFFFAOYSA-N [N].[Ar] Chemical compound [N].[Ar] PWKWDCOTNGQLID-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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Classifications
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
Abstract
This application discloses a kind of trolley type annealing furnace, including：Chassis, body of heater, the body of heater are sealed on chassis by way of self gravitation is fastened；Motor is provided with chassis, the motor is connected with axial flow blower by bead apex, workpiece is placed with above axial flow blower；Backwind tube laterally, is vertically equipped with respectively between workpiece and the chassis sealing surface of chassis, horizontal, the vertical backwind tube laid respectively forms wind-tunnel in both center intersections, the axial flow blower is arranged in the wind-tunnel, and the wind blown out from axial flow blower passes through the wind-tunnel after-blow to workpiece；The cooling circulation pipe of a ring shape is equipped with around workpiece in the lower section of workpiece, body of heater, the cooling circulation pipe is connected by pipeline with the variable-frequency motor outside body of heater, variable-frequency motor is by the air that compresses it to progress cooling processing in burner hearth.The present invention has takes into account investment, operating cost, workpiece quality and simple in construction, efficient, energy-conservation, the beneficial effect of reduction production cost simultaneously.
Description
Technical field
The application belongs to special steel technical field of heat treatment, specifically, is related to a kind of trolley type annealing furnace.
Background technology
Trolley type annealing furnace is metal material most widely used heat during metallurgy, machining, pressure processing etc.
One of processing equipment.Trolley type annealing furnace is a kind of annealing furnace being most widely used in special steel production, and it can be obtained extensively
Plant area under overhead traveling crane is taken in short-term using only chassis is come from, body of heater is placed in attached factory building and area is educated in driving, save nearly 60% annealing
Process occupies main building investment.It is different with investment positioning for natural gas gas bar part, production kind according to area, form different type
Trolley type annealing furnace.
At present, existing annealing furnace is during heated partses, due in 600-900 DEG C of interval, the width of resistance heating
Penetrate the hot thermal efficiency low, high energy consumption；And because the annealing furnace levels temperature difference is big, the temperature difference is slow by being incubated 30-50 DEG C of the temperature difference at initial stage
5-10 DEG C is slowly narrowed down to, further, since the bridging effect of central workpiece, the temperature of heating near body of heater resistive band than heating
Temperature is low, causes workpiece temperature in burner hearth uneven；This gap great disparity is directed at that two parts are heated asynchronous compared with conference, and workpiece is saturating
Burn soaking time different, material structure uniformity in influence stove；
Secondly, according to existing trolley type annealing furnace heat treatment cycle curve requirement, it is less than 702 DEG C when fire box temperature is reached
Cooling velocity is too slow during slow cooling section area afterwards, and special pearl steel production needs higher annealing heat-treats ability, and car-type is moved back at present
The fiery occupancy cycle is longer, it is necessary to 60-72 hours, as production capacity bottleneck.
The content of the invention
In view of this, technical problems to be solved in this application are to provide one kind and take into account investment, operating cost, workpiece quality
The efficiency of heating surface is high and heating after in-furnace temperature is uniform and the fast trolley type annealing furnace of annealing speed.
In order to solve the above-mentioned technical problem, the application has opened a kind of trolley type annealing furnace, including：Chassis, body of heater, the stove
Body is sealed on chassis by way of self gravitation is fastened；
Motor is provided with chassis, the motor is connected with axial flow blower by bead apex, in the upper of axial flow blower
Side is placed with workpiece；
It is horizontal between workpiece and the chassis sealing surface of chassis, vertical to be equipped with backwind tube, described horizontal, vertical point respectively
The backwind tube do not laid forms wind-tunnel in both center intersections, and the axial flow blower is arranged in the wind-tunnel, from axle stream wind
The wind of machine blowout passes through the wind-tunnel after-blow to workpiece；
The cooling circulation pipe of a ring shape is equipped with around workpiece in the lower section of workpiece, body of heater, the cooling circulation pipe leads to
Piping is connected with the variable-frequency motor outside body of heater, and variable-frequency motor is by the air that compresses it to carrying out cooling processing in burner hearth.
Further, trolley type annealing furnace as described above, is separately installed with the top of body of heater for detecting in body of heater
The sensor of oxygen content to instillation liquid in body of heater with making micro- atmosphere dropper that the micro- atmosphere of micro- reduced form is formed in body of heater, institute
The one end for stating micro- atmosphere dropper is stretched into the inner cover of body of heater, and the other end is passed through mouth with micro- atmosphere and connected.
Further, trolley type annealing furnace as described above, flowmeter is provided with micro- atmosphere dropper.
Further, trolley type annealing furnace as described above, is provided with a circle groove on the chassis sealing surface of chassis, should
The position correspondence furnace sealing face of groove, is placed with the flexible sealing pipe being made up of asbestos in the groove.
Further, trolley type annealing furnace as described above, lift is provided with chassis both sides, is set on lift
There is projection, body of heater lifting locating pin corresponding with the bump position is provided with the both sides of body of heater, the body of heater passes through lifting
Machine realizes the opening and sealing to body of heater.
Further, trolley type annealing furnace as described above, workpiece is placed on workpiece bolster, and workpiece bolster is arranged on back
The top of airduct.
Compared with prior art, the application can be obtained including following technique effect：
The trolley type annealing furnace that the present invention is provided, on the one hand, by installing axial flow blower in burner hearth, furnace gas is sent by wind-tunnel
Enter burner hearth, the structural shape for returning to progress thermal cycle in wind-tunnel by the return air duct extended in all direction realizes samming in body of heater
Effect, so as to reach the purpose of energy-conservation；On the other hand, by putting interior cooling circulating line inside and outside burner hearth, frequency conversion is passed through
The air quantity and dish valve flow of motor control compressed air controls the heat taken away out of burner hearth, realizes in furnace chamber and quickly cools down
Effect so that reach saving the workpiece annealing cycle, make workpiece completion reach efficient purpose.Therefore, the present invention has simultaneously
Take into account investment, operating cost, workpiece quality and simple in construction, efficient, energy-conservation, the beneficial effect of reduction production cost.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please is used to explain the application, does not constitute the improper restriction to the application.In the accompanying drawings：
Fig. 1 is present invention annealing furnace side center facade structures schematic diagram；
Fig. 2 is Fig. 1 left view sectional view；
Fig. 3 is the fragmentary top sectional view that Fig. 1 saves each part；
Brief description of the drawings：
1- chassis；2- cools down circulation pipe；3- backwind tubes；4- bodies of heater；5- axial flow blowers；The micro- atmosphere droppers of 6-；7- lifts；
8- sensors；9- inner covers；10- motors；11- bead apexes；The hot gas flowing signal of 12- directions 1；13- workpiece；14- workpiece bolsters；
15- furnace sealings face；16- chassis sealing surfaces；17- bodies of heater lift locating pin；The hot gas flowing signal of 18- directions 2；19- flowmeters；
The micro- atmosphere of 20- is passed through mouth；21- coolings circulate direction signal；22- cools down loop exit；23- variable-frequency motors；24- flexibilities are close
Tube sealing.
Embodiment
Describe presently filed embodiment in detail below in conjunction with drawings and Examples, thereby how the application is applied
Technological means can fully understand and implement according to this to solve technical problem and reach the implementation process of technology effect.
As Figure 1-Figure 2, the present invention provides a kind of trolley type annealing furnace, including：Chassis 1, body of heater 4, the body of heater 4 lead to
The mode for crossing self gravitation fastening is sealed on chassis 1；
Motor 10 is provided with chassis 1, the motor 10 is connected with axial flow blower 5 by bead apex 11, in axle stream
The top of blower fan 5 is placed with workpiece 13；
Between workpiece 13 and the chassis sealing surface 16 of chassis 1 laterally, it is vertical be equipped with backwind tube 3 respectively, it is described it is horizontal,
The vertical backwind tube 3 laid respectively forms wind-tunnel in both center intersections, and the axial flow blower 5 is arranged in the wind-tunnel,
The wind blown out from axial flow blower 5 passes through the wind-tunnel after-blow to workpiece 13；
The cooling circulation pipe 2 of a ring shape is equipped with around workpiece 13 in the lower section of workpiece 13, body of heater 4, the cooling is followed
Endless tube 2 is connected by pipeline with the variable-frequency motor 23 outside body of heater, and variable-frequency motor 23 is by the air that compresses it to entering in burner hearth
Row cooling is handled.
Operation principle：Body of heater 4 is buckled in by way of self gravitation is fastened on chassis 1 so that the furnace sealing on body of heater 4
The contact with the chassis sealing surface 16 on chassis 1 of face 15, so as to realize body of heater 4 and the sealing purpose of chassis 1.
Quick samming process：During workpiece is heated, in order to make the temperature rapid increase in body of heater, and
The temperature in body of heater is set quickly to realize the effect of samming, the driving bead apex 11 of motor 10 drives axial flow blower 5 to rotate, in Fig. 1
Middle thermal current flows the arrow of signal 12 through the interior circulation of backwind tube 3 through the hot gas of direction 1；Thermal current is through the thermal current of direction 2 in fig. 2
The arrow of dynamic signal 18 realizes furnace gas and sends into burner hearth by wind-tunnel, pass through the return air duct extended in all direction through the interior circulation of backwind tube 3
Return in wind-tunnel and carry out the effect that heat is followed, so as to reach the purpose of temperature equalization in body of heater.
Fast cooling process：Variable-frequency motor 23 is by controlling the air quantity and dish valve flow of compressed air to make compressed air through cold
But the direction of arrow that circulation pipe 2 occurs to circulate direction signal 21 by cooling after internal heat exchange flows (as shown in Figure 3), most
Hot gas is discharged through cooling down loop exit 22 eventually, it is achieved thereby that the pressure cooling purpose of stove.
Preferably, trolley type annealing furnace as described above, is separately installed with the top of body of heater 4 for detecting oxygen in body of heater
The sensor 8 of Gas content to instillation liquid in body of heater with making micro- atmosphere dropper 6 that the micro- atmosphere of micro- reduced form is formed in body of heater, institute
The one end for stating micro- atmosphere dropper 6 is stretched into the inner cover 9 of body of heater 4, and the other end is passed through mouth 20 with micro- atmosphere and connected.
Specifically, the oxygen gesture of stove in operation in the detection of sensor 8 stove, if during the super monitoring value of oxygen gesture, control system is beaten
Flowmeter switch 19 is driven, the micro- atmosphere of micro- reduced form is formed by industrial alcohol, mouth 20, flowmeter switch 19 and micro- atmosphere is passed through
Dropper 6 is instilled in inner cover 9, realizes the purpose of reduction oxygen gesture.
Existing common trolley type annealing furnace will reach that anaerobic or low-level oxidation reducing atmosphere are difficult to realize, while also can be
Steel surface state, generation oxide skin and increase decarburized layer are destroyed during annealing high-temperature heating, therefore need to load aluminizing pipe with workpiece
Interior progress protection flash annealing；And senior bogie type gas annealing furnace lead to nitrogen or argon atmosphere annealing, equipment investment and
Operating cost is high, and production efficiency is low, it is difficult to which extensive use, i.e. equipment Low investment do not have a gas shield, it is with high investment can not be to stove
Gas carries out thermal cycle flowing.
Preferably, flowmeter 19 is provided with trolley type annealing furnace as described above, micro- atmosphere dropper 6.
Specifically, the oxygen gesture in body of heater is monitored in order to effective monitoring, determines what is instilled in body of heater according to actual needs
Alcohol amount, the present invention is provided with flowmeter 19 on micro- atmosphere dropper 6.
Preferably, trolley type annealing furnace as described above, is provided with a circle groove on the chassis sealing surface 16 of chassis 1,
The position correspondence furnace sealing face 15 of the groove, is placed with the flexible sealing pipe 24 being made up of asbestos in the groove.
Specifically, the present invention is sealed by the way that resistant to elevated temperatures asbestos material flexible sealing pipe 24 to be placed on to the chassis of chassis 1
In the groove in face 16, so as to further increase the sealing of body of heater and chassis.
Preferably, trolley type annealing furnace as described above, is provided with lift 7 in the both sides of chassis 1, is set on lift 7
Projection is equipped with, body of heater lifting locating pin 17 corresponding with the bump position is provided with the both sides of body of heater 4, the body of heater 4 leads to
Cross lift 7 and realize opening and sealing to body of heater 4.Workpiece 13 is placed on workpiece bolster 14, and workpiece bolster 14 is arranged on back
The top of airduct 3.
Specifically, body of heater 4 and chassis 1 realize opening and sealing to body of heater 4 by lift 7, rise when lift 7 or
After decline, realize the contact with the chassis sealing surface 16 on chassis 1 of furnace sealing face 15 on body of heater 4 or do not contact.
Due to the structure design of chassis and body of heater, its sealing function cannot be ensured existing trolley type annealing furnace, in chassis
Using process temperature distortion and contact surface abrasion, contact sealing surface is set to lose sealed function；Sand sealing is another sealing means,
The irregular particle of sand makes there is space between shape, also can not reliably be sealed.
Common car-type electric annealing furnace is in oxidized atmosphere when working, the fine-tuning furnace atmosphere function of combustion gas annealing furnace
It is limited, to reach that reproducibility anaerobic or micro- oxygen furnace atmosphere are difficult to realize or reached but extremely unstable in short term, generate steel table
Surface oxidized skin, decarburized layer increase；The another part of light section bar, metal can not put up with, it is necessary to cases and carries out sealing protection annealing into pipe,
Decline charge weight, annealing cost rises and production efficiency is low；
Senior bogie type gas annealing furnace bell-jar leads to argon gas, nitrogen protection annealing, Horizontal tubular sealing structure gas
The annealing furnace of forms of protection or the only obstructed protective gas of button cover；Two kinds of technology pattern annealing furnaces all suffer from charge weight and are limited, heat up
Soaking time is longer, the annealing cycle is long, and the equipment investment of special atmosphere furnace and the too high dilemma of operating cost are difficult to extensively
General application；
Special pearl steel production needs higher production capacity surplus, and trolley type annealing furnace needs 60-72 hours cycles annealed above, into
For part kind production capacity bottleneck；More unfavorable is influence to quality, as high-speed steel tool steel, high alloy mould steel, alloy
When the special rolling-mill sections such as tool steel are annealed, high temperature heating time extension can produce the unnecessary additional agglomeration of alloy carbide and grow up,
Adverse effect is brought to the hot place of lower process；In decarburized layer region, carbon-poor area causes carbon-poor area to swallow with carbon-rich zone solid-state diffusion
Carbon-rich zone, partially or fully extinction tests increases alloy carbide, the increase of steel decarburized layer.This present expensive nitrogen argon gas
Equally existed in protection annealing process.Big cross section instrument steel tolerance zone is wide, and this respect decarburization oxidation is gone back in annealing process
Do not protrude；Light section material (containing band steel) another part is it is necessary to fill stainless steel cask or the annealing of ￠ 320x4500 aluminisings iron pipe, and annealing furnace is specified
Your 50-60% of space utilization rate, production efficiency is low.
In summary, the present invention has mainly captured current special Steel Bar, light section band steel, strip, wire rod annealed
Need safeguard measure, the steel such as loading aluminising protection of pipe or the stainless steel cage+argon gas of button, nitrogen diathermanous slow in journey, the levels temperature difference
The uneven and big technical barrier of annealing cycle length three, realizes Low investment, low cost operation updates common trolley type annealing furnace
Regenerate into energy-efficient, the economical brightness heat treatment trolley type annealing furnace of the present invention.The present invention changes traditional car-type and moved back
The sealing structure pattern and operational mode of stove, inject a kind of material into cover with micro- atmosphere sprayer, can form Diversity
Protective atmosphere control oxygen realizes brightness heat treatment；Axial flow blower is installed in burner hearth or in cover in wind-tunnel and disturbs furnace gas in furnace chamber
Enter the air -return duct that extends in all direction after flowing and carry out thermal cycle, accelerate steel and burn above and below speed and steel that temperature is uniform thoroughly, carry
The high annealing quality of bar；When fire box temperature enters 702-500 DEG C of interval of Slow cooling, the outside heat loss through conduction of body of heater enters
Enter lag phase, networked with internal recycle pipeline inside and outside body of heater and temperature sensor, it is cold to burner hearth control significantly by annealing curve requirement
Annealing cycle shortening.Present invention eliminates the structure of aluminizing pipe, so as to save space.
The present invention realizes the brightness heat treatment of workpiece surface low-level oxidation by following 3 means；
1st, on body of heater baseplane and chassis plane using fastening type seal form of vertically conducting oneself with dignity；
2nd, micro- atmosphere (polynary) gas shield；
3rd, the quick samming of body of heater and forced cooling measure.
The invention has the advantages that：
(1) changed with sealing structure pattern, obtained compared with high sealed, the micro- qi leel protection of cheap multicomponent gas could be realized
The function of brightness heat treatment, realizes that equipment investment is low, and running cost is low, can wide popularization and application.Car-type is annealed
The body of heater of stove is changed into along 4 pillars of support body of heater to be mechanically or hydraulically that power hangs down body of heater plane from being fixedly connected with the ground
Translation is moved, and plane is moved back body of heater with chassis composition using deadweight fastening type integral sealing form on body of heater baseplane and chassis surrounding
Stove one；The purpose of this sealing structure is to improve sealing reliability, prevents body of heater from deforming and reducing in longtime running
Tightness, is to realize the structure that micro- atmosphere multicomponent gas protection needs, could carry out burner hearth and keep micro- carbon potential, anaerobic or micro- oxygen many
Micro- atmosphere protection of first mixed gas；With the measurement micro- carbon potential monitoring device sealing property of burner hearth, operating cost expends extremely low, can grasped
The property made is close with current trolley type annealing furnace operating characteristics.Have fire door using one end, up and down fine motion conduct oneself with dignity sealed body of heater and
Inject a kind of inexpensive substance and form polynary protective atmosphere, ingot blank and big-and-middle bar requirement can be met；Use bell-jar body of heater or interior
Cover long range stroke vertically forms micro- atmosphere and pressure-fired Diversity gas protective atmosphere from resealing+injection, can expire
The heat treatment of sufficient wire rod, light section band steel strip non-oxidation glossy surface.
In summary, no matter sealing structure form and micro- atmosphere protection composition, annealing cost and protection are selected using which kind of
Both effects are all higher than the Annealing Protection technological level of dress aluminizing pipe.
(2) axial flow blower is installed on the chassis of trolley type annealing furnace, by axial flow blower in wind-tunnel+air -return duct to burner hearth
Interior gas carries out the blast agitation furnace gas rising flow-disturbing that fan is produced in wind-tunnel in flow-disturbing thermal cycle, burner hearth and flowed through in steel surface
Enter feeding wind-tunnel thermal cycle again after air -return duct afterwards, because furnace gas is turned round only in burner hearth, heat without extraneoas loss but effectively
Improve electrical efficiency and levels workpiece temperature uniformity.
Chassis plane keeps preferable flatness to derive from stainless steel brackets Light deformation under the conditions of long-term use, and it is also
Stove function and the guarantee with long service life.
The thermal efficiency of annealing furnace depends primarily on hot swap condition, the width in the range of 600~900 DEG C in body of heater radiating and stove
Penetrate the thermal efficiency low, if being disturbed to furnace gas, advection heat ratio is gradually increasing, and is finally occupied an leading position, and electrical efficiency will be shown
Write and improve；Special Steel Bar, wire rod and band steel (except austenitic stainless steel) annealing temperature substantially in the range of 600~900 DEG C,
Therefore flow-disturbing heat-transfer effect is the effective way for improving annealing furnace thermal efficiency.
In order to control anneal cooling procedure cooling velocity, burner hearth set internal recycle pipeline structure design can part
Instead of body of heater natural heat dissipation, heat in burner hearth is taken away, the annealing cycle is shortened.Interior circulation is put in annealing chassis upper furnace
Heat resisting steel pipeline, hangs hot channel, it is non-interference with atmosphere in burner hearth in chassis bottom surrounding, partly body of heater can be replaced natural
Heat in burner hearth is taken away in radiating.After special Steel Bar annealing process temperature is down to 702 DEG C, the contribution of conduction heat is progressively accounted for
Peak, relies on the excessively slow phenomenon non-annealing process curve requirement of body of heater radiating and cooling speed, spins out the annealing cycle, as annealing operation
The bottleneck of production capacity limitation, when annealing curve marches toward≤15 DEG C/h of temperature descending section at a slow speed, is started and regulation compressed air frequency conversion
Motor air volume and drain tap and with instrument automatic control system networking.
The present invention in sealed chassis burner hearth, axial flow blower stir rice it is dynamic under, red-hot furnace gas flow-disturbing between workpiece,
The crisscross backwind tube feeding wind-tunnel for laying chassis fireproof heat-insulating layer plane is returned to, is realized above and below quick burning thoroughly and equal heated work pieces
Layer temperature difference.The backwind tube that is horizontal, vertically laying is intersected in wind-tunnel in wind-tunnel, by axial flow blower hot gas in wind-tunnel
It is a kind of new equal thermal technology that blowout blows to workpiece through wind-tunnel；Chassis platform surrounding is surrounded in the lower section body of heater of burner hearth workpiece
The cooling circulation pipe of a ring shape is equipped with, the cooling circulation pipe is connected by pipeline with the variable-frequency motor outside body of heater, variable-frequency electric
Machine is by the air that compresses it by heat treatment cycle curve to cooling in burner hearth.Trolley type annealing furnace of the present invention and there is knot
Structure is novel, simple, energy-conservation, while taking into account, the low, operating cost of investment is low, annealing workpiece quality is high, and production efficiency is high.Reduction production
Into effect it is notable the features such as.
Some preferred embodiments of the application have shown and described in described above, but as previously described, it should be understood that the application
Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations,
Modification and environment, and can be changed in the application contemplated scope by the technology or knowledge of above-mentioned teaching or association area
It is dynamic., then all should be appended by the application and the change and change that those skilled in the art are carried out do not depart from spirit and scope
In scope of the claims.
Claims (6)
1. a kind of trolley type annealing furnace, it is characterised in that including：Chassis (1), body of heater (4), the body of heater (4) pass through itself weight
The mode of power fastening is sealed on chassis (1)；
Motor (10) is provided with chassis (1), the motor (10) is connected with axial flow blower (5) by bead apex (11),
Workpiece (13) is placed with above axial flow blower (5)；
Backwind tube (3) laterally, is vertically equipped with respectively between workpiece (13) and the chassis sealing surface (16) of chassis (1), it is described
Laterally, the vertical backwind tube (3) laid respectively forms wind-tunnel in both center intersections, and the axial flow blower (5) is arranged on
In the wind-tunnel, the wind blown out from axial flow blower (5) passes through the wind-tunnel after-blow to workpiece (13)；
The cooling circulation pipe (2) of a ring shape is equipped with lower section, body of heater (4) in workpiece (13) around workpiece (13), this is cold
But circulation pipe (2) is connected by pipeline with the variable-frequency motor (23) outside body of heater, and variable-frequency motor (23) passes through the air that compresses it
To carrying out cooling processing in burner hearth.
2. trolley type annealing furnace according to claim 1, it is characterised in that be separately installed with use at the top of body of heater (4)
In the sensor (8) of oxygen content in detection body of heater with making to form the micro- atmosphere of micro- reduced form in body of heater to instillation liquid in body of heater
Micro- atmosphere dropper (6), one end of micro- atmosphere dropper (6) stretched into the inner cover (9) of body of heater (4), the other end and micro- gas
Atmosphere is passed through mouth (20) connection.
3. trolley type annealing furnace according to claim 2, it is characterised in that be provided with flow on micro- atmosphere dropper (6)
Count (19).
4. trolley type annealing furnace according to claim 1, it is characterised in that on the chassis sealing surface (16) of chassis (1)
Be provided with a circle groove, position correspondence furnace sealing face (15) of the groove, be placed with the groove by asbestos be made it is soft
Property seal pipe (24).
5. according to any described trolley type annealing furnaces of claim 1-4, it is characterised in that chassis (1) both sides are provided with liter
Drop machine (7), projection is provided with lift (7), and the both sides of body of heater (4) are provided with body of heater corresponding with the bump position
Locating pin (17) is lifted, the body of heater (4) realizes opening and the sealing to body of heater (4) by lift (7).
6. trolley type annealing furnace according to claim 1, it is characterised in that workpiece (13) is placed on workpiece bolster (14)
On, workpiece bolster (14) is arranged on the top of backwind tube (3).
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| CN201710672731.4A CN107287395B (en) | 2017-08-08 | 2017-08-08 | A kind of trolley type annealing furnace |
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| CN201710672731.4A CN107287395B (en) | 2017-08-08 | 2017-08-08 | A kind of trolley type annealing furnace |
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| CN107287395B CN107287395B (en) | 2018-09-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111440933A (en) * | 2020-04-16 | 2020-07-24 | 江苏东方瑞吉能源装备有限公司 | Heat insulation device for heat treatment of pressure vessel and heat treatment trolley with heat insulation device |
| CN116751958A (en) * | 2023-08-24 | 2023-09-15 | 河南大成包装材料有限公司 | Wire annealing furnace with uniform heating |
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| CN202101558U (en) * | 2010-12-28 | 2012-01-04 | 西安航天化学动力厂 | Fast cooling device of aerodynamic furnace |
| CN202519297U (en) * | 2012-03-01 | 2012-11-07 | 瓦房店市鑫海节能电炉厂 | Non-oxidation spheroidizing annealing forced air cooling and waste heat recycling device |
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| CN116751958A (en) * | 2023-08-24 | 2023-09-15 | 河南大成包装材料有限公司 | Wire annealing furnace with uniform heating |
| CN116751958B (en) * | 2023-08-24 | 2023-11-07 | 河南大成包装材料有限公司 | Wire annealing furnace with uniform heating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107287395B (en) | 2018-09-28 |
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Denomination of invention: A trolley type annealing furnace Effective date of registration: 20230911 Granted publication date: 20180928 Pledgee: CITIC Bank, Limited by Share Ltd, Chongqing branch Pledgor: CHONGQING JINKAI SPECIAL STEEL PRODUCTS Co.,Ltd. Registration number: Y2023500000067 |
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