CN101914736B - Continuous annealing furnace - Google Patents
Continuous annealing furnace Download PDFInfo
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- CN101914736B CN101914736B CN2010102544469A CN201010254446A CN101914736B CN 101914736 B CN101914736 B CN 101914736B CN 2010102544469 A CN2010102544469 A CN 2010102544469A CN 201010254446 A CN201010254446 A CN 201010254446A CN 101914736 B CN101914736 B CN 101914736B
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- burner hearth
- band
- continuous annealing
- annealing furnace
- heater
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Abstract
The invention discloses a continuous annealing furnace, which comprises a furnace body, wherein a feed inlet is arranged on the front end of the furnace body; a discharge opening is arranged on the rear end of the furnace body; a hearth in which material strips are heated is formed in the furnace body; when the furnace operates, the hearth is filled with a protective atmosphere; the front end of the hearth is provided with a tension roll I; the rear end of the hearth is provided with a tension roll II; a circulating fan assembly is arranged on the furnace body; and under the tension actions of the tension roll I and the tension roll I, the material strips floats when blown by high-speed air flow blown out by the circulating fan assembly. The furnace is simple and practical; and the furnace has the advantages of high heating speed, high efficiency, uniform heating temperature, fine grains, easily-controllable performance, complete surface, high equipment automation and the like, so demands of domestic and overseas markets can be satisfied and China-made continuous annealing furnace equipment can be realized.
Description
Technical field
The present invention relates to the Aluminum Plate and Strip HTFX, particularly a kind of continuous annealing furnace.
Background technology
China's Aluminum strip, foil are underproduce, thereby a large amount of year after year import, and the import Aluminum Plate and Strip mainly is the domestic high-precision strip goods of can not producing or seldom produce, and import high precision Aluminum Plate and Strip is that China YouSe metal industry first is used the foreign exchange rich and influential family.High-precision at home strip goods demand gap is very big, and this is not enough relevant with the high-precision strip equipment assembling of production.Continuous annealing is as one of key equipment of production high precision plates alternate product; Equipment such as continuous annealing production line machine row comprise uncoiling, stitching, tension control roll, lehre, cooling room and aligning, curl are formed; Wherein peripherals is mature equipment; The Selection and Design of stove and tensile process control are the crucial key elements of comparison on this production line, still grasp gordian technique by external producer so far, and the price that overseas equipment is expensive causes a lot of enterprises can't equip the continuous annealing furnace production line.
Domestic anneal for Aluminum Plate and Strip much all adopts common box-annealing furnace at present, and its shortcoming is a lot, is difficult to guarantee to produce high-quality Aluminum Plate and Strip, and its reason is following:
1) aluminium and aluminum alloy sheets and strips are in annealing, intensity is very low under the quenching temperature, and viscosity is bigger, are prone to each other bonding or with other contactant bonding and cause scuffing;
2) Aluminum Plate and Strip is to heat with roll coil of strip mode in common box heat treatment furnace, and heat passes to outside rolling up in the volume, along with the increase of roll coil of strip diameter by conduction gradually; Also will increase heat-up time, reaches tens hours sometimes, in long like this heat-processed; Because the volume skin is under the high temperature for a long time; The grain growth especially severe, the result causes the inside and outside crystal grain of volume seriously uneven, causes the physicals of Aluminum Plate and Strip and mechanical property inconsistent;
3), needed 3-5 days just can reach the cooling requirement with roll coil of strip mode naturally cooling; Box-annealing furnace roll coil of strip cooling problem can solve on air cushion furnace at present, and band launches cooling on the air cushion furnace, so accelerated cooling time greatly;
, not volatile in heat-processed when 4) rolling attached to lip-deep oil stain of strip material or greasy dirt, thereby stain appears, influence surface quality;
5) owing to heat-treat in batches, so efficient is low, cost is high.
Shortcoming such as just be to use in addition that the air-cushion type lehre can solve effectively that the annealing time of box-annealing furnace is long, the surface is prone to scuffing, strip surface greasy dirt, efficient are lower; But air-cushion type lehre equipment investment cost is bigger; Complex structure is not suitable for the demand of home market.Also do not have home-made aluminium strip continuous annealing furnace in the market, have vast market prospect so develop the continuous annealing furnace of suitable home market, moderate cost.
Summary of the invention
Problem to be solved by this invention just provides a kind of simple and practical continuous annealing furnace; Have that rate of heating is fast, efficient is high; Heating temperature is even, crystal grain is thin, performance is prone to control, the surface does not have scuffing, equipment automatization advantages of higher; Be fit to domestic market demand, realize the continuous annealing furnace home-made equipment.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of continuous annealing furnace is characterized in that: comprise body of heater; Front end at body of heater is provided with opening for feed; The rear end of body of heater is provided with discharge port, in body of heater, is provided with the burner hearth of heating band, charges into protective atmosphere during work in the burner hearth; The front end of burner hearth is provided with tensioning roller I; The rear end of burner hearth is provided with tensioning roller II, on body of heater, is provided with the recirculation blower assembly, and the high velocity air by the ejection of recirculation blower assembly under the tensioning of tensioning roller I and tensioning roller II blows floating band.
Further, said recirculation blower assembly comprises that the blower fan and that is fixed on the body of heater terminates at the air outlet tube on the blower fan, and the aspiration channel that terminates on the blower fan; The other end of air outlet tube is provided with blowing mouth I and blowing mouth II side by side; The other end of aspiration channel is provided with the air suction inlet, and blowing mouth I is located at the burner hearth top, and blowing mouth II is located at the burner hearth below; Band is blowed floating by the high velocity air of blowing mouth I and blowing mouth II ejection under the tensioning of tensioning roller I and tensioning roller II, and the air suction inlet is located on the burner hearth sidewall.
Further, said aspiration channel is along the hearth wall setting.The air suction inlet with the burner hearth central gas suck when aspiration channel is delivered to blower fan by hearth wall to aspiration channel in gas heat.
Further; Said burner hearth is divided into preheating section, heating zone and cooling section successively from the opening for feed to the discharge port; Cooling section is provided with induction pipe and is communicated with the aspiration channel of preheating section fan, and the hot gas that the band after blower fan will be annealed through induction pipe distributes sucks and delivers in the preheating section unannealed band is carried out preheating.Increase heat utilization efficiency, energy-conserving and environment-protective reduce cost.
Further, be connected to the inlet seal section on the said opening for feed, be connected to the exit seal section on the discharge port.Make the unlikely loss of protective atmosphere too much through inlet seal section and exit seal section.
Further, also be provided with between said discharge port and the exit seal section band is carried out quick refrigerative spray cooling system.
After adopting technique scheme, the present invention has following advantage: band rate of heating under levitated state is fast, does not have to scratch; Annealing temperature is even; Heating rapidly and evenly can access tiny and the even metal crystal structure has guaranteed that band has higher mechanical properties; Lower anisotropy, and the tangerine peel defective that occurs when having eliminated punching press.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described further:
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is the structural representation of recirculation blower assembly.
Embodiment
The structural representation of an embodiment of the present invention as illustrated in fig. 1 and 2, a kind of continuous annealing furnace comprises body of heater 1; Front end at body of heater is provided with opening for feed 11, and the rear end of body of heater is provided with discharge port 12, in body of heater, is provided with the burner hearth 2 of heating band; Charge into protective atmosphere during work in the burner hearth; The front end of burner hearth is provided with tensioning roller I13, and the rear end of burner hearth is provided with tensioning roller II14, and burner hearth is divided into preheating section 21, heating zone 22 and cooling section 23 successively from the opening for feed to the discharge port; Cooling section is provided with induction pipe and is communicated with the aspiration channel of preheating section fan, and the hot gas that the band after blower fan will be annealed through induction pipe distributes sucks and delivers in the preheating section unannealed band is carried out preheating.On body of heater, be provided with the recirculation blower assembly; Said recirculation blower assembly comprises that the blower fan 3 and that is fixed on the body of heater terminates at the air outlet tube 31 on the blower fan; And the aspiration channel 32 that terminates on the blower fan, the other end of air outlet tube is provided with blowing mouth I311 and blowing mouth II312 side by side, and the other end of aspiration channel is provided with air suction inlet 321; Blowing mouth I is located at the burner hearth top; Blowing mouth II is located at the burner hearth below, and band is blowed floating by the high velocity air of blowing mouth I and blowing mouth II ejection under the tensioning of tensioning roller I and tensioning roller II, and the air suction inlet is located on the burner hearth sidewall.Be connected to inlet seal section 4 on the opening for feed, be connected to exit seal section 5 on the discharge port, make the unlikely loss of protective atmosphere too much through inlet seal section and exit seal section.
In the foregoing description, aspiration channel is along the hearth wall setting, the air suction inlet of blower fan with the burner hearth central gas suck when aspiration channel is delivered to blower fan by hearth wall to aspiration channel in gas heat, from the blowing mouth I of blower fan and blowing mouth II, spray then, realize circulating.Between discharge port and exit seal section, also be provided with the spray cooling system 6 of accelerating the band speed of cooling.
The present invention is simple and practical, and band is not contacted with member by the effect of upper and lower hot gas flow in stove, has avoided any scratch on surface, thereby has guaranteed quality.In addition, because band is unfolded heating, the high speed hot gas flow directly blows on the band plate surface, makes attached to the rolling oil stain of strip surface to remove rapidly, prevents that strip surface is filthy, and is same, because band launches cooling, greatly reduces cooling time.In continuous annealing furnace, hot gas flow sprays to the unfolded strip surface from upper and lower both direction with the speed of 30～50 meter per seconds, and band is heated under the effect of hot gas flow, and its convective heat-transfer coefficient can reach 90～120 kilocalories/meter
2Hour ℃; Bigger 2.5～3 times than box-type furnace, so band heats in air cushion furnace rapidly and evenly, can access tiny and the even metal crystal structure; Guaranteed that band has higher mechanical properties; Lower anisotropy, and the tangerine peel defective that occurs when having eliminated punching press also can reduce and when punching press, form the metal loss that " ear " caused simultaneously.Adopt continuous annealing furnace just can organically get in touch in addition and be one according to demand and finishing unit; Directly anneal continuously, operation such as aligning, smooth, oiling, inspection, lining paper, cutting plate and buttress plate; A lot of unnecessary loading and unloading material process have been removed from; Not only guarantee the Aluminum Plate and Strip surface quality, can enhance productivity greatly again simultaneously.
Except that above-mentioned preferred embodiment, the present invention also has other embodiment, and those skilled in the art can make various changes and distortion according to the present invention, only otherwise break away from spirit of the present invention, all should belong to the defined scope of accompanying claims of the present invention.
Claims (5)
1. continuous annealing furnace is characterized in that: comprise body of heater (1), be provided with opening for feed (11) at the front end of body of heater; The rear end of body of heater is provided with discharge port (12), in body of heater, is provided with the burner hearth (2) of heating band, charges into protective atmosphere during work in the burner hearth; The front end of burner hearth is provided with tensioning roller I (13); The rear end of burner hearth is provided with tensioning roller II (14), on body of heater, is provided with recirculation blower assembly (3), and the high velocity air by the ejection of recirculation blower assembly under the tensioning of tensioning roller I and tensioning roller II blows floating band; Said recirculation blower assembly comprises that the blower fan (30) and that is fixed on the body of heater terminates at the air outlet tube (31) on the blower fan; And the aspiration channel (32) that terminates on the blower fan, the other end of air outlet tube is provided with blowing mouth I (311) and blowing mouth II (312) side by side, and the other end of aspiration channel is provided with air suction inlet (321); Blowing mouth I is located at the burner hearth top; Blowing mouth II is located at the burner hearth below, and band is blowed floating by the high velocity air of blowing mouth I and blowing mouth II ejection under the tensioning of tensioning roller I and tensioning roller II, and the air suction inlet is located on the burner hearth sidewall.
2. a kind of continuous annealing furnace according to claim 1 is characterized in that: said aspiration channel is along the hearth wall setting.
3. a kind of continuous annealing furnace according to claim 1; It is characterized in that: said burner hearth is divided into preheating section (21), heating zone (22) and cooling section (23) successively from the opening for feed to the discharge port; Cooling section is provided with induction pipe and is communicated with the aspiration channel of preheating section fan, and the hot gas that the band after blower fan will be annealed through induction pipe distributes sucks and delivers in the preheating section unannealed band is carried out preheating.
4. a kind of continuous annealing furnace according to claim 1 is characterized in that: be connected to inlet seal section (4) on the said opening for feed, be connected to exit seal section (5) on the discharge port.
5. a kind of continuous annealing furnace according to claim 4 is characterized in that: also be provided with between said discharge port and the exit seal section band is carried out quick refrigerative spray cooling system (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102544469A CN101914736B (en) | 2010-08-12 | 2010-08-12 | Continuous annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102544469A CN101914736B (en) | 2010-08-12 | 2010-08-12 | Continuous annealing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101914736A CN101914736A (en) | 2010-12-15 |
| CN101914736B true CN101914736B (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102544469A Expired - Fee Related CN101914736B (en) | 2010-08-12 | 2010-08-12 | Continuous annealing furnace |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103551392B (en) * | 2013-11-22 | 2015-10-07 | 宝钢工程技术集团有限公司 | For transmission device and the drive method thereof of cold rolled strip steel production line |
| CN107699663A (en) * | 2017-10-23 | 2018-02-16 | 铜陵市业永兴工贸有限责任公司 | A kind of copper wire annealing heat abstractor |
| DE102018100842B3 (en) | 2018-01-16 | 2019-05-09 | Ebner Industrieofenbau Gmbh | Continuous furnace for aluminum strips |
| CN110760767B (en) * | 2019-10-31 | 2020-08-14 | 重庆中铝华西铝业有限公司 | Annealing and oil removing method for large-width double-sided polished aluminum foil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH624460A5 (en) * | 1977-05-24 | 1981-07-31 | Gautschi Electro Fours Sa | |
| JPH0730413B2 (en) * | 1992-07-24 | 1995-04-05 | 中外炉工業株式会社 | Aluminum strip heat treatment method and continuous heat treatment furnace |
| CN2915880Y (en) * | 2006-05-31 | 2007-06-27 | 福建方明钢铁有限公司 | Energy-saving type continuous annealing oven of strip steel continuous hot galvanizing assembly line |
| CN201065425Y (en) * | 2007-07-19 | 2008-05-28 | 鞍钢股份有限公司 | Device for making steel belt of continuous annealing furnace suspending |
| CN201186943Y (en) * | 2007-12-01 | 2009-01-28 | 徐建永 | Stainless steel band horizontal type continuous muffleless bright annealing equipment |
| CN201785465U (en) * | 2010-08-12 | 2011-04-06 | 浙江浩大工业炉有限公司 | Continuous annealing furnace |
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- 2010-08-12 CN CN2010102544469A patent/CN101914736B/en not_active Expired - Fee Related
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| CN101914736A (en) | 2010-12-15 |
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Granted publication date: 20120509 Termination date: 20120812 |