CN116463491A - Continuous heat treatment equipment for aluminum strips - Google Patents

Continuous heat treatment equipment for aluminum strips Download PDF

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Publication number
CN116463491A
CN116463491A CN202310312330.3A CN202310312330A CN116463491A CN 116463491 A CN116463491 A CN 116463491A CN 202310312330 A CN202310312330 A CN 202310312330A CN 116463491 A CN116463491 A CN 116463491A
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CN
China
Prior art keywords
box
heat treatment
heating
spray
spray box
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Pending
Application number
CN202310312330.3A
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Chinese (zh)
Inventor
罗伯特·艾伯纳
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EBNER INDUSTRIAL FURNACES (TAICANG) CO LTD
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EBNER INDUSTRIAL FURNACES (TAICANG) CO LTD
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Priority to CN202310312330.3A priority Critical patent/CN116463491A/en
Publication of CN116463491A publication Critical patent/CN116463491A/en
Pending legal-status Critical Current

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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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/562—Details
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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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 Strip Materials And Filament Materials (AREA)

Abstract

The invention discloses continuous heat treatment equipment for an aluminum strip, which sequentially comprises a heating section and a cooling section, wherein the heating section comprises one or more heating units, the cooling section comprises one or more cooling units, the heating units comprise a first upper spray box, a first lower spray box and a first circulating fan for conveying heating gas into the first upper spray box and the first lower spray box, and the first circulating fan is arranged on the side surface of the heating section and corresponds to the middle position of the first upper spray box and the middle position of the first lower spray box. According to the continuous heat treatment equipment for the aluminum strips, in the heating unit, one circulating fan is adopted to supply air to the upper spraying box and the lower spraying box simultaneously, so that the number of fans is reduced, the cost and the maintenance and overhaul cost are reduced, the hot air flow velocity of the upper spraying box and the lower spraying box can be synchronously regulated, and the regulating workload of the fans and the upper spraying box and the lower spraying box is reduced.

Description

Continuous heat treatment equipment for aluminum strips
Technical Field
The invention belongs to the technical field of metal heat treatment, and particularly relates to continuous annealing heat treatment equipment applied to an aluminum alloy strip.
Background
The heat treatment of the aluminum strip, particularly the annealing treatment of the aluminum strip, is a very important process in the aluminum processing link, and plays a very important role in improving the distribution of the second phase, reducing the solid solubility of Si and Fe, particularly the solid solubility of Si, improving the microstructure of the aluminum strip and further rolling.
The most main mode of the current aluminum strip annealing treatment is that the aluminum strip is annealed in a box-type furnace in a coiled manner, the operation is simple and convenient, and the thickness of the aluminum coil is not required. But the annealing cycle is very long, typically 20-30 hours. Because the annealing heat transfer is from the outside to the inside of the aluminum coil, all parts of the aluminum coil are in different annealing states at the same time, and the performance consistency of the aluminum coil after annealing is poor. The surface is provided with an annealing oil spot, and the end part of the aluminum coil is bonded. And box annealing is an intermittent heat treatment mode, and partial energy sources are consumed in furnace lining and other materials when the temperature is frequently increased and decreased, so that the heat efficiency is relatively low. More importantly, the cooling effect of the box furnace is very low, the capability of generating fine grains is limited, and the heat treatment of some products in the box furnace is limited.
Another way of heat treatment of aluminum strips is a CASH line, i.e. an air cushion type aluminum strip continuous solution treatment line, abbreviated as an air cushion furnace. The aluminum strip continuously passes through the heat treatment line in an expanded suspension within the air cushion furnace. The upper and lower parts of the treatment furnace are provided with circulating fans, so that on one hand, the aluminum strips are suspended, and on the other hand, strong convection heat transfer is realized. Besides the heating section, the air cushion furnace is also provided with water quenching and air quenching, namely solution treatment, which is specially used for heat treatment of alloys of 2 series, 5 series, 6 series, 7 series and the like, and the materials are used for high-end aluminum materials in the aspects of automobiles and aviation. It is conceivable that such a heat treatment line is very invested in annealing treatment for 1-, 3-, 5-, 8-series alloys, which is uneconomical with an air cushion furnace.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide an improved continuous heat treatment apparatus for aluminum strips, which overcomes the drawbacks of the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an aluminium strip continuous heat treatment equipment, includes heating section and cooling section in proper order, the heating section includes one or more heating unit, the cooling section includes one or more cooling unit, the heating unit includes first upward spout case, first down spout case and be used for to first upward spout case, first down spout the incasement and carry the first circulating fan of heating gas, first circulating fan sets up the side of heating section, and be corresponding to first upward spout case, first intermediate position of spouting the case down.
According to some preferred embodiments of the invention, the heating unit comprises a combustion-supporting system, and the furnace gas enters the first upper spray box and the first lower spray box after being heated by a burner of the combustion-supporting system and passing through a circulating fan.
According to some preferred embodiments of the invention, the heating section comprises a first box body, the heating unit is arranged in the first box body, and a first exhaust air duct communicated with the space in the first box body is arranged on the first box body.
According to some preferred embodiments of the present invention, the first upper spray tank and the first lower spray tank are provided with a plurality of groups of spray heads and/or a plurality of spray nozzles along respective length extending directions; the spray heads and/or the spray nozzles on the first upper spray box face to the first lower spray box, and the spray heads and/or the spray nozzles on the first lower spray box face to the first upper spray box.
According to some preferred embodiments of the invention, the spray heads or nozzles are evenly spaced on the spray box.
According to some preferred embodiments of the invention, the first upper spray boxes are arranged between adjacent first lower spray boxes.
According to some preferred embodiments of the invention, the heating temperature of the heating section is 450-650 ℃.
According to some preferred embodiments of the present invention, the cooling unit includes a second upper spray tank, a second lower spray tank, and a second circulation fan and a third circulation fan for delivering cooling gas into the second upper spray tank and the second lower spray tank, respectively. The upper and lower spray boxes are supplied with air by the independent fans, so that the height of the whole unit can be reduced, and the investment is reduced.
According to some preferred embodiments of the invention, the cooling section includes a second housing, the cooling unit is disposed in the second housing, and a second exhaust duct is disposed on the second housing and is in communication with the space in the second housing.
According to some preferred embodiments of the invention, the second circulation fan and the third circulation fan are disposed on both sides of the second casing, respectively.
According to some preferred embodiments of the invention, a forehearth apparatus is provided at the forward end of the heating section and a post-hearth apparatus is provided at the aft end of the cooling section.
According to some preferred embodiments of the invention, the thickness of the aluminium strip is 0.5-3mm.
Compared with the prior art, the invention has the following advantages: according to the continuous heat treatment equipment for the aluminum strips, in the heating unit, one circulating fan is adopted to supply air to the upper spraying box and the lower spraying box simultaneously, so that the number of fans is reduced, the cost and the maintenance and overhaul cost are reduced, the hot air flow velocity of the upper spraying box and the lower spraying box can be synchronously regulated, and the regulating workload of the fans and the upper spraying box and the lower spraying box is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a continuous heat treatment apparatus for aluminum strips according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a heating unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a cooling unit according to an embodiment of the present invention;
FIG. 4 is a graph showing the temperature change of the heating section in the embodiment;
in the drawing, a heating section 100-a first upper spray box, a first lower spray box 102-a first circulating fan 103-a first box body 104-a first box body 105-a combustion-supporting system 106-a first discharge air duct 200-a cooling section 201-a second upper spray box 202-a second lower spray box 203-a second circulating fan 204-a second box body 205-a second discharge air duct 206-a third circulating fan 300-a stokehold device 400-a post-furnace device.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
As shown in fig. 1 to 3, the continuous heat treatment apparatus for aluminum strip in this embodiment sequentially includes a forehearth apparatus 300 such as an uncoiler or the like, a heating section 100, a cooling section 200, a posthearth apparatus 400 such as a straightener or the like, and a metal strip to be treated can be continuously passed through the heating section 100 and the cooling section 200 in a conveying direction, and the metal material can be conveyed in a suspended state without contact. The aluminum strip continuous heat treatment equipment in the embodiment is used for carrying out recrystallization annealing continuous annealing and cooling treatment on the aluminum alloy cold-rolled aluminum strip strengthened by non-heat treatment; is particularly suitable for the aluminum alloy belts of 1 series, 3 series, 5 series and 8 series, and the thickness of the aluminum alloy belts is 0.5-3mm.
The heating section 100 comprises a first box 104 and one or more heating units arranged in the first box 104, wherein a first exhaust air duct 106 communicated with the space in the first box 104 is arranged on the first box 104; the heating temperature of the heating section 100 is 450-650 deg.c, which is appropriately adjusted according to the alloy material.
The cooling section 200 includes a second casing 204 and one or more cooling units disposed in the second casing 204, and a second exhaust duct 205 communicating with a space in the second casing 204 is disposed on the second casing 204. The heating unit and the cooling unit are of a modular structure, and the number of unit modules can be increased or decreased according to the speed of the heat treatment.
As shown in fig. 2, each heating unit includes a combustion supporting system 105, a first upper tank 101, a first lower tank 102, and a first circulating fan 103 for feeding heated gas into the first upper tank 101, the first lower tank 102, the first upper tank 101 being disposed between adjacent first lower tanks 102. The first circulation fan 103 is disposed at a side of the heating section 100 and corresponds to a middle position of the first upper spray box 101 and the first lower spray box 102. By adopting the arrangement mode, the distances of the air flowing through the first upper and lower spray boxes are the same, the loss along the journey is the same, the pressures of the first upper and lower spray boxes are the same, and the air flow rates in the spray holes are the same. For different thicknesses and different alloys (different solid solution temperatures), the floating height of the aluminum strip is relatively easier to control, so that the product quality is kept stable.
After being heated by the burner of the combustion-supporting system 105, the furnace gas enters the first upper spray box 101 and the first lower spray box 102 after passing through the circulating fan. In the heating unit, the circulating fan is adopted to supply air to the upper spray box and the lower spray box simultaneously, so that the number of the fans is reduced, the cost and the maintenance and overhaul cost are reduced, the hot air flow velocity of the upper spray box and the lower spray box can be synchronously regulated, and the workload of regulation of the fans and the upper spray box and the lower spray box is reduced.
A plurality of groups of spray heads and/or a plurality of spray nozzles are arranged on the first upper spray box 101 and the first lower spray box 102 along the respective length extending directions; the spray heads and/or nozzles on the first upper spray box 101 are directed towards the first lower spray box 102, and the spray heads and/or nozzles on the first lower spray box 102 are directed towards the first upper spray box 101. The spray heads or the spray nozzles are uniformly distributed on the spray box at intervals.
Specifically, as shown in fig. 2, the furnace gas is heated by the burner of the combustion supporting system 105, and the hot furnace gas is pressurized by the first circulating fan 103 through the diversion pressurizing cavity and then distributed to the first upper spray box 101 and the first lower spray box 102 through the diversion system. The first upper and lower spray boxes are provided with a plurality of groups of spray heads and a plurality of spray nozzles, hot air can be blown onto the aluminum strip from the vertical directions of the upper side and the lower side of the aluminum strip through the spray nozzles, the aluminum strip is suspended, strong convection heat transfer is realized, the aluminum strip can be rapidly and uniformly heated, and the heat transfer rate can be adjusted by adjusting the fan rate. The design structure and the arrangement mode can ensure that sine wave is generated when the aluminum strip passes through the belt, and the aluminum strip does not generate too large vibration and deviation. Meanwhile, the circulating fans with the side edges horizontally arranged can synchronously adjust the flow velocity of hot air of the first upper and lower spray boxes, so that the workload of adjusting the circulating fans and the first upper and lower spray boxes is reduced; the number of fans is reduced, the lower fans are not required to be arranged by lifting the whole furnace body, and the construction investment of a treatment line is reduced; meanwhile, the disassembly and the maintenance of the fan are very convenient.
As shown in fig. 3, each cooling unit includes a second upper spray tank 201, a second lower spray tank 202, and a second circulation fan 203 and a third circulation fan 206 for delivering cooling gas into the second upper spray tank 201, the second lower spray tank 202, respectively. The cooling section 200 is also a structure designed by adopting a module, and the number of cooling unit modules can be increased or decreased according to the cooling speed requirement and the temperature of the aluminum strip after discharging. The second circulation fan 203 and the third circulation fan 206 are disposed at both sides of the second casing 204, respectively.
Specifically, as shown in fig. 3, in the cooling unit, two cold air circulation fans arranged on the left and right sides of the cooling second box body pass air to the second upper and lower spray boxes through the diversion chamber. And the second upper and lower spray boxes are also provided with a plurality of groups of spray pipes and spray heads, and cold air can be blown onto the aluminum strip from the vertical directions of the upper side and the lower side of the aluminum strip through a plurality of spray nozzles to suspend the aluminum strip and realize strong convection heat exchange, so that the aluminum strip can be rapidly and uniformly cooled to a certain temperature.
In the cooling section 200, a combination of water cooling and air cooling may be used to increase the cooling rate. In this case, a water cooling nozzle is added to the cooling section 200, and the nozzle is a fan-shaped nozzle. Meanwhile, the horizontally arranged cold circulation fans in the embodiment do not need to be integrally lifted to arrange the lower fans, so that the construction investment of the treatment line is reduced. Meanwhile, the disassembly and the maintenance of the fan are very convenient.
In a particular manufacturing process, the cold rolled alloy aluminum strip is passed through a forehearth apparatus 300, such as an uncoiler, to the heating section 100 of the high temperature rapid thermal processing section. The alloy is heated above the recrystallization temperature for annealing. Because the heating speed of the aluminum strip is high, the corresponding crystallization temperature can be increased. At high recrystallization temperatures, the number of simultaneous nucleation also increases, resulting in finer grains. While in the subsequent cooling section 200 the strip is rapidly cooled to a temperature at which grain growth is avoided. The fine grains are preserved, and the comprehensive mechanical property of the material is improved after heat treatment. The aluminum strip heated to the desired annealing temperature enters the air cooling section 200.
After leaving the heat treatment section, the heat treated aluminum strip enters a post furnace apparatus 400, such as straightening, and is reeled on a reeler to form a roll.
Implementation case:
fig. 4 is a temperature change curve of the heating section 100 when the heating section 100 includes 3 heating units. The annealed alloy was AA3003 aluminium, 0.5mm thick. The aluminum strip is passed through the heating section 100 at a speed of 40m/min and heated from 30 ℃ to 450 ℃ for about 20 seconds, with a throughput of up to 5.3 tons per hour.
The strip temperature is reduced to 60-80 c in a subsequent cooling section 200 containing 5 cooling units.
As previously described, the heating unit and the cooling unit may be increased or decreased depending on the hour throughput, the thickness of the treated alloy and strip, and the temperature after cooling.
The continuous heat treatment equipment for the aluminum strip in the embodiment has the following beneficial effects:
1. the annealing period is greatly shortened, and the heat treatment efficiency is improved
2 improving the comprehensive mechanical property of the aluminum belt
The aluminum strip is continuously and contactlessly subjected to heat treatment through an annealing furnace in a spreading mode, and the method is a high-temperature rapid heat treatment mode. Under the condition of high temperature and high speed, the recrystallization temperature of the aluminum belt is improved, the nucleation rate is increased, the crystal grains are fine and uniform, and the mechanical property of the aluminum belt is improved.
3. Reducing pinhole rate
As for a 0.006mm double zero aluminum foil, it is a very common situation to create pinholes. The generation of pinholes affects greatly the structural properties of metals in addition to chemical components such as Si, fe/Si, metallurgical quality (H content, slag inclusion), plate shape, etc. From the perspective of recrystallization annealing, it is clearly important that the uniform grain size is uniform, the grains are uniformly deformed and coordinated, no shearing stress is generated between the grains, and a crack source is avoided. On the other hand, at higher temperatures in the short term, more alpha (AlFeSi) terms are formed, and at the same time conversion of alpha (AlFeSi) to beta (AlFeSi) also occurs. And α (AlFeSi) is a granular structure, which is a very ideal structure for further aluminum foil rolling. In the latter half of FAST, the air cooling is intensified, and as the temperature is reduced, si is desolventized from the matrix to form fine particles, so that the hardening effect of Si is reduced, and the generation of pinholes is reduced.
4. Reducing broken belt aluminum
Strip breakage is also a very common problem in the rolling of double zero aluminium foils. When the tension during rolling is greater than the yield strength of the aluminum foil, a strip break occurs. When there is a crack such as a pinhole, the belt is more easily broken. As described above, the continuous heat treatment can reduce the occurrence of pinholes, and avoid the possibility of breakage of the tape. Meanwhile, by adopting the continuous annealing line, the comprehensive mechanical property is higher due to fine grains, and the strip is not easy to break during foil rolling.
5. Improving the yield
The pinhole rate and the belt breakage rate are reduced, and the yield of the product is correspondingly improved.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. An aluminum strip continuous heat treatment device is characterized in that: the cooling device comprises a heating section and a cooling section, wherein the heating section comprises one or more heating units, the cooling section comprises one or more cooling units, and the heating units comprise a first upper spray box, a first lower spray box and a first circulating fan used for conveying heating gas into the first upper spray box and the first lower spray box, and the first circulating fan is arranged on the side face of the heating section and corresponds to the middle position of the first upper spray box and the middle position of the first lower spray box.
2. The aluminum strip continuous heat treatment apparatus according to claim 1, wherein: the heating unit comprises a combustion-supporting system, and furnace gas enters the first upper spray box and the first lower spray box after being heated by a burner of the combustion-supporting system and passing through a circulating fan.
3. The aluminum strip continuous heat treatment apparatus according to claim 1, wherein: the heating section comprises a first box body, the heating unit is arranged in the first box body, and a first exhaust air duct communicated with the space in the first box body is arranged on the first box body.
4. The aluminum strip continuous heat treatment apparatus according to claim 1, wherein: a plurality of groups of spray heads and/or a plurality of spray nozzles are arranged on the first upper spray box and the first lower spray box along the respective length extending directions; the spray heads and/or the spray nozzles on the first upper spray box face to the first lower spray box, and the spray heads and/or the spray nozzles on the first lower spray box face to the first upper spray box.
5. The aluminum strip continuous heat treatment apparatus according to claim 1, wherein: the first upper spray boxes are arranged between the adjacent first lower spray boxes.
6. The aluminum strip continuous heat treatment apparatus according to claim 1, wherein: the heating temperature of the heating section is 450-650 ℃.
7. The aluminum strip continuous heat treatment apparatus according to any one of claims 1 to 6, wherein: the cooling unit comprises a second upper spray box, a second lower spray box, and a second circulating fan and a third circulating fan which are respectively used for conveying cooling gas into the second upper spray box and the second lower spray box.
8. The aluminum strip continuous heat treatment apparatus according to claim 7, wherein: the cooling section comprises a second box body, the cooling unit is arranged in the second box body, and a second exhaust air duct communicated with the space in the second box body is arranged on the second box body.
9. The aluminum strip continuous heat treatment apparatus according to claim 8, wherein: the second circulating fan and the third circulating fan are respectively arranged on two sides of the second box body.
10. The aluminum strip continuous heat treatment apparatus according to claim 1, wherein: comprises a stokehold device arranged at the front end of the heating section and a post-stokehold device arranged at the rear end of the cooling section.
CN202310312330.3A 2023-03-28 2023-03-28 Continuous heat treatment equipment for aluminum strips Pending CN116463491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310312330.3A CN116463491A (en) 2023-03-28 2023-03-28 Continuous heat treatment equipment for aluminum strips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310312330.3A CN116463491A (en) 2023-03-28 2023-03-28 Continuous heat treatment equipment for aluminum strips

Publications (1)

Publication Number Publication Date
CN116463491A true CN116463491A (en) 2023-07-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310312330.3A Pending CN116463491A (en) 2023-03-28 2023-03-28 Continuous heat treatment equipment for aluminum strips

Country Status (1)

Country Link
CN (1) CN116463491A (en)

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