CN213388819U - Continuous annealing system for aluminum plate - Google Patents
Continuous annealing system for aluminum plate Download PDFInfo
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- CN213388819U CN213388819U CN202021605641.7U CN202021605641U CN213388819U CN 213388819 U CN213388819 U CN 213388819U CN 202021605641 U CN202021605641 U CN 202021605641U CN 213388819 U CN213388819 U CN 213388819U
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Abstract
The utility model provides an aluminum plate continuous annealing system, its system includes: the method comprises the following steps: the first temperature-raising area, the second temperature-raising area, the heat-preserving area, the temperature-reducing area and the drying area are sequentially connected along a conveying direction; the first heating area is provided with a plurality of roller body units with first heating rollers, and the first heating rollers heat the aluminum plate to 280-320 ℃; the second heating area is provided with a plurality of roller body units with second heating rollers, the temperature of the second heating rollers is higher than that of the first heating rollers, and the second heating rollers heat the aluminum plate to 380-420 ℃; the heat preservation area is equipped with a plurality of roll body units that have the third warming mill, and the cooling zone is equipped with a cooling trough that has the water-cooling roller, and first warming mill, second warming mill, third warming mill and water-cooling roller constitute aluminum plate annealing passageway jointly, introduce the cooling trough with aluminum plate and cool down. The utility model has fast heat transfer speed and high production efficiency; uniform temperature, good product consistency and low energy consumption.
Description
Technical Field
The utility model relates to a sheet metal annealing field, specifically speaking relates to aluminum plate continuous annealing system.
Background
At present, most of the aluminum plate production plants in China adopt batch annealing processes (hood-type annealing furnaces, box-type annealing furnaces, trolley-type annealing furnaces and the like), and only few plant production lines adopt continuous annealing processes. The existing continuous annealing mainly adopts a continuous annealing unit to heat the temperature in a furnace to a process temperature by adopting gas heating or resistance heating. Compared with the batch annealing process, the product quality consistency of the continuous annealing is good, and the production speed is greatly improved. Therefore, the continuous annealing process is more suitable for large-scale continuous production. However, the technology of the existing continuous annealing line is mainly monopolized by a few foreign enterprises (such as the Ebner company of austria), and the price is very high, so that the market popularization is difficult.
Besides the price, the domestic current continuous annealing production line still has great promotion space on the heating mode. No matter gas heating or resistance heating, the air in the furnace is heated, and then the heat is transferred to the aluminum plate by the air in a radiation and convection mode, so that the heat utilization efficiency of the current continuous annealing production line is low, the temperature uniformity on the aluminum plate is not good enough, and the consistency of the quality of products is further influenced. In view of this, the utility model provides an aluminum plate continuous annealing system.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide an aluminum plate continuous annealing system, which overcomes the difficulties in the prior art, and has high heat transfer speed and high production efficiency; uniform temperature, good product consistency and low energy consumption.
An embodiment of the utility model provides an aluminum plate continuous annealing system, include: the first temperature-raising area, the second temperature-raising area, the heat-preserving area, the temperature-reducing area and the drying area are sequentially connected along a conveying direction;
the first heating area is provided with a plurality of roller body units with first heating rollers, and the first heating rollers heat the aluminum plate to 280-320 ℃;
the second heating area is provided with a plurality of roller body units with second heating rollers, the temperature of the second heating rollers is higher than that of the first heating rollers, and the second heating rollers heat the aluminum plate to 380-420 ℃;
the holding section is provided with a plurality of roller units having a third heating roller,
the cooling area is provided with a cooling water tank with a water-cooling roller, the first heating roller, the second heating roller, the third heating roller and the water-cooling roller jointly form an aluminum plate annealing channel, and the aluminum plate is introduced into the cooling water tank to be cooled.
Preferably, the roller unit includes:
a base plate;
two side walls vertical to the bottom plate;
the heating roller is pivoted between the two side walls, and the roller surface of the heating roller tensions the aluminum plate;
the two first gears are coaxial with the heating roller and are respectively arranged at two ends of the heating roller;
and the supporting assembly comprises a plurality of supporting rods parallel to the heating roller, the supporting rods surround the periphery of one side of the heating roller to form a supporting surface positioned above the roller surface locally, and two ends of each supporting rod are connected to the first gear respectively.
Preferably, the roller unit further includes:
the second gear is meshed with the two first gears respectively;
and the motor drives the first gear to rotate through the second gear, and a supporting surface formed by the supporting component rotates around the heating roller along with the rotation of the first gear.
Preferably, when the supporting assembly is located at a side where the heating roller contacts the aluminum plate, the supporting surface formed by the supporting rod separates the aluminum plate from the roller surface of the heating roller, and the aluminum plate does not contact the roller surface of the heating roller.
Preferably, when the supporting component is positioned on the side of the heating roller, which faces away from the aluminum plate, the roller surface of the heating roller is in contact with the aluminum plate surface and tensions the aluminum plate.
Preferably, each roller unit includes an independent temperature sensor.
Preferably, each roller unit is in transmission connection with an independent motor.
Preferably, the first temperature rise region is provided with four roller body units, and each roller body unit is provided with a first heating roller;
the second heating area is provided with four roller body units, and each roller body unit is provided with a second heating roller;
the heat preservation area is provided with twenty-two roller body units.
Preferably, the drying zone is provided with a hot air assembly.
The embodiment of the utility model provides a still provide an aluminum plate continuous annealing method, adopt such as above-mentioned aluminum plate continuous annealing system, include following steps:
heating an aluminum plate to 280 ℃ to 320 ℃ through a first temperature rise zone;
heating the aluminum plate to 380 to 420 ℃ through a second temperature rising zone;
heating the aluminum plate to a quenching temperature range of 530 ℃ to 550 ℃ through a heat preservation area;
cooling the aluminum plate by a cooling water tank of a cooling area, wherein the temperature range of the cooling water is 30-50 ℃, and the temperature range of the aluminum plate leaving the cooling water tank is 80-120 ℃;
and drying the moisture on the surface of the aluminum plate through a drying area.
As mentioned above, the utility model discloses an aluminum plate continuous annealing system adopts the warming mill as the heat source, and aluminum plate's heat comes from the roller, transmits to the material through the mode of conduction on. The utility model discloses a this kind of heating methods main advantage lies in: the heat transfer speed is high, and the production efficiency is high; the temperature is uniform, and the product consistency is good; the energy consumption is low, and the continuous annealing furnace has more production benefits than the conventional continuous annealing furnace.
Drawings
Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a schematic view of the continuous annealing system for aluminum sheets of the present invention;
FIG. 2 is a schematic diagram of the arrangement of roller units in the continuous annealing system for aluminum plates according to the present invention;
FIG. 3 is a perspective view of the roller unit of the present invention;
FIG. 4 is a cross-sectional view of a cooling water tank according to the present invention;
FIG. 5 is a schematic view of the aluminum plate isolation during the start-up of the aluminum plate continuous annealing system of the present invention;
FIG. 6 is a schematic diagram of the aluminum plate fitting process when the aluminum plate continuous annealing system of the present invention is started;
FIG. 7 is a schematic diagram of the fitting state of the aluminum plate when the aluminum plate continuous annealing system of the present invention is started; and
fig. 8 is a flow chart of the method for continuously annealing an aluminum sheet according to the present invention.
Reference numerals
10 first temperature rising zone
20 second temperature rising zone
30 heat preservation area
40 cooling zone
50 drying area
11 first heating roller
12 roll surface
13 side wall
14 support assembly
15 first gear
16 electric machine
17 bottom plate
18 second gear
2 second heating roller
3 third heating roller
4 Cooling water tank
41 water cooling roller
5 Hot air component
7 aluminum plate
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 1 is a schematic view of the aluminum plate continuous annealing system of the present invention. Fig. 2 is a schematic diagram of the arrangement of the roller units in the aluminum plate continuous annealing system of the present invention. Fig. 3 is a perspective view of the roller unit of the present invention. Fig. 4 is a sectional view of the cooling water tank of the present invention. As shown in fig. 1 to 4, the aluminum plate continuous annealing system of the present invention comprises: the device comprises a first temperature-raising area 10, a second temperature-raising area 20, a heat-preserving area 30, a temperature-reducing area 40 and a drying area 50 which are connected in sequence along a conveying direction. The first temperature-raising section 10 is provided with a plurality of roller units having first heating rollers 11, the first heating rollers 11 heating the temperature of the aluminum plate 7 to 280 ℃ to 320 ℃, for example: 280 deg.C, 285 deg.C, 290 deg.C, 295 deg.C, 300 deg.C, 305 deg.C, 310 deg.C, 315 deg.C, 320 deg.C, but not limited thereto. First heated roller 11 heats aluminum sheet 7 at a temperature of preferably 300 ℃. The second temperature-raising section 20 is provided with a plurality of roller units having the second heating roller 2, the temperature of the second heating roller 2 being higher than that of the first heating roller 11, the second heating roller 2 heating the aluminum plate 7 at 380 ℃ to 420 ℃, for example: 380 deg.C, 385 deg.C, 390 deg.C, 395 deg.C, 400 deg.C, 405 deg.C, 410 deg.C, 415 deg.C, 420 deg.C, but not limited thereto. The second heating roller 2 heats the aluminum plate 7 at a temperature of preferably 400 ℃. The warming zone 30 is provided with a plurality of roller units having the third heating roller 3. The cooling area 40 is provided with a cooling water tank 4 with a water cooling roller 41, the first heating roller 11, the second heating roller 2, the third heating roller 3 and the water cooling roller 41 jointly form an aluminum plate annealing channel, and the aluminum plate is introduced into the cooling water tank 4 for cooling.
The roller unit in this embodiment includes: a base plate 17, two side walls 13, a heating roller, a support member 14, a first gear 15, a motor 16, and a second gear 18. The two side walls 13 are perpendicular to the bottom plate 17. The heating roller is pivoted between two side walls 13, and the roller surface 12 of the heating roller tensions the aluminum sheet 7. The two first gears 15 are coaxial with the heating roller and are respectively disposed at both ends of the heating roller. The supporting member 14 includes a plurality of supporting rods parallel to the heating roller, which surround the periphery of one side of the heating roller to form a supporting surface above the partial roller surface 12, and both ends of the supporting rods are respectively connected to the first gears 15. The second gears 18 engage with the first gears 15, respectively. The motor 16 drives the first gear 15 to rotate through the second gear 18, and the supporting surface formed by the supporting member 14 rotates around the heating roller as the first gear 15 rotates. When the support member 14 is positioned at a side of the heating roller contacting the aluminum sheet 7, the support bar forms a support surface separating the aluminum sheet 7 from the roller surface 12 of the heating roller, and the aluminum sheet 7 does not contact the roller surface 12 of the heating roller. When the support member 14 is positioned on the side of the heating roller facing away from the aluminum sheet 7, the roller surface 12 of the heating roller comes into surface contact with the aluminum sheet 7 and tensions the aluminum sheet 7.
In a preferred embodiment, each roller unit comprises a separate temperature sensor.
In a preferred scheme, each roller unit is connected with an independent motor for transmission.
In a preferred embodiment, the first heating zone 10 is provided with four roller units, each provided with a first heating roller 11. The second warming-up zone 20 is provided with four roller body units, each of which is provided with a second heating roller 2. The holding section 30 is provided with twenty-two roller units.
In a preferred embodiment, the drying zone 50 is provided with a hot air assembly 5.
The whole furnace shell of the utility model is made of 304 stainless steel and is filled with rock wool heat-insulating material; each roller is independently driven by a servo motor to ensure that the linear speed is strictly consistent and the friction between the aluminum plate and the roller is reduced; each roller is provided with a supporting device, so that the aluminum plate is not in direct contact with the roller when the machine is started, and the roller can rotate independently, thereby achieving a stable process state in a short time when the machine is started, and reducing the waste of materials; all be equipped with a plurality of temperature detection sensor on every roller, can in time transmit the switch board with the signal, the switch board is according to predetermined procedure, adjusts the heating state at any time, ensures that aluminum plate temperature is even.
When the roll body is preheated, the aluminum plate, the metal strip, is already worn, the roll body is kept rotating during preheating, and if the temperature is too high, the material is damaged. In another example, in the starting process of the product, the machine is stopped midway, the aluminum plate cannot be contacted with the roller surface for a long time, and the contact between the aluminum plate and the roller surface is caused, so that the heat treatment effect of the aluminum plate is damaged. The utility model provides a supporting component 14 mainly plays when the start, and when the warming mill did not reach preset temperature, with the isolated effect of aluminum plate 7 and warming mill. Fig. 5 is a schematic diagram of the isolation of the aluminum plate when the aluminum plate continuous annealing system of the present invention is started. As shown in FIG. 5, taking the first heating roller 11 as an example, when the aluminum plate continuous annealing system is just started, the temperature of the first heating roller 11 has not reached the preset temperature, and at this time, when the supporting member 14 is located at the side of the heating roller contacting the aluminum plate 7, the supporting surface formed by the supporting rods separates the aluminum plate 7 from the roller surface 12 of the heating roller, and the aluminum plate 7 does not contact the roller surface 12 of the heating roller. When the support member 14 is positioned on the side of the heating roller facing away from the aluminum sheet 7, the roller surface 12 of the heating roller comes into surface contact with the aluminum sheet 7 and tensions the aluminum sheet 7.
Fig. 6 is a schematic diagram of the aluminum plate fitting process when the aluminum plate continuous annealing system of the present invention is started. As shown in fig. 6, until the roll surface 12 of the heating roll reaches a predetermined temperature, the motor 16 drives the first gear 15 to rotate through the second gear 18, and the supporting surface formed by the supporting member 14 rotates around the heating roll along with the rotation of the first gear 15. The roller surface 12 of the heating roller is fitted to the aluminum plate 7 step by step, and the aluminum plate 7 is gradually brought into contact with the roller surface 12 of the heating roller.
Fig. 7 is a schematic diagram of the fitting state of the aluminum plate when the aluminum plate continuous annealing system is started. As shown in FIG. 7, with further rotation of the motor 16, the supporting member 14 is driven to rotate to the side of the heating roller away from the aluminum plate 7, the roller surface 12 of the heating roller contacts with the surface of the aluminum plate 7 and tensions the aluminum plate 7, and the roller surface 12 of the heating roller and the aluminum plate 7 complete the fitting state. Through the position transform of supporting component 14, the utility model discloses can control the roll surface 12 of warming mill and aluminum plate 7's contact relation to carry out more accurate control, ensure that the roll surface 12 of warming mill is with suitable temperature and aluminum plate 7 contact, aluminum plate 7 tensioning completely in the roll surface 12 of warming mill, aluminum plate 7 is with the sufficient face contact of roll surface 12 of warming mill.
Fig. 8 is a flow chart of the method for continuously annealing an aluminum sheet according to the present invention. As shown in fig. 8, the present invention further provides a method for continuously annealing an aluminum plate, which adopts the above continuous annealing system, and comprises the following steps:
s101, heating the aluminum plate to 280-320 ℃ through a first heating area, for example: 280 deg.C, 285 deg.C, 290 deg.C, 295 deg.C, 300 deg.C, 305 deg.C, 310 deg.C, 315 deg.C, 320 deg.C, but not limited thereto.
S102, heating the aluminum plate to 380-420 ℃ through a second temperature rising zone, wherein the temperature of the aluminum plate is as follows: 380 deg.C, 385 deg.C, 390 deg.C, 395 deg.C, 400 deg.C, 405 deg.C, 410 deg.C, 415 deg.C, 420 deg.C, but not limited thereto.
S103, heating the aluminum plate to a quenching temperature range of 530 ℃ to 550 ℃ through a heat preservation area, for example: 530 deg.C, 535 deg.C, 540 deg.C, 545 deg.C, 550 deg.C, but not limited thereto.
S104, performing water cooling on the aluminum plate through a cooling water tank in a cooling area, wherein the temperature range of the cooling water is 30-50 ℃, for example: one of 30 ℃, 35 ℃, 40 ℃, 45 ℃ and 50 ℃, but not limited thereto, the temperature range of the aluminum plate when leaving the cooling water tank is 80 ℃ to 120 ℃, for example: one of 80 deg.C, 90 deg.C, 100 deg.C, 110 deg.C and 120 deg.C, but not limited thereto.
And S105, drying the moisture on the surface of the aluminum plate through a drying area.
In this embodiment, the cleaned aluminum plate is transported to an annealing furnace, and first passes through a dust removal roller to remove possible fine dust on the way, so as to ensure thorough cleaning of the aluminum plate, and then enters the furnace to be heated. The annealing furnace is divided into 5 sections, namely a first temperature-raising area 10, a second temperature-raising area 20, a heat-preserving area 30, a temperature-reducing area 40 and a drying area 50. Each temperature zone is relatively closed to prevent interference of adjacent temperature zones. 30 heating rollers are arranged in the furnace. A first temperature rise region: and 4 medium-low temperature rollers are adopted, the temperature of the aluminum plate is raised to be nearly 300 ℃ for about 3s, and then the aluminum plate enters a second temperature raising zone. A second temperature rising zone: the temperature of the aluminum plate was raised to the annealing process temperature using 4 high temperature rolls for about 3 seconds. A heat preservation area: according to the information we have understood, continuous annealing requires up to 60s, and therefore, to accommodate each type of product, this zone is equipped with 22 rolls, ensuring sufficient residence time. Cooling the temperature zone: two modes of water cooling and air cooling are set, and the water cooling and air cooling device can be used as required and can be switched conveniently. Once the solution temperature and holding time are reached, the strip is immediately subjected to precise quenching cooling in a combined water/air quenching apparatus, achieving the necessary cooling gradient and tensile strength for aluminum sheets of different thicknesses and alloys, while ensuring that the aluminum sheets are flat at the end of quenching. A drying area: and arranging a drying area behind the cooling area, and drying the water-cooled aluminum plate by adopting hot air to remove residual moisture so as to ensure that the aluminum plate is dried.
To sum up, the utility model discloses an aluminum plate continuous annealing system adopts the warming mill as the heat source, and aluminum plate's heat comes from the roller, transmits the material through the mode of conduction on. The utility model discloses a this kind of heating methods main advantage lies in: the heat transfer speed is high, and the production efficiency is high; the temperature is uniform, and the product consistency is good; the energy consumption is low, and the continuous annealing furnace has more production benefits than the conventional continuous annealing furnace.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (9)
1. An aluminum sheet continuous annealing system, comprising: the device comprises a first heating area (10), a second heating area (20), a heat preservation area (30), a cooling area (40) and a drying area (50) which are sequentially connected along a conveying direction;
the first temperature rising area (10) is provided with a plurality of roller body units with first heating rollers (11), and the first heating rollers (11) heat the aluminum plate (7) to 305-320 ℃;
the second heating area (20) is provided with a plurality of roller body units with second heating rollers (2), the temperature of the second heating rollers (2) is higher than that of the first heating rollers (11), and the second heating rollers (2) heat the aluminum plate (7) to 385-415 ℃;
the heat-retaining section (30) is provided with a plurality of roller units having a third heating roller (3),
the cooling area (40) is provided with a cooling water tank (4) with a water cooling roller (41), the first heating roller (11), the second heating roller (2), the third heating roller (3) and the water cooling roller (41) jointly form an aluminum plate annealing channel, and the aluminum plate is introduced into the cooling water tank (4) to be cooled.
2. The continuous annealing system for aluminum sheets according to claim 1, wherein the roller unit comprises:
a base plate (17);
two side walls (13) perpendicular to the bottom plate (17);
the heating roller is pivoted between the two side walls (13), and the roller surface (12) of the heating roller tensions the aluminum plate (7);
the two first gears (15), the said first gear (15) is coaxial with said warming mill, and locate at both ends of the said warming mill separately;
and the supporting component (14) comprises a plurality of supporting rods parallel to the heating roller, the supporting rods surround the periphery of one side of the heating roller to form a supporting surface positioned above the roller surface (12), and two ends of each supporting rod are respectively connected to the first gear (15).
3. The continuous annealing system for aluminum sheets according to claim 2, wherein: the roller body unit further includes:
a second gear (18), said second gear (18) engaging both said first gears (15), respectively;
and a motor (16) for driving the first gear (15) to rotate through the second gear (18), wherein a supporting surface formed by the supporting component (14) rotates around the heating roller along with the rotation of the first gear (15).
4. The continuous annealing system for aluminum sheets according to claim 2, wherein: when the supporting component (14) is positioned on one side of the heating roller contacting the aluminum plate (7), the supporting surface formed by the supporting rod separates the aluminum plate (7) from the roller surface (12) of the heating roller, and the aluminum plate (7) does not contact the roller surface (12) of the heating roller.
5. The continuous annealing system for aluminum sheets according to claim 2, wherein: when the supporting component (14) is positioned on the side of the heating roller, which is far away from the aluminum plate (7), the roller surface (12) of the heating roller is in surface contact with the aluminum plate (7) and tensions the aluminum plate (7).
6. The continuous annealing system for aluminum sheets according to claim 1, wherein each of the roller units includes an independent temperature sensor.
7. The continuous annealing system for aluminum sheets according to claim 1, wherein each roller unit is driven by a separate motor.
8. The continuous annealing system for aluminum sheets according to claim 1, wherein: the first heating area (10) is provided with four roller body units, and each roller body unit is provided with a first heating roller (11);
the second heating area (20) is provided with four roller body units, and each roller body unit is provided with a second heating roller (2);
the heat preservation area (30) is provided with twenty-two roller body units.
9. The continuous annealing system for aluminum sheets according to claim 1, wherein: the drying area (50) is provided with a hot air component (5).
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|---|---|---|---|
| CN202021605641.7U CN213388819U (en) | 2020-08-05 | 2020-08-05 | Continuous annealing system for aluminum plate |
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| CN202021605641.7U CN213388819U (en) | 2020-08-05 | 2020-08-05 | Continuous annealing system for aluminum plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690804A (en) * | 2020-08-05 | 2020-09-22 | 上海联净电子科技有限公司 | Continuous annealing system and annealing method for aluminum plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690804A (en) * | 2020-08-05 | 2020-09-22 | 上海联净电子科技有限公司 | Continuous annealing system and annealing method for aluminum plate |
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