CN112725565A - High-strength aluminum alloy heat treatment aging furnace and treatment method - Google Patents
High-strength aluminum alloy heat treatment aging furnace and treatment method Download PDFInfo
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- CN112725565A CN112725565A CN202011575522.6A CN202011575522A CN112725565A CN 112725565 A CN112725565 A CN 112725565A CN 202011575522 A CN202011575522 A CN 202011575522A CN 112725565 A CN112725565 A CN 112725565A
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- 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
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- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
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- 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
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Abstract
The invention discloses a high-strength aluminum alloy heat treatment aging furnace and a treatment method, and the high-strength aluminum alloy heat treatment aging furnace comprises a primary aging furnace and a secondary aging furnace which are arranged between a charging working section and a discharging working section in series, wherein the top of the secondary aging furnace is provided with a heating device and a plurality of hot air branch pipes I, and the bottom of the secondary aging furnace is provided with an air return pipe; the top of one-level ageing furnace is provided with the diffusion pipe, and the bottom is provided with the air-supply line, and the other end of hot-blast branch pipe one is through hot-blast house steward connection heating device, and the export of return air pipe includes two, and an export is through the import of draught fan and valve connection filter, and another exit linkage one-level ageing furnace's air-supply line still is provided with hot-blast branch pipe two at hot-blast house steward, and hot-blast branch pipe two also is connected with the air-supply line. The invention reasonably arranges the aging treatment process by using the overall method, comprehensively shortens the primary treatment time and the secondary treatment time of the aluminum alloy, has good treatment effect, can also reduce the energy consumption in unit time, reduces the production cost and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of aging treatment of comprehensive performance of aluminum alloy, in particular to a high-strength aluminum alloy heat treatment aging furnace and a treatment method.
Background
The aluminum alloy has low density, high strength similar to or superior to that of high-quality steel, good plasticity, excellent electric conductivity, heat conductivity and corrosion resistance, is widely used in industry, and is second to steel in use amount. Some aluminum alloys can be heat treated to achieve good mechanical, physical and corrosion properties. Although the aluminum alloy has good mechanical properties, with the wide use of the aluminum alloy, the aluminum alloy is difficult to be protected from corrosion in the service process, so that the aluminum alloy fails. There are many factors that affect the corrosion sensitivity of aluminum alloys, such as the external environment, surface treatment, metallurgical factors, and heat treatment processes. The heat treatment process is a very important influencing factor, and the establishment of a reasonable heat treatment schedule to improve the stress corrosion resistance of the aluminum alloy is a research hotspot all the time.
The heat treatment process improves the corrosion resistance of the aluminum alloy because the microstructure of the alloy changes during heat treatment, and the change in microstructure changes the susceptibility to corrosion. Common heat treatment processes include solution treatment, aging treatment, etc., wherein the aging treatment regime has a greater impact on the corrosion sensitivity of the alloy. Among various aging treatment methods, the two-stage aging treatment is simple to operate, can coarsen a grain boundary precipitated phase, and can ensure that the alloy has good resistance to corrosion. Therefore, the method is widely applied, but because the double-stage aging treatment needs two times of temperature rise and then heat preservation for several hours, a great deal of energy consumption and time are wasted. Therefore, it is necessary to develop a high-strength aluminum alloy heat treatment aging furnace and a treatment method thereof, which can reasonably arrange the aging treatment process by using a comprehensive method, comprehensively shorten the primary treatment time and the secondary treatment time of the aluminum alloy, have good treatment effect, reduce the energy consumption in unit time, reduce the production cost and improve the production efficiency.
Disclosure of Invention
The invention aims to provide a high-strength aluminum alloy heat treatment aging furnace and a treatment method, which can reasonably arrange the aging treatment process by using an overall method, comprehensively shorten the primary treatment time and the secondary treatment time of aluminum alloy, have good treatment effect, reduce the energy consumption in unit time, reduce the production cost and improve the production efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: a high-strength aluminum alloy heat treatment aging furnace comprises a primary aging furnace and a secondary aging furnace which are arranged between a charging working section and a discharging working section in series, wherein the top of the secondary aging furnace is provided with a heating device and a plurality of hot air branch pipes I, and the bottom of the secondary aging furnace is provided with an air return pipe; the top of the primary aging furnace is provided with a diffusing pipe, the bottom of the primary aging furnace is provided with an air inlet pipe, one end of a first hot air branch pipe is connected with a hearth of the secondary aging furnace, the other end of the first hot air branch pipe is connected with a heating device through a main hot air pipe, the front end of the heating device is provided with a filter, the outlet of a return air pipe comprises two outlets, one outlet is connected with the inlet of the filter through an induced draft fan and a valve, the other outlet is connected with the air inlet pipe of the primary aging furnace, the main hot air pipe is also provided with;
the primary aging furnace and the secondary aging furnace have the same internal structure and comprise furnace bodies, trolleys and rails, wherein trolley channels are arranged in the middle of the furnace bodies along the length direction of the furnace bodies, two ends of each channel respectively correspond to furnace doors at a feeding end and a discharging end, the rails penetrate along the trolley channels, and the trolleys are installed on the rails to slide; the trolley comprises a bottom frame and a top frame, the bottom frame and the top frame are connected through a plurality of pillars, a plurality of layers of brackets are arranged between the pillars, hooks are arranged at the front end and the rear end of the trolley, roller devices are arranged on the left side and the right side of the lower part of the trolley, guide roller devices are arranged on the left side and the right side of the middle part of the trolley, and two parallel guide rails are arranged inside furnace walls on the two sides in a matched manner with the guide roller devices; and the feeding end and the discharging end of the first-stage aging furnace and the second-stage aging furnace are respectively provided with a winch, and the winches are connected with the hooks on the trolley through a second steel wire rope.
Furthermore, the furnace doors of the feeding end and the discharging end are provided with door opening mechanisms, each door opening mechanism comprises a support arranged at the top of the furnace body, a rope winding drum is installed below the supports, a rotating shaft of each rope winding drum is connected with a low-speed shaft of a speed reducer, a high-speed shaft of each speed reducer is connected with a motor, two sides of each furnace door are provided with sliding grooves, the furnace doors are slidably installed in the sliding grooves, the top of each furnace door is provided with a hanging ring, a first steel wire rope is tied to each hanging ring, and the other end of the first steel wire rope is guided and wound on.
Further, the roller device comprises a roller frame, the roller frame is installed at the bottom of the support column, a first pin shaft is horizontally installed on the roller frame, a first shaft sleeve is installed on the outer portion of the first pin shaft in an interference fit mode, and a roller is installed on the outer portion of the first shaft sleeve.
Further, the guide roller device comprises a roller frame, the roller frame is installed in the middle of the supporting column through bolts, a second pin shaft is vertically installed on the roller frame, a second shaft sleeve is installed on the second pin shaft in an interference fit mode, and a guide roller is installed on the second shaft sleeve.
Furthermore, a fresh air pipe is arranged at the front end of the return air pipe entering the filter.
Furthermore, 3-6 hot air branch pipes entering the hearth are uniformly arranged at the top of the furnace body.
Further, the treatment method of the high-strength aluminum alloy heat treatment aging furnace is characterized in that the aging treatment is two-stage aging treatment, and the first-stage aging treatment process comprises the following steps: pulling the aluminum profile subjected to the solution treatment into a primary aging furnace heated to 110-140 ℃ by a winch, and preserving heat for 5-7 h, wherein the secondary aging treatment process comprises the following steps: and pulling the aluminum profile subjected to the first-stage aging treatment into a second-stage aging furnace heated to 180-210 ℃ by a winch, preserving the heat for 5-7 h, finally pulling the aluminum profile subjected to the second-stage aging treatment out of the furnace by the winch, carrying out air cooling to room temperature, pulling the aluminum profile in the first-stage aging furnace into the second-stage aging furnace for second-stage aging treatment, and then loading a new batch of materials into the first-stage aging furnace to carry out cyclic reciprocation.
The invention has the technical effects and advantages that:
according to the invention, through the primary aging furnace and the secondary aging furnace between the charging working section and the discharging working section, when the previous batch is subjected to secondary aging treatment in the secondary aging furnace, the next batch can be subjected to primary aging treatment in the primary aging furnace, and the two batches are simultaneously carried out, so that the comprehensive treatment time of the two batches can be saved, and the problem that a large amount of time is consumed because the existing batch is subjected to primary aging treatment firstly and then is continuously heated for secondary aging treatment is avoided; meanwhile, the waste heat of the secondary aging furnace can be supplied to the primary aging furnace for use, so that the energy is saved; the method scientifically utilizes a planning method to reasonably arrange the aging treatment process, comprehensively shortens the primary treatment time and the secondary treatment time of the aluminum alloy, has good treatment effect, can also reduce the energy consumption in unit time, reduces the production cost and improves the production efficiency; in addition, the furnace body of the invention has reasonable structural design, simple operation mechanism, stable operation and high safety performance.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of a secondary aging furnace;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of portion I of FIG. 3;
FIG. 5 is an enlarged view of section II of FIG. 3;
in the figure: 1-rail, 21-roller frame, 22-roller, 23-shaft sleeve I, 24-pin shaft I, 31-bottom frame, 32-pillar, 33-bracket, 34-top frame, 4-guide rail, 51-pin shaft II, 52-guide roller, 53-shaft sleeve II, 54-roller frame, 61-wire rope I, 6-door opening mechanism, 62-pulley block, 63-bracket, 64-rope winding drum, 65-reducer, 66-motor, 7-furnace body, 71-furnace chamber, 72-furnace wall, 81-hot air main pipe, 82-hot air branch I, 83-hot air branch II, 84-air inlet pipe, 85-relief pipe, 91-air pipe heating device, 92-filter, 10-new air pipe, 11-return pipe, 12-an induced draft fan, 13-a furnace door, 14-a hook and 15-a winch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a high-strength aluminum alloy heat treatment aging furnace as shown in figures 1-5, which comprises a primary aging furnace and a secondary aging furnace which are arranged between a charging working section and a discharging working section in series, wherein the top of the secondary aging furnace is provided with a heating device 91 and a plurality of hot air branch pipes 82, and the bottom of the secondary aging furnace is provided with an air return pipe 11; the top of the primary aging furnace is provided with a diffusing pipe 85, the bottom of the primary aging furnace is provided with an air inlet pipe 84, one end of a first hot air branch pipe 82 is connected with the hearth 71 of the secondary aging furnace, the other end of the first hot air branch pipe is connected with a heating device 91 through a hot air main pipe 81, the front end of the heating device 91 is provided with a filter 92, the outlet of a return air pipe 11 comprises two outlets, one outlet is connected with the inlet of the filter 92 through an induced draft fan 12 and a valve, the other outlet is connected with the air inlet pipe 84 of the primary aging furnace, the hot air main pipe 81 is also provided with a second hot;
the primary aging furnace and the secondary aging furnace have the same internal structure and comprise a furnace body 7, a trolley and a track 1, wherein the middle part of the furnace body 7 is provided with a trolley channel along the length direction of the furnace body 7, two ends of the channel respectively correspond to furnace doors 13 at a feeding end and a discharging end, the track 1 passes through the trolley channel, and the trolley is arranged on the track 1 to slide; the trolley comprises a bottom frame 31 and a top frame 34, the bottom frame 31 and the top frame 34 are connected through a plurality of support columns 32, a plurality of layers of brackets 33 are arranged between the support columns 32, hooks 14 are arranged at the front end and the rear end of the trolley, roller devices are arranged at the left side and the right side of the lower part of the trolley, guide roller devices are arranged at the left side and the right side of the middle part of the trolley, and two parallel guide rails 4 are arranged inside furnace walls 72 at the two sides in a matched manner with the guide roller devices; and the feeding end and the discharging end of the first-stage aging furnace and the second-stage aging furnace are respectively provided with a winch 15, and the winches 15 are connected with a hook 14 on the trolley through a second steel wire rope.
The furnace door 13 of feed end and discharge end all is provided with mechanism 6 of opening door, mechanism 6 of opening door is including setting up the support 63 at furnace body 7 top, support 63 installs serving drum 64 in the below, the low-speed axle of reduction gear 65 is connected to serving drum 64's pivot, the high-speed hub connection motor 66 of reduction gear 65, the both sides of furnace door 13 are provided with the spout, furnace door 13 slidable mounting is in the spout, the top of furnace door 13 is provided with rings, it has a wire rope 61 to tie on the rings, the other end of a wire rope 61 is through assembly pulley 62 direction winding on serving drum 64.
The roller device comprises a roller frame 21, the roller frame 21 is installed at the bottom of a support column 32, a first pin shaft 24 is horizontally installed on the roller frame 21, a first shaft sleeve 23 is installed on the outer portion of the first pin shaft 24 in an interference fit mode, and a roller 22 is installed on the outer portion of the first shaft sleeve 23.
The guide roller device comprises a roller frame 54, the roller frame 54 is installed in the middle of the support column 32 through a bolt, a second pin shaft 51 is vertically installed on the roller frame 54, a second shaft sleeve 53 is installed on the outer portion of the second pin shaft 51 in an interference fit mode, and a guide roller 52 is installed on the outer portion of the second shaft sleeve 53.
The return duct 11 is provided with a fresh air duct 10 at the front end of the intake filter 92.
3-6 hot air branch pipes 82 entering the hearth 71 are uniformly arranged at the top of the furnace body 7.
A treatment method of a high-strength aluminum alloy heat treatment aging furnace is characterized in that the aging treatment is two-stage aging treatment, and the first-stage aging treatment process comprises the following steps: drawing the quenched aluminum profile into a primary aging furnace heated to 110-140 ℃ from a winch 15, and preserving heat for 5-7 h, wherein the secondary aging treatment process comprises the following steps: and pulling the aluminum profile subjected to the first-stage aging treatment into a second-stage aging furnace heated to 180-210 ℃ by a winch 15, preserving the heat for 5-7 h, finally pulling the aluminum profile subjected to the second-stage aging treatment out of the furnace by the winch 15, cooling the aluminum profile to room temperature by air, pulling the aluminum profile in the first-stage aging furnace into the second-stage aging furnace for second-stage aging treatment, and then loading a new batch of aluminum profile into the first-stage aging furnace to circulate.
According to the invention, through the primary aging furnace and the secondary aging furnace between the charging working section and the discharging working section, when the previous batch is subjected to secondary aging treatment in the secondary aging furnace, the next batch can be subjected to primary aging treatment in the primary aging furnace, and the two batches are simultaneously carried out, so that the comprehensive treatment time of the two batches can be saved, and the problem that a large amount of time is consumed because the conventional batch is subjected to primary aging treatment firstly and then is continuously heated for secondary aging treatment is avoided; meanwhile, the waste heat of the secondary aging furnace can be supplied to the primary aging furnace for use, so that the energy is saved; the method scientifically utilizes a planning method to reasonably arrange the aging treatment process, comprehensively shortens the primary treatment time and the secondary treatment time of the aluminum alloy, has good treatment effect, can also reduce the energy consumption in unit time, reduces the production cost and improves the production efficiency; in addition, the furnace body of the invention has reasonable structural design, simple operation mechanism, stable operation and high safety performance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a high strength aluminum alloy heat treatment aging furnace which characterized in that: the device comprises a primary aging furnace and a secondary aging furnace which are arranged between a charging working section and a discharging working section in series, wherein the top of the secondary aging furnace is provided with a heating device (91) and a plurality of hot air branch pipes I (82), and the bottom of the secondary aging furnace is provided with an air return pipe (11); the top of the primary aging furnace is provided with a diffusing pipe (85), the bottom of the primary aging furnace is provided with an air inlet pipe (84), one end of a first hot air branch pipe (82) is connected with a hearth (71) of the secondary aging furnace, the other end of the first hot air branch pipe is connected with a heating device (91) through a main hot air pipe (81), the front end of the heating device (91) is provided with a filter (92), the outlet of a return air pipe (11) comprises two outlets, one outlet is connected with the inlet of the filter (92) through an induced draft fan (12) and a valve, the other outlet is connected with the air inlet pipe (84) of the primary aging furnace, the main hot air pipe (81) is also provided with a second hot air branch pipe (;
the primary aging furnace and the secondary aging furnace have the same internal structure and both comprise a furnace body (7), a trolley and a track (1), wherein a trolley channel is arranged in the middle of the furnace body (7) along the length direction of the furnace body (7), two ends of the channel respectively correspond to furnace doors (13) at a feeding end and a discharging end, the track (1) penetrates through the trolley channel, and the trolley is arranged on the track (1) to slide; the trolley comprises a bottom frame (31) and a top frame (34), the bottom frame (31) and the top frame (34) are connected through a plurality of support columns (32), a plurality of layers of brackets (33) are arranged between the support columns (32), hooks (14) are arranged at the front end and the rear end of the trolley, roller devices are arranged at the left side and the right side of the lower part of the trolley, guide roller devices are arranged at the left side and the right side of the middle part of the trolley, and two parallel guide rails (4) are arranged in furnace walls (72) at the two sides in a matching manner with the guide roller devices; and the feeding end and the discharging end of the first-stage aging furnace and the second-stage aging furnace are respectively provided with a winch (15), and the winches (15) are connected with a hook (14) on the trolley through a second steel wire rope.
2. The heat treatment aging furnace for the high-strength aluminum alloy according to claim 1, characterized in that: the furnace door (13) of feed end and discharge end all is provided with mechanism of opening door (6), mechanism of opening door (6) is including setting up support (63) at furnace body (7) top, rope reel (64) are installed to support (63) below, the low-speed axle of reduction gear (65) is connected to the pivot of rope reel (64), the high-speed axle of reduction gear (65) connects motor (66), the both sides of furnace door (13) are provided with the spout, furnace door (13) slidable mounting is in the spout, the top of furnace door (13) is provided with rings, it has wire rope (61) to tie on the rings, the other end of wire rope (61) is through assembly pulley (62) direction winding on rope reel (64).
3. The heat treatment aging furnace for the high-strength aluminum alloy according to claim 1, characterized in that: the roller device comprises a roller frame (21), the roller frame (21) is installed at the bottom of a support column (32), a first pin shaft (24) is horizontally installed on the roller frame (21), a first shaft sleeve (23) is installed on the outer portion of the first pin shaft (24) in an interference fit mode, and a roller (22) is installed on the outer portion of the first shaft sleeve (23).
4. The heat treatment aging furnace for the high-strength aluminum alloy according to claim 1, characterized in that: the guide roller device comprises a roller frame (54), the roller frame (54) is installed in the middle of the support column (32) through a bolt, a second pin shaft (51) is vertically installed on the roller frame (54), a second shaft sleeve (53) is installed on the outer portion of the second pin shaft (51) in an interference fit mode, and a guide roller (52) is installed on the outer portion of the second shaft sleeve (53).
5. The heat treatment aging furnace for the high-strength aluminum alloy according to claim 1, characterized in that: the return air pipe (11) is provided with a fresh air pipe (10) at the front end of the filter (92).
6. The heat treatment aging furnace for the high-strength aluminum alloy according to claim 1, characterized in that: 3-6 hot air branch pipes (82) entering the hearth (71) are uniformly arranged at the top of the furnace body (7).
7. The treatment method of the high-strength aluminum alloy heat treatment aging furnace according to claims 1 to 6, characterized by comprising the following steps: the aging treatment is two-stage aging treatment, and the first-stage aging treatment process comprises the following steps: the aluminum profile subjected to the solution treatment is pulled into a primary aging furnace heated to 110-140 ℃ by a winch (15) and is subjected to heat preservation for 5-7 h, and the secondary aging treatment process comprises the following steps: and pulling the aluminum profile subjected to the first-stage aging treatment into a second-stage aging furnace heated to 180-210 ℃ by a winch (15) for heat preservation for 5-7 h, pulling the aluminum profile subjected to the second-stage aging treatment out of the furnace by the winch (15) to be air-cooled to room temperature, pulling the aluminum profile in the first-stage aging furnace into the second-stage aging furnace for second-stage aging treatment, and then loading a new batch of aluminum profile into the first-stage aging furnace to perform cyclic reciprocation.
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| CN202011575522.6A CN112725565A (en) | 2020-12-28 | 2020-12-28 | High-strength aluminum alloy heat treatment aging furnace and treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645128A (en) * | 2022-03-25 | 2022-06-21 | 广东澳美铝业有限公司 | Combined aging furnace for aluminum alloy material regression aging heat treatment |
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| US20010009170A1 (en) * | 1999-12-10 | 2001-07-26 | Oscar Garza-Ondarza | Apparatus for simplified production of heat treatable aluminum alloy castings with artificial self-aging |
| CN104278222A (en) * | 2013-07-05 | 2015-01-14 | 中国科学院金属研究所 | Al-Zn-Mg aluminum alloy two-stage aging heat treatment regime |
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| CN114645128A (en) * | 2022-03-25 | 2022-06-21 | 广东澳美铝业有限公司 | Combined aging furnace for aluminum alloy material regression aging heat treatment |
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Application publication date: 20210430 |