CN117363865B - Heat treatment furnace for aluminum alloy die castings - Google Patents
Heat treatment furnace for aluminum alloy die castings Download PDFInfo
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- CN117363865B CN117363865B CN202311517420.2A CN202311517420A CN117363865B CN 117363865 B CN117363865 B CN 117363865B CN 202311517420 A CN202311517420 A CN 202311517420A CN 117363865 B CN117363865 B CN 117363865B
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- 238000004512 die casting Methods 0.000 title claims abstract description 107
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 104
- 238000010438 heat treatment Methods 0.000 title claims abstract description 86
- 230000007246 mechanism Effects 0.000 claims abstract description 75
- 238000005192 partition Methods 0.000 claims abstract description 64
- 238000004321 preservation Methods 0.000 claims abstract description 37
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 230000000087 stabilizing effect Effects 0.000 claims description 43
- 230000009471 action Effects 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 6
- 230000032683 aging Effects 0.000 description 10
- 238000005266 casting Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
-
- 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
- C21D1/34—Methods of heating
-
- 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
-
- 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
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Charging Or Discharging (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention relates to the technical field of heat treatment equipment, and discloses a heat treatment furnace for aluminum alloy die castings, which comprises a heat preservation furnace body, wherein the air flow direction provided by an air supply mechanism is opposite to the rotation direction of the aluminum alloy die castings driven by a conveying mechanism in each temperature partition of the heat preservation furnace body. According to the invention, the conveying mechanism conveys the aluminum alloy die castings along the paths from the feeding port to the discharging port, and simultaneously rotates in each temperature zone, so that the air flow provided by the air supply mechanism can be fully collided with the aluminum alloy die castings in each temperature zone, the uniformity of the temperature in each temperature zone is improved through the air flow effect, and meanwhile, the heat carried by the air flow can be more effectively transmitted to the aluminum alloy die castings through the positive full collision between the air flow and the aluminum alloy die castings, so that the heat treatment process of the aluminum alloy die castings is promoted.
Description
Technical Field
The invention relates to the technical field of heat treatment equipment, in particular to a heat treatment furnace for aluminum alloy die castings.
Background
In the die casting process, because of the high-speed and high-pressure process characteristics, gas rolling can be generated, so that the defects of internal air holes and the like are unavoidable in the die casting. Because of the existence of the air holes, the phenomenon of foaming is formed by aggregation and expansion of the die casting in the high-temperature solid solution process, so that the surface quality is poor, the dimension is deformed, the appearance of the casting is influenced, the mechanical property of the casting is reduced, and the die casting cannot be normally used. Die castings are generally not heat treated, but this also greatly limits the range of use of die castings.
The heat treatment of die-cast aluminum alloys is mainly achieved by solution treatment and subsequent aging treatment. The solution treatment (also called quenching) is a process of heating the aluminum alloy to a higher temperature as much as possible for a certain time and then rapidly cooling to obtain a supersaturated solid solution. But the heating temperature cannot be higher than the solid phase temperature, so that the casting is burnt excessively, and the casting is scrapped.
The supersaturated solid solution is decomposed in a natural state, and the strength and hardness of the alloy are correspondingly improved due to precipitation of a precipitated phase in the process, which is called natural aging. However, the natural aging process is too slow to meet the actual industrial requirements, so that the aluminum alloy is generally heated to 100-200 ℃ to promote precipitation of a precipitated phase, thereby not only improving the production efficiency, but also achieving the purpose of improving the strength and hardness of the aluminum alloy.
In the case of cast aluminum alloys, distortion of the crystal lattice occurs during aging due to the formation of a precipitated phase, and the energy in the distorted region increases. The plastic deformation process of the material is mainly realized by the movement of dislocation, and a high-energy distortion area can have a strong blocking effect on the dislocation which moves, so that the strength and the hardness of the material are improved.
The conventional heat treatment furnace for aluminum alloy die castings is characterized in that the temperature in the furnace far exceeds the temperature of the aluminum alloy die castings, so that when the aluminum alloy die castings initially enter the heat treatment furnace, the surface layer is seriously affected by the temperature, the heat treatment temperature of the inner core body of the aluminum alloy die castings is not yet reached at the same time of excessive heat treatment of the outer layer, the uniformity of the heat treatment inside and outside is poor, and meanwhile, the temperature of the area close to a heating piece is high due to uneven temperature distribution in the furnace, the heat treatment is unstable, the inside of the aluminum alloy die castings is difficult to fully perform aging treatment, and the uniformity of the strength and hardness of the aluminum alloy die castings is poor.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a heat treatment furnace for aluminum alloy die castings.
In order to solve the technical problems, the invention provides the following technical scheme:
The heat treatment furnace for the aluminum alloy die castings comprises a heat preservation furnace body, wherein a conveying mechanism is arranged in the heat preservation furnace body, the heat preservation furnace body comprises a feed inlet and a discharge outlet, and the conveying mechanism can convey the aluminum alloy die castings from the feed inlet to the discharge outlet; the temperature of each temperature partition can be adjusted independently of the other temperature partitions, and the conveying mechanism can convey the aluminum alloy die castings from the feeding port to the discharging port in a path, and simultaneously rotates in each temperature partition; the air supply mechanism is arranged outside the heat preservation furnace body and can supply air to each temperature partition respectively, so that air flow circulation in each temperature partition is provided, and the temperature in each temperature partition is kept equal; inside each temperature zone, the air flow direction provided by the air supply mechanism is opposite to the rotation direction of the aluminum alloy die casting driven by the conveying mechanism; the heat preservation furnace body outer wall just is located the feed inlet outside is provided with the feeding air curtain, heat preservation furnace body outer wall just is located the discharge gate outside is provided with the ejection of compact air curtain, the feeding air curtain with the ejection of compact air curtain is used for with the inside heating chamber of heat preservation furnace body with the external environment of heat preservation furnace body keeps apart.
Preferably, the feeding hole and the discharging hole are both arranged on one side of the heat-preserving furnace body, the conveying mechanism comprises a plurality of linear conveying units and a plurality of bevel conveying units, and two ends of each bevel conveying unit can be respectively connected with the linear conveying units; inside each linear conveying unit, the aluminum alloy die castings can be conveyed along a straight line; inside each folded angle conveying unit, the conveying path of the aluminum alloy die casting can convey at a 90-degree angle; the angle-folding conveying units and the linear conveying units are matched with each other, so that any conveying path from the feed inlet to the discharge outlet can be formed.
Preferably, the total length and the rotation angle of the conveying path of the aluminum alloy die casting are the same inside each of the straight conveying units and each of the bevel conveying units, and each of the straight conveying units and each of the bevel conveying units corresponds to one of the temperature partitions; the inner wall of the heat preservation furnace body is provided with heating assemblies corresponding to each temperature partition, heating wires are arranged inside the heating assemblies, and each heating assembly can respectively adjust the temperature of each temperature partition by respectively adjusting the input power of the heating wires inside the heating assemblies.
Preferably, the conveying mechanism is provided with a plurality of stabilizing mechanisms in a mounting way, and each stabilizing mechanism comprises a stabilizing bracket, a loading tray and a driving connecting piece; one end of the stabilizing support is fixed with the loading tray, the other end of the stabilizing support is fixed with the driving connecting piece, the loading tray is used for bearing an aluminum alloy die casting, and one end, close to the conveying mechanism, of the driving connecting piece can be embedded into the conveying mechanism; the stabilizing support can keep the loading tray in a horizontal state in the process that the loading tray moves along with the driving connecting piece under the driving of the conveying mechanism.
Preferably, the driving connecting piece comprises a connecting frame, a driving motor, a driving gear and a stable limiting rod; the connecting frame is fixed with between the stable support, driving motor is fixed the connecting frame is kept away from one side of conveying mechanism, driving gear with driving motor's output shaft is coaxial fixed, the one end of stable gag lever post with the connecting frame is close to one side of conveying mechanism is fixed.
Preferably, the linear conveying unit comprises a linear conveying rail and a linear limit rail, and the bevel conveying unit comprises a bevel conveying rail and a bevel limit rail; the two adjacent linear conveying units and the bevel conveying unit are communicated with each other, and the linear limiting rail and the bevel limiting rail are communicated with each other; the two adjacent linear conveying units are communicated with each other, and the two linear conveying rails are communicated with each other.
Preferably, the linear conveying track and the bevel conveying track comprise limiting teeth; the driving gear can be meshed with the limiting teeth when moving into any linear conveying track and any bevel conveying track; one end of the stabilizing limiting rod, which is far away from the connecting frame, can be embedded into any linear limiting rail and any folded angle limiting rail; under the drive of the drive motor, the whole drive connecting piece is driven to move through the gear engagement between the drive gear and the limiting teeth, and meanwhile, the stable limiting rod is driven to move in the linear limiting track and the bevel limiting track.
Preferably, the air supply mechanism comprises an air pump and a plurality of air supply pipelines, each air supply pipeline is communicated with the air pump, and the air supplied by the air pump to each air supply pipeline is protective air; each air supply pipeline corresponds to one temperature partition, the air supply pipeline is arranged on the inner wall of the heat preservation furnace body corresponding to each temperature partition, and the winding mode of the air supply pipeline is the same as that of the corresponding linear conveying rail and the corresponding bevel conveying rail.
Preferably, a plurality of exhaust holes are formed in one side, close to the corresponding linear conveying rail and the corresponding bevel conveying rail, of each air supply pipeline, and a given included angle is formed between the air discharge direction of each exhaust hole and the air supply direction of the air supply pipeline at the current position of the exhaust hole, and the given included angle value is smaller than 90 degrees.
Preferably, heating wires are arranged in the inner walls of the air supply pipelines, and the temperature of the air discharged from the air discharge holes of the air supply pipelines is equal to the temperature partition temperature of the current air supply pipeline under the action of the heating wires of the inner walls of the air supply pipelines; the gas source of the feeding gas curtain is the gas supply pipeline corresponding to the temperature partition closest to the feeding hole, and the gas source of the discharging gas curtain is the gas supply pipeline corresponding to the temperature partition closest to the discharging hole.
Compared with the prior art, the invention provides a heat treatment furnace for aluminum alloy die castings, which has the following beneficial effects:
1. This kind of heat treatment furnace of aluminum alloy die casting, when conveying mechanism carries the aluminum alloy die casting along the route of feed inlet to discharge gate, rotate inside every temperature subregion, in order can fully and effectively inside every temperature subregion, under the effect of the heating element that the inside set up of heat preservation furnace body, rotate the aluminum alloy die casting, so that each position of aluminum alloy die casting carries out abundant and evenly heats, and simultaneously because the effect of air feed mechanism, air feed mechanism supplies air to each temperature subregion respectively, the inside air current circulation of each temperature subregion is provided, maintain the inside temperature equalization of each temperature subregion, and inside each temperature subregion, the air current direction that air feed mechanism provided is opposite with the rotation direction that conveying mechanism driven the aluminum alloy die casting, make inside each temperature subregion, the air current that air feed mechanism provided can fully collide with the aluminum alloy die casting, in order to improve the homogeneity of the inside temperature of each temperature subregion through the air current effect, through the forward abundant collision between air current and the aluminum alloy die casting, make the heat that the air current carried can more effectively conduct for the aluminum alloy die casting, promote the heat treatment process of aluminum alloy die casting.
2. This kind of heat treatment furnace of aluminum alloy die casting sets up feeding air curtain and ejection of compact air curtain through the feed inlet and the discharge gate of heat preservation furnace body outer wall and is used for keeping apart the heating chamber of heat preservation furnace body inside and the external environment of heat preservation furnace body mutually, can effectively guarantee that aluminum alloy die casting carries out the heat treatment under the effect of shielding gas, avoid the impurity of heat treatment in-process air to get into inside the aluminum alloy die casting, can make steady transition between aluminum alloy die casting and the external environment through the heat shielding gas of feeding air curtain and ejection of compact air curtain simultaneously, in order to improve aluminum alloy die casting heat treatment process's smoothness, avoid appearing quenching and shock hot phenomenon, guarantee aluminum box die casting's ageing treatment's temperature gradient homogeneity.
3. The heat treatment furnace for the aluminum alloy die castings comprises a conveying path from a feed inlet to a discharge outlet, wherein each linear conveying track and each bevel conveying track jointly form a limiting path from the feed inlet to the discharge outlet, each linear limiting track and each bevel limiting track jointly form a gear engagement between a driving gear and a limiting tooth in the conveying path under the driving of a driving motor, the whole driving connecting piece is driven to move, meanwhile, a driving stabilizing limiting rod moves in the limiting path formed by the linear limiting tracks and the bevel limiting tracks, the driving connecting piece is stably driven to move, and meanwhile, under the stabilizing action of the stabilizing support, the stabilizing support keeps the horizontal state of a loading tray, and simultaneously, the aluminum alloy die castings loaded in the loading tray are conveyed along the path from the feed inlet to the discharge outlet and simultaneously rotate in each temperature zone to ensure the heat balance of the loaded aluminum alloy die castings in each temperature zone.
Drawings
FIG. 1 is a schematic perspective view showing a heat treatment furnace for aluminum alloy die castings according to one embodiment of the present invention;
FIG. 2 is a schematic diagram showing a second perspective view of a heat treatment furnace for aluminum alloy die castings according to the present invention;
FIG. 3 is a third schematic perspective view of a heat treatment furnace for aluminum alloy die castings according to the present invention;
FIG. 4 is a schematic view showing a schematic perspective view of a heat treatment furnace for aluminum alloy die castings according to the present invention;
FIG. 5 is a schematic view showing an internal structure of a heat treatment furnace for aluminum alloy die castings according to the present invention;
FIG. 6 is a schematic perspective view of a stabilizing mechanism according to the present invention;
FIG. 7 is a schematic diagram showing a second perspective view of the stabilizing mechanism of the present invention.
In the figure: 1. a heat-preserving furnace body; 11. a feed inlet; 12. a discharge port; 13. temperature partitioning; 2. a conveying mechanism; 21. a linear conveying unit; 211. a linear conveying rail; 212. a linear limit rail; 22. a bevel conveying unit; 221. a dog-ear conveying track; 222. angle-folding limit rail; 3. a gas supply mechanism; 31. an air pump; 32. an air supply duct; 4. a feed gas curtain; 5. discharging air curtain; 6. a heating assembly; 7. a stabilizing mechanism; 71. a stabilizing support; 72. loading a tray; 73. a drive connection; 731. a connecting frame; 732. a driving motor; 733. a drive gear; 734. stabilizing the limit rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As described in the background art, the application provides a heat treatment furnace for aluminum alloy die castings, which aims to solve the technical problems.
Referring to fig. 1-7, a heat treatment furnace for aluminum alloy die castings comprises a heat preservation furnace body 1, wherein a conveying mechanism 2 is arranged in the heat preservation furnace body 1, the heat preservation furnace body 1 comprises a feed inlet 11 and a discharge outlet 12, and the conveying mechanism 2 can convey the aluminum alloy die castings from the feed inlet 11 to the discharge outlet 12; the inside of the heat preservation furnace body 1 is provided with a plurality of temperature partitions 13, the temperature of each temperature partition 13 can be adjusted independently of other temperature partitions 13, and the conveying mechanism 2 can convey the aluminum alloy die castings from the feeding port 11 to the discharging port 12 and simultaneously rotate in each temperature partition 13; the outside of the heat preservation furnace body 1 is provided with an air supply mechanism 3, the air supply mechanism 3 can supply air to each temperature partition 13 respectively, and air flow circulation in each temperature partition 13 is provided to maintain the temperature in each temperature partition 13 to be equal; inside each temperature zone 13, the air flow direction provided by the air supply mechanism 3 is opposite to the rotation direction of the aluminum alloy die casting driven by the conveying mechanism 2; the outer wall of the heat preservation furnace body 1 and positioned outside the feed inlet 11 are provided with a feed air curtain 4, the outer wall of the heat preservation furnace body 1 and positioned outside the discharge outlet 12 are provided with a discharge air curtain 5, and the feed air curtain 4 and the discharge air curtain 5 are used for isolating a heating cavity inside the heat preservation furnace body 1 from the external environment of the heat preservation furnace body 1.
When the aluminum alloy die casting heat treatment device is used, aluminum alloy die castings to be subjected to heat treatment are sent into the heat preservation furnace body 1 from the feed inlet 11, and the aluminum alloy die castings are conveyed to the discharge outlet 12 in the process of heat treatment of the aluminum alloy die castings from the feed inlet 11 through each temperature partition 13 under the action of the conveying mechanism 2; the aluminum alloy die castings are conveyed along the paths from the feed port 11 to the discharge port 12 by the conveying mechanism 2 and simultaneously rotated in each temperature partition 13, so that the aluminum alloy die castings can be fully and effectively rotated in each temperature partition 13 under the action of the heating component 6 arranged in the heat preservation furnace body 1, each part (such as the left, right, upper and lower sides and the like) of the aluminum alloy die castings can be fully and uniformly heated, meanwhile, due to the action of the air supply mechanism 3, the air supply mechanism 3 respectively supplies air to each temperature partition 13, air flow circulation in each temperature partition 13 is provided, the temperature equality in each temperature partition 13 is maintained, and in each temperature partition 13, the air flow direction provided by the air supply mechanism 3 is opposite to the rotation direction of the aluminum alloy die castings driven by the conveying mechanism 2, so that the air flow provided by the air supply mechanism 3 can be fully collided with the aluminum alloy die castings in each temperature partition 13, the heat carried by the air flow and the positive air flow between the aluminum alloy die castings can be fully collided with the aluminum alloy die castings to promote the heat transfer of the aluminum alloy die castings to the aluminum alloy die castings effectively in the heat treatment process; and through setting up feed gas curtain 4 and ejection of compact gas curtain 5 at the feed inlet 11 and the ejection of compact gas curtain 12 of heat preservation furnace body 1 outer wall and being used for keeping apart the heating chamber of heat preservation furnace body 1 inside with the external environment of heat preservation furnace body 1, can effectively guarantee that aluminum alloy die casting carries out the heat treatment under the effect of shielding gas (the gas that air feed mechanism 3 provided is shielding gas, this shielding gas is the required common shielding gas in aluminum alloy die casting ageing treatment process), avoid the impurity of heat treatment in-process air to get into inside the aluminum alloy die casting, can make steady transition between aluminum alloy die casting and the external environment through the thermal shielding gas of feed gas curtain 4 and ejection of compact gas curtain 5 simultaneously, in order to improve aluminum alloy die casting heat treatment's smoothness, avoid appearing quenching and the phenomenon of sudden heating, guarantee aluminum box die casting's ageing treatment's temperature gradient homogeneity.
Further, referring to fig. 3-5, the feeding port 11 and the discharging port 12 are both disposed at one side of the heat insulation furnace body 1, the conveying mechanism 2 includes a plurality of linear conveying units 21 and a plurality of bevel conveying units 22, and two ends of each bevel conveying unit 22 can be respectively connected with the linear conveying units 21; inside each linear conveying unit 21, the aluminum alloy die cast can be conveyed in a straight line; inside each corner conveying unit 22, the conveying path of the aluminum alloy die casting can convey at 90-degree corners; the plurality of corner conveying units 22 and the plurality of linear conveying units 21 are matched with each other, and can be combined into any conveying path from the feed port 11 to the discharge port 12.
Inside each linear conveying unit 21 and each corner conveying unit 22, the total length and the rotation angle of the conveying path of the aluminum alloy die casting are the same, and each linear conveying unit 21 and each corner conveying unit 22 correspond to one temperature partition 13; the inner wall of the heat preservation furnace body 1 is provided with heating assemblies 6 corresponding to each temperature partition 13, heating wires are arranged inside each heating assembly 6, and each heating assembly 6 can respectively adjust the temperature of each temperature partition 13 by respectively adjusting the input power of the heating wires inside.
In actual use, through the arrangement of the plurality of linear conveying units 21 and the plurality of corner conveying units 22, the feed inlet 11 and the discharge outlet 12 can be arranged at one end of the heat treatment furnace of the aluminum alloy die casting, and through the combined arrangement of the plurality of linear conveying units 21 and the plurality of corner conveying units 22, the conveying path from the feed inlet 11 to the discharge outlet 12 which needs a longer length interval can be folded, so that the integration and the utilization of factory space can be facilitated, and the utilization rate of the factory space can be improved; each linear conveying unit 21 and each bevel conveying unit 22 correspond to one temperature partition 13, the input power of the internal heating wires is respectively regulated through the heating component 6 corresponding to each temperature partition 13, the temperature of each temperature partition 13 is respectively regulated, different temperatures and temperature gradients can be set according to the requirements of aging treatment in practical application, and the total length and the rotation angle of the conveying path of the aluminum alloy die casting are the same in each linear conveying unit 21 and each bevel conveying unit 22, so that the time and the distance passing through the inside of each linear conveying unit 21 and each bevel conveying unit 22 can be matched with the rotation angle, the heat treatment time in each temperature partition 13 is effectively ensured to be equal, and the uniformity of the heat treatment process is ensured.
Further, referring to fig. 4-7, the conveying mechanism 2 is provided with a plurality of stabilizing mechanisms 7, each stabilizing mechanism 7 includes a stabilizing support 71 (in actual use, the stabilizing support 71 is a common triaxial stabilizing structure (such as a mobile cradle head) in the prior art, and the specific structure and working principle thereof will not be repeated here), a loading tray 72 and a driving connection member 73; one end of the stabilizing support 71 is fixed with the loading tray 72, the other end of the stabilizing support 71 is fixed with the driving connecting piece 73, the loading tray 72 is used for bearing an aluminum alloy die casting, and one end, close to the conveying mechanism 2, of the driving connecting piece 73 can be embedded into the conveying mechanism 2; the stabilizing bracket 71 can maintain the horizontal state of the loading tray 72 during the movement of the loading tray 72 along with the driving link 73 under the driving of the conveying mechanism 2.
The driving connector 73 comprises a connecting frame 731, a driving motor 732, a driving gear 733 and a stabilizing stop lever 734; the connecting frame 731 is fixed to the stabilizing frame 71, the driving motor 732 is fixed to the connecting frame 731 on a side away from the conveying mechanism 2, the driving gear 733 is fixed coaxially with an output shaft of the driving motor 732, and one end of the stabilizing stopper 734 is fixed to the connecting frame 731 on a side close to the conveying mechanism 2.
The linear conveying unit 21 includes a linear conveying rail 211 and a linear limit rail 212, and the corner conveying unit 22 includes a corner conveying rail 221 and a corner limit rail 222; the two adjacent linear conveying units 21 and the angle conveying unit 22 are communicated with each other, the linear conveying rail 211 is communicated with the angle conveying rail 221, and the linear limiting rail 212 is communicated with the angle limiting rail 222; the two adjacent linear conveying units 21 are communicated with each other, and the two linear conveying rails 211 are communicated with each other, and the two linear limit rails 212 are communicated with each other.
Both the linear conveying rail 211 and the bevel conveying rail 221 comprise limiting teeth; the drive gear 733 is capable of meshing with the stopper teeth when moving into the linear conveying rail 211 and the angled conveying rail 221; one end of the stabilizing limit rod 734, which is far away from the connecting frame 731, can be embedded into any linear limit rail 212 and any angle limit rail 222; the whole driving connector 73 is driven to move by the driving motor 732 through the gear engagement between the driving gear 733 and the limiting teeth, and meanwhile, the stabilizing limiting rod 734 is driven to move inside the linear limiting rail 212 and the bevel limiting rail 222.
Thus, in actual use, the two adjacent linear conveying units 21 and the angle conveying unit 22 are communicated with each other, the linear conveying rail 211 and the angle conveying rail 221 are communicated with each other, and the linear limit rail 212 and the angle limit rail 222 are communicated with each other; the two adjacent linear conveying units 21 are communicated with each other, the two linear conveying rails 211 are communicated with each other, the two linear limiting rails 212 are communicated with each other, so that in the whole conveying mechanism 2, each linear conveying rail 211 and each corner conveying rail 221 jointly form a conveying path from the feed port 11 to the discharge port 12, each linear limiting rail 212 and each corner limiting rail 222 jointly form a limiting path from the feed port 11 to the discharge port 12, under the driving of the driving motor 732, the whole driving connecting piece 73 is driven to move through the gear engagement between the driving gear 733 and the limiting teeth in the conveying path, meanwhile, the driving stabilizing limiting rod 734 is driven to move in the limiting path formed by the linear limiting rails 212 and the corner limiting rails 222, the driving connecting piece 73 is stably driven to move, and meanwhile, under the stabilizing action of the stabilizing support 71, the stabilizing support 71 keeps the horizontal state of the loading tray 72, aluminum alloy die castings loaded in the loading tray 72 are conveyed along the path from the feed port 11 to the discharge port 12, and simultaneously, the aluminum alloy die castings loaded in the loading tray are rotated in each temperature zone 13, and the aluminum alloy die castings are guaranteed to be heated in each temperature zone 13.
Further, referring to fig. 2-3 and 5, the air supply mechanism 3 includes an air pump 31 and a plurality of air supply pipes 32, each air supply pipe 32 is communicated with the air pump 31, and the air supplied from the air pump 31 to each air supply pipe 32 is a protective gas; each air supply pipeline 32 corresponds to one temperature partition 13, the air supply pipeline 32 is arranged on the inner wall of the heat preservation furnace body 1 corresponding to each temperature partition 13, and the winding mode of the air supply pipeline 32 is the same as that of the corresponding linear conveying rail 211 and the corresponding bevel conveying rail 221.
A plurality of exhaust holes are formed in one side, close to the corresponding linear conveying rail 211 and the corresponding bevel conveying rail 221, of each air supply pipeline 32, and the air discharge direction of each exhaust hole has a given included angle with the air supply direction of the air supply pipeline 32 at the current position of the exhaust hole, and the given included angle is smaller than 90 degrees.
The inner wall of each air supply pipeline 32 is internally provided with a heating wire, and the temperature of the air discharged from the air discharge hole of each air supply pipeline 32 is equal to the temperature of the temperature partition 13 where the current air supply pipeline 32 is positioned under the action of the heating wire on the inner wall of each air supply pipeline 32; the gas source of the feed gas curtain 4 is the gas supply pipeline 32 corresponding to the temperature partition 13 closest to the feed inlet 11, and the gas source of the discharge gas curtain 5 is the gas supply pipeline 32 corresponding to the temperature partition 13 closest to the discharge outlet 12.
Therefore, in actual use, the protection gas is supplied to each gas supply pipeline 32 through the gas pump 31, then under the action of the heating wires on the inner wall of each gas supply pipeline 32 in the transportation process of each gas supply pipeline 32, the temperature of the gas discharged from the gas discharge holes of each gas supply pipeline 32 is equal to the temperature of the temperature partition 13 where the current gas supply pipeline 32 is positioned, so that the protection gas conveyed by the gas supply pipeline 32 is prevented from being heated in each temperature partition 13, the temperature imbalance in each temperature partition 13 is avoided, the gas flow discharged through the action of the gas discharge holes on the surface of the gas supply pipeline 32 can provide the gas flow circulation in each temperature partition 13, the gas flow direction output by each gas discharge hole is opposite to the rotation direction of the aluminum alloy die casting driven by the current conveying mechanism 2, the heat carried by the gas flow can be more effectively conducted to the aluminum alloy die casting through the positive full collision between the gas flow and the aluminum alloy die casting, and the heat treatment process of the aluminum alloy die casting is promoted; and when in actual use, the gas source of the feeding gas curtain 4 is the gas supply pipeline 32 corresponding to the temperature partition 13 closest to the feeding hole 11, the gas source of the discharging gas curtain 5 is the gas supply pipeline 32 corresponding to the temperature partition 13 closest to the discharging hole 12, so that impurities in air are prevented from entering the aluminum alloy die casting in the heat treatment process, and meanwhile, the aluminum alloy die casting and the external environment can be smoothly transited through the heat protection gas of the feeding gas curtain 4 and the discharging gas curtain 5, so that the smoothness of the heat treatment process of the aluminum alloy die casting is improved, the phenomena of quenching and sudden heating are avoided, and the temperature gradient uniformity of the aging treatment of the aluminum box die casting is ensured.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a heat treatment furnace of aluminum alloy die casting, includes heat preservation furnace body (1), its characterized in that: the aluminum alloy die casting furnace is characterized in that a conveying mechanism (2) is arranged in the heat-preserving furnace body (1), the heat-preserving furnace body (1) comprises a feed inlet (11) and a discharge outlet (12), and the conveying mechanism (2) can convey an aluminum alloy die casting from the feed inlet (11) to the discharge outlet (12);
The aluminum alloy die casting device is characterized in that a plurality of temperature partitions (13) are arranged in the heat preservation furnace body (1), the temperature of each temperature partition (13) can be adjusted independently of the other temperature partitions (13), and the conveying mechanism (2) can convey an aluminum alloy die casting from the feeding hole (11) to the discharging hole (12) in a conveying way and simultaneously rotate in each temperature partition (13);
An air supply mechanism (3) is arranged outside the heat preservation furnace body (1), the air supply mechanism (3) can supply air to each temperature partition (13) respectively, and air flow circulation inside each temperature partition (13) is provided to maintain the temperature inside each temperature partition (13) to be equal;
inside each temperature partition (13), the air flow direction provided by the air supply mechanism (3) is opposite to the rotation direction of the aluminum alloy die casting driven by the conveying mechanism (2);
The heat-preserving furnace comprises a heat-preserving furnace body (1), a feeding air curtain (4) is arranged on the outer side of a feeding hole (11), a discharging air curtain (5) is arranged on the outer side of a discharging hole (12) on the outer wall of the heat-preserving furnace body (1), and the feeding air curtain (4) and the discharging air curtain (5) are used for isolating a heating cavity in the heat-preserving furnace body (1) from the external environment of the heat-preserving furnace body (1);
The feeding hole (11) and the discharging hole (12) are both arranged on one side of the heat-preserving furnace body (1), the conveying mechanism (2) comprises a plurality of linear conveying units (21) and a plurality of bevel conveying units (22), and two ends of each bevel conveying unit (22) can be respectively connected with the linear conveying units (21);
Inside each of the linear conveying units (21), aluminum alloy die castings can be conveyed along a straight line; inside each folded angle conveying unit (22), the conveying path of the aluminum alloy die casting can convey at a 90-degree angle;
the angle-folding conveying units (22) and the linear conveying units (21) are matched with each other, and can be combined into any conveying path from the feed inlet (11) to the discharge outlet (12);
inside each linear conveying unit (21) and each dog-ear conveying unit (22), the total length and the rotation angle of the conveying path of the aluminum alloy die casting are the same, and each linear conveying unit (21) and each dog-ear conveying unit (22) correspond to one temperature partition (13);
The inner wall of the heat preservation furnace body (1) is provided with heating assemblies (6) corresponding to each temperature partition (13), heating wires are arranged in each heating assembly (6), and each heating assembly (6) can respectively adjust the temperature of each temperature partition (13) by respectively adjusting the input power of the heating wires in the heating assembly;
The conveying mechanism (2) is provided with a plurality of stabilizing mechanisms (7) in a mounting way, and each stabilizing mechanism (7) comprises a stabilizing bracket (71), a loading tray (72) and a driving connecting piece (73);
One end of the stabilizing support (71) is fixed with the loading tray (72), the other end of the stabilizing support (71) is fixed with the driving connecting piece (73), the loading tray (72) is used for bearing an aluminum alloy die casting, and one end, close to the conveying mechanism (2), of the driving connecting piece (73) can be embedded into the conveying mechanism (2);
The stabilizing support (71) can keep the horizontal state of the loading tray (72) during the movement of the loading tray (72) along with the driving connecting piece (73) under the driving of the conveying mechanism (2);
the driving connecting piece (73) comprises a connecting frame (731), a driving motor (732), a driving gear (733) and a stabilizing limit rod (734);
The connecting frame (731) is fixed with the stabilizing support (71), the driving motor (732) is fixed on one side, far away from the conveying mechanism (2), of the connecting frame (731), the driving gear (733) is coaxially fixed with an output shaft of the driving motor (732), and one end of the stabilizing limiting rod (734) is fixed on one side, close to the conveying mechanism (2), of the connecting frame (731);
The linear conveying unit (21) comprises a linear conveying rail (211) and a linear limit rail (212), and the bevel conveying unit (22) comprises a bevel conveying rail (221) and a bevel limit rail (222);
The two adjacent linear conveying units (21) and the folding angle conveying unit (22) are communicated with each other, the linear conveying rail (211) is communicated with the folding angle conveying rail (221), and the linear limit rail (212) is communicated with the folding angle limit rail (222);
the two adjacent linear conveying units (21) are communicated with each other, the two linear conveying rails (211) are communicated with each other, and the two linear limit rails (212) are communicated with each other;
The linear conveying track (211) and the bevel conveying track (221) comprise limiting teeth;
the driving gear (733) can be meshed with the limit teeth when moving into the linear conveying track (211) and the bevel conveying track (221);
One end of the stabilizing limit rod (734) far away from the connecting frame (731) can be embedded into any linear limit rail (212) and any folded angle limit rail (222);
Under the driving of the driving motor (732), the driving gear (733) is meshed with the gears of the limiting teeth to drive the whole driving connecting piece (73) to move, and meanwhile, the stable limiting rod (734) is driven to move inside the linear limiting rail (212) and the angle limiting rail (222);
The air supply mechanism (3) comprises an air pump (31) and a plurality of air supply pipelines (32), each air supply pipeline (32) is communicated with the air pump (31), and the air supplied by the air pump (31) to each air supply pipeline (32) is protective air;
Each air supply pipeline (32) corresponds to one temperature partition (13), each air supply pipeline (32) is arranged on the inner wall of the heat preservation furnace body (1) corresponding to each temperature partition (13), and the winding mode of each air supply pipeline (32) is the same as that of the corresponding linear conveying track (211) and the corresponding bevel conveying track (221).
2. The heat treatment furnace for aluminum alloy die castings according to claim 1, wherein: a plurality of exhaust holes are formed in one side, close to the corresponding linear conveying track (211) and the corresponding bevel conveying track (221), of each air supply pipeline (32), the air discharge direction of each exhaust hole has a given included angle with the air supply direction of the air supply pipeline (32) at the current position of the exhaust hole, and the given included angle value is smaller than 90 degrees.
3. A heat treatment furnace for aluminum alloy die castings according to claim 2, wherein: the inner walls of the air supply pipelines (32) are internally provided with heating wires, and the temperature of the air discharged from the air discharge holes of the air supply pipelines (32) is equal to the temperature of the temperature partition (13) where the air supply pipelines (32) are positioned currently under the action of the heating wires of the inner walls of the air supply pipelines (32);
The gas source of the feeding gas curtain (4) is the gas supply pipeline (32) corresponding to the temperature partition (13) closest to the feeding hole (11), and the gas source of the discharging gas curtain (5) is the gas supply pipeline (32) corresponding to the temperature partition (13) closest to the discharging hole (12).
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| JP2022042560A (en) * | 2020-09-03 | 2022-03-15 | 株式会社ノリタケカンパニーリミテド | Heat treatment furnace and method for producing inorganic material using heat treatment furnace |
| CN116695033A (en) * | 2023-05-22 | 2023-09-05 | 苏州爱盟机械有限公司 | Aluminum alloy bicycle die casting heat treatment device and heat treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204975263U (en) * | 2015-08-04 | 2016-01-20 | 滨州盟威戴森汽车轮毂制造有限公司 | Aluminum alloy wheel hub casting system |
| CN108611479A (en) * | 2018-07-19 | 2018-10-02 | 南通高新工业炉有限公司 | A kind of aluminium alloy continuous heat-treating drier |
| JP2022042560A (en) * | 2020-09-03 | 2022-03-15 | 株式会社ノリタケカンパニーリミテド | Heat treatment furnace and method for producing inorganic material using heat treatment furnace |
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