CN113667868A - Manufacturing method of corrosion-resistant 7-series aluminum alloy capable of being quenched on line - Google Patents
Manufacturing method of corrosion-resistant 7-series aluminum alloy capable of being quenched on line Download PDFInfo
- Publication number
- CN113667868A CN113667868A CN202110892007.9A CN202110892007A CN113667868A CN 113667868 A CN113667868 A CN 113667868A CN 202110892007 A CN202110892007 A CN 202110892007A CN 113667868 A CN113667868 A CN 113667868A
- Authority
- CN
- China
- Prior art keywords
- plate
- fixedly connected
- casting
- crucible
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
- C22F1/053—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 of alloys with zinc as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses a method for manufacturing a corrosion-resistant 7-series aluminum alloy capable of being quenched on line, which relates to the field of aluminum alloy section manufacturing, and comprises the following raw materials in percentage by mass: less than or equal to 0.10 percent of Si, less than or equal to 0.2 percent of Fe, 0.15 to 0.3 percent of Cu, Mn: 0.3-0.4%, Mg: 1.7-2.3%, Cr: 0.05-0.15%, Zn: 6.6-7.2%, Ti is less than or equal to 0.1%, Zr: 0.1-0.25%, other elements are less than or equal to 0.05% singly, the sum is less than or equal to 0.15%, and the rest is Al; the 7-series alloy can be quenched on line, the production period of the product is reduced, the tensile strength can reach more than 500MPa, and meanwhile, the 7-series alloy has low stress corrosion sensitivity and excellent stress corrosion resistance; in addition, the 7-series alloy can be applied to structural members such as automobile anti-collision beams and the like which need high strength, and meanwhile, when the crucible is installed in a furnace body and heated, an electrical element is separated from the crucible, so that the electrical element is prevented from being damaged when the temperature is too high.
Description
Technical Field
The invention relates to the field of aluminum alloy section bar manufacturing, in particular to a method for manufacturing a corrosion-resistant 7-series aluminum alloy capable of being quenched on line.
Background
Along with the development of light weight of automobiles, the application of aluminum alloy instead of steel is more and more frequent, but the strength of 6 series aluminum alloy is low, and the structure which needs high strength partially cannot be replaced by 6 series aluminum alloy, while the common 7 series aluminum alloy has extremely high strength, but the product needs to be quenched off line in the production process, the production period is increased, the production cost is increased, and the product is seriously deformed due to off line quenching, so that the yield of the product is reduced.
Although some 7 series aluminum alloys, such as 7003, 7005, etc., can be quenched on line, the strength is less than 400MPa, which cannot meet the requirement, and meanwhile, electrical elements cannot be separated from the crucible when the crucible in the smelting furnace is heated, and the electrical elements are easily damaged when the temperature is too high.
The invention provides a corrosion-resistant 7-series aluminum alloy which can be quenched on line and has the strength of 500 MPa.
Disclosure of Invention
The invention aims to provide a method for manufacturing a corrosion-resistant 7-series aluminum alloy capable of being quenched on line, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following raw materials in percentage by mass: less than or equal to 0.10 percent of Si, less than or equal to 0.2 percent of Fe, 0.15 to 0.3 percent of Cu, Mn: 0.3-0.4%, Mg: 1.7-2.3%, Cr: 0.05-0.15%, Zn: 6.6-7.2%, Ti is less than or equal to 0.1%, Zr: 0.1-0.25%, other elements are less than or equal to 0.05% singly, the sum is less than or equal to 0.15%, and the rest is Al.
A method for manufacturing corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following specific steps:
1) smelting treatment: smelting aluminum alloy according to the mass fraction: sequentially adding an aluminum ingot, an aluminum-copper intermediate alloy, an aluminum-manganese intermediate alloy, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy, a zinc ingot and the like into a smelting furnace for smelting, after the ingredients are completely melted, scattering a slag cleaning agent for removing slag, performing electromagnetic stirring for more than 2 times, and adding a magnesium ingot into the melt and stirring when the melt temperature reaches 730-; controlling the temperature of the melt at 720-780 ℃;
2) furnace guiding and refining: introducing the melt obtained in the step 1) into a standing furnace through a furnace guide groove, introducing a No. 2 refining agent into the melt by using argon gas for refining, and then slagging off;
3) heating and standing: controlling the temperature of the melt obtained in the step 2) at 755-775 ℃, and standing for 30 min;
4) casting: casting the melt obtained in the step 3), and adding a proper amount of Al-Ti-B wires on line during casting, wherein the casting speed is controlled at 70-100mm/min, and the cooling water flow is controlled at 50-90L/min;
5) homogenizing cast ingots: homogenizing the ingot obtained in the step 4), keeping the temperature for 16h at the homogenizing temperature of 450 ℃ and 460 ℃, and then discharging and air cooling;
6) removing a segregation layer from the cast ingot: turning the ingot casting wagon obtained in the step 5) for 2-4mm, and removing the segregation layer on the periphery of the ingot casting;
7) profile extrusion: heating the ingot obtained in the step 6) to 480-;
8) aging of the section bar: and (3) carrying out aging treatment on the section obtained in the step 7), heating to 100 ℃, preserving heat for 5h, then heating to 138 ℃, preserving heat for 12h, and then discharging from the furnace and air cooling.
A manufacturing device of corrosion-resistant series aluminum alloy capable of being quenched on line comprises a smelting furnace, a standing furnace, a casting blanking pipe, a casting machine, a conveying roller, a homogenizing box, a segregation layer removing box, an extrusion molding machine and a section aging treatment machine, the smelting furnace is used for smelting alloy, the standing furnace is used for standing alloy melt, the bottom of the standing furnace is connected with a casting blanking pipe, the casting blanking pipe is connected with a casting machine for casting, the casting machine is connected with a conveying roller for conveying materials, the conveying roller conveys the casting parts cast by the casting machine into the homogenizing box for homogenizing treatment, the conveying roller conveys the ingot homogenized in the homogenizing box into the segregation layer removing box for removing the segregation layer on the periphery of the ingot, the conveying roller conveys the ingot with the segregation layer removing box removing the segregation layer on the periphery of the ingot to an extrusion molding machine for profile extrusion, and the extruded cavity structural profile enters the profile aging treatment machine for profile aging treatment;
the smelting furnace comprises a furnace body, wherein a second thread heater is fixedly connected to the inner bottom of the furnace body, a first thread heater is fixedly connected to the side wall of the furnace body, and the second thread heater and the first thread heater are both used for electromagnetic heating;
the inner top of the smelting furnace is connected with a positioning structure, the positioning structure is connected with a crucible, the crucible is connected with a height adjusting structure for adjusting the height of the crucible, the height adjusting structure comprises a connecting block, a convex ring, a driving motor, a first polygonal jack, a second toothed plate, a rotating shaft, a second gear ring, a second limiting chute, an n-shaped plate, a convex block, an n-shaped connecting plate, a rotating shaft, a second limiting straight groove, a cylinder, a straight plate, a polygonal inserted rod, a second polygonal jack and an L-shaped block, the connecting block is symmetrically and fixedly arranged on two sides of the top of the crucible, the connecting block is provided with the first polygonal jack in the horizontal direction, the side wall of the n-shaped plate is fixedly connected with the driving motor, the output shaft of the driving motor is fixedly connected with the rotating shaft, the rotating shaft is symmetrically and fixedly connected with the second gear ring, and the second gear ring is meshed with the second toothed plate, the side wall of the second toothed plate is provided with a second limiting sliding groove, the top of the n-shaped plate is symmetrically provided with a second limiting straight groove, the side wall of the second toothed plate and the side wall of the second limiting sliding groove are in fit sliding connection with the second limiting straight groove, the bottom of the second toothed plate is fixedly connected with an L-shaped block, the middle lower end of the L-shaped block is provided with a second polygonal jack, the second polygonal jack is the same as the first polygonal jack in size, the middle upper end of the L-shaped block is fixedly connected with an air cylinder, the output end of the air cylinder faces outwards, the output end of the air cylinder is fixedly connected with a straight plate, the top of the straight plate is fixedly connected with a polygonal inserted rod matched with the first polygonal jack and the second polygonal jack for use, the top of the n-shaped plate is fixedly connected with a convex block, two ends of the top of the convex block are rotatably connected with a rotating shaft, and the outer end of the rotating shaft is fixedly connected with the bottom of the inner wall of the n-shaped connecting plate, the top of the n-shaped connecting plate is fixedly connected with a convex ring;
the anti-shaking structure comprises a brake plate, a sliding rod, a sliding iron block, an electromagnet, a triangular connecting plate, a spring, a sleeve and a straight groove, the straight groove is formed in the top of the convex block, the sleeve is fixedly connected to the bottom in the straight groove, the spring and the electromagnet are fixedly connected to the inner bottom of the sleeve, the sliding iron block is fixedly connected to the top of the spring and is in contact with the inner wall of the sleeve in a fitting manner, the sliding rod is fixedly connected to the top of the sliding iron block, the brake plate is fixedly connected to the top of the sliding rod, and the top of the brake plate is in contact with the bottom of the n-shaped connecting plate in a fitting manner;
the crucible sealing device comprises a rotating shaft, a sealing structure and a sealing structure, wherein the rotating shaft is connected with the sealing structure for sealing a crucible, the sealing structure comprises a cover plate, a first toothed plate, a first gear ring, a first limiting sliding groove and a first limiting straight groove, the top of an n-shaped plate is provided with the first limiting straight groove, the side wall of the first toothed plate is provided with the first limiting sliding groove, the inner wall of the first toothed plate and the inner wall of the first limiting sliding groove are in limiting fit sliding connection with the first limiting straight groove, the first toothed plate is in meshing connection with the first gear ring, the first toothed plate and the second toothed plate are respectively arranged on two sides of the first toothed ring, the first toothed ring is fixedly installed at the middle end of the rotating shaft and in meshing connection, the bottom of the first toothed ring is fixedly connected with the cover plate, and when the cover plate moves to the inner top of the crucible, a polygonal inserted rod moves to the uppermost end;
the top of apron is connected with the sealed feed structure who is used for sealed material loading, sealed feed structure includes inlet pipe, slot, oblique cover and oblique baffle, the oblique cover of top feed inlet department fixedly connected with of apron, the even fixedly connected with slot in bottom inclined plane of oblique cover, the even laminating rotation in interior top inclined plane of oblique cover is connected with oblique baffle, baffle and slot laminating contact when the baffle rotates the lower extreme to one side, the top fixedly connected with inlet pipe of oblique cover.
Furthermore, the top of the two ends of the standing furnace is fixedly connected with an air inlet pipe and an air outlet pipe for argon circulation respectively.
Furthermore, the positioning structure comprises a slot and an insert block, the slot is uniformly arranged on the inner top of the furnace body along the circumferential direction, and the insert block is inserted in the slot.
Furthermore, the insert blocks are uniformly and fixedly arranged at the bottom of the crucible along the circumferential direction.
Furthermore, the n-shaped plate is rotatably connected with the rotating shaft through a bearing fixedly connected with the n-shaped plate.
Furthermore, the cover plate moves to the uppermost end when the polygonal inserted link moves to the lowermost end.
Further, the spring is sleeved at the outer side of the electromagnet.
Furthermore, the crucible is moved to the position where the electromagnet is powered off, the spring pushes the sliding iron block to move upwards, and the sliding iron block pushes the brake plate to move upwards through the sliding rod to be in contact with the inner top of the n-shaped connecting plate in an attaching mode, so that the convex block is prevented from rotating along with the n-shaped connecting plate.
The invention has the beneficial effects that:
the invention drives a straight plate to move by an air cylinder of a height adjusting structure, the straight plate drives a polygonal inserted rod to move in a second polygonal inserted hole, the second polygonal inserted hole is inserted in a first polygonal inserted hole of a connecting block, a hoisting structure drives a crucible to move to the position right above a furnace body by a convex ring, a driving motor drives a rotating shaft to rotate, the rotating shaft drives a second gear to rotate, the second gear drives the second gear to move downwards, the second gear drives the polygonal inserted rod to move downwards, the polygonal inserted rod moves downwards towards the crucible by the first polygonal inserted hole, the crucible drives the furnace body to the inside, the crucible is convenient to be fixedly arranged in the furnace body, then the air cylinder drives the straight plate to move, the straight plate drives the polygonal inserted rod to move into the second polygonal inserted hole, the second polygonal inserted hole is separated from the first polygonal inserted hole, then the driving motor drives the rotating shaft to rotate, and the rotating shaft drives the second gear to rotate, the second gear ring drives the second gear plate to move upwards, the second gear plate drives the polygonal inserted link to move upwards, and an electrical element is separated from the crucible when the crucible is installed in the furnace body and heated, so that the electrical element is prevented from being damaged when the temperature is too high;
according to the invention, when the polygonal inserted link moves upwards, the rotating shaft drives the first gear ring of the plugging structure to rotate, the first gear ring drives the first toothed plate to move downwards, the first toothed plate drives the cover plate to move to the upper inner part of the crucible, the cover plate plugs the top of the crucible, so that hot air in the crucible is prevented from overflowing outwards, and the crucible is favorably subjected to rapid heating treatment;
when the sealed feeding structure is used for feeding, the raw materials push the inclined baffle of the sealed feeding structure to rotate, the raw materials are added into the crucible through a gap between the slot and the inclined baffle, and after heating is finished, the inclined baffle is in contact with the slot in a fit manner to block the inclined sleeve, so that hot gas is prevented from being discharged from the feeding pipe;
according to the invention, the electromagnet of the shaking prevention structure is powered off when the crucible moves, the restoring force of the spring pushes the sliding iron block to move, the sliding iron block pushes the sliding rod to move, the sliding rod drives the braking plate to be in contact with the n-shaped connecting plate in a laminating manner, the n-shaped connecting plate is fixed and limited on the convex block, shaking does not occur when the crucible moves, the stability of the crucible is ensured, the electromagnet is electrified when the crucible needs to be stirred, the electromagnet is electrified to generate magnetism to suck the sliding iron block downwards, the sliding iron block drives the braking plate to be separated from the n-shaped connecting plate, the convex block is convenient to rotate along the n-shaped connecting plate, and the fixed crucible is convenient to rotate to a discharging angle.
The 7-series alloy can be quenched on line, the production period of the product is reduced, the tensile strength can reach more than 500MPa, and meanwhile, the 7-series alloy has low stress corrosion sensitivity and excellent stress corrosion resistance; in addition, the 7-series alloy can be used for structural members requiring high strength, such as automobile impact beams.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method of manufacturing the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the construction of the melting furnace of the present invention;
FIG. 4 is a top view of the melting furnace structure of the present invention;
FIG. 5 is a left top view of the structure of the melting furnace of the present invention;
FIG. 6 is a sectional view of the construction of the melting furnace of the present invention;
FIG. 7 is a cross-sectional view of a melting furnace and its connection structure of the present invention;
FIG. 8 is a sectional view of the structure of an n-shaped connecting plate and a connecting joint thereof according to the present invention;
FIG. 9 is an enlarged view of the structure at A of FIG. 3 according to the present invention;
FIG. 10 is an enlarged view of the structure at B of FIG. 5 according to the present invention;
FIG. 11 is an enlarged view of the structure of FIG. 7 at C according to the present invention;
FIG. 12 is a schematic view of the feed tube and its connection structure of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. smelting furnace 101, furnace body 102, feed pipe 103, crucible 104, connecting block 105, convex ring 106, driving motor 107, cover plate 108, first polygonal jack 109, first toothed plate 110, second toothed plate 111, rotating shaft 112, second toothed ring 113, first toothed ring 114, second limiting chute 115, n-shaped plate 116, first limiting chute 117, convex block 118, first thread heater 119, second thread heater 120, slot 121, insert block 122, n-shaped connecting plate 123, brake plate 124, sliding rod 125, sliding iron block 126, rotating shaft 127, electromagnet 128, triangular connecting plate 129, spring 130, sleeve 131, straight groove 132, second limiting straight groove 133, cylinder 134, straight plate 135, polygonal insert rod 136, second polygonal jack 137, L-shaped block 138, first limiting straight groove 139, inclined sleeve 140, inclined baffle 2, standing furnace 201, feed pipe 202, outlet pipe 3, inclined pipe 3, and inclined pipe 110 Casting a blanking pipe 4, a casting machine 5, a conveying roller 6, a homogenizing box 7, a segregation layer removing box 8, an extrusion molding machine 9 and a section aging treatment machine.
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 present invention will be further described with reference to the following examples.
Example one
In this embodiment, a corrosion-resistant 7-series aluminum alloy capable of being quenched on line includes the following raw materials in percentage by mass: 0.01% of Si, 1% of Fe, 0.15% of Cu, Mn: 0.4%, Mg: 1.7%, Cr: 0.05%, Zn: 7.2%, Ti:0.04%, Zr: 0.25 percent, less than or equal to 0.05 percent of other elements singly, less than or equal to 0.15 percent of the total, and the rest is Al.
A method for manufacturing corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following specific steps:
1) smelting treatment: smelting aluminum alloy according to the mass fraction: sequentially adding an aluminum ingot, an aluminum-copper intermediate alloy, an aluminum-manganese intermediate alloy, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy, a zinc ingot and the like into a smelting furnace for smelting, after the ingredients are completely melted, scattering a slag removing agent for removing slag, performing electromagnetic stirring for more than 2 times, and when the temperature of a melt reaches 733 ℃, adding a magnesium ingot into the melt and stirring; controlling the temperature of the melt at 760 ℃;
2) furnace guiding and refining: introducing the melt obtained in the step 1) into a standing furnace through a furnace guide groove, introducing a No. 2 refining agent into the melt by using argon gas for refining, and then slagging off;
3) heating and standing: controlling the temperature of the melt obtained in the step 2) at 775 ℃, and standing for 30 min;
4) casting: casting the melt obtained in the step 3), adding a proper amount of Al-Ti-B wires on line during casting, controlling the casting speed at 100mm/min and controlling the cooling water flow at 50L/min;
5) homogenizing cast ingots: homogenizing the ingot obtained in the step 4), keeping the temperature at 450 ℃ for 16h, and then discharging from the furnace and air cooling;
6) removing a segregation layer from the cast ingot: turning 4mm of the ingot obtained in the step 5), and removing a segregation layer on the periphery of the ingot;
7) profile extrusion: heating the ingot obtained in the step 6) to 480 ℃, selecting a section with a cavity structure in a shape like the Chinese character 'ri' for the die, and carrying out online forced air cooling extrusion production at the speed of 4 m/min;
8) aging of the section bar: and (3) carrying out aging treatment on the section obtained in the step 7), heating to 100 ℃, preserving heat for 5h, then heating to 138 ℃, preserving heat for 12h, and then discharging from the furnace and air cooling.
9) And (3) performance detection: and (3) detecting the mechanical property and the stress corrosion property of the section obtained in the step 8).
Example two
The corrosion-resistant 7-series aluminum alloy capable of being quenched on line in the embodiment comprises the following raw materials in percentage by mass: 0.03% of Si, 0.2% of Fe, 0.23% of Cu, Mn: 0.3%, Mg: 2.3%, Cr: 0.15%, Zn: 6.6%, Ti:0.1%, Zr: 0.12 percent, less than or equal to 0.05 percent of other elements singly, less than or equal to 0.15 percent of the total, and the rest is Al.
A method for manufacturing corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following specific steps:
1) smelting treatment: smelting aluminum alloy according to the mass fraction: sequentially adding an aluminum ingot, an aluminum-copper intermediate alloy, an aluminum-manganese intermediate alloy, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy, a zinc ingot and the like into a smelting furnace for smelting, after the ingredients are completely melted, scattering a slag removing agent for removing slag, performing electromagnetic stirring for more than 2 times, and when the temperature of the melt reaches 730 ℃, adding a magnesium ingot into the melt and stirring; controlling the temperature of the melt at 720 ℃;
2) furnace guiding and refining: introducing the melt obtained in the step 1) into a standing furnace through a furnace guide groove, introducing a No. 2 refining agent into the melt by using argon gas for refining, and then slagging off;
3) heating and standing: controlling the temperature of the melt obtained in the step 2) to be 755 ℃, and standing for 30 min;
4) casting: casting the melt obtained in the step 3), and adding a proper amount of Al-Ti-B wires on line during casting, wherein the casting speed is controlled at 80mm/min, and the cooling water flow is controlled at 70L/min;
5) homogenizing cast ingots: homogenizing the ingot obtained in the step 4), keeping the temperature at 460 ℃ for 16h, and then discharging and air cooling;
6) removing a segregation layer from the cast ingot: turning the ingot obtained in the step 5) for 3mm, and removing a segregation layer on the periphery of the ingot;
7) profile extrusion: heating the cast ingot obtained in the step 6) to 495 ℃, selecting a section bar with a cavity structure in a shape like the Chinese character 'ri' for the die, and carrying out online forced air cooling extrusion production at the speed of 3 m/min;
8) aging of the section bar: and (3) carrying out aging treatment on the section obtained in the step 7), heating to 100 ℃, preserving heat for 5h, then heating to 138 ℃, preserving heat for 12h, and then discharging from the furnace and air cooling.
9) And (3) performance detection: and (3) detecting the mechanical property and the stress corrosion property of the section obtained in the step 8).
EXAMPLE III
In this embodiment, the corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following raw materials in percentage by mass: 0.1% of Si, 0.15% of Fe, 0.3% of Cu, Mn: 0.33%, Mg: 1.9%, Cr: 0.09%, Zn: 7.1%, Ti:0.08%, Zr: 0.18 percent, less than or equal to 0.05 percent of other elements, less than or equal to 0.15 percent of the total, and the rest is Al.
A method for manufacturing corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following specific steps:
1) smelting treatment: smelting aluminum alloy according to the mass fraction: adding aluminum ingots, aluminum-copper intermediate alloys, aluminum-manganese intermediate alloys, aluminum-chromium intermediate alloys, aluminum-zirconium intermediate alloys, zinc ingots and the like into a smelting furnace in sequence for smelting, scattering a slag cleaning agent for deslagging after the ingredients are completely melted, performing electromagnetic stirring for more than 2 times, adding magnesium ingots into the melt when the temperature of the melt reaches 740 ℃, and stirring; controlling the temperature of the melt at 780 ℃;
2) furnace guiding and refining: introducing the melt obtained in the step 1) into a standing furnace through a furnace guide groove, introducing a No. 2 refining agent into the melt by using argon gas for refining, and then slagging off;
3) heating and standing: controlling the temperature of the melt obtained in the step 2) to 765 ℃, and standing for 30 min;
4) casting: casting the melt obtained in the step 3), and adding a proper amount of Al-Ti-B wires on line during casting, wherein the casting speed is controlled at 70mm/min, and the cooling water flow is controlled at 90L/min;
5) homogenizing cast ingots: homogenizing the ingot obtained in the step 4), keeping the temperature at 455 ℃ for 16h, and then discharging from the furnace and air cooling;
6) removing a segregation layer from the cast ingot: turning the ingot casting wagon obtained in the step 5) for 2mm, and removing the segregation layer on the periphery of the ingot casting;
7) profile extrusion: heating the ingot obtained in the step 6) to 485 ℃, selecting a section with a cavity structure in a shape like the Chinese character 'ri' for the die, and carrying out online forced air cooling extrusion production at the speed of 2 m/min;
8) aging of the section bar: and (3) carrying out aging treatment on the section obtained in the step 7), heating to 100 ℃, preserving heat for 5h, then heating to 138 ℃, preserving heat for 12h, and then discharging from the furnace and air cooling.
9) And (3) performance detection: and (3) detecting the mechanical property and the stress corrosion property of the section obtained in the step 8).
Example four
In this embodiment, the corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following raw materials in percentage by mass: 0.07% of Si, 0.18% of Fe, 0.3% of Cu, Mn: 0.38%, Mg: 2.1%, Cr: 0.13%, Zn: 6.9%, Ti:0.06%, Zr: 0.13 percent, less than or equal to 0.05 percent of other elements singly, less than or equal to 0.15 percent of the total, and the rest is Al.
A method for manufacturing corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following specific steps:
1) smelting treatment: smelting aluminum alloy according to the mass fraction: sequentially adding an aluminum ingot, an aluminum-copper intermediate alloy, an aluminum-manganese intermediate alloy, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy, a zinc ingot and the like into a smelting furnace for smelting, after the ingredients are completely melted, scattering a slag removing agent for removing slag, performing electromagnetic stirring for more than 2 times, and when the temperature of the melt reaches 738 ℃, adding a magnesium ingot into the melt and stirring; controlling the temperature of the melt at 740 ℃;
2) furnace guiding and refining: introducing the melt obtained in the step 1) into a standing furnace through a furnace guide groove, introducing a No. 2 refining agent into the melt by using argon gas for refining, and then slagging off;
3) heating and standing: controlling the temperature of the melt obtained in the step 2) at 761 ℃, and standing for 30 min;
4) casting: casting the melt obtained in the step 3), adding a proper amount of Al-Ti-B wires on line during casting, controlling the casting speed at 90mm/min and controlling the cooling water flow at 80L/min;
5) homogenizing cast ingots: homogenizing the ingot obtained in the step 4), keeping the temperature for 16h at the homogenizing temperature of 458 ℃, and then discharging from the furnace for air cooling;
6) removing a segregation layer from the cast ingot: turning 4mm of the ingot obtained in the step 5), and removing a segregation layer on the periphery of the ingot;
7) profile extrusion: heating the ingot obtained in the step 6) to 490 ℃, selecting a section with a cavity structure in a shape like the Chinese character 'ri' for the die, and carrying out online forced air cooling extrusion production at the speed of 2 m/min;
8) aging of the section bar: and (3) carrying out aging treatment on the section obtained in the step 7), heating to 100 ℃, preserving heat for 5h, then heating to 138 ℃, preserving heat for 12h, and then discharging from the furnace and air cooling.
9) And (3) performance detection: and (3) detecting the mechanical property and the stress corrosion property of the section obtained in the step 8).
In contrast, the first step of the example is the same as the first step of the example except that in the first step 1), Mn and Cr are not added.
In contrast, the example is different from the example one in the three steps 1), the Zn content is increased, and the rest steps are the same as the example one.
And comparing the third step with the first step, namely, the fourth step 8), wherein the heating temperature is 120 ℃, the heat preservation is carried out for 24 hours, and then the section is taken out of the furnace and air-cooled. The rest of the steps are the same as the first embodiment.
The following table shows the mechanical properties and stress corrosion sensitivity index of each example
| Case(s) | Tensile strength/MPa | Elongation/percent | Stress corrosion susceptibility index ISSRT% |
| Example one | 544 | 10.4 | 1.463 |
| Example two | 528 | 10.4 | 4.618 |
| EXAMPLE III | 513 | 9.5 | 3.752 |
| Example four | 560 | 8.8 | 3.321 |
The tensile strength obtained in the first example is 544MPa, and compared with the second example, the second example does not add elements such as Mn, Cr and the like for improving the stress corrosion resistance of the 7-series alloy, the stress corrosion sensitivity index reaches 4.618%, and the stress corrosion performance is obviously improved. Compared with the third embodiment, in the third embodiment, the Zn content is increased, the strength cannot be released in the on-line quenching process, and the performance is reduced. Compared with the first embodiment, the fourth embodiment adopts the peak aging process, the strength of the alloy is obviously improved, but the corresponding elongation and stress corrosion sensitivity index are also deteriorated. Test results show that the 7-series aluminum alloy can achieve the performance of more than 500MPa under the condition of online air cooling, and the stress corrosion sensitivity index is less than or equal to 3 percent.
EXAMPLE five
Example five is a further modification to example 1.
As shown in fig. 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, the manufacturing device of corrosion-resistant 7-series aluminum alloy capable of on-line quenching comprises a smelting furnace 1, a standing furnace 2, a casting discharging pipe 3, a casting machine 4, a conveying roller 5, a homogenizing box 6, a segregation layer removing box 7, an extrusion forming machine 8 and a section aging processor 9, wherein the smelting furnace 1 is used for smelting alloy, the standing furnace 2 is used for standing alloy melt, the tops of two ends of the standing furnace 2 are respectively and fixedly connected with an air inlet pipe 201 and an air outlet pipe 202 used for argon circulation, the bottom of the standing furnace 2 is connected with the casting discharging pipe 3, the casting discharging pipe 3 is connected with the casting machine 4 used for casting, the casting machine 4 is connected with the conveying roller 5 used for material conveying, the conveying roller 5 conveys casting pieces cast by the casting machine 4 into the homogenizing box 6 for homogenizing treatment, the conveying roller 5 conveys the casting ingots homogenized by the homogenizing box 6 into the segregation layer removing box 7 for removing segregation layers on the periphery of the casting ingots, conveying the ingot with the segregation layer removing box 7 removing the segregation layer on the periphery of the ingot to an extrusion molding machine 8 by a conveying roller 5 for profile extrusion, and feeding the extruded cavity structural profile into a profile aging treatment machine 9 for profile aging treatment;
the smelting furnace 1 comprises a furnace body 101, wherein a second thread heater 119 is fixedly connected to the inner bottom of the furnace body 101, a first thread heater 118 is fixedly connected to the side wall of the furnace body 101, and the second thread heater 119 and the first thread heater 118 are both used for electromagnetic heating;
the inner top of the smelting furnace 1 is connected with a positioning structure, the positioning structure is connected with a crucible 103, the crucible 103 is connected with a height adjusting structure for adjusting the height of the crucible 103, the height adjusting structure comprises a connecting block 104, a convex ring 105, a driving motor 106, a first polygonal jack 108, a second toothed plate 110, a rotating shaft 111, a second gear ring 112, a second limiting sliding groove 114, an n-shaped plate 115, a convex block 117, an n-shaped connecting plate 122, a rotating shaft 126, a second limiting straight groove 132, an air cylinder 133, a straight plate 134, a polygonal inserted link 135, a second polygonal jack 136 and an L-shaped block 137, the connecting block 104 is symmetrically and fixedly installed at two sides of the top of the crucible 103, the connecting block 104 is provided with the first polygonal jack 108 in the horizontal direction, the side wall of the n-shaped plate 115 is fixedly connected with the driving motor 106, the output shaft 111 of the driving motor 106 is fixedly connected with the rotating shaft 111, and the rotating shaft 111 is symmetrically and fixedly connected with the second gear ring 112, the second ring gear 112 is engaged with the second toothed plate 110, the side wall of the second toothed plate 110 is provided with a second limiting sliding groove 114, the top of the n-shaped plate 115 is symmetrically provided with a second limiting straight groove 132, the side wall of the second toothed plate 110 and the side wall of the second limiting sliding groove 114 are in fit sliding connection with the second limiting straight groove 132, the bottom of the second toothed plate 110 is fixedly connected with an L-shaped block 137, the middle lower end of the L-shaped block 137 is provided with a second polygonal jack 136, the second polygonal jack 136 is the same as the first polygonal jack 108 in size, the middle upper end of the L-shaped block 137 is fixedly connected with a cylinder 133, the output end of the cylinder 133 is arranged outwards, the output end of the cylinder 133 is fixedly connected with a straight plate 134, the top of the straight plate 134 is fixedly connected with a polygonal inserted rod 135 matched with the first polygonal jack 108 and the second polygonal jack 136 for use, the top of the n-shaped plate 115 is fixedly connected with a convex block 117, and both ends of the top of the convex block 117 are rotatably connected with a rotating shaft 126, the outer end of the rotating shaft 126 is fixedly connected with the bottom of the inner wall of the n-shaped connecting plate 122, the top of the n-shaped connecting plate 122 is fixedly connected with a convex ring 105, the n-shaped plate 115 is rotatably connected with a rotating shaft 111 through a bearing fixedly connected with the n-shaped plate, a cylinder 133 of the height adjusting structure drives a straight plate 134 to move, the straight plate 134 drives a polygonal inserted bar 135 to move in a second polygonal inserting hole 136, the second polygonal inserting hole 136 is inserted in a first polygonal inserting hole 108 of the connecting block 104, the hoisting structure drives the crucible 103 to move right above the furnace body 101 through the convex ring 105, the driving motor 106 drives the rotating shaft 111 to rotate, the rotating shaft 111 drives a second ring gear 112 to rotate, the second ring gear 112 drives the second ring gear 110 to move downwards, the second ring gear 110 drives the polygonal inserted bar 135 to move downwards, the polygonal inserted bar 135 moves downwards towards the crucible 103 through the first polygonal inserting hole 108, the crucible 103 drives the furnace body 101 to the inside, and facilitates the crucible 103 to be fixedly installed in the furnace body 101, then, the cylinder 133 drives the straight plate 134 to move, the straight plate 134 drives the polygonal inserted rod 135 to move into the second polygonal inserted hole 136, the second polygonal inserted hole 136 is separated from the first polygonal inserted hole 108, then the driving motor 106 drives the rotating shaft 111 to rotate, the rotating shaft 111 drives the second gear ring 112 to rotate, the second gear ring 112 drives the second toothed plate 110 to move upwards, the second toothed plate 110 drives the polygonal inserted rod 135 to move upwards, an electrical component is separated from a crucible when the crucible 103 is installed on the furnace body 101 for heating, and electrical damage caused by overhigh temperature of the component is avoided;
the n-shaped connecting plate 122 is connected with an anti-shaking structure for preventing shaking of the crucible 103, the anti-shaking structure comprises a brake plate 123, a sliding rod 124, a sliding iron block 125, an electromagnet 127, a triangular connecting plate 128, a spring 129, a sleeve 130 and a straight groove 131, the top of the convex block 117 is provided with the straight groove 131, the bottom of the straight groove 131 is fixedly connected with the sleeve 130, the inner bottom of the sleeve 130 is fixedly connected with the spring 129 and the electromagnet 127, the top of the spring 129 is fixedly connected with the sliding iron block 125, the sliding iron block 125 is in contact with the inner wall of the sleeve 130 in an attaching manner, the top of the sliding iron block 125 is fixedly connected with the sliding rod 124, the top of the sliding rod 124 is fixedly connected with the brake plate 123, the top of the brake plate 123 is in contact with the bottom of the n-shaped connecting plate 122, the spring 129 is sleeved on the outer side of the electromagnet 127, the crucible 103 moves to the electromagnet 127 and is powered off, the processing spring 129 pushes the sliding iron block 125 to move upwards, the sliding iron block 125 pushes the brake plate 123 through the sliding rod 124 to move upwards and the top of the n-shaped connecting plate 123 is attached to the top of the n-shaped connecting plate 122 in an attaching manner The contact is closed to prevent the convex block 117 from rotating along with the n-shaped connecting plate 122, the cover plate 107 moves to the top when the polygonal inserted link 135 moves to the bottom, the electromagnet 127 of the shaking prevention structure is powered off to perform power failure treatment when the crucible 103 moves, the restoring force of the spring 129 pushes the sliding iron block 125 to move, the sliding iron block 125 pushes the sliding rod 124 to move, the sliding rod 124 drives the braking plate 123 to be in contact with the n-shaped connecting plate 122 in a fitting manner, the n-shaped connecting plate 122 is fixed and limited on the convex block 117, the crucible 103 does not shake when moving, the stability of the crucible 103 is ensured, the electromagnet 127 is electrified when the crucible 103 needs to be turned over, the electromagnet 127 is electrified to generate magnetism to suck the sliding iron block 125 downwards, the sliding iron block 125 drives the braking plate 123 to be separated from the n-shaped connecting plate 122, the convex block 117 is convenient to rotate along the n-shaped connecting plate 122, and the fixed crucible 103 is convenient to rotate to a discharging angle;
the rotating shaft 111 is connected with a plugging structure for plugging the crucible 103, the plugging structure comprises a cover plate 107, a first toothed plate 109, a first gear ring 113, a first limit sliding groove 116 and a first limit straight groove 138, the middle end of the inner top of the cover plate 107 is fixedly mounted in an electromagnetic stirring structure diagram and is not shown, the top of the n-shaped plate 115 is provided with the first limit straight groove 138, the side wall of the first toothed plate 109 is provided with the first limit sliding groove 116, the side wall of the first toothed plate 109 and the inner wall of the first limit sliding groove 116 are in limit fit sliding connection with the first limit straight groove 138, the first toothed plate 109 is in meshing connection with the first gear ring 113, the first toothed plate 109 and the second toothed plate 110 are respectively arranged at two sides of the first gear ring 113, the first gear ring 113 is fixedly mounted at the middle end of the rotating shaft 111 in meshing connection, the bottom of the first toothed plate 113 is fixedly connected with the cover plate 107, the polygonal inserted rod 135 moves to the uppermost end when the cover plate 107 moves to the inner top of the crucible 103, when the polygonal inserted link 135 moves upwards, the rotating shaft 111 drives the first gear ring 113 of the plugging structure to rotate, the first gear ring 113 drives the first toothed plate 109 to move downwards, the first toothed plate 109 drives the cover plate 107 to move to the inner upper part of the crucible 103, and the cover plate 107 blocks the top of the crucible 103, so that hot air in the crucible 103 is prevented from overflowing outwards, and the crucible 103 is favorably subjected to rapid heating treatment;
the top of apron 107 is connected with the sealed feeding structure who is used for sealed material loading, sealed feeding structure includes inlet pipe 102, slot 120, oblique cover 139 and oblique baffle 140, the oblique cover 139 of top feed inlet department fixedly connected with of apron 107, the even fixedly connected with slot 120 in bottom inclined plane of oblique cover 139, the even laminating rotation of the interior top inclined plane of oblique cover 139 is connected with oblique baffle 140, oblique baffle 140 and slot 120 laminating contact when oblique baffle 140 rotates the lower extreme, the top fixedly connected with inlet pipe 102 of oblique cover 139, raw materials promote the oblique baffle 140 rotation of sealed feeding structure during the material loading, the raw materials passes through in slot 120 and the oblique baffle 140 gap adds crucible 103, oblique baffle 140 and slot 120 laminating contact block up oblique cover 139 after the heating is over, avoid steam to discharge from inlet pipe 102.
The positioning structure comprises a slot 120 and an insert block 121, the slot 120 is uniformly opened along the circumferential direction and positioned at the inner top of the furnace body 101, the insert block 121 is inserted in the slot 120, and the insert block 121 is uniformly and fixedly installed at the bottom of the crucible 103 along the circumferential direction, so that the position of the crucible 103 in the furnace body 101 is ensured, and the external hoisting structure is convenient to contact with the convex ring 105.
When the crucible lifting device is used, the air cylinder 133 of the height adjusting structure drives the straight plate 134 to move, the straight plate 134 drives the polygonal insertion rod 135 to move in the second polygonal insertion hole 136, the second polygonal insertion hole 136 is inserted in the first polygonal insertion hole 108 of the connecting block 104, the lifting structure drives the crucible 103 to move right above the furnace body 101 through the convex ring 105, the driving motor 106 drives the rotating shaft 111 to rotate, the rotating shaft 111 drives the second ring gear 112 to rotate, the second ring gear 112 drives the second toothed plate 110 to move downwards, the second toothed plate 110 drives the polygonal insertion rod 135 to move downwards, the polygonal insertion rod 135 moves downwards towards the crucible 103 through the first polygonal insertion hole 108, the crucible 103 drives the furnace body 101 to move inwards, the crucible 103 is conveniently and fixedly installed in the furnace body 101, then the air cylinder 133 drives the straight plate 134 to move, the straight plate 134 drives the polygonal insertion rod 135 to move into the second polygonal insertion hole 136, and the second polygonal insertion hole 136 is separated from the first polygonal insertion hole 108, then the driving motor 106 drives the rotating shaft 111 to rotate, the rotating shaft 111 drives the second gear ring 112 to rotate, the second gear ring 112 drives the second toothed plate 110 to move upwards, the second toothed plate 110 drives the polygonal inserted link 135 to move upwards, and an electrical component is separated from the crucible when the crucible 103 is installed in the furnace body 101 and heated, so that the electrical component is prevented from being damaged when the temperature is too high; when the polygonal inserted link 135 moves upwards, the rotating shaft 111 drives the first gear ring 113 of the plugging structure to rotate, the first gear ring 113 drives the first toothed plate 109 to move downwards, the first toothed plate 109 drives the cover plate 107 to move to the inner upper part of the crucible 103, the cover plate 107 plugs the top of the crucible 103, hot air in the crucible 103 is prevented from overflowing outwards, the crucible 103 is favorably subjected to rapid heating treatment, and the crucible is subjected to heating treatment by the first thread heater 118 and the second thread heater 119; during feeding, the raw materials push the inclined baffle 140 of the sealed feeding structure to rotate, the raw materials are added into the crucible 103 through a gap between the slot 120 and the inclined baffle 140, and after heating is finished, the inclined baffle 140 is attached to the slot 120 to contact with the inclined sleeve 139 so as to block the inclined sleeve, thereby preventing hot gas from being discharged from the feeding pipe 102; electromagnet 127 of anti-shaking structure cuts off the power supply and handles when crucible 103 removes, the restoring force of spring 129 promotes slip iron plate 125 and removes, slip iron plate 125 promotes slide bar 124 and removes, slide bar 124 drives braking plate 123 and n-shaped connecting plate 122 laminating contact, it is fixed spacing on convex block 117 with n-shaped connecting plate 122, crucible 103 can not appear rocking when removing, the stability of crucible 103 has been guaranteed, electrify electromagnet 127 when crucible 103 need turn over, electromagnet 127 circular telegram produces magnetism and inhales slip iron plate 125 downwards, slip iron plate 125 drives braking plate 123 and n-shaped connecting plate 122 separation, make things convenient for convex block 117 to rotate along n-shaped connecting plate 122, make things convenient for fixed crucible 103 to rotate to the angle of unloading.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A corrosion-resistant 7-series aluminum alloy capable of being quenched on line is characterized in that: the corrosion-resistant 7-series aluminum alloy capable of being quenched on line comprises the following raw materials in percentage by mass: less than or equal to 0.10 percent of Si, less than or equal to 0.2 percent of Fe, 0.15 to 0.3 percent of Cu, Mn: 0.3-0.4%, Mg: 1.7-2.3%, Cr: 0.05-0.15%, Zn: 6.6-7.2%, Ti is less than or equal to 0.1%, Zr: 0.1-0.25%, other elements are less than or equal to 0.05% singly, the sum is less than or equal to 0.15%, and the rest is Al.
2. The method for producing an on-line quenchable corrosion-resistant 7-series aluminum alloy according to claim 1, wherein: the method comprises the following specific steps:
1) smelting treatment: smelting aluminum alloy according to the mass fraction: sequentially adding an aluminum ingot, an aluminum-copper intermediate alloy, an aluminum-manganese intermediate alloy, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy, a zinc ingot and the like into a smelting furnace for smelting, after the ingredients are completely melted, scattering a slag cleaning agent for removing slag, performing electromagnetic stirring for more than 2 times, and adding a magnesium ingot into the melt and stirring when the melt temperature reaches 730-; controlling the temperature of the melt at 720-780 ℃;
2) furnace guiding and refining: introducing the melt obtained in the step 1) into a standing furnace through a furnace guide groove, introducing a No. 2 refining agent into the melt by using argon gas for refining, and then slagging off;
3) heating and standing: controlling the temperature of the melt obtained in the step 2) at 755-775 ℃, and standing for 30 min;
4) casting: casting the melt obtained in the step 3), and adding a proper amount of Al-Ti-B wires on line during casting, wherein the casting speed is controlled at 70-100mm/min, and the cooling water flow is controlled at 50-90L/min;
5) homogenizing cast ingots: homogenizing the ingot obtained in the step 4), keeping the temperature for 16h at the homogenizing temperature of 450 ℃ and 460 ℃, and then discharging and air cooling;
6) removing a segregation layer from the cast ingot: turning the ingot casting wagon obtained in the step 5) for 2-4mm, and removing the segregation layer on the periphery of the ingot casting;
7) profile extrusion: heating the ingot obtained in the step 6) to 480-;
8) aging of the section bar: and (3) carrying out aging treatment on the section obtained in the step 7), heating to 100 ℃, preserving heat for 5h, then heating to 138 ℃, preserving heat for 12h, and then discharging from the furnace and air cooling.
3. The apparatus for producing a corrosion-resistant 7-series aluminum alloy that can be quenched on-line according to claim 2, wherein: the device comprises a smelting furnace (1), a standing furnace (2), a casting blanking pipe (3), a casting machine (4), a conveying roller (5), a homogenizing box (6), a segregation layer removing box (7), an extrusion forming machine (8) and a sectional material aging treatment machine (9), wherein the smelting furnace (1) is used for alloy smelting, the standing furnace (2) is used for alloy melt standing, the bottom of the standing furnace (2) is connected with the casting blanking pipe (3), the casting blanking pipe (3) is connected with the casting machine (4) used for casting, the casting machine (4) is connected with the conveying roller (5) used for material transmission, the casting part cast by the casting machine (4) is conveyed into the homogenizing box (6) by the conveying roller (5) for homogenizing treatment, the casting ingot homogenized by the homogenizing box (6) is conveyed into the segregation layer removing box (7) by the conveying roller (5) for removing a peripheral segregation layer of the casting ingot, the conveying roller (5) conveys the ingot with the segregation layer removing box (7) removing the segregation layer on the periphery of the ingot into an extrusion molding machine (8) for profile extrusion, and the extruded cavity structural profile enters a profile aging treatment machine (9) for profile aging treatment;
the smelting furnace (1) comprises a furnace body (101), a second thread heater (119) is fixedly connected to the inner bottom of the furnace body (101), a first thread heater (118) is fixedly connected to the side wall of the furnace body (101), and the second thread heater (119) and the first thread heater (118) are both used for electromagnetic heating;
the inner top of the smelting furnace (1) is connected with a positioning structure, the positioning structure is connected with a crucible (103), the crucible (103) is connected with a height adjusting structure for adjusting the height of the crucible (103), the height adjusting structure comprises a connecting block (104), a convex ring (105), a driving motor (106), a first polygonal jack (108), a second toothed plate (110), a rotating shaft (111), a second gear ring (112), a second limiting sliding groove (114), an n-shaped plate (115), a convex block (117), an n-shaped connecting plate (122), a rotating shaft (126), a second limiting straight groove (132), an air cylinder (133), a straight plate (134), a polygonal inserted rod (135), a second polygonal jack (136) and an L-shaped block (137), the connecting block (104) is symmetrically and fixedly installed on two sides of the top of the crucible (103), and the connecting block (104) is provided with a first polygonal jack (108) in the horizontal direction, the side wall of the n-shaped plate (115) is fixedly connected with a driving motor (106), an output shaft of the driving motor (106) is fixedly connected with a rotating shaft (111), the rotating shaft (111) is symmetrically and fixedly connected with a second gear ring (112), the second gear ring (112) is meshed with a second toothed plate (110), a second limiting sliding groove (114) is formed in the side wall of the second toothed plate (110), a second limiting straight groove (132) is symmetrically formed in the top of the n-shaped plate (115), the side wall of the second toothed plate (110) and the side wall of the second limiting sliding groove (114) are in fit sliding connection with the second limiting straight groove (132), an L-shaped block (137) is fixedly connected to the bottom of the second toothed plate (110), a second polygonal insertion hole (136) is formed in the middle lower end of the L-shaped block (137), and the second polygonal insertion hole (136) is the same as the first polygonal insertion hole (108), the middle upper end of the L-shaped block (137) is fixedly connected with an air cylinder (133), the output end of the air cylinder (133) is arranged outwards, the output end of the air cylinder (133) is fixedly connected with a straight plate (134), the top of the straight plate (134) is fixedly connected with a polygonal inserted rod (135) which is matched with a first polygonal insertion hole (108) and a second polygonal insertion hole (136) for use, the top of the n-shaped plate (115) is fixedly connected with a convex block (117), two ends of the top of the convex block (117) are rotatably connected with a rotating shaft (126), the outer end of the rotating shaft (126) is fixedly connected with the bottom of the inner wall of the n-shaped connecting plate (122), and the top of the n-shaped connecting plate (122) is fixedly connected with a convex ring (105);
the n-shaped connecting plate (122) is connected with an anti-shaking structure for preventing the crucible (103) from shaking, the anti-shaking structure comprises a brake plate (123), a sliding rod (124), a sliding iron block (125), an electromagnet (127), a triangular connecting plate (128), a spring (129), a sleeve (130) and a straight groove (131), the top of the convex block (117) is provided with a straight groove (131), the bottom in the straight groove (131) is fixedly connected with a sleeve (130), a spring (129) and an electromagnet (127) are fixedly connected to the inner bottom of the sleeve (130), a sliding iron block (125) is fixedly connected to the top of the spring (129), the sliding iron block (125) is in contact with the inner wall of the sleeve (130) in a fitting manner, the top of the sliding iron block (125) is fixedly connected with a sliding rod (124), the top of the sliding rod (124) is fixedly connected with a brake plate (123), the top of the brake plate (123) is in fit contact with the bottom of the n-shaped connecting plate (122);
the rotating shaft (111) is connected with a blocking structure for blocking the crucible (103), the blocking structure comprises a cover plate (107), a first toothed plate (109), a first gear ring (113), a first limiting sliding groove (116) and a first limiting straight groove (138), the top of the n-shaped plate (115) is provided with the first limiting straight groove (138), the side wall of the first toothed plate (109) is provided with the first limiting sliding groove (116), the side wall of the first toothed plate (109) and the inner wall of the first limiting sliding groove (116) are in limiting fit sliding connection with the first limiting straight groove (138), the first toothed plate (109) is in meshing connection with the first gear ring (113), the first toothed plate (109) and the second toothed plate (110) are respectively arranged on two sides of the first gear ring (113), the first gear ring (113) is fixedly installed at the middle end of the rotating shaft (111) in meshing connection, the bottom of the first gear ring (113) is fixedly connected with the cover plate (107), when the cover plate (107) moves to the inner top of the crucible (103), the polygonal inserted rod (135) moves to the uppermost end;
the top of apron (107) is connected with the sealed feeding structure who is used for sealed material loading, sealed feeding structure includes inlet pipe (102), slot (120), oblique cover (139) and oblique baffle (140), the top feed inlet department fixedly connected with of apron (107) overlaps (139) to one side, the even fixedly connected with slot (120) on the bottom inclined plane of oblique cover (139), the even laminating of the interior top inclined plane of oblique cover (139) is rotated and is connected with oblique baffle (140), oblique baffle (140) and slot (120) laminating contact when rotating the lower extreme, the top fixedly connected with inlet pipe (102) of oblique cover (139).
4. The apparatus for manufacturing a corrosion-resistant 7-series aluminum alloy, which can be quenched on-line, according to claim 3, wherein: the top parts of the two ends of the standing furnace (2) are respectively and fixedly connected with an air inlet pipe (201) and an air outlet pipe (202) for argon circulation.
5. The apparatus for producing a corrosion-resistant 7-series aluminum alloy, which can be quenched on-line, according to claim 4, wherein: the positioning structure comprises a slot (120) and an insert block (121), the slot (120) is uniformly arranged on the inner top of the furnace body (101) along the circumferential direction, and the insert block (121) is inserted in the slot (120).
6. The apparatus for manufacturing a corrosion-resistant 7-series aluminum alloy, which can be quenched on-line, according to claim 5, wherein: the insert blocks (121) are uniformly and fixedly arranged at the bottom of the crucible (103) along the circumferential direction.
7. The apparatus for manufacturing a corrosion-resistant 7-series aluminum alloy, which can be quenched on-line, according to claim 6, wherein: the n-shaped plate (115) is rotatably connected with the rotating shaft (111) through a bearing fixedly connected with the n-shaped plate.
8. The apparatus for manufacturing a corrosion-resistant 7-series aluminum alloy, which can be quenched on-line, according to claim 3, wherein: when the polygonal inserted rod (135) moves to the lowest end, the cover plate (107) moves to the highest end.
9. The apparatus for manufacturing a corrosion-resistant 7-series aluminum alloy, which can be quenched on-line, according to claim 3, wherein: the spring (129) is sleeved on the outer side of the electromagnet (127).
10. The apparatus for manufacturing a corrosion-resistant 7-series aluminum alloy, which can be quenched on-line, according to claim 9, wherein: the crucible (103) moves to the electromagnet (127), the power-off processing spring (129) pushes the sliding iron block (125) to move upwards, and the sliding iron block (125) pushes the brake plate (123) to move upwards through the sliding rod (124) to be in contact with the inner top of the n-shaped connecting plate (122) in an attaching mode, so that the convex block (117) is prevented from rotating along with the n-shaped connecting plate (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110892007.9A CN113667868B (en) | 2021-08-04 | 2021-08-04 | Manufacturing method of corrosion-resistant 7-series aluminum alloy capable of being quenched on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110892007.9A CN113667868B (en) | 2021-08-04 | 2021-08-04 | Manufacturing method of corrosion-resistant 7-series aluminum alloy capable of being quenched on line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113667868A true CN113667868A (en) | 2021-11-19 |
| CN113667868B CN113667868B (en) | 2022-06-10 |
Family
ID=78541328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110892007.9A Active CN113667868B (en) | 2021-08-04 | 2021-08-04 | Manufacturing method of corrosion-resistant 7-series aluminum alloy capable of being quenched on line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113667868B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612950A (en) * | 2022-10-24 | 2023-01-17 | 安徽鑫发铝业有限公司 | Tent aluminum profile reinforcing process |
| CN115679168A (en) * | 2022-10-10 | 2023-02-03 | 台山市金桥铝型材厂有限公司 | High-strength high-stress corrosion resistance Al-Zn-Mg aluminum alloy and preparation method and application thereof |
| CN115747586A (en) * | 2022-10-28 | 2023-03-07 | 福建祥鑫新材料科技有限公司 | High-strength aluminum alloy for electronic products and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120234440A1 (en) * | 2011-03-16 | 2012-09-20 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Method for manufacturing an extruded material of heat treatment type al-zn-mg series aluminum alloy |
| CN102978488A (en) * | 2012-12-11 | 2013-03-20 | 丛林集团有限公司 | Production technology of aluminum alloy sectional bar for automobile bumper |
| CN108179333A (en) * | 2017-12-29 | 2018-06-19 | 福建祥鑫股份有限公司 | A kind of press quenching high-performance extrusion forming aluminum alloy materials and preparation method thereof |
| CN111020316A (en) * | 2019-12-20 | 2020-04-17 | 福建祥鑫股份有限公司 | High-performance 7XXX aluminum alloy capable of being quenched on line and preparation method thereof |
-
2021
- 2021-08-04 CN CN202110892007.9A patent/CN113667868B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120234440A1 (en) * | 2011-03-16 | 2012-09-20 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Method for manufacturing an extruded material of heat treatment type al-zn-mg series aluminum alloy |
| CN102978488A (en) * | 2012-12-11 | 2013-03-20 | 丛林集团有限公司 | Production technology of aluminum alloy sectional bar for automobile bumper |
| CN108179333A (en) * | 2017-12-29 | 2018-06-19 | 福建祥鑫股份有限公司 | A kind of press quenching high-performance extrusion forming aluminum alloy materials and preparation method thereof |
| CN111020316A (en) * | 2019-12-20 | 2020-04-17 | 福建祥鑫股份有限公司 | High-performance 7XXX aluminum alloy capable of being quenched on line and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115679168A (en) * | 2022-10-10 | 2023-02-03 | 台山市金桥铝型材厂有限公司 | High-strength high-stress corrosion resistance Al-Zn-Mg aluminum alloy and preparation method and application thereof |
| CN115679168B (en) * | 2022-10-10 | 2024-05-03 | 台山市金桥铝型材厂有限公司 | Al-Zn-Mg aluminum alloy with high strength and high stress corrosion resistance, preparation method and application |
| CN115612950A (en) * | 2022-10-24 | 2023-01-17 | 安徽鑫发铝业有限公司 | Tent aluminum profile reinforcing process |
| CN115612950B (en) * | 2022-10-24 | 2023-12-15 | 安徽鑫发铝业有限公司 | Awning aluminum profile reinforcement process |
| CN115747586A (en) * | 2022-10-28 | 2023-03-07 | 福建祥鑫新材料科技有限公司 | High-strength aluminum alloy for electronic products and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113667868B (en) | 2022-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113667868B (en) | Manufacturing method of corrosion-resistant 7-series aluminum alloy capable of being quenched on line | |
| CN108893661B (en) | Wide thin-wall 6-series aluminum alloy section for high-speed motor train unit and preparation method thereof | |
| CN102978488B (en) | Production technology of aluminum alloy sectional bar for automobile bumper | |
| CN104018041B (en) | A kind of high ferro car body aluminium section bar and preparation method thereof | |
| US20150316210A1 (en) | Aluminum alloy material for high-pressure hydrogen gas container and method for producing the same | |
| CN103975085A (en) | Forged aluminum alloy material and method for producing same | |
| CN1644736A (en) | 6063 aluminium alloy with high strength and elongation coefficient an dproduction thereof | |
| CN106282692B (en) | A kind of preparation method of the vehicle body of railway vehicle aluminium section bar of high bending property | |
| WO2010031255A1 (en) | An al alloy material suitable for manufacturing main supporting structural components with large section | |
| CN104959393A (en) | Production method of aluminium alloy hot extrusion bar used for high-quality aviation blade | |
| WO2006016631A9 (en) | Sn-CONTAINING COPPER ALLOY AND METHOD FOR PRODUCTION THEREOF | |
| CN1768154A (en) | High-strength aluminum-alloy extruded material with excellent corrosion resistance and method of producing the same | |
| CN103993191B (en) | A kind of preparation method of high-strength/tenacity aluminum alloy section bar | |
| CN113373331A (en) | 6-series aluminum alloy for automobile battery tray and preparation method and application thereof | |
| WO2013144343A1 (en) | Alloy and method of production thereof | |
| CN113737069A (en) | 7xxx series aluminum alloy for fasteners and processing method of rods and wires thereof | |
| CN107604219A (en) | A kind of formula and its production technology of high strength alumin ium alloy body part | |
| CN110952001A (en) | High-strength and high-toughness Al-Si-Cu-Mg cast aluminum alloy added with Mn and Zn and heat treatment method thereof | |
| CN105112737A (en) | High-heat-conductivity corrosion-resistant die-cast aluminum alloy and preparing technique thereof | |
| CN107739921A (en) | A kind of automobile high-strength aluminium section bar and its production technology | |
| CN110551928A (en) | Production method of 5654 aluminum alloy welding wire blank | |
| CN105624442B (en) | A kind of method that fast instant silicon process produces 6063 aluminium alloy bars | |
| CN112760532A (en) | Aluminum alloy section for loading, unloading and transferring platform and preparation method thereof | |
| CN103898377A (en) | High-abrasion-resistant aluminum alloy section and preparation method thereof | |
| CN100354444C (en) | Magnesium-ally mud-guard and production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220526 Address after: Main plant of Fujian Xiangxin Co., Ltd., No. 217, Tongyang, Dongtai village, Minhou County, Fuzhou City, Fujian Province, 350119 Applicant after: Fujian Xiangxin New Material Technology Co.,Ltd. Address before: Tongyang 217, Dongtai village, Qingkou Town, Minhou County, Fuzhou City, Fujian Province Applicant before: FUJIAN XIANGXIN SHARES Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |