CN117026031A - Flat cast ingot of 2219A aluminum alloy for aerospace and manufacturing method thereof - Google Patents
Flat cast ingot of 2219A aluminum alloy for aerospace and manufacturing method thereof Download PDFInfo
- Publication number
- CN117026031A CN117026031A CN202310810803.2A CN202310810803A CN117026031A CN 117026031 A CN117026031 A CN 117026031A CN 202310810803 A CN202310810803 A CN 202310810803A CN 117026031 A CN117026031 A CN 117026031A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- aluminum
- ingot
- alloy
- percent
- 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.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000000956 alloy Substances 0.000 claims abstract description 54
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 53
- 238000005266 casting Methods 0.000 claims abstract description 37
- 238000003723 Smelting Methods 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 8
- 238000005303 weighing Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000007670 refining Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- ZGUQGPFMMTZGBQ-UHFFFAOYSA-N [Al].[Al].[Zr] Chemical compound [Al].[Al].[Zr] ZGUQGPFMMTZGBQ-UHFFFAOYSA-N 0.000 claims description 8
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 8
- HIMLGVIQSDVUJQ-UHFFFAOYSA-N aluminum vanadium Chemical compound [Al].[V] HIMLGVIQSDVUJQ-UHFFFAOYSA-N 0.000 claims description 8
- -1 aluminum-manganese Chemical compound 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 238000009749 continuous casting Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 239000003345 natural gas Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000010079 rubber tapping Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910018167 Al—Be Inorganic materials 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/003—Aluminium alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/108—Feeding additives, powders, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/117—Refining the metal by treating with gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/119—Refining the metal by filtering
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to the field of aluminum alloy casting, in particular to a flat cast ingot of 2219A aluminum alloy for spaceflight and a manufacturing method thereof. The invention aims to solve the problems of low conductivity, poor chip property and poor weldability of flat ingots of 2219A aluminum alloy for aerospace manufactured by the existing method. The aluminum alloy consists of 5.8 to 6.8 percent of Cu, 0.2 to 0.4 percent of Mn, 0.05 to 0.15 percent of V, 0.02 to 0.1 percent of Ti, 0.1 to 0.25 percent of Zr and the balance of Al according to weight percentage. The method comprises the following steps: weighing smelting raw materials; smelting raw materials according to a process sequence and a process temperature; preparing a casting melt according to a process; and casting the alloy melt through a filtering device to obtain the cast aluminum alloy. The casting method is used for casting the flat cast ingot of the 2219A aluminum alloy for spaceflight.
Description
Technical Field
The invention relates to the field of aluminum alloy casting, in particular to a flat cast ingot of 2219A aluminum alloy for spaceflight and a manufacturing method thereof.
Background
The 2xxx aluminum alloy represented by Al-Cu is a typical heat-treatable strengthening alloy, and is widely used in the aerospace field, such as a rocket case material, due to its advantages of superior fracture toughness, welding performance, good high-temperature creep property, and strong stress corrosion resistance. 2219 aluminum alloy is the most typical alloy in 2xxx series alloys, and has an operating temperature of-270-300 ℃ and is often applied in the aerospace field, such as large carrier rocket liquid fuel tanks, supersonic aircraft skins and the like.
2219 aluminum alloy has good welding performance, fracture toughness and corrosion resistance, is widely applied in the aerospace field, and generally depends on means such as subsequent plastic forming and heat treatment to carry out alloy strengthening. However, with the development of technology, the requirements on the material performance in industrial production are higher and higher, and the progress of high-performance and easily-processed materials is gradually advanced, so that on the basis of the existing materials with excellent performance, the related technological parameters and component compositions are optimized, and the materials with better performance are continuously researched and innovated. The flat cast ingot of the 2219A aluminum alloy for spaceflight manufactured by the existing method has the problems of low conductivity, and poor chip property and weldability.
The aim of the research is to effectively ensure the conductivity, welding performance and cutting performance of the cast ingot by controlling the related components and hydrogen content in the alloy smelting and casting process. The aluminum alloy material with more excellent performance is provided for the national aerospace industry, and the national aerospace industry is assisted to develop towards more far future.
Disclosure of Invention
The invention aims to solve the problems of low conductivity, poor chip property and poor weldability of a flat ingot of 2219A aluminum alloy for aerospace manufactured by the existing method, and provides a flat ingot of 2219A aluminum alloy for aerospace and a manufacturing method thereof.
The flat cast ingot of the 2219A aluminum alloy for spaceflight consists of 5.8-6.8 percent of Cu, 0.2-0.4 percent of Mn, 0.05-0.15 percent of V, 0.02-0.1 percent of Ti, 0.1-0.25 percent of Zr and the balance of Al according to the weight percentage; the impurities Si, fe, mg and Zn in the flat cast ingot of the 2219A aluminum alloy for spaceflight are less than 0.12%, 0.2%, 0.02% and 0.1% respectively; bi is less than or equal to 0.001%, sn is less than or equal to 0.001%, pb is less than or equal to 0.001% and other impurities are less than or equal to 0.05% in the flat cast ingot of the 2219A aluminum alloy for spaceflight.
The manufacturing method of the flat cast ingot of the 2219A aluminum alloy for spaceflight comprises the following steps:
1. the formula of the aluminum alloy according to the preparation method comprises the following steps: according to weight percentage, 5.8 to 6.8 percent of Cu, 0.2 to 0.4 percent of Mn, 0.05 to 0.15 percent of V, 0.02 to 0.1 percent of Ti, 0.1 to 0.25 percent of Zr and the balance of Al; preparing materials according to the formula of the aluminum alloy, and respectively weighing a high-purity aluminum ingot, a high-purity copper plate, an aluminum-manganese intermediate alloy, an aluminum-vanadium intermediate alloy, an aluminum-titanium intermediate alloy and an aluminum-zirconium intermediate alloy as smelting raw materials;
2. preparing an aluminum alloy melt: adding the smelting raw materials weighed in the first step into a natural gas melting furnace for melting, wherein the adding sequence of the smelting raw materials is as follows: firstly, adding a high-purity aluminum ingot, an aluminum-manganese intermediate alloy, an aluminum-vanadium intermediate alloy, an aluminum-titanium intermediate alloy and an aluminum-zirconium intermediate alloy, and adding a high-purity copper plate when furnace charges are melted to form liquid and can cover a Gao Chuntong plate; stirring for 10-20 min under the condition that the temperature of the melt is increased to 720-760 ℃, sampling and analyzing chemical components to ensure that the chemical components of aluminum liquid meet the requirements, and introducing the obtained melt into a holding furnace under the condition that the temperature is 720-760 ℃ after the chemical components are analyzed to be qualified;
3. casting: under the condition of 720-740 ℃, simultaneously starting HD200 and manually introducing high-purity argon for refining, standing for 25-35 min after refining for 25-35 min, and obtaining pure melt to be cast; maintaining the alloy melt liquid level in the holding furnace and the alloy melt liquid level in the flow tray at the same level under the condition of 690-720 ℃, casting the Al-Ti-0.2B wire at each ingot casting point at the casting speed of 45-55 mm/min, casting at the temperature of 690-720 ℃ and the casting cooling water flow of 110m 3 /min～150m 3 And/min, preparing the flat cast ingot of the 2219A aluminum alloy for spaceflight by adopting a water-cooling semi-continuous casting technology under the condition that the liquid level of the crystallizer is 75-95 mm.
The beneficial effects of the invention are as follows:
1. according to the invention, high-purity aluminum is adopted for feeding, waste materials and flux are not used in the smelting process, impurity elements such as Fe, si, mg and the like are strictly controlled, and the Bi, sn and Pb contents are strictly controlled below 0.001wt.%, so that the conductivity, cutting performance and fatigue performance of the alloy are improved;
2. in order to ensure the purity of the aluminum liquid, the Al-Be intermediate alloy is added during smelting;
3. the invention adopts the heat preservation furnace HD200 and manually introducing high-purity argon for refining; the runner and the online purifying equipment are not repaired and sprayed before casting of each furnace, so that the solid hydrogen content is less than or equal to 0.2mL/100gAl;
4. in the casting process, the wiper is adopted to prevent redundant cooling water from flowing along with the surface of the cast ingot, so that the cast ingot can be fully tempered, the formation tendency of cold cracks is reduced, and the cast ingot forming rate is improved.
Detailed Description
The first embodiment is as follows: the flat cast ingot of the 2219A aluminum alloy for spaceflight in the embodiment consists of 5.8-6.8 percent of Cu, 0.2-0.4 percent of Mn, 0.05-0.15 percent of V, 0.02-0.1 percent of Ti, 0.1-0.25 percent of Zr and the balance of Al in percentage by weight; the impurities Si, fe, mg and Zn in the flat cast ingot of the 2219A aluminum alloy for spaceflight are less than 0.12%, 0.2%, 0.02% and 0.1% respectively; bi is less than or equal to 0.001%, sn is less than or equal to 0.001%, pb is less than or equal to 0.001% and other impurities are less than or equal to 0.05% in the flat cast ingot of the 2219A aluminum alloy for spaceflight.
The second embodiment is as follows: the first difference between this embodiment and the specific embodiment is that: the flat cast ingot of the 2219A aluminum alloy for spaceflight consists of 6.2 percent of Cu, 0.3 percent of Mn, 0.1 percent of V, 0.05 percent of Ti, 0.15 percent of Zr and the balance of Al in percentage by weight; the impurities Si, fe, mg and Zn in the flat cast ingot of the 2219A aluminum alloy for spaceflight are less than 0.12%, 0.2%, 0.02% and 0.1% respectively; bi is less than or equal to 0.001%, sn is less than or equal to 0.001%, pb is less than or equal to 0.001% and other impurities are less than or equal to 0.05% in the flat cast ingot of the 2219A aluminum alloy for spaceflight. Other steps and parameters are the same as in the first embodiment.
And a third specific embodiment: the method for manufacturing the flat ingot of the 2219A aluminum alloy for spaceflight in the embodiment is carried out according to the following steps:
1. the formula of the aluminum alloy according to the preparation method comprises the following steps: according to weight percentage, 5.8 to 6.8 percent of Cu, 0.2 to 0.4 percent of Mn, 0.05 to 0.15 percent of V, 0.02 to 0.1 percent of Ti, 0.1 to 0.25 percent of Zr and the balance of Al; preparing materials according to the formula of the aluminum alloy, and respectively weighing a high-purity aluminum ingot, a high-purity copper plate, an aluminum-manganese intermediate alloy, an aluminum-vanadium intermediate alloy, an aluminum-titanium intermediate alloy and an aluminum-zirconium intermediate alloy as smelting raw materials;
2. preparing an aluminum alloy melt: adding the smelting raw materials weighed in the first step into a natural gas melting furnace for melting, wherein the adding sequence of the smelting raw materials is as follows: firstly, adding a high-purity aluminum ingot, an aluminum-manganese intermediate alloy, an aluminum-vanadium intermediate alloy, an aluminum-titanium intermediate alloy and an aluminum-zirconium intermediate alloy, and adding a high-purity copper plate when furnace charges are melted to form liquid and can cover a Gao Chuntong plate; stirring for 10-20 min under the condition that the temperature of the melt is increased to 720-760 ℃, sampling and analyzing chemical components to ensure that the chemical components of aluminum liquid meet the requirements, and introducing the obtained melt into a holding furnace under the condition that the temperature is 720-760 ℃ after the chemical components are analyzed to be qualified;
3. casting: under the condition of 720-740 ℃, HD200 is started and high purity is manually introducedRefining by argon, standing for 25-35 min after refining for 25-35 min to obtain pure melt to be cast; maintaining the alloy melt liquid level in the holding furnace and the alloy melt liquid level in the flow tray at the same level under the condition of 690-720 ℃, casting the Al-Ti-0.2B wire at each ingot casting point at the casting speed of 45-55 mm/min, casting at the temperature of 690-720 ℃ and the casting cooling water flow of 110m 3 /min～150m 3 And/min, preparing the flat cast ingot of the 2219A aluminum alloy for spaceflight by adopting a water-cooling semi-continuous casting technology under the condition that the liquid level of the crystallizer is 75-95 mm.
The specific embodiment IV is as follows: the third difference between this embodiment and the third embodiment is that: and step two, adding the high-purity copper plate and the aluminum ingot which are added into the hopper and the intermediate alloy together with the first vehicle. Other steps and parameters are the same as in the third embodiment.
Fifth embodiment: the third difference between this embodiment and the third embodiment is that: 2219 grade one waste is used in the first step, which is 20% of the total weight of the burden. Other steps and parameters are the same as in the third embodiment.
Specific embodiment six: the third difference between this embodiment and the third embodiment is that: and in the second step, stirring by using a vehicle under the condition that the temperature of the melt is increased to 720-760 ℃ and stirring for 10-20 min under the condition that the stirring speed is 0.5-1.5 m/s. Other steps and parameters are the same as in the third embodiment.
Seventh embodiment: the third difference between this embodiment and the third embodiment is that: step two, adding the total mass of the smelting raw materials into the furnace burden to be 2 multiplied by 10 -5 Al-3Be intermediate alloy. Other steps and parameters are the same as in the third embodiment.
And secondly, coating the surface of the solution by using a No. 2 flux after stirring and slag skimming.
Eighth embodiment: the third difference between this embodiment and the third embodiment is that: ar-Cl is used for manual refining in the heat preservation furnace in the third step 2 A mixed gas of a rate of 0.15m 3 /min～0.25m 3 And/min. Other steps and parameters are the same as in the third embodiment.
Detailed description nine: the third difference between this embodiment and the third embodiment is that: and step three, on-line dual degassing of ALPUR and SNIF is adopted, and the gas pressure of degassing equipment is 4-5 Mpa. Other steps and parameters are the same as in the third embodiment.
Detailed description ten: the third difference between this embodiment and the third embodiment is that: and thirdly, carrying out wire drawing on Al-Ti-0.2B at each ingot casting point, wherein the point-in speed is 63cm/min. Other steps and parameters are the same as in the third embodiment.
Eleventh embodiment: the third difference between this embodiment and the third embodiment is that: the filter used in the online filter box in step three is a double inlet 30ppi+50ppi ceramic plate. Other steps and parameters are the same as in the third embodiment.
Twelve specific embodiments: the third difference between this embodiment and the third embodiment is that: step three, the casting speed is 50mm/min, the casting temperature is 700 ℃ and the casting cooling water flow is 100m 3 Semi-continuous casting is carried out under the condition of/min. Other steps and parameters are the same as in the third embodiment.
Thirteen specific embodiments: the third difference between this embodiment and the third embodiment is that: and thirdly, installing a wiper plate in the casting process to prevent cooling water from flowing downwards along with the surface of the cast ingot. Other steps and parameters are the same as in the third embodiment.
The following examples are used to verify the benefits of the present invention:
embodiment one: the manufacturing method of the 2219A aluminum alloy flat cast ingot for spaceflight in the embodiment is realized by the following steps:
1. the charging materials are added according to the mass percentage: cu:6.2%, mn:0.3%, V:0.1%, ti:0.05%, zr:0.15 percent and the balance of Al, and weighing high-purity aluminum ingots, high-purity copper plates, aluminum-manganese intermediate alloys, aluminum-vanadium intermediate alloys, aluminum-titanium intermediate alloys and aluminum-zirconium intermediate alloys. It is especially pointed out that the mass percent of the impurity Si, fe, mg, zn is strictly controlled to Be less than 0.12%, 0.2%, 0.02%, 0.1% and Al-Be respectively 3 The master alloy is 2 multiplied by 10 of the total mass of the smelting raw materials -5 ；
2. And (3) sequentially adding the smelting raw materials weighed in the step one into a high-purity aluminum ingot, a high-purity copper plate, an aluminum-manganese intermediate alloy, an aluminum-vanadium intermediate alloy, an aluminum-titanium intermediate alloy and an aluminum-zirconium intermediate alloy. Stirring at a speed of 0.5-1.5 m/s for 10-15 min by using a slag removing vehicle under the condition that the temperature of the melt rises to 720-760 ℃, and covering without using flux. Sampling and analyzing chemical components to ensure that the chemical components of aluminum liquid meet the requirements, and introducing the obtained melt into a heat preservation furnace after the chemical components are analyzed to be qualified;
3. introducing the alloy melt obtained in the second step into a heat preservation furnace at the temperature of 720-760 ℃, simultaneously starting HD200 and manually introducing high-purity argon for refining at the temperature of 720-740, and standing for 25-35 min after refining for 25-35 min to obtain pure melt to be cast; maintaining the alloy melt liquid level in the holding furnace and the alloy melt liquid level in the flow tray at the same level at 690-720 ℃, setting the casting speed of each cast ingot point Al-Ti-0.2B wire at 63cm/min, and then casting at 50mm/min at 700+/-10 ℃ with the casting cooling water flow rate of 100m 3 And/min, preparing the flat cast ingot of the 2219A aluminum alloy for spaceflight by adopting a water-cooling semi-continuous casting technology under the condition that the liquid level of the crystallizer is 90+/-5 mm.
The first embodiment obtains 420×1320 aviation aluminum alloy flat cast ingot without longitudinal cracks, pulling cracks and slag inclusion on the surface, the main component is qualified, the mass percentage of impurities Si, fe, mg, zn is respectively less than 0.12%, 0.2%, 0.02%, 0.1%, the content of Bi, sn and Pb is less than or equal to 0.001%, and the content of hydrogen is 0.15ml/100g.
Claims (10)
1. A flat cast ingot of an aluminum alloy 2219A for spaceflight is characterized in that the flat cast ingot of the aluminum alloy 2219A for spaceflight consists of 5.8-6.8 percent of Cu, 0.2-0.4 percent of Mn, 0.05-0.15 percent of V, 0.02-0.1 percent of Ti, 0.1-0.25 percent of Zr and the balance of Al according to weight percentage; the impurities Si, fe, mg and Zn in the flat cast ingot of the 2219A aluminum alloy for spaceflight are less than 0.12%, 0.2%, 0.02% and 0.1% respectively; bi is less than or equal to 0.001%, sn is less than or equal to 0.001%, pb is less than or equal to 0.001% and other impurities are less than or equal to 0.05% in the flat cast ingot of the 2219A aluminum alloy for spaceflight.
2. A flat ingot of 2219A aluminum alloy for aerospace according to claim 1, characterized in that the flat ingot of 2219A aluminum alloy for aerospace consists of 6.2% cu, 0.3% mn, 0.1% v, 0.05% ti, 0.15% zr and the balance Al in weight percent; the impurities Si, fe, mg and Zn in the flat cast ingot of the 2219A aluminum alloy for spaceflight are less than 0.12%, 0.2%, 0.02% and 0.1% respectively; bi is less than or equal to 0.001%, sn is less than or equal to 0.001%, pb is less than or equal to 0.001% and other impurities are less than or equal to 0.05% in the flat cast ingot of the 2219A aluminum alloy for spaceflight.
3. The method for manufacturing a flat ingot of 2219A aluminum alloy for aerospace according to claim 1, wherein the method for manufacturing a flat ingot of 2219A aluminum alloy for aerospace is carried out by the steps of:
1. the formula of the aluminum alloy according to the preparation method comprises the following steps: according to weight percentage, 5.8 to 6.8 percent of Cu, 0.2 to 0.4 percent of Mn, 0.05 to 0.15 percent of V, 0.02 to 0.1 percent of Ti, 0.1 to 0.25 percent of Zr and the balance of Al; preparing materials according to the formula of the aluminum alloy, and respectively weighing a high-purity aluminum ingot, a high-purity copper plate, an aluminum-manganese intermediate alloy, an aluminum-vanadium intermediate alloy, an aluminum-titanium intermediate alloy and an aluminum-zirconium intermediate alloy as smelting raw materials;
2. preparing an aluminum alloy melt: adding the smelting raw materials weighed in the first step into a natural gas melting furnace for melting, wherein the adding sequence of the smelting raw materials is as follows: firstly, adding a high-purity aluminum ingot, an aluminum-manganese intermediate alloy, an aluminum-vanadium intermediate alloy, an aluminum-titanium intermediate alloy and an aluminum-zirconium intermediate alloy, and adding a high-purity copper plate when furnace charges are melted to form liquid and can cover a Gao Chuntong plate; stirring for 10-20 min under the condition that the temperature of the melt is increased to 720-760 ℃, sampling and analyzing chemical components to ensure that the chemical components of aluminum liquid meet the requirements, and introducing the obtained melt into a holding furnace under the condition that the temperature is 720-760 ℃ after the chemical components are analyzed to be qualified;
3. casting: under the condition of 720-740 ℃, simultaneously starting HD200 and manually introducing high-purity argon for refining, standing for 25-35 min after refining for 25-35 min, and obtaining pure melt to be cast; maintaining the temperature of 690-720 deg.c inside the holding furnaceThe alloy melt liquid level of (2) and the alloy melt liquid level in the flow disc are in the same level, each ingot casting point is Al-Ti-0.2B wire, then the casting speed is 45-55 mm/min, the casting temperature is 690-720 ℃, and the casting cooling water flow is 110m 3 /min～150m 3 And/min, preparing the flat cast ingot of the 2219A aluminum alloy for spaceflight by adopting a water-cooling semi-continuous casting technology under the condition that the liquid level of the crystallizer is 75-95 mm.
4. The method for producing a flat ingot of an aluminum alloy 2219A for aerospace according to claim 3, wherein in the second step, stirring is performed by using a vehicle under the condition that the temperature of the melt is raised to 720 to 760 ℃ and the stirring speed is 0.5 to 1.5m/s for 10 to 20 minutes.
5. A method for producing a flat ingot of an aluminum alloy 2219A for aerospace according to claim 3, characterized by comprising the step of adding 2X 10 of the total mass of the raw materials for melting to the charge material -5 Al-3Be intermediate alloy.
6. The method for producing a flat ingot of 2219A aluminum alloy for aerospace according to claim 3, wherein Ar-Cl is used for manual refining in the third holding furnace 2 A mixed gas of a rate of 0.15m 3 /min～0.25m 3 /min。
7. The method for producing a flat ingot of 2219A aluminum alloy for aerospace according to claim 3, wherein the step three uses ALPUR+SNIF double degassing on line, and the degassing equipment gas pressure is 4Mpa to 5Mpa.
8. The method for producing a flat ingot of 2219A aluminum alloy for aerospace according to claim 3, wherein the tapping speed is 63cm/min for each ingot of the three steps of the wire Al-Ti-0.2B.
9. A method of manufacturing a flat ingot of 2219A aluminum alloy for aerospace according to claim 3, wherein the filter used in the online filter box in the third step is a double-inlet 30ppi+50ppi ceramic plate.
10. The method for producing a flat ingot of 2219A aluminum alloy for aerospace according to claim 3, wherein in the third step, the casting speed is 50mm/min, the casting temperature is 700 ℃ and the flow rate of the casting cooling water is 100m 3 Semi-continuous casting is carried out under the condition of/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310810803.2A CN117026031A (en) | 2023-07-04 | 2023-07-04 | Flat cast ingot of 2219A aluminum alloy for aerospace and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310810803.2A CN117026031A (en) | 2023-07-04 | 2023-07-04 | Flat cast ingot of 2219A aluminum alloy for aerospace and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117026031A true CN117026031A (en) | 2023-11-10 |
Family
ID=88601200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310810803.2A Pending CN117026031A (en) | 2023-07-04 | 2023-07-04 | Flat cast ingot of 2219A aluminum alloy for aerospace and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117026031A (en) |
-
2023
- 2023-07-04 CN CN202310810803.2A patent/CN117026031A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112143945B (en) | High-strength and high-toughness cast aluminum-silicon alloy containing multiple composite rare earth elements and preparation method thereof | |
| CN104109784A (en) | Ultrahigh-strength Al-Zn-Mg-Cu system aluminum alloy large-size flat cast ingot and making method thereof | |
| CN112410592B (en) | Preparation method of aluminum alloy welding material cast ingot | |
| CN109468508B (en) | Aluminum alloy material for power battery tray of electric automobile and preparation method of aluminum alloy material | |
| CN108300884B (en) | A kind of hypoeutectic Al-Mg2The rotten and thinning method of Si alloy | |
| CN114351017B (en) | Casting method and application of high-toughness high-heat-conductivity aluminum alloy ingot | |
| CN104928486B (en) | A kind of method of divided silicon and alusil alloy | |
| CN1204281C (en) | High purity high strength aluminium alloy | |
| CN113930648A (en) | Preparation method of high-zinc-aluminum alloy flat ingot | |
| CN108866407A (en) | A kind of big specification rectangle ingot of aerospace aluminium alloy and its manufacturing method | |
| CN110983119B (en) | High-strength high-thermal-conductivity die-casting aluminum alloy material and preparation method thereof | |
| CN113444911A (en) | High-strength high-toughness Al-Mg- (Al-Ti-Nb-B) alloy and preparation method thereof | |
| CN115679170B (en) | Preparation method of high-quality large-specification 7085 aluminum alloy cast ingot | |
| CN117026031A (en) | Flat cast ingot of 2219A aluminum alloy for aerospace and manufacturing method thereof | |
| CN111575533A (en) | Zinc-aluminum alloy round ingot, preparation method and application thereof, and zinc-aluminum alloy material | |
| CN114717453B (en) | High-toughness cast aluminum-silicon alloy and preparation method thereof | |
| CN112795811A (en) | Polycrystalline multiphase reinforced heat-resistant titanium alloy and preparation method thereof | |
| CN111041298A (en) | High-strength superhard 6061 aluminum alloy rod | |
| CN112322920B (en) | Aluminum alloy casting production method | |
| CN113584361B (en) | High-strength corrosion-resistant 7-series aluminum alloy and casting method thereof | |
| CN114985686A (en) | Preparation method of high-strength heat-resistant high-copper-deformation aluminum alloy large-size round ingot | |
| CN114000000A (en) | Casting method of aluminum-magnesium-scandium alloy | |
| CN112695235A (en) | Single-stage homogenization heat treatment method for high-alloying Al-Zn-Mg-Cu-Ce alloy | |
| CN105838937A (en) | Aluminum-silicon-magnesium-strontium-scandium-titanium casting alloy with high mechanical property and preparation method thereof | |
| CN112609096A (en) | Preparation method of heat-resistant high-strength Al-Li-Cu-Ce alloy plate |
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 |