CN115961164A - Preparation method of 4032 aluminum alloy - Google Patents
Preparation method of 4032 aluminum alloy Download PDFInfo
- Publication number
- CN115961164A CN115961164A CN202211046639.4A CN202211046639A CN115961164A CN 115961164 A CN115961164 A CN 115961164A CN 202211046639 A CN202211046639 A CN 202211046639A CN 115961164 A CN115961164 A CN 115961164A
- Authority
- CN
- China
- Prior art keywords
- aluminum
- alloy
- temperature
- refining
- 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.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 65
- 239000000956 alloy Substances 0.000 claims abstract description 65
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 64
- 238000007670 refining Methods 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 39
- 238000005266 casting Methods 0.000 claims abstract description 27
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 24
- -1 aluminum rare earth Chemical class 0.000 claims abstract description 21
- 239000000155 melt Substances 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 239000003607 modifier Substances 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 27
- 229910052749 magnesium Inorganic materials 0.000 claims description 27
- 239000011777 magnesium Substances 0.000 claims description 27
- 229910052710 silicon Inorganic materials 0.000 claims description 27
- 239000010703 silicon Substances 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 24
- 239000010949 copper Substances 0.000 claims description 24
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 238000007872 degassing Methods 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 238000009849 vacuum degassing Methods 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims 1
- 238000012986 modification Methods 0.000 abstract description 24
- 230000004048 modification Effects 0.000 abstract description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 13
- 239000001257 hydrogen Substances 0.000 abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 4
- 150000002910 rare earth metals Chemical class 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 53
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 26
- 239000003795 chemical substances by application Substances 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 8
- 238000005070 sampling Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 229910052712 strontium Inorganic materials 0.000 description 6
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 238000007865 diluting Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000005496 eutectics Effects 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- YNDGDLJDSBUSEI-UHFFFAOYSA-N aluminum strontium Chemical compound [Al].[Sr] YNDGDLJDSBUSEI-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a preparation method of 4032 aluminum alloy, which comprises the following steps: the preparation method comprises the following steps of (1) blending and melting alloy raw materials, then carrying out primary refining, primary slag skimming, turning down, adding a modifier, carrying out secondary refining, secondary slag skimming, standing, purifying, and casting to obtain 4032 aluminum alloy; the alterant is aluminum rare earth intermediate alloy. The invention solves the problems that the 4032 modification process is not easy to master and the modification effect is poor, and the alloy with good comprehensive performance can be obtained after rare earth modification. The aluminum rare earth alloy is used for modification, so that the aluminum rare earth alloy has a good modification effect, the hydrogen absorption tendency of the melt is reduced, and the 4032 alloy which is free of pores and good in structure is easily obtained.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy, and particularly relates to a preparation method of 4032 aluminum alloy.
Background
4032 the aluminum alloy is a eutectic aluminum-silicon alloy with high silicon content, has the advantages of high-temperature strength, good heat and wear resistance, small thermal expansion coefficient and the like, and is widely applied to pistons of high-speed internal combustion engines of automobiles, motorcycles and the like. 4032 modification treatment is usually required in the casting process, and if modification treatment is not performed or modification treatment technology is not appropriate, massive primary crystal silicon and long-needle-shaped eutectic silicon can appear in the high-power structure of 4032, so that a matrix is cut, and the mechanical property of the alloy is seriously influenced. At present, the main modification method is strontium modification, a certain amount of aluminum-strontium intermediate alloy is added into a melt, strontium element is introduced into the melt, and after modification treatment, massive primary crystal silicon in 4032 tissues disappears, and eutectic silicon is changed into small points from a long needle shape.
The strontium modified 4032 alloy is difficult to master in the inoculation period of strontium modification, and hydrogen absorption of a melt is increased after strontium is added, so that defects such as air holes and the like are easily caused in a cast rod, and the use of the product is influenced.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method for preparing a 4032 aluminum alloy, and the 4032 aluminum alloy prepared by the method provided by the present invention has a good structural property.
The invention provides a preparation method of 4032 aluminum alloy, which comprises the following steps:
the preparation method comprises the following steps of (1) blending and melting alloy raw materials, and then carrying out primary refining, primary slag skimming, converter reversing, modifier adding, secondary refining, secondary slag skimming, standing treatment, purification treatment and casting to obtain 4032 aluminum alloy;
the alterant is aluminum rare earth intermediate alloy.
Preferably, the ingredients of the ingredients are:
the balance being Al.
Preferably, the melting temperature is 740 to 780 ℃.
Preferably, the temperature of the primary refining is 740 to 760 ℃;
the time of the primary refining is 18 to 22 minutes.
Preferably, the temperature in the furnace reversing process is controlled to be 750-770 ℃, and the aluminum-titanium intermediate alloy is added into the melt during the furnace reversing.
Preferably, the temperature of the added alterant is 740-750 ℃;
the addition mass of the alterant is 2-4% of the mass of the alloy liquid.
Preferably, the temperature of the secondary refining is 740 to 750 ℃; the time of the secondary refining is 18-22 min.
Preferably, the temperature of the standing treatment is 735-755 ℃; the standing treatment time is 20-40 min.
Preferably, a vacuum degassing device is adopted in the purification treatment process to carry out online degassing; a filter plate is adopted, and the filter plate is a double-stage plate type filter.
Preferably, the temperature of the pan head in the casting process is controlled to be 680-700 ℃; the casting speed is 50-60 mm/min; the water quantity of a single ingot is controlled to be 12-18 m 3 /h。
The invention solves the problems of difficult mastering of 4032 modification process and poor modification effect, and can obtain alloy with good comprehensive performance after rare earth modification. The aluminum rare earth alloy is used for modification, so that the aluminum rare earth alloy has a good modification effect, the hydrogen absorption tendency of the melt is reduced, and the 4032 alloy which is free of pores and good in structure is easily obtained.
Drawings
FIG. 1 is a metallographic picture of an aluminum alloy prepared according to example 1 of the present invention;
FIG. 2 is a metallographic picture of an aluminum alloy prepared in example 2 of the present invention;
FIG. 3 is a gold phase diagram of an aluminum alloy prepared in example 3 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a preparation method of 4032 aluminum alloy, which comprises the following steps:
the preparation method comprises the following steps of (1) blending and melting alloy raw materials, then carrying out primary refining, primary slag skimming, turning down, adding a modifier, carrying out secondary refining, secondary slag skimming, standing, purifying, and casting to obtain 4032 aluminum alloy;
the alterant is aluminum rare earth intermediate alloy.
In the present invention, the ingredients of the ingredient are preferably:
the balance being Al.
In the present invention, the silicon content is preferably 11.9 to 12.3% by mass, and more preferably 12.2% by mass. In the present invention, the copper content is preferably 0.88 to 0.92% by mass, and more preferably 0.90% by mass. In the present invention, the magnesium is preferably contained in an amount of 0.98 to 1.02% by mass, more preferably 1.0% by mass. In the present invention, the nickel content is preferably 0.68 to 0.72% by mass, and more preferably 0.7% by mass. In the present invention, the titanium content is preferably 0.02% by mass. In the present invention, the iron content is preferably 0.20 to 0.30% by mass, and more preferably 0.25% by mass.
In the present invention, the alloy raw materials preferably include:
a silicon source, a copper source, a magnesium source, a nickel source, a titanium source and an aluminum source.
In the invention, the silicon source is preferably instant silicon, and more preferably 95# instant silicon; the copper source is preferably a copper plate, more preferably a pure copper plate, most preferably an electrolytically pure copper plate; the magnesium source is preferably a magnesium ingot, and more preferably a pure magnesium ingot; the nickel source is preferably an aluminum-nickel intermediate alloy, and the mass content of nickel in the aluminum-nickel intermediate alloy is preferably 8-12%, and more preferably 10%; the titanium source is preferably an aluminum-titanium intermediate alloy, and the mass content of titanium in the aluminum-titanium intermediate alloy is preferably 8-12%, and more preferably 10%; the aluminum source is preferably an aluminum ingot.
In the present invention, the method of melting preferably includes:
pouring the 95# instant silicon into the furnace bottom at one time, adding the needed aluminum ingot and the needed aluminum-nickel intermediate alloy, and heating to melt; adding the copper plate into the melt when the furnace burden softens the lower couch and can completely submerge the copper plate; stirring when the melting is complete; and pressing the magnesium ingot into the melt by using the feeding frame, and stirring again after the magnesium ingot is completely melted to thoroughly stir the aluminum melt.
In the present invention, the temperature for the temperature-increasing melting is preferably 740 to 780 ℃, more preferably 750 to 770 ℃, and most preferably 760 ℃. In the present invention, the stirring is preferably electromagnetic stirring, and the time of the electromagnetic stirring is preferably 15 to 25min, and more preferably 20min. In the invention, the secondary stirring is preferably electromagnetic stirring assisted with manual stirring; the electromagnetic stirring time is preferably 15-25 min, and more preferably 20min; the time for the manual stirring is preferably 8 to 12min, and more preferably 10min.
In the present invention, the temperature of the primary refining is preferably 740 to 760 ℃, more preferably 742 to 758 ℃, more preferably 745 to 755 ℃, and most preferably 750 ℃; the time of the primary refining is preferably 18 to 22 minutes, and more preferably 20 minutes; the dosage of the refining agent in the primary refining process is preferably 0.8-1.2 kg/ton aluminum (alloy liquid), more preferably 0.9-1.1 kg/ton aluminum, and most preferably 1.0 kg/ton aluminum; the refining agent is preferably MK4357B, a product provided by Zhengzhou West aluminum industries, inc.
In the invention, the primary skimming preferably thoroughly skims the dross on the surface of the aluminum liquid.
In the present invention, after the primary slag skimming, preferably, sampling is further performed, and the sampling method preferably includes:
and taking an effective sample at the position of about 1m away from the furnace wall at two sides of the furnace door, at the position of half of the depth of the hearth and at the position of 1/2 of the depth of the molten pool.
In the invention, after sampling, preferably, component analysis is carried out, and if the preferred components are qualified, the next procedure is carried out; if the components are not qualified, feeding materials or diluting until the components are qualified.
In the present invention, the component analysis is preferably followed by a furnace reversal, and the furnace reversal method preferably includes:
controlling the temperature, pouring the aluminum liquid from the smelting furnace into a holding furnace, and adding the aluminum-titanium intermediate alloy into the runner during the pouring.
In the present invention, the control temperature is preferably 750 to 770 ℃, more preferably 755 to 765 ℃, and most preferably 760 ℃.
In the present invention, the temperature of the modifier is preferably 740 to 750 ℃, more preferably 742 to 748 ℃, and most preferably 745 ℃; the addition amount of the alterant is preferably 2-4%, more preferably 2.5-3.5%, and most preferably 3% of the total amount of furnace burden (the total mass of the alloy raw materials); the aluminum rare earth master alloy is preferably a product with the model of Al-10RE provided by Xuzhou Huazhong aluminum industry Co.
In the present invention, it is preferable that the addition of the alterant further includes stirring, the stirring is preferably electromagnetic stirring, and the electromagnetic stirring time is preferably 15 to 25min, and more preferably 20min.
In the present invention, the temperature of the secondary refining is preferably 740 to 750 ℃, and more preferably 745 ℃; the time for the secondary refining is preferably 18-22 min, and more preferably 20min; the adding amount of the refining agent in the secondary refining process is preferably 0.4-0.5 kg/ton aluminum (alloy liquid), and more preferably 0.45 kg/ton aluminum; the source of the refining agent is the same as that described in the above technical scheme, and is described in detail in this step.
In the invention, the secondary skimming preferably skims dross on the surface of the aluminum liquid.
In the present invention, the temperature of the standing treatment is preferably 735 to 755 ℃, more preferably 740 to 750 ℃, and most preferably 745 ℃; the time of the standing treatment is preferably 20 to 40min, more preferably 25 to 35min, and most preferably 30min.
In the invention, the purification treatment is preferably external purification treatment, and the online degassing is preferably carried out by adopting a vacuum degassing device; measuring the hydrogen content in a launder when the production is preferably 1 m; preferably, a filter plate is used, preferably a dual stage plate filter, more preferably a 30 mesh +50 mesh dual stage plate filter.
In the invention, the temperature of the pan head in the casting process is controlled preferably to be 680-700 ℃, more preferably to be 685-695 ℃, and most preferably to be 690 ℃; the casting speed is preferably 50 to 60mm/min, more preferably 52 to 58mm/min, and most preferably 54 to 56mm/min; the water quantity of a single cast ingot is preferably controlled to be 12-18 m 3 H, more preferably from 14 to 16m 3 H, most preferably 15m 3 /h。
In the present invention, the diameter of the ingot obtained by the casting is preferably 350 to 450mm, more preferably 360 to 430mm, and most preferably 380mm.
In an embodiment of the present invention, the method for preparing the 4032 aluminum alloy preferably includes:
preparing materials: according to the content of each element in 4032, calculating the addition amount of the raw material, wherein the mass fraction of each element in the 4032 alloy is as follows: 11.8 to 12.4 percent of silicon, 0.85 to 0.95 percent of copper, 0.95 to 1.05 percent of magnesium, 0.65 to 0.75 percent of nickel, 0.01 to 0.03 percent of titanium, less than 0.30 percent of iron and less than 0.08 percent of other elements; the silicon is 95# instant silicon, the copper is an electrolytic pure copper plate, the magnesium is a pure magnesium ingot, the nickel is 10% aluminum-nickel intermediate alloy, and the titanium is 10% aluminum-titanium intermediate alloy.
Feeding: pouring the 95# instant silicon into the furnace bottom at one time, and then adding the needed aluminum ingot and the aluminum-nickel intermediate alloy.
Heating and melting: the temperature is raised to 760 ℃ to melt.
Adding copper: and adding the copper plate into the melt when the furnace burden softens the lower couch and can completely submerge the copper plate.
Stirring: when the melting is complete, starting electromagnetic stirring for 20min.
Adding magnesium: and pressing the magnesium ingot into the melt by using the feeding frame, starting electromagnetic stirring again for 20min after the magnesium ingot is completely melted, and stirring the molten aluminum thoroughly by assisting manual stirring for 10min.
Refining: the refining temperature is controlled at 750 +/-8 ℃, the refining time is controlled at 20 +/-2 minutes, the dosage of a refining agent is 0.8-1.2 kg/ton of aluminum, and the refining agent is provided by Zhengzhou West aluminum industry Limited and has the model of MK4357B.
Slagging-off: completely removing dross on the surface of the aluminum liquid.
Sampling: two effective samples are respectively taken at the position of the two sides of the furnace door, which is about 1m away from the furnace wall, at the position of half of the depth of the hearth and at the position of 1/2 of the depth of the molten pool.
Component analysis: if the components are qualified, the next procedure is carried out; if the component is not qualified, feeding or diluting the raw materials until the component is qualified.
Turning down the furnace: controlling the temperature to be 750-770 ℃, pouring the aluminum liquid into a holding furnace from a smelting furnace, and adding 10% of aluminum-titanium intermediate alloy into a runner during pouring.
Adding modifier aluminum rare earth intermediate alloy: adding an aluminum rare earth intermediate alloy which accounts for 2 to 4 percent of the total weight of the furnace charge at the temperature of between 740 and 750 ℃, wherein the aluminum rare earth intermediate alloy is provided by Xuzhou Huazhong aluminum industry Co., ltd, and has the model of Al-10RE.
Stirring in a holding furnace: electromagnetic stirring is started for 20min.
Refining in a holding furnace: the refining temperature is controlled to be 745 +/-5 ℃, the refining time is controlled to be 20 +/-2 minutes, and the dosage of the refining agent is 0.4-0.5 kg/ton of aluminum.
Slagging-off: completely removing dross on the surface of the aluminum liquid.
Standing treatment: controlling the standing temperature to be 735-755 ℃, and the standing time to be 30 minutes.
Beginning casting-purification treatment outside the furnace: and (3) degassing on line by using a vacuum degassing device, measuring the hydrogen content in a launder when the production is 1m, wherein a 30-mesh + 50-mesh double-stage plate type filtration plate is adopted as a filter plate.
And (5) finishing casting and inspecting a finished product.
The key point of the invention is the selection and addition of the alterant, wherein the addition amount of the alterant is Al-10RE intermediate alloy accounting for 2-4% of the total weight of the furnace burden; the casting parameters, particularly the casting temperature, are controlled to 680-700 ℃ and when the temperature is too high, the tendency of generating pores increases. The invention uses the aluminum rare earth alloy for modification, not only has good modification effect, but also reduces the tendency of hydrogen absorption of the melt, and avoids the problem that the cast bar is easy to generate air holes after the strontium is modified.
Example 1
Charging: 5500kg of 95% instant silicon is poured into the furnace bottom at one time, 29000kg of aluminum ingot is added to completely cover the instant silicon, 2650kg of aluminum-nickel intermediate alloy is added, the furnace door is closed, and the temperature is raised.
Copper addition: when about half of the furnace burden is melted, 340kg of copper plates are added to different positions in the furnace together, and the furnace door is closed to continue heating.
And (3) heating: in the whole temperature rise process, no stirring is carried out, the temperature of the aluminum liquid is raised to 760 ℃, then the natural gas heating is stopped, and the temperature is kept for 20 minutes.
Stirring: at this time, the electromagnetic stirring was started for 20 minutes, and the manual stirring was performed for 10 minutes while the electromagnetic stirring was being performed.
Adding magnesium: and pressing 380kg of magnesium ingot into the melt by using a feeding frame, after the magnesium ingot is completely melted, starting electromagnetic stirring again for 20min, and stirring the molten aluminum thoroughly by assisting manual stirring for 10min.
Refining: heating to 750 ℃ to start refining, wherein the dosage of a refining agent is 38kg, and the refining time is 20 minutes.
Slagging off: completely removing dross on the surface of the aluminum liquid.
Sampling: and taking an effective sample at the position of about 1m away from the furnace wall at two sides of the furnace door, at the position of half of the depth of the hearth and at the position of 1/2 of the depth of the molten pool.
And (3) component analysis: if the components are qualified, the next procedure is carried out; if the components are not qualified, supplementing the materials or diluting the materials until the components are qualified; the alloy finally prepared comprises 12.009% of silicon, 0.89% of copper, 0.998% of magnesium, 0.689% of nickel and 0.23% of iron.
Turning down the furnace: pouring molten aluminum into a holding furnace from a smelting furnace at a converter reversing temperature of 763 ℃, and adding 38kg of 10% aluminum-titanium intermediate alloy into a runner during converter reversing.
Adding modifier aluminum rare earth intermediate alloy: 870kg of aluminum rare earth master alloy is added at 745 ℃.
Stirring in a holding furnace: electromagnetic stirring is started for 20min.
Refining in a holding furnace: the refining temperature is controlled at 747 ℃, the refining time is controlled for 19 minutes, and the dosage of the refining agent is 20kg.
Slagging off: completely removing dross on the surface of the aluminum liquid.
Standing treatment: the standing temperature is controlled to be 753 ℃, and the standing time is controlled to be 30 minutes.
Beginning casting-purification treatment outside the furnace: and (3) degassing on line by using a vacuum degassing device, measuring the hydrogen content in a launder when the production is 1m, wherein the hydrogen content is 0.076ml/100gAl, and filtering by using a 30-mesh and 50-mesh double-stage plate filter.
Selection of casting parameters: the diameter of the casting rod is 380mm, 16 casting rods are cast each time, the casting speed is 55mm/min, and the total water flow is 245m 3 And h, controlling the temperature of the pan head to 690 ℃.
Metallographic detection is carried out on the aluminum alloy prepared in the embodiment 1 of the invention, high power detection is carried out under a metallographic microscope, and the detection result is shown in figure 1.
Example 2
Charging: firstly 5200kg of 95 percent instant silicon is poured into the bottom of the furnace at one time, then 27500kg of aluminum ingot is added to cover the instant silicon completely, 2500kg of aluminum-nickel intermediate alloy is added, the furnace door is closed, and the temperature is raised.
Copper addition: when about half of the furnace charge is melted, a total of 320kg copper plates are added to different positions in the furnace, and the furnace door is closed to continue heating.
And (3) heating: in the whole temperature rising process, no stirring is carried out, the temperature of the aluminum liquid is raised to 760 ℃, then the natural gas heating is stopped, and the temperature is kept for 20 minutes.
Stirring: at this time, the electromagnetic stirring was started for 20 minutes, and the manual stirring was performed for 10 minutes while the electromagnetic stirring was being performed.
Adding magnesium: and pressing 360kg of magnesium ingot into the melt by using a feeding frame, starting electromagnetic stirring again for 20min after the magnesium ingot is completely melted, and stirring for 10min by manual work to thoroughly stir the aluminum melt.
Refining: raising the temperature to 750 ℃ to start refining, wherein the dosage of a refining agent is 36kg, and the refining time is 20 minutes.
Slagging-off: completely removing dross on the surface of the aluminum liquid.
Sampling: and taking an effective sample at the position of about 1m away from the furnace wall at two sides of the furnace door, at the position of half of the depth of the hearth and at the position of 1/2 of the depth of the molten pool.
And (3) component analysis: if the components are qualified, the next procedure is carried out; if the components are not qualified, supplementing the materials or diluting the materials until the components are qualified; the alloy finally prepared comprises 12.152 percent of silicon, 0.91 percent of copper, 0.98 percent of magnesium, 0.71 percent of nickel and 0.24 percent of iron
Turning down the furnace: pouring the aluminum liquid into a holding furnace from a smelting furnace at 765 ℃ of the converter reversing temperature, and adding 36kg of 10% aluminum-titanium intermediate alloy into a runner during converter reversing.
Adding modifier aluminum rare earth intermediate alloy: at 745 deg.C, 820kg of aluminum rare earth master alloy is added.
Stirring in a holding furnace: electromagnetic stirring is started for 20min.
Refining in a holding furnace: the refining temperature is controlled at 745 ℃, the refining time is controlled at 20 minutes, and the dosage of the refining agent is 19kg.
Slagging-off: completely removing dross on the surface of the aluminum liquid.
Standing treatment: the standing temperature is controlled to be 755 ℃, and the standing time is controlled to be 30 minutes.
Beginning casting-purification treatment outside the furnace: and (3) performing online degassing by using a vacuum degassing device, measuring the hydrogen content in a launder when the production is 1m, wherein the hydrogen content is 0.089ml/100gAl, and filtering by using a 30-mesh and 50-mesh double-stage plate type filter plate.
Selection of casting parameters: the diameter of the casting rod is 380mm, 16 casting rods are cast at each time, the casting speed is 55mm/min, and the total water flow is 248m 3 H, pan head temperature control 693 ℃.
According to the method of the embodiment 1, the metallographic detection is carried out on the aluminum alloy prepared in the embodiment 2 of the invention, and the detection result is shown in fig. 2, so that the aluminum alloy is loose in the first stage, has no air holes, is free of primary crystal silicon, and is point-shaped.
Example 3
Charging: firstly, 4940kg of 95% instant silicon is poured into the bottom of the furnace at one time, 26100kg of aluminum ingot is added to completely cover the instant silicon, 2350kg of aluminum-nickel intermediate alloy is added, and then the furnace door is closed to start heating.
Copper addition: when about half of the furnace charge is melted, a total of 300kg of copper plates are added to different positions in the furnace, and the furnace door is closed to continue heating.
And (3) heating: in the whole temperature rising process, no stirring is carried out, the temperature of the aluminum liquid is raised to 760 ℃, then the natural gas heating is stopped, and the temperature is kept for 20 minutes.
Stirring: at this time, the electromagnetic stirring was started for 20 minutes, and the manual stirring was performed for 10 minutes while the electromagnetic stirring was being performed.
Adding magnesium: and (3) pressing 340kg of magnesium ingot into the melt by using a feeding frame, after the magnesium ingot is completely melted, starting electromagnetic stirring again for 20min, and stirring the mixture for 10min by manual stirring to thoroughly stir the aluminum melt.
Refining: the temperature is increased to 752 ℃ to start refining, the dosage of the refining agent is 34kg, and the refining time is 20 minutes.
Slagging-off: completely removing dross on the surface of the aluminum liquid.
Sampling: two effective samples are respectively taken at the position of the two sides of the furnace door, which is about 1m away from the furnace wall, at the position of half of the depth of the hearth and at the position of 1/2 of the depth of the molten pool.
And (3) component analysis: if the components are qualified, the next procedure is carried out; if the components are not qualified, supplementing the materials or diluting the materials until the components are qualified; the alloy finally prepared comprises 12.23% of silicon, 0.89% of copper, 1.01% of magnesium, 0.72% of nickel and 0.23% of iron.
Turning down the furnace: and the converter reversing temperature is 763 ℃, molten aluminum is poured into the holding furnace from the smelting furnace, and 34kg of 10% aluminum-titanium intermediate alloy is added into the runner during converter reversing.
Adding modifier aluminum rare earth intermediate alloy: 780kg of aluminum rare earth intermediate alloy is added at 747 ℃.
Stirring in a holding furnace: electromagnetic stirring is started for 20min.
Refining in a holding furnace: the refining temperature is controlled at 748 ℃, the refining time is controlled at 20 minutes, and the dosage of the refining agent is 18kg.
Slagging off: completely removing dross on the surface of the aluminum liquid.
Standing treatment: the standing temperature is controlled to be 752 ℃, and the standing time is controlled to be 30 minutes.
Beginning casting-purification treatment outside the furnace: and (3) performing online degassing by using a vacuum degassing device, measuring the hydrogen content in a launder when the production is 1m, wherein the hydrogen content is 0.101ml/100gAl, and filtering by using a 30-mesh and 50-mesh double-stage plate type filter plate.
Selection of casting parameters: the diameter of the casting rod is 380mm, 16 casting rods are cast each time, the casting speed is 55mm/min, and the total water flow is 250m 3 /h, pan head temperature control 692 ℃.
According to the method of the embodiment 1, the metallographic detection is carried out on the aluminum alloy prepared in the embodiment 3 of the invention, and the detection result is shown in fig. 3, so that the aluminum alloy is loose in the first stage, has no air holes, is free of primary crystal silicon, and is point-shaped.
Performance detection
The mechanical properties of the as-cast 4032 alloy prepared in the embodiment are tested according to the standard of a sample and a method for a tensile test of wrought aluminum, magnesium and alloy processing products thereof of the national standard GB/T16865-2013, and the detection results are as follows:
| sample (I) | Yield strength | Tensile strength | Elongation percentage |
| Example 1 | 262MPa | 315MPa | 11.5％ |
| Example 2 | 264MPa | 310MPa | 11.4％ |
| Example 3 | 251MPa | 298MPa | 10.6％ |
The invention solves the problems that the 4032 modification process is not easy to master and the modification effect is poor, and the alloy with good comprehensive performance can be obtained after rare earth modification. The aluminum rare earth alloy is used for modification, so that the aluminum rare earth alloy has a good modification effect, the hydrogen absorption tendency of the melt is reduced, and the 4032 alloy which is free of pores and good in structure is easily obtained.
While the invention has been described and illustrated with reference to specific embodiments thereof, these descriptions and illustrations do not limit the invention. It will be clearly understood by those skilled in the art that various changes in form and details may be made therein without departing from the true spirit and scope of the invention as defined by the appended claims, to adapt a particular situation, material, composition of matter, substance, method or process to the objective, spirit and scope of this application. All such modifications are intended to be within the scope of the claims appended hereto. Although the methods disclosed herein have been described with reference to particular operations being performed in a particular order, it should be understood that these operations may be combined, sub-divided, or reordered to form equivalent methods without departing from the teachings of the present disclosure. Accordingly, unless specifically indicated herein, the order and grouping of the operations is not a limitation of the present application.
Claims (10)
1. A method of making a 4032 aluminum alloy, comprising:
the preparation method comprises the following steps of (1) blending and melting alloy raw materials, then carrying out primary refining, primary slag skimming, turning down, adding a modifier, carrying out secondary refining, secondary slag skimming, standing, purifying, and casting to obtain 4032 aluminum alloy;
the alterant is aluminum rare earth intermediate alloy.
2. The method of claim 1, wherein the ingredients are:
11.8 to 12.4 weight percent of silicon,
0.85 to 0.95 weight percent of copper,
0.95 to 1.05 weight percent of magnesium,
0.65 to 0.75 weight percent of nickel,
0.01 to 0.03 weight percent of titanium,
less than 0.30wt% of iron,
impurities are less than 0.08wt percent,
the balance being Al.
3. The method of claim 1, wherein the melting temperature is 740 to 780 ℃.
4. The method according to claim 1, wherein the temperature of the primary refining is 740 to 760 ℃;
the time of the primary refining is 18 to 22 minutes.
5. The method according to claim 1, wherein the temperature during the furnace reversing process is controlled to be 750-770 ℃, and the aluminum-titanium intermediate alloy is added into the melt during the furnace reversing process.
6. The method according to claim 1, wherein the temperature of the added alterant is 740 to 750 ℃;
the addition mass of the alterant is 2-4% of the mass of the alloy liquid.
7. The method according to claim 1, wherein the temperature of the secondary refining is 740 to 750 ℃; the time of the secondary refining is 18-22 min.
8. The method according to claim 1, wherein the temperature of the standing treatment is 735-755 ℃; the standing treatment time is 20-40 min.
9. The method of claim 1, wherein a vacuum degassing device is used for on-line degassing during the purification treatment; a filter plate is adopted, and the filter plate is a double-stage plate type filter.
10. The method according to claim 1, wherein the pan head temperature during casting is controlled to be 680-700 ℃; the casting speed is 50-60 mm/min; the water quantity of a single cast ingot is controlled to be 12-18 m 3 /h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211046639.4A CN115961164A (en) | 2022-08-30 | 2022-08-30 | Preparation method of 4032 aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211046639.4A CN115961164A (en) | 2022-08-30 | 2022-08-30 | Preparation method of 4032 aluminum alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115961164A true CN115961164A (en) | 2023-04-14 |
Family
ID=87351685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211046639.4A Pending CN115961164A (en) | 2022-08-30 | 2022-08-30 | Preparation method of 4032 aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115961164A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090297394A1 (en) * | 2004-12-02 | 2009-12-03 | Cast Centre Pty Ltd | Aluminium casting alloy |
| CN105200257A (en) * | 2015-10-20 | 2015-12-30 | 北京工业大学 | Method of metamorphosing hypo eutectic aluminum-silicon alloy by using rear earth Er |
| CN105401014A (en) * | 2015-12-18 | 2016-03-16 | 西南铝业（集团）有限责任公司 | Smelting method of 4032 aluminum alloy |
| CN106756151A (en) * | 2016-12-16 | 2017-05-31 | 镇江创智特种合金科技发展有限公司 | A kind of method of the rotten AlSiCu alloys of rare earth Er |
| WO2018184400A1 (en) * | 2017-04-05 | 2018-10-11 | 江苏宏德特种部件股份有限公司 | Synergistic method for metamorphism and microalloying of hypoeutectic casting al-si alloy |
| CN111172435A (en) * | 2020-01-14 | 2020-05-19 | 包头市慧金新材料科技有限公司 | Process method for casting aluminum-silicon alloy by modifying rare earth |
| CN113250356A (en) * | 2021-04-14 | 2021-08-13 | 甘肃东兴铝业有限公司 | Production process of aluminum alloy curtain wall plate strip base material for building |
-
2022
- 2022-08-30 CN CN202211046639.4A patent/CN115961164A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090297394A1 (en) * | 2004-12-02 | 2009-12-03 | Cast Centre Pty Ltd | Aluminium casting alloy |
| CN105200257A (en) * | 2015-10-20 | 2015-12-30 | 北京工业大学 | Method of metamorphosing hypo eutectic aluminum-silicon alloy by using rear earth Er |
| CN105401014A (en) * | 2015-12-18 | 2016-03-16 | 西南铝业（集团）有限责任公司 | Smelting method of 4032 aluminum alloy |
| CN106756151A (en) * | 2016-12-16 | 2017-05-31 | 镇江创智特种合金科技发展有限公司 | A kind of method of the rotten AlSiCu alloys of rare earth Er |
| WO2018184400A1 (en) * | 2017-04-05 | 2018-10-11 | 江苏宏德特种部件股份有限公司 | Synergistic method for metamorphism and microalloying of hypoeutectic casting al-si alloy |
| CN111172435A (en) * | 2020-01-14 | 2020-05-19 | 包头市慧金新材料科技有限公司 | Process method for casting aluminum-silicon alloy by modifying rare earth |
| CN113250356A (en) * | 2021-04-14 | 2021-08-13 | 甘肃东兴铝业有限公司 | Production process of aluminum alloy curtain wall plate strip base material for building |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101624671B (en) | Large-diameter 7005 aluminum alloy round ingot and preparation method thereof | |
| CN108396204B (en) | Hypoeutectic aluminum-silicon alloy casting and process method for improving performance thereof | |
| CN102140589B (en) | Microalloy smelting process for aluminum-magnesium-silicon aluminum alloy | |
| CN104561704A (en) | Process for producing large-size 7055 aluminum alloy round ingot | |
| WO2023125263A1 (en) | Composite rare earth alloy for aluminum alloy modification and preparation method therefor | |
| CN103981445A (en) | Process for producing H13 hot work die steel | |
| CN108546850A (en) | A kind of production method of 6101 aluminum alloy plate materials of high conductivity | |
| CN112609113B (en) | High-strength aluminum alloy ingot and preparation method thereof | |
| CN104532078A (en) | AHS aluminum alloy and aluminum alloy extruded rod thereof | |
| CN111020305A (en) | Aluminum alloy composite material skin material flat ingot and manufacturing method thereof | |
| CN104372216A (en) | Aluminum alloy 7A04 and hot-top casting technology thereof | |
| CN104404323A (en) | 7xxx aluminium alloy hot-top casting process and aluminium alloy prepared by adopting same | |
| CN105219992A (en) | A kind of preparation method of AlV55 master alloy | |
| CN106978557A (en) | A kind of magnesium lithium alloy and preparation method thereof | |
| CN102847898B (en) | A kind of electrolytic aluminium liquid directly carries out the method for casting production | |
| CN112593127A (en) | Cast aluminum alloy and preparation method thereof | |
| CN115961164A (en) | Preparation method of 4032 aluminum alloy | |
| CN104372217A (en) | Aluminum alloy 7050 and hot-top casting technology thereof | |
| CN104451292A (en) | 7A85 aluminum alloy | |
| CN114000020B (en) | Ingot for large-size die forging and preparation method thereof | |
| CN103993193B (en) | A kind of zinc die casting alloys low melting point is containing strontium long-acting alterant and Modification Manners thereof | |
| CN110438378A (en) | A kind of 2 line aluminium alloy melting and casting methods | |
| CN102952956B (en) | Electrolytic aluminum liquid microalloyed six-membered intermediate alloy and preparation and use method thereof | |
| CN109652668B (en) | Production method of aluminum-copper intermediate alloy | |
| CN107893178A (en) | A kind of preparation method of high-quality aluminum Ti-B alloy rod |
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 |