CN108842102A - A kind of doorframe high-strength aluminum alloy and its preparation process - Google Patents
A kind of doorframe high-strength aluminum alloy and its preparation process Download PDFInfo
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- CN108842102A CN108842102A CN201810677219.3A CN201810677219A CN108842102A CN 108842102 A CN108842102 A CN 108842102A CN 201810677219 A CN201810677219 A CN 201810677219A CN 108842102 A CN108842102 A CN 108842102A
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- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
Abstract
The invention discloses a kind of doorframe high-strength aluminum alloy and its preparation processes, are made of the raw material of following weight ratio：Si 0.55-0.57%, Mg 0.56-0.58%, Zn 0.22-0.24%, Co 0.35-0.37%, V 0.09-0.11%, Ti 0.12-0.14%, Nb 0.03-0.05%, Cr 0.23-0.25%, Ce 0.02-0.04%, Sc 0.01-0.03%, surplus are aluminium and inevitable other impurities.The present invention passes through addition Co, V, Ti, Nb element compound in aluminium alloy and the specific preparation technology parameter of design, recrystallization and crystal grain is inhibited to grow up, it enables aluminum alloy to profile and obtains single fibrous crystal grain tissue in the direction of extrusion, improve the intensity and corrosion resistance of aluminium alloy.
Description
Technical field
The present invention relates to aluminum alloy processing technology fields, and in particular to a kind of doorframe high-strength aluminum alloy and its preparation work
Skill.
Background technique
Aluminum alloy doorframe is to process surface-treated aluminium alloy extrusions through blanking, punching, groove milling, tapping, production etc.
The doorframe component that technical face is fabricated to, then be assembled together with connector, sealing material and opening and closing Hardware fitting.Due to
It is made of to directly adopt aluminium alloy, this requires for making doorframe aluminium alloy intensity with higher, fracture toughness and excellent
Corrosion resistance, to improve impact-absorbing characteristics, bend resistance brokenness and resistance to persistence etc..But current aluminum alloy doorframe makes
Used time is easy to be scratched by foreign object extension, is corroded so as to cause entire aluminum alloy doorframe by air and other substances, so as to cause
Aging, the damage of entire aluminum alloy doorframe, service life shorten, and frequent doorframe of replacing increases cost again.
In view of the above-mentioned problems, being retrieved to the prior art, in Chinese invention patent application 201410816597.7（It is public
Open on April 2015 day 22）It discloses a kind of anticorrosion aluminium doorframe, including aluminium alloy ontology and is coated in aluminium alloy
The protective coating of body surface, the aluminium alloy are formed by aluminium and copper high-temperature fusion, and the protective coating is by EP rubbers, dispersion
Agent, filler and tackifier composition, the dispersing agent are ethylene-ethyl acrylate copolymer, and the filler is talcum powder,
The tackifier is ethylenebis stearic amide, and weight percent shared by each ingredient is respectively in the protective coating：It is described
EP rubbers accounts for 66%-81%, and the ethylene-ethyl acrylate copolymer accounts for 3%-8%, and the talcum powder accounts for 15%-21%, the Asia
The double stearic amides of ethyl account for 1%-5%.Aluminium alloy of the present invention performance itself is stablized, and surface has corrosion resistance by protective coating
Good, intensity is high, and quality is stablized, at low cost, the good feature of using effect.But aluminium alloy resistance to corrosion itself is insufficient, only leans on
The coating of surface coating is protected, it is difficult to it plays a protective role, meanwhile, coating is more with respect to aluminium alloy aging speed itself
Fastly, to be difficult to form the effective protection to aluminium alloy ontology, also, the aluminium alloy ontology constituent is simple, and intensity is low.
And in Chinese invention patent application 201611140842.2（Publication date on June 9th, 2017）Disclose a kind of corrosion resistant
The aluminum alloy doors and windows of erosion, the corrosion resistant coating including aluminium alloy ontology and aluminum alloy surface, the aluminium alloy by aluminium, titanium, nickel,
Chromium melts, and the corrosion resistant coating is made of chloridized polyolefin coating, filler, plasticiser and coupling agent, described
Chloridized polyolefin coating is one of chlorinated rubber, highly-chlorinated polyethylene or chlorinated polypropylene, and the filler is oxidation
Aluminium, the plasticiser are to face dioctyl phthalate.Aluminium alloy of the present invention satisfactory mechanical property itself, and there is centainly resistance to
Corrosivity, surface are further protected by corrosion resistant coating, are had acid/alkali-corrosion-resistant, are hardly damaged, are with long service life
Feature.The aluminum alloy doors and windows corrosion resistance obtains certain promotion, but still remains resistance to corrosion deficiency problem, meanwhile,
There is also the low problems of intensity.
Summary of the invention
The purpose of the present invention is being directed to problem of the prior art, a kind of doorframe high-strength aluminum alloy and its preparation side are provided
Method inhibits recrystallization by addition Co, V, Ti, Nb element compound in aluminium alloy and the specific preparation technology parameter of design
It grows up with crystal grain, enables aluminum alloy to profile and obtain single fibrous crystal grain tissue in the direction of extrusion, improve the intensity of aluminium alloy
And corrosion resistance.
In order to realize above-mentioned purpose of the invention, spy uses following technical scheme：
A kind of doorframe high-strength aluminum alloy, is made of the raw material of following weight ratio：Si 0.55-0.57%, Mg 0.56-
0.58%, Zn 0.22-0.24%, Co 0.35-0.37%, V 0.09-0.11%, Ti 0.12-0.14%, Nb 0.03-
0.05%, Cr 0.23-0.25%, Ce 0.02-0.04%, Sc 0.01-0.03%, surplus are aluminium and inevitable other impurities.
Preferably, formula rate weight percent meter is as follows：Si 0.56%, Mg 0.57%, Zn 0.23%, Co
0.36%, V 0.10%, Ti 0.13%, Nb 0.04%, Cr 0.24%, Ce 0.03%, Sc 0.02%, surplus are aluminium and can not
The other impurities avoided.
The present invention also provides the preparation processes of above-mentioned doorframe high-strength aluminum alloy, include the following steps：
（1）Aluminium ingot is put into and is heated up to 720-740 DEG C in furnace, heat preservation to aluminium ingot is melted；
（2）Slagging agent is uniformly spilled into furnace at 700-720 DEG C and is sufficiently stirred 20-25 minutes, with rake by molten aluminum table
Face dross removes；
（3）By step（2）Aluminum solutions are warming up to 740-760 DEG C, and Si, Mg, Zn, Co, Cr is added, and stirring makes alloy in 20-30 minutes
Element all melts to obtain aluminum alloy melt；
（4）High-purity argon gas injection refining is used at 720-740 DEG C of aluminum alloy melt temperature, refining time 35-45min has been refined
Liquid level dross is removed afterwards；
（5）Ce, Sc will be added in aluminum alloy melt after above-mentioned refining, and by Control for Kiln Temperature at 760-780 DEG C, keeps the temperature 20-
25min, whole Argon gas agitating；
（6）By step（5）In aluminum alloy melt when temperature is 720-760 DEG C, to be cast into ingot casting spare；It is added in casting process
V, to ingot casting crystal grain refinement, addition speed is 2-3m/min by Ti, Nb；It is refined online on casting chute, when refining is passed through high-purity
Argon gas, and flow successively through the aluminum alloy melt after refining and 120-160 revs/min of rotation speed, argon gas stream are set on chute
The getter and foamed ceramic filter plate that amount is 1-3 cubes m/h, carry out online degassing and filtration processing, and further purification is molten
Body finally obtains aluminium alloy cast ingot；
（7）Aluminium alloy cast ingot is subjected to homogenize process；
（8）It will be placed in air-heating furnace by homogenize process aluminium alloy cast ingot and be heated to 440-450 DEG C, it is fast according to squeezing
Then degree is cooled by water to room temperature no more than rods and bars of aluminium alloy is squeezed under the conditions of 0.9mm/s, extrusion ratio 35-45；
（9）Aluminium alloy rings are heat-treated using T6 heat treatment method；
（10）By step（9）In aluminium alloy rings carry out flaw detection processing, the measurement of mechanical performance analysis, conjunction is finally prepared
Lattice product.
Preferably, the step（4）, step（5）And step（6）In argon gas be purity >=99.7% high-purity argon gas.
Preferably, the step（2）In slagging agent additional amount account for the 0.3-0.5% of quality of ingot aluminum.
Preferably, the step（5）Middle argon flow is 14-16L/min, argon pressure 0.4-0.6Mpa.
Preferably, the step（6）In foamed ceramic filter plate porosity be 45-55ppi.
Preferably, the step（6）In foamed ceramic filter plate be 40PPi and 60PPi double-layer ceramic.
Preferably, the step（7）It is middle to use twin-stage homogenization technique to ingot casting homogenize process：First aluminium alloy is cast
Stick is heated up to 520-540 DEG C, keeps the temperature 2 hours；Then it is rapidly heated to 560-580 DEG C, keeps the temperature 1 hour；Aluminium after heat preservation
Alloy cast ingot is transferred quickly to carry out cooling treatment in cooling chamber, and transfer time is not more than 10 seconds；Use the side of misting cooling
Formula after aluminium alloy cast rod is cooled to 250 DEG C hereinafter, aluminium alloy cast ingot temperature reaches room temperature in 30min, then removes cooling chamber,
Aluminium alloy cast ingot is located
Preferably, the step（9）Middle T6 is heat-treated concrete technology：Solid solubility temperature is 520-540 DEG C, keeps the temperature 1-3 hours, cold
But transfer time is not more than 15 seconds, and aging technique carries out in 5 hours after quenching, 190-210 DEG C of aging temp temperature, time 5-
8 hours.
Compared with prior art, the present invention has following beneficial effect：
（1）The present invention solves the intensity of aluminium alloy and fracture toughness and anticorrosive by designing specific alloying component composition
Contradictory relation between performance enables aluminum alloy to have the advantages that high-intensitive, high-fracture toughness and excellent corrosion protection energy simultaneously.
（2）The present invention enables aluminium alloy grain size to reach one by strict control casting technique and heat treatment process
Grade crystal grain is (according to 3246.2 standard test of GB/T, crystal grain average area≤0.023mm2), so that aluminium alloy of the present invention has
There are high-intensitive, high impact-resistant toughness and excellent anti-fatigue ability.
（3）The present invention can inhibit recrystallization and crystal grain to grow up by Co, V, Ti, Nb element, and pass through strict control aluminium
The homogenization and extrusion process of alloy enable aluminum alloy to profile and obtain single fibrous crystal grain tissue in the direction of extrusion, realize
Intensity, fracture toughness and corrosion resistance greatly improve simultaneously.
（4）The present invention can further refine crystal grain by Ce, Sc, improve alloy mechanical property.
Specific embodiment
Invention is described in further detail below in conjunction with specific embodiment.
Embodiment 1
The doorframe high-strength aluminum alloy of the present embodiment, formula rate weight percent meter are as follows：Si 0.54%, Mg
0.55%, Zn 0.21%, Co 0.34%, V 0.08%, Ti 0.11%, Nb 0.02%, Cr 0.22%, Ce 0.02%, Sc
0.01%, surplus is aluminium and inevitable other impurities.
The present invention also provides the preparation processes of above-mentioned doorframe high-strength aluminum alloy, include the following steps：
（1）Aluminium ingot is put into and is heated up to 720-740 DEG C in furnace, heat preservation to aluminium ingot is melted；
（2）Slagging agent is uniformly spilled into furnace at 700-720 DEG C and is sufficiently stirred 20-25 minutes, with rake by molten aluminum table
Face dross removes；
（3）By step（2）Aluminum solutions are warming up to 740-760 DEG C, and Si, Mg, Zn, Co, Cr is added, and stirring makes alloy in 20-30 minutes
Element all melts to obtain aluminum alloy melt；
（4）High-purity argon gas injection refining is used at 720-740 DEG C of aluminum alloy melt temperature, refining time 35-45min has been refined
Liquid level dross is removed afterwards；
（5）Ce, Sc will be added in aluminum alloy melt after above-mentioned refining, and by Control for Kiln Temperature at 760-780 DEG C, keeps the temperature 20-
25min, whole Argon gas agitating；
（6）By step（5）In aluminum alloy melt when temperature is 720-760 DEG C, to be cast into ingot casting spare；It is added in casting process
V, to ingot casting crystal grain refinement, addition speed is 2-3m/min by Ti, Nb；It is refined online on casting chute, when refining is passed through high-purity
Argon gas, and flow successively through the aluminum alloy melt after refining and 120-160 revs/min of rotation speed, argon gas stream are set on chute
The getter and foamed ceramic filter plate that amount is 1-3 cubes m/h, carry out online degassing and filtration processing, and further purification is molten
Body finally obtains aluminium alloy cast ingot；
（7）Aluminium alloy cast ingot is subjected to homogenize process；
（8）It will be placed in air-heating furnace by homogenize process aluminium alloy cast ingot and be heated to 440-450 DEG C, it is fast according to squeezing
Then degree is cooled by water to room temperature no more than rods and bars of aluminium alloy is squeezed under the conditions of 0.9mm/s, extrusion ratio 35-45；
（9）Aluminium alloy rings are heat-treated using T6 heat treatment method；
（10）By step（9）In aluminium alloy rings carry out flaw detection processing, the measurement of mechanical performance analysis, conjunction is finally prepared
Lattice product.
Wherein, the step（4）, step（5）And step（6）In argon gas be purity >=99.7% high-purity argon gas.
Wherein, the step（2）In slagging agent additional amount account for the 0.3-0.5% of quality of ingot aluminum.
Wherein, the step（5）Middle argon flow is 14-16L/min, argon pressure 0.4-0.6Mpa.
Wherein, the step（6）In foamed ceramic filter plate porosity be 45-55ppi.
Wherein, the step（6）In foamed ceramic filter plate be 40PPi and 60PPi double-layer ceramic.
Wherein, the step（7）It is middle to use twin-stage homogenization technique to ingot casting homogenize process：First by aluminium alloy cast rod
It is heated up to 520-540 DEG C, keeps the temperature 2 hours；Then it is rapidly heated to 560-580 DEG C, keeps the temperature 1 hour；Aluminium after heat preservation closes
Golden ingot casting is transferred quickly to carry out cooling treatment in cooling chamber, and transfer time is not more than 10 seconds；Using the mode of misting cooling,
After aluminium alloy cast rod is cooled to 250 DEG C hereinafter, aluminium alloy cast ingot temperature reaches room temperature in 30min, then cooling chamber is removed, aluminium closes
Golden ingot casting is located
Wherein, the step（9）Middle T6 is heat-treated concrete technology：Solid solubility temperature is 520-540 DEG C, keeps the temperature 1-3 hours, cooling
Transfer time is not more than 15 seconds, and aging technique carries out in 5 hours after quenching, 190-210 DEG C of aging temp temperature, time 5-8
Hour.
Embodiment 2
The doorframe high-strength aluminum alloy of the present embodiment, formula rate weight percent meter are as follows：Si 0.58%, Mg
0.60%, Zn 0.25%, Co 0.38%, V 0.12%, Ti 0.15%, Nb 0.05%, Cr 0.26%, Ce 0.04%, Sc
0.03%, surplus is aluminium and inevitable other impurities.
The present invention also provides the preparation processes of above-mentioned doorframe high-strength aluminum alloy, include the following steps：
（1）Aluminium ingot is put into and is heated up to 720-740 DEG C in furnace, heat preservation to aluminium ingot is melted；
（2）Slagging agent is uniformly spilled into furnace at 700-720 DEG C and is sufficiently stirred 20-25 minutes, with rake by molten aluminum table
Face dross removes；
（3）By step（2）Aluminum solutions are warming up to 740-760 DEG C, and Si, Mg, Zn, Co, Cr is added, and stirring makes alloy in 20-30 minutes
Element all melts to obtain aluminum alloy melt；
（4）High-purity argon gas injection refining is used at 720-740 DEG C of aluminum alloy melt temperature, refining time 35-45min has been refined
Liquid level dross is removed afterwards；
（5）Ce, Sc will be added in aluminum alloy melt after above-mentioned refining, and by Control for Kiln Temperature at 760-780 DEG C, keeps the temperature 20-
25min, whole Argon gas agitating；
（6）By step（5）In aluminum alloy melt when temperature is 720-760 DEG C, to be cast into ingot casting spare；It is added in casting process
V, to ingot casting crystal grain refinement, addition speed is 2-3m/min by Ti, Nb；It is refined online on casting chute, when refining is passed through high-purity
Argon gas, and flow successively through the aluminum alloy melt after refining and 120-160 revs/min of rotation speed, argon gas stream are set on chute
The getter and foamed ceramic filter plate that amount is 1-3 cubes m/h, carry out online degassing and filtration processing, and further purification is molten
Body finally obtains aluminium alloy cast ingot；
（7）Aluminium alloy cast ingot is subjected to homogenize process；
（8）It will be placed in air-heating furnace by homogenize process aluminium alloy cast ingot and be heated to 440-450 DEG C, it is fast according to squeezing
Then degree is cooled by water to room temperature no more than rods and bars of aluminium alloy is squeezed under the conditions of 0.9mm/s, extrusion ratio 35-45；
（9）Aluminium alloy rings are heat-treated using T6 heat treatment method；
（10）By step（9）In aluminium alloy rings carry out flaw detection processing, the measurement of mechanical performance analysis, conjunction is finally prepared
Lattice product.
Wherein, the step（4）, step（5）And step（6）In argon gas be purity >=99.7% high-purity argon gas.
Wherein, the step（2）In slagging agent additional amount account for the 0.3-0.5% of quality of ingot aluminum.
Wherein, the step（5）Middle argon flow is 14-16L/min, argon pressure 0.4-0.6Mpa.
Wherein, the step（6）In foamed ceramic filter plate porosity be 45-55ppi.
Wherein, the step（6）In foamed ceramic filter plate be 40PPi and 60PPi double-layer ceramic.
Wherein, the step（7）It is middle to use twin-stage homogenization technique to ingot casting homogenize process：First by aluminium alloy cast rod
It is heated up to 520-540 DEG C, keeps the temperature 2 hours；Then it is rapidly heated to 560-580 DEG C, keeps the temperature 1 hour；Aluminium after heat preservation closes
Golden ingot casting is transferred quickly to carry out cooling treatment in cooling chamber, and transfer time is not more than 10 seconds；Using the mode of misting cooling,
After aluminium alloy cast rod is cooled to 250 DEG C hereinafter, aluminium alloy cast ingot temperature reaches room temperature in 30min, then cooling chamber is removed, aluminium closes
Golden ingot casting is located
Wherein, the step（9）Middle T6 is heat-treated concrete technology：Solid solubility temperature is 520-540 DEG C, keeps the temperature 1-3 hours, cooling
Transfer time is not more than 15 seconds, and aging technique carries out in 5 hours after quenching, 190-210 DEG C of aging temp temperature, time 5-8
Hour.
Embodiment 3
The doorframe high-strength aluminum alloy of the present embodiment, formula rate weight percent meter are as follows：Si 0.56%, Mg
0.57%, Zn 0.23%, Co 0.36%, V 0.10%, Ti 0.13%, Nb 0.04%, Cr 0.24%, Ce 0.03%, Sc
0.02%, surplus is aluminium and inevitable other impurities.
The present invention also provides the preparation processes of above-mentioned doorframe high-strength aluminum alloy, include the following steps：
（1）Aluminium ingot is put into and is heated up to 720-740 DEG C in furnace, heat preservation to aluminium ingot is melted；
（2）Slagging agent is uniformly spilled into furnace at 700-720 DEG C and is sufficiently stirred 20-25 minutes, with rake by molten aluminum table
Face dross removes；
（3）By step（2）Aluminum solutions are warming up to 740-760 DEG C, and Si, Mg, Zn, Co, Cr is added, and stirring makes alloy in 20-30 minutes
Element all melts to obtain aluminum alloy melt；
（4）High-purity argon gas injection refining is used at 720-740 DEG C of aluminum alloy melt temperature, refining time 35-45min has been refined
Liquid level dross is removed afterwards；
（5）Ce, Sc will be added in aluminum alloy melt after above-mentioned refining, and by Control for Kiln Temperature at 760-780 DEG C, keeps the temperature 20-
25min, whole Argon gas agitating；
（6）By step（5）In aluminum alloy melt when temperature is 720-760 DEG C, to be cast into ingot casting spare；It is added in casting process
V, to ingot casting crystal grain refinement, addition speed is 2-3m/min by Ti, Nb；It is refined online on casting chute, when refining is passed through high-purity
Argon gas, and flow successively through the aluminum alloy melt after refining and 120-160 revs/min of rotation speed, argon gas stream are set on chute
The getter and foamed ceramic filter plate that amount is 1-3 cubes m/h, carry out online degassing and filtration processing, and further purification is molten
Body finally obtains aluminium alloy cast ingot；
（7）Aluminium alloy cast ingot is subjected to homogenize process；
（8）It will be placed in air-heating furnace by homogenize process aluminium alloy cast ingot and be heated to 440-450 DEG C, it is fast according to squeezing
Then degree is cooled by water to room temperature no more than rods and bars of aluminium alloy is squeezed under the conditions of 0.9mm/s, extrusion ratio 35-45；
（9）Aluminium alloy rings are heat-treated using T6 heat treatment method；
（10）By step（9）In aluminium alloy rings carry out flaw detection processing, the measurement of mechanical performance analysis, conjunction is finally prepared
Lattice product.
Wherein, the step（4）, step（5）And step（6）In argon gas be purity >=99.7% high-purity argon gas.
Wherein, the step（2）In slagging agent additional amount account for the 0.3-0.5% of quality of ingot aluminum.
Wherein, the step（5）Middle argon flow is 14-16L/min, argon pressure 0.4-0.6Mpa.
Wherein, the step（6）In foamed ceramic filter plate porosity be 45-55ppi.
Wherein, the step（6）In foamed ceramic filter plate be 40PPi and 60PPi double-layer ceramic.
Wherein, the step（7）It is middle to use twin-stage homogenization technique to ingot casting homogenize process：First by aluminium alloy cast rod
It is heated up to 520-540 DEG C, keeps the temperature 2 hours；Then it is rapidly heated to 560-580 DEG C, keeps the temperature 1 hour；Aluminium after heat preservation closes
Golden ingot casting is transferred quickly to carry out cooling treatment in cooling chamber, and transfer time is not more than 10 seconds；Using the mode of misting cooling,
After aluminium alloy cast rod is cooled to 250 DEG C hereinafter, aluminium alloy cast ingot temperature reaches room temperature in 30min, then cooling chamber is removed, aluminium closes
Golden ingot casting is located
Wherein, the step（9）Middle T6 is heat-treated concrete technology：Solid solubility temperature is 520-540 DEG C, keeps the temperature 1-3 hours, cooling
Transfer time is not more than 15 seconds, and aging technique carries out in 5 hours after quenching, 190-210 DEG C of aging temp temperature, time 5-8
Hour.
Comparative example 1
The doorframe high-strength aluminum alloy of this comparative example example, formula rate weight percent meter are as follows：Si 0.54%, Mg
0.55%, Zn 0.21%, Co 0.30%, V 0.05%, Ti 0.09%, Nb 0.01%, Cr 0.22%, Ce 0.02%, Sc
0.01%, surplus is aluminium and inevitable other impurities.
Its preparation process and embodiment 1 are consistent.
Comparative example 2
The doorframe high-strength aluminum alloy of this comparative example, formula rate weight percent meter are as follows：Si 0.58%, Mg
0.60%, Zn 0.25%, Co 0.40%, V 0.13%, Ti 0.16%, Nb 0.06%, Cr 0.26%, Ce 0.04%, Sc
0.03%, surplus is aluminium and inevitable other impurities.
Its preparation process and embodiment 1 are consistent.
Comparative example 3
The doorframe high-strength aluminum alloy of this comparative example, formula rate weight percent meter are as follows：Si 0.56%, Mg
0.57%, Zn 0.23%, Co 0.36%, V 0.10%, Ti 0.13%, Nb 0.04%, Cr 0.24%, Ce 0.02%, Sc
0.01%, surplus is aluminium and inevitable other impurities.
Its preparation process and embodiment 1 are consistent
Comparative example 4
The doorframe high-strength aluminum alloy of the present embodiment, formula rate weight percent meter are as follows：Si 0.56%, Mg
0.57%, Zn 0.23%, Co 0.36%, V 0.10%, Ti 0.13%, Nb 0.04%, Cr 0.24%, Ce 0.03%, Sc
0.02%, surplus is aluminium and inevitable other impurities.
Its preparation process and embodiment 1 are consistent.
Experimental example
Tensile strength is carried out for aluminium alloy rings obtained by above-described embodiment 1-3 and comparative example 1-3, yield strength, is had no progeny
Elongation, fracture toughness and anti-stress corrosion performance test, concrete outcome are shown in Table 1.
Table 1
| Test item | Tensile strength（MPa） | Yield strength（MPa） | Elongation after fracture（%） | Fracture toughness（KIC） | Stress corrosion resistant（It） |
| Embodiment 1 | 393.5 | 358.4 | 17.5 | 38.9 | 38 |
| Embodiment 2 | 396.7 | 363.6 | 17.9 | 40.5 | 40 |
| Embodiment 3 | 403.5 | 369.1 | 18.6 | 42.7 | 41 |
| Comparative example 1 | 324.6 | 315.6 | 12.6 | 24.6 | 28 |
| Comparative example 2 | 338.7 | 319.6 | 13.5 | 28.9 | 32 |
| Comparative example 3 | 345.6 | 323.7 | 14.1 | 32.6 | 34 |
| Comparative example 4 | 353.8 | 328.5 | 14.6 | 34.7 | 36 |
As shown in Table 1, show that aluminium alloy rings prepared by the present invention have high intensity, high-fracture toughness and improved corrosion performance
Advantage, and by comparative example 1-4 it is found that addition alloying element Co, V, Ti, Nb, Cr, Ce and Sc content it is too high or too low
Aluminium alloy rings will be influenced will reduce the performances such as intensity, fracture toughness and the corrosion resistance of aluminium alloy rings.
In conclusion creativeness of the invention is mainly reflected in the following：
（1）The present invention solves the intensity of aluminium alloy extrusions and fracture toughness and resists by designing specific alloying component composition
Contradictory relation between corrosive nature enables aluminum alloy to profile while having high-intensitive, high-fracture toughness and excellent corrosion protection energy
The advantages of.
（2）The present invention enables aluminium alloy grain size to reach one by strict control casting technique and heat treatment process
Grade crystal grain is (according to 3246.2 standard test of GB/T, crystal grain average area≤0.026mm2), so that aluminium alloy of the present invention has
There are high-intensitive, high impact-resistant toughness and excellent anti-fatigue ability.
（3）The present invention can inhibit recrystallization and crystal grain to grow up by Co, V, Ti, Nb element, and pass through strict control aluminium
The homogenization and extrusion process of alloy enable aluminum alloy to profile and obtain single fibrous crystal grain tissue in the direction of extrusion, realize
Intensity, fracture toughness and corrosion resistance greatly improve simultaneously.
（4）The present invention can further refine crystal grain by Ce, Sc, improve alloy mechanical property.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of doorframe high-strength aluminum alloy, which is characterized in that be made of the raw material of following weight ratio：Si 0.55-
0.57%, Mg 0.56-0.58%, Zn 0.22-0.24%, Co 0.35-0.37%, V 0.09-0.11%, Ti 0.12-
0.14%, Nb 0.03-0.05%, Cr 0.23-0.25%, Ce 0.02-0.04%, Sc 0.01-0.03%, surplus are aluminium and can not
The other impurities avoided.
2. doorframe high-strength aluminum alloy according to claim 1, which is characterized in that formula rate weight percent meter is such as
Under：Si 0.56%, Mg 0.57%, Zn 0.23%, Co 0.36%, V 0.10%, Ti 0.13%, Nb 0.04%, Cr
0.24%, Ce 0.03%, Sc 0.02%, surplus are aluminium and inevitable other impurities.
3. the preparation process of -2 described in any item doorframe high-strength aluminum alloys according to claim 1, which is characterized in that including
Following steps：
（1）Aluminium ingot is put into and is heated up to 720-740 DEG C in furnace, heat preservation to aluminium ingot is melted；
（2）Slagging agent is uniformly spilled into furnace at 700-720 DEG C and is sufficiently stirred 20-25 minutes, with rake by molten aluminum table
Face dross removes；
（3）By step（2）Aluminum solutions are warming up to 740-760 DEG C, and Si, Mg, Zn, Co, Cr is added, and stirring makes alloy in 20-30 minutes
Element all melts to obtain aluminum alloy melt；
（4）High-purity argon gas injection refining is used at 720-740 DEG C of aluminum alloy melt temperature, refining time 35-45min has been refined
Liquid level dross is removed afterwards；
（5）Ce, Sc will be added in aluminum alloy melt after above-mentioned refining, and by Control for Kiln Temperature at 760-780 DEG C, keeps the temperature 20-
25min, whole Argon gas agitating；
（6）By step（5）In aluminum alloy melt when temperature is 720-760 DEG C, to be cast into ingot casting spare；It is added in casting process
V, to ingot casting crystal grain refinement, addition speed is 2-3m/min by Ti, Nb；It is refined online on casting chute, when refining is passed through high-purity
Argon gas, and flow successively through the aluminum alloy melt after refining and 120-160 revs/min of rotation speed, argon gas stream are set on chute
The getter and foamed ceramic filter plate that amount is 1-3 cubes m/h, carry out online degassing and filtration processing, and further purification is molten
Body finally obtains aluminium alloy cast ingot；
（7）Aluminium alloy cast ingot is subjected to homogenize process；
（8）It will be placed in air-heating furnace by homogenize process aluminium alloy cast ingot and be heated to 440-450 DEG C, it is fast according to squeezing
Then degree is cooled by water to room temperature no more than rods and bars of aluminium alloy is squeezed under the conditions of 0.9mm/s, extrusion ratio 35-45；
（9）Aluminium alloy rings are heat-treated using T6 heat treatment method；
（10）By step（9）In aluminium alloy rings carry out flaw detection processing, the measurement of mechanical performance analysis, conjunction is finally prepared
Lattice product.
4. the preparation process of doorframe high-strength aluminum alloy according to claim 3, which is characterized in that the step（4）,
Step（5）And step（6）In argon gas be purity >=99.7% high-purity argon gas.
5. the preparation process of doorframe high-strength aluminum alloy according to claim 3, which is characterized in that the step（2）
In slagging agent additional amount account for the 0.3-0.5% of quality of ingot aluminum.
6. the preparation process of doorframe high-strength aluminum alloy according to claim 3, which is characterized in that the step（5）
Middle argon flow is 14-16L/min, argon pressure 0.4-0.6Mpa.
7. the preparation process of doorframe high-strength aluminum alloy according to claim 3, which is characterized in that the step（6）
In foamed ceramic filter plate porosity be 45-55ppi.
8. the preparation process of doorframe high-strength aluminum alloy according to claim 3, which is characterized in that the step（6）
In foamed ceramic filter plate be 40PPi and 60PPi double-layer ceramic.
9. the preparation process of doorframe high-strength aluminum alloy according to claim 3, which is characterized in that the step（7）
It is middle to use twin-stage homogenization technique to ingot casting homogenize process：Aluminium alloy cast rod is first heated up to 520-540 DEG C, heat preservation 2 is small
When；Then it is rapidly heated to 560-580 DEG C, keeps the temperature 1 hour；Aluminium alloy cast ingot after heat preservation is transferred quickly in cooling chamber
Cooling treatment is carried out, transfer time is not more than 10 seconds；It is in 30min that aluminium alloy cast rod is cooling using the mode of misting cooling
To 250 DEG C hereinafter, after aluminium alloy cast ingot temperature reaches room temperature, then cooling chamber is removed, aluminium alloy cast ingot is located
10. the preparation process of doorframe high-strength aluminum alloy according to claim 3, which is characterized in that the step（9）
Middle T6 is heat-treated concrete technology：Solid solubility temperature is 520-540 DEG C, keeps the temperature 1-3 hours, and cooling transfer time is not more than 15 seconds,
Aging technique carries out in 5 hours after quenching, 190-210 DEG C of aging temp temperature, and the time is 5-8 hours.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575543A (en) * | 2020-05-21 | 2020-08-25 | 同曦集团有限公司 | High-melting-point heat-resistant aluminum alloy and preparation method thereof |
| CN112126830A (en) * | 2019-06-25 | 2020-12-25 | 广西大学 | Preparation and heat treatment process of novel high-strength and high-plasticity Al-Mg-Si-Sc aluminum alloy plate |
| CN112760530A (en) * | 2020-12-01 | 2021-05-07 | 浙江富丽华铝业有限公司 | Production process of high-toughness corrosion-resistant damping aluminum profile for doors and windows |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313403A (en) * | 2014-10-31 | 2015-01-28 | 无锡海特铝业有限公司 | Aluminium alloy with high strength and excellent cutting property and preparation method thereof |
| CN106011564A (en) * | 2016-07-25 | 2016-10-12 | 无锡海特铝业有限公司 | Coarse ring-free aluminum alloy bar and preparation method thereof |
| CN106148773A (en) * | 2016-08-17 | 2016-11-23 | 任静儿 | A kind of material preventing aluminium alloy from big crystal grain occurring |
| CN106191483A (en) * | 2016-08-17 | 2016-12-07 | 任静儿 | A kind of material preparation method preventing aluminium alloy from big crystal grain occurring |
| CN107447138A (en) * | 2017-08-10 | 2017-12-08 | 佛山市三水凤铝铝业有限公司 | A kind of anticorodal aluminium alloy section bar and its pressing method |
| CN108130465A (en) * | 2017-12-29 | 2018-06-08 | 安徽鑫发铝业有限公司 | A kind of high ferro high-strength abrasion-proof aluminum alloy section bar and preparation method thereof |
| CN108642333A (en) * | 2018-06-14 | 2018-10-12 | 安徽同盛环件股份有限公司 | A kind of high-strength corrosion-resisting aluminium alloy rings and its preparation process |
-
2018
- 2018-06-27 CN CN201810677219.3A patent/CN108842102A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313403A (en) * | 2014-10-31 | 2015-01-28 | 无锡海特铝业有限公司 | Aluminium alloy with high strength and excellent cutting property and preparation method thereof |
| CN106011564A (en) * | 2016-07-25 | 2016-10-12 | 无锡海特铝业有限公司 | Coarse ring-free aluminum alloy bar and preparation method thereof |
| CN106148773A (en) * | 2016-08-17 | 2016-11-23 | 任静儿 | A kind of material preventing aluminium alloy from big crystal grain occurring |
| CN106191483A (en) * | 2016-08-17 | 2016-12-07 | 任静儿 | A kind of material preparation method preventing aluminium alloy from big crystal grain occurring |
| CN107447138A (en) * | 2017-08-10 | 2017-12-08 | 佛山市三水凤铝铝业有限公司 | A kind of anticorodal aluminium alloy section bar and its pressing method |
| CN108130465A (en) * | 2017-12-29 | 2018-06-08 | 安徽鑫发铝业有限公司 | A kind of high ferro high-strength abrasion-proof aluminum alloy section bar and preparation method thereof |
| CN108642333A (en) * | 2018-06-14 | 2018-10-12 | 安徽同盛环件股份有限公司 | A kind of high-strength corrosion-resisting aluminium alloy rings and its preparation process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112126830A (en) * | 2019-06-25 | 2020-12-25 | 广西大学 | Preparation and heat treatment process of novel high-strength and high-plasticity Al-Mg-Si-Sc aluminum alloy plate |
| CN111575543A (en) * | 2020-05-21 | 2020-08-25 | 同曦集团有限公司 | High-melting-point heat-resistant aluminum alloy and preparation method thereof |
| CN111575543B (en) * | 2020-05-21 | 2022-04-01 | 同曦集团有限公司 | High-melting-point heat-resistant aluminum alloy and preparation method thereof |
| CN112760530A (en) * | 2020-12-01 | 2021-05-07 | 浙江富丽华铝业有限公司 | Production process of high-toughness corrosion-resistant damping aluminum profile for doors and windows |
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