CN104674087A - High-strength anticorrosion aluminum-alloy material and production process thereof - Google Patents
High-strength anticorrosion aluminum-alloy material and production process thereof Download PDFInfo
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- CN104674087A CN104674087A CN201510123326.8A CN201510123326A CN104674087A CN 104674087 A CN104674087 A CN 104674087A CN 201510123326 A CN201510123326 A CN 201510123326A CN 104674087 A CN104674087 A CN 104674087A
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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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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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
Abstract
The invention discloses a high-strength anticorrosion aluminum-alloy material. The aluminum-alloy material comprises the following chemical components by weight percent: 1.23 to 1.45 percent of Sr, 1.34 to 1.36 percent of Si, 1.25 to 2.28 percent of Nb, 4.52 to 4.55 percent of Cu, 1.56 to 3.27 percent of Ti, 0.22 to 0.24 percent of Mg, 0.01 to 0.02 percent of C, 16.1 to 16.8 percent of Cr, 1.25 to 2.24 percent of V, 12.1 to 13.3 percent of Ni, 0.015 to 0.018 percent of B, 3.35 to 3.38 percent of Mn, 2.51 to 2.85 percent of composite rare earth and the balance of Al and impurities; the composite rare earth comprises the following ingredients by weight percent: 12.5 to 13.8 percent of Tm, 1.1 to 1.5 percent of Tb, 11.8 to 14.9 percent of Pr, 14.3 to 15.5 percent of Nd, 2.8 to 3.2 percent of Lu, 17.2 to 17.3 percent of Sm and the balance of Ho. The high-strength anticorrosion aluminum alloy material is long in service life, high in strength, good in safety and high in friction resistance and corrosion resistance; by adopting the production process, the processing cost is reduced, the processing period is shortened, and the anticorrosion property and the welding property of the aluminum alloy can be improved.
Description
Technical field
The present invention relates to door and window fields, specifically a kind of aluminum alloy materials of high-strength corrosion-resisting and manufacture craft thereof.
Background technology
Aluminum alloy materials applies to building, civilian and industrial circle in a large number, especially a large amount of utilizations in logistic storage field, and the requirement that current industrial high-strength aluminum alloy material is much different, there is as required high strength, high tenacity and good machine-shaping property, highly corrosion resistant ability, having kinds of surface handling property or good heat treatment performance etc.Existing high-strength aluminum alloy material only meets above-mentioned partial condition, can not meet above-mentioned all conditions, especially in use serious wear, the problems such as work-ing life is short simultaneously; This also makes aluminum alloy materials in use be restricted, the usage quantity of impact height aluminium alloy.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming of above prior art, a kind of aluminum alloy materials and manufacture craft thereof of high-strength corrosion-resisting are proposed, the aluminum alloy materials not only long service life of this high-strength corrosion-resisting, and intensity is high, security is good, also has very strong rub resistance and corrosion resistance nature; This manufacture craft provided, can not only cut down finished cost, and shortens the process-cycle, and can improve the corrosion resistance of aluminium alloy and welding property etc., improves the quality of product.
In order to solve the problems of the technologies described above, technical scheme of the present invention is achieved in the following ways: the aluminum alloy materials providing a kind of high-strength corrosion-resisting, the mass percent of described aluminum alloy materials chemical composition is: Sr:1.23-1.45%, Si:1.34-1.36%, Nb:1.25-2.28%, Cu:4.52-4.55%, Ti:1.56-3.27%, Mg:0.22-0.24%, C:0.01-0.02%, Cr:16.1-16.8%, V:1.25-2.24%, Ni:12.1-13.3%, B:0.015-0.018%, Mn:3.35-3.38%, compound rare-earth: 2.51-2.85%, all the other are Al and impurity,
In described compound rare-earth, comprise following component by weight percentage: Tm:12.5-13.8%, Tb:1.1-1.5%, Pr:11.8-14.9%, Nd:14.3-15.5%, Lu:2.8-3.2%, Sm:17.2-17.3%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
The present invention also provides a kind of manufacture craft of aluminum alloy materials of high-strength corrosion-resisting, and this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 580-620 DEG C, and keep 30-35min, then furnace temperature rises to 655-670 DEG C, first put into compound rare-earth, insulation 30-35min, then rises to 715-725 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 10-15min, then put into Ni successively, B, Mn element, insulation 38-40min, then temperature is increased to 730-750 DEG C, omnidistance nitrogen blowing stirs, insulation 28-33min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 665-685 DEG C, the time remains on 4-6h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 655-670 DEG C, and pumpdown time is at 5-6h;
Step (3): carry out argon shield die casting at the temperature of 610-615 DEG C, after solidifying, temperature is remained on 332-335 DEG C, soaking time is 10-12h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 485-515 DEG C, insulation 20-25min, at the powdered graphite of its surface smear thickness at 0.12-0.15mm, then 410-415 DEG C is heated to, insulation 36-40min, then use water-cooled with the speed cool to room temperature of 11-15 DEG C/s, last clean surface, inspection size.
The present invention limits technical scheme further, the aluminum alloy materials of aforesaid high-strength corrosion-resisting, and the mass percent of described aluminum alloy materials chemical composition is: Sr:1.23%, Si:1.34%, Nb:1.25%, Cu:4.52%, Ti:1.56%, Mg:0.22%, C:0.01%, Cr:16.1%, V:1.25%, Ni:12.1%, B:0.015%, Mn:3.35%, compound rare-earth: 2.51%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:12.5%, Tb:1.1%, Pr:11.8%, Nd:14.3%, Lu:2.8%, Sm:17.2%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
The aluminum alloy materials of aforesaid high-strength corrosion-resisting, the mass percent of described aluminum alloy materials chemical composition is: Sr:1.28%, Si:1.35%, Nb:1.58%, Cu:4.53%, Ti:2.27%, Mg:0.23%, C:0.01%, Cr:16.5%, V:1.64%, Ni:12.5%, B:0.016%, Mn:3.36%, compound rare-earth: 2.65%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:12.8%, Tb:1.3%, Pr:13.2%, Nd:14. 5%, Lu:3.1%, Sm:17.3%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
The aluminum alloy materials of aforesaid high-strength corrosion-resisting, the mass percent of described aluminum alloy materials chemical composition is: Sr:1.45%, Si:1.36%, Nb:2.28%, Cu:4.55%, Ti:3.27%, Mg:0.24%, C:0.02%, Cr:16.8%, V:2.24%, Ni:13.3%, B:0.018%, Mn:3.38%, compound rare-earth: 2.85%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:13.8%, Tb:1.5%, Pr:14.9%, Nd:15.5%, Lu:3.2%, Sm:17.3%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
A manufacture craft for the aluminum alloy materials of high-strength corrosion-resisting, this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 580 DEG C, and keep 35min, then furnace temperature rises to 655 DEG C, first put into compound rare-earth, insulation 35min, then rises to 715 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 15min, then put into Ni successively, B, Mn element, insulation 40min, then temperature is increased to 730 DEG C, omnidistance nitrogen blowing stirs, insulation 33min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 665 DEG C, the time remains on 6h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 655 DEG C, and pumpdown time is at 6h;
Step (3): carry out argon shield die casting at the temperature of 610 DEG C, after solidifying, temperature is remained on 332 DEG C, soaking time is 12h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 485 DEG C, insulation 25min, at the powdered graphite of its surface smear thickness at 0.12mm, then 410 DEG C are heated to, insulation 40min, then use water-cooled with the speed cool to room temperature of 11 DEG C/s, last clean surface, inspection size.
The manufacture craft of the aluminum alloy materials of aforesaid high-strength corrosion-resisting, this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 600 DEG C, and keep 33min, then furnace temperature rises to 660 DEG C, first put into compound rare-earth, insulation 32min, then rises to 720 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 12min, then put into Ni successively, B, Mn element, insulation 39min, then temperature is increased to 740 DEG C, omnidistance nitrogen blowing stirs, insulation 30min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 675 DEG C, the time remains on 5h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 660 DEG C, and pumpdown time is at 5.5h;
Step (3): carry out argon shield die casting at the temperature of 610 DEG C, after solidifying, temperature is remained on 333 DEG C, soaking time is 11h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 495 DEG C, insulation 23min, at the powdered graphite of its surface smear thickness at 0.13mm, then 413 DEG C are heated to, insulation 38min, then use water-cooled with the speed cool to room temperature of 13 DEG C/s, last clean surface, inspection size.
Further, the manufacture craft of the aluminum alloy materials of aforesaid high-strength corrosion-resisting, this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 620 DEG C, and keep 30min, then furnace temperature rises to 670 DEG C, first put into compound rare-earth, insulation 30min, then rises to 725 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 10min, then put into Ni successively, B, Mn element, insulation 38min, then temperature is increased to 750 DEG C, omnidistance nitrogen blowing stirs, insulation 28min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 685 DEG C, the time remains on 4h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 670 DEG C, and pumpdown time is at 5h;
Step (3): carry out argon shield die casting at the temperature of 615 DEG C, after solidifying, temperature is remained on 335 DEG C, soaking time is 10h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 515 DEG C, insulation 20min, at the powdered graphite of its surface smear thickness at 0.15mm, then 415 DEG C are heated to, insulation 36min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, last clean surface, inspection size.
The invention has the beneficial effects as follows: in the aluminum alloy materials of this high-strength corrosion-resisting, add Sr element, strontium is surface active element, strontium element carries out plastic working and the end product quality that Metamorphism treatment can improve alloy, improves material mechanical performance and plastic working; Improve product surface roughness, and primary silicon size of particles can be reduced, improve plastic deformation ability, add Ni and Cr element, chromium can significantly improve intensity, hardness and wear resistance, chromium can improve again oxidation-resistance and the erosion resistance of aluminium alloy, and nickel can improve the intensity of aluminium alloy, and keeps good plasticity and toughness.Nickel has higher corrosion resistance to soda acid, at high temperature has antirust and temperature capacity; Add Cu element, intensity and the antioxidant property of aluminium alloy can be increased, improve work-ing life; Add Mg element and can improve its welding property, increase its corrosion resistance and intensity; And add rare earth element, and can not only the effect of crystal grain thinning in heat treatment process, increase its structural strength, its corrosion resistance and frictional behaviour can also be improved, improve its work-ing life, reduce costs; This manufacture craft provided, by adding alloying element successively, can promote that alloying element combines closely, improve its intensity, play the effect of crystal grain thinning, increase its intensity, and corrosion resistance and the welding property of aluminium alloy can be improved, improve the quality of product, can cut down finished cost, shorten the process-cycle, and scribble Graphite Powder 99 last layer on its surface, improve its rub resistance ability, increase its work-ing life.
Embodiment
The present invention is described in further detail below:
embodiment 1
The present embodiment provides a kind of aluminum alloy materials of high-strength corrosion-resisting, and the mass percent of described aluminum alloy materials chemical composition is: Sr:1.23%, Si:1.34%, Nb:1.25%, Cu:4.52%, Ti:1.56%, Mg:0.22%, C:0.01%, Cr:16.1%, V:1.25%, Ni:12.1%, B:0.015%, Mn:3.35%, compound rare-earth: 2.51%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:12.5%, Tb:1.1%, Pr:11.8%, Nd:14.3%, Lu:2.8%, Sm:17.2%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
This embodiment still provides the manufacture craft of the aluminum alloy materials of high-strength corrosion-resisting, and this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 580 DEG C, and keep 35min, then furnace temperature rises to 655 DEG C, first put into compound rare-earth, insulation 35min, then rises to 715 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 15min, then put into Ni successively, B, Mn element, insulation 40min, then temperature is increased to 730 DEG C, omnidistance nitrogen blowing stirs, insulation 33min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 665 DEG C, the time remains on 6h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 655 DEG C, and pumpdown time is at 6h;
Step (3): carry out argon shield die casting at the temperature of 610 DEG C, after solidifying, temperature is remained on 332 DEG C, soaking time is 12h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 485 DEG C, insulation 25min, at the powdered graphite of its surface smear thickness at 0.12mm, then 410 DEG C are heated to, insulation 40min, then use water-cooled with the speed cool to room temperature of 11 DEG C/s, last clean surface, inspection size.
embodiment 2
The present embodiment provides a kind of aluminum alloy materials of high-strength corrosion-resisting, and the mass percent of described aluminum alloy materials chemical composition is: Sr:1.28%, Si:1.35%, Nb:1.58%, Cu:4.53%, Ti:2.27%, Mg:0.23%, C:0.01%, Cr:16.5%, V:1.64%, Ni:12.5%, B:0.016%, Mn:3.36%, compound rare-earth: 2.65%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:12.8%, Tb:1.3%, Pr:13.2%, Nd:14. 5%, Lu:3.1%, Sm:17.3%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
This embodiment still provides the manufacture craft of the aluminum alloy materials of high-strength corrosion-resisting, and this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 600 DEG C, and keep 33min, then furnace temperature rises to 660 DEG C, first put into compound rare-earth, insulation 32min, then rises to 720 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 12min, then put into Ni successively, B, Mn element, insulation 39min, then temperature is increased to 740 DEG C, omnidistance nitrogen blowing stirs, insulation 30min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 675 DEG C, the time remains on 5h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 660 DEG C, and pumpdown time is at 5.5h;
Step (3): carry out argon shield die casting at the temperature of 610 DEG C, after solidifying, temperature is remained on 333 DEG C, soaking time is 11h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 495 DEG C, insulation 23min, at the powdered graphite of its surface smear thickness at 0.13mm, then 413 DEG C are heated to, insulation 38min, then use water-cooled with the speed cool to room temperature of 13 DEG C/s, last clean surface, inspection size.
embodiment 3
The present embodiment provides a kind of aluminum alloy materials of high-strength corrosion-resisting, and the mass percent of described aluminum alloy materials chemical composition is: Sr:1.45%, Si:1.36%, Nb:2.28%, Cu:4.55%, Ti:3.27%, Mg:0.24%, C:0.02%, Cr:16.8%, V:2.24%, Ni:13.3%, B:0.018%, Mn:3.38%, compound rare-earth: 2.85%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:13.8%, Tb:1.5%, Pr:14.9%, Nd:15.5%, Lu:3.2%, Sm:17.3%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
This embodiment still provides the manufacture craft of the aluminum alloy materials of high-strength corrosion-resisting, and this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 620 DEG C, and keep 30min, then furnace temperature rises to 670 DEG C, first put into compound rare-earth, insulation 30min, then rises to 725 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 10min, then put into Ni successively, B, Mn element, insulation 38min, then temperature is increased to 750 DEG C, omnidistance nitrogen blowing stirs, insulation 28min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 685 DEG C, the time remains on 4h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 670 DEG C, and pumpdown time is at 5h;
Step (3): carry out argon shield die casting at the temperature of 615 DEG C, after solidifying, temperature is remained on 335 DEG C, soaking time is 10h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 515 DEG C, insulation 20min, at the powdered graphite of its surface smear thickness at 0.15mm, then 415 DEG C are heated to, insulation 36min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, last clean surface, inspection size.
Like this by the technical scheme of embodiment, propose a kind of aluminum alloy materials and manufacture craft thereof of high-strength corrosion-resisting, the aluminum alloy materials not only long service life of this high-strength corrosion-resisting, and intensity is high, security is good, also has very strong rub resistance and corrosion resistance nature; This manufacture craft provided, can not only cut down finished cost, and shortens the process-cycle, and can improve the corrosion resistance of aluminium alloy and welding property etc., improves the quality of product.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (8)
1. an aluminum alloy materials for high-strength corrosion-resisting, is characterized in that: the mass percent of described aluminum alloy materials chemical composition is: Sr:1.23-1.45%, Si:1.34-1.36%, Nb:1.25-2.28%, Cu:4.52-4.55%, Ti:1.56-3.27%, Mg:0.22-0.24%, C:0.01-0.02%, Cr:16.1-16.8%, V:1.25-2.24%, Ni:12.1-13.3%, B:0.015-0.018%, Mn:3.35-3.38%, compound rare-earth: 2.51-2.85%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:12.5-13.8%, Tb:1.1-1.5%, Pr:11.8-14.9%, Nd:14.3-15.5%, Lu:2.8-3.2%, Sm:17.2-17.3%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
2. the aluminum alloy materials of high-strength corrosion-resisting according to claim 1, is characterized in that: the mass percent of described aluminum alloy materials chemical composition is: Sr:1.23%, Si:1.34%, Nb:1.25%, Cu:4.52%, Ti:1.56%, Mg:0.22%, C:0.01%, Cr:16.1%, V:1.25%, Ni:12.1%, B:0.015%, Mn:3.35%, compound rare-earth: 2.51%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:12.5%, Tb:1.1%, Pr:11.8%, Nd:14.3%, Lu:2.8%, Sm:17.2%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
3. the aluminum alloy materials of high-strength corrosion-resisting according to claim 1, is characterized in that: the mass percent of described aluminum alloy materials chemical composition is: Sr:1.28%, Si:1.35%, Nb:1.58%, Cu:4.53%, Ti:2.27%, Mg:0.23%, C:0.01%, Cr:16.5%, V:1.64%, Ni:12.5%, B:0.016%, Mn:3.36%, compound rare-earth: 2.65%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:12.8%, Tb:1.3%, Pr:13.2%, Nd:14. 5%, Lu:3.1%, Sm:17.3%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
4. the aluminum alloy materials of high-strength corrosion-resisting according to claim 1, is characterized in that: the mass percent of described aluminum alloy materials chemical composition is: Sr:1.45%, Si:1.36%, Nb:2.28%, Cu:4.55%, Ti:3.27%, Mg:0.24%, C:0.02%, Cr:16.8%, V:2.24%, Ni:13.3%, B:0.018%, Mn:3.38%, compound rare-earth: 2.85%, all the other are Al and impurity;
In described compound rare-earth, comprise following component by weight percentage: Tm:13.8%, Tb:1.5%, Pr:14.9%, Nd:15.5%, Lu:3.2%, Sm:17.3%, surplus is Ho;
Total content≤0.1% of described impurity, wherein, P≤0.015%, S≤0.008%, H≤0.003%, N≤0.006%, O≤30ppm.
5. a manufacture craft for the aluminum alloy materials of high-strength corrosion-resisting, is characterized in that: this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 580-620 DEG C, and keep 30-35min, then furnace temperature rises to 655-670 DEG C, first put into compound rare-earth, insulation 30-35min, then rises to 715-725 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 10-15min, then put into Ni successively, B, Mn element, insulation 38-40min, then temperature is increased to 730-750 DEG C, omnidistance nitrogen blowing stirs, insulation 28-33min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 665-685 DEG C, the time remains on 4-6h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 655-670 DEG C, and pumpdown time is at 5-6h;
Step (3): carry out argon shield die casting at the temperature of 610-615 DEG C, after solidifying, temperature is remained on 332-335 DEG C, soaking time is 10-12h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 485-515 DEG C, insulation 20-25min, at the powdered graphite of its surface smear thickness at 0.12-0.15mm, then 410-415 DEG C is heated to, insulation 36-40min, then use water-cooled with the speed cool to room temperature of 11-15 DEG C/s, last clean surface, inspection size.
6. the manufacture craft of the aluminum alloy materials of high-strength corrosion-resisting according to claim 5, is characterized in that: this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 580 DEG C, and keep 35min, then furnace temperature rises to 655 DEG C, first put into compound rare-earth, insulation 35min, then rises to 715 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 15min, then put into Ni successively, B, Mn element, insulation 40min, then temperature is increased to 730 DEG C, omnidistance nitrogen blowing stirs, insulation 33min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 665 DEG C, the time remains on 6h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 655 DEG C, and pumpdown time is at 6h;
Step (3): carry out argon shield die casting at the temperature of 610 DEG C, after solidifying, temperature is remained on 332 DEG C, soaking time is 12h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 485 DEG C, insulation 25min, at the powdered graphite of its surface smear thickness at 0.12mm, then 410 DEG C are heated to, insulation 40min, then use water-cooled with the speed cool to room temperature of 11 DEG C/s, last clean surface, inspection size.
7. the manufacture craft of the aluminum alloy materials of high-strength corrosion-resisting according to claim 5, is characterized in that: this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 600 DEG C, and keep 33min, then furnace temperature rises to 660 DEG C, first put into compound rare-earth, insulation 32min, then rises to 720 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 12min, then put into Ni successively, B, Mn element, insulation 39min, then temperature is increased to 740 DEG C, omnidistance nitrogen blowing stirs, insulation 30min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 675 DEG C, the time remains on 5h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 660 DEG C, and pumpdown time is at 5.5h;
Step (3): carry out argon shield die casting at the temperature of 610 DEG C, after solidifying, temperature is remained on 333 DEG C, soaking time is 11h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 495 DEG C, insulation 23min, at the powdered graphite of its surface smear thickness at 0.13mm, then 413 DEG C are heated to, insulation 38min, then use water-cooled with the speed cool to room temperature of 13 DEG C/s, last clean surface, inspection size.
8. the manufacture craft of the aluminum alloy materials of high-strength corrosion-resisting according to claim 5, is characterized in that: this technique is carried out according to the following steps:
Step (1): first in proportion fine aluminium ingot is added in boiler and melt, temperature is at 620 DEG C, and keep 30min, then furnace temperature rises to 670 DEG C, first put into compound rare-earth, insulation 30min, then rises to 725 DEG C by temperature, then puts into Sr successively, C, Si, K, Cu, Mg, Cr element, insulation 10min, then put into Ni successively, B, Mn element, insulation 38min, then temperature is increased to 750 DEG C, omnidistance nitrogen blowing stirs, insulation 28min;
Step (2): again through the refining of LF stove, by Control for Kiln Temperature at 685 DEG C, the time remains on 4h, omnidistance blowing argon gas stirs, and make Chemical Composition reach component requirements, carry out degassed with vacuum degassing furnace, degassing temperature is 670 DEG C, and pumpdown time is at 5h;
Step (3): carry out argon shield die casting at the temperature of 615 DEG C, after solidifying, temperature is remained on 335 DEG C, soaking time is 10h, and last air cooling is to room temperature;
Step (4): the component forged are carried out first time thermal treatment: the parts forged are heated to 515 DEG C, insulation 20min, at the powdered graphite of its surface smear thickness at 0.15mm, then 415 DEG C are heated to, insulation 36min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, last clean surface, inspection size.
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