CN102876939B - Manufacturing method of aluminum magnesium alloy - Google Patents
Manufacturing method of aluminum magnesium alloy Download PDFInfo
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Abstract
The invention relates to a manufacturing method of plates and particularly relates to a manufacturing method of an aluminum magnesium alloy thick plate, which can be used for solving the problems that a process for processing a plate made of aluminum alloy 5083 which is in the H321 state and is 12.5-75mm in thickness, and the aluminum alloy 5083 being in the H321 state and being 12.5-75mm in thickness, which is prepared by the existing casting method, is poor in strength and percentage elongation. The method comprises the steps of firstly, melting; secondly, casting; thirdly, evening fire; fourthly, rolling and fifthly, annealing. According to the method disclosed by the invention, the blank of the manufacturing method of an alloy thick plate 5083H321 being 12.5-75mm in thickness is filled; and according to the method, a reasonable technological process is selected, so that the yield strength of the plate is 275-293MPa, the tensile strength of the plate is 350-365MPa, and the percentage elongation of the plate is 10.8-11.9%. The aluminum magnesium alloy thick plate manufactured by the method can be used for the industrial fields of armored vehicles, ships, automobile industries, and canning.
Description
Technical field
The present invention relates to a kind of manufacture method of sheet material.
Background technology
5083 aluminium alloys have medium tenacity, good solidity to corrosion, weldability and the characteristics such as are easy to shape, and are that Al-Mg is associated the exemplary alloy in gold, in a lot of fields, have important using value.5083 aluminum alloy plate materials of different heat treatment state are armored vehicle, boats and ships, automobile industry, tank-making industry main raw used.So far, most magnesium alloy products mainly obtain by castmethod or machining process, and mostly be the aluminum magnesium alloy thin plate, 5083 aluminium alloys that adopt existing castmethod to prepare the H321 state of thickness 12.5mm～75mm easily produce the problem that intensity is low and extend rate variance, the production technique that also there is no at present the production 5083 aluminium alloy H321 state thickness 12.5mm of shaping～75mm sheet material, can not satisfying the market to the demand of 5083H321 slab.
Summary of the invention
The present invention is the production technique that will solve the production 5083 aluminium alloy H321 state thickness 12.5mm that also there is no at present shaping～75mm sheet material, and existing castmethod prepares 5083 aluminium alloys of the H321 state of thickness 12.5mm～75mm and easily produces the problem that intensity is low and extend rate variance, and the manufacture method of a kind of aluminum magnesium alloy slab provided.
Specifically according to following steps, prepared by a kind of manufacture method of aluminum magnesium alloy slab:
One, melting: the massfraction by Si is 0.0001%～0.40%, the massfraction of Fe is 0.0001%～0.40%, the massfraction of Cu is 0.0001%～0.10%, the massfraction of Mn is 0.40%～1.0%, the massfraction of Mg is 4.0%～4.9%, the massfraction of Cr is 0.05%～0.25%, the massfraction of Ni is 0.0001%～0.01%, the massfraction of Zn is 0.0001%～0.25%, the massfraction of Ti is 0.0001%～0.15%, the massfraction of Zr is 0.0001%～0.01%, surplus is that Al takes pure magnesium ingot, aluminium-manganese master alloy, aluminium-titanium master alloy, aluminium-silicon master alloy, aluminium-iron master alloy, electrolytic copper, aluminium-nickel master alloy, aluminium-zinc master alloy and remelting are with aluminium ingot and join in dry smelting furnace, in temperature, be melting 3h～5h under 700 ℃～750 ℃ conditions, obtain molten aluminium alloy,
Two, casting: the molten aluminium alloy that step 1 is obtained is that 690 ℃～710 ℃, casting speed are that 3.3mm/min～3.6mm/min, water coolant intensity are to adopt the semicontinuous casting method to be cast as the aluminium alloy cast ingot that thickness is 255mm～520mm under 0.08MPa～0.15MPa, the temperature of cooling water condition that is 10 ℃～20 ℃ in temperature;
Three, all fiery: the aluminium alloy cast ingot that step 2 is obtained is put into heat treatment furnace, in temperature, is to be incubated 24h～25h under 460 ℃～475 ℃ conditions to carry out the homogenizing annealing processing, the aluminium alloy cast ingot after being processed;
Four, rolling: the aluminium alloy cast ingot after the processing that step 3 is obtained mills surperficial oxide skin, put into again resistance heading furnace and be heated to 470 ℃～500 ℃, insulation 6h～8h, put into again hot rolls, at pressure, be that 200T～1500T, temperature are to be rolled under 470 ℃～500 ℃ conditions, controlled rolling speed is 0.5m/min～3m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into to process furnace and be heated to 360 ℃～380 ℃, insulation 2h～3h carries out the process annealing processing, put into again hot rolls, at pressure, be that 500T～1200T, temperature are that under room temperature condition, the cold working rate by 25%～35% is rolled, controlled rolling speed is 0.5m/min～3.0m/min, and rolling obtains the sheet material that thickness is 12.5mm～75mm;
Five, annealing: the sheet material that step 4 is made is put into process furnace and is heated to 110 ℃～130 ℃, and insulation 1h～2h carries out the stabilizing annealing processing, then sheet material is placed to 5d～90d, obtains the aluminum magnesium alloy slab.
Single impurity in magnesium alloy thick plate prepared by the present invention is less than 0.05%, and all dirt is less than 0.15%, the performance not impact of the impurity in this scope on aluminum alloy plate materials.
The invention has the beneficial effects as follows: the inventive method has been determined the production method of aluminum magnesium alloy slab, the 5083H321 alloy plate preparation method's that to have filled up thickness be 12.5mm～75mm blank; The present invention selects rational technical process, produced that the plate face is smooth, thin and thick is even, surface smoothness is good, aluminum magnesium alloy slab goods, make the yield strength of sheet material arrive 275MPa～293MPa, tensile strength reaches 350MPa～365MPa, and unit elongation reaches 10.8%～11.9%.
Aluminum magnesium alloy slab prepared by the present invention is for armored vehicle, boats and ships, automobile industry, tank-making industry field.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: specifically prepared according to following steps by the manufacture method of a kind of aluminum magnesium alloy slab of present embodiment:
One, melting: the massfraction by Si is 0.0001%～0.40%, the massfraction of Fe is 0.0001%～0.40%, the massfraction of Cu is 0.0001%～0.10%, the massfraction of Mn is 0.40%～1.0%, the massfraction of Mg is 4.0%～4.9%, the massfraction of Cr is 0.05%～0.25%, the massfraction of Ni is 0.0001%～0.01%, the massfraction of Zn is 0.0001%～0.25%, the massfraction of Ti is 0.0001%～0.15%, the massfraction of Zr is 0.0001%～0.01%, surplus is that Al takes pure magnesium ingot, aluminium-manganese master alloy, aluminium-titanium master alloy, aluminium-silicon master alloy, aluminium-iron master alloy, electrolytic copper, aluminium-nickel master alloy, aluminium-zinc master alloy and remelting are with aluminium ingot and join in dry smelting furnace, in temperature, be melting 3h～5h under 700 ℃～750 ℃ conditions, obtain molten aluminium alloy,
Two, casting: the molten aluminium alloy that step 1 is obtained is that 690 ℃～710 ℃, casting speed are that 3.3mm/min～3.6mm/min, water coolant intensity are to adopt the semicontinuous casting method to be cast as the aluminium alloy cast ingot that thickness is 255mm～520mm under 0.08MPa～0.15MPa, the temperature of cooling water condition that is 10 ℃～20 ℃ in temperature;
Three, all fiery: the aluminium alloy cast ingot that step 2 is obtained is put into heat treatment furnace, in temperature, is to be incubated 24h～25h under 460 ℃～475 ℃ conditions to carry out the homogenizing annealing processing, the aluminium alloy cast ingot after being processed;
Four, rolling: the aluminium alloy cast ingot after the processing that step 3 is obtained mills surperficial oxide skin, put into again resistance heading furnace and be heated to 470 ℃～500 ℃, insulation 6h～8h, put into again hot rolls, at pressure, be that 200T～1500T, temperature are to be rolled under 470 ℃～500 ℃ conditions, controlled rolling speed is 0.5m/min～3m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into to process furnace and be heated to 360 ℃～380 ℃, insulation 2h～3h carries out the process annealing processing, put into again hot rolls, at pressure, be that 500T～1200T, temperature are that under room temperature condition, the cold working rate by 25%～35% is rolled, controlled rolling speed is 0.5m/min～3.0m/min, and rolling obtains the sheet material that thickness is 12.5mm～75mm;
Five, annealing: the sheet material that step 4 is made is put into process furnace and is heated to 110 ℃～130 ℃, and insulation 1h～2h carries out the stabilizing annealing processing, then sheet material is placed to 5d～90d, obtains the aluminum magnesium alloy slab.
Single impurity in magnesium alloy thick plate prepared by present embodiment is less than 0.05%, and all dirt is less than 0.15%, the performance not impact of the impurity in this scope on aluminum alloy plate materials.
Embodiment two: present embodiment is different from embodiment two: the massfraction by Si in step 1 is 0.02%～0.38%, the massfraction of Fe is 0.02%～0.38%, the massfraction of Cu is 0.02%～0.08%, the massfraction of Mn is 0.50%～0.90%, the massfraction of Mg is 4.2%～4.7%, the massfraction of Cr is 0.07%～0.23%, the massfraction of Ni is 0.0002%～0.009%, the massfraction of Zn is 0.02%～0.23%, the massfraction of Ti is 0.02%～0.13%, the massfraction of Zr is 0.0002%～0.009%, surplus is that Al takes pure magnesium ingot, aluminium-manganese master alloy, aluminium-titanium master alloy, aluminium-silicon master alloy, aluminium-iron master alloy, electrolytic copper, aluminium-nickel master alloy, aluminium-zinc master alloy and remelting aluminium ingot.Other is identical with embodiment one.
Embodiment three: present embodiment is different from embodiment one or two: in step 1, in temperature, be melting 3.5h～4.5h under 710 ℃～740 ℃ conditions.Other is identical with embodiment one or two.
Embodiment four: present embodiment is different from one of embodiment one to three: in step 2, molten aluminium alloy is that 700 ℃, casting speed are that 3.5mm/min, water coolant intensity are to adopt the semicontinuous casting method to be cast as the aluminium alloy cast ingot that thickness is 260mm～300mm under 0.09MPa～0.14MPa, the temperature of cooling water condition that is 12 ℃～18 ℃ in temperature.Other is identical with one of embodiment one to three.
Embodiment five: present embodiment is different from one of embodiment one to four: in step 3, in temperature, be to carry out the homogenizing annealing processing under 465 ℃～470 ℃ conditions.Other is identical with one of embodiment one to four.
Embodiment six: present embodiment is different from one of embodiment one to five: put into resistance heading furnace in step 4 and be heated to 480 ℃～490 ℃.Other is identical with one of embodiment one to five.
Embodiment seven: present embodiment is different from one of embodiment one to six: the cold working rate by 30% in step 4 is rolled.Other is identical with one of embodiment one to six.
Embodiment eight: present embodiment is different from one of embodiment one to seven: in step 4, rolling obtains the sheet material that thickness is 20mm～50mm.Other is identical with one of embodiment one to seven.
Embodiment nine: present embodiment is different from one of embodiment one to eight: in step 5, process furnace is heated to 120 ℃.Other is identical with one of embodiment one to eight.
Embodiment ten: present embodiment is different from one of embodiment one to nine: in step 5, sheet material is placed 10d～60d.Other is identical with one of embodiment one to nine.
Adopt following examples to verify beneficial effect of the present invention:
Embodiment mono-:
Specifically according to following steps, prepared by the manufacture method of a kind of aluminum magnesium alloy slab of the present embodiment:
One, melting: the massfraction by Si is 0.20%, the massfraction of Fe is 0.20%, the massfraction of Cu is 0.05%, the massfraction of Mn is 0.70%, the massfraction of Mg is 4.5%, the massfraction of Cr is 0.15%, the massfraction of Ni is 0.01%, the massfraction of Zn is 0.12%, the massfraction of Ti is 0.08%, the massfraction of Zr is 0.01%, surplus is that Al takes pure magnesium ingot, aluminium-manganese master alloy, aluminium-titanium master alloy, aluminium-silicon master alloy, aluminium-iron master alloy, electrolytic copper, aluminium-nickel master alloy, aluminium-zinc master alloy and remelting are with aluminium ingot and join in dry smelting furnace, in temperature, be melting 4h under 730 ℃ of conditions, obtain molten aluminium alloy,
Two, casting: the molten aluminium alloy that step 1 is obtained is that 700 ℃, casting speed are that 3.3mm/min, water coolant intensity are to adopt the semicontinuous casting method to be cast as the aluminium alloy cast ingot that thickness is 420 under 0.15MPa, the temperature of cooling water condition that is 15 ℃ in temperature;
Three, all fiery: the aluminium alloy cast ingot that step 2 is obtained is put into heat treatment furnace, in temperature, is that under 460 ℃ of conditions, insulation 24h carries out the homogenizing annealing processing, the aluminium alloy cast ingot after being processed;
Four, rolling: the aluminium alloy cast ingot after the processing that step 3 is obtained mills surperficial oxide skin, put into again resistance heading furnace and be heated to 470 ℃, insulation 6h～8h, put into again the 2000mm hot rolls, at pressure, be that 1000T, temperature are to be rolled under 490 ℃ of conditions, controlled rolling speed is 0.5m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into to process furnace and be heated to 360 ℃, insulation 2h carries out the process annealing processing, then puts into hot rolls, at pressure, is that 1000T, temperature are that under room temperature condition, the cold working rate by 25% is rolled, controlled rolling speed is 0.5m/min, and rolling obtains the sheet material that thickness is 12.5mm;
Five, annealing: the sheet material that step 4 is made is put into process furnace and is heated to 110 ℃, and insulation 2h carries out the stabilizing annealing processing, then sheet material is placed to 5d, obtains the aluminum magnesium alloy slab.
Aluminum magnesium alloy slab prepared by the present embodiment, the plate face is smooth, thin and thick is even, surface smoothness is good, and yield strength is 293MPa, and tensile strength is 365MPa, and unit elongation is 11.9%.
Claims (10)
1. the manufacture method of an aluminum magnesium alloy slab is characterized in that specifically prepared according to following steps by a kind of manufacture method of aluminum magnesium alloy slab:
One, melting: the massfraction by Si is 0.0001%～0.40%, the massfraction of Fe is 0.0001%～0.40%, the massfraction of Cu is 0.0001%～0.10%, the massfraction of Mn is 0.40%～1.0%, the massfraction of Mg is 4.0%～4.9%, the massfraction of Cr is 0.05%～0.25%, the massfraction of Ni is 0.0001%～0.01%, the massfraction of Zn is 0.0001%～0.25%, the massfraction of Ti is 0.0001%～0.15%, the massfraction of Zr is 0.0001%～0.01%, surplus is that Al takes pure magnesium ingot, aluminium-manganese master alloy, aluminium-titanium master alloy, aluminium-silicon master alloy, aluminium-iron master alloy, electrolytic copper, aluminium-nickel master alloy, aluminium-zinc master alloy and remelting are with aluminium ingot and join in dry smelting furnace, in temperature, be melting 3h～5h under 700 ℃～750 ℃ conditions, obtain molten aluminium alloy,
Two, casting: the molten aluminium alloy that step 1 is obtained is that 690 ℃～710 ℃, casting speed are that 3.3mm/min～3.6mm/min, water coolant intensity are to adopt the semicontinuous casting method to be cast as the aluminium alloy cast ingot that thickness is 255mm～520mm under 0.08MPa～0.15MPa, the temperature of cooling water condition that is 10 ℃～20 ℃ in temperature;
Three, all fiery: the aluminium alloy cast ingot that step 2 is obtained is put into heat treatment furnace, in temperature, is to be incubated 24h～25h under 460 ℃～475 ℃ conditions to carry out the homogenizing annealing processing, the aluminium alloy cast ingot after being processed;
Four, rolling: the aluminium alloy cast ingot after the processing that step 3 is obtained mills surperficial oxide skin, put into again resistance heading furnace and be heated to 470 ℃～500 ℃, insulation 6h～8h, put into again hot rolls, at pressure, be that 200T～1500T, temperature are to be rolled under 470 ℃～500 ℃ conditions, controlled rolling speed is 0.5m/min～3m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into to process furnace and be heated to 360 ℃～380 ℃, insulation 2h～3h carries out the process annealing processing, put into again hot rolls, at pressure, be that 500T～1200T, temperature are that under room temperature condition, the cold working rate by 25%～35% is rolled, controlled rolling speed is 0.5m/min～3.0m/min, and rolling obtains the sheet material that thickness is 12.5mm～75mm;
Five, annealing: the sheet material that step 4 is made is put into process furnace and is heated to 110 ℃～130 ℃, and insulation 1h～2h carries out the stabilizing annealing processing, then sheet material is placed to 5d～90d, obtains the aluminum magnesium alloy slab.
2. a kind of manufacture method of aluminum magnesium alloy slab according to claim 1, it is characterized in that in step 1, the massfraction by Si is 0.02%～0.38%, the massfraction of Fe is 0.02%～0.38%, the massfraction of Cu is 0.02%～0.08%, the massfraction of Mn is 0.50%～0.90%, the massfraction of Mg is 4.2%～4.7%, the massfraction of Cr is 0.07%～0.23%, the massfraction of Ni is 0.0002%～0.009%, the massfraction of Zn is 0.02%～0.23%, the massfraction of Ti is 0.02%～0.13%, the massfraction of Zr is 0.0002%～0.009%, surplus is that Al takes pure magnesium ingot, aluminium-manganese master alloy, aluminium-titanium master alloy, aluminium-silicon master alloy, aluminium-iron master alloy, electrolytic copper, aluminium-nickel master alloy, aluminium-zinc master alloy and remelting aluminium ingot.
3. a kind of manufacture method of aluminum magnesium alloy slab according to claim 2, is characterized in that in step 1 being melting 3.5h～4.5h under 710 ℃～740 ℃ conditions in temperature.
4. a kind of manufacture method of aluminum magnesium alloy slab according to claim 3, is characterized in that molten aluminium alloy in step 2 is that 700 ℃, casting speed are that 3.5mm/min, water coolant intensity are to adopt the semicontinuous casting method to be cast as the aluminium alloy cast ingot that thickness is 260mm～300mm under 0.09MPa～0.14MPa, the temperature of cooling water condition that is 12 ℃～18 ℃ in temperature.
5. a kind of manufacture method of aluminum magnesium alloy slab according to claim 4, is characterized in that in step 3 being to carry out the homogenizing annealing processing under 465 ℃～470 ℃ conditions in temperature.
6. a kind of manufacture method of aluminum magnesium alloy slab according to claim 5, is characterized in that in step 4 putting into resistance heading furnace and be heated to 480 ℃～490 ℃.
7. a kind of manufacture method of aluminum magnesium alloy slab according to claim 6, is characterized in that in step 4, the cold working rate by 30% is rolled.
8. a kind of manufacture method of aluminum magnesium alloy slab according to claim 7, is characterized in that in step 4, rolling obtains the sheet material that thickness is 20mm～50mm.
9. a kind of manufacture method of aluminum magnesium alloy slab according to claim 8, is characterized in that in step 5, process furnace is heated to 120 ℃.
10. a kind of manufacture method of aluminum magnesium alloy slab according to claim 9, is characterized in that in step 5, sheet material is placed 10d～60d.
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| JP2823797B2 (en) * | 1994-02-16 | 1998-11-11 | 住友軽金属工業株式会社 | Manufacturing method of aluminum alloy sheet for forming |
| JP3676933B2 (en) * | 1998-12-01 | 2005-07-27 | 株式会社神戸製鋼所 | Al-Mg-Si Al alloy plate for press forming |
| CN100441716C (en) * | 2005-03-07 | 2008-12-10 | 东北轻合金有限责任公司 | Strength controllable and high tensile aluminium alloy thin plate and its prodn. method |
| CN100378237C (en) * | 2006-04-25 | 2008-04-02 | 东北轻合金有限责任公司 | Method of preparing aviation alloyed aluminium variable section sheets |
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