CN109055788A - A kind of preparation process eliminating 5 line aluminium alloy plate surface bands - Google Patents
A kind of preparation process eliminating 5 line aluminium alloy plate surface bands Download PDFInfo
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- CN109055788A CN109055788A CN201811085708.6A CN201811085708A CN109055788A CN 109055788 A CN109055788 A CN 109055788A CN 201811085708 A CN201811085708 A CN 201811085708A CN 109055788 A CN109055788 A CN 109055788A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 111
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 238000000137 annealing Methods 0.000 claims abstract description 75
- 238000005097 cold rolling Methods 0.000 claims abstract description 73
- 238000005098 hot rolling Methods 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 8
- 238000001953 recrystallisation Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 33
- 238000007670 refining Methods 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- 238000002791 soaking Methods 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 14
- 238000003723 Smelting Methods 0.000 claims description 13
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 239000006025 fining agent Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
- -1 aluminium titanium boron Chemical group 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 238000007872 degassing Methods 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 230000008030 elimination Effects 0.000 claims description 6
- 238000003379 elimination reaction Methods 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 12
- 239000004411 aluminium Substances 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000006260 foam Substances 0.000 description 5
- 229910052573 porcelain Inorganic materials 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- 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
-
- 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
- C22F1/047—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 with magnesium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/001—Aluminium or its alloys
Abstract
The invention belongs to technical field of aluminum alloy technology, it is related to a kind of preparation process for eliminating 5 line aluminium alloy plate surface bands, aluminium alloy cast ingot after founding is come out of the stove rolling after 500 ± 5 DEG C of 3~5h of heat preservation, controlling hot rolling finishing temperature is 325 ± 10 DEG C, hot rolling blank between cold rolling finished product reserve 10~50% deflections, it is greater than 50% product for hot rolling blank to deflection between cold rolling finished product, an intermediate annealing need to be carried out in material cold-rolled process, after plate carries out intermediate annealing, reserved 10~50% deflection, finished product after cold rolling carries out recrystallization annealing, annealing temperature is 300~350 DEG C, annealing time is 2~5h, it finally carries out horizontal cutting cutting and obtaining aluminum alloy plate materials, this process eliminates the bands that 5 line aluminium alloy O state thin sheet surfaces occur, it is effectively improved the surface of plate Quality.
Description
Technical field
The invention belongs to technical field of aluminum alloy technology, are related to a kind of preparation process for eliminating 5 line aluminium alloy plate surface bands.
Background technique
With social development and scientific and technological progress, aluminium and aluminium alloy secondary industry and technology are developed rapidly, 5XXX aluminium
Alloy has good plasticity and corrosion resistance since its density is small, and is widely used in the fields such as automobile, ship and building.
The application of some specific areas is even more high to the surface quality requirements of alloy, sometimes horizontal after the annealing of cold rolling O state to cut cutting
Aluminium alloy sheet will appear surface cross lines, decline the surface smoothness of material, next difficult to process bands such as spray paintings, to influence
The subsequent processing of alloy and use.Therefore, under the premise of guaranteeing material property, plate surface quality is promoted, especially effectively
Aluminium alloy sheet surface cross lines are controlled, and then improve the economic benefit of aluminum alloy materials, become the key of entire rolling line
Technology.
In the preparation process disclosed in this invention for eliminating 5 line aluminium alloy plate surface bands, after aluminum alloy plate materials cold rolling
After carrying out the annealing of O state, small working modulus keeps surface texture different from interior tissue, and two parts group, which is woven in deformation process, deforms difference
Step, to achieve the purpose that eliminate band.
Summary of the invention
In view of this, the present invention is easy to appear band, shadow to solve 5 line aluminium alloy thin sheet surfaces of prior art preparation
The problem of castanets material surface quality, provides a kind of preparation process for eliminating 5 line aluminium alloy plate surface bands.
In order to achieve the above objectives, the present invention provides a kind of preparation process for eliminating 5 line aluminium alloy plate surface bands, including
Following steps:
A, prepared aluminium alloy stock is added in smelting furnace melting after evenly mixing is liquid aluminium alloy, melting temperature
Degree is 740~750 DEG C, and the liquid aluminium alloy stirring after melting is skimmed；
B, the liquid aluminium alloy after step A stirring being skimmed pours into 15~20min of refining, refining temperature in refining furnace
730 ± 5 DEG C, the liquid aluminium alloy stirring after refining is skimmed, is stirred after skimming in 720 ± 5 DEG C of 20~30min of standing, to essence
It is passed through inert gas and stirring melt in furnace melt, removes the foreign gas in melt using inert gas, then uses hole
Diameter >=50ppi foamed ceramic filter plate filters the melt after degasification, and control melt temperature is 720 ± 5 DEG C when filtering, reuses
Fining agent carries out online refinement, by melt founding at aluminium alloy cast ingot；
C, the aluminium alloy cast ingot after step B founding is come out of the stove rolling after 500 ± 5 DEG C of 3~5h of heat preservation, controls hot rolling finish to gauge
Temperature is 325 ± 10 DEG C, and hot rolling blank arrives reserved 10~50% deflections between cold rolling finished product, for hot rolling blank to being cold rolled to
Deflection is greater than 50% product between product, and an intermediate annealing need to be carried out in material cold-rolled process, and plate carries out intermediate move back
After fire, 10~50% deflection is reserved, the finished product after cold rolling carries out recrystallization annealing, and annealing temperature is 300~350 DEG C, moves back
The fiery time is 2~5h, and progress is horizontal to cut cutting, obtains 5 line aluminium alloy plates.
Further, aluminium alloy stock is prepared according to following weight fraction ratio in step A: Si 0.13~0.15%, Fe
0.20~0.30%, Cu≤0.015%, Mn 0.22~0.28%, Mg 2.50~3.00%, Cr≤0.01%, Zn≤
0.01%, Ti≤0.02%, remaining single impurity≤0.05%, impurity total≤0.15%, surplus Al.
Further, inert gas is high-purity argon gas in step B, and fining agent is aluminium titanium boron wire fining agent.
Further, sotck thinkness is 3~6mm after step C hot rolling, sotck thinkness is down to 3mm after cold rolling, wherein material
Final cold rolling deflection is 10~50%, is annealed to the blank after cold rolling, and annealing temperature is 340 DEG C, when keeping the temperature after annealing
Between be 2h.
Further, sotck thinkness is 4.5~10mm after step C hot rolling, and sotck thinkness is down to 2mm after cold rolling, wherein
An intermediate annealing is carried out during material cold rolling, it is 10~50% that cold rolling reduction is reserved after intermediate annealing, after cold rolling
Blank anneal, annealing temperature be 340 DEG C, after annealing soaking time be 2h.
Further, sotck thinkness is 6mm after step C hot rolling, by blank thickness after 4.5mm-3.69mm-3mm three times cold rolling
Degree is down to 3mm, and material final cold rolling deflection is 50%, is annealed to the blank after cold rolling, and annealing temperature is 340 DEG C, moves back
Soaking time is 2h after fire.
Further, sotck thinkness is 3.5mm after step C hot rolling, and sotck thinkness is down to 3mm, material after once cold rolling
Final cold rolling deflection is 14.3%, is annealed to the blank after cold rolling, and annealing temperature is 340 DEG C, soaking time after annealing
For 2h.
Further, sotck thinkness is that 4.5mm is moved back through 3.3mm-2.4mm- intermediate annealing -2mm through centre after step C hot rolling
Sotck thinkness is down to 2mm after fire, cold rolling reduction 16.7% anneals to the blank after cold rolling, annealing temperature 340
DEG C, soaking time is 2h after annealing.
Further, sotck thinkness is 10mm after step C hot rolling, through 7.5mm-5.2mm-3.9mm intermediate annealing -3mm-2mm,
Sotck thinkness is down to 2mm after intermediate annealing, cold rolling reduction 48.7% anneals to the blank after cold rolling, annealing
Temperature is 340 DEG C, and soaking time is 2h after annealing.
The beneficial effects of the present invention are:
1, the preparation process disclosed in this invention for eliminating 5 line aluminium alloy plate surface bands, so that the 5 of preparation be that aluminium closes
Golden plate material promotes plate surface quality, effectively controls aluminium alloy sheet surface cross lines under the premise of guaranteeing material property.It will be hot
Aluminum alloy plate materials after rolling carry out cold rolling, and the final cold rolling deformation amount controlling of aluminum alloy plate materials is 10~50% after cold rolling, to cold
The aluminium alloy that rolls carries out the annealing of O state, by it is horizontal cut cutting after, the band of aluminum alloy sheet material surface is eliminated, is reached and is promoted aluminium and close
The purpose of golden plate material surface quality, so that the comprehensive performance of material is more excellent, application prospect can be more wide.
2, the preparation process disclosed in this invention for eliminating 5 line aluminium alloy plate surface bands, this preparation process are hot rolling
Blank between cold rolling finished product reserve 10~50% deflections；50% is greater than for hot rolling blank to deflection between cold rolling finished product
Product, need to carry out an intermediate annealing before finished products, after carrying out intermediate annealing, reserve 10~50% deflection.It is cold
After rolling carry out finished product recrystallization annealing, then carry out it is horizontal cut cutting, obtain 5 line aluminium alloy plates, by the change of technique so that
The 5 line aluminium alloy O state thin sheet surface bands finally prepared are eliminated, and plate surface quality is more preferably.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is the unstriped 5 line aluminium alloy plate pattern schematic diagram in surface that the embodiment of the present invention 1 obtains；
Fig. 2 is the 5 line aluminium alloy plate pattern schematic diagrames that there is band on the surface that comparative example 1 of the present invention obtains.
Specific embodiment
Below by a preferred embodiment of the present invention will be described in detail.
Embodiment 1
A kind of preparation process of 5 line aluminium alloy plate surface bands of elimination includes the following steps: by taking finished product 3mm as an example
A, aluminium alloy stock: Si 0.141%, Fe 0.27%, Cu 0.011%, Mn is prepared according to following weight fraction ratio
0.236%, Mg 2.911%, Cr 0.091%, Zn 0.007%, Ti 0.016%, remaining single impurity≤0.05%, impurity
Total≤0.15%, surplus Al, it is liquid aluminium that prepared aluminium alloy stock, which is added in smelting furnace melting after evenly mixing,
Alloy, smelting temperature are 745 DEG C, and the liquid aluminium alloy stirring after melting is skimmed；
B, the liquid aluminium alloy after step A stirring being skimmed, which pours into refining furnace, refines 15min, and refining temperature is 730 DEG C,
Liquid aluminium alloy stirring after refining is skimmed, stirs after skimming in 720 DEG C of standing 20min, is passed through height into refining furnace melt
Pure argon and stirring melt are removed the foreign gas in melt using high-purity argon gas, are then made pottery using aperture >=50ppi foam
Melt after porcelain filter plate degasification, control melt temperature is 720 DEG C when filtering, reuses aluminium titanium boron wire fining agent and exist
Line thinning, by melt founding at aluminium alloy cast ingot；
C, the aluminium alloy cast ingot after step B founding is come out of the stove rolling after 500 DEG C of heat preservation 4h, control hot rolling finishing temperature is
325 ± 10 DEG C, sotck thinkness is 6mm after hot rolling, and sotck thinkness is down to 3mm after 4.5mm, 3.69mm and 3mm three times cold rolling,
Material final cold rolling deflection is 50%, is annealed to the blank after cold rolling, and annealing temperature is 340 DEG C, when keeping the temperature after annealing
Between be 2h, carry out it is horizontal cuts cutting, obtain 5 line aluminium alloy plates as shown in Figure 1.
Embodiment 2
A kind of preparation process of 5 line aluminium alloy plate surface bands of elimination includes the following steps: by taking finished product 3mm as an example
A, aluminium alloy stock: Si 0.141%, Fe 0.27%, Cu 0.011%, Mn is prepared according to following weight fraction ratio
0.236%, Mg 2.911%, Cr 0.091%, Zn 0.007%, Ti 0.016%, remaining single impurity≤0.05%, impurity
Total≤0.15%, surplus Al, it is liquid aluminium that prepared aluminium alloy stock, which is added in smelting furnace melting after evenly mixing,
Alloy, smelting temperature are 745 DEG C, and the liquid aluminium alloy stirring after melting is skimmed；
B, the liquid aluminium alloy after step A stirring being skimmed, which pours into refining furnace, refines 15min, and refining temperature is 730 DEG C,
Liquid aluminium alloy stirring after refining is skimmed, stirs after skimming in 720 DEG C of standing 20min, is passed through height into refining furnace melt
Pure argon and stirring melt are removed the foreign gas in melt using high-purity argon gas, are then made pottery using aperture >=50ppi foam
Melt after porcelain filter plate degasification, control melt temperature is 720 DEG C when filtering, reuses aluminium titanium boron wire fining agent and exist
Line thinning, by melt founding at aluminium alloy cast ingot；
C, the aluminium alloy cast ingot after step B founding is come out of the stove rolling after 500 DEG C of heat preservation 4h, control hot rolling finishing temperature is
325 ± 10 DEG C, sotck thinkness is 3.5mm after hot rolling, and sotck thinkness is down to 3mm after once cold rolling, and material final cold rolling becomes
Shape amount is 14.3%, is annealed to the blank after cold rolling, and annealing temperature is 340 DEG C, and soaking time is 2h after annealing, is carried out horizontal
Cutting is cut, 5 line aluminium alloy plates are obtained.
Embodiment 3
A kind of preparation process of 5 line aluminium alloy plate surface bands of elimination includes the following steps: by taking finished product 2mm as an example
A, aluminium alloy stock: Si 0.141%, Fe 0.27%, Cu 0.011%, Mn is prepared according to following weight fraction ratio
0.236%, Mg 2.911%, Cr 0.091%, Zn 0.007%, Ti 0.016%, remaining single impurity≤0.05%, impurity
Total≤0.15%, surplus Al, it is liquid aluminium that prepared aluminium alloy stock, which is added in smelting furnace melting after evenly mixing,
Alloy, smelting temperature are 745 DEG C, and the liquid aluminium alloy stirring after melting is skimmed；
B, the liquid aluminium alloy after step A stirring being skimmed, which pours into refining furnace, refines 15min, and refining temperature is 730 DEG C,
Liquid aluminium alloy stirring after refining is skimmed, stirs after skimming in 720 DEG C of standing 20min, is passed through height into refining furnace melt
Pure argon and stirring melt are removed the foreign gas in melt using high-purity argon gas, are then made pottery using aperture >=50ppi foam
Melt after porcelain filter plate degasification, control melt temperature is 720 DEG C when filtering, reuses aluminium titanium boron wire fining agent and exist
Line thinning, by melt founding at aluminium alloy cast ingot；
C, the aluminium alloy cast ingot after step B founding is come out of the stove rolling after 500 DEG C of heat preservation 4h, control hot rolling finishing temperature is
325 ± 10 DEG C, sotck thinkness is 4.5mm after hot rolling, through 3.2mm-2.3mm- intermediate annealing -2mm, by blank after intermediate annealing
Thickness is down to 2mm, and cold rolling reduction 13% anneals to the blank after cold rolling, and annealing temperature is 340 DEG C, protects after annealing
The warm time is 2h, and progress is horizontal to cut cutting, obtains 5 line aluminium alloy plates.
Embodiment 4
A kind of preparation process of 5 line aluminium alloy plate surface bands of elimination includes the following steps: by taking finished product 2mm as an example
A, aluminium alloy stock: Si 0.141%, Fe 0.27%, Cu 0.011%, Mn is prepared according to following weight fraction ratio
0.236%, Mg 2.911%, Cr 0.091%, Zn 0.007%, Ti 0.016%, remaining single impurity≤0.05%, impurity
Total≤0.15%, surplus Al, it is liquid aluminium that prepared aluminium alloy stock, which is added in smelting furnace melting after evenly mixing,
Alloy, smelting temperature are 745 DEG C, and the liquid aluminium alloy stirring after melting is skimmed；
B, the liquid aluminium alloy after step A stirring being skimmed, which pours into refining furnace, refines 15min, and refining temperature is 730 DEG C,
Liquid aluminium alloy stirring after refining is skimmed, stirs after skimming in 720 DEG C of standing 20min, is passed through height into refining furnace melt
Pure argon and stirring melt are removed the foreign gas in melt using high-purity argon gas, are then made pottery using aperture >=50ppi foam
Melt after porcelain filter plate degasification, control melt temperature is 720 DEG C when filtering, reuses aluminium titanium boron wire fining agent and exist
Line thinning, by melt founding at aluminium alloy cast ingot；
C, the aluminium alloy cast ingot after step B founding is come out of the stove rolling after 500 DEG C of heat preservation 4h, control hot rolling finishing temperature is
325 ± 10 DEG C, sotck thinkness is 10mm after hot rolling, through 7.5mm-5.2mm-3.9mm intermediate annealing -3mm-2mm, through intermediate annealing
Sotck thinkness is down to 2mm afterwards, cold rolling reduction 48.7% anneals to the blank after cold rolling, annealing temperature 340
DEG C, soaking time is 2h after annealing, and progress is horizontal to cut cutting, obtains 5 line aluminium alloy plates.
Comparative example 1
A kind of preparation process of 5 line aluminium alloy plate, includes the following steps:
A, aluminium alloy stock: Si 0.141%, Fe 0.27%, Cu 0.011%, Mn is prepared according to following weight fraction ratio
0.236%, Mg 2.911%, Cr 0.091%, Zn 0.007%, Ti 0.016%, remaining single impurity≤0.05%, impurity
Total≤0.15%, surplus Al, it is liquid aluminium that prepared aluminium alloy stock, which is added in smelting furnace melting after evenly mixing,
Alloy, smelting temperature are 745 DEG C, and the liquid aluminium alloy stirring after melting is skimmed；
B, the liquid aluminium alloy after step A stirring being skimmed, which pours into refining furnace, refines 15min, and refining temperature is 730 DEG C,
Liquid aluminium alloy stirring after refining is skimmed, stirs after skimming in 720 DEG C of standing 20min, is passed through height into refining furnace melt
Pure argon and stirring melt are removed the foreign gas in melt using high-purity argon gas, are then made pottery using aperture >=50ppi foam
Melt after porcelain filter plate degasification, control melt temperature is 720 DEG C when filtering, reuses aluminium titanium boron wire fining agent and exist
Line thinning, by melt founding at aluminium alloy cast ingot；
C, the aluminium alloy cast ingot after step B founding is come out of the stove rolling after 500 DEG C of heat preservation 4h, control hot rolling finishing temperature is
325 ± 10 DEG C, sotck thinkness is 7mm after step C hot rolling, and sotck thinkness is down to 3mm, material final cold rolling after once cold rolling
Deflection is 57.1%, is annealed to the blank after cold rolling, and annealing temperature is 340 DEG C, and soaking time is 2h after annealing, is carried out
It is horizontal to cut cutting, obtain 5 line aluminium alloy plates as shown in Figure 2.
Comparative example 2
Comparative example 2 and the difference of comparative example 1 are, are 6.6mm to sotck thinkness after hot rolling, by blank after once cold rolling
Thickness is down to 1.5mm, and material final cold rolling deflection is 77.2%, anneals to the blank after cold rolling, annealing temperature 340
DEG C, soaking time is 2h after annealing, and progress is horizontal to cut cutting, obtains 5 line aluminium alloy plates.
Comparative example 3
Comparative example 3 and the difference of comparative example 1 be, is 4.5mm to sotck thinkness after hot rolling, through 3.2mm-2.3mm-2mm,
Sotck thinkness is down to 2mm through cold rolling three times, cold rolling reduction 55% anneals to the blank after cold rolling, annealing temperature
It is 340 DEG C, soaking time is 2h after annealing, and progress is horizontal to cut cutting, obtains 5 line aluminium alloy plates.
Comparative example 4
Comparative example 4 the difference from embodiment 1 is that, after hot rolling sotck thinkness be 10mm, through 7.5mm-5.2mm-3.9mm-
3mm-2mm, is down to 2mm for sotck thinkness after intermediate annealing, and cold rolling reduction 80% moves back the blank after cold rolling
Fire, annealing temperature are 340 DEG C, and soaking time is 2h after annealing, and progress is horizontal to cut cutting, obtain 5 line aluminium alloy plates.
Examples 1 to 4 and the obtained 5 line aluminium alloy plate surface band of comparative example 1~4 are as shown in the table:
It can see by upper table, it is 10%~50% that Examples 1 to 4, which controls final cold rolling deflection, is become to the cold rolling
5 line aluminium alloy blanks after shape carry out the annealing of O state, horizontal to cut cutting, can obtain the unstriped aluminum alloy plate materials in surface, comparative example
1~4 do not control final cold rolling deflection be 10%~50%, aluminum alloy sheet material surface has band.It can thus be seen that this hair
The preparation process of bright disclosed 5 line aluminium alloy plate surface band of elimination may insure aluminum alloy sheet material surface unstriated, mention
The surface quality of lift slab material improves the economic benefit of aluminium plate.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (9)
1. a kind of preparation process for eliminating 5 line aluminium alloy plate surface bands, which comprises the steps of:
A, prepared aluminium alloy stock is added in smelting furnace melting after evenly mixing is liquid aluminium alloy, and smelting temperature is
740~750 DEG C, the liquid aluminium alloy stirring after melting is skimmed；
B, the liquid aluminium alloy after step A stirring being skimmed pours into 15~20min of refining in refining furnace, and refining temperature is 730 ± 5
DEG C, the liquid aluminium alloy stirring after refining is skimmed, is stirred in 720 ± 5 DEG C of 20~30min of standing after skimming, it is molten to refining furnace
Be passed through inert gas and stirring melt in body, remove the foreign gas in melt using inert gas, then using aperture >=
Melt after the foamed ceramic filter plate filtering degasification of 50ppi, control melt temperature is 720 ± 5 DEG C when filtering, reuses refinement
Agent carries out online refinement, by melt founding at aluminium alloy cast ingot；
C, the aluminium alloy cast ingot after step B founding is come out of the stove rolling after 500 ± 5 DEG C of 3~5h of heat preservation, controls hot rolling finishing temperature
Be 325 ± 10 DEG C, hot rolling blank between cold rolling finished product reserve 10~50% deflections, for hot rolling blank to cold rolling finished product it
Between deflection be greater than 50% product, need to carry out intermediate annealing in material cold-rolled process, after plate progress intermediate annealing,
Reserved 10~50% deflection, the finished product after cold rolling carry out recrystallization annealing, and annealing temperature is 300~350 DEG C, annealing time
For 2~5h, progress is horizontal to cut cutting, obtains 5 line aluminium alloy plates.
2. eliminating the preparation process of 5 line aluminium alloy plate surface bands as described in claim 1, which is characterized in that in step A
Aluminium alloy stock is prepared according to following weight fraction ratio: Si 0.13~0.15%, Fe 0.20~0.30%, Cu≤0.015%,
Mn 0.22~0.28%, Mg 2.50~3.00%, Cr≤0.01%, Zn≤0.01%, Ti≤0.02%, remaining single impurity
≤ 0.05%, impurity total≤0.15%, surplus Al.
3. eliminating the preparation process of 5 line aluminium alloy plate surface bands as described in claim 1, which is characterized in that in step B
Inert gas is high-purity argon gas, and fining agent is aluminium titanium boron wire fining agent.
4. eliminating the preparation process of 5 line aluminium alloy plate surface bands as described in claim 1, which is characterized in that step C heat
Roll rear sotck thinkness be 3~6mm, sotck thinkness is down to 3mm after cold rolling, wherein material final cold rolling deflection be 10~
50%, it anneals to the blank after cold rolling, annealing temperature is 340 DEG C, and soaking time is 2h after annealing.
5. eliminating the preparation process of 5 line aluminium alloy plate surface bands as described in claim 1, which is characterized in that step C heat
Rolling rear sotck thinkness is 4.5~10mm, and sotck thinkness is down to 2mm after cold rolling, wherein carries out one during material cold rolling
Secondary intermediate annealing, it is 10~50% that cold rolling reduction is reserved after intermediate annealing, is annealed to the blank after cold rolling, annealing temperature
It is 340 DEG C, soaking time is 2h after annealing.
6. eliminating the preparation process of 5 line aluminium alloy plate surface bands as claimed in claim 4, which is characterized in that step C heat
Rolling rear sotck thinkness is 6mm, and sotck thinkness is down to 3mm, material final cold rolling after 4.5mm-3.69mm-3mm three times cold rolling
Deflection is 50%, is annealed to the blank after cold rolling, and annealing temperature is 340 DEG C, and soaking time is 2h after annealing.
7. eliminating the preparation process of 5 line aluminium alloy plate surface bands as claimed in claim 4, which is characterized in that step C heat
Rolling rear sotck thinkness is 3.5mm, and sotck thinkness is down to 3mm after once cold rolling, and material final cold rolling deflection is 14.3%,
It anneals to the blank after cold rolling, annealing temperature is 340 DEG C, and soaking time is 2h after annealing.
8. eliminating the preparation process of 5 line aluminium alloy plate surface bands as claimed in claim 5, which is characterized in that step C heat
It rolls rear sotck thinkness and sotck thinkness is down to 2mm after intermediate annealing through 3.3mm-2.4mm- intermediate annealing -2mm for 4.5mm,
Cold rolling reduction is 16.7%, is annealed to the blank after cold rolling, and annealing temperature is 340 DEG C, and soaking time is 2h after annealing.
9. such as the preparation process for the 5 line aluminium alloy plate surface band of elimination that claim 5 is stated, which is characterized in that step C hot rolling
Sotck thinkness is that 10mm drops sotck thinkness after intermediate annealing through 7.5mm-5.2mm-3.9mm intermediate annealing -3mm-2mm afterwards
To 2mm, cold rolling reduction 48.7% anneals to the blank after cold rolling, and annealing temperature is 340 DEG C, when keeping the temperature after annealing
Between be 2h.
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| CN112122882A (en) * | 2019-06-25 | 2020-12-25 | 西南铝业（集团）有限责任公司 | Production process of pure aluminum alloy O-state plate |
| CN112342356A (en) * | 2020-10-19 | 2021-02-09 | 西南铝业（集团）有限责任公司 | Production process for 2000-series aluminum alloy annealing copper diffusion |
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