CN109082615A - A kind of stabilizing treatment technique of 5052 aluminium alloy - Google Patents
A kind of stabilizing treatment technique of 5052 aluminium alloy Download PDFInfo
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Abstract
The invention belongs to aluminium alloy manufacturing technology fields, it is related to a kind of stabilizing treatment technique of 5052 aluminium alloys, it comprises the following steps that: 5052 aluminium alloy cast ingot weight fraction ratios are as follows: Si:0.10~0.15%, Fe :≤0.5%, Cu :≤0.005%, Mn:0.01~0.05%, Mg:2.0~2.5%, Cr:0.20~0.25%, Zn :≤0.005%, Ti:0.01~0.05%, single impurity≤0.05%, impurity total≤0.15%, surplus is Al, 5052 aluminium alloy cast ingots are subjected to sawing and mill face, 5052 aluminium alloy cast ingots behind sawing milling face are sent into heating furnace heats 3~5h at 480~520 DEG C, by 5052 aluminium alloy cast ingots after heating It comes out of the stove and carries out hot rolling, intermediate plate after hot rolling carries out cold rolling after being cooled to room temperature, cold-rolling deformation rate is 30~70%, aluminum alloy plate materials after cold rolling 180~250 DEG C at a temperature of carry out stabilizing annealing, annealing time is 2~8h, solves the problem of existing 5052 aluminium alloy processing technology window is relatively narrow, is unfavorable for process control in actual production.
Description
Technical field
The invention belongs to aluminium alloy manufacturing technology fields, are related to a kind of stabilizing treatment technique of 5052 aluminium alloys.
Background technique
5052 aluminium alloys have density small, good formability, corrosion resistance and medium intensity, with strip foil
Form be widely used in the fields such as aviation, electronics, decoration.5052 aluminum alloy sheets and strips of different purposes, finished product state, finished product
Thickness may be different, and blank state, sotck thinkness may also be different.5052 aluminium alloys belong to non-heat treated reinforced aluminium alloy, at
Product state has H1X state, H2X state, H3X state and O state, wherein X=2,4,6,8.The main addition alloying element of 5052 aluminium alloys is
Mg, the main schedule of reinforcement of alloy are working hardening.Currently, mainly to pass through deformation strong for 5052 aluminium alloys industrially produced
Change to increase the mechanical property of alloy, still, when by being placed for a long time at room temperature in the aluminium alloy of working hardening, in alloy
β meet and be continuously precipitated along crystal boundary, this can make material that age softening, mechanical properties decrease occur.Therefore, it is necessary to close to 5052 aluminium
Gold carries out suitable stabilization processes.
The stabilization process industrially used at present to 5052 aluminium alloys is carried out under high temperature to the plate after hot rolling
Between annealing be then cold-rolled to finished product thickness again, although this annealing process can make 5052 aluminium alloys meet the mechanics of H22 state
Performance requirement, but it is longer the time required to the intermediate annealing in this technique, and whole flow process reduces the production of 5052 aluminium alloys
Efficiency.In addition, 5052 current aluminium alloys are in production, the technological parameter of use is more single, for the product of same specification,
Can only be using fixed hot rolling blank thickness, annealing temperature and annealing time when production, this has resulted in processing work when production
Skill window is relatively narrow, the process control being on the one hand unfavorable in actual production, is on the other hand also unfavorable for the conjunction of products of different specifications
And it produces.It is simple, 5052 aluminium alloys of high production efficiency, processing technology window parameter greatly it is therefore desirable to seek a kind of process
Stabilization process.
Summary of the invention
In view of this, the present invention is relatively narrow in order to solve existing 5052 aluminium alloy processing technology window, it is unfavorable for practical life
In production the problem of process control, a kind of stabilizing treatment technique of 5052 aluminium alloys is provided.
In order to achieve the above objectives, the present invention provides a kind of stabilizing treatment technique of 5052 aluminium alloys, includes the following steps:
A, 5052 aluminium alloy stocks: Si:0.10~0.15%, Fe :≤0.5%, Cu are prepared according to following weight fraction ratio:
≤ 0.005%, Mn:0.01~0.05%, Mg:2.0~2.5%, Cr:0.20~0.25%, Zn :≤0.005%, Ti:0.01
~0.05%, single impurity≤0.05%, impurity adds up to≤0.15%, surplus Al, by prepared 5052 aluminium alloy stock
Melting is liquid aluminium alloy after evenly mixing in addition smelting furnace, obtains aluminium alloy melt；
B, aluminium alloy melt is refined under the conditions of 720~740 DEG C, refining time is 20~40min, after refining
Aluminium alloy melt founding be aluminium alloy cast ingot；
C, 5052 aluminium alloy cast ingots are subjected to sawing and mill face, 5052 aluminium alloy cast ingots behind sawing milling face are sent into heating furnace
In at 480~520 DEG C heat 3~5h；
D, 5052 aluminium alloy cast ingots after heating are come out of the stove and carries out hot rolling, the intermediate plate after hot rolling is cooled to room temperature laggard
Row cold rolling, cold-rolling deformation rate are 30~70%, aluminum alloy plate materials after cold rolling 180~250 DEG C at a temperature of stabilized
Annealing, annealing time are 2~8h；
E, after being cooled to room temperature aluminum alloy plate materials after stabilizing annealing, cleaning and stretch processing are carried out, when stretching applies
Drawing deformation be 0.6%；
F, the aluminum alloy plate materials after pre-stretching are subjected to straightening processing by straightener, last sawing scale wraps after examination
Dress, obtains 5052 aluminum alloy plate materials.
Further, 5052 aluminium alloy cast ingots are formulated by following elemental constituent according to weight percent in step A: Si:
0.10~0.15%, Fe:0.25~0.35%, Cu:0.003%, Mn:0.01~0.03%, Mg:2.2~2.45%, Cr:
0.20~0.25%, Zn:0.004%, Ti:0.01~0.025%, single impurity≤0.05%, impurity total≤0.15% are remaining
Amount is Al, and the weight percent summation of each component is 100%.
Further, it is filled with high pure nitrogen to melting furnace bottom during the refining of step B aluminium alloy melt, removes aluminium alloy
Foreign gas in melt.
Further, aluminium titanium boron wire fining agent, fining agent are added into smelting furnace during the refining of step B aluminium alloy melt
Additional amount be aluminium alloy melt weight 0.1~0.25%.
Further, the technical process in aluminium alloy cast ingot sawing milling face is that saw removes aluminium alloy cast ingot end to end in step C, with milling
Bed carries out milling face to aluminium alloy cast ingot side and big face, and the roughness Ra of aluminium alloy cast ingot is 0.15~0.30 μm behind milling face.
Further, 5052 aluminium alloy cast ingots after heating are come out of the stove and carry out hot rolling by step D, and the intermediate plate after hot rolling is cooling
Cold rolling is carried out after to room temperature, cold-rolling deformation rate is 30~70%, and the aluminum alloy plate materials after cold rolling are respectively in 250 DEG C, 240 DEG C, 220
DEG C, 200 DEG C, anneal at a temperature of 180 DEG C, annealing time is 2~8h.
Further, the type of cooling of aluminum alloy plate materials is the air-cooled mode synchronous with atomization cooling in step E, after cooling
Aluminum alloy plate materials temperature is 20~30 DEG C.
Further, straightener is roll leveller in step F.
The beneficial effects of the present invention are:
1, in the stabilizing treatment technique of 5052 aluminium alloy disclosed in this invention alloying component selection have it is important
Meaning when alloy content is controlled in a certain range, helps to improve the stability of material for 5052 alloys.
Just wherein the practical significance of the control range of main several alloying element contents is illustrated below:
Mg element has the effect of raising intensity of aluminum alloy, and content controls between 2.20~2.45%, can both make
The performance of material reaches using standard, and is unlikely to the phenomenon for the intensity surplus for occurring that the addition of Mg element excessively leads to material, from
And achieve the purpose that reduce by 5052 aluminum alloy plate materials manufacturing costs；
Fe element can form FeAl with Al element3, have the function of refining recrystal grain, but excessive Fe closes it
The casting process of gold generates adverse effect, therefore the ingredient of the alloy is the most suitable between 0.25~0.35%；
When Mn element is excessive, it is easy to be formed coarse hard crisp compound in aluminium alloy, can equally damages the property of aluminium alloy
Can, general additive amount is less than 0.1%；
Cr element has the function of improving aluminium alloy toughness, but excessive Cr will increase the quenching sensitive of alloy, because
0.20%, the upper limit is controlled 0.25% the control of this Cr element lower limit.
2, in the stabilizing treatment technique of 5052 aluminium alloy disclosed in this invention the selection of technological parameter also have it is important
Meaning, 5052 aluminium alloys belong to not heat-treatable strengthened aluminium alloy, therefore its schedule of reinforcement is mainly working hardening.It is right
5052 aluminium alloys carry out cold deformation processing, increase the intensity of alloy, and elongation percentage decline anneals to 5052 aluminium alloys
Processing can be such that its elongation percentage rises, hardness decline, therefore 5052 aluminium alloys are first carried out cold deformation processing and carry out the short time again
Annealing enable to the intensity of 5052 aluminium alloys and elongation percentage to be held in zone of reasonableness.In addition, annealing can be with
The β phase enabled aluminum alloy to is discontinuously precipitated, and increases the stability of material, therefore cold deformation and annealing must be controlled in a reasonable model
Within enclosing, just the comprehensive performance of alloy can be made to reach standard requirements.The stabilization processes of 5052 aluminium alloy disclosed in this invention
Process reform currently first passes through the processing technology that prolonged intermediate annealing carries out cold deformation again, reduces 5052 aluminium alloy plates
The production cost of material shortens the production cycle, and the 5052 alloy product performances produced are stable, intensity is high, elongation percentage is high, anti-
Curved performance is good.
Specific embodiment
Below by a preferred embodiment of the present invention will be described in detail.
Embodiment 1
A kind of stabilizing treatment technique of 5052 aluminium alloy, includes the following steps:
A, 5052 aluminium alloy stocks are prepared according to following weight fraction ratio:
| Element | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Impurity | Al |
| Content | 0.133 | 0.309 | 0.003 | 0.022 | 2.356 | 0.23 | 0.004 | 0.019 | 0.05 | Surplus |
By prepared 5052 aluminium alloy stock be added smelting furnace in after evenly mixing melting be liquid aluminium alloy, obtain aluminium
Alloy melt；
B, aluminium alloy melt is refined under the conditions of 740 DEG C, refining time 20min, by the aluminium alloy after refining
Melt founding is aluminium alloy cast ingot, is wherein filled with high pure nitrogen to melting furnace bottom during aluminium alloy melt refining, removes
Aluminium titanium boron wire fining agent is added into smelting furnace during refining for foreign gas in aluminium alloy melt, aluminium alloy melt, carefully
The additional amount of agent is the 0.1% of aluminium alloy melt weight；
C, 5052 aluminium alloy cast ingots are subjected to sawing and mill face, 5052 aluminium alloy cast ingots behind sawing milling face are sent into heating furnace
In 4h is heated at 500 DEG C, wherein aluminium alloy cast ingot sawing milling face technical process be saw remove aluminium alloy cast ingot end to end, with milling
Bed carries out milling face to aluminium alloy cast ingot side and big face, and the roughness Ra of aluminium alloy cast ingot is 0.20 μm behind milling face；
D, 5052 aluminium alloy cast ingots after heating are come out of the stove and carries out hot rolling, be hot-rolled down to the intermediate plate with a thickness of 4.5mm, it will
Intermediate plate carries out cold rolling after being cooled to room temperature, and the aluminum alloy plate materials after cold rolling are with a thickness of 3.15mm, cold rolling reduction 30%,
Aluminum alloy plate materials after cold rolling are respectively in 280 DEG C, 260 DEG C, 250 DEG C, 240 DEG C, 220 DEG C, 200 DEG C, 180 DEG C, 160 DEG C of temperature
Under anneal, annealing time be 2h or 8h；
E, after being cooled to room temperature aluminum alloy plate materials after stabilizing annealing, cleaning and stretch processing are carried out, when stretching applies
Drawing deformation be 0.6%, wherein the type of cooling of aluminum alloy plate materials is air-cooled and the cooling synchronous mode of atomization, after cooling
Aluminum alloy plate materials temperature be 30 DEG C；
F, the aluminum alloy plate materials after pre-stretching are subjected to straightening processing by roll leveller, last sawing scale is checked and accepted
After pack, obtain 5052 aluminum alloy plate materials.
Embodiment 2
A kind of stabilizing treatment technique of 5052 aluminium alloy, includes the following steps:
B, 5052 aluminium alloy stocks are prepared according to following weight fraction ratio:
| Element | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Impurity | Al |
| Content | 0.125 | 0.289 | 0.003 | 0.019 | 2.411 | 0.23 | 0.004 | 0.024 | 0.05 | Surplus |
By prepared 5052 aluminium alloy stock be added smelting furnace in after evenly mixing melting be liquid aluminium alloy, obtain aluminium
Alloy melt；
B, aluminium alloy melt is refined under the conditions of 740 DEG C, refining time 20min, by the aluminium alloy after refining
Melt founding is aluminium alloy cast ingot, is wherein filled with high pure nitrogen to melting furnace bottom during aluminium alloy melt refining, removes
Aluminium titanium boron wire fining agent is added into smelting furnace during refining for foreign gas in aluminium alloy melt, aluminium alloy melt, carefully
The additional amount of agent is the 0.15% of aluminium alloy melt weight；
C, 5052 aluminium alloy cast ingots are subjected to sawing and mill face, 5052 aluminium alloy cast ingots behind sawing milling face are sent into heating furnace
In 4h is heated at 500 DEG C, wherein aluminium alloy cast ingot sawing milling face technical process be saw remove aluminium alloy cast ingot end to end, with milling
Bed carries out milling face to aluminium alloy cast ingot side and big face, and the roughness Ra of aluminium alloy cast ingot is 0.20 μm behind milling face；
D, 5052 aluminium alloy cast ingots after heating are come out of the stove and carries out hot rolling, be hot-rolled down to the intermediate plate with a thickness of 4.5mm, it will
Intermediate plate carries out cold rolling after being cooled to room temperature, and the aluminum alloy plate materials after cold rolling are with a thickness of 2.25mm, cold rolling reduction 50%,
Aluminum alloy plate materials after cold rolling are respectively in 280 DEG C, 260 DEG C, 250 DEG C, 240 DEG C, 220 DEG C, 200 DEG C, 180 DEG C, 160 DEG C of temperature
Under anneal, annealing time be 2h or 8h；
E, after being cooled to room temperature aluminum alloy plate materials after stabilizing annealing, cleaning and stretch processing are carried out, when stretching applies
Drawing deformation be 0.6%, wherein the type of cooling of aluminum alloy plate materials is air-cooled and the cooling synchronous mode of atomization, after cooling
Aluminum alloy plate materials temperature be 30 DEG C；
F, the aluminum alloy plate materials after pre-stretching are subjected to straightening processing by roll leveller, last sawing scale is checked and accepted
After pack, obtain 5052 aluminum alloy plate materials.
Embodiment 3
A kind of stabilizing treatment technique of 5052 aluminium alloy, includes the following steps:
C, 5052 aluminium alloy stocks are prepared according to following weight fraction ratio:
| Element | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Impurity | Al |
| Content | 0.123 | 0.299 | 0.003 | 0.021 | 2.256 | 0.232 | 0.004 | 0.023 | 0.05 | Surplus |
By prepared 5052 aluminium alloy stock be added smelting furnace in after evenly mixing melting be liquid aluminium alloy, obtain aluminium
Alloy melt；
B, aluminium alloy melt is refined under the conditions of 740 DEG C, refining time 20min, by the aluminium alloy after refining
Melt founding is aluminium alloy cast ingot, is wherein filled with high pure nitrogen to melting furnace bottom during aluminium alloy melt refining, removes
Aluminium titanium boron wire fining agent is added into smelting furnace during refining for foreign gas in aluminium alloy melt, aluminium alloy melt, carefully
The additional amount of agent is the 0.2% of aluminium alloy melt weight；
C, 5052 aluminium alloy cast ingots are subjected to sawing and mill face, 5052 aluminium alloy cast ingots behind sawing milling face are sent into heating furnace
In 4h is heated at 500 DEG C, wherein aluminium alloy cast ingot sawing milling face technical process be saw remove aluminium alloy cast ingot end to end, with milling
Bed carries out milling face to aluminium alloy cast ingot side and big face, and the roughness Ra of aluminium alloy cast ingot is 0.20 μm behind milling face；
D, 5052 aluminium alloy cast ingots after heating are come out of the stove and carries out hot rolling, be hot-rolled down to the intermediate plate with a thickness of 4.5mm, it will
Intermediate plate carries out cold rolling after being cooled to room temperature, and the aluminum alloy plate materials after cold rolling are with a thickness of 1.35mm, cold rolling reduction 70%,
Aluminum alloy plate materials after cold rolling are respectively in 280 DEG C, 260 DEG C, 250 DEG C, 240 DEG C, 220 DEG C, 200 DEG C, 180 DEG C, 160 DEG C of temperature
Under anneal, annealing time be 2h or 8h；
E, after being cooled to room temperature aluminum alloy plate materials after stabilizing annealing, cleaning and stretch processing are carried out, when stretching applies
Drawing deformation be 0.6%, wherein the type of cooling of aluminum alloy plate materials is air-cooled and the cooling synchronous mode of atomization, after cooling
Aluminum alloy plate materials temperature be 30 DEG C；
F, the aluminum alloy plate materials after pre-stretching are subjected to straightening processing by roll leveller, last sawing scale is checked and accepted
After pack, obtain 5052 aluminum alloy plate materials.
Embodiment 4
A kind of stabilizing treatment technique of 5052 aluminium alloy, includes the following steps:
D, 5052 aluminium alloy stocks are prepared according to following weight fraction ratio:
By prepared 5052 aluminium alloy stock be added smelting furnace in after evenly mixing melting be liquid aluminium alloy, obtain aluminium
Alloy melt；
B, aluminium alloy melt is refined under the conditions of 720 DEG C, refining time 40min, by the aluminium alloy after refining
Melt founding is aluminium alloy cast ingot, is wherein filled with high pure nitrogen to melting furnace bottom during aluminium alloy melt refining, removes
Aluminium titanium boron wire fining agent is added into smelting furnace during refining for foreign gas in aluminium alloy melt, aluminium alloy melt, carefully
The additional amount of agent is the 0.15% of aluminium alloy melt weight；
C, 5052 aluminium alloy cast ingots are subjected to sawing and mill face, 5052 aluminium alloy cast ingots behind sawing milling face are sent into heating furnace
In 4h is heated at 500 DEG C, wherein aluminium alloy cast ingot sawing milling face technical process be saw remove aluminium alloy cast ingot end to end, with milling
Bed carries out milling face to aluminium alloy cast ingot side and big face, and the roughness Ra of aluminium alloy cast ingot is 0.20 μm behind milling face；
D, 5052 aluminium alloy cast ingots after heating are come out of the stove and carries out hot rolling, be hot-rolled down to the intermediate plate with a thickness of 4.5mm, it will
Intermediate plate carries out cold rolling after being cooled to room temperature, and the aluminum alloy plate materials after cold rolling are with a thickness of 0.90mm, cold rolling reduction 80%,
Aluminum alloy plate materials after cold rolling are respectively in 280 DEG C, 260 DEG C, 250 DEG C, 240 DEG C, 220 DEG C, 200 DEG C, 180 DEG C, 160 DEG C of temperature
Under anneal, annealing time be 2h or 8h；
E, after being cooled to room temperature aluminum alloy plate materials after stabilizing annealing, cleaning and stretch processing are carried out, when stretching applies
Drawing deformation be 0.6%, wherein the type of cooling of aluminum alloy plate materials is air-cooled and the cooling synchronous mode of atomization, after cooling
Aluminum alloy plate materials temperature be 30 DEG C；
F, the aluminum alloy plate materials after pre-stretching are subjected to straightening processing by roll leveller, last sawing scale is checked and accepted
After pack, obtain 5052 aluminum alloy plate materials.
Embodiment 5
A kind of stabilizing treatment technique of 5052 aluminium alloy, includes the following steps:
E, 5052 aluminium alloy stocks are prepared according to following weight fraction ratio:
| Element | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Impurity | Al |
| Content | 0.103 | 0.267 | 0.003 | 0.021 | 2.378 | 0.233 | 0.004 | 0.018 | 0.05 | Surplus |
By prepared 5052 aluminium alloy stock be added smelting furnace in after evenly mixing melting be liquid aluminium alloy, obtain aluminium
Alloy melt；
B, aluminium alloy melt is refined under the conditions of 720 DEG C, refining time 40min, by the aluminium alloy after refining
Melt founding is aluminium alloy cast ingot, is wherein filled with high pure nitrogen to melting furnace bottom during aluminium alloy melt refining, removes
Aluminium titanium boron wire fining agent is added into smelting furnace during refining for foreign gas in aluminium alloy melt, aluminium alloy melt, carefully
The additional amount of agent is the 0.15% of aluminium alloy melt weight；
C, 5052 aluminium alloy cast ingots are subjected to sawing and mill face, 5052 aluminium alloy cast ingots behind sawing milling face are sent into heating furnace
In 4h is heated at 500 DEG C, wherein aluminium alloy cast ingot sawing milling face technical process be saw remove aluminium alloy cast ingot end to end, with milling
Bed carries out milling face to aluminium alloy cast ingot side and big face, and the roughness Ra of aluminium alloy cast ingot is 0.20 μm behind milling face；
D, 5052 aluminium alloy cast ingots after heating are come out of the stove and carries out hot rolling, be hot-rolled down to the intermediate plate with a thickness of 4.5mm, it will
Intermediate plate carries out cold rolling after being cooled to room temperature, and the aluminum alloy plate materials after cold rolling are with a thickness of 0.45mm, cold rolling reduction 90%,
Aluminum alloy plate materials after cold rolling are respectively in 280 DEG C, 260 DEG C, 250 DEG C, 240 DEG C, 220 DEG C, 200 DEG C, 180 DEG C, 160 DEG C of temperature
Under anneal, annealing time be 2h or 8h；
E, after being cooled to room temperature aluminum alloy plate materials after stabilizing annealing, cleaning and stretch processing are carried out, when stretching applies
Drawing deformation be 0.6%, wherein the type of cooling of aluminum alloy plate materials is air-cooled and the cooling synchronous mode of atomization, after cooling
Aluminum alloy plate materials temperature be 28 DEG C；
F, the aluminum alloy plate materials after pre-stretching are subjected to straightening processing by roll leveller, last sawing scale is checked and accepted
After pack, obtain 5052 aluminum alloy plate materials.
5052 aluminium alloys in Examples 1 to 5 with different cold rolling reductions are annealed at 160~280 DEG C 2 and 8 small
When plate carry out Mechanics Performance Testing, test result is as shown in 1~table of table 5.
Table 1 is mechanical experimental results of 5052 aluminum alloy plate materials of the preparation of embodiment 1 under different annealing temperature
| Annealing temperature/DEG C/h | Tensile strength/MPa | Yield strength/MPa | Elongation percentage/% |
| 160℃/2h | 225 | 173 | 9.5 |
| 160℃/8h | 223 | 168 | 11.5 |
| 180℃/2h | 219 | 167 | 12.3 |
| 180℃/8h | 218 | 166 | 12.4 |
| 200℃/2h | 218 | 167 | 11.9 |
| 200℃/8h | 217 | 163 | 12.6 |
| 220℃/2h | 217 | 163 | 13.6 |
| 220℃/8h | 217 | 161 | 13.2 |
| 240℃/2h | 215 | 158 | 12.7 |
| 240℃/8h | 215 | 156 | 13.9 |
| 250℃/2h | 217 | 164 | 13.5 |
| 250℃/8h | 215 | 156 | 14.5 |
| 260℃/2h | 213 | 156 | 13.9 |
| 260℃/8h | 210 | 153 | 14.8 |
| 280℃/2h | 209 | 152 | 13.5 |
| 280℃/8h | 206 | 124 | 17.5 |
Table 2 is mechanical experimental results of 5052 aluminum alloy plate materials of the preparation of embodiment 2 under different annealing temperature
| Annealing temperature/DEG C | Tensile strength/MPa | Yield strength/MPa | Elongation percentage/% |
| 160℃/2h | 241 | 199 | 7.1 |
| 160℃/8h | 239 | 195 | 8.0 |
| 180℃/2h | 235 | 194 | 9.0 |
| 180℃/8h | 235 | 192 | 9.8 |
| 200℃/2h | 236 | 193 | 10.6 |
| 200℃/8h | 236 | 190 | 10.6 |
| 220℃/2h | 234 | 190 | 10.3 |
| 220℃/8h | 229 | 182 | 10.5 |
| 240℃/2h | 234 | 186 | 11.8 |
| 240℃/8h | 227 | 176 | 12.1 |
| 250℃/2h | 229 | 184 | 10.5 |
| 250℃/8h | 226 | 166 | 13.2 |
| 260℃/2h | 224 | 173 | 12.5 |
| 260℃/8h | 211 | 125 | 15.1 |
| 280℃/2h | 205 | 130 | 14.7 |
| 280℃/8h | 196 | 89 | 24 |
Table 3 is mechanical experimental results of 5052 aluminum alloy plate materials of the preparation of embodiment 3 under different annealing temperature
Table 4 is mechanical experimental results of 5052 aluminum alloy plate materials of the preparation of embodiment 4 under different annealing temperature
| Annealing temperature/DEG C | Tensile strength/MPa | Yield strength/MPa | Elongation percentage/% |
| 160℃/2h | 268 | 238 | 5.8 |
| 160℃/8h | 265 | 232 | 6.5 |
| 180℃/2h | 258 | 226 | 7.0 |
| 180℃/8h | 256 | 221 | 8.1 |
| 200℃/2h | 253 | 219 | 8.4 |
| 200℃/8h | 253 | 217 | 10.0 |
| 220℃/2h | 250 | 214 | 9.5 |
| 220℃/8h | 247 | 207 | 9.8 |
| 240℃/2h | 243 | 205 | 9.8 |
| 240℃/8h | 236 | 187 | 10.9 |
| 250℃/2h | 242 | 199 | 11 |
| 250℃/8h | 219 | 146 | 14.4 |
| 260℃/2h | 227 | 172 | 11.5 |
| 260℃/8h | 199 | 102 | 22.6 |
| 280℃/2h | 198 | 99 | 23.8 |
| 280℃/8h | 196 | 101 | 25.5 |
Table 5 is mechanical experimental results of 5052 aluminum alloy plate materials of the preparation of embodiment 5 under different annealing temperature
For actual production, in addition to the mechanical property of product to be considered meets the requirements, equipment is also taken into account as far as possible
Loading condition, improve production efficiency, i.e. product will be convenient for arranging production.Comparison discovery by actual production, alloy carry out
It is higher to hot rolled plate thickness requirement when deflection is less than 30% when cold rolling is processed, it is not easy to arrange production, deflection is greater than
When 70%, needs to carry out multi- pass rolling, be also easy to produce surface defect, be unfavorable for being mass produced.Therefore, with product mechanical property
It is reference standard with production efficiency, table six gives practical effect of 5052 aluminium alloys under the conditions of different stabilizing treatment techniques
Fruit, wherein two unqualified labels are during a mark of conformity is, two equal marks of conformity are excellent.
Table six is actual effect of 5052 aluminium alloys in different stabilization process conditions
As can be seen from Table VI, cold rolling reduction is 30~70%, and annealing temperature is 180~250 DEG C, soaking time 2
~8h, not only mechanical property meets the requirement of H22 state to 5052 alloy products under this stabilization process, but also improves production
The production efficiency of product, reduces energy consumption.
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 (8)
1. a kind of stabilizing treatment technique of 5052 aluminium alloys, which comprises the steps of:
A, 5052 aluminium alloy stocks: Si:0.10~0.15%, Fe :≤0.5%, Cu are prepared according to following weight fraction ratio :≤
0.005%, Mn:0.01~0.05%, Mg:2.0~2.5%, Cr:0.20~0.25%, Zn :≤0.005%, Ti:0.01~
0.05%, single impurity≤0.05%, impurity adds up to≤0.15%, surplus Al, and prepared 5052 aluminium alloy stock is added
Entering in smelting furnace melting after evenly mixing is liquid aluminium alloy, obtains aluminium alloy melt；
B, aluminium alloy melt is refined under the conditions of 720~740 DEG C, refining time is 20~40min, by the aluminium after refining
Alloy melt founding is aluminium alloy cast ingot；
C, 5052 aluminium alloy cast ingots are subjected to sawing and mill face, 5052 aluminium alloy cast ingots behind sawing milling face are sent into heating furnace
3~5h is heated at 480~520 DEG C；
D, 5052 aluminium alloy cast ingots after heating are come out of the stove and carries out hot rolling, the intermediate plate after hot rolling carries out cold after being cooled to room temperature
Roll, cold-rolling deformation rate is 30~70%, aluminum alloy plate materials after cold rolling 180~250 DEG C at a temperature of carry out stabilizing annealing,
Annealing time is 2~8h；
E, after being cooled to room temperature aluminum alloy plate materials after stabilizing annealing, cleaning and stretch processing, the drawing that when stretching applies are carried out
Stretching deformation rate is 0.6%；
F, the aluminum alloy plate materials after pre-stretching are subjected to straightening processing by straightener, last sawing scale is packed after examination, obtained
To 5052 aluminum alloy plate materials.
2. the stabilizing treatment technique of 5052 aluminium alloy as described in claim 1, which is characterized in that 5052 aluminium close in step A
Golden ingot casting is formulated by following elemental constituent according to weight percent: Si:0.10~0.15%, Fe:0.25~0.35%,
Cu:0.003%, Mn:0.01~0.03%, Mg:2.2~2.45%, Cr:0.20~0.25%, Zn:0.004%, Ti:0.01
~0.025%, single impurity≤0.05%, impurity adds up to≤0.15%, and the weight percent summation of surplus Al, each component are
100%.
3. the stabilizing treatment technique of 5052 aluminium alloy as described in claim 1, which is characterized in that step B aluminium alloy melt
It is filled with high pure nitrogen to melting furnace bottom during refining, removes the foreign gas in aluminium alloy melt.
4. the stabilizing treatment technique of 5052 aluminium alloy as described in claim 1, which is characterized in that step B aluminium alloy melt
Aluminium titanium boron wire fining agent is added during refining into smelting furnace, the additional amount of fining agent is the 0.1 of aluminium alloy melt weight
~0.25%.
5. the stabilizing treatment technique of 5052 aluminium alloy as described in claim 1, which is characterized in that aluminium alloy is cast in step C
The technical process in ingot sawing milling face is that saw removes aluminium alloy cast ingot end to end, is milled with milling machine to aluminium alloy cast ingot side and big face
Face, the roughness Ra of aluminium alloy cast ingot is 0.15~0.30 μm behind milling face.
6. the stabilizing treatment technique of 5052 aluminium alloy as described in claim 1, which is characterized in that step D will be after heating
5052 aluminium alloy cast ingots, which are come out of the stove, carries out hot rolling, and the intermediate plate after hot rolling carries out cold rolling after being cooled to room temperature, and cold-rolling deformation rate is
30~70%, aluminum alloy plate materials after cold rolling respectively 250 DEG C, 240 DEG C, 220 DEG C, 200 DEG C, 180 DEG C at a temperature of moved back
Fire, annealing time are 2~8h.
7. the stabilizing treatment technique of 5052 aluminium alloy as described in claim 1, which is characterized in that aluminium alloy plate in step E
The type of cooling of material is the air-cooled mode synchronous with atomization cooling, and aluminum alloy plate materials temperature after cooling is 20~30 DEG C.
8. the stabilizing treatment technique of 5052 aluminium alloy as described in claim 1, which is characterized in that straightener is in step F
Roll leveller.
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| CN110952007A (en) * | 2019-12-19 | 2020-04-03 | 天津忠旺铝业有限公司 | Preparation process of 5083-H116-state aluminum alloy |
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| CN113523722A (en) * | 2021-07-15 | 2021-10-22 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy structural member for air cushion furnace production vehicle |
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