CN107739924B - A kind of new-energy automobile vacuum booster shell aluminium alloy strips and preparation method - Google Patents
A kind of new-energy automobile vacuum booster shell aluminium alloy strips and preparation method Download PDFInfo
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- CN107739924B CN107739924B CN201711123607.9A CN201711123607A CN107739924B CN 107739924 B CN107739924 B CN 107739924B CN 201711123607 A CN201711123607 A CN 201711123607A CN 107739924 B CN107739924 B CN 107739924B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- 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
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- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
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- Metal Rolling (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
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- Heat Treatment Of Sheet Steel (AREA)
Abstract
The present invention provides a kind of new-energy automobile vacuum booster shell aluminium alloy strips and preparation method thereof.The tensile strength of aluminium alloy strips obtained by the present invention reaches 220-255MPa, and yield strength reaches 105-135MPa, elongation >=21%, Strip Shape straightness≤20 I；Existing good forming property, can satisfy vacuum booster shell three times deep-draw, flange twice complicated forming technology, and be able to satisfy vacuum booster shell to the intensity requirement of material；The band production vacuum booster shell of aluminium alloy obtained by the present invention is compared with steel shell, and loss of weight about 50%, corrosion resistance is more preferable, absorb and damping vibrations and noise ability be improved significantly.
Description
Technical field
The invention belongs to the preparation fields of aluminium alloy strips, and in particular to a kind of new-energy automobile vacuum booster shell use
Aluminium alloy strips and preparation method thereof.
Background technique
Automobile vacuum booster is key safety part in vehicle servo brake system, the moulding material of the part shell compared with
It is thin, it is complex-shaped special, deformed in drawing process it is larger, shape it is relatively difficult.It is mainly formed at present with steel plate punched, there are zero
Part containment weight is larger, and corrosion resistance is poor, absorb and damping vibrations and noise ability it is lower.As servo brake is more answered
With exploitation has more reliability, and weight is lighter and the better aluminum alloy casing vacuum booster of energy absorption capacity is the certainty for braking development
Trend.
Summary of the invention
The purpose of the present invention is to provide one kind to have moderate strength, favorable forming property, corrosion resistance and plate shape
The good new-energy automobile vacuum booster shell aluminium alloy strips and preparation method thereof of quality.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of new-energy automobile vacuum booster shell aluminium alloy strips, ingredient is as mass fraction are as follows: Fe 0.10-
0.30%、Si 0.05-0.15%、Cu 0.01-0.10%、Mn 0.25-0.50%、Mg2.6-3.5%、Cr 0.01-0.15%、Zn
0.01-0.20%, Ti 0.01-0.05%, surplus are Al and inevitable impurity.
A method of preparing new-energy automobile vacuum booster shell aluminium alloy strips as described above, specific steps
It is as follows:
(1) ingredient of aluminium alloy strips is pressed, nitrogen injection refining, online degasification remove in aluminium alloy stock is smelting, furnace
After slag, the molten aluminum after refining is cast as cast aluminium alloy flat ingot with semi-continuous casting method；
(2) behind rectangle ingot jagsaw head, milling face, into heating stove heating, heating temperature is 480-560 DEG C, and keeps the temperature 4-
12h；
(3) ingot blank is first rolled into the intermediate base of 21-26mm thickness through hot rough rolling mill, then extremely by hot finishing mill tandem rolling after coming out of the stove
The hot-rolled band of 2.0-3.5mm thickness, hot finishing mill finishing temperature control is at 320-360 DEG C；
(4) hot-rolled band is carried out on cold-rolling mill being cold-rolled to certain thickness, reserves 20-40%'s according to finished product thickness
Finished product cold processing ratio；
(5) band after cold rolling is subjected to intermediate annealing, fills protection inert gas in furnace when annealing, oxygen content is lower than in furnace
1000ppm, annealing temperature are 320-400 DEG C, are taken out after coiled material to temperature 3-6h, air cooling to room temperature；
(6) aluminum strip after annealing is rolling to finished product thickness on cold-rolling mill；
(7) by the aluminum strip of step (6) processing through the cleaning of stretch bending-straightening machine column, tension straingtening；
(8) aluminum strip after step (7) processing is subjected to finished products, annealing temperature is 280-340 DEG C, coiled material to temperature 2-6h
After take out, air cooling to room temperature；
(9) aluminum strip for obtaining step (8) carries out trimming or slitting into required specification on slitter, is made new
Energy automobile vacuum booster shell aluminium alloy strips.
The beneficial effects of the present invention are:
1) tensile strength of the aluminium alloy strips obtained by the present invention reaches 220-255MPa, and yield strength reaches 105-
135MPa, elongation >=21%, Strip Shape straightness≤20 I；Existing good forming property, can satisfy vacuum booster
Shell three times deep-draw, flange twice complicated forming technology, and be able to satisfy vacuum booster shell to the intensity requirement of material;
2) the band production vacuum booster shell of the aluminium alloy obtained by the present invention is compared with steel shell, and loss of weight is about
50%, good corrosion resistance, absorb and damping vibrations and noise ability be improved significantly.
Detailed description of the invention
Fig. 1 is using vacuum booster shell made from 1 material of embodiment；
Fig. 2 is using vacuum booster shell made from 3 material of embodiment.
Specific embodiment
The present invention is further illustrated by the following examples, but protection scope of the present invention is not limited to following reality
Apply example.
Embodiment 1
A kind of new-energy automobile vacuum booster shell aluminium alloy strips, ingredient is as mass fraction are as follows: Fe
0.259%, Si 0.101%, Cu 0.032%, Mn 0.341%, Mg 3.28%, Cr 0.128%, Zn 0.012%, Ti 0.017%,
Surplus is Al and inevitable impurity.
A method of preparing new-energy automobile vacuum booster shell aluminium alloy strips as described above, specific steps
It is as follows:
(1) ingredient of aluminium alloy strips is pressed, nitrogen injection refining, online degasification remove in aluminium alloy stock is smelting, furnace
After slag, the molten aluminum after refining is cast as cast aluminium alloy flat ingot with semi-continuous casting method；
(2) behind rectangle ingot jagsaw head, milling face, into heating stove heating, being heated to metal temperature is 540 DEG C, and is kept the temperature
8h；
(3) ingot blank is first rolled into the intermediate base of 24mm thickness through hot rough rolling mill, then extremely by hot finishing mill tandem rolling after coming out of the stove
The hot-rolled band of 3.5mm thickness, hot finishing mill finishing temperature control is at 340 DEG C；
(4) hot-rolled band is carried out on cold-rolling mill being cold-rolled to 2.0mm thickness；
(5) band after cold rolling is subjected to intermediate annealing, fills protection inert gas, oxygen content in furnace in furnace when annealing
980ppm, annealing temperature are 400 DEG C, are taken out after coiled material to temperature 4h, air cooling to room temperature；
(6) aluminum strip after annealing is rolling to finished product thickness 1.3mm on cold-rolling mill；
(7) by the aluminum strip of step (6) processing through the cleaning of stretch bending-straightening machine column, tension straingtening；
(8) aluminum strip after step (7) processing is subjected to finished products, annealing temperature is 340 DEG C, is taken after coiled material to temperature 5h
Out, air cooling is to room temperature；
(9) band for obtaining step (8) carries out trimming or slitting into required specification on slitter, and vapour is made
Vehicle vacuum booster shell aluminium alloy strips.
Tensile strength through aluminium alloy strips made from this method is 252MPa, and yield strength reaches 130MPa elongation and is
21.5%, 18 I of Strip Shape straightness, band intercrystalline corrosion rate are 3.156mg/cm2 , anti-strip corrosion class is up to PA grades.
Embodiment 2
A kind of new-energy automobile vacuum booster shell aluminium alloy strips, ingredient is as mass fraction are as follows: Fe
0.278%, Si 0.107%, Cu 0.038%, Mn 0.338%, Mg 3.37%, Cr 0.131%, Zn 0.010%, Ti 0.020%,
Surplus is Al and inevitable impurity.
A method of preparing new-energy automobile vacuum booster shell aluminium alloy strips as described above, specific steps
It is as follows:
(1) ingredient of aluminium alloy strips is pressed, nitrogen injection refining, online degasification remove in aluminium alloy stock is smelting, furnace
After slag, the molten aluminum after refining is cast as cast aluminium alloy flat ingot with semi-continuous casting method；
(2) behind rectangle ingot jagsaw head, milling face, into heating stove heating, being heated to metal temperature is 540 DEG C, and is kept the temperature
6h；
(3) ingot blank is first rolled into the intermediate base of 22mm thickness through hot rough rolling mill, then extremely by hot finishing mill tandem rolling after coming out of the stove
The hot-rolled band of 3.0mm thickness, hot finishing mill finishing temperature control is at 340 DEG C；
(4) hot-rolled band is carried out on cold-rolling mill being cold-rolled to 1.5mm thickness；
(5) band after cold rolling is subjected to intermediate annealing, fills protection inert gas, oxygen content in furnace in furnace when annealing
950ppm, annealing temperature are 360 DEG C, are taken out after coiled material to temperature 4h, air cooling to room temperature；
(6) aluminum strip after annealing is rolling to finished product thickness 1.0mm on cold-rolling mill；
(7) by the aluminum strip of step (6) processing through the cleaning of stretch bending-straightening machine column, tension straingtening；
(8) aluminum strip after step (7) processing is subjected to finished products, annealing temperature is 340 DEG C, is taken after coiled material to temperature 4h
Out, air cooling is to room temperature；
(9) aluminum strip for obtaining step (8) carries out trimming or slitting into required specification on slitter, is made
Automobile vacuum booster shell aluminium alloy strips.
Tensile strength through aluminium alloy strips made from this method is 246MPa, and yield strength reaches 124MPa, elongation
It is 22%, 16 I of Strip Shape straightness, band intercrystalline corrosion rate is 3.17mg/cm2 , anti-strip corrosion class is up to PA grades.
Embodiment 3
A kind of new-energy automobile vacuum booster shell aluminium alloy strips, ingredient is as mass fraction are as follows: Fe
0.230%, Si 0.091%, Cu 0.044%, Mn 0.25%, Mg 2.87%, Cr 0.105%, Zn 0.011%, Ti 0.018%, it is remaining
Amount is Al and inevitable impurity.
A method of preparing new-energy automobile vacuum booster shell aluminium alloy strips as described above, specific steps
It is as follows:
(1) ingredient of aluminium alloy strips is pressed, nitrogen injection refining, online degasification remove in aluminium alloy stock is smelting, furnace
After slag, the molten aluminum after refining is cast as cast aluminium alloy flat ingot with semi-continuous casting method；
(2) behind rectangle ingot jagsaw head, milling face, into heating stove heating, being heated to metal temperature is 540 DEG C, and is kept the temperature
10h；
(3) ingot blank is first rolled into the intermediate base of 21mm thickness through hot thick machine, then extremely by hot finishing mill tandem rolling after coming out of the stove
The hot-rolled band of 2.5mm thickness, hot finishing mill finishing temperature control is at 320 DEG C；
(4) hot-rolled band is carried out on cold-rolling mill being cold-rolled to 1.7mm thickness；
(5) band after cold rolling is subjected to intermediate annealing, fills protection inert gas, oxygen content in furnace in furnace when annealing
900ppm, annealing temperature are 360 DEG C, are taken out after coiled material to temperature 4h, air cooling to room temperature；
(6) aluminum strip after annealing is rolling to finished product thickness 1.2mm on cold-rolling mill；
(7) by the aluminum strip of step (6) processing through the cleaning of stretch bending-straightening machine column, tension straingtening；
(8) aluminum strip after step (7) processing is subjected to finished products, annealing temperature is 320 DEG C, is taken after coiled material to temperature 5h
Out, air cooling is to room temperature；
(9) aluminum strip for obtaining step (8) carries out trimming or slitting into required specification on slitter, is made
Automobile vacuum booster shell aluminium alloy strips.
Tensile strength through aluminium alloy strips made from this method is 228MPa, and yield strength reaches 108MPa, elongation
It is 22.5%, 15 I of Strip Shape straightness, band intercrystalline corrosion rate is 3.165mg/cm2 , anti-strip corrosion class reach PA
Grade.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (1)
1. a kind of preparation method of new-energy automobile vacuum booster shell aluminium alloy strips, which is characterized in that the aluminium closes
The ingredient of gold ribbon material is as mass fraction are as follows: Fe 0.230%, Si 0.091%, Cu 0.044%, Mn 0.25%, Mg 2.87%, Cr
0.105%, Zn 0.011%, Ti 0.018%, surplus are Al and inevitable impurity；
The preparation method of the new-energy automobile vacuum booster shell aluminium alloy strips, the specific steps are as follows:
(1) ingredient of aluminium alloy strips is pressed, nitrogen injection refining, online degasification slagging-off in aluminium alloy stock is smelting, furnace
Afterwards, the molten aluminum after refining is cast as cast aluminium alloy flat ingot with semi-continuous casting method；
(2) behind rectangle ingot jagsaw head, milling face, into heating stove heating, being heated to metal temperature is 540 DEG C, and keeps the temperature 10h；
(3) ingot blank is first rolled into the intermediate base of 21mm thickness after coming out of the stove through hot thick machine, then passes through hot finishing mill tandem rolling to 2.5mm thickness
Hot-rolled band, hot finishing mill finishing temperature control is at 320 DEG C；
(4) hot-rolled band is carried out on cold-rolling mill being cold-rolled to 1.7mm thickness；
(5) band after cold rolling is subjected to intermediate annealing, fills protection inert gas in furnace when annealing, oxygen content 900ppm in furnace,
Annealing temperature is 360 DEG C, is taken out after coiled material to temperature 4h, air cooling to room temperature；
(6) aluminum strip after annealing is rolling to finished product thickness 1.2mm on cold-rolling mill；
(7) by the aluminum strip of step (6) processing through the cleaning of stretch bending-straightening machine column, tension straingtening；
(8) aluminum strip after step (7) processing is subjected to finished products, annealing temperature is 320 DEG C, is taken out after coiled material to temperature 5h, wind
It is cooled to room temperature；
(9) aluminum strip for obtaining step (8) carries out trimming or slitting into required specification on slitter, and automobile is made
Vacuum booster shell aluminium alloy strips.
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| CN201711123607.9A CN107739924B (en) | 2017-11-14 | 2017-11-14 | A kind of new-energy automobile vacuum booster shell aluminium alloy strips and preparation method |
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| CN201711123607.9A CN107739924B (en) | 2017-11-14 | 2017-11-14 | A kind of new-energy automobile vacuum booster shell aluminium alloy strips and preparation method |
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| CN107739924B true CN107739924B (en) | 2019-07-12 |
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| CN111057885A (en) * | 2019-12-28 | 2020-04-24 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy strip with improved punched flanging height |
| CN115255811A (en) * | 2022-06-13 | 2022-11-01 | 力野精密工业（深圳）有限公司 | Novel high-precision process for turning damping part |
| CN115341082B (en) * | 2022-08-01 | 2023-11-17 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
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| CN101166845A (en) * | 2004-08-27 | 2008-04-23 | 联邦工业有限公司 | Aluminum automotive structural members |
| CN101144133A (en) * | 2007-10-23 | 2008-03-19 | 江苏常铝铝业股份有限公司 | Aluminum alloy band for jalousie and manufacturing method thereof |
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