CN107739924A - 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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- CN107739924A CN107739924A CN201711123607.9A CN201711123607A CN107739924A CN 107739924 A CN107739924 A CN 107739924A CN 201711123607 A CN201711123607 A CN 201711123607A CN 107739924 A CN107739924 A CN 107739924A
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- aluminium alloy
- vacuum booster
- alloy strips
- booster shell
- stove
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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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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- 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%, the I of Strip Shape glacing flatness≤20；Existing good forming property, it can meet that deep-draw, the complicated forming technology of flange twice, and can meet intensity requirement of the vacuum booster shell to material to vacuum booster shell three times；The band of aluminium alloy obtained by the present invention makes vacuum booster shell 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 field of aluminium alloy strips, and in particular to a kind of new-energy automobile vacuum booster shell is used
Aluminium alloy strips and preparation method thereof.
Background technology
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, shaping it is relatively difficult.Mainly formed at present with steel plate punched, there is zero
Part containment weight is larger, and corrosion resistance is poor, absorbs relatively low with damping vibrations and noise ability.As servo brake more should
With exploitation has more reliability, and weight is lighter and the more preferable aluminum alloy casing vacuum booster of energy absorption capacity is the certainty for braking development
Trend.
The content of the invention
It is an object of the invention to provide one kind to have moderate strength, favorable forming property, decay resistance and plate shape
Good new-energy automobile vacuum booster shell aluminium alloy strips of quality and preparation method thereof.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of new-energy automobile vacuum booster shell aluminium alloy strips, composition are as mass fraction： 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 kind of method for preparing new-energy automobile vacuum booster shell aluminium alloy strips as described above, specific steps
It is as follows：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, nitrogen injection refining in stove, after line degasification slagging-off,
The aluminium liquid 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 heat, heating-up temperature is 480-560 DEG C, and is incubated 4-12h；
（3）Ingot blank is first rolled into the thick middle bases of 21-26mm through hot rough rolling mill after coming out of the stove, then passes through hot finishing mill tandem rolling to 2.0-
Hot-rolled band thick 3.5mm, hot finishing mill finishing temperature control is at 320-360 DEG C；
（4）Hot-rolled band carried out on cold-rolling mill to be cold-rolled to certain thickness, 20-40% finished product is reserved according to finished product thickness
Cold processing ratio；
（5）Band after cold rolling is subjected to intermediate annealing, fills protection inert gas in stove during annealing, oxygen content is less than in stove
1000ppm, annealing temperature are 320-400 DEG C, are taken out after coiled material to warm 3-6h, air cooling to normal temperature；
（6）Aluminum strip after annealing is rolling to finished product thickness on cold-rolling mill；
（7）By step（6）The aluminum strip of processing is through the cleaning of stretch bending-straightening machine row, tension straingtening；
（8）By step（7）Aluminum strip carries out finished products after processing, and annealing temperature is 280-340 DEG C, is taken after coiled material to warm 2-6h
Go out, air cooling to normal temperature；
（9）By step（8）Obtained aluminum strip carries out trimming or slitting into required specification on slitter, and new energy is made
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%, the I of Strip Shape glacing flatness≤20；Existing good forming property, can meet vacuum booster
Deep-draw, the complicated forming technology of flange twice, and can meet intensity requirement of the vacuum booster shell to material to shell three times;
2) band of the aluminium alloy obtained by the present invention makes vacuum booster shell compared with steel shell, and loss of weight about 50% is resistance to
Corrosivity is good, absorb and damping vibrations and noise ability be improved significantly.
Brief description of the drawings
Fig. 1 is using vacuum booster shell made from the material of embodiment 1；
Fig. 2 is using vacuum booster shell made from the material of embodiment 3.
Embodiment
The present invention further illustrates the present invention with the following example, 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, composition are as mass fraction：Fe 0.259%、Si
0.101%th, Cu 0.032%, Mn 0.341%, Mg 3.28%, Cr 0.128%, Zn 0.012%, Ti 0.017%, surplus be Al and
Inevitable impurity.
A kind of method for preparing new-energy automobile vacuum booster shell aluminium alloy strips as described above, specific steps
It is as follows：
(1) composition of aluminium alloy strips is pressed, by aluminium alloy stock is smelting, nitrogen injection refining, online degasification remove the gred in stove
Afterwards, the aluminium liquid 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 heat, metal temperature is heated to as 540 DEG C, and be incubated 8h；
(3) ingot blank is first rolled into the thick middle bases of 24mm through hot rough rolling mill after coming out of the stove, then passes through hot finishing mill tandem rolling to 3.5mm
Thick hot-rolled band, 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 during annealing in stove, oxygen content 980ppm in stove,
Annealing temperature is 400 DEG C, is taken out after coiled material to warm 4h, air cooling to normal 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 row, tension straingtening；
(8) aluminum strip after step (7) processing is subjected to finished products, annealing temperature is 340 DEG C, is taken out after coiled material to warm 5h, wind
It is cooled to normal temperature；
(9) band for obtaining step (8) carries out trimming or slitting into required specification on slitter, and it is true that automobile is made
Empty booster shell aluminium alloy strips.
Tensile strength through aluminium alloy strips made from this method is 252MPa, and yield strength reaches 130MPa elongations and is
21.5%, the I of Strip Shape glacing flatness 18, band intercrystalline corrosion speed are 3.156mg/cm2 , anti-strip corrosion class reaches PA levels.
Embodiment 2
A kind of new-energy automobile vacuum booster shell aluminium alloy strips, composition are as mass fraction：Fe 0.278%、Si
0.107%th, Cu 0.038%, Mn 0.338%, Mg 3.37%, Cr 0.131%, Zn 0.010%, Ti 0.020%, surplus be Al and
Inevitable impurity.
A kind of method for preparing new-energy automobile vacuum booster shell aluminium alloy strips as described above, specific steps
It is as follows：
(1) composition of aluminium alloy strips is pressed, by aluminium alloy stock is smelting, nitrogen injection refining, online degasification remove the gred in stove
Afterwards, the aluminium liquid 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 heat, metal temperature is heated to as 540 DEG C, and be incubated 6h；
(3) ingot blank is first rolled into the thick middle bases of 22mm through hot rough rolling mill after coming out of the stove, then passes through hot finishing mill tandem rolling to 3.0mm
Thick hot-rolled band, 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 during annealing in stove, oxygen content 950ppm in stove,
Annealing temperature is 360 DEG C, is taken out after coiled material to warm 4h, air cooling to normal 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 row, tension straingtening；
(8) aluminum strip after step (7) processing is subjected to finished products, annealing temperature is 340 DEG C, is taken out after coiled material to warm 4h, wind
It is cooled to normal 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.
Tensile strength through aluminium alloy strips made from this method is 246MPa, and yield strength reaches 124MPa, elongation
For 22%, the I of Strip Shape glacing flatness 16, band intercrystalline corrosion speed is 3.17mg/cm2 , anti-strip corrosion class reaches PA levels.
Embodiment 3
A kind of new-energy automobile vacuum booster shell aluminium alloy strips, composition are as mass fraction：Fe 0.230%、Si
0.091%th, Cu 0.044%, Mn 0.25%, Mg 2.87%, Cr 0.105%, Zn 0.011%, Ti 0.018%, surplus is for Al and not
Evitable impurity.
A kind of method for preparing new-energy automobile vacuum booster shell aluminium alloy strips as described above, specific steps
It is as follows：
(1) composition of aluminium alloy strips is pressed, by aluminium alloy stock is smelting, nitrogen injection refining, online degasification remove the gred in stove
Afterwards, the aluminium liquid 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 heat, metal temperature is heated to as 540 DEG C, and be incubated 10h；
(3) ingot blank is first rolled into the thick middle bases of 21mm through hot thick machine after coming out of the stove, then it is thick to 2.5mm by hot finishing mill tandem rolling
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 during annealing in stove, oxygen content 900ppm in stove,
Annealing temperature is 360 DEG C, is taken out after coiled material to warm 4h, air cooling to normal 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 row, 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 warm 5h, wind
It is cooled to normal 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.
Tensile strength through aluminium alloy strips made from this method is 228MPa, and yield strength reaches 108MPa, elongation
For 22.5%, the I of Strip Shape glacing flatness 15, band intercrystalline corrosion speed is 3.165mg/cm2 , anti-strip corrosion class reaches PA
Level.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, it should all belong to the covering scope of the present invention.
Claims (2)
- A kind of 1. new-energy automobile vacuum booster shell aluminium alloy strips, it is characterised in that the aluminium alloy strips into Divide and be as mass fraction：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 be Al and inevitably it is miscellaneous Matter.
- 2. a kind of method for preparing new-energy automobile vacuum booster shell aluminium alloy strips as claimed in claim 1, its It is characterised by, comprises the following steps that：（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, nitrogen injection refining in stove, after line degasification slagging-off, The aluminium liquid 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 heat, heating-up temperature is 480-560 DEG C, and is incubated 4-12h；（3）Ingot blank is first rolled into the thick middle bases of 21-26mm through hot rough rolling mill after coming out of the stove, then passes through hot finishing mill tandem rolling to 2.0- Hot-rolled band thick 3.5mm, hot finishing mill finishing temperature control is at 320-360 DEG C；（4）Hot-rolled band carried out on cold-rolling mill to be cold-rolled to certain thickness, 20-40% finished product is reserved according to finished product thickness Cold processing ratio；（5）Band after cold rolling is subjected to intermediate annealing, fills protection inert gas in stove during annealing, oxygen content is less than in stove 1000ppm, annealing temperature are 320-400 DEG C, are taken out after coiled material to warm 3-6h, air cooling to normal temperature；（6）Aluminum strip after annealing is rolling to finished product thickness on cold-rolling mill；（7）By step（6）The aluminum strip of processing is through the cleaning of stretch bending-straightening machine row, tension straingtening；（8）By step（7）Aluminum strip carries out finished products after processing, and annealing temperature is 280-340 DEG C, is taken after coiled material to warm 2-6h Go out, air cooling to normal temperature；（9）By step（8）Obtained aluminum strip carries out trimming or slitting into required specification on slitter, and it is true that automobile is made Empty 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 CN107739924B (en) | 2019-07-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115341082A (en) * | 2022-08-01 | 2022-11-15 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN115341082A (en) * | 2022-08-01 | 2022-11-15 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
| 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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| CN107739924B (en) | 2019-07-12 |
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