CN105525160A - Aluminum alloy ingot for automobile hub and preparation method of aluminum alloy ingot - Google Patents
Aluminum alloy ingot for automobile hub and preparation method of aluminum alloy ingot Download PDFInfo
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- CN105525160A CN105525160A CN201510954011.8A CN201510954011A CN105525160A CN 105525160 A CN105525160 A CN 105525160A CN 201510954011 A CN201510954011 A CN 201510954011A CN 105525160 A CN105525160 A CN 105525160A
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- aluminum alloy
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- aluminium alloy
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
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- 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
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses an aluminum alloy ingot for an automobile hub. The aluminum alloy ingot for the automobile hub comprises, by mass, 1.0%-1.6% of Si, 0.05%-0.2% of Mn, 1.0%-1.6% of Mg, 0.1%-0.15% of Cu, 0.1%-0.3% of Zn, 0.3%-0.8% of Ti, 0.04%-0.06% of Nd, 0.08%-0.15% of Ce, 0.05%-0.09% of B, 0.02%-0.05% of Ni, at most 0.5% of impurity elements of other metals and nonmetals, and the balance Al. A preparation method of the aluminum alloy ingot comprises the steps of melting, refining, standing and casting. The rare earth element is added into the aluminum alloy ingot so as to play the modification and refining functions for an aluminum alloy structure, and therefore the mechanical property of the aluminum alloy is improved, and a guarantee is provided for improving the mechanical property of the aluminum alloy hub.
Description
Technical field
The present invention relates to aluminum alloy ingot manufacture field, particularly forge aluminum alloy for automobile wheel hub ingot and preparation method thereof.
Background technology
Along with the fast development of automotive industry, the application of aluminium alloy wheel hub is more and more general.Aluminium alloy wheel hub has following advantage: (1) rapid heat dissipation; Car is when running at high speed, tire and ground friction can produce higher temperature, retarding disc and brake(-holder) block friction also can produce higher temperature, when 20 degree Celsius, the thermal conductivity of aluminium alloy is 3 times of steel, aluminium alloy wheel hub can reduce quickly because of braking (the fricative heat between brake rubber block and brake flange) and with pavement friction and the tyre temperature that produces, the heat that tire and retarding disc produce is transmitted to rapidly in air and goes; (2) lightweight; Aluminium density ratio steel are little, and aluminium alloy wheel hub is lighter than the steel wheel hub with size, and due to hub weight light, rotational inertia is little, and the acceleration characteristics of automobile is improved, and braking quality is improved equally, more can reduce oil consumption after promoting car acceleration capacity; (3) specific tenacity is large; Same weight, aluminium alloy wheel hub wants much sturdy and durable, same intensity, and aluminium alloy wheel hub is light; Every intensity such as aluminium alloy wheel hub impact resistance, tension stress and heating power comparatively steel hub go even farther, the distortion of wheel hub when the high rigidity of aluminium alloy wheel hub significantly reduces turning; (4) comfortableness is good; Aluminum alloy car wheel is accurate cast member, and precision machined surface reaches 80 ~ 90%, lose circularity and degree of unbalancedness very little, particularly the modulus of elasticity of aluminium alloy is less, good anti-vibration, can reduce the body vibrations in traveling; In addition, aluminium alloy wheel hub has the metallic character absorbing vibration and lifting force; Light wheel hub also can promote the comfortableness of the road surface running vehicle that jolts, and when uneven road surface travels, the parts spring below suspension is less, and the earth-catching property of tire improves greatly, turns to also thus more accurate.But aluminum wheel hub also has some defects, such as: aluminium alloy is more crisp, be easy to occur crackle, and be not easily found.For improving the mechanical property of aluminium alloy wheel hub, start with from aluminum alloy materials particularly crucial.
At present, what cast aluminium alloy wheel hub generally adopted is A356 aluminium, and is disposable casting when producing aluminium alloy wheel hub, and do not reprocess, the internal organizational structure of metal does not change, and there is the problem that mechanical property is lower.
Summary of the invention
The invention provides aluminum alloy for automobile wheel hub ingot and preparation method thereof, rotten and thinning processing have been carried out, for the mechanical property improving aluminium alloy wheel hub provides guarantee to the aluminum alloy materials that aluminium alloy wheel hub adopts.
For achieving the above object, technical scheme of the present invention is:
A kind of aluminum alloy for automobile wheel hub ingot, the mass percent of each composition is respectively: Si1.0 ~ 1.6%, Mn0.05 ~ 0.2%, Mg1.0 ~ 1.6%, Cu0.1 ~ 0.15%, Zn0.1 ~ 0.3%, Ti0.3 ~ 0.8%, Nd0.04 ~ 0.06%, Ce0.08 ~ 0.15%, B0.05 ~ 0.09%, Ni0.02 ~ 0.05%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
Preferably, in described aluminum alloy ingot, the mass percent of each composition is respectively: Si1.3%, Mn0.12%, Mg1.3%, Cu0.12%, Zn0.2%, Ti0.5%, Nd0.05%, Ce0.11%, B0.07%, Ni0.03%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
The preparation method of aluminum alloy for automobile wheel hub ingot, comprises the following steps:
(1) melt: aluminum feedstock and magnesium, silicon composition and insulating covering agent are melted to 700 ~ 720 DEG C in smelting furnace, then other alloying constituents except aluminium, magnesium, silicon are added, continue to be warming up to 740 ~ 750 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 720 ~ 730 DEG C, adds refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out further refinery by de-gassing, skim after refining;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) ingot casting: the molten aluminium alloy after step (3) process is carried out shape casting by casting machine, in castingprocesses, casting speed controls at 70 ~ 75mm/min, water pressure of cooling water controls at 0.09 ~ 0.14MPa, is finally cast as diameter and is 45 ~ 55cm, is highly the aluminum alloy ingot finished product of 25 ~ 30cm.
Aluminum alloy ingot of the present invention, Ti, Nd, Ce element is added in the process of casting, and be aided with the synergy of other elements such as Si, Mn, Mg, B, Ni, rotten and refining effect can be played to aluminum alloy organization, make the average grain size at each position of aluminum alloy organization more tiny, distribute evenly each, above-mentioned aluminum alloy ingot is used for cast aluminium alloy wheel hub, the tensile strength of gained wheel hub, yield strength and unit elongation are all significantly improved relative to traditional aluminum alloy wheel hub material, substantially improve the mechanical property of aluminium alloy wheel hub.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention and range of application are not limited to following examples:
Embodiment 1
Aluminum alloy for automobile wheel hub ingot, the mass percent of each composition is respectively: Si1.3%, Mn0.12%, Mg1.3%, Cu0.12%, Zn0.2%, Ti0.5%, Nd0.05%, Ce0.11%, B0.07%, Ni0.03%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
The preparation method of above-mentioned aluminum alloy for automobile wheel hub ingot, comprises the following steps:
(1) melt: aluminum feedstock and magnesium, silicon composition and insulating covering agent are melted to 700 ~ 720 DEG C in smelting furnace, then other alloying constituents except aluminium, magnesium, silicon are added, continue to be warming up to 740 ~ 750 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 720 ~ 730 DEG C, adds refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out further refinery by de-gassing, skim after refining;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) ingot casting: the molten aluminium alloy after step (3) process is carried out shape casting by casting machine, in castingprocesses, casting speed controls at 70 ~ 75mm/min, water pressure of cooling water controls at 0.09 ~ 0.14MPa, is finally cast as diameter and is 45 ~ 55cm, is highly the aluminum alloy ingot finished product of 25 ~ 30cm.
Adopt above-mentioned aluminum alloy ingot, manufacture aluminium alloy wheel hub by the low pressure casting method of routine, the aluminium alloy wheel hub finished product obtained, Main Mechanical is at ambient temperature: tensile strength is 389MPa, and yield strength is 330MPa, and unit elongation is 14.9%.Embodiment 2
Aluminum alloy for automobile wheel hub ingot, the mass percent of each composition is respectively Si1.0%, Mn0.05%, Mg1.0%, Cu0.1%, Zn0.1 ~ 0.3%, Ti0.3%, Nd0.04%, Ce0.08%, B0.05%, Ni0.02%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
The preparation method of above-mentioned aluminum alloy for automobile wheel hub ingot, comprises the following steps:
(1) melt: aluminum feedstock and magnesium, silicon composition and insulating covering agent are melted to 700 ~ 720 DEG C in smelting furnace, then other alloying constituents except aluminium, magnesium, silicon are added, continue to be warming up to 740 ~ 750 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 720 ~ 730 DEG C, adds refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out further refinery by de-gassing, skim after refining;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) ingot casting: the molten aluminium alloy after step (3) process is carried out shape casting by casting machine, in castingprocesses, casting speed controls at 70 ~ 75mm/min, water pressure of cooling water controls at 0.09 ~ 0.14MPa, is finally cast as diameter and is 45 ~ 55cm, is highly the aluminum alloy ingot finished product of 25 ~ 30cm.
Adopt above-mentioned aluminum alloy ingot, manufacture aluminium alloy wheel hub by the low pressure casting method of routine, the aluminium alloy wheel hub finished product obtained, Main Mechanical is at ambient temperature: tensile strength is 338MPa, and yield strength is 289MPa, and unit elongation is 13.7%.Embodiment 3
Aluminum alloy for automobile wheel hub ingot, the mass percent of each composition is respectively: Si1.6%, Mn0.2%, Mg1.6%, Cu0.15%, Zn0.3%, Ti0.8%, Nd0.06%, Ce0.15%, B0.09%, Ni0.05%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
The preparation method of above-mentioned aluminum alloy for automobile wheel hub ingot, comprises the following steps:
(1) melt: aluminum feedstock and magnesium, silicon composition and insulating covering agent are melted to 700 ~ 720 DEG C in smelting furnace, then other alloying constituents except aluminium, magnesium, silicon are added, continue to be warming up to 740 ~ 750 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 720 ~ 730 DEG C, adds refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out further refinery by de-gassing, skim after refining;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) ingot casting: the molten aluminium alloy after step (3) process is carried out shape casting by casting machine, in castingprocesses, casting speed controls at 70 ~ 75mm/min, water pressure of cooling water controls at 0.09 ~ 0.14MPa, is finally cast as diameter and is 45 ~ 55cm, is highly the aluminum alloy ingot finished product of 25 ~ 30cm.
Adopt above-mentioned aluminum alloy ingot, manufacture aluminium alloy wheel hub by the low pressure casting method of routine, the aluminium alloy wheel hub finished product obtained, Main Mechanical is at ambient temperature: tensile strength is 387MPa, and yield strength is 328MPa, and unit elongation is 14.8%.
Claims (3)
1. an aluminum alloy for automobile wheel hub ingot, is characterized in that:
In described aluminum alloy ingot, the mass percent of each composition is respectively: Si1.0 ~ 1.6%, Mn0.05 ~ 0.2%, Mg1.0 ~ 1.6%, Cu0.1 ~ 0.15%, Zn0.1 ~ 0.3%, Ti0.3 ~ 0.8%, Nd0.04 ~ 0.06%, Ce0.08 ~ 0.15%, B0.05 ~ 0.09%, Ni0.02 ~ 0.05%, other metals and nonmetallic impurity element total amount are no more than 0.5%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
2. aluminum alloy for automobile wheel hub ingot according to claim 1, is characterized in that:
In described aluminum alloy ingot, the mass percent of each composition is respectively: Si1.3%, Mn0.12%, Mg1.3%, Cu0.12%, Zn0.2%, Ti0.5%, Nd0.05%, Ce0.11%, B0.07%, Ni0.03%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
3. the preparation method of aluminum alloy for automobile wheel hub ingot according to claim 1 and 2, is characterized in that comprising the following steps:
(1) melt: aluminum feedstock and magnesium, silicon composition and insulating covering agent are melted to 700 ~ 720 DEG C in smelting furnace, then other alloying constituents except aluminium, magnesium, silicon are added, continue to be warming up to 740 ~ 750 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 720 ~ 730 DEG C, adds refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out further refinery by de-gassing, skim after refining;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) ingot casting: the molten aluminium alloy after step (3) process is carried out shape casting by casting machine, in castingprocesses, casting speed controls at 70 ~ 75mm/min, water pressure of cooling water controls at 0.09 ~ 0.14MPa, is finally cast as diameter and is 45 ~ 55cm, is highly the aluminum alloy ingot finished product of 25 ~ 30cm.
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| CN201510954011.8A CN105525160B (en) | 2015-12-18 | 2015-12-18 | Aluminum alloy for automobile wheel hub ingot and preparation method thereof |
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| CN201510954011.8A CN105525160B (en) | 2015-12-18 | 2015-12-18 | Aluminum alloy for automobile wheel hub ingot and preparation method thereof |
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| CN105525160B CN105525160B (en) | 2018-08-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861894A (en) * | 2016-05-20 | 2016-08-17 | 淮安和通汽车零部件有限公司 | 6401A aluminum alloy and preparation method thereof |
| CN108441719A (en) * | 2018-04-11 | 2018-08-24 | 益阳仪纬科技有限公司 | Aluminum alloy for automobile wheel hub casting rod and preparation method thereof |
| CN112921217A (en) * | 2021-01-26 | 2021-06-08 | 佛山职业技术学院 | Aluminum alloy material and preparation method of aluminum alloy wheel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861894A (en) * | 2016-05-20 | 2016-08-17 | 淮安和通汽车零部件有限公司 | 6401A aluminum alloy and preparation method thereof |
| CN108441719A (en) * | 2018-04-11 | 2018-08-24 | 益阳仪纬科技有限公司 | Aluminum alloy for automobile wheel hub casting rod and preparation method thereof |
| CN112921217A (en) * | 2021-01-26 | 2021-06-08 | 佛山职业技术学院 | Aluminum alloy material and preparation method of aluminum alloy wheel |
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