CN103789585A - Aluminium alloy material for car wheel hubs and preparation method thereof - Google Patents
Aluminium alloy material for car wheel hubs and preparation method thereof Download PDFInfo
- Publication number
- CN103789585A CN103789585A CN201410010371.8A CN201410010371A CN103789585A CN 103789585 A CN103789585 A CN 103789585A CN 201410010371 A CN201410010371 A CN 201410010371A CN 103789585 A CN103789585 A CN 103789585A
- Authority
- CN
- China
- Prior art keywords
- aluminium
- aluminium alloy
- wheel hub
- alloy
- aluminum alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Forging (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides an aluminium alloy material for car wheel hubs. The aluminium alloy material comprises the following chemical elements by mass percent: 7.2-7.5% of zinc, 3.6-4.1% of magnesium, 0.2-0.4% of copper, 0.9-1.1% of zirconium, 0.1-0.2% of titanium, 0.4-0.5% of chromium, 0.02-0.05% of scandium, 0.1-0.3% of Be, 0.03-0.05% of La and the balance of aluminium. The aluminium alloy material has the beneficial effects that the ratio of the elements of the aluminium alloy is reasonable; by reasonably controlling the treatment temperature after casting and putting alloy elements in batches, the alloy is uniform in crystallization and has high strength, high impact toughness and high corrosion resistance, and the production cost is reduced while the mechanical performances of the aluminium alloy wheel hubs are ensured; part of waste aluminium is used as the raw material, so that the alloy has more stable and uniform quality; a refining agent is used for casting production, can reduce the porosity in castings by 1-2 degrees, has about two-grade oxide inclusions, and has high yield.
Description
Technical field
The present invention relates to aluminum alloy materials field, relate in particular to a kind of aluminum alloy for automobile wheel hub material and preparation method thereof.
Background technology
The quality of wheel and reliability quality are not only closely related with the safety of vehicle, and with automobile stationarity, comfortableness, safety operation close relation under steam.Thereby require the size and dimension precision of wheel high, and good dynamic balance, fatigue strength is high, perfect heat-dissipating, rigidity and good springiness.Along with the development of automobile, the class of automobile is become better and better, and car speed is more and more faster, and individual requirement is also more and more higher, so also more and more higher to the requirement of automotive hub.
Widely used in China's automobile is conventional aluminium wheel hub, is the entirety forming with die casting, and the shape of product is single, change parameter and the shape of wheel and must change mould; And what conventional cast wheel hub adopted is A356-2 aluminium, A356-2 aluminium, its stability and thermal diffusivity are also poor, and quality is also heavier simultaneously.
In order to solve the problems of the technologies described above, on market, occurred a kind of three-plate aluminum alloy forged hub now, so-called three-chip type wheel hub, is that wheel hub is resolved into anter, middle and rear panel, and then it is combined into a complete wheel hub, but it can meet again the basic parameter of all wheel hubs.This wheel hub is all far superior to conventional cast wheel hub from intensity, quality, thermal diffusivity and profile.
Normal 6 series (aluminium, magnesium, silicon) alloy material that adopts of above-mentioned three-plate aluminum alloy forged hub is produced, but due to the ductility of 6 series (aluminium, magnesium, silicon) alloy material itself not enough, make the retractility of the three-plate aluminum alloy forged hub after producing and automatically fatigue recovery function also do not reach requirement.
Also there are some problems with aluminium alloy in China's wheel hub, as insufficient strength, weight are large, unstable etc. the problem of limited, the casting quality of poor processability, poor radiation, rotten treatment effect, needs further to improve the over-all properties of wheel hub aluminium alloy.
Summary of the invention
The object of the present invention is to provide a kind of aluminum alloy for automobile wheel hub material and preparation method thereof, that this aluminum alloy materials has advantages of is corrosion-resistant, thermal conductivity good, tensile strength is high.
Technical scheme of the present invention is as follows:
A kind of aluminum alloy for automobile wheel hub material, is characterized in that: chemical element composition and mass percent thereof that it contains are: zinc 7.2-7.5, magnesium 3.6-4.1, copper 0.2-0.4, zirconium 0.9-1.1, titanium 0.1-0.2, chromium 0.4-0.5, scandium 0.02-0.05, Be0.1-0.3, La0.03-0.05, surplus are aluminium.
The production method of described aluminum alloy for automobile wheel hub material, is characterized in that:
(1), preparing fine aluminium ingot and aluminium scrap originates as aluminum matrix in 1:0.2-0.5 ratio, fine aluminium ingot is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add aluminium scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) zinc, La, zirconium; (2) magnesium, chromium, Be; (3) other remaining components; The each batch of timed interval of dropping into element is 20-24 minute, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 420-430 ℃ by room temperature with 230-240 ℃/h of speed, insulation 30-40 minute, be cooled to 340-350 ℃ with 230-240 ℃/h of speed again, then be warming up to 540-560 ℃ with 200-220 ℃/h of speed, insulation 6-7 hour; Be cooled to 120-130 ℃ with 70-80 ℃ of clear water, then naturally cool to room temperature; Be warming up to 150-160 ℃ with 200-220 ℃/h of speed again, insulation 3-4 hour, takes out air cooling and get final product.
Described refining agent is made up of the raw material of following weight part: aluminium powder 10-12, silicon-dioxide 8-12, attapulgite 8-12, feldspar in powder 5-8, aluminium vanadine 3-4, medical stone 3-4, lapis amiridis 3-4, aluminium nitride 5-6, trees ashes 1-2, Starso 2-3, Calcium Fluoride (Fluorspan) 3-5; Its preparation method is that silicon-dioxide, attapulgite, feldspar in powder, medical stone, aluminium vanadine, trees ashes are mixed, be heated to 1600-1800 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
Beneficial effect of the present invention
Aluminium alloy element reasonable ratio of the present invention by reasonable control casting post-processing temperature, is thrown in alloying element in batches, makes alloy crystallization even, and intensity is high, high impact toughness, high anti-corrosion, in guaranteeing aluminium alloy wheel hub mechanical property, reduces production costs; Using part aluminium scrap is raw material, makes more stable uniform of alloy quality.Refining agent of the present invention, for Foundry Production, can make the degree of porosity in foundry goods reduce 1-2 degree, and oxide inclusion is 2 grades of left and right, and yield rate is high.
Embodiment
A kind of aluminum alloy for automobile wheel hub material, chemical element composition and mass percent thereof that it contains are: zinc 7.2-7.5, magnesium 3.6-4.1, copper 0.2-0.4, zirconium 0.9-1.1, titanium 0.1-0.2, chromium 0.4-0.5, scandium 0.02-0.05, Be0.1-0.3, La0.03-0.05, surplus are aluminium.
The production method of described aluminum alloy for automobile wheel hub material is:
(1), preparing fine aluminium ingot and aluminium scrap originates as aluminum matrix in 1:0.4 ratio, fine aluminium ingot is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add aluminium scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) zinc, La, zirconium; (2) magnesium, chromium, Be; (3) other remaining components; The each batch of timed interval of dropping into element is 22 minutes, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 425 ℃ by room temperature with 235 ℃/h of speed, be incubated 35 minutes, then be cooled to 345 ℃ with 235 ℃/h of speed, then be warming up to 550 ℃ with 210 ℃/h of speed, be incubated 6.5 hours; Be cooled to 125 ℃ with 75 ℃ of clear water, then naturally cool to room temperature; Be warming up to 155 ℃ with 210 ℃/h of speed again, be incubated 3.5 hours, take out air cooling and get final product.
Described refining agent by following weight part (kilogram) raw material make: aluminium powder 10, silicon-dioxide 8, attapulgite 8, feldspar in powder 5, aluminium vanadine 4, medical stone 4, lapis amiridis 3, aluminium nitride 5, trees ashes 1, Starso 2, Calcium Fluoride (Fluorspan) 5; Its preparation method is that silicon-dioxide, attapulgite, feldspar in powder, medical stone, aluminium vanadine, trees ashes are mixed, be heated to 1600-1800 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
After tested, under room temperature, tensile strength б b is 298Mpa to the present embodiment aluminum alloy for automobile wheel hub material, and the tensile strength under 315 ℃ of conditions is 186MPa, yield strength 268MPa, and hardness value HB is 87, unit elongation δ 5 is 15%.
Claims (3)
1. an aluminum alloy for automobile wheel hub material, is characterized in that: chemical element composition and mass percent thereof that it contains are: zinc 7.2-7.5, magnesium 3.6-4.1, copper 0.2-0.4, zirconium 0.9-1.1, titanium 0.1-0.2, chromium 0.4-0.5, scandium 0.02-0.05, Be0.1-0.3, La0.03-0.05, surplus are aluminium.
2. the production method of aluminum alloy for automobile wheel hub material according to claim 1, is characterized in that:
(1), preparing fine aluminium ingot and aluminium scrap originates as aluminum matrix in 1:0.2-0.5 ratio, fine aluminium ingot is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add aluminium scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) zinc, La, zirconium; (2) magnesium, chromium, Be; (3) other remaining components; The each batch of timed interval of dropping into element is 20-24 minute, after feeding intake, stirs.
3. the production method of aluminum alloy for automobile wheel hub material according to claim 2, it is characterized in that: described casting postheat treatment is: be first warming up to 420-430 ℃ by room temperature with 230-240 ℃/h of speed, insulation 30-40 minute, be cooled to 340-350 ℃ with 230-240 ℃/h of speed again, be warming up to 540-560 ℃ with 200-220 ℃/h of speed again, insulation 6-7 hour; Be cooled to 120-130 ℃ with 70-80 ℃ of clear water, then naturally cool to room temperature; Be warming up to 150-160 ℃ with 200-220 ℃/h of speed again, insulation 3-4 hour, takes out air cooling and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010371.8A CN103789585A (en) | 2014-01-09 | 2014-01-09 | Aluminium alloy material for car wheel hubs and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010371.8A CN103789585A (en) | 2014-01-09 | 2014-01-09 | Aluminium alloy material for car wheel hubs and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103789585A true CN103789585A (en) | 2014-05-14 |
Family
ID=50665635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410010371.8A Pending CN103789585A (en) | 2014-01-09 | 2014-01-09 | Aluminium alloy material for car wheel hubs and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103789585A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855375A (en) * | 2007-11-08 | 2010-10-06 | Ksm铸造有限公司 | Cast aluminium alloy |
| CN102251158A (en) * | 2011-07-09 | 2011-11-23 | 浙江巨科铝业有限公司 | Aluminium alloy for vehicle hub and preparation method thereof |
-
2014
- 2014-01-09 CN CN201410010371.8A patent/CN103789585A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855375A (en) * | 2007-11-08 | 2010-10-06 | Ksm铸造有限公司 | Cast aluminium alloy |
| CN102251158A (en) * | 2011-07-09 | 2011-11-23 | 浙江巨科铝业有限公司 | Aluminium alloy for vehicle hub and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 饶启昌等: "耐磨材料热处理问题的探讨", 《水利电力机械》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103774007A (en) | High-magnesium aluminum alloy material for wheel hubs and preparation method thereof | |
| CN103060635B (en) | Three-sheet aluminum-alloy forged hub material | |
| CN103789582A (en) | Special aluminium-silicon-magnesium alloy material for car wheel hubs and preparation method thereof | |
| CN104611617B (en) | A kind of liquid forging Al-Cu-Zn aluminium alloy and preparation method thereof | |
| CN103966487A (en) | Production technology for aluminium-alloy casting rod special for forging of automobile aluminium-alloy wheel hubs | |
| CN102433475B (en) | High-strength and high-hardness aluminum alloy and preparation method thereof | |
| CN101748301A (en) | Method for manufacturing cast aluminum alloy | |
| CN103966478A (en) | Production technology for aluminium alloy casting rod special for automobile Peugeot hubs | |
| CN103555976A (en) | Aluminum bar smelting and casting process | |
| CN109777986A (en) | A kind of in-situ preparation Mg2The preparation and organization optimization method of Si reinforced aluminum matrix composites | |
| CN101733393A (en) | Method for preparing high-performance aluminum alloy accurate die casting | |
| CN106048332B (en) | Space flight thin-section casting aluminum alloy materials and preparation method thereof | |
| CN103233138B (en) | Mg-Al series magnesium alloy grain-refining agent and preparation method thereof | |
| CN103789577A (en) | High strength and toughness aluminium alloy material for car wheel hubs and preparation method thereof | |
| CN102634700B (en) | Casting aluminum-silicon alloy inoculant, and preparation method and application thereof | |
| CN103773999A (en) | Rare-earth-enhanced aluminum alloy material for wheel hubs and preparation method thereof | |
| CN106048335A (en) | Aluminum alloy material used for aerospace large heavy castings, and preparation method of material | |
| CN103774002A (en) | Wear-resisting aluminium alloy material for hubs and preparation method of material | |
| CN105936990A (en) | Preparation process of aluminum alloy casting used on automobile | |
| CN103774000A (en) | Special forging aluminum alloy material for forged rotary wheel hubs and preparation method thereof | |
| CN102418009B (en) | Aluminum alloy capable of digesting high-hardness compounds and smelting method of aluminum alloy | |
| CN101974704A (en) | Beryllium-cobalt-copper alloy and manufacturing method thereof | |
| CN103774001A (en) | High-impact-toughness aluminum alloy material for hubs and preparation method thereof | |
| CN103774013A (en) | Magnesium alloy material for electromobile wheel hubs and preparation method thereof | |
| CN107604218A (en) | A kind of forging method of aluminium alloy wheel hub |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140514 |
|
| RJ01 | Rejection of invention patent application after publication |