CN107900312A - A kind of low-pressure casting process of aluminium alloy wheel hub - Google Patents
A kind of low-pressure casting process of aluminium alloy wheel hub Download PDFInfo
- Publication number
- CN107900312A CN107900312A CN201711179872.9A CN201711179872A CN107900312A CN 107900312 A CN107900312 A CN 107900312A CN 201711179872 A CN201711179872 A CN 201711179872A CN 107900312 A CN107900312 A CN 107900312A
- Authority
- CN
- China
- Prior art keywords
- low
- cooled
- pressure casting
- wheel hub
- aluminium 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of low-pressure casting process of aluminium alloy wheel hub, belong to auto parts and components processing technique field, which includes following operating procedure：1) aluminum alloy materials progress melting is obtained into molten aluminum, the temperature of the melting is 750~900 DEG C；2) mould is preheated to 550 DEG C, and keep the temperature 1 it is small when；3) molten aluminum of step 1) is started to come out of the stove at 700~710 DEG C, and through high-purity nitrogen degasification 15 minutes, be transferred to afterwards 670~695 DEG C of insulations 1 of low pressure casting machine holding furnace it is small when；It is forced into 0.04~0.06MPa molten aluminums and carries out a liter liquid into stalk, the liter liquid time is 5~10s；It is forced into 0.08~0.1MPa and is full of mold cavity to molten aluminum, then pressure is adjusted to 0.06~0.07MPa and carries out pressurize, the dwell time is 200~300s.There is the characteristic that high rigidity, tensile strength are strong and elongation percentage high tenacity is good by the aluminium alloy wheel hub that makes of the present invention, and wheel hub is imperfect, shrinkage cavity, hot tearing and situation is few the defects of draw, substantially increase yield rate.
Description
Technical field
The invention belongs to auto parts and components processing technique field, specifically, more particularly to a kind of aluminium alloy wheel hub is low
Press casting technique.
Background technology
With the development of society, automobile has become the indispensable vehicles of people's trip, automotive hub is as automobile
In important accessory, its quality not only influences the beauty of automobile, and can influence the safety of automobile.Aluminium alloy wheel hub is due to tool
There are many advantages such as light-weight, intensity is big, brake compensation performance is good, precision is high, thermal conductivity is good, automobile fuel consumption is low, it is wide
It is general to be applied to automotive hub manufacturing field.
Although the performance of aluminium alloy wheel hub is better than steel wheel hub very much, the difference of al alloy component and casting technique
It is different also make it that the performance gap of aluminium alloy wheel hub is quite big.At present, generally existing magnesium in the main aluminium alloy wheel hub product of in the market,
Iron, Zn content are more, easily occur scaling loss in melting, and texture material is crisp, easy fracture；And silicone content is more, fusing point is low, tensile strength
Requirement is not reached.In order to meet people to automotive hub performance increasingly higher demands, how to improve aluminium alloy wheel hub intensity,
Hardness and plasticity etc. also become the new challenge of aluminium alloy wheel hub exploitation.
The production of aluminum current alloy cast product is more use low-pressure casting process, and low pressure casting is with die cost is low, the service life
The advantages that long, general technology flow are：Aluminium bar is melted into molten aluminum on insulation barrel first；Then it is passed through dry compressed gas
Body, makes the molten aluminum of thawing enter under low pressure in mold cavity, and is full of cavity；Finally etc. by casting top after molten aluminum coagulation forming
Go out.But low pressure casting production casting hardness it is low, compactness is poor, tensile strength it is small it is low with elongation percentage be also low pressure casting it is obvious
Shortcoming.Therefore, this area still needs to a kind of aluminium alloy wheel hub that can improve aluminium alloy wheel hub hardness, tensile strength and elongation percentage
Casting technique.
The content of the invention
It is an object of the invention to overcome the defects of existing aluminium alloy wheel hub manufacturing process, there is provided a kind of aluminum alloy wheel
The low-pressure casting process of hub, the casting technique can effectively improve the property such as hardness, tensile strength and elongation percentage of aluminium alloy wheel hub
Energy.
To achieve the above object, the present invention uses following technical scheme：
A kind of low-pressure casting process of aluminium alloy wheel hub, comprises the following steps：
1) aluminum alloy materials progress melting is obtained into molten aluminum, the percentage by weight of molten aluminum main ingredient is Si6.8~7.2,
Mg4.5~5, Ti0.1~0.15, the Al of Fe0.05~0.1 and surplus, the temperature of the melting is 750~900 DEG C；
2) mould is preheated to 550 DEG C, and keep the temperature 1 it is small when；
3) molten aluminum of step 1) is started to come out of the stove at 700~710 DEG C, and through high-purity nitrogen degasification 15 minutes, Zhi Houzhuan
Enter 670~695 DEG C of low pressure casting machine holding furnace insulation 1 it is small when；0.04~0.06MPa molten aluminums are forced into be risen into stalk
Liquid, liter liquid time are 5~10s；It is forced into 0.08~0.1MPa and is full of mold cavity to molten aluminum, then adjusts pressure to 0.06
~0.07MPa carries out pressurize, and the dwell time is 200~300s.
Further, in step 3), be transferred to 650 DEG C of low pressure casting machine holding furnace insulation 1 it is small when.
Further, in step 3), 0.04MPa molten aluminums is forced into and carry out a liter liquid into stalk.
Further, in step 3), 0.09MPa is forced into molten aluminum and is full of mold cavity.
Further, in step 3), pressure adjusts to 0.07MPa and carries out pressurize.
Further, low-pressure casting process further includes step 4)：Treat that molten aluminum is full of mold cavity, the lower die of mould is with 1.5
The speed of~2 DEG C/s carries out being cooled to 350 DEG C, is then cooled to 250 DEG C again with the speed of 0.4~0.7 DEG C/s, then be air-cooled to room
Temperature；The side mould of mould is cooled to 400 DEG C with the speed of 0.8~1.2 DEG C/s, is then cooled to the speed of 0.5~0.7 DEG C/s
300 DEG C, then it is air-cooled to room temperature；The upper mold of mould is cooled to 420 DEG C with the speed of 0.6~0.8 DEG C/s, then with 0.3~0.5
DEG C/speed of s is cooled to 300 DEG C, then is air-cooled to room temperature.
Further, the method for cooling is to apply cooling medium to the corresponding outside of mould, and the cooling medium is compression
Air.
Compared with prior art, the beneficial effects of the invention are as follows：
The aluminium alloy wheel hub obtained by the technique of the present invention, its hardness, tensile strength and elongation percentage significantly improve；Pass through
The aluminium alloy wheel hub that the technique of the present invention obtains is not in the defects of filling imperfect type, shrinkage cavity, hot tearing and draw, to effectively improve
Finished product excellent rate.
Embodiment
Below by specific embodiment, the invention will be further described.
Embodiment 1：
A kind of low-pressure casting process of aluminium alloy wheel hub, comprises the following steps：
1) aluminum alloy materials progress melting is obtained into molten aluminum, the percentage by weight of molten aluminum main ingredient is Si7.1, Mg4.9,
The Al of Ti0.13, Fe0.05 and surplus, the temperature of the melting is 850 DEG C；
2) mould is preheated to 550 DEG C, and keep the temperature 1 it is small when；
3) molten aluminum of step 1) is started to come out of the stove at 710 DEG C, and through high-purity nitrogen degasification 15 minutes, is transferred to low pressure afterwards
When the 650 DEG C of insulations 1 of casting machine holding furnace are small；Be forced into 0.04Mpa molten aluminums and carry out a liter liquid into stalk, rise the liquid time for 5~
10s；It is forced into 0.09Mpa and is full of mold cavity to molten aluminum, then pressure is adjusted to 0.07Mpa and carries out pressurize, dwell time
For 280s.
4)：Treat that molten aluminum is full of mold cavity, the lower die of mould carries out being cooled to 350 DEG C with the speed of 2 DEG C/s, then again with
The speed of 0.4 DEG C/s is cooled to 250 DEG C, then is air-cooled to room temperature；The side mould of mould is cooled to 410 DEG C with the speed of 1 DEG C/s, then
300 DEG C are cooled to the speed of 0.7 DEG C/s, then is air-cooled to room temperature；The upper mold of mould is cooled to 400 DEG C with the speed of 0.8 DEG C/s,
Then 300 DEG C are cooled to the speed of 0.3 DEG C/s, then are air-cooled to room temperature.The method of cooling is to apply to the corresponding outside of mould
Compressed air.
Embodiment 2：
A kind of low-pressure casting process of aluminium alloy wheel hub, comprises the following steps：
1) aluminum alloy materials progress melting is obtained into molten aluminum, the percentage by weight of molten aluminum main ingredient is Si6.8, Mg4.5,
The Al of Ti0.15, Fe0.08 and surplus, the temperature of the melting is 900 DEG C；
2) mould is preheated to 550 DEG C, and keep the temperature 1 it is small when；
3) molten aluminum of step 1) is started to come out of the stove at 700 DEG C, and through high-purity nitrogen degasification 15 minutes, is transferred to low pressure afterwards
When the 650 DEG C of insulations 1 of casting machine holding furnace are small；Be forced into 0.06Mpa molten aluminums and carry out a liter liquid into stalk, rise the liquid time for 5~
10s；It is forced into 0.1Mpa and is full of mold cavity to molten aluminum, then pressure is adjusted to 0.06Mpa and carries out pressurize, the dwell time is
300s。
4)：Treat that molten aluminum is full of mold cavity, the lower die of mould carries out being cooled to 350 DEG C with the speed of 1.5 DEG C/s, Ran Houzai
250 DEG C are cooled to the speed of 0.7 DEG C/s, then is air-cooled to room temperature；The side mould of mould is cooled to 400 DEG C with the speed of 1.2 DEG C/s,
Then 300 DEG C are cooled to the speed of 0.5 DEG C/s, then are air-cooled to room temperature；The upper mold of mould is cooled to the speed of 0.8 DEG C/s
420 DEG C, 300 DEG C then are cooled to the speed of 0.4 DEG C/s, then be air-cooled to room temperature.The method of cooling is outer accordingly to mould
Face applies compressed air.
Embodiment 3：
A kind of low-pressure casting process of aluminium alloy wheel hub, comprises the following steps：
1) aluminum alloy materials progress melting is obtained into molten aluminum, the percentage by weight of molten aluminum main ingredient is Si7, Mg4.5,
The Al of Ti0.14, Fe0.07 and surplus, the temperature of the melting is 800 DEG C；
2) mould is preheated to 550 DEG C, and keep the temperature 1 it is small when；
3) molten aluminum of step 1) is started to come out of the stove at 710 DEG C, and through high-purity nitrogen degasification 15 minutes, is transferred to low pressure afterwards
When the 650 DEG C of insulations 1 of casting machine holding furnace are small；Be forced into 0.05Mpa molten aluminums and carry out a liter liquid into stalk, rise the liquid time for 5~
10s；It is forced into 0.1Mpa and is full of mold cavity to molten aluminum, then pressure is adjusted to 0.06Mpa and carries out pressurize, the dwell time is
280s。
4) treat that molten aluminum is full of mold cavity, the lower die of mould carries out being cooled to 350 DEG C with the speed of 1.5 DEG C/s, Ran Houzai
250 DEG C are cooled to the speed of 0.6 DEG C/s, then is air-cooled to room temperature；The side mould of mould is cooled to 400 DEG C with the speed of 0.8 DEG C/s,
Then 300 DEG C are cooled to the speed of 0.5 DEG C/s, then are air-cooled to room temperature；The upper mold of mould is cooled to the speed of 0.6 DEG C/s
420 DEG C, 300 DEG C then are cooled to the speed of 0.5 DEG C/s, then be air-cooled to room temperature.The method of cooling is outer accordingly to mould
Face applies compressed air.
Embodiment 4：
Such as the low-pressure casting process of the aluminium alloy wheel hub in embodiment 1, the difference is that in step 4), treat that molten aluminum is filled
Full mold cavity, lower mould, Bian Mo, upper mold are cooled down with 2 DEG C/s speed.
Embodiment 5：
Such as the low-pressure casting process of the aluminium alloy wheel hub in embodiment 1, the difference is that in step 4), treat that molten aluminum is filled
Full mold cavity, lower mould is cooled to room temperature with 2 DEG C/s speed, side mould is cooled to room temperature with 1 DEG C/s speed, upper mold with
0.8 DEG C/s speed cools down.
The present invention is described by embodiment, but is not limited the invention, with reference to description of the invention, institute
Other changes of disclosed embodiment, are such as readily apparent that, such change should belong to for the professional person of this area
Within the scope of the claims in the present invention limit.
Claims (7)
- A kind of 1. low-pressure casting process of aluminium alloy wheel hub, it is characterised in that：Comprise the following steps：1) aluminum alloy materials progress melting is obtained into molten aluminum, the percentage by weight of molten aluminum main ingredient is Si 6.8~7.2, Mg 4.5~5, the Al of Ti 0.1~0.15, Fe 0.05~0.1 and surplus, the temperature of the melting is 750~900 DEG C；2) mould is preheated to 550 DEG C, and keep the temperature 1 it is small when；3) molten aluminum of step 1) is started to come out of the stove at 700~710 DEG C, and through high-purity nitrogen degasification 15 minutes, be transferred to afterwards low When 670~695 DEG C of insulations 1 of pressure casting machine holding furnace are small；It is forced into 0.04~0.06MPa molten aluminums and carries out a liter liquid into stalk, It is 5~10s to rise the liquid time；It is forced into 0.08~0.1MPa and is full of mold cavity to molten aluminum, then adjust pressure to 0.06~ 0.07MPa carries out pressurize, and the dwell time is 200~300s.
- 2. the low-pressure casting process of aluminium alloy wheel hub according to claim 1, it is characterised in that：In step 3), it is transferred to When 650 DEG C of insulations 1 of low pressure casting machine holding furnace are small.
- 3. the low-pressure casting process of aluminium alloy wheel hub according to claim 1, it is characterised in that：In step 3), pressurization A liter liquid is carried out to 0.04MPa molten aluminums into stalk.
- 4. the low-pressure casting process of aluminium alloy wheel hub according to claim 1, it is characterised in that：In step 3), pressurization Mold cavity is full of to 0.09MPa to molten aluminum.
- 5. the low-pressure casting process of aluminium alloy wheel hub according to claim 1, it is characterised in that：In step 3), pressure Adjust to 0.07MPa and carry out pressurize.
- 6. the low-pressure casting process of aluminium alloy wheel hub according to claim 1, it is characterised in that：Low-pressure casting process also wraps Include step 4)：Treat that molten aluminum is full of mold cavity, the lower die of mould carries out being cooled to 350 DEG C with the speed of 1.5~2 DEG C/s, then 250 DEG C are cooled to the speed of 0.4~0.7 DEG C/s again, then is air-cooled to room temperature；The side mould of mould is with the speed of 0.8~1.2 DEG C/s 400 DEG C are cooled to, is then cooled to 300 DEG C with the speed of 0.5~0.7 DEG C/s, then be air-cooled to room temperature；The upper mold of mould is with 0.6 The speed of~0.8 DEG C/s is cooled to 420 DEG C, is then cooled to 300 DEG C with the speed of 0.3~0.5 DEG C/s, then be air-cooled to room temperature.
- 7. according to the low-pressure casting process of claim 1-6 any one of them aluminium alloy wheel hubs, it is characterised in that：The side of cooling Method is to apply cooling medium to the corresponding outside of mould, and the cooling medium is compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711179872.9A CN107900312A (en) | 2017-11-23 | 2017-11-23 | A kind of low-pressure casting process of aluminium alloy wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711179872.9A CN107900312A (en) | 2017-11-23 | 2017-11-23 | A kind of low-pressure casting process of aluminium alloy wheel hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107900312A true CN107900312A (en) | 2018-04-13 |
Family
ID=61847253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711179872.9A Pending CN107900312A (en) | 2017-11-23 | 2017-11-23 | A kind of low-pressure casting process of aluminium alloy wheel hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107900312A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843404A (en) * | 2021-10-22 | 2021-12-28 | 台山市天丞汽车配件有限公司 | Casting method of hub |
| CN113909454A (en) * | 2021-10-09 | 2022-01-11 | 大冶市东晟机械制造有限公司 | Low-pressure casting process for rear hub of alloy automobile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837443A (en) * | 2010-02-04 | 2010-09-22 | 保定市立中车轮制造有限公司 | Low-pressure casting process and device for aluminum alloy wheel by bilateral pouring |
| CN106086546A (en) * | 2016-08-26 | 2016-11-09 | 山东金马汽车装备科技有限公司 | The low-pressure casting process of aluminium alloy wheel hub |
| CN106274279A (en) * | 2016-08-30 | 2017-01-04 | 山东金马汽车装备科技有限公司 | A kind of aluminium alloy automobile hub and preparation method thereof |
-
2017
- 2017-11-23 CN CN201711179872.9A patent/CN107900312A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837443A (en) * | 2010-02-04 | 2010-09-22 | 保定市立中车轮制造有限公司 | Low-pressure casting process and device for aluminum alloy wheel by bilateral pouring |
| CN106086546A (en) * | 2016-08-26 | 2016-11-09 | 山东金马汽车装备科技有限公司 | The low-pressure casting process of aluminium alloy wheel hub |
| CN106274279A (en) * | 2016-08-30 | 2017-01-04 | 山东金马汽车装备科技有限公司 | A kind of aluminium alloy automobile hub and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909454A (en) * | 2021-10-09 | 2022-01-11 | 大冶市东晟机械制造有限公司 | Low-pressure casting process for rear hub of alloy automobile |
| CN113843404A (en) * | 2021-10-22 | 2021-12-28 | 台山市天丞汽车配件有限公司 | Casting method of hub |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106086546B (en) | The low-pressure casting process of aluminium alloy wheel hub | |
| CN107760897A (en) | To hydrogenate method of the titanium sponge as raw material manufacture titanium and titanium alloy and its parts | |
| CN102909385B (en) | Preparation method of powder metallurgy tool and mould steel | |
| CN101598585B (en) | Preparation method of aluminum-alloy gas meter end cover | |
| CN101244454B (en) | Precision casting method of metal mold bottom drain vacuum suction casting titanium base alloy | |
| CN102962425B (en) | Preparation method of oblique oil cylinder body | |
| CN105525157A (en) | Aluminum alloy automobile hub casting process | |
| CN107312987A (en) | A kind of forging method of aluminium alloy wheel hub | |
| CN108624767A (en) | A kind of aluminium alloy wheel hub manufacturing method | |
| CN103381479A (en) | Method for manufacturing aluminium hub of large bus | |
| CN104999052A (en) | Low-pressure casting method of aluminum alloy hubs | |
| CN107900312A (en) | A kind of low-pressure casting process of aluminium alloy wheel hub | |
| CN110142393A (en) | Liquid forging microlight-type wheel disc assembly forming process and mold and system | |
| CN106884129A (en) | A kind of Technology for Heating Processing for extrusion casint aluminium alloy knuckle | |
| CN102676855A (en) | Method for preparing high magnesium aluminium alloy ingot used for forging hubs | |
| CN102814486A (en) | Manufacturing method for cylinder head of all-terrain vehicle engine | |
| CN106475566A (en) | The manufacture method of molybdenum titanium target base | |
| CN107088657A (en) | A kind of preparation method of the ultra-wide aluminium alloy sheet based on the metallurgical silumin of Rapid Solidification Powder | |
| CN104674032A (en) | Method of preparing aluminum alloy wheel hub with high structural strength | |
| CN105886817B (en) | A kind of automobile cylinder lid processing technology | |
| CN106424494A (en) | Extrusion production technology for coarse grain zone-free forging blank for knuckle forge piece of saloon car | |
| WO2020052528A1 (en) | Method for producing high-strength near-net-shaped metal part | |
| CN102689153B (en) | Liquid die forging/rolling composite forming method for magnesium alloy irregular-section large-size ring piece | |
| CN104109791A (en) | Die casting technique of magnesium-aluminum-zinc alloy | |
| CN103624216B (en) | The manufacture method of piston inner-cooling oil recess salt core prefabricated component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180413 |