CN105522136A - Low-pressure casting process for automobile wheel - Google Patents
Low-pressure casting process for automobile wheel Download PDFInfo
- Publication number
- CN105522136A CN105522136A CN201610088482.XA CN201610088482A CN105522136A CN 105522136 A CN105522136 A CN 105522136A CN 201610088482 A CN201610088482 A CN 201610088482A CN 105522136 A CN105522136 A CN 105522136A
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- Prior art keywords
- low
- pressure
- mould
- casting process
- casting
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a low-pressure casting process for an automobile wheel. The low-pressure casting process comprises the following steps: a, mould pre-heating: spraying a graphite coating with certain thickness in a mould cavity of a mould, and heating the mould to a temperature of 250 +/-20 DEG C; b, low-pressure casting and forming: starting filling the mould cavity of the mould with an aluminum-nickel alloy solution for 8-12 seconds under pressure of 0.01-0.02MPa, pressurizing the inner part of the mould to 0.04-0.05MPa at a speed of 0.002MPa/s after casting, and maintaining the pressure for 2-3 minutes; and c, releasing pressure and de-molding: releasing pressure after forming a casting piece, and de-molding after the mould is naturally cooled. In this way, the low-pressure casting process is simple and easy to control, a dead head is not required to be arranged in a casting process, and a utilization rate of the aluminum-nickel alloy liquid can be increased; and meanwhile, the aluminum-nickel alloy is crystallized under pressure, so that the casting piece is compact in structure, is good in surface smoothness and is good in mechanical property, and finishing is not required after casting.
Description
Technical field
The present invention relates to casting technology field, particularly relate to a kind of low-pressure casting process of automotive wheel.
Background technology
Automotive wheel varies, and has positive offset distance, negative bias distance, and be all circular casting, wheel rim is uniform wall thickness, and Area comparison is large, and spoke is thicker, spoke and wheel rim junction thermal center all larger.Wheel needs to arrange rising head in casting process, increases the use amount of molten metal, and the front of wheel is decorative cover, and General Requirements is higher, so also need fine finishining after the casting of wheel foundry goods, wheel just can be made to have good surface smoothness.
Summary of the invention
The technical problem that the present invention mainly solves is: for the deficiencies in the prior art, and provide a kind of low-pressure casting process of automotive wheel, technique is simple, without the need to arranging rising head, molten metal utilization rate is high, and the casting quality cast is high, surface smoothness is good, without the need to fine finishining again after casting.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the low-pressure casting process providing a kind of automotive wheel, comprises the steps:
A, mould and die preheating: in mold cavity, spray certain thickness equadag coating, and by mold heated to 250 ± 20 DEG C;
B, low-pressure casting are shaping: alumel solution starts filling mold cavity under the pressure of 0.01-0.02MPa, and loading time is 8-12s, are forced into 0.04-0.05MPa, pressurize 2-3min in casting complete rear mold with the speed of 0.002MPa/s;
C, the release demoulding: the shaping rear release of foundry goods, the demoulding after waiting mould naturally to cool after release.
In a preferred embodiment of the present invention, the thickness of described equadag coating is 25-30 μm.
In a preferred embodiment of the present invention, temperature during described alumel solution filling controls at 560 ± 20 DEG C.
The invention has the beneficial effects as follows: present invention process is simple and easy to control, without the need to arranging rising head in casting process, the utilization rate of alumel liquid can be improved, alumel liquid crystallization under stress simultaneously, make cast structure fine and close, surface smoothness is good, good mechanical property, without the need to fine finishining again after casting.
Detailed description of the invention
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
Embodiment one:
A low-pressure casting process for automotive wheel, comprises the steps:
A, mould and die preheating: the equadag coating at mold cavity inner surface even application thickness being 25 μm, and by mold heated to 230 DEG C;
B, low-pressure casting are shaping: temperature is that the alumel solution of 540 DEG C starts filling mold cavity under the pressure of 0.01MPa, and loading time is 8s, are forced into 0.04MPa, pressurize 2min in casting complete rear mold with the speed of 0.002MPa/s;
C, the release demoulding: the shaping rear release of foundry goods, the demoulding after waiting mould naturally to cool after release.
Embodiment two:
A low-pressure casting process for automotive wheel, comprises the steps:
A, mould and die preheating: the equadag coating at mold cavity inner surface even application thickness being 28 μm, and by mold heated to 250 DEG C;
B, low-pressure casting are shaping: temperature is that the alumel solution of 560 DEG C starts filling mold cavity under the pressure of 0.015MPa, and loading time is 10s, are forced into 0.045MPa, pressurize 2.5min in casting complete rear mold with the speed of 0.002MPa/s;
C, the release demoulding: the shaping rear release of foundry goods, the demoulding after waiting mould naturally to cool after release.
Embodiment three:
A low-pressure casting process for automotive wheel, comprises the steps:
A, mould and die preheating: the equadag coating at mold cavity inner surface even application thickness being 30 μm, and by mold heated to 270 DEG C;
B, low-pressure casting are shaping: temperature is that the alumel solution of 580 DEG C starts filling mold cavity under the pressure of 0.02MPa, and loading time is 12s, are forced into 0.05MPa, pressurize 3min in casting complete rear mold with the speed of 0.002MPa/s;
C, the release demoulding: the shaping rear release of foundry goods, the demoulding after waiting mould naturally to cool after release.
Present invention is disclosed a kind of low-pressure casting process of automotive wheel, technique is simple and easy to control, without the need to arranging rising head in casting process, the utilization rate of alumel liquid can be improved, alumel liquid crystallization under stress simultaneously, make cast structure fine and close, surface smoothness is good, good mechanical property, without the need to fine finishining again after casting.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a low-pressure casting process for automotive wheel, is characterized in that, comprises the steps:
A, mould and die preheating: in mold cavity, spray certain thickness equadag coating, and by mold heated to 250 ± 20 DEG C;
B, low-pressure casting are shaping: alumel solution starts filling mold cavity under the pressure of 0.01-0.02MPa, and loading time is 8-12s, are forced into 0.04-0.05MPa, pressurize 2-3min in casting complete rear mold with the speed of 0.002MPa/s;
C, the release demoulding: the shaping rear release of foundry goods, the demoulding after waiting mould naturally to cool after release.
2. the low-pressure casting process of automotive wheel according to claim 1, is characterized in that, the thickness of described equadag coating is 25-30 μm.
3. the low-pressure casting process of automotive wheel according to claim 1, is characterized in that, temperature during described alumel solution filling controls at 560 ± 20 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610088482.XA CN105522136A (en) | 2016-02-17 | 2016-02-17 | Low-pressure casting process for automobile wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610088482.XA CN105522136A (en) | 2016-02-17 | 2016-02-17 | Low-pressure casting process for automobile wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105522136A true CN105522136A (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610088482.XA Pending CN105522136A (en) | 2016-02-17 | 2016-02-17 | Low-pressure casting process for automobile wheel |
Country Status (1)
| Country | Link |
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| CN (1) | CN105522136A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319332A (en) * | 2016-08-30 | 2017-01-11 | 合肥常青机械股份有限公司 | Empennage support glossy in surface, attractive, free of dark lines and good in mechanical property, and preparation method thereof |
| CN108856679A (en) * | 2018-08-14 | 2018-11-23 | 昆山拓卡家居用品有限公司 | A kind of low-pressure casting method of aluminum alloy car wheel |
| CN114892036A (en) * | 2022-06-24 | 2022-08-12 | 大连亚明汽车部件股份有限公司 | Low-temperature smelting and die-casting process for aluminum-nickel alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3619525C1 (en) * | 1986-06-10 | 1987-08-06 | Alulahn Giesserei Gmbh & Co Kg | Method and apparatus for the production of castings, for example motor vehicle wheels, from aluminium, magnesium and similar light metals in low-pressure casting machines |
| JP2002283035A (en) * | 2001-03-22 | 2002-10-02 | Topy Ind Ltd | Low pressure casting die cooling method, and device thereof |
| CN101966575A (en) * | 2010-11-13 | 2011-02-09 | 河南理工大学 | Process for casting aluminum alloy wheel and heat treatment process |
| CN102366828A (en) * | 2011-10-10 | 2012-03-07 | 陈伟军 | Low-pressure casting method of aluminum alloy automobile hub |
-
2016
- 2016-02-17 CN CN201610088482.XA patent/CN105522136A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3619525C1 (en) * | 1986-06-10 | 1987-08-06 | Alulahn Giesserei Gmbh & Co Kg | Method and apparatus for the production of castings, for example motor vehicle wheels, from aluminium, magnesium and similar light metals in low-pressure casting machines |
| JP2002283035A (en) * | 2001-03-22 | 2002-10-02 | Topy Ind Ltd | Low pressure casting die cooling method, and device thereof |
| CN101966575A (en) * | 2010-11-13 | 2011-02-09 | 河南理工大学 | Process for casting aluminum alloy wheel and heat treatment process |
| CN102366828A (en) * | 2011-10-10 | 2012-03-07 | 陈伟军 | Low-pressure casting method of aluminum alloy automobile hub |
Non-Patent Citations (3)
| Title |
|---|
| 厉衡隆等: "《铝冶炼生产技术手册 下册》", 31 July 2011, 冶金工业出版社 * |
| 彭振国等: "全自动铝合金车轮低压铸造机工艺参数的控制", 《轻合金加工技术》 * |
| 曾诚: "铝合金车轮的制造工艺及设备探析", 《湖南工业职业技术学院学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319332A (en) * | 2016-08-30 | 2017-01-11 | 合肥常青机械股份有限公司 | Empennage support glossy in surface, attractive, free of dark lines and good in mechanical property, and preparation method thereof |
| CN108856679A (en) * | 2018-08-14 | 2018-11-23 | 昆山拓卡家居用品有限公司 | A kind of low-pressure casting method of aluminum alloy car wheel |
| CN114892036A (en) * | 2022-06-24 | 2022-08-12 | 大连亚明汽车部件股份有限公司 | Low-temperature smelting and die-casting process for aluminum-nickel alloy |
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Application publication date: 20160427 |