CN104289696A - Engine aluminum cylinder body low-pressure casting method - Google Patents
Engine aluminum cylinder body low-pressure casting method Download PDFInfo
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- CN104289696A CN104289696A CN201310304558.4A CN201310304558A CN104289696A CN 104289696 A CN104289696 A CN 104289696A CN 201310304558 A CN201310304558 A CN 201310304558A CN 104289696 A CN104289696 A CN 104289696A
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- pressure casting
- low
- aluminium liquid
- aluminum cylinder
- casting method
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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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an engine aluminum cylinder body low-pressure casting method. Casting of an engine aluminum cylinder body is achieved through core manufacturing, molten aluminum processing and low-pressure casting. Compared with high-pressure casting having the defects that casting inner air holes can be generated easily, the organization is loose and insufficient casting exists, low-pressure casting has the advantages that the casting technology parameters of low-pressure casting can be adjusted at will within any technological range, it can be guaranteed that liquid metal is stable in model filling, the writhe, the impact and the splashing caused in the model filling process of the molten metal can be reduced or avoided, and therefore less oxidizing slag is formed, the defects of castings are avoided or reduced, and the quality of the castings is improved; model filling can be performed on the molten metal under the action of pressure, the fluidity of the molten metal can be improved, the forming performance of the castings is good, the castings with the contours clear and the surface smooth and clean can be formed easily, and large thin-wall castings can be formed more easily.
Description
Technical field
The present invention relates to a kind of engine aluminum method for casting cylinder body, belong to casting technology field, particularly a kind of engine aluminum cylinder low-pressure casting method.
Background technology
At present, cylinder block casting is the sophisticated technology that domestic casting industry is generally acknowledged, the structure of engine aluminum cylinder body complexity, Wall-Thickness Difference are comparatively large, the feature of castingin Cast iron liner and closed-up water nested structure, cause this product still can not produce at home and meet performance requirement cast aluminium cylinder block, and very easily have the defect such as pore, shrinkage porosite in producing.Due to one of vital part that cylinder block is engine, aluminium alloy engine is again one of light-weighted important symbol of automobile engine, the quality of quality directly has influence on overall performance and the service life of engine, and therefore the manufacture of each manufactory to cylinder is paid special attention to.Wherein 1.9L cylinder block is the core part of 1.9L type aluminium alloy engine, and gross weight is about 32Kg, easily produces the defects such as foundry goods inner air vent, tissue looseness and misrun during current production.
Summary of the invention
The present invention is in order to make up above-mentioned deficiency, and the invention provides a kind of engine aluminum cylinder low-pressure casting method that Product processing qualification rate is high, productivity effect is high, product hardness is high and simple to operate, to achieve these goals, technical scheme of the present invention is as follows:
A kind of engine aluminum cylinder low-pressure casting method, comprise coremaking, the process of aluminium liquid and low pressure casting successively, wherein said aluminium liquid process comprises the following steps:
1) melt: materials A C4B is at high temperature melted;
2) aluminium liquid refinery by de-gassing: carry out refinery by de-gassing process by degassing refining agent;
3) scarfing cinder: the aluminium liquid after refining is extracted and carries out scarfing cinder;
4) static: with coverture, aluminium liquid and air to be isolated, then clean out aluminium liquid;
Described low pressure casting comprises the steps:
A) mould pretreatment: heat to mould and cylinder sleeve, installs the core after infiltration and cylinder sleeve simultaneously;
B) matched moulds: carry out matched moulds to mould by equipment, makes the aluminium liquid after process pour into simultaneously;
C) pressurize: by exerting pressure to inner chamber of cylinder block, and pressurize is carried out to inner chamber;
D) solidify: after product fills type, then solidify;
E) die sinking: by equipment, die sinking is carried out to mould after solidifying;
F) complete.
In above-mentioned: in the step 1) of aluminium liquid process, materials A C4B is that 710-730 degree high temperature melts by temperature.
In above-mentioned: in the step a of low pressure casting, after heating to mould, make mold temperature remain on 250-350 degree, after heating to cylinder sleeve, make cylinder sleeve temperature remain on 400-500 degree.
In above-mentioned: in the step c of low pressure casting, in pressurize, the pressure of inner chamber of cylinder block is made to remain on 0.45Kpa-0.55Kpa.
In above-mentioned: in the step c of low pressure casting, the described dwell time is 300-350 second.
In above-mentioned: also heat-treat after low pressure casting, and described heat treatment is T6 heat treatment.
In above-mentioned: in the steps d of low pressure casting, described hardening time is 100-120 second.
In above-mentioned: the step 2 in the process of aluminium liquid) in, the nitrogen treatment of being divided by 15-22.Beneficial effect of the present invention:
1. the casting process parameters of low pressure casting can arrange adjustment arbitrarily in processing range, can ensure that liquid metals fills type steady, reduce or avoiding molten metal seething when filling type, impacting, splash phenomena, thus decrease the formation of oxidizing slag, avoid or reduce the defect of foundry goods, improve casting quality;
2. molten metal fills type under pressure, can improve the mobility of molten metal, and casting forming is good, be conducive to formed clear-cut, any surface finish foundry goods, for large thin wall casting shaping advantageously;
3. foundry goods crystallization and freezing under pressure, and feeding fully can be obtained, therefore cast structure is fine and close, after heat treating castings, mechanical performance is higher;
4. the scope of application of the low pressure casting alloy trade mark is wider, substantially can be used for various casting alloy.
Detailed description of the invention
The invention will be further described below:
A kind of engine aluminum cylinder low-pressure casting method, comprise coremaking, the process of aluminium liquid and low pressure casting successively, wherein said aluminium liquid process comprises the following steps: melt: be melt under the high temperature of 710-730 degree in temperature by materials A C4B; Aluminium liquid refinery by de-gassing: carry out refinery by de-gassing process by degassing refining agent; Scarfing cinder: the aluminium liquid after refining is extracted and carries out scarfing cinder; Static: with coverture, aluminium liquid and air to be isolated, then clean out aluminium liquid;
Described low pressure casting comprises the steps: mould pretreatment: heat to mould and cylinder sleeve, installs the core after infiltration and cylinder sleeve simultaneously; Matched moulds: carry out matched moulds to mould by equipment, makes the aluminium liquid after process pour into simultaneously; Pressurize: by exerting pressure to inner chamber of cylinder block, and pressurize is carried out to inner chamber; Solidification: after product fills type, then solidify; Die sinking: by equipment, die sinking is carried out to mould after solidifying; Complete.The casting process parameters of low pressure casting can arrange adjustment arbitrarily in processing range, can ensure that liquid metals fills type steady, reduce or avoid molten metal when filling type seethe, impact, splash phenomena, thus decrease the formation of oxidizing slag, avoid or reduce the defect of foundry goods, improve casting quality.
In order to improve above-mentioned in scheme: in the step a of low pressure casting, after heating to mould, make mold temperature remain on 250-350 degree, after heating to cylinder sleeve, make cylinder sleeve temperature remain on 400-500 degree.In the step c of low pressure casting, in pressurize, make the pressure of inner chamber of cylinder block remain on 0.45Kpa-0.55Kpa keep 300-350 time second.
In order to coordinate its technique also to heat-treat after low pressure casting, and described heat treatment is T6 heat treatment.
In above-mentioned: in the steps d of low pressure casting, described hardening time is 100-120 second.
In above-mentioned: the step 2 in the process of aluminium liquid) in, the nitrogen treatment of being divided by 15-22.
Foundry goods is crystallization and freezing under pressure, and can obtain feeding fully, therefore cast structure is fine and close, and after heat treating castings, mechanical performance is higher.
In sum, be only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations of doing according to type shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.
Claims (8)
1. an engine aluminum cylinder low-pressure casting method, is characterized in that, comprises coremaking, the process of aluminium liquid and low pressure casting successively, and wherein said aluminium liquid process comprises the following steps:
1) melt: materials A C4B is at high temperature melted;
2) aluminium liquid refinery by de-gassing: carry out refinery by de-gassing process by degassing refining agent;
3) scarfing cinder: the aluminium liquid after refining is extracted and carries out scarfing cinder;
4) static: with coverture, aluminium liquid and air to be isolated, then clean out aluminium liquid.
Described low pressure casting comprises the steps:
A) mould pretreatment: heat to mould and cylinder sleeve, installs the core after infiltration and cylinder sleeve simultaneously;
B) matched moulds: carry out matched moulds to mould by equipment, makes the aluminium liquid after process pour into simultaneously;
C) pressurize: by exerting pressure to inner chamber of cylinder block, and pressurize is carried out to inner chamber;
D) solidify: after product fills type, then solidify;
E) die sinking: by equipment, die sinking is carried out to mould after solidifying;
F) complete.
2. engine aluminum cylinder low-pressure casting method according to claim 1, is characterized in that, in the step 1) of aluminium liquid process, materials A C4B is that 710-730 degree high temperature melts by temperature.
3. engine aluminum cylinder low-pressure casting method according to claim 1, is characterized in that, in the step a of low pressure casting, makes mold temperature remain on 250-350 degree to mould after heating, makes cylinder sleeve temperature remain on 400-500 degree to cylinder sleeve after heating.
4. engine aluminum cylinder low-pressure casting method according to claim 3, is characterized in that, in the step c of low pressure casting, makes the pressure of inner chamber of cylinder block remain on 0.45Kpa-0.55Kpa in pressurize.
5. engine aluminum cylinder low-pressure casting method according to claim 4, is characterized in that, in the step c of low pressure casting, the described dwell time is 300-350 second.
6. engine aluminum cylinder low-pressure casting method according to claim 1, is characterized in that, also heat-treat after low pressure casting, and described heat treatment is T6 heat treatment.
7. engine aluminum cylinder low-pressure casting method according to claim 1, is characterized in that, in the steps d of low pressure casting, described hardening time is 100-120 second.
8. engine aluminum cylinder low-pressure casting method according to claim 1, is characterized in that, the step 2 in the process of aluminium liquid) in, the nitrogen treatment of being divided by 15-22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310304558.4A CN104289696A (en) | 2013-07-17 | 2013-07-17 | Engine aluminum cylinder body low-pressure casting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310304558.4A CN104289696A (en) | 2013-07-17 | 2013-07-17 | Engine aluminum cylinder body low-pressure casting method |
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| CN104289696A true CN104289696A (en) | 2015-01-21 |
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| CN201310304558.4A Pending CN104289696A (en) | 2013-07-17 | 2013-07-17 | Engine aluminum cylinder body low-pressure casting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364048A (en) * | 2015-12-02 | 2016-03-02 | 衢州学院 | Manufacture method of connecting rod of air compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563456A (en) * | 2004-03-21 | 2005-01-12 | 浙江瑞明汽车部件有限公司 | Cylinder block made from wearable aluminum alloy and manufacturing technique |
| CN101497121A (en) * | 2008-01-31 | 2009-08-05 | 上海爱仕达汽车零部件有限公司 | Diesel motor aluminium alloy cylinder metal mould low-pressure casting method |
| CN102618738A (en) * | 2012-04-24 | 2012-08-01 | 东莞市奥达铝业有限公司 | Smelting process for aluminum-silicon master alloy |
| CN102699312A (en) * | 2012-07-12 | 2012-10-03 | 上海嘉朗实业有限公司 | Low-pressure casting process and mould for aluminium alloy steering knuckle |
-
2013
- 2013-07-17 CN CN201310304558.4A patent/CN104289696A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563456A (en) * | 2004-03-21 | 2005-01-12 | 浙江瑞明汽车部件有限公司 | Cylinder block made from wearable aluminum alloy and manufacturing technique |
| CN101497121A (en) * | 2008-01-31 | 2009-08-05 | 上海爱仕达汽车零部件有限公司 | Diesel motor aluminium alloy cylinder metal mould low-pressure casting method |
| CN102618738A (en) * | 2012-04-24 | 2012-08-01 | 东莞市奥达铝业有限公司 | Smelting process for aluminum-silicon master alloy |
| CN102699312A (en) * | 2012-07-12 | 2012-10-03 | 上海嘉朗实业有限公司 | Low-pressure casting process and mould for aluminium alloy steering knuckle |
Non-Patent Citations (2)
| Title |
|---|
| 尚玉润: "《铸造有色合金及其熔炼》", 31 May 1992, article "吹气精炼", pages: 51-53 * |
| 陈学美: "汽车发动机下缸体低压铸造工艺及模具设计", 《特种铸造及有色合金》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364048A (en) * | 2015-12-02 | 2016-03-02 | 衢州学院 | Manufacture method of connecting rod of air compressor |
| CN105364048B (en) * | 2015-12-02 | 2018-06-12 | 衢州学院 | A kind of air compressor machine connecting rod manufacturing method |
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Application publication date: 20150121 |