CN104741575A - Low-pressure casting and manufacturing technology of aluminum alloy cylinder part - Google Patents
Low-pressure casting and manufacturing technology of aluminum alloy cylinder part Download PDFInfo
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- CN104741575A CN104741575A CN201310721755.6A CN201310721755A CN104741575A CN 104741575 A CN104741575 A CN 104741575A CN 201310721755 A CN201310721755 A CN 201310721755A CN 104741575 A CN104741575 A CN 104741575A
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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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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a low-pressure casing and manufacturing technology of an aluminum alloy cylinder part. Aluminum alloy materials adopted in the technology comprise, by mass, 6.0 percent to 7.0 percent of Si, 0.3 percent to 0.5 percent of Mg, 0.1 percent to 0.2 percent of Ti, 0.05 percent to 0.15 percent of Fe and the balance of Al. After the materials are melted, thinned, metamorphosed and refined, low-pressure cast moulding is carried out on the materials. Through the liquid ascending, mould filling, pressure maintaining and pressure relieving processes of the low pressure casting, a casting is formed in a mould cavity. After solution treatment and non-complete artificial aging heat treatment are carried out on a casting blank, the low-pressure casing and manufacturing technology has the advantages that the structure is compact, casting defects of pores, porosity shrinkage, cavity shrinkage, slag inclusion and the like are solved, the casing quality is improved, meanwhile, the machining allowance of the casting is small, the material utilization rate is improved, and the manufacturing cost is reduced.
Description
Technical field
The invention belongs to casting technology field, be specifically related to a kind of low pressure casting process of aluminum alloy cylinder part.
Background technology
The casting of aluminum alloy cylinder part at least needs the steps such as configuration aluminium alloy, fusing, matched moulds, reinforcing, in current aluminum alloy cylinder part pouring technology, the casting finished products hardness made is inadequate, pore is larger, Shrinkage cavity phenomenon is more serious, not only casting process is more, affects production capacity, and percent defective is also higher simultaneously.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of low pressure casting process of aluminum alloy cylinder part, can directly cast out aluminium alloy cylindrical body foundry goods, casting accuracy is high, and processing technology thereof is simple.
The low pressure casting process of aluminum alloy cylinder part provided by the invention, comprises the following steps:
(1) prepare aluminium alloy, its material composition mass percent proportioning is: Si:6.0% ~ 7.0%, Mg:0.3% ~ 0.5%, Ti:0.1% ~ 0.2%, Fe:0.05% ~ 0.15%, the impurity element total amounts such as Cu, Mn, Zn, Sn, Pb are no more than 0.5%, and all the other are Al;
(2) aluminium alloy will prepared, heat in melting furnace and melt, after alloy melts completely, temperature of aluminum liquid is adjusted to 730 DEG C ~ 750 DEG C, adopt al-ti-b refiner to carry out micronization processes, fining agent addition is 0.1% ~ 0.2% of molten alloy gross mass; Temperature of aluminum liquid is adjusted to 720 DEG C ~ 740 DEG C, adopt aluminium strontium alterant to carry out Metamorphism treatment, alterant addition is 0.3% ~ 0.5% of molten alloy gross mass; Temperature of aluminum liquid is adjusted to 710 DEG C ~ 730 DEG C, adopt refining agent to carry out refining treatment, refining agent addition is 0.5% ~ 0.6% of molten alloy gross mass; Last skimming, and aluminum alloy melt is proceeded in low pressure casting machine holding furnace, and aluminium alloy temperature is transferred to 680 DEG C ~ 690 DEG C to be poured;
(3) matched moulds, and locking die, setting low-pressure casting process parameter, namely rise hydraulic coupling 0.03MPa ~ 0.04MPa, rise liquid speed 30mm/s ~ 50mm/s, mold filling pressure 0.05MPa ~ 0.06MPa, fill type speed 50mm/s ~ 80mm/s, boost pressure 0.08MPa ~ 0.12MPa, pressurization time 20s ~ 30s, mould remaining time 10s ~ 20s, dwell time 20s ~ 30s, complete and rise liquid, fill type, pressurize, the whole casting process of release, die sinking, take out foundry goods;
(4) to the cylindric casting obtained, carry out solution treatment and add incomplete artificially aged Technology for Heating Processing, put into Aluminium Alloy Solution Treatment equipment by cylindric casting, be heated to 535 ± 5 DEG C, temperature retention time 6h ~ 8h, is immersed in the water in 30s, and water temperature should control more than 70 DEG C, cylindric casting after Wetted constructures is cooled to room temperature, and 8h is stopped under room temperature state, then proceed in aluminium alloy aging processing apparatus, aging temp 165 ± 5 DEG C, temperature retention time 6h ~ 8h, takes out air cooling.
The low pressure casting process of aluminum alloy cylinder part provided by the invention, its beneficial effect is, overcome prior art processing aluminum alloy cylinder part, operation is more, the problem that workload is large, improves production efficiency; Avoid because of the defective mass defect caused of raw material allotment, utilization rate of raw materials is high, reduces production cost; The finished product cast size of the finished product cast out is accurate and hardness is comparatively large, without the need to machining, effectively ensure that casting quality.
Detailed description of the invention
Below in conjunction with an embodiment, the low pressure casting process of aluminum alloy cylinder part provided by the invention is described in detail.
Embodiment
The low pressure casting process of the aluminum alloy cylinder part of the present embodiment, comprises the following steps:
(1) prepare aluminium alloy, its material composition mass percent proportioning is: the impurity element such as Si:6%, Mg:0.4%, Ti:0.15%, Fe:0.1%, Cu, Mn, Zn, Sn, Pb total amount is no more than 0.4%, and all the other are Al;
(2) aluminium alloy will prepared, heats and melts, after alloy melts completely, temperature of aluminum liquid is adjusted to 740 DEG C in melting furnace, and adopt al-ti-b refiner to carry out micronization processes, fining agent addition is 0.15% of molten alloy gross mass; Temperature of aluminum liquid is adjusted to 730 DEG C, adopt aluminium strontium alterant to carry out Metamorphism treatment, alterant addition is 0.4% of molten alloy gross mass; Temperature of aluminum liquid is adjusted to 720 DEG C, adopt refining agent to carry out refining treatment, refining agent addition is 0.5% of molten alloy gross mass; Last skimming, and aluminum alloy melt is proceeded in low pressure casting machine holding furnace, and aluminium alloy temperature is transferred to 685 DEG C to be poured;
(3) matched moulds, and locking die, setting low-pressure casting process parameter, namely rise hydraulic coupling 0.03MPa, rise liquid speed 40mm/s, mold filling pressure 0.055MPa, fill type speed 60mm/s, boost pressure 0.1MPa, pressurization time 25s, mould remaining time 15s, dwell time 25s, complete and rise liquid, fill type, pressurize, the whole casting process of release, die sinking, take out foundry goods;
(4) to the cylindric casting obtained, carry out solution treatment and add incomplete artificially aged Technology for Heating Processing, put into Aluminium Alloy Solution Treatment equipment by cylindric casting, be heated to 530 DEG C, temperature retention time 7h, is immersed in the water in 30s, and water temperature should control 80 DEG C, cylindric casting after Wetted constructures is cooled to room temperature, and 8h is stopped under room temperature state, then proceed in aluminium alloy aging processing apparatus, aging temp 165 DEG C, temperature retention time 7h, takes out air cooling.
The low pressure casting process of aluminum alloy cylinder part, directly can cast out aluminum alloy cylinder part, and without the need to machining, operation is simple, and the finished product cast size cast out is accurate, effectively ensure that casting quality.
Claims (1)
1. a low pressure casting process for aluminum alloy cylinder part, is characterized in that: said method comprising the steps of:
(1) prepare aluminium alloy, its material composition mass percent proportioning is: Si:6.0% ~ 7.0%, Mg:0.3% ~ 0.5%, Ti:0.1% ~ 0.2%, Fe:0.05% ~ 0.15%, the impurity element total amounts such as Cu, Mn, Zn, Sn, Pb are no more than 0.5%, and all the other are Al;
(2) aluminium alloy will prepared, heat in melting furnace and melt, after alloy melts completely, temperature of aluminum liquid is adjusted to 730 DEG C ~ 750 DEG C, adopt al-ti-b refiner to carry out micronization processes, fining agent addition is 0.1% ~ 0.2% of molten alloy gross mass; Temperature of aluminum liquid is adjusted to 720 DEG C ~ 740 DEG C, adopt aluminium strontium alterant to carry out Metamorphism treatment, alterant addition is 0.3% ~ 0.5% of molten alloy gross mass; Temperature of aluminum liquid is adjusted to 710 DEG C ~ 730 DEG C, adopt refining agent to carry out refining treatment, refining agent addition is 0.5% ~ 0.6% of molten alloy gross mass; Last skimming, and aluminum alloy melt is proceeded in low pressure casting machine holding furnace, and aluminium alloy temperature is transferred to 680 DEG C ~ 690 DEG C to be poured;
(3) matched moulds, and locking die, setting low-pressure casting process parameter, namely rise hydraulic coupling 0.03MPa ~ 0.04MPa, rise liquid speed 30mm/s ~ 50mm/s, mold filling pressure 0.05MPa ~ 0.06MPa, fill type speed 50mm/s ~ 80mm/s, boost pressure 0.08MPa ~ 0.12MPa, pressurization time 20s ~ 30s, mould remaining time 10s ~ 20s, dwell time 20s ~ 30s, complete and rise liquid, fill type, pressurize, the whole casting process of release, die sinking, take out foundry goods;
(4) to the cylindric casting obtained, carry out solution treatment and add incomplete artificially aged Technology for Heating Processing, put into Aluminium Alloy Solution Treatment equipment by cylindric casting, be heated to 535 ± 5 DEG C, temperature retention time 6h ~ 8h, is immersed in the water in 30s, and water temperature should control more than 70 DEG C, cylindric casting after Wetted constructures is cooled to room temperature, and 8h is stopped under room temperature state, then proceed in aluminium alloy aging processing apparatus, aging temp 165 ± 5 DEG C, temperature retention time 6h ~ 8h, takes out air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310721755.6A CN104741575A (en) | 2013-12-25 | 2013-12-25 | Low-pressure casting and manufacturing technology of aluminum alloy cylinder part |
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| CN201310721755.6A CN104741575A (en) | 2013-12-25 | 2013-12-25 | Low-pressure casting and manufacturing technology of aluminum alloy cylinder part |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170944A (en) * | 2015-09-17 | 2015-12-23 | 天津市信通机械设备制造有限公司 | Low-pressure casting method for compressor body |
| CN105382239A (en) * | 2015-12-21 | 2016-03-09 | 常熟市制冷压缩机铸件厂 | Aluminum compressor housing of refrigerator |
| 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 |
| CN106367637A (en) * | 2016-08-27 | 2017-02-01 | 来安县科来兴实业有限责任公司 | High- and low-temperature-resistant aluminum alloy for gear box of motor train unit and preparation method therefor |
| CN106925756A (en) * | 2017-02-23 | 2017-07-07 | 中国第汽车股份有限公司 | A kind of low-pressure casting preparation method of aluminum alloy auxiliary vehicle frame |
| CN107309413A (en) * | 2017-08-16 | 2017-11-03 | 大亚车轮制造有限公司 | A kind of low-pressure casting process of the large scale negative bias away from aluminium alloy wheel hub |
| CN107552766A (en) * | 2017-08-23 | 2018-01-09 | 安徽东星汽车部件有限公司 | A kind of high-strength vehicle chassis security aluminium alloy castings low-pressure casting process |
| CN108290210A (en) * | 2015-11-02 | 2018-07-17 | 慕贝尔性能车轮有限公司 | Method for manufacturing light metal casting component and light metal casting component |
| CN108977677A (en) * | 2018-08-02 | 2018-12-11 | 鹰普航空零部件（无锡）有限公司 | The metamorphism treatment method of aluminium alloy in a kind of low pressure casting process |
| CN109234652A (en) * | 2018-10-30 | 2019-01-18 | 烟台路通精密科技股份有限公司 | A kind of aluminium alloy castings short route heat treatment method |
| CN111618276A (en) * | 2020-07-18 | 2020-09-04 | 常州嘉阳轻合金有限公司 | Low-pressure casting process of iron eight-axis aluminum alloy gearbox |
| CN112775414A (en) * | 2021-01-11 | 2021-05-11 | 山东一立动力科技股份有限公司 | Low-pressure casting method of aluminum alloy fan blade |
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2013
- 2013-12-25 CN CN201310721755.6A patent/CN104741575A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170944A (en) * | 2015-09-17 | 2015-12-23 | 天津市信通机械设备制造有限公司 | Low-pressure casting method for compressor body |
| CN108290210A (en) * | 2015-11-02 | 2018-07-17 | 慕贝尔性能车轮有限公司 | Method for manufacturing light metal casting component and light metal casting component |
| CN105382239A (en) * | 2015-12-21 | 2016-03-09 | 常熟市制冷压缩机铸件厂 | Aluminum compressor housing of refrigerator |
| 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 |
| CN106367637A (en) * | 2016-08-27 | 2017-02-01 | 来安县科来兴实业有限责任公司 | High- and low-temperature-resistant aluminum alloy for gear box of motor train unit and preparation method therefor |
| CN106925756A (en) * | 2017-02-23 | 2017-07-07 | 中国第汽车股份有限公司 | A kind of low-pressure casting preparation method of aluminum alloy auxiliary vehicle frame |
| CN107309413A (en) * | 2017-08-16 | 2017-11-03 | 大亚车轮制造有限公司 | A kind of low-pressure casting process of the large scale negative bias away from aluminium alloy wheel hub |
| CN107552766A (en) * | 2017-08-23 | 2018-01-09 | 安徽东星汽车部件有限公司 | A kind of high-strength vehicle chassis security aluminium alloy castings low-pressure casting process |
| CN108977677A (en) * | 2018-08-02 | 2018-12-11 | 鹰普航空零部件（无锡）有限公司 | The metamorphism treatment method of aluminium alloy in a kind of low pressure casting process |
| CN108977677B (en) * | 2018-08-02 | 2020-08-04 | 鹰普航空零部件（无锡）有限公司 | Modification treatment method for aluminum alloy in low-pressure casting process |
| CN109234652A (en) * | 2018-10-30 | 2019-01-18 | 烟台路通精密科技股份有限公司 | A kind of aluminium alloy castings short route heat treatment method |
| CN111618276A (en) * | 2020-07-18 | 2020-09-04 | 常州嘉阳轻合金有限公司 | Low-pressure casting process of iron eight-axis aluminum alloy gearbox |
| CN112775414A (en) * | 2021-01-11 | 2021-05-11 | 山东一立动力科技股份有限公司 | Low-pressure casting method of aluminum alloy fan blade |
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