CN102699312A - Low-pressure casting process and mould for aluminium alloy steering knuckle - Google Patents
Low-pressure casting process and mould for aluminium alloy steering knuckle Download PDFInfo
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- CN102699312A CN102699312A CN2012102396095A CN201210239609A CN102699312A CN 102699312 A CN102699312 A CN 102699312A CN 2012102396095 A CN2012102396095 A CN 2012102396095A CN 201210239609 A CN201210239609 A CN 201210239609A CN 102699312 A CN102699312 A CN 102699312A
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Abstract
The invention relates to a low-pressure casting process and a mould for an aluminium alloy steering knuckle. The low-pressure casting process comprises the following process steps of: A, selection and preparation for a material (A356 is used, 0.04-0.05wt% of Sr is added according to the total of alloy solution to deteriorate an aluminium solution, so as to refine crystalline grains during the crystallization of the aluminium solution); and B, casting for a product, wherein a low-pressure casting mould is used for casting, and the casting comprises: putting in a filter screen, assembling the mould, lifting the solution, filling the mould, maintaining a pressure, opening water-cooling, relieving the pressure, closing the water-cooling, opening an upper mould, ejecting, and taking out the product. The low-pressure casting process and the mould are mainly used for solving the problems of large equipment tonnage, complex procedures during a manufacturing process, high material cost and the like existing in the existing forging method for an aluminium alloy steering knuckle, and are capable of producing casting products which meet requirements without a need of expensive investment; and moreover, the castings are high in structure compactness, good in casting quality, and high in production efficiency. Simultaneously, the metal solution is high in utilization rate and less in the consumption of auxiliary materials.
Description
Technical field
The present invention relates to low-pressure casting process and prepare the part technical field, particularly a kind of low-pressure casting process of aluminium alloy knuckle and mould.
Background technology
Spindle is the parts that connect vehicle steering and front-wheel wheel shaft, and links to each other with damper.It mainly contains three partial functions: 1 is connected with front axle, bears power and moment that axle transmits, the rotatable parts of 2 motor turnings, and 3 absorb the concussion in the automobile traveling process.It is in the automobile stress concentrate the most, complicated parts the most; Under motoring condition, it is bearing changeable shock loading, therefore, requires it to have very high intensity.At present traditional aluminium alloy knuckle is many to be main with forging, and aluminum alloy forged have equipment tonnage big, complex procedures in the manufacture process, problems such as material cost height.
Summary of the invention
The object of the present invention is to provide a kind of low-pressure casting process and mould of aluminium alloy knuckle, it mainly solves existing aluminium alloy steering knuckle forging method and exists equipment tonnage big, complex procedures in the manufacture process; Problems such as material cost height; It does not need expensive investment, can produce satisfactory cast product, and the THE STRUCTURE OF CASTINGS density is high; Casting quality is good, and production efficiency is high.The utilization rate of molten metal is high simultaneously, and auxiliary material consumption is few.
The present invention solves the problems of the technologies described above the technical scheme that is adopted.
A kind of low-pressure casting process of aluminium alloy knuckle is characterized in that: it comprises following processing step:
The selecting for use and prepare of A material:
Aluminum alloy materials adopts A356; The A356 alloy pig is put into melting furnace to be melted; Fusing back to alloy liquid go bad, refining treatment; Refining temperature is 730～740 ℃, and to add mass percent by alloy liquid total amount be that the Sr of 0.04～0.05 ﹪ goes bad the grain refinement when making the crystallization of aluminium liquid to aluminium liquid; Adopt the rotation getter to feed argon gas 10～15min simultaneously and carry out the degasification of aluminium liquid, degasification is left standstill 10～15min with aluminium liquid after accomplishing; Reduce the air content in the aluminium liquid, be injected in the holding furnace of air injection machine the alloy liquid of handling well for use at last;
The casting of B product:
Adopt low pressure casting die to cast; Comprise: following screen pack, matched moulds, rise liquid, fill type, pressurize, open water-cooled, release, pass water-cooled, open patrix, eject, the pickup step;
Earlier muff and mould are carried out preheating before the cast, the control mold preheating temperature is 340 ± 20 ℃; Making the temperature of aluminum liquid in the holding furnace is 705 ± 10 ℃; Pour into a mould behind the matched moulds; Filling the type technological parameter is respectively: rising hydraulic coupling 0.0155MPa, rising the liquid time is that 12 seconds, mold filling pressure are that 0.022MPa, filling time are that 10 seconds, dwell pressure are 0.05～0.06MPa, dwell time to be that 130 ± 20 seconds, cool time are 50 ± 20 seconds; Carry out die sinking; After foundry goods moves on to the height of setting on patrix, eject foundry goods.
The low-pressure casting process of described aluminium alloy knuckle is characterized in that: described Sr is to contain the form adding that the Sr amount is 10 ﹪ aluminium strontium intermediate alloys.
The mould that adopts in a kind of low-pressure casting process of aforesaid aluminium alloy knuckle is characterized in that: it is made up of two parts of upper die and lower die; Wherein:
Patrix comprises upper module, cope match-plate pattern, branch flow cone, ejecting mechanism and resetting-mechanism; Described upper module and cope match-plate pattern fix, and divide flow cone to be fixed on corresponding cast gate position, upper module center; At patrix push rod is set, push rod is fixed on the top board and through the top board guide post and is fixed on the patrix, forms ejecting mechanism; Described resetting-mechanism is a release link;
Counterdie comprises lower module, lower bolster, sprue bush and muff; Described lower module is connected with lower bolster; Cast gate is arranged on the lower module center; Sprue bush is inserted for what made at the cast gate position, links with sprue bush on the muff, links with low press stalk down, formation aluminium liquid passage; Described cast gate position is provided with heating tube;
Also be provided with the matched moulds detent mechanism between the described upper die and lower die.
Described mould is characterized in that: 3 tunnel water-cooleds are set on the described mould, and their position is separately positioned on branch flow cone, upper die and lower die place; The recirculated cooling water road is set one, one recirculated cooling water road of counterdie setting on upper module.
Described mould is characterized in that: the water-cooled opening time of described minute flow cone is that pressurize was opened after 130 seconds, closes behind the cooling 40S; Patrix one tunnel water-cooled is opened behind pressurize 50S simultaneously, closes behind the cooling 80S; Counterdie one tunnel water-cooled is opened behind pressurize 100S, closes behind the cooling 50S.
Described mould is characterized in that: described mould adopts the spraying of ACHESON DAG395 coating, and the THICKNESS CONTROL of coating is about 0.3mm; The brushing of the Fushi 36# of section coating is adopted at the ingate position, and its thickness is guaranteed about 1mm, guarantees the heat insulation effect of the aluminium liquid at cast gate position.
Compared with prior art, the invention has the beneficial effects as follows: the present invention controls the process of melting, refining and cast through improving the Birmasil composition of raw material, improves the mechanical performance of Birmasil foundry goods.
Description of drawings
Fig. 1 is the general assembly drawing of casting mould counterdie among the present invention.
Fig. 2 is the profile of casting mould counterdie among the present invention.
Fig. 3 is the general assembly drawing of casting mould patrix among the present invention.
Fig. 4 is the vertical view of casting mould patrix among the present invention.
The specific embodiment
The invention discloses a kind of low-pressure casting process of aluminium alloy knuckle, it comprises following processing step:
The selecting for use and prepare of A material:
Aluminum alloy materials adopts A356; The A356 alloy pig is put into melting furnace to be melted; Fusing back to alloy liquid go bad, refining treatment; Refining temperature is 730～740 ℃, and to add mass percent by alloy liquid total amount be that the Sr of 0.04～0.05 ﹪ goes bad the grain refinement when making the crystallization of aluminium liquid to aluminium liquid; Adopt the rotation getter to feed argon gas 10～15min simultaneously and carry out the degasification of aluminium liquid, degasification is left standstill 10～15min with aluminium liquid after accomplishing; Reduce the air content in the aluminium liquid, be injected in the holding furnace of air injection machine the alloy liquid of handling well for use at last.
The casting of B product:
Adopt low pressure casting die to cast; Comprise: following screen pack (as: down manual screen pack), matched moulds, rise liquid, fill type, pressurize, open water-cooled, release, pass water-cooled, open patrix, eject, the pickup step;
Earlier muff and mould are carried out preheating before the cast, the control mold preheating temperature is 340 ± 20 ℃ (mold temperature is too high or cross and hang down the internal soundness that all is unfavorable for this product); Making the temperature of aluminum liquid in the holding furnace is 705 ± 10 ℃; Pour into a mould behind the matched moulds; Filling the type technological parameter is respectively: rising hydraulic coupling 0.0155MPa, rising the liquid time is that 12 seconds, mold filling pressure are that 0.022MPa, filling time are that 10 seconds, dwell pressure are 0.05～0.06MPa, dwell time to be that 130 ± 20 seconds, cool time are 50 ± 20 seconds; Carry out die sinking; After foundry goods moves on to the height of setting on patrix, eject foundry goods.
As a kind of optimal way, described Sr is to contain the form adding that the Sr amount is 10 ﹪ aluminium strontium intermediate alloys.
Shown in Fig. 1-4, it is the mould that adopts in the low-pressure casting process of aluminium alloy knuckle of the present invention, it is characterized in that: it is made up of two parts of upper die and lower die; Wherein:
Patrix comprises upper module 9, cope match-plate pattern 14, divides flow cone 10, ejecting mechanism and resetting-mechanism; Described upper module 9 fixes with cope match-plate pattern 14, divides flow cone 10 to be fixed on corresponding cast gate position, upper module 9 centers; At patrix push rod 18 is set, push rod 18 is fixed on the top board 15 and through top board guide post 12 and is fixed on the patrix, forms ejecting mechanism; Described resetting-mechanism is a release link 11, and release link is distributed on four angles of mould, is fixed on the top board of ejecting mechanism, through release link top board is resetted during matched moulds.
Counterdie comprises lower module 2, lower bolster 1, sprue bush 7 and muff 8; Described lower module 2 is connected with lower bolster 1; Cast gate 5 is arranged on lower module 1 center; Sprue bush 7 is inserted for what made at the cast gate position, links with sprue bush 7 on the muff 8, links with low press stalk down, formation aluminium liquid passage; Described cast gate 5 positions are provided with heating tube 6 (can be provided with two), and it can make the mold temperature at cast gate position be higher than other position.
Also be provided with matched moulds detent mechanism (comprising the mould pin 13 among matched moulds guide 6 and the Fig. 3 among Fig. 1) between the described upper die and lower die.
3 tunnel water-cooleds are set on the mould among the present invention, and their position is separately positioned on branch flow cone (like the branch flow cone water route among Fig. 4), patrix (like the patrix water route 17 among Fig. 4) and counterdie (like the counterdie water route 3 among Fig. 1) and locates; The recirculated cooling water road is set one, one recirculated cooling water road of counterdie setting on upper module.In the use, the water-cooled opening time of described minute flow cone is that pressurize was opened after 130 seconds, closes behind the cooling 40S; Patrix one tunnel water-cooled is opened behind pressurize 50S simultaneously, closes behind the cooling 80S; Counterdie one tunnel water-cooled is opened behind pressurize 100S, closes behind the cooling 50S.The purpose that the said structure water-cooling channel is set is to regulate and control the temperature of mould through the time of control water-cooled, guarantees that foundry goods forms by the temperature field that forms order away from the cast gate position to the cast gate position.
Mould among the present invention can adopt the spraying of ACHESON DAG395 coating, and the THICKNESS CONTROL of coating is about 0.3mm; The brushing of the Fushi 36# of section coating is adopted at the ingate position, and its thickness is guaranteed about 1mm, guarantees the heat insulation effect of the aluminium liquid at cast gate position.
In sum, being merely preferred embodiment of the present invention, is not to be used for limiting practical range of the present invention, and promptly all equivalences of doing according to the content of claim of the present invention change and modify, and all should be technological category of the present invention.
Claims (6)
1. the low-pressure casting process of an aluminium alloy knuckle, it is characterized in that: it comprises following processing step:
The selecting for use and prepare of A material:
Aluminum alloy materials adopts A356; The A356 alloy pig is put into melting furnace to be melted; Fusing back to alloy liquid go bad, refining treatment; Refining temperature is 730～740 ℃, and to add mass percent by alloy liquid total amount be that the Sr of 0.04～0.05 ﹪ goes bad the grain refinement when making the crystallization of aluminium liquid to aluminium liquid; Adopt the rotation getter to feed argon gas 10～15min simultaneously and carry out the degasification of aluminium liquid, degasification is left standstill 10～15min with aluminium liquid after accomplishing; Reduce the air content in the aluminium liquid, be injected in the holding furnace of air injection machine the alloy liquid of handling well for use at last;
The casting of B product:
Adopt low pressure casting die to cast; Comprise: following screen pack, matched moulds, rise liquid, fill type, pressurize, open water-cooled, release, pass water-cooled, open patrix, eject, the pickup step;
Earlier muff and mould are carried out preheating before the cast, the control mold preheating temperature is 340 ± 20 ℃; Making the temperature of aluminum liquid in the holding furnace is 705 ± 10 ℃; Pour into a mould behind the matched moulds; Filling the type technological parameter is respectively: rising hydraulic coupling 0.0155MPa, rising the liquid time is that 12 seconds, mold filling pressure are that 0.022MPa, filling time are that 10 seconds, dwell pressure are 0.05～0.06MPa, dwell time to be that 130 ± 20 seconds, cool time are 50 ± 20 seconds; Carry out die sinking; After foundry goods moves on to the height of setting on patrix, eject foundry goods.
2. the low-pressure casting process of aluminium alloy knuckle according to claim 1 is characterized in that: described Sr is to contain the form adding that the Sr amount is 10 ﹪ aluminium strontium intermediate alloys.
3. the mould that adopts in the low-pressure casting process of an aluminium alloy knuckle according to claim 1 or claim 2 is characterized in that: it is made up of two parts of upper die and lower die; Wherein:
Patrix comprises upper module (9), cope match-plate pattern (14), divides flow cone (10), ejecting mechanism and resetting-mechanism; Described upper module (9) and cope match-plate pattern (14) fix, and divide flow cone (10) to be fixed on corresponding cast gate position, upper module (9) center; At patrix push rod (18) is set, push rod (18) is fixed on top board (15) and goes up and be fixed on the patrix through top board guide post (12), forms ejecting mechanism; Described resetting-mechanism is release link (11);
Counterdie comprises lower module (2), lower bolster (1), sprue bush (7) and muff (8); Described lower module (2) is connected with lower bolster (1); Cast gate (5) is arranged on lower module (1) center; Sprue bush (7) is inserted for what made at the cast gate position, and muff (8) is last and sprue bush (7) links, descend and low press stalk links, and forms aluminium liquid passage; Described cast gate (5) position is provided with heating tube (6);
Also be provided with the matched moulds detent mechanism between the described upper die and lower die.
4. mould according to claim 3 is characterized in that: 3 tunnel water-cooleds are set on the described mould, and their position is separately positioned on branch flow cone, upper die and lower die place; The recirculated cooling water road is set one, one recirculated cooling water road of counterdie setting on upper module.
5. mould according to claim 4 is characterized in that: the water-cooled opening time of described minute flow cone is that pressurize was opened after 130 seconds, closes behind the cooling 40S; Patrix one tunnel water-cooled is opened behind pressurize 50S simultaneously, closes behind the cooling 80S; Counterdie one tunnel water-cooled is opened behind pressurize 100S, closes behind the cooling 50S.
6. mould according to claim 3 is characterized in that: described mould adopts the spraying of ACHESON DAG395 coating, and the THICKNESS CONTROL of coating is about 0.3mm; The brushing of the Fushi 36# of section coating is adopted at the ingate position, and its thickness is guaranteed about 1mm, guarantees the heat insulation effect of the aluminium liquid at cast gate position.
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| CN201210239609.5A CN102699312B (en) | 2012-07-12 | 2012-07-12 | Low-pressure casting process and mould for aluminium alloy steering knuckle |
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| CN201210239609.5A CN102699312B (en) | 2012-07-12 | 2012-07-12 | Low-pressure casting process and mould for aluminium alloy steering knuckle |
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| CN103846392A (en) * | 2014-03-27 | 2014-06-11 | 宁波强盛机械模具有限公司 | Casting method of steering knuckle of nodular cast iron |
| CN104289696A (en) * | 2013-07-17 | 2015-01-21 | 台州市朗禾机械有限公司 | Engine aluminum cylinder body low-pressure casting method |
| CN104550820A (en) * | 2013-10-09 | 2015-04-29 | 上海交通大学深圳研究院 | High-vacuum die-casting process for A356 aluminum alloy |
| CN104858348A (en) * | 2015-05-27 | 2015-08-26 | 法格霭德兰汽车配件〔昆山）有限公司 | Steering knuckle forming machine |
| CN106424585A (en) * | 2016-11-01 | 2017-02-22 | 佛山市南海奔达模具有限公司 | Cooling system for cast aluminum alloy steering knuckle mould |
| CN106825501A (en) * | 2017-02-27 | 2017-06-13 | 柳州阳科技有限公司 | Aluminium alloy wheel hub of vehicle low temperature casting technique |
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| CN108097923A (en) * | 2017-12-31 | 2018-06-01 | 北京航空航天大学 | A kind of differential pressure pressurization casting machine fills the casting device and casting method of type High Pressure Solidification with low pressure |
| CN108296468A (en) * | 2017-12-31 | 2018-07-20 | 北京航空航天大学 | A kind of pressure regulation supercharging casting machine fills the casting device and casting method of type High Pressure Solidification with low pressure |
| CN108326256A (en) * | 2017-12-31 | 2018-07-27 | 北京航空航天大学 | A kind of low pressure fills type High Pressure Solidification casting device and casting method |
| 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 |
| CN110257652A (en) * | 2019-06-27 | 2019-09-20 | 北京京翰林模具制造有限公司 | A kind of aluminium alloy casting automotive wheel, design method and manufacturing method |
| CN110695337A (en) * | 2018-07-10 | 2020-01-17 | 上海中振有色金属铸造有限公司 | Low-pressure casting method for hot pressing disc |
| CN111842800A (en) * | 2020-07-17 | 2020-10-30 | 宁波拓普汽车电子有限公司 | Method for casting aluminum alloy knuckle by aluminum alloy ingot |
| JP2021098219A (en) * | 2019-12-23 | 2021-07-01 | 本田金属技術株式会社 | Casting die and aluminum casting method |
| CN113355532A (en) * | 2021-05-19 | 2021-09-07 | 宁波卓锋汽车科技有限公司 | Environment-friendly cleaning treatment method for A356 aluminum liquid |
| CN115194120A (en) * | 2022-07-30 | 2022-10-18 | 浙江新峰机械有限公司 | Automobile steering knuckle die-casting die and low-pressure semi-solid casting process |
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| CN104289696A (en) * | 2013-07-17 | 2015-01-21 | 台州市朗禾机械有限公司 | Engine aluminum cylinder body low-pressure casting method |
| CN104550820A (en) * | 2013-10-09 | 2015-04-29 | 上海交通大学深圳研究院 | High-vacuum die-casting process for A356 aluminum alloy |
| CN103846392A (en) * | 2014-03-27 | 2014-06-11 | 宁波强盛机械模具有限公司 | Casting method of steering knuckle of nodular cast iron |
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| CN104858348A (en) * | 2015-05-27 | 2015-08-26 | 法格霭德兰汽车配件〔昆山）有限公司 | Steering knuckle forming machine |
| CN106424585A (en) * | 2016-11-01 | 2017-02-22 | 佛山市南海奔达模具有限公司 | Cooling system for cast aluminum alloy steering knuckle mould |
| CN106424585B (en) * | 2016-11-01 | 2019-06-11 | 佛山市南海奔达模具有限公司 | A kind of cooling system of cast aluminium alloy gold knuckle mold |
| CN106825501A (en) * | 2017-02-27 | 2017-06-13 | 柳州阳科技有限公司 | Aluminium alloy wheel hub of vehicle low temperature casting technique |
| CN106825501B (en) * | 2017-02-27 | 2019-02-19 | 柳州一阳科技有限公司 | Aluminium alloy wheel hub of vehicle low temperature casting technique |
| CN108326256A (en) * | 2017-12-31 | 2018-07-27 | 北京航空航天大学 | A kind of low pressure fills type High Pressure Solidification casting device and casting method |
| CN108296468A (en) * | 2017-12-31 | 2018-07-20 | 北京航空航天大学 | A kind of pressure regulation supercharging casting machine fills the casting device and casting method of type High Pressure Solidification with low pressure |
| CN108097923A (en) * | 2017-12-31 | 2018-06-01 | 北京航空航天大学 | A kind of differential pressure pressurization casting machine fills the casting device and casting method of type High Pressure Solidification with low pressure |
| CN108080601A (en) * | 2017-12-31 | 2018-05-29 | 北京航空航天大学 | A kind of low-pressure charging casting machine fills the casting device and casting method of type High Pressure Solidification with low pressure |
| CN110695337A (en) * | 2018-07-10 | 2020-01-17 | 上海中振有色金属铸造有限公司 | Low-pressure casting method for hot pressing disc |
| 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 |
| CN110257652A (en) * | 2019-06-27 | 2019-09-20 | 北京京翰林模具制造有限公司 | A kind of aluminium alloy casting automotive wheel, design method and manufacturing method |
| JP2021098219A (en) * | 2019-12-23 | 2021-07-01 | 本田金属技術株式会社 | Casting die and aluminum casting method |
| CN111842800A (en) * | 2020-07-17 | 2020-10-30 | 宁波拓普汽车电子有限公司 | Method for casting aluminum alloy knuckle by aluminum alloy ingot |
| CN113355532A (en) * | 2021-05-19 | 2021-09-07 | 宁波卓锋汽车科技有限公司 | Environment-friendly cleaning treatment method for A356 aluminum liquid |
| CN115194120A (en) * | 2022-07-30 | 2022-10-18 | 浙江新峰机械有限公司 | Automobile steering knuckle die-casting die and low-pressure semi-solid casting process |
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