CN102935491A - Metal section mould with controllable cross section and gravity slantingly-rotated foundry technique of aluminum alloy cylinder cover of metal section mould - Google Patents
Metal section mould with controllable cross section and gravity slantingly-rotated foundry technique of aluminum alloy cylinder cover of metal section mould Download PDFInfo
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- CN102935491A CN102935491A CN2012104438196A CN201210443819A CN102935491A CN 102935491 A CN102935491 A CN 102935491A CN 2012104438196 A CN2012104438196 A CN 2012104438196A CN 201210443819 A CN201210443819 A CN 201210443819A CN 102935491 A CN102935491 A CN 102935491A
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Abstract
The invention discloses a metal section mould with a controllable cross section and a gravity slantly-rotated foundry technique of an aluminum alloy cylinder cover of the metal section mould. The metal section mould comprises a pouring cup (1), a dead head sand core (2), a molding module (3), an ejector device (4), a water cooling device (5) and a negative pressure air extractor (6), and a control cross section retaining plate (7) is installed at the intersection position of the pouring cup and the dead head sand core on the lower portion of the pouring cup (1). Molten aluminum can only enter a casting cavity from a dead head beside an air inlet lateral cover due to retaining functions of the control cross section retaining plate in a slantingly-rotated pouring process, then the molten aluminum is discharged from a dead head at the position of a middle spark plug and a dead head beside an air discharge lateral cover, stable molten aluminum mold filling in a mold filling process is achieved, a principle of mold filling sequence and air inlet and air outlet in sequence is followed, the whole mold filling speed and time of a casting piece are controlled by controlling the minimum mold filling cross section of the pouring cup, defects such as air holes, shrinkage holes and shrinkage porosities produced by an original piece are obviously overcome, and accordingly product yield, acceptability and quality of the metal casting piece are improved.
Description
Technical field
The present invention relates to metal pattern die and aluminum alloy cylinder cover casting technique thereof that a kind of aluminum alloy casting technique is used.
Background technology
The complex structure of automobile engine cylinder head is comprised of the multilayer die cavity, and each chamber do not allow to exist leakage phenomenon, its wall unevenness, and the casting difficulty is larger.At present, both at home and abroad the casting technique of production engine aluminum cylinder cap has metal mold gravity casting technique, low-pressure casting process, special low-pressure casting process, lost foam casting process, sand mold low-pressure casting process, metal gravity tilted casting technique etc., wherein: metal mold gravity casting technique and low-pressure casting process are Birmasil methods traditional, ripe, with the most use, metal gravity tilted casting technique is a kind of ripe gradually, widely used novel process.But metal mold gravity casting exists, and the Mold Making cycle is long, expense large, the cylinder cap yield rate is low, easily produce the defective such as shrinkage porosite, though the metal gravity tilted casting is beneficial to cylinder head casting moulding and the advantages such as feeding, yield rate height, easily produces the defectives such as pore, shrinkage cavity and porosity.
The metal pattern die that adopts in the above-mentioned metal gravity tilted casting aluminium head technique, comprise cup, the rising head core, forming module, liftout attachment, water cooling plant, negative pressure ventilation device etc., its cup is in the process of gravity tilt pouring, when aluminium liquid can enter the foundry goods die cavity from air inlet side flaring rising head, part aluminium liquid can be crossed the rising head core and flow directly into middle spark plug place rising head, enter the foundry goods die cavity from middle spark plug rising head again, the aluminium liquid that enters from air inlet side flaring rising head and middle spark plug rising head like this can produce turbulent phenomenon in the foundry goods die cavity, the aluminium liquid that enters from middle spark plug rising head simultaneously can affect the discharge of gas in the foundry goods die cavity, thereby cause the generation of cylinder head casting gas hole defect, affected yield rate and the quality of foundry goods.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, and provide a kind of aluminium liquid that can make only can enter foundry goods die cavity, again from middle spark plug rising head and exhaust side flaring rising head out from air inlet side flaring rising head, and make aluminium casting be difficult for producing pore, the cross section controllable type metal pattern die of shrinkage cavity and porosity phenomenon and the gravity tilted casting technique of aluminum alloy cylinder cover thereof.
Purpose of the present invention is realized by following technical scheme: a kind of cross section controllable type metal pattern die, comprise cup, rising head core, forming module, liftout attachment, water cooling plant, negative pressure ventilation device, control cross section baffle plate is housed on the bottom of described cup and in the intersection of cup and rising head core.
Gravity tilted casting technique according to the aluminum alloy cylinder cover of described cross section controllable type metal pattern die gained is: the first step is coremaking: aluminum alloy cylinder cover sand core of water jacket, entering and exhaust channel core, oil pocket core and rising head core are made respectively and assembled; Second step is lower core, matched moulds: described relevant core order is in accordance with regulations progressively put into metal pattern die, and compress core by two side forms and two ends mould matched moulds, prevent core occurrence positions skew in the process of verting; The 3rd step was the casting ladle cast: metal pattern die is verted to 90 degree, make its cup filter mouth up, and pour aluminium liquid into cup from filtering mouth; The 4th step is for tilt pouring: metal pattern die through first fast, after at a slow speed the speed control of the process of verting make metal pattern die vert, reset, because the barrier effect of control cross section baffle plate, metal pattern die is controlled speed and the time that aluminium liquid flows into die cavity by control aluminium liquid from the minimum sectional area that cup enters the foundry goods die cavity in upset, make aluminium liquid enter the foundry goods die cavity from air inlet side flaring rising head, again from middle spark plug rising head and exhaust side flaring rising head out, realize filling type at the uniform velocity and controlled characteristics; The 5th step is for solidifying: unlatching negative pressure ventilation device and water cooling plant, until casting solidification and obtain the aluminum alloy cylinder cover foundry goods.
After adopting the present invention, after the basis of traditional cup increases control cross section baffle plate, in the process of tilt pouring, because the barrier effect of control cross section baffle plate, make aluminium liquid enter the foundry goods die cavity from air inlet side flaring rising head, again from middle spark plug rising head and exhaust side flaring rising head out, realized that aluminum liquid filling type is steady in cavity filling process, follow order and fill type, the principle of order intake and exhaust, the minimum sectional area that fills type by controlling cup is simultaneously controlled whole speed and the time of filling type of foundry goods, and former foundry goods is produced pore, the defectives such as shrinkage cavity and porosity have obvious improvement effect.Thereby yield rate, qualification rate and the quality of metal casting have been improved.
Description of drawings
The present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the structural representation (comprising relevant core) of cross section of the present invention controllable type metal pattern die.
Fig. 2 is the view of the present invention when being in the casting ladle pouring position.
Fig. 3 is the view of the present invention when being in tilt pouring.
The specific embodiment
With reference to shown in Figure 1, the present invention is applied to the cross section controllable type metal pattern die of metal gravity tilted casting aluminium head technique, comprise cup 1, rising head core 2, forming module 3, liftout attachment 4, water cooling plant 5, negative pressure ventilation device 6, control cross section baffle plate 7 is housed on the bottom of described cup 1 and in cup 1 and the intersection (by screw 11) of rising head core 2.This cup also can be described as controlled cross section cup.According to the gravity of the aluminum alloy cylinder cover of described cross section controllable type metal pattern die gained (control cross section) casting technique of verting be: the first step is coremaking: aluminum alloy cylinder cover sand core of water jacket, entering and exhaust channel core, oil pocket core and rising head core are made respectively and assembled; Second step is lower core, matched moulds (as shown in Figure 1): described relevant core order is in accordance with regulations progressively put into metal pattern die, and compress core by two side forms and two ends mould matched moulds, prevent core occurrence positions skew in the process of verting; The 3rd step was casting ladle cast (as shown in Figure 2): metal pattern die is verted to 90 degree, make its cup filter mouth up, and pour aluminium liquid into cup from filtering mouthful (passing through screen pack); The 4th step is for tilt pouring (as shown in Figure 3): metal pattern die through first fast, after at a slow speed the speed control of the process of verting make metal pattern die vert, reset, because the barrier effect of control cross section baffle plate, metal pattern die is controlled speed and the time that aluminium liquid flows into die cavity by control aluminium liquid from the minimum sectional area that cup enters the foundry goods die cavity in upset, make aluminium liquid enter the foundry goods die cavity from air inlet side flaring rising head 8, again from middle spark plug rising head 9 and exhaust side flaring rising head 10 out, realize filling type at the uniform velocity and controlled characteristics; The 5th step is for solidifying: unlatching negative pressure ventilation device and water cooling plant, until casting solidification and obtain the aluminum alloy cylinder cover foundry goods.
The present invention utilizes gravity to vert control cross section casting filling at the uniform velocity and controlled characteristics, both realized that traditional bottom filling filled the principle of type, control its speed of filling type and time, reduced the drop of aluminium liquid arrival metal pattern die die cavity, realized again the solidification theory that the top pouring type temperature field distributes, be conducive to moulding and the feeding of cylinder head casting, especially foundry goods is produced pore, the defectives such as shrinkage cavity and porosity are significantly improved, can be according to the difformity of engine cylinder cover, utilize metal gravity to vert and control the casting technique in cross section, produce complex structure, wall is thin, mechanical performance is high, surface compact, the aluminum alloy cylinder cover foundry goods that color is glossy has a Mold Making cycle short, casting cost is low, production efficiency is high, yield rate is high, the qualification rate high.
Above-mentioned coremaking is when designing and producing, must consider location and the compression mode of each core in mould, core directly needs the viscose glue assembling mode between design core and the core in the situation of Design Orientation, guarantee that each core can both be compacted, to prevent that metal pattern is offset in it verts process, need core is according to the rules put into and is sequentially carried out lower core during lower core, the matched moulds of metal pattern die and the process of die sinking must operate according to the rules and carry out, to avoid occurring the phenomenons such as core fracture and drawing-die.
Utilize gravity to vert control cross section casting filling at the uniform velocity and controlled characteristics, namely realized the principle of filling type of traditional bottom filling, control its speed of filling type and time, reduced the drop of aluminium liquid arrival metal pattern die die cavity, realized again the solidification theory that the top pouring type temperature field distributes, be conducive to moulding and the feeding of cylinder head casting, especially foundry goods is produced pore, the characteristics that the defectives such as shrinkage cavity and porosity are significantly improved, adopt metal gravity to vert and control the cross section casting technique, comprise coremaking, lower core, matched moulds, mould verts to pouring position, the casting ladle cast, tilt pouring, open the technical factors such as negative pressure ventilation and water cooling plant.Water channel sand cores, entering and exhaust channel core and rising head oil pocket core are put into metal pattern die, by the matched moulds compression core of two side forms and two ends mould; Metal pattern die is verted to 90 degree by the gravity machine that verts, cup is filtered mouthful up, pour aluminium liquid into cup by a filter mouthful screen pack of placing; By parameter the vert speed of verting of machine of control gravity is set, realize first fast, after at a slow speed cavity filling process, control speed and the time that aluminium liquid flows into die cavity by control aluminium liquid from the minimum sectional area that cup enters die cavity simultaneously, realize filling type at the uniform velocity and controlled characteristics; After metal pattern die verts and resets, open blower fan and realize negative pressure ventilation, the gas that core in the metal pattern produces is discharged; Open the combustion chamber water cooling plant, make cylinder head casting under water-cooled condition, finish process of setting, obtain the cylinder head casting that key position has good mechanical properties; Cylinder head casting is solidified to the default time in metal pattern die after, die sinking is taken out cylinder head casting in the die cavity of metal pattern die, is placed on to continue cooling in the air, obtains qualified cylinder head casting afterwards after shaking sand, cutting the operations such as rising head, heat treatment, deburring.
Claims (2)
1. cross section controllable type metal pattern die, comprise cup (1), rising head core (2), forming module (3), liftout attachment (4), water cooling plant (5), negative pressure ventilation device (6), it is characterized in that: on the bottom of described cup (1) and in cup (1) and the intersection of rising head core (2), control cross section baffle plate (7) is housed.
2. the gravity tilted casting technique of the aluminum alloy cylinder cover of cross section according to claim 1 controllable type metal pattern die gained, it is characterized in that: the first step is coremaking: aluminum alloy cylinder cover sand core of water jacket, entering and exhaust channel core, oil pocket core and rising head core are made respectively and assembled; Second step is lower core, matched moulds: described relevant core order is in accordance with regulations progressively put into metal pattern die, and compress core by two side forms and two ends mould matched moulds, prevent core occurrence positions skew in the process of verting; The 3rd step was the casting ladle cast: metal pattern die is verted to 90 degree, make its cup filter mouth up, and pour aluminium liquid into cup from filtering mouth; The 4th step is for tilt pouring: metal pattern die through first fast, after at a slow speed the speed control of the process of verting make metal pattern die vert, reset, because the barrier effect of control cross section baffle plate, metal pattern die is controlled speed and the time that aluminium liquid flows into die cavity by control aluminium liquid from the minimum sectional area that cup enters the foundry goods die cavity in upset, make aluminium liquid enter the foundry goods die cavity from air inlet side flaring rising head, again from middle spark plug rising head and exhaust side flaring rising head out, realize filling type at the uniform velocity and controlled characteristics; The 5th step is for solidifying: unlatching negative pressure ventilation device and water cooling plant, until casting solidification and obtain the aluminum alloy cylinder cover foundry goods.
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Cited By (19)
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| CN103769539A (en) * | 2013-12-25 | 2014-05-07 | 温州瑞明工业股份有限公司 | Height-adjustable combustion chamber metal module and adjustment method thereof |
| CN103878310A (en) * | 2012-12-19 | 2014-06-25 | 上海爱仕达汽车零部件有限公司 | Cylinder cover casting die and casting method |
| CN105382242A (en) * | 2015-12-30 | 2016-03-09 | 上海爱仕达汽车零部件有限公司 | Casting process of cylinder cover |
| CN105458179A (en) * | 2016-01-15 | 2016-04-06 | 无锡蠡湖增压技术股份有限公司 | Metal mold with ventilation equipment |
| CN105834359A (en) * | 2016-06-07 | 2016-08-10 | 温州精越模具有限公司 | Casting mold of gravity casting machine |
| CN106141088A (en) * | 2015-04-22 | 2016-11-23 | 江西新德合汽配有限责任公司 | A kind of metal mold gravity casting method and casting mould |
| CN107199320A (en) * | 2017-07-07 | 2017-09-26 | 宁波全力机械模具有限公司 | Lower open die reversely verts gravity casting mold and pouring technology on aluminium alloy outlet pipe |
| CN108555248A (en) * | 2018-01-12 | 2018-09-21 | 广东肇庆动力金属股份有限公司 | A kind of casting method and casting mould of automobile engine water pump shell |
| CN108746499A (en) * | 2018-07-20 | 2018-11-06 | 佛山市和阳精密金属制品有限公司 | A kind of automobile engine cooling tube production mold |
| CN109396350A (en) * | 2017-12-29 | 2019-03-01 | 湖北航特装备制造股份有限公司 | A kind of half mould it is pre-filled can tilting type gravity foundry technology |
| CN109396356A (en) * | 2017-12-29 | 2019-03-01 | 湖北航特装备制造股份有限公司 | A kind of aluminum alloy chassis rear axle support metal mold gravity casting technique |
| CN109420745A (en) * | 2017-12-29 | 2019-03-05 | 湖北航特装备制造股份有限公司 | A kind of hollow thin-wall cast aluminium control arm metal gravity verts mold |
| CN110947937A (en) * | 2019-11-29 | 2020-04-03 | 中国第一汽车股份有限公司 | Gravity tilt casting method for sand module core of aluminum alloy cylinder cover |
| CN111069575A (en) * | 2019-11-21 | 2020-04-28 | 中国第一汽车股份有限公司 | Method for preparing aluminum alloy engine cylinder cover by using tilting casting process |
| CN111168044A (en) * | 2020-01-19 | 2020-05-19 | 四川省犍为恒益铝业有限公司 | Machining method for oil pipe shell after casting forming |
| CN112247072A (en) * | 2020-10-10 | 2021-01-22 | 安徽省巢湖市宏顺机械铸造有限公司 | Pouring process for mechanical casting |
| CN112475245A (en) * | 2020-11-25 | 2021-03-12 | 山东淄博燕峰活塞有限公司 | Filter base casting technology |
| CN112935237A (en) * | 2021-01-29 | 2021-06-11 | 南京特瑞线路器材有限公司 | Servo upset intelligence pouring production line of feeding of aluminum alloy mobile type |
| CN114472809A (en) * | 2022-01-27 | 2022-05-13 | 康普泰克压铸(三明)有限公司 | Cylinder cover forming die |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103878310A (en) * | 2012-12-19 | 2014-06-25 | 上海爱仕达汽车零部件有限公司 | Cylinder cover casting die and casting method |
| CN103878310B (en) * | 2012-12-19 | 2015-11-18 | 上海爱仕达汽车零部件有限公司 | A kind of cylinder head casting die and casting method |
| CN103769539A (en) * | 2013-12-25 | 2014-05-07 | 温州瑞明工业股份有限公司 | Height-adjustable combustion chamber metal module and adjustment method thereof |
| CN106141088A (en) * | 2015-04-22 | 2016-11-23 | 江西新德合汽配有限责任公司 | A kind of metal mold gravity casting method and casting mould |
| CN105382242A (en) * | 2015-12-30 | 2016-03-09 | 上海爱仕达汽车零部件有限公司 | Casting process of cylinder cover |
| CN105458179A (en) * | 2016-01-15 | 2016-04-06 | 无锡蠡湖增压技术股份有限公司 | Metal mold with ventilation equipment |
| CN105834359A (en) * | 2016-06-07 | 2016-08-10 | 温州精越模具有限公司 | Casting mold of gravity casting machine |
| CN107199320A (en) * | 2017-07-07 | 2017-09-26 | 宁波全力机械模具有限公司 | Lower open die reversely verts gravity casting mold and pouring technology on aluminium alloy outlet pipe |
| CN109396350A (en) * | 2017-12-29 | 2019-03-01 | 湖北航特装备制造股份有限公司 | A kind of half mould it is pre-filled can tilting type gravity foundry technology |
| CN109396356A (en) * | 2017-12-29 | 2019-03-01 | 湖北航特装备制造股份有限公司 | A kind of aluminum alloy chassis rear axle support metal mold gravity casting technique |
| CN109420745A (en) * | 2017-12-29 | 2019-03-05 | 湖北航特装备制造股份有限公司 | A kind of hollow thin-wall cast aluminium control arm metal gravity verts mold |
| CN109420745B (en) * | 2017-12-29 | 2024-02-02 | 湖北航特装备制造股份有限公司 | Metal type gravity tilting die for hollow thin-wall cast aluminum control arm |
| CN108555248A (en) * | 2018-01-12 | 2018-09-21 | 广东肇庆动力金属股份有限公司 | A kind of casting method and casting mould of automobile engine water pump shell |
| CN108746499A (en) * | 2018-07-20 | 2018-11-06 | 佛山市和阳精密金属制品有限公司 | A kind of automobile engine cooling tube production mold |
| CN111069575A (en) * | 2019-11-21 | 2020-04-28 | 中国第一汽车股份有限公司 | Method for preparing aluminum alloy engine cylinder cover by using tilting casting process |
| CN110947937A (en) * | 2019-11-29 | 2020-04-03 | 中国第一汽车股份有限公司 | Gravity tilt casting method for sand module core of aluminum alloy cylinder cover |
| CN111168044A (en) * | 2020-01-19 | 2020-05-19 | 四川省犍为恒益铝业有限公司 | Machining method for oil pipe shell after casting forming |
| CN112247072A (en) * | 2020-10-10 | 2021-01-22 | 安徽省巢湖市宏顺机械铸造有限公司 | Pouring process for mechanical casting |
| CN112475245A (en) * | 2020-11-25 | 2021-03-12 | 山东淄博燕峰活塞有限公司 | Filter base casting technology |
| CN112935237A (en) * | 2021-01-29 | 2021-06-11 | 南京特瑞线路器材有限公司 | Servo upset intelligence pouring production line of feeding of aluminum alloy mobile type |
| CN114472809A (en) * | 2022-01-27 | 2022-05-13 | 康普泰克压铸(三明)有限公司 | Cylinder cover forming die |
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Application publication date: 20130220 |