CN102784902B - Metal mold pressure regulating casting device - Google Patents
Metal mold pressure regulating casting device Download PDFInfo
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- CN102784902B CN102784902B CN201210207951.7A CN201210207951A CN102784902B CN 102784902 B CN102784902 B CN 102784902B CN 201210207951 A CN201210207951 A CN 201210207951A CN 102784902 B CN102784902 B CN 102784902B
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Abstract
The invention discloses a metal mold pressure regulating casting device and belongs to the field of metal mold antigravity casting. Compared with a two-section type tank body of a traditional pressure regulating casting device, namely a main machine system structure with an upper tank body and a lower tank body, the metal mold pressure regulating casting device is additionally provided with a middle tank body for installing necessary mechanical structures of a metal mold and an open-close mold. The upper tank body, the middle tank body and the lower tank body of the metal mold pressure regulating casting device are locked through a mechanical clamping ring mechanism to ensure sealing effect. The metal mold pressure regulating casting device can achieve casting forming through pressure regulating casting technology based on the metal mold, can be applied to sand mold, investment casting shuttering and plaster mold pressure regulating casting forming of castings and simultaneously can be applied to metal mold, sand mold, investment casting shuttering and plaster mold counter-pressure casting and low-pressure casting forming of castings. Therefore, the metal mold pressure regulating casting device is wide in application, and achieves good combination between pressure regulating casting and the metal mold.
Description
Technical field
The present invention is applied to metal mold antigravity casting field, relates to metal mold adjustable pressure casting equipment, and this metal mold adjustable pressure casting equipment is furnished with metal mold folding type mechanical mechanism, can realize the adjustable pressure casting function for metal mold.
Background technology
As everyone knows, permanent mold casting refers to molten metal gravity-assist pouring method is poured into metal mold, to obtain a kind of casting method of foundry goods.Permanent mold casting foundry goods has that excellent surface quality, dimensional accuracy are higher, dense internal organization, mechanical performance are good, production efficiency is compared with advantages of higher, produces so permanent mold casting is widely used in the non-ferrous alloy castings such as aluminium alloy.
Although permanent mold casting possesses above-mentioned advantage, but, adopt gravity-assist pouring method to pour into the foundry goods that metal mold obtains, still there are some insoluble technical problems.For example, be unfavorable for the foundry goods of feeding for contour structures complexity, if adopt permanent mold casting, the design of its running gate system has just been subject to the restriction of casting structure condition, is difficult to the final castings that meets technical requirement that obtains.Under this kind of situation, based on metal mold, carry out castable by the Countergravity casting method such as low pressure casting or counter-pressure casting, can effectively solve the Problems in forming that a part is unfavorable for the foundry goods of feeding, in addition, Countergravity casting method can further improve the internal soundness of foundry goods.
But, for structure, extremely complexity and internal soundness require high foundry goods, as the Shell-Class foundry goods of some aircraft engine fuel oil systems, even if adopt low pressure casting or counter-pressure casting method, finally also be difficult to obtain the castings that meets technical requirement, this just needs the more advanced foundry engieering method of application, to solve shaping and the internal soundness problem of this type of foundry goods.
Adjustable pressure casting is a kind of more conventional low pressure casting and the more advanced Counter-gravity Casting of counter-pressure casting, adjustable pressure casting technology is a kind of Counter-gravity Casting growing up in conventional counter-pressure casting technical foundation, and its main technique advantage comprises that vacuum melting and insulation, negative pressure are filled type, positive differential pressure solidifies etc.Adjustable pressure casting technology is the non-ferrous alloy casting taking aluminium alloy as representative, the state-of-the-art cast form technology of the intricate casting particularly requiring for Aero-Space industry high-quality of producing both at home and abroad at present.
Consult Fig. 1, existing adjustable pressure casting equipment is generally two sections of tank type structures that are made up of upper tank body 1 and lower tank 3, between two sections of tank bodies, is separated and is locked by retaining ring; In upper tank body 1, there are the sand mold or the investment casting formwork that are positioned on median septum 4; In lower tank 3, have insulation crucible 9, insert in the liquid of insulation crucible 9 stalk 8 one end, the sand mold of the other end and upper tank body 1 or investment casting formwork internal communication.When work, by controlling respectively upper tank body 1 and lower tank 3 cavity pressures, realize adjustable pressure casting.But the said equipment cannot arrange the necessary folding type of permanent mold casting mechanical mechanism, only can apply and the sand mold, the investment casting formwork etc. that do not need folding type mechanical mechanism, thereby cannot realize the combination application of adjustable pressure casting technology and metal mold.So, the existing blank that should still belong in the equipment of metal mold application adjustable pressure casting technology production foundry goods this technical field.
Summary of the invention
The object of the invention is, cannot realize the deficiency of the combination of adjustable pressure casting technology and metal mold in order to solve prior art, the invention provides a kind of metal mold adjustable pressure casting equipment, this equipment has can be to the mechanical mechanism of metal mold folding type, can realize the combination application of metal mold and adjustable pressure casting technology, and then realize based on metal mold application adjustable pressure casting technology, extremely complexity and internal soundness require high foundry goods to production contour structures.
Technical scheme of the present invention is: consult Fig. 2, a kind of metal mold adjustable pressure casting equipment, comprise successively upper tank body 1, middle tank body 2 and lower tank 3, between upper tank body 1 and middle tank body 2, between middle tank body 2 and lower tank 3, realize locking and separately by upper locking ring 14 and lower retaining ring 15 respectively; Median septum 4 is arranged at described middle tank body 2 bottoms, and middle tank body 2 and lower tank 3 are divided into two cavitys by described median septum 4; Metal mold formwork is placed on median septum 4 and its upper end flushes with tank body 2 upper ends; Metal type dies 7 is opened die closing mechanism 5 with level and is connected; Described level is opened die closing mechanism 5 and is run through middle tank body 2 sidewalls; In insulation crucible 9 in lower tank 3, it is molten metal; Stalk 8 is communicated with the cast gate of molten metal and metal mold formwork by the through hole on median septum 4; Upper canister incoming gas valve 11 and upper tank air bleeding valve 10 are realized the air pressure control of upper tank body 1; Lower canister incoming gas valve 13 and lower tank air bleeding valve 12 are realized the air pressure control of lower tank 3.
Described metal mold adjustable pressure casting equipment, in loosing core in needs top, the vertical die closing mechanism 6 of opening being connected with metal type dies 7 tops in addition; The described die closing mechanism 6 of vertically opening runs through upper tank body 1 top.
Three sections of tank bodies in above-mentioned metal mold adjustable pressure casting equipment, i.e. the manufacture of upper tank body 1, middle tank body 2 and lower tank 3 is installed all and is carried out according to pressure vessel technology standard, and physical dimension can be determined as required, for realizing the technical process of adjustable pressure casting.
The invention has the beneficial effects as follows: metal mold adjustable pressure casting equipment provided by the invention, for realizing the folding type of metal mold, mechanical mechanism for metal mold folding type has been installed on middle tank body, this mechanical mechanism is characterised in that, can realize the folding type of horizontal direction and the folding type of vertical direction, the action of folding type drives by the hydraulic jack of hydraulic system, and wherein level is opened die closing mechanism and is linked at middle tank body middle part, vertically opens die closing mechanism and is linked at upper tank body top.For driving out the hydraulic cylinder of die closing mechanism to be fixed on outside tank body, the casting mold that connects tank interior by movable sealing bar link chain is installed connecting plate.This metal mold adjustable pressure casting equipment solution prior art cannot realize the deficiency of the combination of adjustable pressure casting technology and metal mold, can realize the combination application of metal mold and adjustable pressure casting technology, and then realize based on metal mold application adjustable pressure casting technology, extremely complexity and internal soundness require high foundry goods to production contour structures.
Brief description of the drawings
Fig. 1 is the schematic diagram that represents the upper and lower two-part tank body of existing adjustable pressure casting equipment host computer system structure;
Fig. 2 is the schematic diagram that represents each system composition of metal mold adjustable pressure casting equipment of the present invention.
Fig. 3 is the schematic diagram that represents the syllogic tank body host computer system structure of metal mold adjustable pressure casting equipment of the present invention;
Concrete embodiment
Below, with reference to the accompanying drawings of several detailed description of the invention of metal mold adjustable pressure casting equipment according to the present invention.
Embodiment mono-
Consult Fig. 2, the present embodiment provides a kind of application example of applying metal mold adjustable pressure casting equipment provided by the invention and carrying out metal mold adjustable pressure casting.
Metal mold adjustable pressure casting equipment in the present embodiment, comprises upper tank body 1, middle tank body 2 and lower tank 3 successively, between upper tank body 1 and middle tank body 2, between middle tank body 2 and lower tank 3, realizes locking and separately respectively by upper locking ring 14 and lower retaining ring 15; Median septum 4 is arranged at described middle tank body 2 bottoms, and middle tank body 2 and lower tank 3 are divided into two cavitys by described median septum 4; Metal mold formwork is placed on median septum 4 and its upper end flushes with tank body 2 upper ends; Metal type dies 7 is opened die closing mechanism 5 with level and is connected; Described level is opened die closing mechanism 5 and is run through middle tank body 2 sidewalls; Loose core because the present embodiment needs top, therefore have the vertical die closing mechanism 6 of opening being connected with metal type dies 7 tops simultaneously; The described die closing mechanism 6 of vertically opening runs through upper tank body 1 top; In insulation crucible 9 in lower tank 3, be the aluminium liquid as founding materials in the present embodiment; Stalk 8 is communicated with the cast gate of aluminium liquid and metal mold formwork by the through hole on median septum 4; Upper canister incoming gas valve 11 and upper tank air bleeding valve 10 are realized the air pressure control of upper tank body 1; Lower canister incoming gas valve 13 and lower tank air bleeding valve 12 are realized the air pressure control of lower tank 3.
When metal mold adjustable pressure casting equipment in use the present embodiment carries out metal mold adjustable pressure casting, can carry out according to following technological process:
First melted aluminium liquid is poured in insulation crucible 9, packed into stalk 8 is rear to be incubated aluminium liquid.Now, after middle tank body 2 is aimed at lower tank 3, by after lower retaining ring 15 lock sealings, the open form direction of opening die closing mechanism 5 according to level is opened this and is opened die closing mechanism, starts to carry out metal type dies 7 and installs.When metal type dies 7 is installed, the cast gate of metal type dies 7 and stalk 8 are aligned, subsequently metal type dies 7 and level are opened to die closing mechanism 5 and couple together, metal type dies 7 is coupled together with the vertical die closing mechanism 6 of opening simultaneously.Treat metal type dies 7 and level open die closing mechanism 5 with vertical open die closing mechanism 6 and be connected after, mould assembly puts in place.Upper tank body 1 is aimed to locking with middle tank body 2, by the mechanical snap ring mechanism locking of upper locking ring 14, complete that upper tank body 1, middle tank body 2 and 3 three sections of tank bodies of lower tank are intact closes sealing, now upper tank body 1 is communicated with completely with middle tank body 2, between middle tank body 2 and lower tank 3, is separated by median septum 4.
Tank body is closed after sealing, opens upper tank air bleeding valve 11 and lower tank air bleeding valve 13, the top that median septum 4 is separated simultaneously, be upper tank body 1 and middle tank body 2, with bottom, lower tank 3 is synchronously evacuated to the negative pressure value of technological requirement by vacuum system, closes subsequently vacuum system.After time delay 3～5 seconds, open upper canister incoming gas valve 10 and lower canister incoming gas valve 13 according to technological requirement, ventilate to lower tank by air-channel system, produce the positive differential pressure between the upper and lower two parts of median septum 4 with this.Now, the interior aluminium liquid of insulation crucible 9 is full of metal type dies 7 along stalk 8 under positive differential pressure effect, enter the adjustable pressure casting crust stage, continue to open canister incoming gas valve 10 and lower canister incoming gas valve 13 simultaneously, keep pressure reduction stable, thereby make median septum 4 tops, be i.e. upper tank body 1 and middle tank body 2, bottom, be the quick air inlet of lower tank 3, start casting solidification process.Solidify after end, in unlatching, tank air bleeding valve 11 and lower tank air bleeding valve 13 complete after tank body pressure release, open the upper locking ring 14 between upper tank body 1 and middle tank body 2, sling after upper tank body 1, open the level of connection metal mould 7 and open die closing mechanism 5 and the vertical die closing mechanism 6 of opening, take out foundry goods, complete a working cycles, after cleaning metal type dies 7, can carry out next working cycle process according to said process.
Embodiment bis-
Consult Fig. 2, the present embodiment provides a kind of application example that metal mold adjustable pressure casting equipment provided by the invention carries out metal mold counter-pressure casting of applying.
Metal mold adjustable pressure casting equipment in the present embodiment, comprises upper tank body 1, middle tank body 2 and lower tank 3 successively, between upper tank body 1 and middle tank body 2, between middle tank body 2 and lower tank 3, realizes locking and separately respectively by upper locking ring 14 and lower retaining ring 15; Median septum 4 is arranged at described middle tank body 2 bottoms, and middle tank body 2 and lower tank 3 are divided into two cavitys by described median septum 4; Metal mold formwork is placed on median septum 4 and its upper end flushes with tank body 2 upper ends; Metal type dies 7 is opened die closing mechanism 5 with level and is connected; Described level is opened die closing mechanism 5 and is run through middle tank body 2 sidewalls; Loose core because the present embodiment needs top, therefore have the vertical die closing mechanism 6 of opening being connected with metal type dies 7 tops simultaneously; The described die closing mechanism 6 of vertically opening runs through upper tank body 1 top; In insulation crucible 9 in lower tank 3, be the aluminium liquid as founding materials in the present embodiment; Stalk 8 is communicated with the cast gate of aluminium liquid and metal mold formwork by the through hole on median septum 4; Upper canister incoming gas valve 11 and upper tank air bleeding valve 10 are realized the air pressure control of upper tank body 1; Lower canister incoming gas valve 13 and lower tank air bleeding valve 12 are realized the air pressure control of lower tank 3.
When metal mold adjustable pressure casting equipment in use the present embodiment carries out metal mold counter-pressure casting, can carry out according to following technological process:
First melted aluminium liquid is poured in insulation crucible 9, packed into stalk 8 is rear to be incubated aluminium liquid.Now, after middle tank body 2 is aimed at lower tank 3, by after lower retaining ring 15 lock sealings, the open form direction of opening die closing mechanism 5 according to level is opened this and is opened die closing mechanism, starts to carry out metal type dies 7 and installs.When metal type dies 7 is installed, the cast gate of metal type dies 7 and stalk 8 are aligned, subsequently metal type dies 7 and level are opened to die closing mechanism 5 and couple together, metal type dies 7 is coupled together with the vertical die closing mechanism 6 of opening simultaneously.Treat metal type dies 7 and level open die closing mechanism 5 with vertical open die closing mechanism 6 and be connected after, mould assembly puts in place.Upper tank body 1 is aimed to locking with middle tank body 2, by the mechanical snap ring mechanism locking of upper locking ring 14, complete that upper tank body 1, middle tank body 2 and 3 three sections of tank bodies of lower tank are intact closes sealing, now upper tank body 1 is communicated with completely with middle tank body 2, between middle tank body 2 and lower tank 3, is separated by median septum 4.
Tank body is closed after sealing, open upper tank air bleeding valve 11 and lower tank air bleeding valve 13, the top that median septum 4 is separated, i.e. upper tank body 1 and middle tank body 2 and bottom simultaneously, be lower tank 3 is synchronously evacuated to technological requirement negative pressure value by vacuum system, close subsequently vacuum system.After time delay 3～5 seconds, open upper canister incoming gas valve 10 and lower canister incoming gas valve 13 according to technological requirement, ventilate to lower tank 3 by air-channel system, produce the positive differential pressure between the upper and lower two parts of median septum 4 with this.Now, the aluminium liquid of insulation in crucible 9 is full of metal type dies 7 along stalk 8 under positive differential pressure effect to be completed and fills type, now keep filling that type positive differential pressure is constant to be solidified aluminium liquid pressurize in metal type dies 7 die cavities, after solidifying end, in unlatching, tank air bleeding valve 11 and lower tank air bleeding valve 13 complete after tank body pressure release, open the upper locking ring 14 between upper tank body 1 and middle tank body 2, sling after upper tank body 9, open the level of connection metal mould 7 and open die closing mechanism 5 and the vertical die closing mechanism 6 of opening, take out foundry goods, complete a working cycles, after cleaning metal type dies 7, can carry out next working cycle process according to said process.
Different from metal mold adjustable pressure casting process in embodiment 1 is, metal mold counter-pressure casting process is after positive differential pressure condition lower charging type finishes, do not need to continue to open canister incoming gas valve 10 and lower canister incoming gas valve 13 keeps pressure reduction stably aluminium liquid in metal type dies 7 die cavities to be carried out to pressure regulation solidifying, solidify and only continue to keep original pressure reduction to carry out pressurize to aluminium liquid in die cavity simultaneously again.
Embodiment tri-
Consult Fig. 3, the present embodiment provides a kind of application example of applying metal mold adjustable pressure casting equipment provided by the invention and carrying out metal-mold low-pressure casting.
Metal mold adjustable pressure casting equipment in the present embodiment, comprises middle tank body 2 and lower tank 3 successively, between middle tank body 2 and lower tank 3, is realized locking and is separated by lower retaining ring 15; Median septum 4 is arranged at described middle tank body 2 bottoms, and middle tank body 2 and lower tank 3 are divided into two cavitys by described median septum 4; Metal mold formwork is placed on median septum 4 and its upper end flushes with tank body 2 upper ends; Metal type dies 7 is opened die closing mechanism 5 with level and is connected; Described level is opened die closing mechanism 5 and is run through middle tank body 2 sidewalls; Loose core because the present embodiment does not need top, therefore do not need vertically to open die closing mechanism 6; In insulation crucible 9 in lower tank 3, be the aluminium liquid as founding materials in the present embodiment; Stalk 8 is communicated with the cast gate of aluminium liquid and metal mold formwork by the through hole on median septum 4; Lower canister incoming gas valve 13 and lower tank air bleeding valve 12 are realized the air pressure control of lower tank 3.
When metal mold adjustable pressure casting equipment in use the present embodiment carries out metal-mold low-pressure casting, can carry out according to following technological process:
First melted aluminium liquid is poured in insulation crucible 9, packed into stalk 8 is rear to be incubated aluminium liquid.Now, after middle tank body 2 is aimed at lower tank 3, by after lower retaining ring 15 lock sealings, the open form direction of opening die closing mechanism 5 according to level is opened this and is opened die closing mechanism, starts to carry out metal type dies 7 and installs.When metal type dies 7 is installed, the cast gate of metal type dies 7 and stalk 8 are aligned, subsequently metal type dies 7 and level are opened to die closing mechanism 5 and couple together.After treating that metal type dies 7 and level are opened die closing mechanism 5 and be connected, mould assembly puts in place and prepares to pour into a mould, solidify.When low-pressure casting, tank body is closed after sealing, open lower canister incoming gas valve 13 is filled with aluminium liquid and in metal type dies 7, realizes cavity filling process under low pressure effect, fill and regulate lower canister incoming gas valve 13 to crust after type to solidify, after crust, continue to regulate lower canister incoming gas valve 13 to carry out supercharging and solidify, until solidified.Solidify after end, close lower canister incoming gas valve (13), open the level of connection metal mould 7 and open die closing mechanism 5, take out foundry goods, complete a working cycles, after cleaning metal type dies 7, can carry out next working cycle process according to said process.
Different from metal mold counter-pressure casting process in metal mold adjustable pressure casting, embodiment bis-in embodiment mono-is, metal-mold low-pressure casting process in the present embodiment only completes Filling Processes of Castings, solidifies under lower tank 3 inlet air conditions, does not need to set up the upper and lower two-part pressure reduction of tank body.
Embodiment tetra-
Consult Fig. 2, the present embodiment provides a kind of application example of applying metal mold adjustable pressure casting equipment provided by the invention and carrying out sand mold, investment casting formwork pressure regulation, differential pressure and low pressure casting.
Metal mold adjustable pressure casting equipment in the present embodiment, comprises upper tank body 1, middle tank body 2 and lower tank 3 successively, between upper tank body 1 and middle tank body 2, between middle tank body 2 and lower tank 3, realizes locking and separately respectively by upper locking ring 14 and lower retaining ring 15; Median septum 4 is arranged at described middle tank body 2 bottoms, and middle tank body 2 and lower tank 3 are divided into two cavitys by described median septum 4; Metal mold formwork is placed on median septum 4 and its upper end flushes with tank body 2 upper ends; Sand mold, investment casting formwork are opened die closing mechanism 5 with level and are connected; Described level is opened die closing mechanism 5 and is run through middle tank body 2 sidewalls; Loose core because the present embodiment needs top, therefore have the vertical die closing mechanism 6 of opening being connected with sand mold, investment casting formwork top simultaneously; The described die closing mechanism 6 of vertically opening runs through upper tank body 1 top; In insulation crucible 9 in lower tank 3, be the aluminium liquid as founding materials in the present embodiment; Stalk 8 is communicated with the cast gate of aluminium liquid and metal mold formwork by the through hole on median septum 4; Upper canister incoming gas valve 11 and upper tank air bleeding valve 10 are realized the air pressure control of upper tank body 1; Lower canister incoming gas valve 13 and lower tank air bleeding valve 12 are realized the air pressure control of lower tank 3.
(1), when the metal mold adjustable pressure casting equipment in use the present embodiment carries out sand mold, investment casting formwork adjustable pressure casting, can carry out according to following technological process:
First melted aluminium liquid is poured in insulation crucible 9, packed into stalk 8 is rear to be incubated aluminium liquid.Now, middle tank body 2 is aimed at rear by after lower retaining ring 15 lock sealings with lower tank 3, the open form direction of opening die closing mechanism 5 according to level is opened this and is opened die closing mechanism to maximum open location, by sand mold, investment casting formwork cast gate directly aim at stalk 8 mouths of pipe and fixing after, upper tank body 1 is aimed to locking with middle tank body 2, by the mechanical snap ring mechanism locking of upper locking ring 14, complete that upper tank body 1, middle tank body 2 and 3 three sections of tank bodies of lower tank are intact closes sealing, now upper tank body 1 is communicated with completely with middle tank body 2, between middle tank body 2 and lower tank 3, is separated by median septum 4.
Tank body is closed after sealing, open upper tank air bleeding valve 11 and lower tank air bleeding valve 13 simultaneously) top that median septum 4 is separated, i.e. upper tank body 1 and middle tank body 2, with bottom, be lower tank 3 is synchronously evacuated to technological requirement negative pressure value by vacuum system, close subsequently vacuum system.After time delay 3～5 seconds, open upper canister incoming gas valve 10 and lower canister incoming gas valve 13 according to technological requirement, ventilate to lower tank by air-channel system, produce the positive differential pressure between the upper and lower two parts of median septum 4 with this.Now, in holding furnace, aluminium alloy is full of sand mold, investment casting formwork along stalk 8 under positive differential pressure effect, enter the adjustable pressure casting crust stage, continue to open canister incoming gas valve 10 and lower canister incoming gas valve 13 simultaneously, keep pressure reduction stable, thereby make median septum top, be i.e. upper tank body 1 and middle tank body 2, bottom, be the quick air inlet of lower tank 3, start casting solidification process.Solidify after end, in unlatching, tank air bleeding valve 11 and lower tank air bleeding valve 13 complete after tank body pressure release, open the upper locking ring 14 between upper tank body 1 and middle tank body 2, sling after upper tank body 1, directly take out after sand mold, investment casting formwork, complete a working cycles.
(2), when the metal mold adjustable pressure casting equipment in use the present embodiment carries out sand mold, investment casting formwork counter-pressure casting, can carry out according to following technological process:
First melted aluminium liquid is poured in insulation crucible 9, packed into stalk 8 is rear to be incubated aluminium liquid.Now, middle tank body 2 is aimed at rear by after lower retaining ring 15 lock sealings with lower tank 3, the open form direction of opening die closing mechanism 5 according to level is opened this and is opened die closing mechanism to maximum open location, by sand mold, investment casting formwork cast gate directly aim at stalk 8 mouths of pipe and fixing after, upper tank body 1 is aimed to locking with middle tank body 2, by the mechanical snap ring mechanism locking of upper locking ring 14, complete that upper tank body 1, middle tank body 2 and 3 three sections of tank bodies of lower tank are intact closes sealing, now upper tank body 1 is communicated with completely with middle tank body 2, between middle tank body 2 and lower tank 3, is separated by median septum 4.
Tank body is closed after sealing, opens upper tank air bleeding valve 11 and lower tank air bleeding valve 13, the top that median septum 4 is separated simultaneously, be upper tank body 1 and middle tank body 2, with bottom, lower tank 3 is synchronously evacuated to the negative pressure value of technological requirement by vacuum system, closes subsequently vacuum system.After time delay 3～5 seconds, open upper canister incoming gas valve 10 and lower canister incoming gas valve 13 according to technological requirement, ventilate to lower tank by air-channel system, produce the positive differential pressure between the upper and lower two parts of median septum 4 with this.Now, in holding furnace aluminium alloy under positive differential pressure effect along stalk be full of sand mold, investment casting formwork completes and fills type, now keep filling that type positive differential pressure is constant to be solidified aluminium liquid pressurize in sand mold, investment casting shell cavity, after solidifying end, in unlatching, tank air bleeding valve 11 and lower tank air bleeding valve 13 complete after tank body pressure release, open the upper locking ring 14 between upper tank body 1 and middle tank body 2, sling after upper tank body 1, take out casting mold, complete a working cycles, after cleaning sand mold, investment casting formwork, can carry out next working cycle process according to said process.
(2), when the metal mold adjustable pressure casting equipment in use the present embodiment carries out sand mold, investment casting formwork low pressure casting, can carry out according to following technological process:
First melted aluminium liquid is poured in insulation crucible 9, packed into stalk 8 is rear to be incubated aluminium liquid.Now, middle tank body 2 is aimed at rear by after lower retaining ring 15 lock sealings with lower tank 3, the open form direction of opening die closing mechanism 5 according to level is opened this and is opened die closing mechanism to maximum open location, by sand mold, investment casting formwork cast gate directly aim at stalk 8 mouths of pipe and fixing after, prepare to carry out low-pressure casting, process of setting.When low-pressure casting, tank body is closed after sealing, open lower canister incoming gas valve 13 is filled with aluminium liquid and in sand mold, investment casting formwork, realizes cavity filling process under low pressure effect, fill and regulate lower canister incoming gas valve 13 to crust after type to solidify, after crust, continue to regulate lower canister incoming gas valve 13 to carry out supercharging and solidify, until solidified.Solidify after end, close lower canister incoming gas valve 13, take out casting mold, complete a working cycles, after cleaning sand mold, investment casting formwork, can carry out next working cycle process according to said process.
From above four embodiment, the metal mold adjustable pressure casting equipment that the present invention proposes can be realized based on metal mold foundry goods is passed through to the cast form of adjustable pressure casting technology, and can be applied to the adjustable pressure casting that sand mold, investment casting formwork and gypsum mould etc. carry out foundry goods and be shaped, also can be used in metal mold, sand mold, investment casting formwork and gypsum mould etc. simultaneously and carry out the counter-pressure casting and low pressure casting shaping of foundry goods.Therefore, apply very extensively, realized the good combination between adjustable pressure casting and metal mold.
Claims (2)
1. a metal mold adjustable pressure casting equipment, it is characterized in that: comprise successively upper tank body (1), middle tank body (2) and lower tank (3), between upper tank body (1) and middle tank body (2), between middle tank body (2) and lower tank (3), realize locking and separate by upper locking ring (14) and lower retaining ring (15) respectively; Median septum (4) is arranged at described middle tank body (2) bottom, and middle tank body (2) and lower tank (3) are divided into two cavitys by described median septum (4); Metal mold formwork is placed in median septum (4) above and its upper end flushes with tank body (2) upper end; Metal type dies (7) is opened die closing mechanism (5) with level and is connected; Described level is opened die closing mechanism (5) and is run through middle tank body (2) sidewall; In insulation crucible (9) in lower tank (3), it is molten metal; Stalk (8) is communicated with the cast gate of molten metal and metal mold formwork by the through hole on median septum (4); Upper canister incoming gas valve (11) and upper tank air bleeding valve (10) are realized the air pressure control of upper tank body (1); Lower canister incoming gas valve (13) and lower tank air bleeding valve (12) are realized the air pressure control of lower tank (3).
2. a metal mold adjustable pressure casting equipment as claimed in claim 1, is characterized in that: the vertical die closing mechanism (6) of opening being connected with metal type dies (7) top in addition; The described die closing mechanism (6) of vertically opening runs through upper tank body (1) top.
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| CN105665680B (en) * | 2016-04-06 | 2018-03-09 | 西安新玖大建设工程有限公司 | A kind of differential pressure stove and control method |
| CN106563786A (en) * | 2016-10-30 | 2017-04-19 | 山西汾西重工有限责任公司 | Differential pressure pouring casting method of particle reinforced aluminum-based composite material |
| CN107866546B (en) * | 2017-12-18 | 2021-02-23 | 广东鸿泰科技股份有限公司 | Hollow frame design and differential pressure casting method |
| CN108453240B (en) * | 2018-02-08 | 2020-04-17 | 中国兵器科学研究院宁波分院 | Differential pressure casting method of aluminum alloy shell for waterborne propulsion device of armored vehicle |
| CN109865818B (en) * | 2018-03-01 | 2023-11-03 | 诸城航大新材料技术有限公司 | Locking device of differential pressure casting machine |
| CN109550899A (en) * | 2018-11-27 | 2019-04-02 | 上海航天精密机械研究所 | Fusible pattern and counter-pressure casting combined shaping method |
| CN115319068A (en) * | 2022-08-31 | 2022-11-11 | 中国兵器装备集团西南技术工程研究所 | Well tank structure and casting machine major structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63273561A (en) * | 1987-05-02 | 1988-11-10 | Isuzu Seisakusho:Kk | Method and apparatus for controlling pressure |
| CN1034876A (en) * | 1988-09-21 | 1989-08-23 | 西北工业大学 | A kind of pressure-adjusting casting method |
| CN1613578A (en) * | 2004-09-29 | 2005-05-11 | 北京交通大学 | Pressure adjustable casting method and crucible therefor |
| CN201150983Y (en) * | 2008-01-31 | 2008-11-19 | 营口经济技术开发区金达合金铸造有限公司 | Mechanism of low pressure casting machine for opening and closing cast |
| CN102398014A (en) * | 2011-11-15 | 2012-04-04 | 上海交通大学 | Casting device of low tension fine grain and method thereof |
-
2012
- 2012-06-21 CN CN201210207951.7A patent/CN102784902B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63273561A (en) * | 1987-05-02 | 1988-11-10 | Isuzu Seisakusho:Kk | Method and apparatus for controlling pressure |
| CN1034876A (en) * | 1988-09-21 | 1989-08-23 | 西北工业大学 | A kind of pressure-adjusting casting method |
| CN1613578A (en) * | 2004-09-29 | 2005-05-11 | 北京交通大学 | Pressure adjustable casting method and crucible therefor |
| CN201150983Y (en) * | 2008-01-31 | 2008-11-19 | 营口经济技术开发区金达合金铸造有限公司 | Mechanism of low pressure casting machine for opening and closing cast |
| CN102398014A (en) * | 2011-11-15 | 2012-04-04 | 上海交通大学 | Casting device of low tension fine grain and method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 大型复杂薄壁铸件高品质高精度调压铸造技术;王猛等;《铸造技术》;20040531;第25卷(第5期);353-358 * |
| 王猛等.大型复杂薄壁铸件高品质高精度调压铸造技术.《铸造技术》.2004,第25卷(第5期),353-358. |
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