CN204449267U - Supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device - Google Patents
Supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device Download PDFInfo
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- CN204449267U CN204449267U CN201520032255.6U CN201520032255U CN204449267U CN 204449267 U CN204449267 U CN 204449267U CN 201520032255 U CN201520032255 U CN 201520032255U CN 204449267 U CN204449267 U CN 204449267U
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- vacuum
- stalk
- pipe
- multimode
- crucible
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Abstract
The utility model relates to a kind of supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device, belongs to casting field.This device arranges cover plate at crucible top, and the lower end of taper stalk extends in the aluminium liquid in crucible, and the upper end of stalk is arranged on cover plate; Stalk top arranges apertured partition and gypsum shell, and stalk and gypsum shell adopt a pipe multimode, are communicated between stalk with gypsum shell by the through hole on apertured partition; The arranged outside protective sleeve of gypsum shell, the top of gypsum shell arranges chill, is sealed between protective sleeve and chill by sealing ring, and protective sleeve and chill form vacuum sealed cover; Chill is offered the vacuum line communicated with the vacuum sealed cover inner chamber at gypsum shell place, cover plate is offered the malleation gas circuit communicated with crucible interior.In order to the technological parameter carrying out each vacuum forming, positive piezocrystallization and process of setting is constant, twice casting bay pressure differential need be compensated, implement aluminium liquid liquid level auto-compensation in stalk.
Description
Technical field
The utility model relates to a kind of supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device, belongs to casting field.
Background technology
Turbocharger is that requisite parts are discharged in Modern Engine raising power, fuel-economizing and improvement, and wherein casting compressor impeller is the core key part of turbocharger, because compressor impeller adopts casting method gained.At present, the casting method of domestic supercharger impeller is mainly suction pouring and low pressure casting two kinds, and the process efficiency of suction pouring is higher, but the uniformity of product will ensure by manual operation, be deteriorated comparatively large, the impeller inherent quality of casting can not meet customer requirement completely.The impeller uniformity of low pressure casting is better, and inherent quality is higher, but production efficiency is low, production cost is high.Vacuum adjustable pressure casting mechanism is also come out very early, is also applied to the casting of thin-walled, complex parts both at home and abroad, but is not yet applied to the pump vane casting of booster.
Utility model content
The purpose of this utility model is to provide a kind of supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device, solves prior art mesolow and casts the problems such as the production efficiency existed is low, production cost is high.
The technical solution of the utility model is:
A kind of special purpose device of supercharger impeller " a pipe multimode " vacuum adjustable pressure casting, this device comprises: cover plate, crucible, stalk, aluminium liquid, malleation gas circuit, vacuum line, gypsum shell, chill, sealing ring, protective sleeve, and concrete structure is as follows:
Crucible top arranges cover plate, and the lower end of taper stalk extends in the aluminium liquid in crucible, and the upper end of stalk is arranged on cover plate; Stalk top arranges apertured partition and gypsum shell, and stalk and gypsum shell adopt a pipe multimode, are communicated between stalk with gypsum shell by the through hole on apertured partition; The arranged outside protective sleeve of gypsum shell, the top of gypsum shell arranges chill, is sealed between protective sleeve and chill by sealing ring, and protective sleeve and chill form vacuum sealed cover; Chill is offered the vacuum line communicated with the vacuum sealed cover inner chamber at gypsum shell place, cover plate is offered the malleation gas circuit communicated with crucible interior.
The special purpose device of described supercharger impeller " a pipe multimode " vacuum adjustable pressure casting, corresponding more than five the gypsum shells of each stalk.
The special purpose device of described supercharger impeller " a pipe multimode " vacuum adjustable pressure casting, stalk is the integrative-structure that column tube and conical pipe are formed, and is arranged on cover plate, is extended in the aluminium liquid in crucible by conical pipe by column tube part.
The special purpose device of described supercharger impeller " a pipe multimode " vacuum adjustable pressure casting, one end of vacuum line communicates with the vacuum sealed cover inner chamber at gypsum shell place, the other end of vacuum line is connected with vavuum pump by pipeline, and the pipeline that described vacuum line is connected with vavuum pump arranges vacuum controller, vacuum tank.
The special purpose device of described supercharger impeller " a pipe multimode " vacuum adjustable pressure casting, one end of malleation gas circuit communicates with crucible interior, the other end of malleation gas circuit is connected with compressed air cylinder by pipeline, and the pipeline that malleation gas circuit is connected with compressed air cylinder arranges positive pressure controller.
Design philosophy of the present utility model is:
The utility model is used for automobile booster part--the production of Birmasil impeller, for existing low-pressure casting technique, frock is " pipe one mould " mode, maximum 4 of the piece count of casting each time, the problems such as efficiency is general, the utility model has adopted " a pipe multimode " greatly and has enhanced productivity.Adopt " a pipe multimode " to be not only improve production efficiency, the more important thing is the quality that comprehensively will improve foundry goods, adopt vacuum adjustable pressure casting supercharger impeller for this reason.But completely go to carry out according to vacuum voltage-regulation principle, certainly will set up vacuum cavitations in crucible at high operating temperatures, such complete equipment is complicated, and is unsuitable for the pattern of impeller production in enormous quantities; For this reason, vacuum pressure regulation method is adjusted targetedly.Because the aluminium liquid in crucible after casting all reduces at every turn, cause liquid aluminum in crucible to decline, thus affect the technological parameter of negative pressure and malleation, adopt level compensation technology for this reason, complete the pressure differential of compensation twice casting bay.
Advantage of the present utility model and beneficial effect are:
1, the utility model is for the design feature of supercharger impeller and very large market demand, on the basis of vacuum pressure regulation, adjusts targetedly.Thus make the casting flaw of the supercharger impeller foundry goods of casting obtain more effectively controlling, tensile strength, the percentage elongation of foundry goods all improve, and obtain thinner, more complicated, finer and close impeller casting.
2, owing to have employed " a pipe multimode ", production efficiency is substantially increased.Further, the raising of production efficiency while, also shorten the total residence time of aluminium liquid in crucible, improve the loss of aluminium liquid chemical composition in crucible greatly, promote casting quality further.
3, the technological parameter in order to carry out each vacuum forming, positive piezocrystallization and process of setting is constant, must compensate twice casting bay pressure differential, make aluminium liquid liquid level auto-compensation in stalk.
Accompanying drawing explanation
Fig. 1-Fig. 2 is the structural representation of the utility model gypsum shell.
Fig. 3 is one of the utility model supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device schematic diagram.
Fig. 4 is the utility model supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device schematic diagram two.
In figure, 1 cover plate; 2 crucibles; 3 stalks; 4 aluminium liquid; 5 malleation gas circuits; 6 vacuum lines; 7 gypsum shells; 8 chills; 9 sealing rings; 10 protective sleeves; 11 apertured partition; 12 vacuum sealed covers.
Detailed description of the invention
As Figure 1-Figure 4; the special purpose device of the utility model supercharger impeller " a pipe multimode " vacuum adjustable pressure casting; mainly comprise: cover plate 1, crucible 2, stalk 3, aluminium liquid 4, malleation gas circuit 5, vacuum line 6, gypsum shell 7, chill 8, sealing ring 9, protective sleeve 10 etc., concrete structure is as follows:
As shown in Figure 3, crucible 2 top arranges cover plate 1, and the lower end of taper stalk 3 extends in the aluminium liquid 4 in crucible 2, and the upper end of stalk 3 is arranged on cover plate 1.Stalk 3 top arranges apertured partition 11 and gypsum shell 7, is communicated between stalk 3 with gypsum shell 7 by the through hole on apertured partition 11.The arranged outside protective sleeve 10 of gypsum shell 7, the top of gypsum shell 7 arranges chill 8, is sealed between protective sleeve 10 and chill 8 by sealing ring 9, and protective sleeve 10 and chill 8 form vacuum sealed cover.Chill 8 is offered the vacuum line 6 communicated with the vacuum sealed cover inner chamber at gypsum shell 7 place, cover plate 1 is offered the malleation gas circuit 5 communicated with crucible 2 inner chamber.
As Figure 1-Figure 2, stalk 3 and gypsum shell 7 adopt the corresponded manner of a pipe multimode (reach more than 5 moulds, be generally 5-24 mould).As Figure 3-Figure 4, stalk 3 is the integrative-structure that column tube and conical pipe are formed, and is arranged on cover plate 1, is extended in the aluminium liquid in crucible 2 by conical pipe by column tube part.
As shown in Figure 4, one end of vacuum line 6 communicates with vacuum sealed cover 12 inner chamber at gypsum shell 7 place, the other end of vacuum line 6 is connected with vavuum pump by pipeline, and the pipeline that described vacuum line 6 is connected with vavuum pump arranges vacuum controller, vacuum tank.One end of malleation gas circuit 5 communicates with crucible 2 inner chamber, the other end of malleation gas circuit 5 is connected with compressed air cylinder by pipeline, the pipeline that malleation gas circuit 5 is connected with compressed air cylinder arranges positive pressure controller, the mode that positive pressure controller controls simultaneously " level compensation ".
In the utility model, the effect of " level compensation " with control procedure is: in stalk 3 liquid level suspend height and crucible 2 in liquid level relevant with added force value.After once casting, in crucible 2, decrease the aluminium liquid equal with part gross weight in mold cavity, thus make in crucible 2 and liquid level decline in stalk 3.Return to liquid level in stalk 3 to suspend original height, Δ P pressure difference value must be compensated to the force value of input in crucible 2.Δ P pressure difference value according to relation between sectional area, liquid level falling head difference DELTA H in the gross weight of cast parts in mould and crucible 2, and can compensate original setup pressure value, achieves the pressure differential automatically completing compensation twice casting bay.
Relevant calculating formulas is as follows:
V＝m/ρ＝1/4πD
2×ΔH；
ΔP＝mg×ΔH；
The implication of parameters:
The gross mass m (Kg) of cast parts; Interior cross section average diameter D (m) of crucible; Each casting liquid level falling head difference DELTA H (m) in crucible; Liquid aluminium liquid density p (Kg/m
3); The pressure differential Δ P (MPa) that in crucible, twice casting bay need compensate; The aluminium liquid spent of at every turn casting in crucible amasss V (m
3).
The new method of the utility model supercharger impeller " a pipe multimode " vacuum adjustable pressure casting, adopt the special purpose device of Fig. 1-Fig. 4 supercharger impeller " a pipe multimode " vacuum adjustable pressure casting, detailed process is as follows:
Form the condition of certain vacuum degree (between 0.01-0.08MPa) in vacuum sealed cover under, liquid aluminium liquid 4 sucks the foundry goods die cavity of gypsum shell 7 along antigravity direction; Fill type complete after or fill in the type stage, when the vacuum of setting in the vacuum sealed cover 12 keeping foundry goods place, pressure regulation is carried out to the compressed-air actuated pressure inputted in crucible 2, needs to maintain in the force value of setting according to technique; After casting solidification completes, immediately to vacuum sealed cover 12 and crucible 2 pressure release.Wherein, vacuum cavitations, over-pressure control can adopt PLC.
In the prior art, the tensile strength of turbocharger castings generally at more than 320MPa, percentage elongation generally more than 4%.And after adopting the utility model, the tensile strength of turbocharger castings can at more than 350MPa, percentage elongation can more than 5.5%.
Result shows, this method ensure that foundry goods is at certain vacuum degree condition lower charging type, achieves again foundry goods crystallization at elevated pressures, solidifies, greatly strengthen the feeding capacity of foundry goods; And under the state that foundry goods has corresponding vacuum in vacuum sealed cover, the gas produced when gypsum shell can be met high temperature and the crystallization water etc. are got rid of in time, smoothly, effectively prevent the intrusion of filling gas in type and process of setting.Therefore, can make the pin hole of foundry goods, shrinkage cavity greatly reduces, tensile strength, percentage elongation other ways all comparable improve, and obtain thinner, more complicated, finer and close precision casting.
Claims (5)
1. the special purpose device of supercharger impeller " a pipe multimode " vacuum adjustable pressure casting; it is characterized in that; this device comprises: cover plate, crucible, stalk, aluminium liquid, malleation gas circuit, vacuum line, gypsum shell, chill, sealing ring, protective sleeve, and concrete structure is as follows:
Crucible top arranges cover plate, and the lower end of taper stalk extends in the aluminium liquid in crucible, and the upper end of stalk is arranged on cover plate; Stalk top arranges apertured partition and gypsum shell, and stalk and gypsum shell adopt a pipe multimode, are communicated between stalk with gypsum shell by the through hole on apertured partition; The arranged outside protective sleeve of gypsum shell, the top of gypsum shell arranges chill, is sealed between protective sleeve and chill by sealing ring, and protective sleeve and chill form vacuum sealed cover; Chill is offered the vacuum line communicated with the vacuum sealed cover inner chamber at gypsum shell place, cover plate is offered the malleation gas circuit communicated with crucible interior.
2. according to the special purpose device of supercharger impeller according to claim 1 " a pipe multimode " vacuum adjustable pressure casting, it is characterized in that, corresponding more than five the gypsum shells of each stalk.
3. according to the special purpose device of supercharger impeller according to claim 1 " a pipe multimode " vacuum adjustable pressure casting, it is characterized in that, stalk is the integrative-structure that column tube and conical pipe are formed, and is arranged on cover plate, is extended in the aluminium liquid in crucible by conical pipe by column tube part.
4. according to the special purpose device of supercharger impeller according to claim 1 " a pipe multimode " vacuum adjustable pressure casting, it is characterized in that, one end of vacuum line communicates with the vacuum sealed cover inner chamber at gypsum shell place, the other end of vacuum line is connected with vavuum pump by pipeline, and the pipeline that described vacuum line is connected with vavuum pump arranges vacuum controller, vacuum tank.
5. according to the special purpose device of supercharger impeller according to claim 1 " a pipe multimode " vacuum adjustable pressure casting, it is characterized in that, one end of malleation gas circuit communicates with crucible interior, the other end of malleation gas circuit is connected with compressed air cylinder by pipeline, and the pipeline that malleation gas circuit is connected with compressed air cylinder arranges positive pressure controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032255.6U CN204449267U (en) | 2015-01-16 | 2015-01-16 | Supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032255.6U CN204449267U (en) | 2015-01-16 | 2015-01-16 | Supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device |
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|---|---|
| CN204449267U true CN204449267U (en) | 2015-07-08 |
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|---|---|---|---|
| CN201520032255.6U Expired - Fee Related CN204449267U (en) | 2015-01-16 | 2015-01-16 | Supercharger impeller " a pipe multimode " vacuum adjustable pressure casting special purpose device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834401A (en) * | 2015-01-16 | 2016-08-10 | 凤城市合鑫机械制造有限公司 | Novel method for vacuum pressure-regulating casting of supercharger impeller in one-tube multi-mold manner and special-purpose device |
| CN109014134A (en) * | 2017-06-12 | 2018-12-18 | 科华控股股份有限公司 | A kind of heat resisting steel volute shell mould stacked box process for suction casting method |
-
2015
- 2015-01-16 CN CN201520032255.6U patent/CN204449267U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834401A (en) * | 2015-01-16 | 2016-08-10 | 凤城市合鑫机械制造有限公司 | Novel method for vacuum pressure-regulating casting of supercharger impeller in one-tube multi-mold manner and special-purpose device |
| CN105834401B (en) * | 2015-01-16 | 2018-04-17 | 凤城市合鑫机械制造有限公司 | One pipe multimode vacuum adjustable pressure casting new method of supercharger impeller and special purpose device |
| CN109014134A (en) * | 2017-06-12 | 2018-12-18 | 科华控股股份有限公司 | A kind of heat resisting steel volute shell mould stacked box process for suction casting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20180116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |