CN108246973A - Double flow path turbo-charger shell cast mold and casting method - Google Patents
Double flow path turbo-charger shell cast mold and casting method Download PDFInfo
- Publication number
- CN108246973A CN108246973A CN201810039864.2A CN201810039864A CN108246973A CN 108246973 A CN108246973 A CN 108246973A CN 201810039864 A CN201810039864 A CN 201810039864A CN 108246973 A CN108246973 A CN 108246973A
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- core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention provides a kind of Double flow path turbo-charger shell cast mold and casting methods, are related to sand casting technical field, and Double flow path turbo-charger shell cast mold includes upper shell core and lower shell core；Upper shell core and lower shell core are located at the junction of the same side equipped with the cast gate for placing sprue cup, after upper shell core and lower shell core fastening shell forming surface is formed in inside, shell forming surface is in communication with the outside by cast gate, shell forming surface includes the whirlpool head forming surface for being molded whirlpool head, and the side that whirlpool head forming surface is equipped with cast gate far from upper shell core and lower shell core is set；When cast gate is set upward, potting syrup being capable of covering shell forming surface.
Description
Technical field
The present invention relates to sand casting technical field, in particular to a kind of Double flow path turbo-charger shell cast
Mold and casting method.
Background technology
As country is more and more tighter to the limitation requirement of oil consumption and discharge, the trend of petrol engine miniaturization is more
Significantly, more harsh to low end performance and mapping requirement after Engine Downsizing, dual channel booster is than single channel supercharging
Device can significantly improve engine low end performance improves engine transient performance simultaneously, compared to single channel turbocharger, hair
Motivation use Double flow path turbo-charger after low speed torque improve 13% so that the peak torque minimum speed range of engine into
One step is to slow-speed of revolution Directional Extension, and engine promotes 18% in the mapping of 1500r/min external characteristics operating modes, in 2000r/
The mapping of min external characteristics operating modes promotes 8%, and Double flow path turbo-charger can preferably utilize the exhaust energy of engine
Power, it will be apparent that improve the low-speed performance and response performance of engine, and the wherein size and structure of whirlpool head and port plate is steady
Determine to play the role of the performance of Double flow path turbo-charger vital.
In the prior art, the shell of Double flow path turbo-charger is molded all the time by sand casting, and in casting process,
For being molded the top that the forming surface of whirlpool head and port plate in Double flow path turbo-charger is in entire forming surface, passing through water
When the mode of flat cast is poured into a mould into sandbox, it is not easy to be full of at whirlpool head and port plate, and because in top, easily assemble gas
The defects of body or shrinkage due to potting syrup, last molding casting at whirlpool head and port plate is easy to that shrinkage cavity occurs
And scrap, lead to low production efficiency, it is impossible to meet the needs of people.
Invention content
The purpose of the present invention is to provide a kind of Double flow path turbo-charger shell cast mold and casting method, to alleviate
It is of the prior art that whirlpool head and runner easily occur in actual production for casting the mold of Double flow path turbo-charger housing
The defects of partition board shrinkage cavity and the technical issues of cause low production efficiency.
The present invention provides a kind of Double flow path turbo-charger shell cast mold, including upper shell core and lower shell core；
The upper shell core and the lower shell core are located at the junction of the same side equipped with the cast gate for placing sprue cup, described
Upper shell core and the lower shell core form shell forming surface in inside after fastening, and the shell forming surface passes through the cast gate and the external world
Connection, the shell forming surface include the whirlpool head forming surface for being molded whirlpool head, and the whirlpool head forming surface is far from the upper shell core
The side of the cast gate is equipped with the lower shell core；
When the cast gate is set upward, potting syrup can cover the shell forming surface.
Further；The whirlpool head forming surface is arranged on the upper shell core, and is poured close to the upper shell core away from described
The side setting of mouth.
Further；The junction that the upper shell core and the lower shell core are equipped with the side of the cast gate is equipped with multiple exhausts
Hole.
Further；The shell forming surface is equipped with zirconium English powder coating.
Further；The sand core for being molded channel turbine and port plate is further included, the sand core is installed in described
Between upper shell core and the lower shell core.
Further；The sand core outer surface is equipped with zirconium English powder coating.
Further；The upper shell core, the lower shell core and the sand core are made of precoated sand.
The present invention also provides a kind of Double flow path turbo-charger shell cast methods, utilize channel turbine described above
Pressurizer shell casting mould is designed, and is in turn included the following steps：
S1：Upper shell core, lower shell core and sand core are made using core making machine；
S2：Shell forming surface brushing zircon flour coating on upper shell core and lower shell core, in sand core outer surface brushing zirconium English
Powder applies, and then carries out prebake to three；
S3：Sand core is fixedly held to lower shell core designated position, upper shell core is fastened with lower shell core；
S4：Cast gate, is then put setting by shell core and lower shell core upward vertically in drying；
S5：Sprue cup is placed at cast gate, internally implements to pour into a mould by sprue cup, casting complete after a certain period of time, is beaten
Broken upper shell core, lower shell core and sand core, casting molding.
Further；In step sl, the upper shell core and the lower shell core are made by horizontal core making machine is molded, described
Sand core is made by vertical core making machine and is molded.
Further；In step s3, after the upper shell core and the lower shell core mutually fasten, the also company of being bolted
It connects.
Relative to the prior art, Double flow path turbo-charger shell cast mold provided by the invention and casting method have
Beneficial effect is as follows：
Double flow path turbo-charger shell cast mold provided by the invention, including upper shell core and lower shell core, wherein, upper casing
After core and lower shell core cooperate, inside forms the shell forming surface for mould casting shell, in addition, in upper shell core and lower casing
The same side of core is equipped with the opening connected with inner shell forming surface, after upper shell core and lower shell core mutually fasten, two openings
Also the cast gate of sprue cup can be placed by complementing each other to form；Shell forming surface further includes the whirlpool head forming surface for the whirlpool head that can embark on journey,
Whirlpool head forming surface is equipped with the side of cast gate far from upper shell core and lower shell core, at this point, when cast gate is set upward, at the head forming surface of whirlpool
In the region on the lower side of shell forming surface.
Specifically, when by cast gate internally pouring in vertically clamped moulds potting syrup, potting syrup can preferentially cover whirlpool head forming surface, this
When, head forming surface molding whirlpool head and the port plate contacted with whirlpool head will not be because of potting syrups in whirlpool shrinkage or air entrapment are not
The problems such as discharging in time and shrinkage cavity occurs, ensure that whirlpool head and the stabilization of port plate size and structure, and due to cast gate court
Upper setting, what the shrinkage that potting syrup cooling generates influenced is the volume change of potting syrup at pouring head, does not influence the molding of casting,
And internal gas can also discharge at cast gate, further ensure the yield rate of Double flow path turbo-charger housing, produce
Efficiency improves, and meets the needs of people.
Double flow path turbo-charger shell cast method provided by the invention, shell core, lower shell core and sand core on installing
Afterwards, three's entirety is switched to place vertically by horizontal positioned, makes cast gate upward, sprue cup is then placed at cast gate, by pouring
Cup pours into a mould potting syrup towards inside, and the whirlpool head and port plate in the casting formed after casting complete are not in shrinkage cavity etc. substantially
Defect, the performance of Double flow path turbo-charger are guaranteed, meanwhile, also ensure Double flow path turbo-charger housing into
Product rate, production efficiency improve.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is structure when Double flow path turbo-charger shell cast mold provided in an embodiment of the present invention is equipped with sprue cup
Schematic diagram；
Fig. 2 is the overlooking the structure diagram of Double flow path turbo-charger shell cast mold provided in an embodiment of the present invention；
Fig. 3 is the structural representation of upper shell core in Double flow path turbo-charger shell cast mold provided in an embodiment of the present invention
Figure；
Fig. 4 is the structural representation of lower shell core in Double flow path turbo-charger shell cast mold provided in an embodiment of the present invention
Figure.
Icon：Shell core under 1-；The upper shell cores of 2-；3- cast gates；4- gas vents；5- sprue cups；6- shell forming surfaces；
61- whirlpools head forming surface.
Specific embodiment
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment one
As Figure 1-Figure 4, the embodiment of the present invention provides a kind of Double flow path turbo-charger shell cast mold, including
Upper shell core 2 and lower shell core 1；Upper shell core 2 and lower shell core 1 are located at the junction of the same side equipped with the cast gate for placing sprue cup 5
3, upper shell core 2 and lower shell core 1 in inside form shell forming surface 6 after fastening, and shell forming surface 6 is in communication with the outside by cast gate 3,
Shell forming surface 6 includes the whirlpool head forming surface 61 for being molded whirlpool head, and whirlpool head forming surface 61 is set far from upper shell core 2 and lower shell core 1
There is the side of cast gate 3；When cast gate 3 is set upward, potting syrup being capable of covering shell forming surface 6.
Double flow path turbo-charger shell cast mold provided in an embodiment of the present invention, including upper shell core 2 and lower shell core 1,
Wherein, after upper shell core 2 and lower shell core 1 cooperate, inside forms the shell forming surface 6 for mould casting shell, in addition,
The same side of upper shell core 2 and lower shell core 1 is equipped with the opening connected with inner shell forming surface 6, upper shell core 2 and lower 1 phase of shell core
After mutually fastening, two openings also complement each other to form the cast gate 3 that can place sprue cup 5；Shell forming surface 6 further includes can be into
The whirlpool head forming surface 61 of row whirlpool head, whirlpool head forming surface 61 is equipped with the side of cast gate 3 far from upper shell core 2 and lower shell core 1, at this point, working as
When cast gate 3 is set upward, whirlpool head forming surface 61 is in the region on the lower side of shell forming surface 6.
Specifically, when by the internally pouring in vertically clamped moulds potting syrup of cast gate 3, potting syrup can preferentially cover whirlpool head forming surface
61, at this point, whirlpool head forming surface 61 molding whirlpool head and the port plate contacted with whirlpool head will not because potting syrup shrinkage or in
The problems such as portion's bubble cannot discharge and shrinkage cavity occurs in time, ensure that the stabilization of whirlpool head and port plate size and structure, and by
It is set upward in cast gate 3, what the shrinkage that potting syrup cooling generates influenced is the volume change of potting syrup at pouring head, does not influence to cast
The molding of part, and internal gas can also discharge at cast gate 3, further ensure Double flow path turbo-charger housing into
Product rate, production efficiency improve, and meet the needs of people.
It is situated between in detailed below specifically, the present embodiment does the concrete structure of Double flow path turbo-charger shell cast mold
It continues.
First, as shown in figure 3, in the present embodiment, whirlpool head forming surface 61 is arranged on shell core 2, and carried on the back close to upper shell core 2
Side setting from cast gate 3.
The whirlpool head of Double flow path turbo-charger shell is twist distributed, and the forming surface of entire whirlpool head is practical to be set up separately in upper casing
On core 2 and lower shell core 1, and the whirlpool head forming surface 61 in the present embodiment refers to being easiest to occur with what port plate was in direct contact
Shrinkage cavity whirlpool head position, by set its close to upper shell core 2 away from cast gate 3 side set, can when carrying out pouring in vertically clamped moulds,
Potting syrup is first filled with the position, and according to the solidification principle of sequence from low to uper part, the quality of whirlpool head position and port plate obtains
To higher guarantee.
Further, as shown in Fig. 2, the present embodiment is also equipped with the connection of the side of cast gate 3 in upper shell core 2 and lower shell core 1
Place is equipped with multiple gas vents 4.
That is, in shell core in making 2 and lower shell core 1, the junction of the side of cast gate 3 is equipped in upper shell core 2 or lower shell core 1
Equipped with multiple gap connected with inner shell forming surface 6, when upper shell core 2 and lower shell core 1 mutually fasten, gap formed with it is interior
The gas vent 4 of portion's connection by setting gas vent 4, can discharge internal air in casting process, ensure cast liquid energy
Shell forming surface 6 is enough completely covered, avoids causing upper end forming surface shrinkage cavity contracting occur when lacking potting syrup due to bubble is excessive
The defects of loose, ensure that the yield rate of casting.
Specifically, in the present embodiment, shell forming surface 6 is equipped with zirconium English powder coating.
By being equipped with zirconium English powder coating, it can make shell forming surface 6 that there is excellent thixotropy and levelability, have excellent
Anti-stick grittiness, make the cast(ing) surface cast out bright and clean.
The present embodiment further includes the sand core for being molded channel turbine and port plate, and sand core is installed in 2 He of shell core
Between lower shell core 1.
Specifically, sand core is made of the first sand core being mutually detachably connected and the second sand core, the first sand core and second
Sand core is that completion is fabricated separately, and in the present embodiment, the two is bolted to connection, at this point, the first sand core and the second sand core it
Between formed for molding runners partition board gap, after the first sand core and the second sand core are first fixed as an entirety by the present embodiment,
It is fixed on the designated position on lower shell core 1 again, avoids and collides in the two installation process and sand core drop occur, into
And it ensure that the stabilization of the port plate size cast out and structure.
Further, the present embodiment is also equipped with zirconium English powder coating in sand core outer surface.
By being equipped with zirconium English powder coating, face outside sand core can be made particularly to be used at the gap of molding runners partition board have
Excellent thixotropy and levelability also with excellent anti-stick grittiness, make the baffle surface cast out bright and clean.
Finally, in the present embodiment, upper shell core 2, lower shell core 1 and sand core are made of precoated sand.
Precoated sand mainly uses high-quality selected natural siliceous sand as roughing sand, thermoplastic phenolic resin, methenamine and enhancing
Agent is raw material.It has the following advantages that：Shake-out, high intensity, it is low get angry, low bulk；Laxing property is good, surface finish of casting
It is high；Aliquation, thermal stability be not good, thermal conductivity is good, good fluidity for shell mould, and cast(ing) surface is smooth；High intensity, high temperature resistant, low bulk,
Release property is good, anti-stick grittiness is good；Shell does not shell uniformly, curing rate is fast.
Particularly, using precoated sand as raw material, core making machine rapid shaping, production efficiency higher can be passed through.
Embodiment two
The embodiment of the present invention provides a kind of Double flow path turbo-charger shell cast method, utilizes dual channel described above
Turbocharger housing casting mould is designed, and is in turn included the following steps：
S1：Upper shell core 2, lower shell core 1 and sand core are made using core making machine；
By using core making machine, a cycle period only needs more than ten seconds to tens seconds, can produce the shell for casting
Core or sand core, it is efficient；In addition, compared to artificial, shell core or sand core accurate size that core making machine makes, any surface finish, quality
It is high.
S2：6 brushing zircon flour coating of shell forming surface on upper shell core 2 and lower shell core 1, in sand core outer surface brushing zirconium
English powder applies, and then carries out prebake to three；
S3：Sand core is fixedly held to lower 1 designated position of shell core, upper shell core 2 is fastened with lower shell core 1；
At this point, first that lower shell core 1 is horizontal positioned, then complete the installation of sand core and upper shell core 2 and fix, with conventional mounting side
Formula is identical.
S4：Then cast gate 3 is put setting by shell core 2 and lower shell core 1 in drying upward vertically；
After installing and drying, three is integrally placed into the region for preparing cast, and cast gate 3 is controlled to set upward.
S5：At cast gate 3 place sprue cup 5, by sprue cup 5 internally implements pour into a mould, casting complete after a certain period of time,
Smash shell core 2, lower shell core 1 and sand core, casting molding.
Upper shell core 2, lower shell core 1 and the sand core release property made by precoated sand is good, after smashing, not with casting adhesion, casts
Part surface is smooth, dimensionally stable.
Specifically, Double flow path turbo-charger shell cast method provided in an embodiment of the present invention, the shell core on installing
2nd, after lower shell core 1 and sand core, switch to place vertically by horizontal positioned by three is whole, make cast gate 3 upward, then at cast gate 3
Place sprue cup 5, potting syrup poured into a mould towards inside by sprue cup 5, the whirlpool head and runner in the casting formed after casting complete every
The defects of plate is not in shrinkage cavity substantially, the performance of Double flow path turbo-charger are guaranteed, meanwhile, also ensure double fluid
The yield rate of road turbocharger housing, production efficiency improve.
In addition, in step sl, upper shell core 2 and lower shell core 1 are made by horizontal core making machine and are molded, and sand core is by vertically making
Core mechanism is molded.
Compared to horizontal core making machine, vertical core making machine can make the more complicated sand core or shell core of shape, due to this implementation
Sand core shape in example is complex and excessively high to the size precision prescribed of port plate, is made by using vertical core making machine
Sand core ensure that the accuracy requirement of the shape and size in sand core for the gap of molding runners partition board from source.
Finally, in step s3, it after upper shell core 2 and lower shell core 1 mutually fasten, is also bolted to connection.
Due to also needing to rotate the upper shell core 2 after fastening and lower shell core 1 to cast gate 3 upward in subsequent step, at this point,
The junction of the two is substantially not subject to the constraint of external force, is bolted to connection, and can ensure the stabilization of the two junction, into
And ensure subsequently to pour being normally carried out for step.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of Double flow path turbo-charger shell cast mold, which is characterized in that including upper shell core and lower shell core；
The upper shell core and the lower shell core are located at the junction of the same side equipped with the cast gate for placing sprue cup, the upper casing
Shell forming surface is formed in inside after core and the lower shell core fastening, the shell forming surface is connected by the cast gate with extraneous
Logical, the shell forming surface includes the whirlpool head forming surface for being molded whirlpool head, the whirlpool head forming surface far from the upper shell core and
The side that the lower shell core is equipped with the cast gate is set；
When the cast gate is set upward, potting syrup can cover the shell forming surface.
2. Double flow path turbo-charger shell cast mold according to claim 1, which is characterized in that the whirlpool head molding
Face is arranged on the upper shell core, and is set close to the upper shell core away from the side of the cast gate.
3. Double flow path turbo-charger shell cast mold according to claim 2, which is characterized in that the upper shell core and
The junction that the lower shell core is equipped with the side of the cast gate is equipped with multiple gas vents.
4. Double flow path turbo-charger shell cast mold according to claim 3, which is characterized in that the outer casing forming
Face is equipped with zirconium English powder coating.
5. according to claim 1-4 any one of them Double flow path turbo-charger shell cast molds, which is characterized in that also
Including being used to being molded channel turbine and the sand core of port plate, the sand core be installed in the upper shell core and the lower shell core it
Between.
6. Double flow path turbo-charger shell cast mold according to claim 5, which is characterized in that the sand core appearance
Face is equipped with zirconium English powder coating.
7. Double flow path turbo-charger shell cast mold according to claim 6, which is characterized in that the upper shell core,
The lower shell core and the sand core are made of precoated sand.
A kind of 8. Double flow path turbo-charger shell cast method, which is characterized in that using described in claim any one of 1-7
Double flow path turbo-charger shell cast mold be designed, in turn include the following steps：
S1：Upper shell core, lower shell core and sand core are made using core making machine；
S2：Shell forming surface brushing zircon flour coating on upper shell core and lower shell core is applied in sand core outer surface brushing zirconium English powder,
Prebake then is carried out to three；
S3：Sand core is fixedly held to lower shell core designated position, upper shell core is fastened with lower shell core；
S4：Cast gate, is then put setting by shell core and lower shell core upward vertically in drying；
S5：Sprue cup is placed at cast gate, internally implements to pour into a mould by sprue cup, casting complete after a certain period of time, is smashed
Shell core, lower shell core and sand core, take out molding casting.
9. Double flow path turbo-charger shell cast method according to claim 8, which is characterized in that in step sl,
The upper shell core and the lower shell core are made by horizontal core making machine to be molded, and the sand core is made by vertical core making machine and is molded.
10. Double flow path turbo-charger shell cast method according to claim 9, which is characterized in that in step s3,
After the upper shell core and the lower shell core mutually fasten, also it is bolted to connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810039864.2A CN108246973A (en) | 2018-01-15 | 2018-01-15 | Double flow path turbo-charger shell cast mold and casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810039864.2A CN108246973A (en) | 2018-01-15 | 2018-01-15 | Double flow path turbo-charger shell cast mold and casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108246973A true CN108246973A (en) | 2018-07-06 |
Family
ID=62726536
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810039864.2A Pending CN108246973A (en) | 2018-01-15 | 2018-01-15 | Double flow path turbo-charger shell cast mold and casting method |
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| CN106424582A (en) * | 2016-10-28 | 2017-02-22 | 江苏华培动力科技有限公司 | Molding process for sand cores used for casting turbocharger shells |
| CN206169173U (en) * | 2016-10-31 | 2017-05-17 | 江苏华培动力科技有限公司 | Turbo charger casing sand mo(u)ld device |
| CN206425491U (en) * | 2016-12-30 | 2017-08-22 | 贵阳华烽有色铸造有限公司 | A kind of gravity casting mold of seal nipple |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716651A (en) * | 2009-08-06 | 2010-06-02 | 上海华新合金有限公司 | Method for casting turbo supercharger volute shell casting for large ship |
| KR20110063107A (en) * | 2009-12-04 | 2011-06-10 | 현대자동차주식회사 | A mold for gravity pressure casting |
| CN202715771U (en) * | 2012-08-30 | 2013-02-06 | 桐乡合德机械有限公司 | Resin sand standard test bar mould |
| CN104338907A (en) * | 2013-07-25 | 2015-02-11 | 株式会社世渊Scs | Gravity casting mold |
| CN204052806U (en) * | 2014-08-22 | 2014-12-31 | 贵州安吉航空精密铸造有限责任公司 | A kind of metal die |
| CN204603210U (en) * | 2015-03-24 | 2015-09-02 | 无锡三众模具有限公司 | A kind of turbocharger shell casting die |
| CN106424582A (en) * | 2016-10-28 | 2017-02-22 | 江苏华培动力科技有限公司 | Molding process for sand cores used for casting turbocharger shells |
| CN206169173U (en) * | 2016-10-31 | 2017-05-17 | 江苏华培动力科技有限公司 | Turbo charger casing sand mo(u)ld device |
| CN206425491U (en) * | 2016-12-30 | 2017-08-22 | 贵阳华烽有色铸造有限公司 | A kind of gravity casting mold of seal nipple |
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