CN207563695U - Shell, sand casting mold and its component rotary type drying device - Google Patents
Shell, sand casting mold and its component rotary type drying device Download PDFInfo
- Publication number
- CN207563695U CN207563695U CN201721501644.4U CN201721501644U CN207563695U CN 207563695 U CN207563695 U CN 207563695U CN 201721501644 U CN201721501644 U CN 201721501644U CN 207563695 U CN207563695 U CN 207563695U
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- support base
- hanger
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- casting mold
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- 238000001035 drying Methods 0.000 title claims abstract description 55
- 238000007528 sand casting Methods 0.000 title claims abstract description 29
- 238000005266 casting Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000009415 formwork Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010114 lost-foam casting Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a kind of shell, sand casting mold and its component rotary type drying devices, circular base slab and annular groove support base are further included including connecting rod, the main support base of hollow structure between gear motor, main support base, semicircle revolving bed, half circular journal bearing, rotating device, rectangular hanger and frame.Shell, sand casting mold and its component etc. are oven-dried object and can hang or be placed in rectangular hanger, hanger support base in gear motor driving rotating device, which is realized rectangular hanger and is placed in it, is oven-dried object revolution, at the same rectangular hanger between drive link and frame under the action of connecting rod around the axis rotation of outstanding fulcrum.The utility model can be accelerated to be oven-dried the drying of object, realize uniformly drying, it avoids deforming or crack, improve casting yield, it is also beneficial to form circulation simultaneously so that drying is more quick, reduces labor intensity and production cost, shorten the Production Time of shell, sand casting mold and its component, there is simple in structure, reasonable design, easily fabricated.
Description
Technical field
The utility model belongs to mould drying equipment technical field, and more particularly to a kind of shell, sand casting mold and its component are used
Rotary type drying device.
Background technology
It is required for drying shell or casting mold and its component in shell moulded casting, model casting and sand casting process
Processing, to reduce casting flaw.At present, shell processed drying is typically that the shell for spreading sand is placed on shelf in model casting
On, it is dried in processing by fan, air-conditioning and the dehumidifier in workshop, after the drying time for reaching technological requirement i.e.
It can carry out next layer of operation.The major defect of the prior art is exactly shell processed very time consumption and energy consumption, especially with groove, slit
With the product of central hole structure, every layer of drying time of this kind of product is 1-2 days longer than general set annular product, greatly affected
Scheduling of production and Lead Time, seriously reduce production efficiency.In lost foam casting, bubbles model needs are coated with one layer on surface
For casting after coating drying, the prior art is dried using natural cooling, less efficient.
In sand casting, in order to improve mold cavity surface quality and improve mobility, need in casting mold mold cavity surface and sand
Wicking surface is brushed or dip-coating paint.In casting such as automobile engine cylinder-body, need to dry after sand core dip-coating, existing sand core drying
Mode frequently with sand core is suspended on stoving rack and is dried naturally vertically, but as existing sand core structure is to complication
Development can make the sand core crank of labyrinth using nature hang and suspension is caused to tilt, use current drying
Frame operation is difficult to be molded and core-breaking rate is higher, it is impossible to mass production.And prior art leads to drying time length, sand core
It is yielding, cost is not only increased, and affect the quality of cast article.
Therefore, it undergoes technological transformation to current existing casting technique, it has also become the mesh that contemporary casting industry is pursued jointly
Mark.Especially sand core drying technique, using energy consumption is small, drying rate is fast, takes up little area, the new process without deformation, non-environmental-pollution
Technology is one of necessary links of casting technique transformation.So how to design one kind can quickly, uniform dryer to casting
The components such as sand mold, shell or sand core are dried, and traditional simple suspension or stacking type drying is replaced to become this field and be badly in need of solution
Certainly the problem of.
The problem of for drying such as shell, sand casting mold and its components, existing patent document also proposed some solutions
Certainly scheme.Chinese patent application No. is 201120399576.1 discloses a kind of sand core drying rack, including crossbeam, is supported in crossbeam
Support column, supporting rack and the limiting briquetting at both ends, which, can by setting the supporting rack extended to crossbeam both sides
It is dried so that sand core is suspended on supporting rack, but sand core cannot be overturn in drying course, uneven heating is even.Application No. is
The Chinese patent of 201320290228.X discloses a kind of shell mold drying frame, by four vertical supporting bars and rectangular lateral bracket group
Into although drying frame can move integrally, shell mold is irremovable in drying frame.In 201320432828.5
State's patent discloses a kind of self-rotary formwork drying device, passes through including driving motor, worm screw, gear and formwork bearing bar, formwork
Hook is suspended on formwork bearing bar and is of a straight line type arrangement, and motor drives worm screw rotation, and worm screw passes through gear band dynamic model shell again
Bearing bar rotation, the rotation of formwork can improve drying effect, but be not suitable for using in drying oven.Application No. is
201621133588.9 Chinese patent discloses a kind of shell drying equipment of rotation quick-drying, including stent and sets in the bracket
The rotary shaft in portion, the top of stent are equipped with the motor and conveyer belt that drive rotary shaft rotation, are equipped with to fix on the rotary shaft
The rotatable turntable and strut of shell can improve drying efficiency and effect to a certain extent, but by dry shell only
It can revolve round the sun and be unable to rotation.Chinese patent application No. is 201610172995.9 discloses a kind of self-rotation ceramic product processing
Baking oven, including babinet, pusher cylinder, placement plate, electric rotating machine, upper grip block, lower grip block, it can produce the ceramics being put into
Product are clamped between upper grip block and lower grip block, and are rotated automatically, realize uniformly drying, the ceramic product being oven-dried is in stove
Also it can only revolve round the sun and be unable to rotation, affect drying effect.
Invention content
The purpose of this utility model is that in view of the deficiencies of the prior art, providing a kind of shell, sand casting mold and its component use can
Rotary drying device can realize shell, sand casting mold and its component more rapidly evenly drying, improve casting yield and drying
Efficiency, and placement, cleaning are conveniently, the defects of saving working hour and reduction production cost, the prior art can be overcome.
Technical problem to be solved in the utility model is realized using following technical scheme.
A kind of shell, sand casting mold and its component rotary type drying device, including gear motor, main support base, semicircle
Connecting rod between shape revolving bed, half circular journal bearing, rotating device, rectangular hanger and frame.Wherein, the gear motor is fixedly mounted on master
The top center of support base, for providing power for the rotation of rotating device and rectangular hanger.The rotating dress set
Between main support base and rectangular hanger, and the top of rotating device is mounted on the output shaft of gear motor, for hanging branch
The rotation of rectangular hanger and transmission gear motor output shaft is supportted, realizes revolution of the rectangular hanger around gear motor output shaft axis；
Meanwhile rotating device also cooperates with the rectangular hanger realization rotation of connecting rod driving between frame.The semicircle revolving bed is inlaid in main branch
It supports on seat, and is connected between the upper end of the semicircle revolving bed and main support base by two and half circular journal bearings.Described
Semicircle revolving bed includes semicircle support plate, arc bracket.Wherein, it is kept off in the inner end of the semicircle support plate equipped with arc
Block, the semicircle support plate are inlaid in main support base, and top and the semicircle support plate of the arc bracket are connected, in institute
The lower end for the arc bracket stated is equipped with revolution terminal pad, for suspension strut rotating device；Under the semicircle revolving bed
End is connected with rotating device by hinge.The rectangular hanger is fixedly mounted on the lower section of rotating device；Between the frame
Connecting rod is located at the lower section of rectangular hanger, is connected between the rectangular hanger adjacent with two of the both ends of connecting rod by hinge between frame.
The rectangular hanger includes frame body and support mesh plate, and the support mesh plate is fixedly mounted on the bottom of frame body,
And it is connected with frame body；Hanging ring is equipped at the top of the frame body, is dried for hanging shell, sand casting mold and its component etc.
Dry is additionally provided with connecting rod base, for connecting rod between mounting bracket in the bottom of the frame body.
The gear motor is using decelerating motor or hydraulic motor or air motor.It is returned in the semicircle revolving bed
The quantity for turning terminal pad is 3-6.
The main support base is in hollow structure, including circular base slab and annular groove support base.Wherein, circular base slab is used
In installing and fixing gear motor, annular groove support base is for half circular journal bearing of installation.The annular groove support base is located at circular support
It the underface of plate and is connected with circular base slab, two and half circular journal bearings are mounted in the annular groove of annular groove support base.Described half
Circle support plate is between half circular journal bearing and circular base slab.
The rotating device includes hanger support base, outstanding fulcrum and drive link.Wherein, hanger support seat
In the underface of annular groove support base, for installing and supporting outstanding fulcrum, hanger support base is fixedly mounted on the output of gear motor
On axis, and it is connected with the output shaft of gear motor by flat key, for transmitting the output of gear motor rotation；The outstanding branch
The upper end of axis is mounted on hanger support base, and is connected between hanger support base by bearing, under the outstanding fulcrum
The top center with rectangular hanger is held to be connected, for fixing and supporting rectangular hanger；One end of the drive link and outstanding branch
The lower end of axis is connected, and the other end of drive link is connected with the revolution terminal pad of semicircle revolving bed lower end by hinge.
The quantity of the rectangular hanger is 4-20, and the rectangular hanger of each two forms a rotation rotation group, each
It is independently connected between two rectangular hangers in rotation rotation group by connecting rod between a frame；At the top of the rectangular hanger
Equipped with hanging ring, connecting rod base is additionally provided in the bottom of rectangular hanger, and between the axis of the axis of the connecting rod base and outstanding fulcrum
Eccentricity be rectangular hanger length 1/10-1/3.
The utility model can be placed in drying oven using or by the furnace roof of main support base insertion drying oven.It uses
When, elder generation determines that shell, sand casting mold and its component etc. are oven-dried object and be suspended on by use according to the drying process demand for being oven-dried object
In rectangular hanger or shell, sand casting mold and its component etc. are oven-dried object to be placed in rectangular hanger.Gear motor driving rotation
Hanger support base in device, which is realized rectangular hanger and is placed in it, is oven-dried object revolution, while rectangular hanger and is oven-dried
Object is between drive link and frame around the axis rotation of outstanding fulcrum under the action of connecting rod.And then it realizes to shell, sand casting mold and its group
Part etc. is oven-dried the uniform drying of object.
The beneficial effects of the utility model are：Compared with prior art, shell, sand casting mold and its component etc. are oven-dried object
Both it can be suspended in rectangular hanger, can also be directly placed in rectangular hanger, and rectangular hanger and be placed on being dried in it
Dry is while the axis revolution around hanger support base, moreover it is possible to around the axis rotation of outstanding fulcrum.The utility model can accelerate type
Shell, sand casting mold and its component etc. are oven-dried the drying of object, realize uniformly drying, avoid being oven-dried object and deform or crack, and carry
The yield rate of high casting, while be also beneficial to form circulation in drying oven so that drying is more quick, reduces worker's
Labor intensity and enterprise's production cost shorten the Production Time of shell, sand casting mold and its component, also with simple in structure, design
Rationally, easily fabricated and cleaning the advantages of facilitating, the defects of prior art can be overcome.
Description of the drawings
Fig. 1 is the general structure schematic diagram of the utility model；
Fig. 2 is the assembly relation schematic diagram of the utility model；
General structure schematic diagram when Fig. 3 is the utility model inversion state；
Fig. 4 is the structure diagram of the main support base of the utility model；
Fig. 5 is the full sectional view of the main support base of the utility model；
Fig. 6 is the structure diagram of the semicircle revolving bed of the utility model.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness for being realized the utility model are easy to understand,
With reference to specific embodiment and diagram, the utility model is expanded on further.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of shell, sand casting mold and its component are dried with rotary type
Device, including gear motor 1, main support base 2, semicircle revolving bed 3, half circular journal bearing 4, rotating device 5, rectangular hanger 6 and frame
Between connecting rod 7.Wherein, the gear motor 1 is fixedly mounted on the top center of main support base 2, for for rotating device 5
Rotation with rectangular hanger 6 provides power.The rotating device 5 rotates between main support base 2 and rectangular hanger 6
The top of device 5 is mounted on the output shaft of gear motor 1, is exported for the rectangular hanger 6 of suspension strut and transmission gear motor 1
Revolution of the rectangular hanger 6 around 1 output shaft axis of gear motor is realized in the rotation of axis；Meanwhile rotating device 5 also cooperate with frame between connect
Bar 7 drives rectangular hanger 6 to realize rotation.The semicircle revolving bed 3 is inlaid on main support base 2, and the semicircle
It is connected between the upper end of revolving bed 3 and main support base 2 by two and half circular journal bearings 4.The semicircle revolving bed 3 includes half
Circle support plate 31, arc bracket 32.Wherein, block arc 311 is equipped in the inner end of the semicircle support plate 31, it is described
Semicircle support plate 31 is inlaid in main support base 2, and top and the semicircle support plate 31 of the arc bracket 32 are connected, described
Arc bracket 32 lower end be equipped with revolution terminal pad 33, for suspension strut rotating device 5；The semicircle revolving bed 3
Lower end be connected with rotating device 5 by hinge.The rectangular hanger 6 is fixedly mounted on the lower section of rotating device 5；It is described
Frame between connecting rod 7 be located at the lower section of rectangular hanger 6, pass through hinge between the both ends of connecting rod 7 and two adjacent rectangular hangers 6 between frame
Chain is connected.The rectangular hanger 6 includes frame body 61 and support mesh plate 62, and the support mesh plate 62 is fixedly mounted
It is connected in the bottom of frame body 61, and with frame body 61；Hanging ring 63 is equipped at the top of the frame body 61, for mounted model
Shell, sand casting mold and its component etc. are oven-dried object, connecting rod base 64 are additionally provided in the bottom of the frame body 61, between mounting bracket
Connecting rod 7.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the main support base 2 is in hollow structure, including circular base slab 21
With annular groove support base 22.Wherein, for installing and fixing gear motor 1, annular groove support base 22 is used to install circular base slab 21
Half circular journal bearing 4.The annular groove support base 22 is located at the underface of circular base slab 21 and is connected with circular base slab 21, two
Half circular journal bearing 4 is mounted in the annular groove 221 of annular groove support base 22.The semicircle support plate 31 is located at half circular journal bearing 4 and circle
Between shape support plate 21.
As shown in Figure 1, Figure 2 and Figure 3, the rotating device 5 includes hanger support base 51, outstanding fulcrum 52 and drive link
53.Wherein, the hanger support base 51 is located at the underface of annular groove support base 22, for installing and supporting outstanding fulcrum 52, hangs
Frame support base 51 is fixedly mounted on the output shaft of gear motor 1, and is connected with the output shaft of gear motor 1 by flat key,
For transmitting the output of gear motor 1 rotation；The upper end of the outstanding fulcrum 52 is mounted on hanger support base 51, and and hanger
It is connected between support base 51 by bearing, the lower end of the outstanding fulcrum 52 and the top center of rectangular hanger 6 are connected, and are used for
Fix and support rectangular hanger 6；One end of the drive link 53 and the lower end of outstanding fulcrum 52 are connected, drive link 53 it is another
One end is connected with the revolution terminal pad 33 of semicircle 3 lower end of revolving bed by hinge.
As depicted in figs. 1 and 2, the gear motor 1 is using decelerating motor or hydraulic motor or air motor.
As shown in Figure 1, Figure 2 and Figure 3, the quantity of the rectangular hanger 6 is 4-20, and rectangular 6 structure of hanger of each two
Into a rotation rotation group, independently connected by connecting rod 7 between a frame between two rectangular hangers 6 in each rotation rotation group
It connects；And the 1/10-1/ that the eccentricity between the axis of the connecting rod base 64 and the axis of outstanding fulcrum 52 is 61 length of frame body
3。
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 6, the quantity that terminal pad 33 is turned round in the semicircle revolving bed 3 is 3-6.
The utility model can be placed in drying oven using or main support base 2 is embedded in the furnace roof of drying oven.It uses
When, elder generation determines that shell, sand casting mold and its component etc. are oven-dried object and be suspended on by use according to the drying process demand for being oven-dried object
The supporting network that object is placed in rectangular hanger is oven-dried on hanging ring 63 in rectangular hanger or by shell, sand casting mold and its component etc.
On orifice plate 62.Gear motor 1 drives the hanger support base 51 in rotating device 5 to realize rectangular hanger 6 and the quilt being placed in it
Drying object revolve round the sun, while rectangular hanger 6 and be oven-dried object between drive link 53 and frame under the action of connecting rod 7 around outstanding fulcrum 52
Axis rotation, and then realize the uniform drying that object is oven-dried to shell, sand casting mold and its component etc..
The instructions such as " on ", " under ", " top ", " bottom ", " interior " it is to be appreciated that term in the description of the present invention,
Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description the utility model and letter
Change description rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that limitation to the utility model.
The basic principle, main feature and advantage of the utility model has been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of shell, sand casting mold and its component rotary type drying device, including gear motor, main support base, semicircle
Connecting rod between revolving bed, half circular journal bearing, rotating device, rectangular hanger and frame, it is characterised in that：The gear motor is fixedly mounted
In the top center of main support base；The rotating device is between main support base and rectangular hanger, the rotation
The top of device is mounted on the output shaft of gear motor；The semicircle revolving bed is inlaid on main support base, and described
Semicircle revolving bed upper end and main support base between be connected by two and half circular journal bearings, the semicircle revolving bed
Lower end is connected with rotating device by hinge；The rectangular hanger is fixedly mounted on the lower section of rotating device；The frame
Between connecting rod be located at the lower section of rectangular hanger, be connected between the rectangular hanger adjacent with two of the both ends of connecting rod by hinge between frame
It connects；
The main support base is in hollow structure, and including circular base slab and annular groove support base, the annular groove support base is located at
It the underface of circular base slab and is connected with circular base slab, two and half circular journal bearings are mounted in the annular groove of annular groove support base；
The semicircle revolving bed includes semicircle support plate, arc bracket, is equipped in the inner end of the semicircle support plate
Block arc, the semicircle support plate is inlaid in main support base, and between half circular journal bearing and circular base slab, described
The top of arc bracket be connected with semicircle support plate, revolution terminal pad is equipped in the lower end of the arc bracket；
The rotating device includes hanger support base, outstanding fulcrum and drive link, the hanger support base and is located at annular groove branch
The underface of seat is supportted, hanger support base is fixedly mounted on the output shaft of gear motor, and is passed through with the output shaft of gear motor
Flat key is connected；The upper end of the outstanding fulcrum is mounted on hanger support base, and passes through bearing phase between hanger support base
Connection, the lower end of the outstanding fulcrum and the top center of rectangular hanger are connected；One end of the drive link and outstanding fulcrum
Lower end be connected, the other end of drive link is connected with the revolution terminal pad of semicircle revolving bed lower end by hinge；
The rectangular hanger includes frame body and support mesh plate, and the support mesh plate is fixedly mounted on the bottom of frame body
Portion, and be connected with frame body；Hanging ring is equipped at the top of the frame body, is additionally provided with and is used in the bottom of the frame body
The connecting rod base of connecting rod between mounting bracket.
2. a kind of shell according to claim 1, sand casting mold and its component rotary type drying device, feature exist
In：The gear motor is using decelerating motor or hydraulic motor or air motor.
3. a kind of shell according to claim 1, sand casting mold and its component rotary type drying device, feature exist
In：The quantity of the rectangular hanger is 4-20, and the rectangular hanger of each two forms a rotation rotation group, each to rotate certainly
Turn to be independently connected by connecting rod between a frame between two rectangular hangers in group.
4. a kind of shell according to claim 1, sand casting mold and its component rotary type drying device, feature exist
In：The quantity that terminal pad is turned round in the semicircle revolving bed is 3-6.
5. a kind of shell according to claim 1, sand casting mold and its component rotary type drying device, feature exist
In：Eccentricity between the axis of the axis of the connecting rod base and outstanding fulcrum is the 1/10-1/3 of rectangular hanger length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721501644.4U CN207563695U (en) | 2017-11-10 | 2017-11-10 | Shell, sand casting mold and its component rotary type drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721501644.4U CN207563695U (en) | 2017-11-10 | 2017-11-10 | Shell, sand casting mold and its component rotary type drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207563695U true CN207563695U (en) | 2018-07-03 |
Family
ID=62694220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721501644.4U Withdrawn - After Issue CN207563695U (en) | 2017-11-10 | 2017-11-10 | Shell, sand casting mold and its component rotary type drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207563695U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107695301A (en) * | 2017-11-10 | 2018-02-16 | 安徽理工大学 | Shell, sand casting mold and its component rotary type drying device |
| CN111468686A (en) * | 2020-06-02 | 2020-07-31 | 璁镐附 | Lost foam casting forming process for pump body |
-
2017
- 2017-11-10 CN CN201721501644.4U patent/CN207563695U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107695301A (en) * | 2017-11-10 | 2018-02-16 | 安徽理工大学 | Shell, sand casting mold and its component rotary type drying device |
| CN107695301B (en) * | 2017-11-10 | 2024-03-15 | 安徽理工大学 | Shell, sand casting mould and rotatable drying device for components of sand casting mould |
| CN111468686A (en) * | 2020-06-02 | 2020-07-31 | 璁镐附 | Lost foam casting forming process for pump body |
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