CN115921782A - V-method molding method of double-sided mold - Google Patents
V-method molding method of double-sided mold Download PDFInfo
- Publication number
- CN115921782A CN115921782A CN202211570556.5A CN202211570556A CN115921782A CN 115921782 A CN115921782 A CN 115921782A CN 202211570556 A CN202211570556 A CN 202211570556A CN 115921782 A CN115921782 A CN 115921782A
- Authority
- CN
- China
- Prior art keywords
- mold
- molding
- sand
- sand box
- plastic film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Casting Devices For Molds (AREA)
Abstract
The invention provides a V-method molding method of a double-sided mold, which can solve the problems that the traditional V-method molding has high mounting and positioning precision of an upper mold and a lower mold, is difficult to be randomly compatible with various molds, and is easy to cause box staggering when molding boxes are combined. The method comprises the following steps: manufacturing a mold base plate, manufacturing an integral mold, molding a lower sand box, molding an upper sand box, taking out the mold, assembling the mold and casting; after the lower sand box is molded, the lower sand box is lifted and turned, then is placed on the plain bumper again, the plastic film is drilled through the surface of the coated mold again to form a vacuum channel, and the lower sand box is used as a mold bottom plate to perform the molding step of the upper sand box. According to the invention, only one mold bottom plate is needed, the mold bottom plate is used as the mold bottom plate after the lower sand box is molded, the vacuum channel is formed by drilling the surface of the mold coated with the film again, the upper sand box is molded, and meanwhile, the integral mold effectively avoids the problem that the mold is manufactured and installed separately, so that the mold is easily mistaken when being closed, and the product percent of pass is improved.
Description
Technical Field
The invention belongs to the field of casting technology, and particularly relates to a V-method molding method of a double-sided mold.
Background
The V-method molding is a vacuum seal molding casting method, also called negative pressure molding. The method adopts single dry sand (i.e. no water, adhesive or additive) as moulding sand, and uses plastic film to make film-covering formation on the mould with air hole and air-extracting device after heating, and seals sand box, and utilizes vacuum pump to pump out air in the mould so as to make the pressure difference between interior and exterior of mould to make the dry sand compact and stable, so that the required mould cavity can be formed.
At present, the traditional V-method modeling must adopt two die base plates, respectively install an upper die and a lower die, then respectively model the upper die and the lower die and pour in a box, but the modeling method has the following defects: 1) The positioning precision of a split type mold (for example, two semicircular molds which are respectively molded and combined in an upper mold and a lower mold and finally cast into a spherical casting) is high, and the mold needs to be placed at a specific position in order to meet the positioning requirement;
(2) The split type die has higher processing difficulty; (3) The problem of wrong mold is easy to occur when the sand boxes are molded, so that qualified castings cannot be cast, and the qualified rate of finished products is influenced.
Therefore, it is highly desirable to develop a V-method molding method which is easy to operate, requires low positioning accuracy, and can reduce the possibility of mismatching of flasks when the flasks are assembled.
Disclosure of Invention
The invention provides a V-method molding method of a double-sided mold, aiming at the technical problems that the traditional V-method molding has high mounting and positioning precision of an upper mold and a lower mold, the operation is complex, the mold processing difficulty is high, one-time molding is difficult to be randomly compatible with various molds, and the box staggering is easy to occur when a sand box closes a box, the method only needs one mold bottom plate, the lower sand box is turned over to be used as the mold bottom plate after the lower sand box molding is completed, a plastic film is drilled and penetrated on the surface of the coated mold again to form a vacuum channel for upper sand box molding, and the used mold is an integral mold, so that the problem of box staggering easily caused when closing the box is effectively avoided due to the split manufacturing and mounting of the mold, the product qualification rate is improved, and the V-method molding method has the characteristics of flexible and simple operation and high product qualification rate.
In order to achieve the purpose, the invention adopts the technical scheme that:
a V-method molding method of a double-sided mold comprises the steps of manufacturing a mold base plate with an air exhaust chamber, manufacturing an integral mold, molding a drag flask, taking out the integral mold, molding a cope flask, assembling a mold and casting molding; after the molding of the drag flask is completed, the drag flask is lifted and turned, then is placed on the plain bumper again, a vacuum channel is formed by drilling a hole on the surface of the coated mold again to penetrate through a plastic film, and the drag flask is used as a mold bottom plate to perform a molding step of the cope flask.
In one embodiment, the integral mold is manufactured with fine through holes densely distributed around the integral mold, which serve as vacuum channels with a diameter of less than 3mm.
In one embodiment, the V-process molding method of the double-sided mold includes the steps of:
placing one or more integral molds on the mold bottom plate with the air exhaust chamber, and connecting pouring channels between the adjacent molds;
covering a plastic film baked to be in a mirror surface state on the mold base plate, vacuumizing to enable the plastic film to be tightly attached to the mold base plate for molding, and spraying a coating on the surface of the plastic film;
placing a drag flask with a filtering and air-extracting device on a mold bottom plate covered with a plastic film to enable a mold on the mold bottom plate to be positioned in the drag flask, and filling dry sand into the drag flask, compacting and scraping the sand after the surface coating of the plastic film is dried;
covering a back film on the surface of the drag flask, and pumping out air in the molding sand of the drag flask to generate pressure difference between the inside and the outside of the casting mold, and keeping the vacuum degree of-0.04 to-0.05 Mpa to obtain a stable drag sand mold;
relieving the vacuum state in the die bottom plate, and performing back flushing and stripping;
the lower sand box is placed on a compaction table after being lifted and turned over, and the plastic film is drilled through the drilling position of the fine through hole of the mould to form a vacuum channel;
covering a plastic film baked to be in a mirror surface state on the lower sand box, enabling the plastic film to be tightly attached to the lower sand box for molding, spraying a coating on the surface of the plastic film, and arranging a pouring system;
placing an upper sand box with a filtering and air-extracting device on the lower sand box, and filling dry sand into the upper sand box, compacting and scraping the dry sand after the surface coating of the plastic film is dried;
covering a back film on the surface of the cope flask, and pumping out air in the molding sand of the cope flask to generate pressure difference between the inside and the outside of the casting mold, and keeping the vacuum degree of-0.04 to-0.05 Mpa to form a stable cope mold;
lifting the upper sand box aside, separating the upper sand box from the lower sand box, and taking out the integral mold;
and (3) carrying out secondary mould assembling on the upper sand box and the lower sand box, hoisting and conveying the mould box after mould assembling to a pouring area for pouring, keeping the vacuum degree of-0.05 to-0.06 Mpa during pouring, keeping the vacuum degree of-0.04 to-0.045 Mpa after pouring is finished, stopping air suction on the casting mould after the metal is solidified to a certain degree, and automatically collapsing the sand mould when the pressure in the mould is close to atmospheric pressure to obtain a complete casting.
In one embodiment, the surface of the die base plate is uniformly provided with a plurality of vacuum channel holes.
In one embodiment, the vacuum condition in the mold bottom plate is released, and the drag flask is kept in the vacuum condition until the cast product is solidified.
In one embodiment, after the air is evacuated from the molding sand in the cope flask, the vacuum is maintained in the cope flask until the poured cast product solidifies.
In one embodiment, when the drag flask is placed on the plain bumper after being lifted and turned, the mold bottom plate is not disposed on the plain bumper.
In one embodiment, the dry sand is a dry sand that is free of binders and additives.
In one embodiment, the plastic film is an EVA film.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the invention provides a V-method molding method of a double-sided mold, which only needs one mold bottom plate, a lower mold box is turned to be used as the mold bottom plate after the molding of the lower mold box is finished, a vacuum channel is formed by drilling a plastic film on the surface of the mold after film coating again to mold an upper mold box, and the used mold is an integral mold, so that the problem of wrong mold making during mold closing caused by mold split manufacturing and installation is effectively avoided, and the product percent of pass is improved;
2. the invention provides a V-method molding method of a double-sided mold, which breaks through the limitation that two mold bottom plates are required to be adopted for installing an upper mold and a lower mold respectively in the traditional V-method molding, and then the upper mold and the lower mold are molded respectively and then are subjected to box-combining casting;
3. the V-method molding method of the double-sided mold provided by the invention adopts the integral mold, so that the processing difficulty of the mold is reduced, the position of the mold in the sand box can be randomly placed, the strict limitation on the placing position of the mold is not required like a split mold, and the V-method molding method has the characteristics of simplicity and convenience in operation, strong flexibility and high product percent of pass.
Drawings
FIG. 1 is a schematic view of a mold placed on a mold bed according to an embodiment of the present invention;
FIG. 2 is a schematic view showing a structure in which a drag flask according to an embodiment of the present invention is placed on a mold bottom plate;
FIG. 3 is a schematic structural view of a drag flask according to an embodiment of the present invention turned upside down to serve as a mold bottom plate;
FIG. 4 is a schematic view showing a structure in which a cope flask is placed on a drag flask according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a part of the apparatus of the V-process molding method of the double-sided mold according to the embodiment of the present invention.
In the above figures:
1. a compaction table; 2. a mold base plate; 3. a monolithic mold; 4. a pouring channel; 5. a vacuum passage hole; 6. a drag flask; 7. a cope flask; 8. casting a dead head; 9. filtering the air extraction pipe; 10. a rain sand feeder; 11. a molding sand warehouse; 12. a stripping device; 13. a sand box; 14. a film covering device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a V-method molding method of a double-sided mold, which comprises the steps of manufacturing a mold bottom plate with an air exhaust chamber, manufacturing an integral mold, molding a drag flask, molding a cope flask, taking out the integral mold, closing the mold and casting and molding; and after the lower sand box is molded, lifting and turning the lower sand box, putting the lower sand box on the plain bumper again, drilling the coated surface of the mold again to penetrate through the plastic film to form a vacuum channel, and using the lower sand box as a mold bottom plate to perform the molding step of the upper sand box.
In the embodiment, the invention provides a novel V-method molding method of a double-sided mold, which only uses one mold bottom plate, and the used mold is an integral mold (namely, the mold is made into a casting mold, and fine through holes are densely distributed on the mold according to related processes to form a vacuum channel); meanwhile, the die is integrally manufactured, so that the problem of wrong die assembly caused by manufacturing and mounting of split dies is effectively avoided, and the product percent of pass is improved. Based on the content, the invention solves the technical problems that the traditional V-method molding has high installation and positioning precision of the upper mold and the lower mold, complex operation and high mold processing difficulty, one-time molding is difficult to be randomly compatible with various molds, and the staggered molding is easy to occur when the sand boxes are combined. However, the traditional V-method modeling must adopt two die bottom plates, respectively install an upper die and a lower die, then respectively model the upper die and the lower die and close the upper die and the lower die for casting, and the former method is thousands of times to prevent vacuum leakage, but the invention breaks the limitation of the prior art.
In addition, when the die is placed on the die bottom plate, the integral die can be placed at random, and only the proper thickness of the sand mold needs to be ensured.
In a specific embodiment, the integral mold is manufactured to densely distribute fine through holes as vacuum channels having a diameter of less than 3mm around the integral mold.
In one embodiment, the V-process molding method of the double-sided mold comprises the following steps:
s1, placing one or more integral molds 3 on a mold bottom plate 2 with an air exhaust chamber, and connecting pouring channels 4 between adjacent molds;
in the step S1, as shown in fig. 1-4, the molds 3 used in the embodiment of the present invention are all integral molds, and those skilled in the art can select and design the shape of the mold 3 according to the actual casting requirement; a plurality of vacuum channel holes 5 are uniformly formed in the upper surface of the die base plate 2; according to the invention, the traditional split type die is replaced by the integral type die, so that the problem of wrong box during box closing caused by split manufacturing and installation of the die is effectively avoided, and the product percent of pass is improved.
S2, covering the plastic film baked to be in a mirror surface state on the mold base plate 2, vacuumizing by using a vacuum pump to enable the plastic film to be tightly attached to the mold base plate 2 for forming, and spraying a coating on the surface of the plastic film, wherein the plastic film is an EVA (ethylene vinyl acetate) film;
s3, placing the lower sand box 6 with the filtering and air-extracting device on the mold base plate 2 covered with the plastic film, enabling the mold 3 on the mold base plate 2 to be positioned in the lower sand box 6, and filling dry sand into the lower sand box 6 to be compacted and strickled off after the surface coating of the plastic film is dried;
in the step S3, the filled dry sand is dry sand containing no binder or additive.
S4, coating a back film on the surface of the lower sand box 6, and pumping out air in the molding sand of the lower sand box 6 to generate pressure difference inside and outside the casting mold, and keeping the vacuum degree of minus 0.04 to minus 0.05Mpa to obtain a stable lower sand mold;
in the step S4, the air in the molding sand of the drag flask 6 is evacuated to generate a pressure difference between the inside and the outside of the mold, and the mold is molded by the generated pressure difference to form a sand mold having high hardness and strength.
S5, relieving the vacuum state in the die bottom plate 2, and performing back flushing and stripping;
in the above step S5, when the vacuum state in the mold bottom plate 2 is released, the vacuum state is continuously maintained in the drag flask 6 until the poured cast product is solidified.
S6, drawing and overturning the lower sand box 6, then placing the lower sand box on the compaction table 1, and drilling through the plastic film at the fine through hole drilling position of the mold to form a vacuum channel;
in the step S6, the drag flask 6 is lifted and turned and then placed on the plain bumper 1, and at this time, the bed plate 1 is not provided on the plain bumper 1, and the drag flask 6 is used as a new bed plate.
S7, covering the drag flask 6 with a plastic film baked to be in a mirror surface state, wherein the plastic film is an EVA (ethylene vinyl acetate) film, the plastic film is tightly attached to the drag flask 6 for forming, and a pouring system is arranged after the surface of the plastic film is sprayed with a coating;
s8, placing the upper sand box 7 with the filtering and air-extracting device on the lower sand box 6, filling dry sand into the upper sand box 7 after the surface coating of the plastic film is dried, compacting and scraping;
s9, coating a back film on the surface of the upper sand box 7, and pumping out air in the molding sand of the upper sand box 7 to generate pressure difference between the inside and the outside of the casting mold, and keeping the vacuum degree of minus 0.04 to minus 0.05Mpa to form a stable upper sand mold;
in the step S9, after the air in the molding sand of the cope flask 7 is evacuated, the vacuum state is continuously maintained in the cope flask 7 until the poured casting is solidified; in addition, by evacuating air in the molding sand of the cope 7, a pressure difference is generated between the inside and the outside of the mold, and the mold is molded by the generated pressure difference to form a sand mold having high hardness and strength.
S10, lifting the cope flask 7 aside, separating the cope flask 7 from the drag flask 6, and taking out the mold 3;
s11, secondarily assembling the cope flask 7 and the drag flask 6, hoisting the assembled flasks to a pouring area for pouring, keeping the vacuum degree of-0.05 to-0.06 MPa during pouring, keeping the vacuum degree of-0.04 to-0.045 MPa after pouring is finished, stopping air suction of the casting mold after the metal is solidified to a certain degree, and automatically collapsing the sand mold when the pressure in the casting mold is close to the atmospheric pressure to obtain a complete casting.
In order to more clearly and specifically describe the V-process molding method of the double-sided mold according to the embodiment of the present invention, the following description will be made with reference to specific examples.
Comparative example 1
The comparative example provides a traditional V-method molding method, when the method is used for casting, the mold is divided into an upper box mold and a lower box mold, and molding lines are used for respectively molding the upper box and the lower box, and the method specifically comprises the following steps:
the method comprises the following steps of placing a mold bottom plate (with a mold) on a movable compaction table → positioning the mold bottom plate → moving the compaction table to carry the mold bottom plate to a film coating station → cleaning the mold, placing a riser on an upper box → taking the film by a film coating device, heating, film coating → transferring the movable compaction table to a spraying station for spraying → transferring the movable compaction table to a film coating station for buckling a blank box → transferring the movable compaction table to a spraying station for drying → transferring the movable compaction table to a sand adding station → raising the compaction table to the place → opening a raining sand adding device → vibrating the compaction table → closing the raining sand adding device → stopping vibrating the compaction table → dropping the compaction table to the place → transferring to a mold raising station for manual scraping, coating a back film (the riser is required to be pulled on the upper box) → mold raising and mold drawing and mold assembling manipulator for separating the mold from the mold → moving a box transferring vehicle to the mold raising and mold assembling manipulator → moving the mold drawing and assembling manipulator to the mold and mold assembling manipulator for placing the mold on a transfer vehicle → moving the mold and the mold unloading and the assembling manipulator → moving the mold and the transferring vehicle → moving the mold.
And finally, the mould is transferred out to a pouring system after the mould assembling and locking are carried out, and the vacuum switching and butt joint are realized in the whole process, so that the model is always in a vacuum negative pressure state.
Example 1
The embodiment provides a V-process molding method of a double-sided mold, which only uses one mold base plate, the mold is an integral mold, and the molding equipment is shown in fig. 5, and specifically includes:
(1) Manufacturing a die bottom plate 2 with an air exhaust chamber and a sand box, and drilling a large number of fine through holes on an integral die 3;
(2) Placing one or more integral molds 3 on a mold bottom plate 2 with an air exhaust chamber, and connecting pouring gates 4 between the adjacent integral molds 3;
(3) Covering the mold base plate 2 with a plastic film baked to a mirror surface state, vacuumizing to enable the plastic film to be tightly attached to the mold base plate 2 for molding, and spraying a coating on the surface of the plastic film, wherein the plastic film is an EVA plastic film;
(4) Placing a lower sand box 6 with a filtering and air-extracting device on a mold bottom plate 2 covered with a plastic film to ensure that a mold on the mold bottom plate 2 is positioned in the lower sand box 6, and filling dry sand into the lower sand box 6 for compaction and scraping after the surface coating of the plastic film is dried;
(5) Coating a back film on the surface of the lower sand box 6, and pumping out air in the molding sand of the lower sand box 6 to generate pressure difference inside and outside the casting mold, and keeping the vacuum degree of minus 0.04 to minus 0.05Mpa to obtain a stable lower sand mold;
(6) Relieving the vacuum state in the die bottom plate 2, back flushing and stripping;
(7) The lower sand box 6 is placed on the plain bumper 1 after stripping and overturning, and a plastic film is drilled through the fine through hole drilling position of the mould 3 to form a vacuum channel;
(8) Covering the lower sand box 6 with a plastic film baked to be in a mirror surface state, enabling the plastic film to be tightly attached to the lower sand box 6 for forming, spraying a coating on the surface of the plastic film, and arranging a pouring system;
(9) Placing an upper sand box 7 with a filtering and air-extracting device on a lower sand box 6, and filling dry sand into the upper sand box 7, compacting and scraping the dry sand after the surface coating of the plastic film is dried;
(10) Coating a back film on the surface of the cope flask 7, and pumping out air in the molding sand of the cope flask 7 to generate pressure difference inside and outside the casting mold, and keeping the vacuum degree of minus 0.04 to minus 0.05Mpa to form a stable cope mold;
(11) Stripping, namely lifting the upper sand box 7 aside to separate the upper sand box 7 from the lower sand box 6, and taking out the mold 3;
(12) And (3) secondarily assembling the cope flask 7 and the drag flask 6, hoisting the assembled sand flasks to a pouring area for pouring, keeping the vacuum degree of-0.05 to-0.06 Mpa during pouring, keeping the vacuum degree of-0.04 to-0.045 Mpa after pouring is finished, stopping pumping air to the casting mold after the metal is solidified to a certain degree, and automatically collapsing the sand molds when the pressure in the casting mold is close to the atmospheric pressure to obtain a complete casting.
By comparing the embodiment with the comparative example, the invention breaks through the limitation that two die base plates are needed to be adopted in the traditional V-method modeling, the upper die and the lower die are respectively installed, and then the upper die and the lower die are respectively modeled and then are combined for casting. The molding method provided by the invention only needs one mold bottom plate, and the lower sand box is used as the mold bottom plate after the molding of the lower sand box is finished, wherein thousands of square meters are used for preventing vacuum leakage in the prior art; meanwhile, the mould is integrally manufactured, so that the problem of wrong mould assembly caused by manufacturing and installation of split moulds is effectively avoided, and the product percent of pass is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A V-method molding method of a double-sided mold is characterized by comprising the steps of manufacturing a mold bottom plate with an air exhaust chamber, manufacturing an integral mold, molding a drag flask, molding a cope flask, taking out the integral mold, closing the mold and casting and molding; and after the lower sand box is molded, lifting and turning the lower sand box, putting the lower sand box on the plain bumper again, drilling the coated surface of the mold again to penetrate through the plastic film to form a vacuum channel, and using the lower sand box as a mold bottom plate to perform the molding step of the upper sand box.
2. The V-process molding method of a double-sided mold according to claim 1, wherein the integral mold is manufactured such that fine through holes are densely distributed around the integral mold, the fine through holes serving as vacuum passages and having a diameter of less than 3mm.
3. The V-process molding method of a double-sided mold according to claim 1, comprising the steps of:
placing one or more integral molds on the mold bottom plate with the air exhaust chamber, and connecting pouring channels between the adjacent molds;
covering a plastic film baked to be in a mirror surface state on the mold base plate, vacuumizing to enable the plastic film to be tightly attached to the mold base plate for molding, and spraying a coating on the surface of the plastic film;
placing a drag flask with a filtering and air-extracting device on a mold bottom plate covered with a plastic film to enable a mold on the mold bottom plate to be positioned in the drag flask, and filling dry sand into the drag flask, compacting and scraping the sand after the surface coating of the plastic film is dried;
covering a back film on the surface of the drag flask, and pumping out air in the molding sand of the drag flask to generate pressure difference between the inside and the outside of the casting mold, and keeping the vacuum degree of-0.04 to-0.05 Mpa to obtain a stable drag sand mold;
relieving the vacuum state in the die bottom plate, and performing back flushing and stripping;
the lower sand box is placed on a compaction table after being lifted and turned over, and the plastic film is drilled through the drilling position of the fine through hole of the mould to form a vacuum channel;
covering a plastic film baked to be in a mirror surface state on the drag flask, enabling the plastic film to be tightly attached to the drag flask for molding, spraying a coating on the surface of the plastic film, and arranging a pouring system;
placing an upper sand box with a filtering and air-extracting device on the lower sand box, filling dry sand into the upper sand box, compacting and scraping the dry sand after the surface coating of the plastic film is dried;
covering a back film on the surface of the cope flask, and pumping out air in the molding sand of the cope flask to generate pressure difference between the inside and the outside of the casting mold, and keeping the vacuum degree of-0.04 to-0.05 Mpa to form a stable cope mold;
lifting the cope flask to one side, separating the cope flask from the drag flask, and taking out the integral mold;
and the cope flask and the drag flask are secondarily assembled, the assembled sand flask is hoisted to a pouring area for pouring, the vacuum degree is kept between-0.05 and-0.06 Mpa during pouring, the vacuum degree is kept between-0.04 and-0.045 Mpa after pouring is finished, after the metal is solidified to a certain degree, air suction to the casting mold is stopped, and when the pressure in the casting mold is close to the atmospheric pressure, the sand mold automatically collapses to obtain a complete casting.
4. The V-process molding method of a double-sided mold according to claim 3, wherein a plurality of vacuum passage holes are uniformly formed in the surface of the mold base plate.
5. The double-sided mold V-molding method according to claim 3, wherein the drag flask is kept in a vacuum state until the cast product is solidified while the vacuum state in the bottom plate is released.
6. The double-sided mold V-molding method according to claim 3, wherein after the air in the molding sand of said cope flask is evacuated, the vacuum state is continuously maintained in said cope flask until the poured cast product is solidified.
7. The double-sided mold V-molding method according to claim 3, wherein the bottom plate is not provided on the plain-hearth table when the drag flask is placed on the plain-hearth table after being lifted and turned.
8. The double-sided mold V-molding method according to claim 3, wherein the dry sand is a dry sand free of a binder and additives.
9. The double-sided mold V-molding method according to claim 3, wherein the plastic film is an EVA film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211570556.5A CN115921782A (en) | 2022-12-08 | 2022-12-08 | V-method molding method of double-sided mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211570556.5A CN115921782A (en) | 2022-12-08 | 2022-12-08 | V-method molding method of double-sided mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115921782A true CN115921782A (en) | 2023-04-07 |
Family
ID=86698741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211570556.5A Pending CN115921782A (en) | 2022-12-08 | 2022-12-08 | V-method molding method of double-sided mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115921782A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117862427A (en) * | 2024-03-12 | 2024-04-12 | 华翔(翼城)工业装备有限公司 | Production line for V-method casting |
-
2022
- 2022-12-08 CN CN202211570556.5A patent/CN115921782A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117862427A (en) * | 2024-03-12 | 2024-04-12 | 华翔(翼城)工业装备有限公司 | Production line for V-method casting |
| CN117862427B (en) * | 2024-03-12 | 2024-05-17 | 华翔(翼城)工业装备有限公司 | Production line for V-method casting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115921782A (en) | V-method molding method of double-sided mold | |
| CN104552561A (en) | Multi-hole mould for slip casting | |
| CN109290518B (en) | V-method vertical modeling process and casting process | |
| CN106670385A (en) | V-method model casting process for casting household appliance base | |
| CN111085659A (en) | Novel V-method composite casting process system | |
| CN105382196A (en) | Casting process for preventing lost foam cast steel valve from cracking | |
| CN101623745A (en) | Process method of in-series pouring multiple lost moulds in one box | |
| CN206765029U (en) | A kind of ceramic injection forming machine | |
| CN105269766A (en) | Mold gate for pouring insulating cylinder | |
| CN111774530A (en) | V-method molding process capable of casting propeller | |
| CN112404364A (en) | Vertical boxless automatic molding machine capable of automatically compensating sand washing compaction | |
| CN206263221U (en) | Simplify the V methods moulding system and casting mold system of ingot mould model | |
| CN102974760A (en) | Lost foam casting device and casting method | |
| US2877523A (en) | Vacuum casting | |
| CN113172201B (en) | Model cluster for auxiliary impeller lost foam string casting process and auxiliary impeller lost foam string casting process | |
| CN110918886B (en) | Method for molding lost foam through die-splitting combined molding | |
| CN212760981U (en) | Sliding block die | |
| CN216881598U (en) | Molding flask structure | |
| CN216968554U (en) | Distributed high-precision vent hole die | |
| CN205684671U (en) | A kind of casting sandbox | |
| CN105855481A (en) | Casting sand box | |
| CN217223489U (en) | Sand shell for casting full-film-coated sand shell mold | |
| CN209886608U (en) | Sand mold molding die for four-gear transmission case body | |
| CN104624961A (en) | Method for improving non-solid sand filling of upper concave surface on evaporative pattern casting | |
| CN216096294U (en) | Double-deck sand box of lost foam casting usefulness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |