CN114653900B - Casting process and modeling method of foam mold of impeller housing - Google Patents
Casting process and modeling method of foam mold of impeller housing Download PDFInfo
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- CN114653900B CN114653900B CN202210291723.6A CN202210291723A CN114653900B CN 114653900 B CN114653900 B CN 114653900B CN 202210291723 A CN202210291723 A CN 202210291723A CN 114653900 B CN114653900 B CN 114653900B
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- 239000006260 foam Substances 0.000 title claims abstract description 63
- 238000005266 casting Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 26
- 244000035744 Hura crepitans Species 0.000 claims abstract description 36
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 claims description 37
- 239000011347 resin Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 210000001161 mammalian embryo Anatomy 0.000 abstract description 3
- 238000007790 scraping Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/10—Compacting by jarring devices only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C13/00—Moulding machines for making moulds or cores of particular shapes
- B22C13/12—Moulding machines for making moulds or cores of particular shapes for cores
-
- 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
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/106—Vented or reinforced cores
-
- 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
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to the technical field of sand core casting, in particular to a casting process and a molding method of a foam mold of an impeller housing, wherein the foam mold comprises a sand box, a lower box sand core, a middle box sand core and an upper box sand core; the casting process of the foam mold of the impeller housing comprises casting the lower box sand core, casting the middle box sand core and casting the upper box sand core; the mold using the foam mold has the advantages of simple structure, no consideration of draft angle and loose piece, high foam blanking, embryo making and processing efficiency, low cost, low unit price of each set, short production period, greatly reduced cost and shortened period, and the utilization of the foam mold is a good solution for producing products by a single piece.
Description
Technical Field
The invention relates to the technical field of sand core casting, in particular to a casting process and a molding method of a foam mold of an impeller housing.
Background
The sand core is cast in the casting process, namely, in order to obtain the structural appearance and the inner cavity shape of the part, other materials which are easy to mold are used for manufacturing the outer die structural shape and the inner cavity structural shape of the part in advance, then the sand core is combined according to the process, so that a cavity with the same structural size as the part is formed in the sand core, and then the cavity is poured with fluid liquid, and the liquid can be cooled and solidified to form the part with the same structural appearance as the die; when the impeller housing sand core is cast, firstly, a wood die mould is manufactured according to the technological requirements, and as various models and specifications are corresponding to one set of mould, the cost is very high.
Disclosure of Invention
The invention aims to provide a casting process and a molding method of a foam mold of an impeller housing, which can manufacture the foam mold for the impeller housing and reduce the cost.
In order to achieve the above object, in a first aspect, the present invention provides a method for molding a foam mold of an impeller housing, the foam mold including a sand box, a lower box core, a middle box core and an upper box core;
the sand box is provided with a plurality of exhaust holes, and the exhaust holes are respectively positioned at the side edges of the sand box;
the lower box sand core is arranged on the inner side of the sand box;
the middle box sand core is arranged at one side of the lower box sand core and is provided with six blind risers, six patches, twelve inner gates and an annular runner; six blind risers are uniformly distributed on the side edge of the middle box sand core, six patch are respectively connected with six blind risers, twelve in-gates are communicated with six blind risers, and the annular runner is communicated with six blind risers through twelve in-gates;
the upper box sand core is arranged on one side of the middle box sand core, the upper box sand core is provided with a straight runner and two top dead heads, and the straight runner is communicated with the annular cross runner;
the casting process of the foam mold of the impeller housing comprises the following steps:
casting the lower box sand core;
casting the middle box sand core;
and casting the upper box sand core.
Wherein, the casting the lower box sand core includes:
placing the outer die pattern on a jolt table plate, and sleeving the sand box to center the outer die pattern;
resin sand is put into the sand box, the sand core is compacted by utilizing the vibration of the jolt table, and then the sand is continuously put to fill up the shrinkage part;
and (3) overturning the sand box after the sand core is solidified, and taking down the outer die sample to obtain the lower box sand core.
Wherein, the casting the middle box sand core includes:
placing a middle box core box on a jolt table plate, and fixing the annular cross runner, the straight runner, six blind risers and twelve in-gates at preset positions;
filling resin sand into a middle box core box, and compacting the sand core by utilizing the vibration of a jolt stand;
and taking down the middle box core box after the sand core is solidified, and obtaining the middle box sand core.
Wherein, the casting the upper box sand core includes:
placing an upper box core box on a jolt table plate, and fixing the sprue, the two top dead heads and the six blind dead heads at preset positions;
filling resin sand into an upper box core box, and compacting the sand core by utilizing vibration of a jolt stand;
and taking down the upper box core box after the sand core is solidified, and obtaining the lower box sand core.
Wherein the foam mold further comprises a plurality of lifting lugs; the lifting lugs are fixedly connected with the sand box respectively and are located on the side edges of the sand box respectively.
Wherein, the foam mould also comprises a casting, a middle box annular core bar, a middle box Z-shaped core bar and six ribs; the casting is arranged on the side edge of the middle box sand core, and the middle box annular core bar is arranged inside the middle box sand core; the middle box Z-shaped core bar is arranged inside the middle box sand core; six ribs are respectively arranged on the side edges of the casting.
Wherein, the foam mould also comprises an upper box annular core bar; the upper box annular core bar is arranged inside the upper box sand core.
In a second aspect, the present invention also provides a casting process of a foam mold of an impeller housing, including a molding method of the foam mold of the impeller housing, further including:
and sleeving the lower box sand core on the inner side of the sand box, and sequentially placing the middle box sand core and the upper box sand core into the lower box sand core.
The casting process and the modeling method of the foam mold of the impeller housing, disclosed by the invention, have the advantages that the mold structure of the foam mold is simple, the draft angle and the loose piece are not considered, the foam blanking, the embryo making and the processing efficiency are high, the cost is low, each set of unit price is 2000-3000 yuan, the production period is 3 days, the cost is greatly reduced, the period is shortened, and the foam mold is a good solution for single product; the method is simple to operate and easy to learn, and the sand core vibration compaction method solves the problems of low hardness and easy deformation of the mould made of foam.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of a foam mold of the present invention.
FIG. 2 is a cross-sectional view of the flask and outer mold pattern of the present invention.
FIG. 3 is a top view of the flask and outer mold pattern of the present invention.
Fig. 4 is a cross-sectional view of the center box of the present invention.
Fig. 5 is a top view of the middle box sand core of the present invention.
Fig. 6 is a cross-sectional view of the upper core box of the present invention.
Fig. 7 is a top view of the upper box sand core of the present invention.
Fig. 8 is a flow chart of a casting process of a foam mold of an impeller housing of the present invention.
Fig. 9 is a flow chart of a method of molding a foam mold for an impeller housing of the present invention.
Fig. 10 is a flow chart of the present invention for casting the lower box sand core.
Fig. 11 is a flow chart of the present invention for casting the middle box sand core.
Fig. 12 is a flow chart of the present invention for casting the upper box sand core.
1-sand box, 2-lower box sand core, 3-casting, 4-middle box sand core, 5-middle box annular core bar, 6-upper box sand core, 7-upper box annular core bar, 8-sprue, 9-middle box Z-shaped core bar, 10-top riser, 11-blind riser, 12-inner sprue, 13-annular runner, 14-patch, 15-rib, 16-lifting lug, 17-exhaust hole, 18-external mold pattern, 20-external mold positioning core head, 21-middle box core box, 22-middle box positioning core head, 23-upper box core box and 24-upper box positioning core head.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Referring to fig. 1 to 12, in a first aspect, the present invention provides a method for molding a foam mold of an impeller housing, which comprises: the foam mold comprises a sand box 1, a lower sand core 2, a middle sand core 4 and an upper sand core 6;
the sand box 1 is provided with a plurality of exhaust holes 17, and the exhaust holes 17 are respectively arranged at the side edge of the sand box 1;
the lower box sand core 2 is arranged on the inner side of the sand box 1;
the middle box sand core 4 is arranged on one side of the lower box sand core 2, and the middle box sand core 4 is provided with six blind risers 11, six patches 14, twelve in-gates 12 and an annular runner 13; six blind risers 11 are uniformly distributed on the side edge of the middle box sand core 4, six patch 14 are respectively connected with the six blind risers 11, twelve in-gates 12 are communicated with the six blind risers 11, and the annular runner 13 is communicated with the six blind risers 11 through twelve in-gates 12;
the upper box sand core 6 is arranged on one side of the middle box sand core 4, the upper box sand core 6 is provided with a straight runner 8 and two top risers 10, and the straight runner 8 is communicated with the annular cross runner 13;
the casting process of the foam mold of the impeller housing comprises the following steps:
s1, casting the lower box sand core 2;
the method comprises the following specific steps:
s11, placing the outer die pattern 18 on a jolt table plate, and sleeving the sand box 1 to center the outer die pattern 18;
the outer mold pattern 18 was placed on a jolt table plate, the flask 1 was fitted and the outer mold pattern 18 was placed in the center, the outer mold pattern 18 being a foam mold having an apparent density of 20Kg/m3.
S12, resin sand is placed into the sand box 1, a sand core is compacted by utilizing vibration of a jolt table, and then sand is continuously placed to fill up the shrinkage part;
resin sand mixed by a continuous sand mixer is placed in the sand box 1, sand is evenly placed layer by layer, the sand is tightly pressed by proper force at the corner position, foam deformation cannot be caused by excessive force, a sand core is tightly pressed mainly by vibration, a jolt-angle switch is started after the sand core is fully placed, vibration is stopped for 30 seconds, and then the sand is placed to fill the shrinkage part and be scraped by a sand scraping plate.
S13, after the sand core is solidified, turning over the sand box 1, and taking down the outer mold pattern 18 to obtain the lower box sand core 2;
after the sand core is solidified, the sand box 1 is turned over, the foam mould is taken off layer by layer from top to bottom, residues on the surface of the clean sand core are cleaned, and finally the lower box sand core 2 is formed.
S2, casting the middle box sand core 4;
the method comprises the following specific steps:
s21, placing a middle box core box 21 on a jolt table plate, and fixing the annular cross runner 13, the straight runner 8, the six blind risers 11 and the twelve in-gates 12 at preset positions;
and placing a middle box core box 21 on a jolt table plate, fixing the sprue 8, the annular runner 13, the six blind risers 11 and the twelve inner gates 12 on corresponding positions by using bamboo sticks, wherein the middle box core box 21 is a foam mold, and the apparent density is 20Kg/m3.
S22, filling resin sand into the middle box core box 21, and compacting the sand core by utilizing the vibration of a jolt stand;
the mixed resin sand is filled into the middle box core box 21, the corner positions of the sprue 8 and the blind riser 11 are tightly pressed by hands with moderate force (attention is paid to the fact that foam cannot be deformed too hard and the sand core is mainly compacted by vibration), then the sand is filled layer by layer, a jolt table switch is started, vibration is stopped for 20 seconds, the sand is filled, and then 3 female lifting lugs 16 are inserted into triangular positions (cannot be higher than a plane) and are scraped by a sand scraping plate.
S23, taking down the middle box core box 21 after the sand core is solidified, and preparing the middle box sand core 4;
and after the sand core is solidified, firstly removing the intermediate foam, then lifting the sand core by using a lifting hook, finally removing the foam outside, and cleaning residues on the surface of the clean sand core to obtain the complete middle box sand core 4.
S3, casting the upper box sand core 6;
the method comprises the following specific steps:
s31, placing an upper box core box 23 on a jolt table plate, and fixing the sprue 8, the two top dead heads 10 and the six blind dead heads 11 at preset positions;
the upper box core box 23 is placed on a jolt table plate, the sprue 8, the two top dead heads 10 and the six blind dead heads 11 are fixed at corresponding positions by bamboo sticks, and the upper box core box 23 is a foam mold and has an apparent density of 20Kg/m3.
S32, filling resin sand into the upper box core box 23, and compacting the sand core by utilizing the vibration of a jolt stand;
the mixed resin sand is filled into an upper box core box 23, the corner positions of the sprue 8, the two top risers 10 and the six blind risers 11 are required to be tightly pressed by moderate force, the sand cannot be forcefully and forcefully deformed to deform foam, the sand cores are mainly compacted by vibration, then the sand is filled layer by layer, a jolt table switch is started, vibration is stopped for 20 seconds, the sand is filled, and then 3 female lifting lugs 16 are inserted into triangular positions (cannot be higher than a plane) and are scraped by a sand scraping plate.
S33, after the sand core is solidified, taking down the upper box core box 23 to obtain the lower box sand core 2;
and after the sand core is solidified, firstly removing the intermediate foam, then lifting the sand core by using a lifting hook, finally removing the foam outside, and cleaning residues on the surface of the clean sand core to obtain the complete upper box sand core 6.
Further, the foam mold also includes a plurality of lifting lugs 16; the lifting lugs 16 are fixedly connected with the sand box 1 respectively and are located on the side edges of the sand box 1 respectively.
In this embodiment, the lifting lugs 16 may be fixed to the side of the sand box 1 by welding, and the lifting lugs 16 are used to facilitate lifting and overturning of the sand box 1.
Further, the foam mold further comprises a casting 3, a middle box annular core bar 5, a middle box Z-shaped core bar 9 and six ribs 15; the casting 3 is arranged on the side edge of the middle box sand core 4, and the middle box annular core bar 5 is arranged inside the middle box sand core 4; the middle box Z-shaped core bar 9 is arranged inside the middle box sand core 4; six ribs 15 are respectively arranged on the side edges of the casting 3.
In this embodiment, when manufacturing the middle box sand core 4, in step S22, the mixed resin sand is first filled into the middle box core box 21, the corner positions of the sprue 8 and the blind riser 11 are required to be tightly pressed by hands with moderate force (the foam cannot be deformed too hard and the sand core is mainly compacted by vibration), then the sand is filled layer by layer, the jolt-square switch is started, vibration is stopped for 20 seconds, then the middle box Z-shaped core bars 9 are inserted into the middle positions of the ribs 15 one by one, then the middle box annular core bars 5 are pressed into the middle positions of the annular cross runners 13 and the core heads, then the sand is filled, and then the 3 female lugs 16 are inserted into triangular positions (cannot be higher than the plane) and are scraped by a sand scraping plate; the casting 3, the middle box annular core bar 5 and the middle box Z-shaped core bar 9 can improve the strength of the middle box sand core 4.
Further, the foam mold also comprises an upper box annular core bar 7; the upper box annular core bar 7 is arranged inside the upper box sand core 6.
In this embodiment, when the upper box sand core 6 is manufactured, in step S32, the mixed resin sand is filled into the upper box core box 23, the corner positions of the sprue 8 and the blind riser 11 are tightly pressed by a proper force (the foam cannot be deformed by excessive force and the sand core is mainly compacted by vibration), then the sand is filled layer by layer, the jolt-ramming table switch is started, the vibration is stopped for 20 seconds, the upper box annular core 7 is put into the sand, then the sand is filled, and then the 3 female lugs 16 are inserted into triangular positions (cannot be higher than a plane) and are scraped by a sand scraping plate; the upper box annular core bar 7 can improve the strength of the upper box sand core 6.
Further, the lower box sand core 2 is provided with an outer mold positioning core head 20; the outer mold positioning core head 20 is positioned at one side of the lower box sand core 2; the middle box sand core 4 is provided with a middle box positioning core head 22; the middle box positioning core head 22 is positioned at one side of the middle box sand core 4; the upper box sand core 6 is provided with an upper box positioning core head 24; the upper box positioning core print 24 is positioned on one side of the upper box sand core 6.
In the present embodiment, the rotation of the lower box sand core 2 can be restricted by the outer mold positioning core head 20; the rotation of the middle box sand core 4 can be limited by utilizing the middle box positioning core head 22; the upper box positioning core head 24 can limit the rotation of the upper box sand core 6; .
In a second aspect, the present invention also provides a casting process of a foam mold of an impeller housing, including a molding method of the foam mold of the impeller housing, further including:
s4, sleeving the lower box sand core 2 on the inner side of the sand box 1, and sequentially placing the middle box sand core 4 and the upper box sand core 6 into the lower box sand core 2;
the lower box sand core 2 is sleeved on the inner side of the sand box 1, the middle box sand core 4 is firstly matched with the lower box sand core 2, the outer die positioning core head 20 corresponds to the middle box positioning core head 22, then the upper box sand core 6 is matched with the lower box sand core 2, and the outer die positioning core head 20 corresponds to the upper box positioning core head 24.
According to the casting process and the modeling method of the foam mold of the impeller housing, the foam mold is designed according to the requirements of a product casting 3 diagram and material specification, the middle box sand core 4 is provided with 6 lumbar circular blind risers 11 corresponding to six ribs 15 on a middle flange of the casting 3, the bottom of each blind riser 11 is provided with a patch 14 for facilitating feeding of each blind riser 11, the inner pouring gate 12 is connected with each blind riser 11 (molten steel feeding), the lower part of the straight pouring gate 8 is connected with the annular cross pouring gate 13, the middle box annular core bars 5 are placed at the middle positions of the annular cross pouring gate 13 and the core heads according to the requirements, and the middle box Z-shaped core bars 9 are placed between the two ribs 15 so as to increase the strength of the middle box sand core 4 and prevent breakage and deformation of the sand core. The upper box sand core 6 is provided with the straight pouring gate 8 and is communicated with the middle box sand core 4, the top riser 10 is uniformly distributed at the position, close to the inner hole, of the upper flange and is aligned with three ribs 15 respectively, so that the top riser 10 is beneficial to feeding hot joints at the positions of the ribs 15, and the upper box annular core bar 7 is placed at the middle position of the straight pouring gate 8 and the core head according to the position, so that the strength of the upper box sand core 6 is increased, and the sand core is prevented from deforming. The mold using the foam mold has simple structure, does not consider the draft angle and the loose piece, has high foam blanking, embryo making and processing efficiency and low cost, has a unit price of 2000-3000 yuan per set and 3 days of production period, greatly reduces the cost and shortens the period, and is a good solution for producing products by single piece; the method is simple to operate and easy to learn, and the sand core vibration compaction method solves the problems of low hardness and easy deformation of the mould made of foam.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (5)
1. The molding method of the foam mold of the impeller housing is characterized in that the foam mold comprises a sand box, a lower box sand core, a middle box sand core and an upper box sand core;
the sand box is provided with a plurality of exhaust holes, and the exhaust holes are respectively positioned at the side edges of the sand box;
the lower box sand core is arranged on the inner side of the sand box;
the middle box sand core is arranged at one side of the lower box sand core and is provided with six blind risers, six patches, twelve inner gates and an annular runner; six blind risers are uniformly distributed on the side edge of the middle box sand core, six patch are respectively connected with six blind risers, twelve in-gates are communicated with six blind risers, and the annular runner is communicated with six blind risers through twelve in-gates;
the upper box sand core is arranged on one side of the middle box sand core, the upper box sand core is provided with a straight runner and two top dead heads, and the straight runner is communicated with the annular cross runner;
casting the lower box sand core comprises:
placing the outer die pattern on a jolt table plate, and sleeving the sand box to center the outer die pattern;
resin sand is put into the sand box, the sand core is compacted by utilizing the vibration of the jolt table, and then the sand is continuously put to fill up the shrinkage part;
after the sand core is solidified, the sand box is turned over, the outer mold pattern is taken down, and the lower box sand core is manufactured;
casting the middle box sand core comprises:
placing a middle box core box on a jolt table plate, and fixing the annular cross runner, the straight runner, six blind risers and twelve in-gates at preset positions;
filling resin sand into a middle box core box, and compacting the sand core by utilizing the vibration of a jolt stand;
taking down the middle box core box after the sand core is solidified, and preparing the middle box sand core;
casting the upper box sand core comprises:
placing an upper box core box on a jolt table plate, and fixing the sprue, the two top dead heads and the six blind dead heads at preset positions;
filling resin sand into an upper box core box, and compacting the sand core by utilizing vibration of a jolt stand;
and taking down the upper box core box after the sand core is solidified, and obtaining the lower box sand core.
2. A method of molding a foam mold for an impeller housing according to claim 1,
the foam mold further comprises a plurality of lifting lugs; the lifting lugs are fixedly connected with the sand box respectively and are located on the side edges of the sand box respectively.
3. A method of molding a foam mold for an impeller housing according to claim 2, wherein,
the foam mold further comprises a casting, a middle box annular core bar, a middle box Z-shaped core bar and six ribs; the casting is arranged on the side edge of the middle box sand core, and the middle box annular core bar is arranged inside the middle box sand core; the middle box Z-shaped core bar is arranged inside the middle box sand core; six ribs are respectively arranged on the side edges of the casting.
4. A method of molding a foam mold for an impeller housing according to claim 3,
the foam mold further comprises an upper box annular core bar; the upper box annular core bar is arranged inside the upper box sand core.
5. A casting process of a foam mold of an impeller housing, comprising a molding method of a foam mold of an impeller housing according to any one of claims 1 to 4, characterized by further comprising:
and sleeving the lower box sand core on the inner side of the sand box, and sequentially placing the middle box sand core and the upper box sand core into the lower box sand core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210291723.6A CN114653900B (en) | 2022-03-23 | 2022-03-23 | Casting process and modeling method of foam mold of impeller housing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210291723.6A CN114653900B (en) | 2022-03-23 | 2022-03-23 | Casting process and modeling method of foam mold of impeller housing |
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| CN114653900A CN114653900A (en) | 2022-06-24 |
| CN114653900B true CN114653900B (en) | 2023-12-08 |
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