CN114653900A - Casting process and molding method of foam mold of impeller housing - Google Patents
Casting process and molding method of foam mold of impeller housing Download PDFInfo
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- CN114653900A CN114653900A CN202210291723.6A CN202210291723A CN114653900A CN 114653900 A CN114653900 A CN 114653900A CN 202210291723 A CN202210291723 A CN 202210291723A CN 114653900 A CN114653900 A CN 114653900A
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- 239000006260 foam Substances 0.000 title claims abstract description 68
- 238000005266 casting Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000000465 moulding Methods 0.000 title claims abstract description 19
- 244000035744 Hura crepitans Species 0.000 claims abstract description 36
- 239000004576 sand Substances 0.000 claims description 34
- 239000011347 resin Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 14
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007790 scraping Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 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
- 238000005056 compaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006870 function Effects 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
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- 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
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- 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
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- 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 mould of the impeller housing comprises the steps of casting the lower box sand core, casting the middle box sand core and casting the upper box sand core; the mould using the foam mould has the advantages of simple structure, no consideration of draft angle and loose piece, high foam blanking, blank making and processing efficiency, low cost, low unit price of each set, short production period, great reduction of cost and cycle, and is a good solution for producing products by using the foam mould aiming at 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
In the casting process, in order to obtain the structural appearance and the inner cavity shape of a part, other easily-formed materials are made into the external mold structural shape and the inner cavity structural shape of the part in advance, then the sand cores are combined according to the process, so that a cavity with the same structural size as the part is formed in each sand core, then flowing liquid is poured into the cavity, and the part with the same appearance structure as the mold can be formed after the liquid is cooled and solidified; when the sand core of the impeller housing is cast, firstly, a wood mold is manufactured according to the process requirements, and because various models and specifications correspond to one set of mold, 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 of molding a foam mold for an impeller housing, the foam mold comprising 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 which are respectively positioned on 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 on one side of the lower box sand core and is provided with six blind risers, six patches, twelve ingates and an annular cross gate; the six blind risers are uniformly distributed on the side edge of the sand core of the middle box, the six patches are respectively connected with the six blind risers, twelve ingates are communicated with the six blind risers, and the annular cross gate is communicated with the six blind risers through the twelve ingates;
the upper box sand core is arranged on one side of the middle box sand core and is provided with a sprue and two top risers, and the sprue is communicated with the annular cross gate;
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 casting the drag core comprises:
putting the outer mold sample on a plain bumper plate, and sleeving the sand box to center the outer mold sample;
putting resin sand into the sand box, compacting the sand core by using the vibration of the jolt ramming platform, and then continuously putting the sand to fill and level the lower shrinkage part;
and after the sand core is solidified, turning over the sand box, and taking down the external mold pattern to obtain the lower box sand core.
Wherein casting the tundish sand core comprises:
placing the middle box core box on a plain jolter flat plate, and fixing the annular cross pouring channel, the straight pouring channel, the six blind risers and the twelve ingates at preset positions;
filling resin sand into a middle box core box, and compacting the sand core by using the vibration of a jolt ramming platform;
and (4) taking down the middle box core box after the sand core is solidified to obtain the middle box sand core.
Wherein casting the upper box sand core comprises:
placing the upper box core box on a plain jolter flat plate, and fixing the sprue, the two top risers and the six blind risers at preset positions;
filling resin sand into an upper box core box, and compacting the sand core by using the vibration of a jolt ramming platform;
and after the sand core is solidified, taking down the upper box core box to obtain 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 positioned on the side edges of the sand box respectively.
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 is arranged inside the middle box sand core; the middle box Z-shaped core bone is arranged inside the middle box sand core; and the six ribs are respectively arranged on the side edges of the casting.
Wherein the foam mold further comprises an upper box annular core bar; the upper box annular core is arranged inside the upper box sand core.
In a second aspect, the present invention further provides a casting process of a foam mold for an impeller housing, including a method for molding the foam mold for the impeller housing, further including:
and sleeving the lower box sand core on the inner side of the sand box, and then sequentially placing the middle box sand core and the upper box sand core into the lower box sand core.
According to the casting process and the molding method of the foam mold of the impeller housing, the mold structure of the foam mold is simple, the draft and the loose piece are not considered, the foam blanking, the blank making and the processing efficiency are high, the cost is low, the unit price of each set 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 producing products by one piece; the method has simple operation and easy learning, and the sand core vibration compaction solves the problems of low hardness and easy deformation of the foam mould.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a foam mold of the present invention.
FIG. 2 is a cross-sectional view of a flask and an exterior mold pattern of the present invention.
FIG. 3 is a top view of the flask and the exterior mold pattern of the present invention.
FIG. 4 is a cross-sectional view of the center core box of the present invention.
Figure 5 is a top view of the center box sand core of the present invention.
FIG. 6 is a cross-sectional view of the upper core box of the present invention.
Figure 7 is a top view of the cope sand core of the present invention.
Fig. 8 is a flowchart 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.
Figure 10 is a flow chart of the present invention for casting the drag core.
Figure 11 is a flow chart of the present invention for casting the tundish sand core.
Figure 12 is a flow chart of the present invention for casting the cope 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 cross runner, 14-patch, 15-rib, 16-lifting lug, 17-vent hole, 18-outer mold pattern, 20-outer 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
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to 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, comprising: the foam mould comprises a sand box 1, a lower box sand core 2, a middle box sand core 4 and an upper box sand core 6;
the sand box 1 is provided with a plurality of exhaust holes 17, and the exhaust holes 17 are respectively positioned at the side edges 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 ingates 12 and an annular cross gate 13; the six blind risers 11 are uniformly distributed on the side edge of the middle box sand core 4, the six patches 14 are respectively connected with the six blind risers 11, twelve ingates 12 are communicated with the six blind risers 11, and the annular cross gate 13 is communicated with the six blind risers 11 through the twelve ingates 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 sprue 8 and two top risers 10, and the sprue 8 is communicated with the annular cross gate 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 mold pattern 18 on a plain jolter plate, and sleeving the sand box 1 to center the outer mold pattern 18;
the outer mold pattern 18 was placed on a plain jolt plate, the flask 1 was slipped on and the outer mold pattern 18 was centered, and the outer mold pattern 18 was a foam mold having an apparent density of 20Kg/m 3.
S12, putting resin sand into the sand box 1, compacting the sand core by using the vibration of the jolt ramming platform, and then continuously putting the sand to fill and level the lower shrinkage part;
resin sand mixed by a continuous sand mixer is placed into the sand box 1, sand is uniformly placed layer by layer, the sand is pressed tightly by hands at the corner position with moderate force, the sand core is compacted mainly by vibration after the sand core is fully placed, the switch of a jolt ramming table is started, the vibration is stopped for 30 seconds, and then the sand is placed to fill the contracted part and the contracted part is scraped by a sand scraping plate.
S13, after the sand core is solidified, turning over the sand box 1, and taking down the external mold pattern 18 to obtain the lower box sand core 2;
and after the sand core is solidified, turning the sand box 1 over, taking the foam mould layer by layer from top to bottom, cleaning up residues on the surface of the sand core, and finally forming the lower box sand core 2.
S2, casting the middle box sand core 4;
the method comprises the following specific steps:
s21, placing the middle box core box 21 on a plain jolt platform flat plate, and fixing the annular cross gate 13, the sprue 8, the six blind risers 11 and the twelve ingates 12 at preset positions;
the middle box core box 21 is placed on a plain jolter flat plate, the sprue 8, the annular cross runner 13, the six blind risers 11 and the twelve ingates 12 are fixed at corresponding positions through bamboo sticks, and the middle box core box 21 is a foam die and has an apparent density of 20Kg/m 3.
S22, filling the resin sand into the middle box core box 21, and compacting the sand core by using the vibration of the jolt ramming platform;
filling the mixed resin sand into a middle box core box 21, pressing the sand tightly by hands at the corner positions of the sprue 8 and the blind riser 11 (the sand core is compacted mainly by vibration because the foam cannot be deformed by too strong force due to attention), then filling the sand layer by layer, starting a jolt platform switch, stopping vibration for 20 seconds, filling the sand, inserting 3 female-shaped lifting lugs 16 at triangular positions (the lifting lugs cannot be higher than the plane), and leveling by a scraping plate.
S23, after the sand core is solidified, taking down the middle box core box 21 to obtain the middle box sand core 4;
and after the sand core is cured, taking the intermediate foam off, then lifting the sand core by using a lifting hook, finally removing the foam outside, and cleaning the residues on the surface of the 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 the upper box core box 23 on a plain jolt platform flat plate, and fixing the sprue 8, the two top risers 10 and the six blind risers 11 at preset positions;
an upper box core box 23 is placed on a plain jolter flat plate, the sprue 8, the two top risers 10 and the six blind risers 11 are fixed at corresponding positions through bamboo sticks, and the upper box core box 23 is a foam die and has an apparent density of 20Kg/m 3.
S32, filling resin sand into the upper box core box 23, and compacting the sand core by using the vibration of the jolt ramming platform;
filling mixed resin sand into an upper box core box 23, pressing the sand tightly by using hands at the corner positions of the sprue 8, the two top risers 10 and the six blind risers 11 by moderate force to avoid excessively violent foam deformation, compacting the sand core mainly by vibration, filling the sand layer by layer, starting a jolt platform switch, stopping vibration for 20 seconds, filling the sand, inserting 3 female-shaped lifting lugs 16 at triangular positions (which cannot be higher than a plane) and leveling by a scraping plate.
After the S33 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 cured, taking the middle foam off, then lifting the sand core by using a lifting hook, finally removing the foam outside, and cleaning the residues on the surface of the sand core to obtain the complete upper box sand core 6.
Further, the foam mold further comprises a plurality of lifting lugs 16; the lifting lugs 16 are respectively fixedly connected with the sand box 1 and are respectively positioned on the side edges of the sand box 1.
In this embodiment, a plurality of 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 the lifting and turning of the sand box 1.
Further, the foam mould also comprises a casting 3, a middle box annular core rod 5, a middle box Z-shaped core rod 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 rod 5 is arranged inside the middle box sand core 4; the middle box Z-shaped core frame 9 is arranged inside the middle box sand core 4; the six ribs 15 are respectively arranged on the side edges of the casting 3.
In this embodiment, when manufacturing the center box sand core 4, in step S22, the mixed resin sand is first filled into the center box core box 21, the corner positions of the sprue 8 and the blind riser 11 are pressed by hand with a moderate force (the sand core is compacted mainly by vibration because the foam cannot be deformed by excessive force), then the sand is filled layer by layer, the switch of the jolt platform is started, the vibration is stopped for 20 seconds, the center box Z-shaped core ribs 9 are inserted into the middle positions of the ribs 15 one by one, then the center box annular core rib 5 is pressed into the middle positions of the annular sprue 13 and the core head, then the sand is filled, and 3 female-shaped lifting lugs 16 are inserted into the triangular positions (cannot be raised out of the plane) and scraped flat by a scraping plate; the casting 3, the middle box annular core frame 5 and the middle box Z-shaped core frame 9 can improve the strength of the middle box sand core 4.
Further, the foam mould also comprises an upper box annular core 7; the upper box annular core 7 is arranged inside the upper box sand core 6.
In this embodiment, when manufacturing the upper box sand core 6, in step S32, the mixed resin sand needs to be filled into the upper box core box 23, the corner positions of the sprue 8 and the blind riser 11 need to be pressed tightly by hand with moderate force (the sand core is compacted mainly by vibration because the foam cannot be deformed by excessive force), then the sand is filled layer by layer, the switch of the jolt platform 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-shaped lifting lugs 16 are inserted in a triangular position (cannot be higher than the plane) and are scraped flat by a scraping plate; the upper box annular core 7 can improve the strength of the upper box sand core 6.
Further, the lower box sand core 2 is provided with an external mold positioning core head 20; the external mold positioning core head 20 is positioned on 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 on 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 lower box sand core 2 can be restricted from rotating by the outer mold positioning core head 20; the middle box sand core 4 can be limited to rotate by the middle box positioning core head 22; the upper box sand core 6 can be limited to rotate by the upper box positioning core head 24; .
In a second aspect, the present invention further provides a casting process of a foam mold for an impeller housing, including a method for molding the foam mold for 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;
firstly, the lower box sand core 2 is sleeved on the inner side of the sand box 1, the middle box sand core 4 and the lower box sand core 2 complete box assembling, the outer mold positioning core head 20 corresponds to the middle box positioning core head 22, then the upper box sand core 6 and the lower box sand core 2 complete box assembling, and the outer mold positioning core head 20 corresponds to the upper box positioning core head 24.
The casting process and the modeling method of the foam mold of the impeller housing are characterized in that the foam mold designs the casting process of the foam mold of the impeller housing according to the drawing of a product casting 3 and the requirement of material specification, the middle box sand core 4 is provided with 6 oval 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 the patch 14 to facilitate feeding of the blind riser 11, the inner sprue 12 is connected with the blind riser 11 (molten steel feeding), the lower part of the straight runner 8 is connected with the annular cross runner 13, the middle box annular core rib 5 is arranged at the middle position of the annular cross runner 13 and the core head, the middle box Z-shaped core rib 9 is arranged between the two ribs 15 to increase the strength of the middle box sand core 4 and prevent the sand core from breaking and deforming. The upper box sand core 6 is provided with the sprue 8 and is communicated with the middle box sand core 4, the top dead heads 10 are uniformly distributed and placed at the positions, close to the inner holes, of the upper flanges and are respectively aligned with the three ribs 15, so that the top dead heads 10 can conveniently feed heat joints at the positions of the ribs 15, and the upper box annular core rod 7 is placed at the middle position of the sprue 8 and the core head so as to increase the strength of the upper box sand core 6 and prevent the sand core from deforming. The mould using the foam mould has simple structure, does not consider the draft and the loose piece, has high foam blanking, blank making and processing efficiency and low cost, the unit price of each set is 2000-3000 yuan, the production period is 3 days, the cost is greatly reduced and the period is shortened, and the foam mould is a good solution for producing products by single piece; the method has simple operation and easy learning, and the sand core vibration compaction solves the problems of low hardness and easy deformation of the foam mould.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
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 which are respectively positioned on 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 on one side of the lower box sand core and is provided with six blind risers, six patches, twelve ingates and an annular cross gate; the six blind risers are uniformly distributed on the side edge of the sand core of the middle box, the six patches are respectively connected with the six blind risers, twelve ingates are communicated with the six blind risers, and the annular cross gate is communicated with the six blind risers through the twelve ingates;
the upper box sand core is arranged on one side of the middle box sand core and is provided with a sprue and two top risers, and the sprue is communicated with the annular cross gate;
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.
2. A method of molding a foam mold for an impeller casing according to claim 1,
the casting the lower box sand core comprises:
putting the outer mold sample on a plain bumper plate, and sleeving the sand box to center the outer mold sample;
putting resin sand into the sand box, compacting the sand core by using the vibration of the jolt ramming platform, and then continuously putting the sand to fill and level the lower shrinkage part;
and after the sand core is solidified, turning over the sand box, and taking down the external mold pattern to obtain the lower box sand core.
3. A method of molding a foam mold for an impeller casing according to claim 2,
the casting the center box sand core comprises:
placing the middle box core box on a plain jolter flat plate, and fixing the annular cross pouring channel, the straight pouring channel, the six blind risers and the twelve ingates at preset positions;
filling resin sand into a middle box core box, and compacting the sand core by using the vibration of a jolt ramming platform;
and (4) taking down the middle box core box after the sand core is solidified to obtain the middle box sand core.
4. A method of molding a foam mold for an impeller casing according to claim 3,
the casting the upper box sand core comprises:
placing an upper box core box on a plain jolter flat plate, and fixing the sprue, the two top risers and the six blind risers at preset positions;
filling resin sand into an upper box core box, and compacting the sand core by using the vibration of a jolt ramming platform;
and after the sand core is solidified, taking down the upper box core box to obtain the lower box sand core.
5. The method of molding a foam mold for an impeller housing according to claim 4,
the foam mold further comprises a plurality of lifting lugs; the lifting lugs are fixedly connected with the sand box respectively and are positioned on the side edges of the sand box respectively.
6. The method of molding a foam mold for an impeller housing according to claim 5,
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 is arranged inside the middle box sand core; the middle box Z-shaped core bone is arranged inside the middle box sand core; and the six ribs are respectively arranged on the side edges of the casting.
7. The method of molding a foam mold for an impeller housing according to claim 6,
the foam mould also comprises an upper box annular core rod; the upper box annular core is arranged inside the upper box sand core.
8. A casting process of a foam mold of an impeller housing, comprising the method for molding the foam mold of the impeller housing according to any one of claims 1 to 7, further comprising:
sleeving the lower box sand core on the inner side of the sand box, and then 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 |
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| 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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| CN114653900B CN114653900B (en) | 2023-12-08 |
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| CN113814363A (en) * | 2021-09-16 | 2021-12-21 | 黄石新兴管业有限公司 | Bottom shower type in-core pouring system for large steel ingot mold casting |
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| CN114653900B (en) | 2023-12-08 |
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