CN114210944B - Composite 3D printing preparation method of casting sand mold with chill and casting sand mold - Google Patents
Composite 3D printing preparation method of casting sand mold with chill and casting sand mold Download PDFInfo
- Publication number
- CN114210944B CN114210944B CN202111429721.0A CN202111429721A CN114210944B CN 114210944 B CN114210944 B CN 114210944B CN 202111429721 A CN202111429721 A CN 202111429721A CN 114210944 B CN114210944 B CN 114210944B
- Authority
- CN
- China
- Prior art keywords
- printing
- chill
- casting
- mold
- sand
- 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.)
- Active
Links
- 238000010146 3D printing Methods 0.000 title claims abstract description 131
- 239000004576 sand Substances 0.000 title claims abstract description 127
- 238000005266 casting Methods 0.000 title claims abstract description 89
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 13
- 238000004458 analytical method Methods 0.000 claims description 12
- 238000005498 polishing Methods 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000007849 furan resin Substances 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 244000137852 Petrea volubilis Species 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000000600 sorbitol Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 90
- 239000000463 material Substances 0.000 description 3
- 238000007528 sand casting Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The application discloses a composite 3D printing preparation method of a casting sand mold with a chill and the casting sand mold, which aims to solve the problems of inconvenient installation and high cost of the chill in the existing 3D printing sand mold casting model in the prior art. The method comprises the following steps: adopting a 3D printing process, and manufacturing a 3D printing sand mold according to a product drawing; adopting a wire 3D printing process, and manufacturing a 3D printing wire shell according to the same product drawing, wherein the 3D printing wire shell is matched with the 3D printing sand mould; assembling the 3D printing sand mold and the 3D printing wire shell mold, wherein a gap between the 3D printing sand mold and the 3D printing wire shell mold forms a chill cavity; adding a chromite sand mixture into the chill cavity, compacting and solidifying the chromite sand mixture to form a chill; and removing the shell mold of the 3D printing wire rod, and processing to obtain the casting sand mold with the chill. The application can be used for arranging the chill at any position and in any shape, reduces the manufacturing cost and expands the application range of the 3D printing sand mould.
Description
Technical Field
The application relates to the technical field of dies, in particular to a composite 3D printing preparation method of a casting sand mold with chill and the casting sand mold.
Background
With the popularization and application of 3D printing technology, a method for casting production by using a 3D printing sand mold is becoming popular in the industry. The method for producing the sand mold by 3D printing can replace the traditional wood pattern modeling process, the obtained sand mold has compressive strength which exceeds that of the wood pattern sand mold by one time, and meanwhile, various complex sand mold structures can be directly printed and formed, so that the method has extremely high formability.
When the casting is cooled and solidified in the 3D printing sand casting model, the finally solidified part is also easy to have shrinkage porosity, shrinkage cavity and other defects, and the quality of the casting is seriously affected. For this purpose, the casting needs to be fed by adopting the cooperation of the chill and the riser, so that the casting is directionally solidified.
However, the existing 3D printing sand mold is added with the chill, and the chill is required to be processed by profiles such as carbon steel, and the like, so that the cost is high and the period is long. Meanwhile, the chiller is also required to be embedded at a specific position, so that the operation is inconvenient, and the mounting cannot be realized due to the structural limitation.
Disclosure of Invention
The application provides a composite 3D printing preparation method of a casting sand mold with a chill and the casting sand mold, which are used for solving the problems of inconvenient installation and high cost of the chill in the existing 3D printing sand mold casting mold in the prior art, and the method can be used for arranging the chill at any position and in any shape, so that the manufacturing cost is reduced.
The technical scheme adopted by the application is as follows:
a composite 3D printing preparation method of a casting sand mold with chill comprises the following steps:
step S1, adopting a 3D printing process, and manufacturing a 3D printing sand mold according to a product drawing;
s2, manufacturing a 3D printing wire shell according to the same product drawing in the step S1 by adopting a wire 3D printing process, wherein the 3D printing wire shell is matched with the 3D printing sand mould;
s3, assembling the 3D printing sand mold and the 3D printing wire shell mold, wherein a gap between the 3D printing sand mold and the 3D printing wire shell mold forms a chill cavity;
s4, adding a chromite sand mixture into the chill cavity, compacting and solidifying the chromite sand mixture to form a chill;
and S5, removing the shell mold of the 3D printing wire rod, and processing to obtain the casting sand mold with the chill.
Further, the step S1 of manufacturing a 3D printing sand mold according to the same product drawing by adopting a 3D printing process specifically includes the following steps:
step S11, carrying out casting process analysis according to a product drawing, and determining a casting system and a chill structure;
step S12, carrying out three-dimensional drawing design according to casting process analysis, wherein a casting system and a chill structure are reflected in the three-dimensional drawing, and the chill structure comprises the position, the shape and the size of a chill;
step S13, carrying out three-dimensional modeling design according to a three-dimensional drawing, and reserving process feeding amount;
step S14, manufacturing a 3D printing sand mold on a sand mold 3D printer according to three-dimensional modeling;
and step S15, cleaning for standby after the 3D printing sand mold is manufactured.
Further, the step S2 of manufacturing a 3D printed wire shell according to a product drawing by using a wire 3D printing process specifically includes the following steps:
step 21, carrying out casting process analysis according to a product drawing, and determining a casting system and a chill structure, wherein the chill structure comprises the position, the shape and the size of a chill;
s22, carrying out three-dimensional drawing design on the appearance of the product according to casting process analysis;
s23, carrying out three-dimensional modeling design of the product appearance according to a three-dimensional drawing of the product appearance;
step S24, manufacturing a 3D printing wire shell type on a wire 3D printer according to three-dimensional modeling of the appearance of the product;
and S25, polishing the 3D printing wire shell by using 130-150-mesh sand paper, or spraying photosensitive resin on the surface of the 3D printing wire shell, and polishing by using sand paper after curing for later use.
Further, the chromite sand mixture comprises chromite sand, thermosetting resin and curing agent, wherein the use amount of the thermosetting resin is 2-5% of the weight of the chromite sand, and the use amount of the curing agent is 0.3-0.5% of the weight of the thermosetting resin.
Further, the particle size of the chromite sand is 70-140 meshes.
Further, the thermosetting resin is phenolic resin, furan resin or modified phenolic resin.
Further, the curing agent is silane or sorbitol propionate.
Further, in the step S5, the 3D printing wire shell mold is removed, and the casting sand mold with chill is obtained after treatment, which specifically comprises the following steps:
step S51, after solidification and molding of the chill, removing the 3D printing wire shell mold to obtain a casting model;
step S52, polishing and baking the molding surfaces of the mold cavities of the casting mold;
step S53, spraying alcohol-based paint on each die cavity of the baked casting model, and polishing the molding surfaces of each die cavity again after the alcohol-based paint is dried and fixed;
step S54, casting model mold assembling and combining to establish a casting system;
and step S55, filling back sand, and curing to obtain the casting sand mold with the chill.
The casting sand mold is prepared by the composite 3D printing preparation method of the casting sand mold with the chill.
The beneficial effects of the application are as follows:
the application provides a composite 3D printing preparation method of a casting sand mold with a chill and the casting sand mold, which aims to solve the problems of inconvenient installation and high cost of the chill in the existing 3D printing sand mold casting model in the prior art. The method comprises the following steps of S1, adopting a 3D printing process, and manufacturing a 3D printing sand mold according to a product drawing; s2, manufacturing a 3D printing wire shell according to the same product drawing by adopting a wire 3D printing process, wherein the 3D printing wire shell is matched with the 3D printing sand mould; s3, assembling the 3D printing sand mold and the 3D printing wire shell mold, wherein a gap between the 3D printing sand mold and the 3D printing wire shell mold forms a chill cavity; s4, adding a chromite sand mixture into the chill cavity, compacting and solidifying the chromite sand mixture to form a chill; and S5, removing the shell mold of the 3D printing wire rod, and processing to obtain the casting sand mold with the chill. According to the composite 3D printing preparation method of the casting sand mould with the chill, 3D printing of the sand mould and 3D printing of wires are ingeniously combined, the chill with any position and any shape can be arranged by utilizing the respective advantages of two advanced 3D printing additive manufacturing processes, the technical problem that the chill cannot be added by the 3D printing sand mould is thoroughly solved, and meanwhile, the high cost problem of molding the chill and the randomness problem of simple chill are solved. Meanwhile, the application utilizes the advantages of good chilling characteristic of chromite sand and arbitrary generated shape of the sand, and can be maximally close to the surface of the position of the casting to be chilled, thereby obtaining the best effect. The implementation of the application opens up a brand new path for wider application of the 3D printing sand mould.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a process flow diagram of a composite 3D printing preparation method of a foundry sand mold with chill in an embodiment.
Fig. 2 is a schematic diagram of the injection of chromite sand in the example.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application.
Embodiments of the application are described in detail below with reference to the accompanying drawings.
And the existing 3D printing sand mold is added with the chill, and the chill is required to be processed by profiles such as carbon steel, and the like, so that the cost is high and the period is long. Meanwhile, the chiller is also required to be embedded at a specific position, so that the operation is inconvenient, and the mounting cannot be realized due to the structural limitation.
In this embodiment, in order to solve the problems of inconvenient installation and high cost of chill in the existing 3D printing sand casting model in the prior art, a method for preparing a composite 3D printing sand casting mold with chill is provided, and the technological process is shown in fig. 1.
Specifically, the preparation method for the composite 3D printing of the casting sand mold with the chill comprises the following steps:
step S1, adopting a 3D printing process (PCM process) to manufacture a 3D printing sand mould according to a product drawing.
The method specifically comprises the following steps:
step S11, carrying out casting process analysis according to a product drawing, and determining a casting system and a chill structure;
step S12, carrying out three-dimensional drawing design according to casting process analysis, wherein a casting system and a chill structure are reflected in the three-dimensional drawing; the casting system comprises a pouring cup, a straight pouring gate, a cross pouring gate, an inner pouring gate and the like; the chiller structure includes the position, shape and size of the chiller;
step S13, carrying out three-dimensional modeling design according to a three-dimensional drawing, and reserving process feeding amount;
step S14, manufacturing a 3D printing sand mold on a sand mold 3D printer according to three-dimensional modeling;
and step S15, cleaning for standby after the 3D printing sand mold is manufactured.
For example, a mixture of silica sand, furan resin and silane is used as a printing material, wherein the particle size of the silica sand is 70-140 meshes, the amount of the furan resin is 3% of the weight of the silica sand, and the amount of the silane is 0.35% of the weight of the furan resin. And manufacturing a 3D printing sand mold by using a printing material on a 3D printer according to a product drawing, wherein the position, the shape and the size of the chill are required to be reflected by the 3D printing sand mold.
The die cavity inside the 3D printing sand mold is a casting molding area. The chill is required to be arranged in the die cavity, and is matched with the riser to feed the casting so as to directionally solidify the casting.
And S2, manufacturing a 3D printing wire shell according to the same product drawing in the step S1 by adopting a wire 3D printing process, wherein the 3D printing wire shell is matched with the 3D printing sand mould.
The method specifically comprises the following steps:
step 21, carrying out casting process analysis according to a product drawing, and determining a casting system and a chill structure, wherein the chill structure comprises the position, the shape and the size of a chill;
s22, carrying out three-dimensional drawing design on the appearance of the product according to casting process analysis;
s23, carrying out three-dimensional modeling design of the product appearance according to a three-dimensional drawing of the product appearance;
step S24, manufacturing a 3D printing wire shell type on a wire 3D printer according to three-dimensional modeling of the appearance of the product;
and S25, polishing the 3D printing wire shell by using 130-150-mesh sand paper, or spraying photosensitive resin on the surface of the 3D printing wire shell, and polishing by using sand paper after curing for later use.
Wire 3D printing is also called FDM (fused deposition modeling), and the wire made of PLA, ABS, PC, PP, nylon and other materials is used, and the diameter is generally phi 1.75mm and phi 3mm.
The 3D printing wire shell type is only provided with a product shell shape for placing a corresponding position of the chill, and the purpose of the 3D printing wire shell type is to be matched with a 3D printing sand mold to show a chill cavity.
And S3, assembling the 3D printing sand mold and the 3D printing wire shell mold, and forming a chill cavity in a gap between the two molds. When the wire shell is printed in 3D, the position of a sand adding hole is required to be reserved, and the sand adding hole is communicated with the chill cavity.
And S4, adding a chromite sand mixture into the chill cavity, compacting and solidifying the chromite sand mixture to form a chill, wherein the process is shown in figure 2.
The chromite sand mixture comprises chromite sand, thermosetting resin and curing agent, wherein the use amount of the thermosetting resin is 2-5% of the weight of the chromite sand, and the use amount of the curing agent is 0.3-0.5% of the weight of the thermosetting resin. The particle size of the chromite sand is 70-140 meshes. The thermosetting resin is phenolic resin, furan resin or modified phenolic resin. The curing agent is silane or sorbitol propionate.
For example, an amorphous chill was made with chromite sand, 3wt% furan resin, and 0.35wt% silane.
And S5, removing the shell mold of the 3D printing wire rod, and processing to obtain the casting sand mold with the chill.
The method specifically comprises the following steps:
step S51, after solidification and molding of the chill, removing the 3D printing wire shell mold to obtain a casting model;
step S52, polishing and baking the molding surfaces of the mold cavities of the casting mold;
step S53, spraying alcohol-based paint on each die cavity of the baked casting model, and polishing the molding surfaces of each die cavity again after the alcohol-based paint is dried and fixed;
step S54, casting model mold assembling and combining to establish a casting system;
and step S55, filling back sand, and curing to obtain the casting sand mold with the chill.
The preparation method of the casting model in the embodiment skillfully combines sand mould 3D printing and wire rod 3D printing, utilizes the respective advantages of two advanced 3D printing additive manufacturing processes, can arrange chill in any position and in any shape, thoroughly solves the technical problem that the chill cannot be added by the 3D printing sand mould, and simultaneously solves the high cost problem of molding the chill and the randomness problem of simple chill. Meanwhile, the application utilizes the advantages of good chilling characteristic of chromite sand and arbitrary generated shape of the sand, and can be maximally close to the surface of the position of the casting to be chilled, thereby obtaining the best effect. The implementation of the application opens up a brand new path for wider application of the 3D printing sand mould.
Claims (8)
1. The preparation method of the composite 3D printing of the casting sand mould with the chill is characterized by comprising the following steps of:
step S1, adopting a 3D printing process, and manufacturing a 3D printing sand mold according to a product drawing;
s2, manufacturing a 3D printing wire shell according to the same product drawing in the step S1 by adopting a wire 3D printing process, wherein the 3D printing wire shell is matched with the 3D printing sand mould;
s3, assembling the 3D printing sand mold and the 3D printing wire shell mold, wherein a gap between the 3D printing sand mold and the 3D printing wire shell mold forms a chill cavity;
s4, adding a chromite sand mixture into the chill cavity, compacting and solidifying the chromite sand mixture to form a chill;
s5, removing the shell mold of the 3D printing wire rod, and processing to obtain a casting sand mold with chill;
step S2, adopting a wire 3D printing process, manufacturing a 3D printing wire shell according to the same product drawing in step S1 specifically comprises the following steps:
step S21, carrying out casting process analysis according to the same product drawing, and determining a casting system and a chill structure, wherein the chill structure comprises the position, the shape and the size of a chill;
s22, carrying out three-dimensional drawing design on the appearance of the product according to casting process analysis;
s23, carrying out three-dimensional modeling design of the product appearance according to a three-dimensional drawing of the product appearance;
step S24, manufacturing a 3D printing wire shell type on a wire 3D printer according to three-dimensional modeling of the appearance of the product;
step S25, polishing the 3D printing wire shell by using 130-150 mesh sand paper, or spraying photosensitive resin on the surface of the 3D printing wire shell, and polishing by using sand paper after curing for later use;
the 3D printing sand mold comprises a 3D printing sand mold, a casting mold and a casting mold, wherein a mold cavity inside the 3D printing sand mold is a casting molding area; the chill is arranged in the die cavity, and is matched with the riser to feed the casting so as to directionally solidify the casting.
2. The method for preparing the composite 3D printing of the casting sand mold with the chill according to claim 1, wherein the step S1 of preparing the 3D printing sand mold according to the product drawing by adopting a 3D printing process specifically comprises the following steps:
step S11, carrying out casting process analysis according to a product drawing, and determining a casting system and a chill structure;
step S12, carrying out three-dimensional drawing design according to casting process analysis, wherein a casting system and a chill structure are reflected in the three-dimensional drawing, and the chill structure comprises the position, the shape and the size of a chill;
step S13, carrying out three-dimensional modeling design according to a three-dimensional drawing, and reserving process feeding amount;
step S14, manufacturing a 3D printing sand mold on a sand mold 3D printer according to three-dimensional modeling;
and step S15, cleaning for standby after the 3D printing sand mold is manufactured.
3. The method for preparing the composite 3D printing of the casting sand mold with the chill according to claim 1, wherein the chromite sand mixture comprises chromite sand, thermosetting resin and curing agent, the amount of the thermosetting resin is 2-5% of the weight of the chromite sand, and the amount of the curing agent is 0.3-0.5% of the weight of the thermosetting resin.
4. The method for preparing the composite 3D printing of the casting sand mold with the chill, which is characterized in that the particle size of the chromite sand is 70-140 meshes.
5. The method for preparing the composite 3D printing of the casting sand mold with the chill, according to claim 3, wherein the thermosetting resin is phenolic resin, furan resin or modified phenolic resin.
6. The method for preparing a composite 3D printing of a foundry sand mold with chill according to claim 3, wherein the curing agent is silane or sorbitol propionate.
7. The method for preparing a composite 3D printing of a foundry sand mold with chill according to any one of claims 1 to 6, wherein the step S5 of removing the shell mold of the 3D printing wire rod, the process to obtain the foundry sand mold with chill specifically comprises the following steps:
step S51, after solidification and molding of the chill, removing the 3D printing wire shell mold to obtain a casting model;
step S52, polishing and baking the molding surfaces of the mold cavities of the casting mold;
step S53, spraying alcohol-based paint on each die cavity of the baked casting model, and polishing the molding surfaces of each die cavity again after the alcohol-based paint is dried and fixed;
step S54, casting model mold assembling and combining to establish a casting system;
and step S55, filling back sand, and curing to obtain the casting sand mold with the chill.
8. The casting sand mold is characterized by being prepared by a composite 3D printing preparation method of the casting sand mold with the chill according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429721.0A CN114210944B (en) | 2021-11-29 | 2021-11-29 | Composite 3D printing preparation method of casting sand mold with chill and casting sand mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429721.0A CN114210944B (en) | 2021-11-29 | 2021-11-29 | Composite 3D printing preparation method of casting sand mold with chill and casting sand mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114210944A CN114210944A (en) | 2022-03-22 |
| CN114210944B true CN114210944B (en) | 2023-11-17 |
Family
ID=80698733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111429721.0A Active CN114210944B (en) | 2021-11-29 | 2021-11-29 | Composite 3D printing preparation method of casting sand mold with chill and casting sand mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114210944B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769547A (en) * | 2022-04-18 | 2022-07-22 | 共享装备股份有限公司 | Chilling block for 3D printing sand mold and using method thereof |
| CN114799054A (en) * | 2022-04-18 | 2022-07-29 | 共享装备股份有限公司 | Chilling block for 3D printing sand mold and using method thereof |
| CN114749625A (en) * | 2022-04-21 | 2022-07-15 | 重庆江增船舶重工有限公司 | 3D printing sand mold and molding method for bearing shell of supercharger |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308156A (en) * | 2014-11-13 | 2015-01-28 | 四川南车共享铸造有限公司 | Composition for three-dimensional print casting and applications thereof |
| CN105750494A (en) * | 2016-03-04 | 2016-07-13 | 清华大学 | Double-layer structure new casting mold |
| CN106890947A (en) * | 2015-12-17 | 2017-06-27 | 通用电气公司 | There is the method and component of the component for being limited to internal path therein for being formed |
| CN107774917A (en) * | 2017-10-23 | 2018-03-09 | 共享装备股份有限公司 | The fixing means of chill on the 3D printing core and 3D printing core of chill is set |
| CN107962165A (en) * | 2017-12-11 | 2018-04-27 | 云南昆船机械制造有限公司 | A kind of casting method of the molding assembly chill in 3D printing resin sand core |
| CN108421960A (en) * | 2018-03-19 | 2018-08-21 | 河北硕凯铸造有限公司 | One kind is with type chill and its preparation process |
| KR20190103526A (en) * | 2018-02-14 | 2019-09-05 | 삼영기계 (주) | Mold with heat insulation function |
| DE102018212007A1 (en) * | 2018-07-18 | 2020-01-23 | Volkswagen Aktiengesellschaft | Method and device for producing three-dimensional objects in 3D printing |
| CN112705674A (en) * | 2019-10-25 | 2021-04-27 | 江苏万恒铸业有限公司 | Simple method for arranging chilling blocks in 3DP printing sand mold |
| KR102300954B1 (en) * | 2020-03-26 | 2021-09-09 | 최성환 | A forming method for internal metal mold |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10391551B2 (en) * | 2017-02-06 | 2019-08-27 | Fisher Controls International Llc | Mold body with integrated chill |
| US10682688B2 (en) * | 2018-09-07 | 2020-06-16 | Cheng-Kuan Wu | Casting method of double thin shell mold craft |
| CN114769547A (en) * | 2022-04-18 | 2022-07-22 | 共享装备股份有限公司 | Chilling block for 3D printing sand mold and using method thereof |
-
2021
- 2021-11-29 CN CN202111429721.0A patent/CN114210944B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308156A (en) * | 2014-11-13 | 2015-01-28 | 四川南车共享铸造有限公司 | Composition for three-dimensional print casting and applications thereof |
| CN106890947A (en) * | 2015-12-17 | 2017-06-27 | 通用电气公司 | There is the method and component of the component for being limited to internal path therein for being formed |
| CN105750494A (en) * | 2016-03-04 | 2016-07-13 | 清华大学 | Double-layer structure new casting mold |
| CN107774917A (en) * | 2017-10-23 | 2018-03-09 | 共享装备股份有限公司 | The fixing means of chill on the 3D printing core and 3D printing core of chill is set |
| CN107962165A (en) * | 2017-12-11 | 2018-04-27 | 云南昆船机械制造有限公司 | A kind of casting method of the molding assembly chill in 3D printing resin sand core |
| KR20190103526A (en) * | 2018-02-14 | 2019-09-05 | 삼영기계 (주) | Mold with heat insulation function |
| CN108421960A (en) * | 2018-03-19 | 2018-08-21 | 河北硕凯铸造有限公司 | One kind is with type chill and its preparation process |
| DE102018212007A1 (en) * | 2018-07-18 | 2020-01-23 | Volkswagen Aktiengesellschaft | Method and device for producing three-dimensional objects in 3D printing |
| CN112705674A (en) * | 2019-10-25 | 2021-04-27 | 江苏万恒铸业有限公司 | Simple method for arranging chilling blocks in 3DP printing sand mold |
| KR102300954B1 (en) * | 2020-03-26 | 2021-09-09 | 최성환 | A forming method for internal metal mold |
Non-Patent Citations (1)
| Title |
|---|
| 基于3D打印的某型柴油机缸盖铸造成型工艺;付岳楼;郭敏;卫蓉;田永维;;中国铸造装备与技术(第05期);31-33 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114210944A (en) | 2022-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114210944B (en) | Composite 3D printing preparation method of casting sand mold with chill and casting sand mold | |
| CN102166639B (en) | Integral precision casting method for large complicated thin-walled aluminum alloy cabin components | |
| CN107716855B (en) | Forming method for sand mold self-adaptive gradient printing | |
| CN108672655B (en) | Composite casting method with controllable casting mold temperature | |
| WO2011017864A1 (en) | Adaptive production method for mould | |
| CN102921902A (en) | Composite shaping technique method of iron pattern coated sand and iron type core assembly | |
| CN107096882B (en) | Casting mold based on 3D printing and preparation method of casting mold | |
| CN108296441A (en) | A kind of hot core box mould and sand core forming method extending film covered sand core exhaust passage | |
| CN103506573A (en) | Casting method for complex sand core integrating | |
| CN101486074A (en) | Disappearance core production method | |
| CN108213342A (en) | The casting technique of the complicated smallclothes of batch production | |
| US20150000855A1 (en) | Holder block system and methods for metal casting | |
| CN102248150B (en) | Forming process for embedding aluminum die-casting die into sand-core die | |
| CN111215578A (en) | Casting mold preparation method based on shell mold additive and residual area filling | |
| CN104889336A (en) | V-process cast sand core and preparing method thereof | |
| CN214442831U (en) | Mould-free casting mould | |
| CN101733362A (en) | Method for casting metallic mold | |
| Morvan et al. | ProMetal RCT (TM) process for fabrication of complex sand molds and sand cores | |
| CN212371113U (en) | Novel sand core easy to crush, less in sand adhesion and good in casting performance | |
| CN113042685A (en) | 3DP sand mold casting process suitable for ZL205A aluminum alloy complex thin-wall component | |
| CN219357840U (en) | Three-dimensional printing shell pressing sand mould | |
| CN113561295B (en) | Preparation method of lost mold core, lost mold and application | |
| US8448691B1 (en) | Bearing housing molding apparatus and method | |
| CN204817930U (en) | Car cylinder body core | |
| CN104259396A (en) | Manufacturing method for corbel |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |