CN112756556A - Bottom pouring type pouring system and preparation process - Google Patents
Bottom pouring type pouring system and preparation process Download PDFInfo
- Publication number
- CN112756556A CN112756556A CN202011535852.2A CN202011535852A CN112756556A CN 112756556 A CN112756556 A CN 112756556A CN 202011535852 A CN202011535852 A CN 202011535852A CN 112756556 A CN112756556 A CN 112756556A
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- filter screen
- screen seat
- seat
- shell
- opening
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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
- B22C9/082—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
- B22C9/02—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
- B22C9/086—Filters
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- 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
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a bottom pouring type pouring system, which comprises a shell, wherein the upper end of the shell is connected with a riser, the lower end of the shell is connected with a cross gate, the end part of the cross gate is connected with a filter screen seat, the filter screen seat is connected with a sprue, the filter screen seat is hollow and open, a filter screen is inserted in the filter screen seat, the upper side of one side, close to the sprue, of the filter screen seat is connected with a slag collecting bag, and the open part of the filter screen seat is inserted with a screen seat plug; removing the refractory material on the side surface of the filter screen seat, and smearing the internal fire material on the surface of the wax mould of the screen seat plug; roasting and dewaxing; the filter screen seat is inserted with a filter screen, and the filter screen is dried and stored; according to the invention, the slag collecting bag is arranged on one side of the filter screen seat, the slag is floated and collected in the slag collecting bag before the molten steel flows through the filter screen, and the non-collected fine slag is filtered by the filter screen, so that the purity of the molten steel entering a casting part is ensured, the quality of the casting is greatly improved, and the rejection rate is reduced.
Description
Technical Field
The invention relates to the technical field of precision casting, in particular to a bottom pouring type pouring system and a preparation process thereof.
Background
The existing precision casting bottom pouring type pouring system adopts a vertical filter screen, two sides of a filter screen seat are directly connected with a cross gate, when the process is applied, molten steel and slag in the molten steel flow through the filter screen, meshes of the filter screen are easily stuck by large slag inclusion, and the rest molten steel is difficult to flow through the filter screen smoothly, so that casting pouring is insufficient, cold shut is caused, and the defect rejection rate is high.
Disclosure of Invention
The invention mainly aims to provide a bottom pouring type pouring system and a preparation process, wherein a slag collecting bag is arranged on one side of a filter screen seat, molten steel floats upwards to be collected in the slag collecting bag before flowing through a filter screen, and non-collected fine slag is filtered through the filter screen, so that the purity of the molten steel entering a casting part is ensured, the quality of the casting is greatly improved, the rejection rate is reduced, and the problems in the background technology can be effectively solved.
In order to achieve the purpose, the invention adopts the technical scheme that: the bottom pouring type pouring system comprises a shell, a riser is connected to the upper end of the shell, a cross runner is connected to the lower end of the shell, a filter screen seat is connected to the end portion of the cross runner, the filter screen seat is connected with a sprue, the filter screen seat is hollow and open, a filter screen is inserted into the filter screen seat, a slag collecting bag is connected to the upper side of one side, close to the sprue, of the filter screen seat, and a plug screen seat plug is inserted into the open of the filter screen seat.
Preferably, the opening of the filter screen seat is arranged on the side surface.
Preferably, the net seat plug is in a prismatic table shape and is provided with a small opening close to the opening of the filter net seat.
Preferably, the shell, the riser, the cross gate, the filter screen seat, the sprue and the slag collecting ladle are integrally arranged, and the screen seat plug is separated from the filter screen seat.
Preferably, the lower end of one side of the slag collecting bag close to the filter screen seat is open and communicated with the filter screen seat.
The preparation process of the bottom pouring type pouring system comprises the following steps: the method comprises the following steps:
step one, respectively connecting the upper end and the lower end of a casting wax mold with a riser wax mold and a cross gate wax mold group tree, adhering one end of a filter screen seat wax mold with a port of the cross gate wax mold by using a hot melt adhesive, and adhering a slag-collecting wax-covering mold to the other side edge of the filter screen seat wax mold by using the hot melt adhesive to form an integral module;
step two, manufacturing a shell of the integral module in the step one, wiping off each layer of refractory material on the side end face of the filter screen seat during shell manufacturing, and smearing the refractory material on an inner cavity of the filter screen seat close to the wax mould of the screen seat plug;
step three, roasting and dewaxing the integral module in the step two to enable the filter screen seat to form a cavity type shell with an opening;
step four, cooling the integral module subjected to dewaxing in the step three to room temperature, inserting a filter screen on the filter screen seat before casting, and inserting a screen seat plug into an opening of the filter screen seat;
and step five, airing, drying, storing and pouring the integral structure in the step four for later use.
Preferably, in the shell making process in the second step, mullite powder and silica sol in a ratio of 1:4 are prepared into slurry, the surface of the integral model is adhered with the slurry, mullite sand is scattered on the surface of the integral module adhered with the slurry, the sand slurry on the end face of the filter screen seat is removed after the sand is scattered, the integral module adhered with the slurry and scattered with the sand is placed in front of a fan with the wind speed of 1-3m/s for air drying, the next layer is made after the drying, and the processes are repeated to make 5-7 layers.
Preferably, in the fourth step, a layer of adhesive is coated on the peripheral matching surface of the screen seat plug, and then the adhesive is rapidly inserted into the opening of the filter screen seat and is pressed tightly.
During specific implementation, molten steel is poured from an inlet of the sprue, dross in the molten steel is gathered on the dross collecting bag, the molten steel enters the casting body through the filter screen to be high-quality and pure molten steel, and the filter screen cannot be pasted by the dross to cause insufficient pouring and cold insulation defects.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the slag collecting bag is arranged on one side of the filter screen seat, the slag is floated and collected in the slag collecting bag before the molten steel flows through the filter screen, and the non-collected fine slag is filtered by the filter screen, so that the purity of the molten steel entering a casting part is ensured, the quality of the casting is greatly improved, and the rejection rate is reduced.
Drawings
FIG. 1 is a schematic view of the gating system of the present invention;
fig. 2 is a schematic view of the connection between the filter screen seat and the screen seat plug of the present invention.
In the figure: 1. a sprue; 2. collecting a slag ladle; 3. a filter screen; 4. a filter screen seat; 5. a cross gate; 6. molding a shell; 7. a riser; 8. the net seat is plugged.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-2, the bottom pouring type gating system comprises a shell 6, a riser 7 is connected to the upper end of the shell 6, a horizontal runner 5 is connected to the lower end of the shell 6, a filter screen seat 4 is connected to the end of the horizontal runner 5, the filter screen seat 4 is connected to a sprue 1, the filter screen seat 4 is hollow and open, a filter screen 3 is inserted into the filter screen seat 4, a slag collecting bag 2 is connected to the upper side of one side of the filter screen seat 4, which is close to the sprue 1, and a screen seat plug 8 is inserted into the opening of the filter screen seat 4.
In this embodiment, the opening of the filter screen holder 4 is provided on the side surface.
In this embodiment, the screen holder plug 8 is in a shape of a truncated pyramid and is a small opening near the opening of the filter screen holder 4.
In this embodiment, the shell 6, the riser 7, the horizontal runner 5, the filter screen seat 4, the sprue 1 and the slag ladle 2 are integrally arranged, and the screen seat plug 8 is separately arranged from the filter screen seat 4.
In this embodiment, the lower end of the slag collecting bag 2 near the filter screen seat 4 is open and is communicated with the filter screen seat 4.
The preparation process of the bottom pouring type pouring system comprises the following steps: the method comprises the following steps:
step one, respectively connecting the upper end and the lower end of a casting wax mold with a riser wax mold and a cross gate wax mold group tree, adhering one end of a filter screen seat wax mold with a port of the cross gate wax mold by using a hot melt adhesive, and adhering a slag-collecting wax-covering mold to the other side edge of the filter screen seat wax mold by using the hot melt adhesive to form an integral module;
step two, manufacturing a shell of the integral module in the step one, wiping off each layer of refractory material on the side end face of the filter screen seat during shell manufacturing, and smearing the refractory material on an inner cavity of the filter screen seat close to the wax mould of the screen seat plug;
step three, roasting and dewaxing the integral module in the step two to enable the filter screen seat to form a cavity type shell with an opening;
step four, cooling the integral module subjected to dewaxing in the step three to room temperature, inserting a filter screen on the filter screen seat before casting, and inserting a screen seat plug into an opening of the filter screen seat;
and step five, airing, drying, storing and pouring the integral structure in the step four for later use.
In the second step, the shell making process is to prepare a slurry by using mullite powder and silica sol in a ratio of 1:4, stick the slurry on the surface of the integral model, scatter mullite sand on the surface of the integral module stuck with the slurry, remove the sand slurry on the end face of the filter screen seat after scattering the sand, put the integral module stuck with the sand on a fan with a wind speed of 1-3m/s for air drying, make the next layer after drying, and repeat the above processes to make 5-7 layers.
In the fourth step, a layer of adhesive is coated on the peripheral matching surfaces of the plug of the filter screen seat, and then the adhesive is rapidly inserted into the opening of the filter screen seat and is pressed tightly.
During concrete pouring, molten steel is poured from an inlet of the sprue, dross in the molten steel is gathered on the dross collecting bag, the molten steel enters the casting body through the filter screen to be high-quality and pure molten steel, and the filter screen cannot be pasted by the dross to cause insufficient pouring and cold insulation defects.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. The bottom pouring type pouring system comprises a shell, wherein a riser is connected to the upper end of the shell, and the bottom pouring type pouring system is characterized in that: the lower extreme of shell is connected the cross gate, the end connection filter screen seat of cross gate, the filter screen seat is connected with the sprue, the filter screen seat is the hollow open form, peg graft the filter screen in the filter screen seat, the filter screen seat is close to one side upside connection collection cinder ladle of sprue, the open mouth department of filter screen seat pegs graft the screen seat end cap.
2. The bottom gating system of claim 1, wherein: the opening of the filter screen seat is arranged on the side surface.
3. The bottom gating system of claim 1, wherein: the net seat plug is in a prismatic table shape and is provided with a small opening close to the opening of the filter screen seat.
4. The bottom gating system of claim 1, wherein: the casting shell, the riser, the cross gate, the filter screen seat, the sprue and the slag ladle are arranged integrally, and the screen seat plug and the filter screen seat are arranged in a separated mode.
5. The bottom gating system of claim 1, wherein: the lower end of one side of the slag collecting bag close to the filter screen seat is arranged into an opening shape and is communicated with the filter screen seat.
6. A preparation process of the bottom pouring type gating system according to any one of claims 1 to 5, wherein the preparation process comprises the following steps: comprises the following steps of (a) carrying out,
step one, respectively connecting the upper end and the lower end of a casting wax mold with a riser wax mold and a cross gate wax mold group tree, adhering one end of a filter screen seat wax mold with a port of the cross gate wax mold by using a hot melt adhesive, and adhering a slag-collecting wax-covering mold to the other side edge of the filter screen seat wax mold by using the hot melt adhesive to form an integral module;
step two, manufacturing a shell of the integral module in the step one, wiping off each layer of refractory material on the side end face of the filter screen seat during shell manufacturing, and smearing the refractory material on an inner cavity of the filter screen seat close to the wax mould of the screen seat plug;
step three, roasting and dewaxing the integral module in the step two to enable the filter screen seat to form a cavity type shell with an opening;
step four, cooling the integral module subjected to dewaxing in the step three to room temperature, inserting a filter screen on the filter screen seat before casting, and inserting a screen seat plug into an opening of the filter screen seat;
and step five, airing, drying, storing and pouring the integral structure in the step four for later use.
7. The bottom gating system of claim 6, wherein: and in the second step, the shell manufacturing procedure is to prepare slurry by adopting mullite powder and silica sol in a ratio of 1:4, stick the slurry on the surface of the integral model, scatter mullite sand on the surface of the integral module stuck with the slurry, remove the sand slurry on the end surface of the filter screen seat after sanding, put the integral module stuck with the slurry and scattered with sand in a fan with a wind speed of 1-3m/s for air drying, make the next layer after drying, and repeat the procedures to make 5-7 layers.
8. The bottom gating system of claim 6, wherein: and in the fourth step, a layer of adhesive is coated on the peripheral matching surface of the screen seat plug, and then the adhesive is rapidly inserted into the opening of the filter screen seat and is pressed tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011535852.2A CN112756556B (en) | 2020-12-23 | 2020-12-23 | Bottom pouring type pouring system and preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011535852.2A CN112756556B (en) | 2020-12-23 | 2020-12-23 | Bottom pouring type pouring system and preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112756556A true CN112756556A (en) | 2021-05-07 |
| CN112756556B CN112756556B (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011535852.2A Active CN112756556B (en) | 2020-12-23 | 2020-12-23 | Bottom pouring type pouring system and preparation process |
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| Country | Link |
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| CN (1) | CN112756556B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114130954A (en) * | 2021-12-06 | 2022-03-04 | 山西柴油机工业有限责任公司 | Pouring system with slag collecting function and slag collecting method |
| CN114210926A (en) * | 2021-12-15 | 2022-03-22 | 中国航发动力股份有限公司 | Turbine blade investment casting shell and casting process thereof |
| CN114273610A (en) * | 2021-12-01 | 2022-04-05 | 东方电气集团东方汽轮机有限公司 | Shell for investment casting of directional crystallization blade and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103894550A (en) * | 2014-02-21 | 2014-07-02 | 杭州元鼎船舶设备有限公司 | Integrated copper alloy propeller hub casting equipment and special method thereof |
| CN204975210U (en) * | 2015-08-05 | 2016-01-20 | 十堰飞远汽车零部件有限公司 | Disappearance mould filters casting device |
| CN206561093U (en) * | 2017-03-15 | 2017-10-17 | 江苏钜源机械有限公司 | Collection slag and the integral structure of filtering in being produced for mining machinery evaporative pattern |
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2020
- 2020-12-23 CN CN202011535852.2A patent/CN112756556B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894550A (en) * | 2014-02-21 | 2014-07-02 | 杭州元鼎船舶设备有限公司 | Integrated copper alloy propeller hub casting equipment and special method thereof |
| CN204975210U (en) * | 2015-08-05 | 2016-01-20 | 十堰飞远汽车零部件有限公司 | Disappearance mould filters casting device |
| CN206561093U (en) * | 2017-03-15 | 2017-10-17 | 江苏钜源机械有限公司 | Collection slag and the integral structure of filtering in being produced for mining machinery evaporative pattern |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114273610A (en) * | 2021-12-01 | 2022-04-05 | 东方电气集团东方汽轮机有限公司 | Shell for investment casting of directional crystallization blade and preparation method |
| CN114273610B (en) * | 2021-12-01 | 2024-06-25 | 东方电气集团东方汽轮机有限公司 | Shell for oriented crystallization blade investment casting and preparation method thereof |
| CN114130954A (en) * | 2021-12-06 | 2022-03-04 | 山西柴油机工业有限责任公司 | Pouring system with slag collecting function and slag collecting method |
| CN114130954B (en) * | 2021-12-06 | 2024-01-12 | 山西柴油机工业有限责任公司 | Pouring system with slag collecting function and slag collecting method |
| CN114210926A (en) * | 2021-12-15 | 2022-03-22 | 中国航发动力股份有限公司 | Turbine blade investment casting shell and casting process thereof |
| CN114210926B (en) * | 2021-12-15 | 2023-09-22 | 中国航发动力股份有限公司 | Turbine blade investment casting shell and casting process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112756556B (en) | 2023-05-26 |
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