CN112756556B - Bottom pouring type pouring system and preparation process - Google Patents
Bottom pouring type pouring system and preparation process Download PDFInfo
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- CN112756556B CN112756556B CN202011535852.2A CN202011535852A CN112756556B CN 112756556 B CN112756556 B CN 112756556B CN 202011535852 A CN202011535852 A CN 202011535852A CN 112756556 B CN112756556 B CN 112756556B
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- filter screen
- screen seat
- seat
- plug
- shell
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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 molded shell, wherein the upper end of the molded shell is connected with a riser, the lower end of the molded shell is connected with a cross runner, the end part of the cross runner is connected with a filter screen seat, the filter screen seat is connected with a straight runner, the filter screen seat is in a hollow open shape, a filter screen is inserted into the filter screen seat, the upper side of one side of the filter screen seat, which is close to the straight runner, is connected with a slag ladle, and the open part of the filter screen seat is inserted with a screen seat plug; removing refractory materials on the side surface of the filter screen seat, and coating internal fire materials 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, dried in the air and stored; according to the invention, the slag collecting bag is arranged on one side of the filter screen seat, slag is floated and collected in the slag collecting bag before molten steel flows through the filter screen, fine slag which is not collected is filtered through the filter screen, so that the purity of molten steel entering the casting part is ensured, the casting quality 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.
Background
When the technology is applied, when molten steel and slag in the molten steel flow through the filter screen, large slag inclusion is very easy to paste meshes of the filter screen, and residual molten steel is difficult to smoothly flow through the filter screen, so that casting is insufficient and cold-rolled, and defect rejection rate is very 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, slag is floated and collected in the slag collecting bag before molten steel flows through the filter screen, fine slag which is not collected is filtered by the filter screen, so that the purity of molten steel entering a casting part is ensured, the casting quality is greatly improved, the rejection rate is reduced, and the problems in the background art can be effectively solved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the bottom pouring type pouring system comprises a mold shell, wherein a riser is connected to the upper end of the mold shell, a cross runner is connected to the lower end of the mold 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 ladle is connected to the upper side of one side, close to the sprue, of the filter screen seat, and a screen seat plug is inserted into the open part of the filter screen seat.
Preferably, the opening of the filter screen seat is arranged on the side surface.
Preferably, the screen seat plug is in a prismatic table shape, and a small opening is formed at a position close to the opening of the filter screen seat.
Preferably, the shell, the riser, the cross runner, the filter screen seat, the sprue and the slag ladle are integrally arranged, and the screen seat plug and the filter screen seat are arranged in a separated mode.
Preferably, the lower end of one side of the slag collecting bag, which is close to the filter screen seat, is provided with an opening and is 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, the upper end and the lower end of a casting wax pattern are respectively connected with a riser wax pattern and a cross runner wax pattern tree, one end of a filter screen seat wax pattern is connected with the port of the cross runner wax pattern by adopting hot melt adhesive, and a slag ladle wax pattern is adhered to the other side edge of the filter screen seat wax pattern by adopting hot melt adhesive to form an integral module;
step two, manufacturing the shell of the integral module in the step one, wiping out each layer of refractory material on the side end surface of the filter screen seat during the shell manufacturing, and smearing the refractory material on the inner cavity of the filter screen seat plug wax mould, which is close to the filter screen seat;
step three, roasting and dewaxing the integral module in the step two to enable the filter screen seat to form a cavity shell with an opening;
step four, cooling the integral module dewaxed in the step three to room temperature, inserting a filter screen on the filter screen seat before pouring, and inserting a screen seat plug into an opening of the filter screen seat;
and fifthly, airing and drying the integral structure in the step four, storing and casting for later use.
Preferably, the shell making process in the second step adopts mullite powder and silica sol with the proportion of 1:4 to prepare slurry, the surface of the integral model is stuck with slurry, mullite sand is scattered on the surface of the integral model stuck with the slurry, mortar materials on the end face of a filter screen seat are wiped off after the mullite sand is scattered, the integral model stuck with the slurry and scattered is placed in front of a fan with the air speed of 1-3m/s for air drying, the next layer is made after the drying, and the processes are repeated for 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 screen seat plug is rapidly inserted into the opening of the screen seat and is pressed.
In the concrete implementation, molten steel is poured from the inlet of the sprue, slag in the molten steel is gathered on the slag collecting ladle, the molten steel passes through the filter screen, high-quality pure molten steel enters the casting body, and the filter screen cannot be stuck by the slag to form defects of insufficient cast-in-situ and cold insulation.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the slag collecting bag is arranged on one side of the filter screen seat, slag is floated and collected in the slag collecting bag before molten steel flows through the filter screen, fine slag which is not collected is filtered through the filter screen, so that the purity of molten steel entering the casting part is ensured, the casting quality is greatly improved, and the rejection rate is reduced.
Drawings
FIG. 1 is a schematic diagram of a casting system according to the present invention;
fig. 2 is a schematic diagram of connection between a filter screen seat and a plug of the filter screen seat.
In the figure: 1. a sprue; 2. slag collecting bags; 3. a filter screen; 4. a filter screen seat; 5. a cross gate; 6. a shell; 7. riser; 8. a net seat plug.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-2, the bottom pouring type pouring system comprises a molded shell 6, wherein a riser 7 is connected to the upper end of the molded shell 6, a cross runner 5 is connected to the lower end of the molded shell 6, a filter screen seat 4 is connected to the end part of the cross runner 5, the filter screen seat 4 is connected with 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 ladle 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 open part of the filter screen seat 4.
In this embodiment, the opening of the filter screen seat 4 is disposed on the side surface.
In this embodiment, the screen seat plug 8 is in a prismatic table shape and is small at a position close to the opening of the filter screen seat 4.
In this embodiment, the shell 6, riser 7, runner 5, filter screen seat 4, sprue 1 and 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 ladle 2 near the filter screen seat 4 is opened 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, the upper end and the lower end of a casting wax pattern are respectively connected with a riser wax pattern and a cross runner wax pattern tree, one end of a filter screen seat wax pattern is connected with the port of the cross runner wax pattern by adopting hot melt adhesive, and a slag ladle wax pattern is adhered to the other side edge of the filter screen seat wax pattern by adopting hot melt adhesive to form an integral module;
step two, manufacturing the shell of the integral module in the step one, wiping out each layer of refractory material on the side end surface of the filter screen seat during the shell manufacturing, and smearing the refractory material on the inner cavity of the filter screen seat plug wax mould, which is close to the filter screen seat;
step three, roasting and dewaxing the integral module in the step two to enable the filter screen seat to form a cavity shell with an opening;
step four, cooling the integral module dewaxed in the step three to room temperature, inserting a filter screen on the filter screen seat before pouring, and inserting a screen seat plug into an opening of the filter screen seat;
and fifthly, airing and drying the integral structure in the step four, storing and casting for later use.
In the embodiment, the shell making process in the second step is to prepare slurry by adopting mullite powder and silica sol in a ratio of 1:4, adhering slurry to the surface of the integral model, scattering mullite sand on the surface of the integral model adhered with the slurry, wiping off mortar on the end face of the filter screen seat after the sand scattering, placing the integral model adhered with the slurry and the sand scattering in front of a fan with the air speed of 1-3m/s for air drying, then making the next layer, and repeating the processes to make 5-7 layers.
In this embodiment, in the fourth step, a layer of adhesive is coated on the peripheral mating surface of the plug of the filter screen seat, and then the adhesive is quickly inserted into the opening of the filter screen seat and is pressed.
When the casting is performed, molten steel is poured from the inlet of the sprue, slag in the molten steel is gathered on the slag collecting ladle, the molten steel passes through the filter screen, high-quality pure molten steel enters the casting body, and the filter screen cannot be stuck by the slag to form defects of insufficient cast-in-situ and cold insulation.
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 modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (3)
1. The preparation technology of the bottom pouring type pouring system comprises a mold shell, wherein the upper end of the mold shell is connected with a riser, and the preparation technology is characterized in that: the lower end of the molded shell is connected with the cross gate, the end part of the cross gate is connected with the filter screen seat, the filter screen seat is in a hollow open shape, the open mouth of the filter screen seat is arranged on the side face, the filter screen seat is inserted and filtered with a filter screen, the upper side of one side of the filter screen seat, which is close to the cross gate, is connected with a slag ladle, the lower end of one side of the slag ladle, which is close to the filter screen seat, is in an open shape and is communicated with the filter screen seat, the open mouth of the filter screen seat is inserted with a screen seat plug, the screen seat plug is in a prismatic table shape and is in a small mouth, the molded shell, the riser, the cross gate, the filter screen seat, the cross gate and the slag ladle are integrally arranged, and the screen seat plug and the filter screen seat are separately arranged;
the preparation process comprises the following steps:
step one, the upper end and the lower end of a casting wax pattern are respectively connected with a riser wax pattern and a cross runner wax pattern tree, one end of a filter screen seat wax pattern is connected with the port of the cross runner wax pattern by adopting hot melt adhesive, and a slag ladle wax pattern is adhered to the other side edge of the filter screen seat wax pattern by adopting hot melt adhesive to form an integral module;
step two, manufacturing the shell of the integral module in the step one, wiping out each layer of refractory material on the side end surface of the filter screen seat during the shell manufacturing, and smearing refractory material on one side of the wax mould of the filter screen seat plug, which is close to the inner cavity of the filter screen seat;
step three, roasting and dewaxing the integral module in the step two to enable the filter screen seat to form a cavity shell with an opening;
step four, cooling the integral module dewaxed in the step three to room temperature, inserting a filter screen on the filter screen seat before pouring, and inserting a screen seat plug into an opening of the filter screen seat;
and fifthly, airing and drying the integral structure in the step four, storing and casting for later use.
2. The process for preparing a bottom pouring system according to claim 1, wherein: preparing a slurry from mullite powder and silica sol in a ratio of 1:4, adhering the slurry to the surface of an integral model, scattering mullite sand on the surface of the integral model adhered with the slurry, wiping off mortar on the end face of a filter screen seat after the sand scattering, then placing the integral model adhered with the slurry and the sand scattering in front of a fan with the air speed of 1-3m/s for air drying, then making the next layer, and repeating the steps to make 5-7 layers.
3. The process for preparing a bottom pouring system according to claim 1, 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 screen seat plug is rapidly inserted into the opening of the screen seat and is pressed.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN112756556A CN112756556A (en) | 2021-05-07 |
| CN112756556B true CN112756556B (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011535852.2A Active CN112756556B (en) | 2020-12-23 | 2020-12-23 | Bottom pouring type pouring system and preparation process |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
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 |
-
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 |
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| CN112756556A (en) | 2021-05-07 |
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