CN201815626U - Bottom pouring gating system with annular cross-sectioned ingate - Google Patents
Bottom pouring gating system with annular cross-sectioned ingate Download PDFInfo
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- CN201815626U CN201815626U CN2010205309536U CN201020530953U CN201815626U CN 201815626 U CN201815626 U CN 201815626U CN 2010205309536 U CN2010205309536 U CN 2010205309536U CN 201020530953 U CN201020530953 U CN 201020530953U CN 201815626 U CN201815626 U CN 201815626U
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Abstract
The utility model discloses a bottom pouring gating system with an annular cross-sectioned ingate and belongs to the field of casting technique. The conventional gating system is not suitable for pouring large casts, liable to generate stress, and easy to loosen, and has high rejection rate of casts. The bottom pouring gating system comprises a die cavity, as well as a main sprue, runners, branch sprues and branch runners, which are sequentially connected; and the bottom pouring gating system is characterized in that the branch runners are connected to the bottom part of the die cavity through the annular cross-sectioned ingate. By adopting the annular cross-sectioned ingate, both the volume of a sandbox and the sand consumption are reduced, therefore the production cost is greatly reduced; molten metal can smoothly flow into the die cavity, oxidizing slag generated during the turbulent flow of the molten metal can be prevented from being drawn into the die cavity, and the slag inclusion of a cast can be avoided, therefore the quality of the cast can be improved; as molten iron flows into the die cavity through the annular cross-sectioned ingate, the temperature difference is not easy to cause, the partial loosening is reduced, and the quality of the cast is ensured; and the bottom pouring gating system is convenient to operate.
Description
Technical field
The utility model belongs to casting technology field, specifically is the bottom gating of annular cross section ingate.
Background technology
The speed that prior art control molten metal flows into die cavity generally is by a kind of the carrying out in the following running gate system: a kind of is the flat trapezoidal ingate that the connection die cavity of multiple tracks dispersion is set in bottom transverse running channel one side, and another kind is the porcelain tube ingate that the connection die cavity of multiple tracks dispersion is set at bottom transverse running channel downside.
Aforementioned two kinds of running gate systems, first kind of requirement that can't reach big flow, low flow velocity, be unsuitable for casting large-size castings, especially, molten metal makes foundry goods at the position of corresponding ingate temperature height when flowing into die cavity by this place, position temperature away from ingate is low, has promptly produced temperature difference, easily makes foundry goods produce stress and loose; Though a kind of way that strengthens the porcelain tube internal diameter that can adopt in back reaches the purpose that macropore goes out stream, but troublesome poeration, in operating process, the porcelain tube moisture-sensitive is when treating that high temperature liquid iron is flowed through porcelain tube, produce explosion, the porcelain tube fragment is easily poured die cavity, causes foundry goods to scrap, so the percent defective height, and the mold thickness increase, increased placer iron ratio, molding sand consumption and production cost.
The utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome existing running gate system easily to make foundry goods generation stress and loosen, cause the high defective of casting wasted product rate, and a kind of bottom gating of annular cross section ingate is provided.
The technical problem that the utility model proposes for solution, the technical scheme that the bottom gating of the utility model annular cross section ingate adopts is: it comprises die cavity and the total sprue that links to each other successively, cross gate, branch sprue, branch cross gate, it is characterized in that described minute cross gate is connected to the bottom of described die cavity through the annular cross section ingate.
As the optimization technique measure, described die cavity is formed on molding sand and places between the last loam core of molding sand, the following loam core.Especially described annular cross section ingate is formed on surrounding of described loam core down on every side and by molding sand, concrete, big up and small down round table-like in described down loam core, the upper end diameter of described annular cross section ingate is big than lower end diameter, and the width unanimity of described annular cross section ingate.
As the optimization technique measure, the described lower end in loam core down has a planar annular and be formed with the protuberance that is used to place on the described molding sand in the middle of this planar annular, described minute cross gate is to offer translot and be communicated with the annular groove of described translot and cover described translot and annular groove forms by described planar annular on described molding sand, described translot is in abutting connection with a minute sprue, and described annular groove is in abutting connection with the annular cross section ingate.
As the optimization technique measure, described cross gate comprises first cross gate, second cross gate, the 3rd cross gate, described first cross gate is in abutting connection with total sprue, described the 3rd cross gate is in abutting connection with a minute sprue, described second cross gate is communicated with first cross gate and the 3rd cross gate, described first cross gate, second cross gate are positioned at sustained height, and described the 3rd cross gate is at the downside of described second cross gate and put filter between the 3rd cross gate and second cross gate.
As the optimization technique measure, the width of described second cross gate, the 3rd cross gate is wide than first cross gate.
As the optimization technique measure, the upper surface of corresponding described filter is provided with die joint.
As the optimization technique measure, the maximum total sectional area of described annular cross section ingate is 2～4 times of total sprue sectional area.
As the optimization technique measure, the bottom of described die cavity is continuous space.
The bottom gating of annular cross section ingate of the present utility model adopts the annular cross section ingate can reduce the sandbox volume, reduces the molding sand consumption, thereby reduces production costs greatly; Can make molten metal flow into die cavity stably, the oxidizing slag that is produced when preventing owing to the molten metal turbulent flow effectively is involved in die cavity, prevents that the slag inclusion of foundry goods from producing, thereby improves casting quality; Because molten iron enters die cavity by the annular cross section ingate, be difficult for producing temperature difference, reduce local loose generation, guaranteed casting quality; Easy to operate.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model.
Fig. 2 is the A portion enlarged drawing among Fig. 1.
Fig. 3 is the vertical view of cross gate among Fig. 1.
Fig. 4 is the upward view that divides cross gate among Fig. 1.
The number in the figure explanation: the 1-die cavity, the total sprue of 2-, the 3-cross gate, 4-divides sprue, 5-divides cross gate, 6-annular cross section ingate, 7-molding sand, the last loam core of 8-, loam core under the 9-, 10-planar annular, 11-protuberance, the 12-translot, 13-annular groove, 14-first cross gate, 15-second cross gate, 16-the 3rd cross gate, 17-filter, the 18-die joint, 19-mo(u)ld top half, 20-mo(u)ld bottom half.
The specific embodiment
The utility model is described further by a preferred embodiment below in conjunction with Figure of description.
The bottom gating of annular cross section ingate of the present utility model, as shown in Figure 1, it comprises die cavity 1 and the total sprue 2 that links to each other successively, cross gate 3, branch sprue 4, branch cross gate 5, divides cross gate 5 to be connected to the bottom of die cavity 1 through annular cross section ingate 6.
For the ease of making casting mold, die cavity 1 is formed on molding sand 7 and places between the last loam core 8 of molding sand 7, the following loam core 9, concrete, annular cross section ingate 6 is formed on down surrounding of loam core 9 on every side and by molding sand 7, especially descend big up and small down round table-like in loam core 9, the upper end diameter of annular cross section ingate 6 is big than lower end diameter, and the width unanimity of annular cross section ingate 6 (width of annular cross section ingate 6 is meant down the side in loam core 9 and the gap between the molding sand on every side).The time molten metal is slowed down in the annular cross section ingate and, form stay-in-grade foundry goods in cast thus with bigger flow inflow die cavity.
Further, for the ease of the branch cross gate is set, the lower end in following loam core 9 has a planar annular 10 and be formed for placing protuberances 11 on the molding sand in the middle of this planar annular 10, dividing cross gate 5 is to offer the annular groove 13 of translot 12 and connection translot 12 and form (referring to Fig. 2, Fig. 4) by planar annular 10 covering translots 12 and annular groove 13 on molding sand 7, translot 12 is in abutting connection with dividing sprue 4, and annular groove 13 is in abutting connection with annular cross section ingate 6.
In addition, cross gate 3 comprises first cross gate 14, second cross gate 15, the 3rd cross gate 16, first cross gate 14 is in abutting connection with total sprue 2, the 3rd cross gate 16 is in abutting connection with dividing sprue 4, second cross gate 15 is communicated with first cross gate 14 and the 3rd cross gate 16, first cross gate 14, second cross gate 15 are positioned at sustained height, and the 3rd cross gate 16 is put filter 17 at the downside of second cross gate 15 and between the 3rd cross gate 16 and second cross gate 15.The upper surface that this structure is convenient to corresponding filter 17 is provided with die joint 18 and whole casting mold is divided into mo(u)ld top half 19 and mo(u)ld bottom half 20 formation, also is beneficial to impurity screening during cast.Referring to Fig. 3, the mobile type that fills of molten metal when pouring into a mould in order to be beneficial to, the width of second cross gate 15, the 3rd cross gate 16 is wide than first cross gate 14.
In order to increase flow, the maximum total sectional area of annular cross section ingate 6 is 2～4 times of total sprue sectional area.
This running gate system is particularly suited for pouring into a mould the heavy castings that the bottom does not have large through-hole, and therefore the bottom of die cavity is set to continuous space.
During cast, molten metal enters die cavity 1 through first cross gate 14, second cross gate 15, filter 17, the 3rd cross gate 16, branch sprue 4, branch cross gate 5, annular cross section ingate 6 successively from total sprue 2, forms foundry goods behind the crystallisation by cooling.Because the maximum total sectional area of annular cross section ingate 6 is big, can reach 2～4 times of total sprue sectional area, the speed that can make molten metal pass through the annular cross section ingate reduces greatly, and the flow that enters die cavity heightens, and guarantees that molten metal can steadily fill type fast, and what reach big flow, low flow velocity fills the type purpose, make molten metal flow into die cavity stably, avoid the secondary slag to be involved in molten metal and bring die cavity into, thereby guarantee casting quality, be suitable for the casting of various heavy castings.Further,, can reduce the sandbox volume, reduce the molding sand consumption, thereby reduce production costs greatly owing to adopt the annular cross section ingate; Can make molten metal flow into die cavity stably, the oxidizing slag that is produced when preventing owing to the molten metal turbulent flow effectively is involved in die cavity, prevents that the slag inclusion of foundry goods from producing, thereby improves casting quality; Because molten iron enters die cavity by the annular cross section ingate, be difficult for producing temperature difference, reduce local loose generation, guaranteed casting quality; And it is easy to operate.
Claims (10)
1. the bottom gating of annular cross section ingate, comprise die cavity (1) and the total sprue (2) that links to each other successively, cross gate (3), divide sprue (4), divide cross gate (5), it is characterized in that described minute cross gate (5) be connected to the bottom of described die cavity (1) through annular cross section ingate (6).
2. the bottom gating of annular cross section ingate according to claim 1, it is characterized in that described die cavity (1) be formed on molding sand (7) and place the last loam core (8) of molding sand (7), down between the loam core (9).
3. the bottom gating of annular cross section ingate according to claim 2 is characterized in that described annular cross section ingate (6) is formed on surrounding of described loam core (9) down on every side and by molding sand (7).
4. the bottom gating of annular cross section ingate according to claim 3, it is characterized in that big up and small down round table-like in described down loam core (9), the upper end diameter of described annular cross section ingate (6) is big than lower end diameter, and the width unanimity of described annular cross section ingate (6).
5. the bottom gating of annular cross section ingate according to claim 2, the lower end that it is characterized in that described down loam core (9) has a planar annular (10) and be formed for placing protuberance (11) on the described molding sand (7) in the middle of this planar annular (10), described minute cross gate (5) be on described molding sand (7), to offer translot (12) and be communicated with the annular groove (13) of described translot (12) and cover described translot (12) and annular groove (13) forms by described planar annular (10), described translot (12) is in abutting connection with dividing sprue (4), and described annular groove (13) is in abutting connection with annular cross section ingate (6).
6. according to the bottom gating of each described annular cross section ingate among the claim 1-5, it is characterized in that described cross gate (3) comprises first cross gate (14), second cross gate (15), the 3rd cross gate (16), described first cross gate (14) is in abutting connection with total sprue (2), described the 3rd cross gate (16) is in abutting connection with dividing sprue (4), described second cross gate (15) is communicated with first cross gate (14) and the 3rd cross gate (16), described first cross gate (14), second cross gate (15) is positioned at sustained height, and described the 3rd cross gate (16) is positioned at the downside of described second cross gate (15) and puts filter (17) between the 3rd cross gate (16) and second cross gate (15).
7. the bottom gating of annular cross section ingate according to claim 6 is characterized in that the width of described second cross gate (15), the 3rd cross gate (16) is wide than first cross gate (14).
8. the bottom gating of annular cross section ingate according to claim 6 is characterized in that the upper surface of corresponding described filter (17) is provided with die joint (18).
9. the bottom gating of annular cross section ingate according to claim 1, the maximum total sectional area that it is characterized in that described annular cross section ingate (6) are 2～4 times of total sprue (2) sectional area.
10. the bottom gating of annular cross section ingate according to claim 1, the bottom that it is characterized in that described die cavity (1) is continuous space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205309536U CN201815626U (en) | 2010-09-15 | 2010-09-15 | Bottom pouring gating system with annular cross-sectioned ingate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205309536U CN201815626U (en) | 2010-09-15 | 2010-09-15 | Bottom pouring gating system with annular cross-sectioned ingate |
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| Publication Number | Publication Date |
|---|---|
| CN201815626U true CN201815626U (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205309536U Expired - Fee Related CN201815626U (en) | 2010-09-15 | 2010-09-15 | Bottom pouring gating system with annular cross-sectioned ingate |
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| CN (1) | CN201815626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966559A (en) * | 2010-09-15 | 2011-02-09 | 浙江佳力风能技术有限公司 | Bottom gating system with ingate in circular cross section |
| CN108380817A (en) * | 2018-04-13 | 2018-08-10 | 芜湖久弘重工股份有限公司 | A kind of casting large-scale vertical machining centre column special type exhaust system |
-
2010
- 2010-09-15 CN CN2010205309536U patent/CN201815626U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966559A (en) * | 2010-09-15 | 2011-02-09 | 浙江佳力风能技术有限公司 | Bottom gating system with ingate in circular cross section |
| CN101966559B (en) * | 2010-09-15 | 2012-07-25 | 浙江佳力风能技术有限公司 | Bottom casting system of ingate of circular cross section |
| CN108380817A (en) * | 2018-04-13 | 2018-08-10 | 芜湖久弘重工股份有限公司 | A kind of casting large-scale vertical machining centre column special type exhaust system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20130915 |