CN215356061U - Casting structure of wind-powered electricity generation axle class foundry goods - Google Patents
Casting structure of wind-powered electricity generation axle class foundry goods Download PDFInfo
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- CN215356061U CN215356061U CN202023204756.8U CN202023204756U CN215356061U CN 215356061 U CN215356061 U CN 215356061U CN 202023204756 U CN202023204756 U CN 202023204756U CN 215356061 U CN215356061 U CN 215356061U
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Abstract
The utility model relates to a casting structure of a wind power shaft type casting, which comprises a metal mold, a sand core, a body riser, a chill, a vent and a pouring system, wherein the sand core is arranged in a cavity of the metal mold, a gap between the sand core and the metal mold forms a casting cavity, the body riser is arranged at the top of the casting cavity, the height of the body riser is 250-plus-320 mm, the chill is arranged on the peripheral wall of the body riser, the vent is arranged at the top of the body riser, the pouring system comprises a sprue, a socket and an inner runner, the sprue vertically penetrates through the sand core, the socket is positioned below the sand core, the bottom of the sprue is connected with the socket, the socket is further connected with the casting cavity through the inner runner, and a plurality of inner runners are radially arranged on the periphery of the socket. This application is through optimizing the height to the body rising head to set up the shrinkage porosity tendency that the wind-powered electricity generation cast main shaft top through setting up the round chill around the body rising head.
Description
Technical Field
The utility model relates to a casting structure of a shaft casting, in particular to a casting structure of a large shaft casting in the field of wind power.
Background
At present, most wind power casting main shafts in the market use conventional sand casting processes, the materials relate to QT400-18AL (EN-GJS-400-18-LT), the process can basically meet the requirements of medium-power fans, but the development trend of high power and light weight is more and more obvious along with the wind power industry, namely, the improvement of the specification and mechanical property requirements of castings puts forward new requirements for the casting processes. The metal mold casting process of the main shaft (EN-GJS-500-14) gradually becomes the latest research and development target of various wind power manufacturers, the metal mold casting process can basically solve the problem of shrinkage porosity of a shaft body, but the problem of shrinkage porosity of a non-metal mold covering area of the end face of the shaft is still difficult to solve.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a casting structure of a wind power shaft casting, which solves the problem of shrinkage porosity of a non-metal type covering area of a shaft end face in the existing metal type casting machine structure, improves the quality of the shaft casting and aims to obtain a wind power shaft product with better performance.
The technical scheme adopted by the utility model for solving the problems is as follows: the casting structure of the wind power shaft type casting comprises a metal mold, a sand core, a body riser, a chill, a gas outlet and a pouring system, wherein the sand core is arranged in a cavity of the metal mold, a gap between the sand core and the metal mold forms a casting cavity, the body riser is arranged at the top of the casting cavity, the height of the body riser is 250-fold-320 mm, the chill is arranged on the peripheral wall of the body riser, the gas outlet is arranged at the top of the body riser, the pouring system comprises a sprue, a socket and an ingate, the sprue vertically penetrates through the sand core, the socket is located below the sand core, the bottom of the sprue is connected with the socket, the socket is connected with the casting cavity through the ingate, and the ingates are radially arranged on the periphery of the socket.
As an embodiment of the present application, the outlet is a flat outlet.
As an embodiment of the present application, the chiller is disposed on top of the metal mold.
As an embodiment of the application, the body riser is conical with a small top and a big bottom.
As an embodiment of the application, the bottom of the metal mold is provided with a flanging, and the bottom of the casting cavity is correspondingly provided with an outward-turned horizontal flanging.
As an embodiment of this application, the ingate includes interior horizontal runner and interior vertical runner, the nest seat with interior horizontal runner is connected, interior horizontal runner again with interior vertical runner is connected, interior vertical runner sets up foundry goods die cavity bottom, the bore of interior horizontal runner is crescent along with the molten iron flow direction to reduce the roll up gas.
Compared with the prior art, the utility model has the advantages that: this application reduces the shrinkage porosity tendency on wind-powered electricity generation casting main shaft top through highly setting up the body rising head, and the rising head height is too low, and the feeding effect on foundry goods top is not enough, but the rising head height is too high, not only reduces the yield of foundry goods, and foundry goods sand iron ratio corresponds the increase moreover, and casting cost increases promptly, and this application highly sets up the body rising head at 250 + 320mm, can solve the problem of 3MW power main shaft top shrinkage porosity. In addition, a circle of chilling blocks are arranged around the riser of the body, and the chilling blocks can be regarded as continuation of the top of the metal mold, so that the method is beneficial to inhibiting shrinkage porosity of the top of the shaft casting.
The nest seat in the gating system mainly plays the effect of slow flow and reposition of redundant personnel, and it is the effect that helps flow equalizing and cushioning to be radial setting around the nest seat with the ingate.
Drawings
FIG. 1 is a perspective view of a cast structure in an embodiment of the utility model;
FIG. 2 is a perspective view of another perspective of a cast structure according to an embodiment of the utility model;
FIG. 3 is a front view of a cast structure in an embodiment of the utility model;
FIG. 4 is a bottom view of a cast structure in an embodiment of the utility model;
FIG. 5 is an axial cross-sectional view of a cast structure in an embodiment of the utility model.
Detailed Description
The present invention will be described in further detail below with reference to the attached drawings, which are illustrative and are not to be construed as limiting the utility model. The description of the present embodiment is corresponding to the accompanying drawings, and the description related to the orientation is also based on the description of the accompanying drawings, and should not be construed as limiting the scope of the present invention.
As shown in fig. 1, the casting structure of the wind power shaft casting in the embodiment includes a metal mold 1, a sand core 2, a body riser 3, a chill 4, a flat vent 5 and a pouring system, wherein the sand core 2 is arranged at the center of a cavity of the metal mold 1, a casting cavity a is formed by a gap between the sand core 2 and the metal mold 1, a horizontal flanging is arranged at the bottom of the metal mold 1, and a corresponding horizontal flanging which is turned outwards is arranged at the bottom of the casting cavity a.
The body riser 3 is arranged at the top of the casting cavity a, the body riser 3 is in a conical shape with a small upper part and a large lower part, the height of the body riser 3 is 320mm, the chilling blocks 4 are arranged on the peripheral wall of the body riser 3, and the chilling blocks 4 are arranged at the top of the metal mold 1. The two flat outlet air 5 are symmetrically arranged at the top of the riser 3 of the body.
The gating system includes sprue 6, nest seat 7 and ingate 8, 6 vertical through-going psammitolite 2 of sprue, nest seat 7 is located 2 below of psammitolite, nest seat 7 is connected to 6 bottoms of sprue, nest seat 7 is through six 8 reconnection foundry goods die cavities a of ingate, six 8 ingates are radial setting in nest seat 7 periphery, ingate 8 includes interior cross gate 801 and interior vertical runner 802, nest seat 7 is connected with interior cross gate 801, interior cross gate 801 is connected with interior vertical runner 802 again, interior vertical runner 802 sets up in foundry goods die cavity a bottom, the bore of interior cross gate 801 increases along with the molten iron flow direction gradually in order to reduce the book gas.
The casting structure of above-mentioned structure adopts the metal mold to realize that the foundry goods outside cools off fast, through setting up the chill at the metal mold top, and the chill is located body rising head periphery simultaneously, can carry out the rapid cooling to axle type foundry goods top, and it is beneficial to reducing axle type foundry goods top shrinkage porosity. Moreover, the inventor further sets the height of the riser of the body, so that the riser feeding is ensured, meanwhile, the increase of production cost caused by too high riser is avoided as far as possible, and when the height of the riser of the body reaches 250-320mm, the problem of the casting shrinkage porosity at the top of the main shaft with the power of 3MW can be solved.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a casting structure of wind-powered electricity generation axle class foundry goods which characterized in that: the casting system comprises a sprue, a socket and an ingate, wherein the sprue is arranged in a cavity of the metal mold, a casting cavity is formed by a gap between the sand core and the metal mold, the body riser is arranged at the top of the casting cavity, the height of the body riser is 250-320mm, the chill is arranged on the peripheral wall of the body riser, the air outlet is arranged at the top of the body riser, the pouring system comprises a sprue, a socket and an ingate, the sprue vertically penetrates through the sand core, the socket is positioned below the sand core, the bottom of the sprue is connected with the socket, the socket is further connected with the casting cavity through the ingate, and the ingates are radially arranged at the periphery of the socket.
2. The casting structure of the wind-power shaft casting according to claim 1, characterized in that: the air outlet is flat.
3. The casting structure of the wind-power shaft casting according to claim 1, characterized in that: the chilling block is arranged at the top of the metal mold.
4. The casting structure of the wind-power shaft casting according to claim 1, characterized in that: the dead head of the body is in a conical shape with a small upper part and a big lower part.
5. The casting structure of the wind-power shaft casting according to claim 1, characterized in that: the bottom of the metal mold is provided with a flanging, and the bottom of the casting cavity is correspondingly provided with an outward-turned horizontal flanging.
6. The casting structure of the wind-power shaft casting according to claim 1, characterized in that: the ingate comprises an inner transverse gate and an inner vertical gate, the nest seat is connected with the inner transverse gate, the inner transverse gate is connected with the inner vertical gate, the inner vertical gate is arranged at the bottom of the casting cavity, and the caliber of the inner transverse gate is gradually increased along with the flow direction of molten iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023204756.8U CN215356061U (en) | 2020-12-27 | 2020-12-27 | Casting structure of wind-powered electricity generation axle class foundry goods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023204756.8U CN215356061U (en) | 2020-12-27 | 2020-12-27 | Casting structure of wind-powered electricity generation axle class foundry goods |
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| Publication Number | Publication Date |
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| CN215356061U true CN215356061U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023204756.8U Active CN215356061U (en) | 2020-12-27 | 2020-12-27 | Casting structure of wind-powered electricity generation axle class foundry goods |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833308A (en) * | 2022-04-14 | 2022-08-02 | 浙江坤博精工科技股份有限公司 | Umbrella-shaped molten iron pouring gate pouring structure of large wind power bearing block casting |
-
2020
- 2020-12-27 CN CN202023204756.8U patent/CN215356061U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833308A (en) * | 2022-04-14 | 2022-08-02 | 浙江坤博精工科技股份有限公司 | Umbrella-shaped molten iron pouring gate pouring structure of large wind power bearing block casting |
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