CN214867202U - Casting system for low-slag-inclusion production of wind power castings - Google Patents
Casting system for low-slag-inclusion production of wind power castings Download PDFInfo
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- CN214867202U CN214867202U CN202023163157.6U CN202023163157U CN214867202U CN 214867202 U CN214867202 U CN 214867202U CN 202023163157 U CN202023163157 U CN 202023163157U CN 214867202 U CN214867202 U CN 214867202U
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Abstract
The utility model relates to a low casting system who presss from both sides sediment production of wind-powered electricity generation foundry goods, including runner basin (1) that connects gradually, lid case sprue (2), cross gate (3), the vertical runner (4) of under casing, under casing cross gate (5), ingate (6) and the structure of giving vent to anger, the structure of giving vent to anger is located the top of foundry goods die cavity, ingate (6) set up the bottom at the foundry goods die cavity, runner basin (1) is used for accepting the molten iron and filters the molten iron for the first time, the molten iron after the filtration flows into lid case sprue (2), cross gate (3) are used for to molten iron secondary filter and with molten iron to the vertical runner (4) reposition of watering of under casing, the under casing cross gate (5) send molten iron to ingate (6) from bottom to top, ingate (6) let in the foundry goods die cavity from bottom to top again with molten iron. According to the method, the molten iron is purified in the molten iron flowing process, and slag inclusions are removed, so that the purpose of reducing the slag inclusions in the casting is achieved.
Description
Technical Field
The utility model relates to a casting machine of foundry goods, more specifically are a casting machine for wind-powered electricity generation wheel hub, base.
Background
The requirements on the quality and the performance of the wind power casting are high, because the wind power casting has a large section, uneven wall thickness and a complex structure, the working environment of a wind turbine generator is severe, and the maintenance is difficult, so that the requirements on the product quality and the service performance of the wind power casting are high. Slag inclusion is the most common defect in the production of nodular cast iron and is mostly present on the upper plane of casting pouring or the upper surface part of a mold core. The slag inclusion defect seriously affects the mechanical properties of the casting, particularly the toughness and the yield strength, so that the pressure bearing part leaks. Therefore, most of the production processes of wind power castings such as hubs and bases use a filter screen or a filter disc to filter molten iron so as to solve the slag inclusion defect, but the use of the filter screen or the filter disc to filter the molten iron can lead to the reduction of the whole casting production efficiency and the obvious increase of the cost.
Based on the current production situation, the research on the low slag inclusion production process of the hub and base wind power castings still deserves continuous exploration of the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a casting system for the production of wheel hub, base class wind-powered electricity generation foundry goods, this casting system can fill the type in-process at the molten iron and purify the molten iron, get rid of and press from both sides the sediment thing, reach the purpose that presss from both sides the sediment thing in reducing the foundry goods.
The utility model provides a technical scheme that above-mentioned problem adopted does: the casting system comprises a pouring basin, a cover box sprue, a cross runner, a bottom box vertical runner, a bottom box transverse runner, an inner runner and a gas outlet structure which are sequentially connected, wherein the gas outlet structure is positioned at the top of the casting cavity, the inner runner is arranged at the bottom of the casting cavity, the pouring basin is used for receiving molten iron and filtering the molten iron for the first time, the filtered molten iron flows into the cover box sprue, the cross runner is used for filtering the molten iron for the second time and distributing the molten iron to the bottom box vertical runner, the bottom box transverse runner sends the molten iron to the inner runner from bottom to top, and the inner runner leads the molten iron into the casting cavity from bottom to top.
Preferably, be provided with runner basin sluice trough in the runner basin, set up the gate brick in the runner basin sluice trough, through the gate brick separates the runner basin into runner basin entrance chamber and runner basin export chamber, runner basin entrance chamber is used for accepting the molten iron, and runner basin entrance chamber and runner basin export chamber bottom intercommunication, runner basin export chamber with cover case sprue intercommunication.
Preferably, the outlet cavity of the pouring basin is higher than the inlet cavity, so that slag floating in the molten iron is blocked by the gate bricks, and the inlet cavity is larger in volume than the outlet cavity. And the gate bricks are used for blocking slag, molten iron flows through the lower part of the gate, and the slag is blocked by the gate bricks.
Preferably, the bore of the cover box sprue is in a reverse taper shape with a large top and a small bottom, and the bore of the bottom box vertical sprue is in a reverse taper shape with a large top and a small bottom, so that the gas entrainment is prevented, and the slag blocking is facilitated. The caliber of the transverse pouring gate of the bottom box is conical along with the gradual increase of the flow direction of molten iron, so that the speed of the molten iron is reduced, and the molten iron is prevented from generating turbulence.
Preferably, the cross runner comprises a bottom box and an upper box, the upper box positioned on the upper side is in lap joint communication with the bottom box positioned on the lower side, the cover box sprue is connected with the bottom box, molten iron flows into the upper box from the bottom box, and the upper box is connected with the bottom box vertical runner. Further, set up end box gate slot in the end box, set up the gate brick in the end box gate slot, through the gate brick separates end box into end box inlet chamber and end box outlet chamber with end box, end box outlet chamber with end box inlet chamber bottom intercommunication, the lid case sprue is connected end box inlet chamber, end box outlet chamber with go up box overlap joint intercommunication. When pouring, the molten iron flows through the lower part of the gate brick, the slag is blocked by the gate, the molten iron flows to the upper surface, the slag floats above the lap joint when flowing upwards, and the molten iron flows downwards into the vertical pouring channel of the bottom box.
Preferably, the periphery of the ingate is provided with a fash with the thickness of 10-20 mm, the middle of the ingate is provided with a socket, and the upper end and the lower end of the socket respectively exceed the ingate to buffer. The purpose of the ingate with the structure is that molten iron is fed stably and uniformly, and the flowing direction of the molten iron is adjusted when the ingate is fed with the molten iron, so that the fluidity of the molten iron in a filling dead angle area is improved conveniently, and slag inclusion aggregation is prevented.
Preferably, the gas outlet structure comprises one or more of a side pressing cap opening, side gas outlet and a gas outlet sheet, and aims to overflow dirty molten iron and cold molten iron in the molten iron to a cavity so as to prevent slag inclusion and cold shut defects.
Compared with the prior art, the utility model has the advantages of: the pouring basin is of a gate type, and slag is removed from molten iron for the first time, so that slag inclusion is reduced and the molten iron enters a pouring gate; the cover box sprue is inverted cone-shaped, so that air entrainment is reduced; the cross gate adopts a lap joint mode to enhance the slag stopping capability and is used for realizing secondary slag removal of molten iron; the ingate is a flash pouring channel, so that molten iron is fed stably, the molten iron feeding direction is adjusted, the molten iron fluidity of a dead angle area at the position of an iron inlet can be improved, and slag inclusion aggregation is reduced; the air outlet structure can overflow early-stage dirty molten iron and cold molten iron in the casting cavity, and the casting quality is improved.
Drawings
FIG. 1 is a schematic structural view of a casting system for low slag inclusion production of a wind power hub casting according to an embodiment of the present invention;
FIG. 2 is another perspective of the structure shown in FIG. 1;
FIG. 3 is a schematic structural view of a casting system for low slag inclusion production of a wind power base casting according to an embodiment of the present invention;
FIG. 4 is another perspective of the structure shown in FIG. 3;
fig. 5 is a schematic structural view of a pouring basin in an embodiment of the present invention;
FIG. 6 is a schematic structural view of a cross runner according to an embodiment of the present invention;
FIG. 7 is a front view of the ingate of the hub in an embodiment of the present invention;
FIG. 8 is a cross-sectional view of the ingate of the hub in an embodiment of the present invention;
FIG. 9 is a perspective view of a wheel hub ingate in an embodiment of the present invention;
FIG. 10 is a front view of the base ingate in an embodiment of the present invention;
FIG. 11 is a cross-sectional view of a base ingate in an embodiment of the present invention;
FIG. 12 is a perspective view of a base ingate in an embodiment of the present invention;
in the figure: the gate basin comprises a gate basin 1, a cover box sprue 2, a cross runner 3, a bottom box vertical runner 4, a bottom box cross runner 5, an ingate 6, a hub 7, a side vent 8, a vent sheet 9, a base 11, a blank holder riser 12, a gate basin gate groove 101, a gate basin inlet cavity 102, a gate basin outlet cavity 103, a bottom box 301, an upper box 302, a bottom box gate groove 303, a bottom box inlet cavity 304 and a bottom box outlet cavity 305.
Detailed Description
The present invention will be described in further detail with reference to the following drawings, which are illustrative and are not to be construed as limiting the present invention. 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.
Example 1
The embodiment relates to a casting system of low slag production that presss from both sides of wind-powered electricity generation wheel hub for pouring molten iron in the foundry goods die cavity to the sand box, the sand box includes the lid case and the under casing that each other approximately closed from top to bottom, according to the flow direction of molten iron, this casting system is including runner basin 1, lid case sprue 2, cross gate 3, the vertical 4 of watering of under casing, under casing cross gate 5, 6 and the structure of giving vent to anger of ingate, the structure of giving vent to anger includes that the limit gives vent to anger 8, the piece 9 of giving vent to anger, the structure of giving vent to anger is located the top of foundry goods die cavity.
Be provided with runner basin sluice trough 101 in the runner basin 1, set up the gate brick in the runner basin sluice trough 101, separate into runner basin inlet chamber 102 and runner basin export chamber 103 with runner basin 1 through the gate brick, runner basin inlet chamber 102 is used for accepting the molten iron, and runner basin inlet chamber 102 and runner basin export chamber 103 bottom intercommunication, runner basin export chamber 103 and cover case sprue 2 intercommunication. The sprue basin inlet cavity 102 is taller than the sprue basin outlet cavity 103, and the sprue basin inlet cavity 102 is more voluminous than the sprue basin outlet cavity 103. The pouring basin 1 is used for receiving molten iron and filtering the molten iron for the first time, and the molten iron flows into the cover box sprue 2 from the pouring basin outlet cavity 103.
The cross runner 3 comprises a bottom box 301 and two upper boxes 302, wherein the upper box 302 positioned on the upper part is in lap joint communication with the bottom box 301 positioned on the lower part, and molten iron flows into the upper box 302 from the bottom box 301 upwards. Set up two end box gate slots 303 in the end box 301, set up the gate brick in the end box gate slot 303, separate end box 301 into end box inlet chamber 304 and two end box outlet chamber 305 through the gate brick, two end box outlet chamber 305 are located end box inlet chamber 304 both sides and communicate with end box inlet chamber 304 bottom respectively, end box inlet chamber 304 is used for annotating iron to end inlet chamber 304 is connected to cover box sprue 2, overflow into the end box outlet chamber 305 of both sides through gate brick below, the gate brick blocks the dross in the molten iron, the molten iron upwards overflows from end box outlet chamber 305 and goes into the lapped last box 302 with it again, go up box 302 bottom and communicate with end box vertical runner 4 again, the dross in the molten iron remains the upper portion at last box 302. The cross pouring gate 3 is of a lap joint structure, molten iron flows through the lower part of the gate brick during pouring, slag is blocked by the gate brick, the molten iron flows to the upper surface again, the slag floats above the lap joint during upward flow, and the molten iron flows downwards into the bottom box vertical pouring gate 4.
The horizontal pouring gate 5 of the bottom box sends the molten iron to the inner pouring gate 6 from bottom to top, and the inner pouring gate 6 leads the molten iron into the casting cavity from bottom to top.
The diameter of the cover box sprue 2 is inverted cone-shaped with big top and small bottom, so that air entrainment is prevented, and slag blocking is facilitated. The bottom box vertical pouring gate is in an inverted cone shape with a big end up and a small end down in caliber like the cover box straight pouring gate 2. The caliber of the transverse pouring gate 5 of the bottom box is conical along with the gradual increase of the flow direction of the molten iron, the molten iron is introduced into the inner pouring gate 6, the molten iron enters the inner pouring gate 6 from bottom to top, the inner pouring gate 6 is arranged at the bottom of the casting cavity, the inner pouring gate 6 is disc-shaped, the periphery of the inner pouring gate is provided with a fash 601, and the thickness of the fash 601 is 15mm-25 mm. The middle of the base is provided with a socket 602, and the upper end and the lower end of the socket 602 respectively exceed the ingate 6 and are used for the slow flow of molten iron.
Example 2
Referring to fig. 3-4, the casting system for low slag inclusion production of a wind power base in the present embodiment is similar to the casting system for a wind power hub in embodiment 1, except that the air outlet structure in the present embodiment is composed of a dead-end riser 12 and an air outlet sheet 9. The ingate 6 for the base is suitably of boat form.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a casting system of low slag inclusion production of wind-powered electricity generation foundry goods for pour into a mould molten iron in to the foundry goods die cavity of sand box, the sand box includes lid case and the bottom box that each other covers closed from top to bottom, its characterized in that: according to the flow direction of molten iron, the casting system comprises a pouring basin (1), a cover box sprue (2), a cross gate (3), a bottom box vertical gate (4), a bottom box transverse gate (5), an ingate (6) and an air outlet structure which are sequentially connected, wherein the air outlet structure is positioned at the top of a casting cavity, the ingate (6) is arranged at the bottom of the casting cavity, the pouring basin (1) is used for receiving molten iron and filtering the molten iron for the first time, the filtered molten iron flows into the cover box sprue (2), the cross gate (3) is used for filtering the molten iron for the second time and shunting the molten iron to the bottom box vertical gate (4), the bottom box transverse gate (5) sends the molten iron to the ingate (6) from bottom to top, and the ingate (6) leads the molten iron into the casting cavity from bottom to top.
2. The casting system of claim 1, wherein: be provided with runner basin sluice trough (101) in runner basin (1), set up the gate brick in runner basin sluice trough (101), through the gate brick separates runner basin (1) into runner basin inlet chamber (102) and runner basin export chamber (103), runner basin inlet chamber (102) are used for accepting the molten iron, and runner basin inlet chamber (102) and runner basin export chamber (103) bottom intercommunication, runner basin export chamber (103) with cover case sprue (2) intercommunication.
3. The casting system of claim 2, wherein: the sprue basin outlet cavity (103) is taller than the sprue basin inlet cavity (102), or the sprue basin inlet cavity (102) is bulkier than the sprue basin outlet cavity (103).
4. The casting system of claim 1, wherein: the diameter of the cover box sprue (2) is inverted cone-shaped with big top and small bottom,
or the caliber of the bottom box vertical pouring gate (4) is inverted cone-shaped with big top and small bottom,
or the caliber of the transverse pouring gate (5) of the bottom box is tapered along with the gradual increase of the flow direction of the molten iron.
5. The casting system of claim 1, wherein: the horizontal pouring channel (3) comprises a bottom box (301) and an upper box (302), the upper box (302) is located at the upper position and is in lap joint communication with the bottom box (301) located at the lower position, the cover box straight pouring channel (2) is connected with the bottom box (301), molten iron flows into the upper box (302) from the bottom box (301), and the upper box (302) is connected with the bottom box vertical pouring channel (4).
6. The casting system of claim 5, wherein: set up end box sluice gate groove (303) in end box (301), set up the gate brick in end box sluice gate groove (303), through the gate brick separates end box (301) into end box entrance chamber (304) and end box export chamber (305), end box export chamber (305) with end box entrance chamber (304) bottom intercommunication, cover case sprue (2) are connected end box entrance chamber (304), end box export chamber (305) with go up box (302) overlap joint intercommunication.
7. The casting system of claim 1, wherein: the periphery of the ingate (6) is provided with a fash (601), the middle of the ingate is provided with a socket (602), and the upper end and the lower end of the socket (602) respectively exceed the ingate (6).
8. The casting system of claim 7, wherein: the thickness of the fash (601) is 15-25 mm.
9. The casting system of claim 1, wherein: the air outlet structure comprises one or more of an edge pressing riser (12), an edge air outlet (8) and an air outlet sheet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023163157.6U CN214867202U (en) | 2020-12-24 | 2020-12-24 | Casting system for low-slag-inclusion production of wind power castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023163157.6U CN214867202U (en) | 2020-12-24 | 2020-12-24 | Casting system for low-slag-inclusion production of wind power castings |
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| Publication Number | Publication Date |
|---|---|
| CN214867202U true CN214867202U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023163157.6U Active CN214867202U (en) | 2020-12-24 | 2020-12-24 | Casting system for low-slag-inclusion production of wind power castings |
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| CN (1) | CN214867202U (en) |
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- 2020-12-24 CN CN202023163157.6U patent/CN214867202U/en active Active
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