CN216324952U - Low-drop-rate-control aluminum alloy sand mold pouring system - Google Patents
Low-drop-rate-control aluminum alloy sand mold pouring system Download PDFInfo
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- CN216324952U CN216324952U CN202122842677.8U CN202122842677U CN216324952U CN 216324952 U CN216324952 U CN 216324952U CN 202122842677 U CN202122842677 U CN 202122842677U CN 216324952 U CN216324952 U CN 216324952U
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Abstract
The utility model discloses a low-drop-difference flow-rate-control aluminum alloy sand mold pouring system which comprises a pouring cup, wherein the pouring cup is connected with vertically-arranged straight runners from top to bottom, the straight runners are connected with horizontally-arranged cross runners, the cross runners are connected with vertically-arranged first-step straight runners, the first-step straight runners are connected with first-step cross runners with variable flow, the first-step cross runners are connected with first-side edge cap openings, the first-side edge cap openings are connected with first ingates, the first ingates are connected with casting mold cavities and connected to the bottom ends of the casting mold cavities, the defects of slag inclusion, air holes and the like caused by unreasonable design of the pouring system in aluminum alloy sand mold casting can be reduced, and the aluminum alloy sand mold casting qualification rate is improved.
Description
Technical Field
The utility model relates to a pouring system, in particular to a low-drop-rate flow-control aluminum alloy sand mold pouring system, and belongs to the field of casting.
Background
In the field of aluminum alloy casting, large castings in sand casting always have the problems of low qualification rate, poor casting mechanical property and the like, and meanwhile, the related research of aluminum alloy sand casting technology is not as good as that of cast iron and cast steel, so that the aluminum alloy sand casting is always not good, and a great part of defects are that the qualification rate is always low due to the defects of internal slag inclusion, air holes and the like, so that a slag-control pouring system needs to be designed. Through reasonable process design, the problems of slag inclusion, air holes and the like generated in the aluminum alloy sand casting pouring process are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a low-drop flow-rate-controlled aluminum alloy sand mold pouring system which has the technical characteristics of effectively reducing the generation of aluminum slag and air holes in castings and the like.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the utility model provides a low falling-difference flow rate control aluminum alloy sand mould gating system, includes the pouring basin, top-down the pouring basin is connected with the sprue of vertical arranging, the sprue is connected with the horizontal runner of horizontal arranging, the horizontal runner is connected with a ladder sprue of vertical arranging, a ladder sprue is connected with a ladder sprue that the traffic change set up, a ladder sprue is connected with a side limit cap mouth, a side limit cap mouth is connected with the ingate No. one, the ingate is connected with foundry goods model chamber and connects in foundry goods model chamber bottom department.
Preferably, the ratio of the height of the first ingate opening to the height of the casting mold cavity is 0.5-1: 1.
Preferably, the ratio of the transverse cross-sectional area of the straight pouring channel to the longitudinal cross-sectional area of the horizontal pouring channel is 1: 1.3; the ratio of the longitudinal sectional area of the horizontal pouring gate to the transverse sectional area of the first stepped straight pouring gate is 1: 1.3.
Preferably, the first step runner is divided into a left part and a right part, a filter screen is connected between the left part and the right part, the left part is connected with the first side edge cap opening, and the flow of the left part is reduced in a stepped manner and flows to the first side edge cap opening.
Preferably, the cross gate is provided with two, wherein one cross gate is connected with a ladder sprue arranged vertically, the other cross gate is connected with a second ladder sprue, the second ladder sprue is connected with a second ladder sprue set by the change of the flow, the second ladder sprue is connected with a second side edge cap opening, the second side edge cap opening is connected with a second inner gate, and the second inner gate is connected to the casting model cavity and connected to the bottom end of the casting model cavity.
Preferably, the ratio of the height of the second ingate opening to the height of the casting mold cavity is 0.5-1: 1.
Preferably, the length of the first step sprue is greater than that of the second step sprue.
Has the advantages that: compared with the prior art, the aluminum alloy sand casting device has the advantages that the casting system is small in size, rapid filling can be achieved, the contact time of high-temperature molten aluminum with high flow speed in the casting system and air is shortened, so that the generation of aluminum slag can be effectively reduced, meanwhile, the filter screen is designed to be close to an inner pouring gate, and the flow speed of the molten aluminum can be effectively reduced while the aluminum slag is filtered; the connection between the pouring system and the casting needs to be close to the lowest position of the casting so as to reduce the fall of molten aluminum entering the casting, thereby effectively reducing the generation of aluminum slag and air holes in the casting.
Drawings
Fig. 1 is a perspective view of the present invention.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following examples.
As shown in fig. 1, the specific embodiment of the low-drop-difference flow-rate-control aluminum alloy sand mold pouring system comprises a pouring cup 1 and a sprue 2 vertically arranged from top to bottom, wherein the sprue 1 is connected with a sprue 2 vertically arranged, the sprue 2 is connected with a transverse runner 3 horizontally arranged, the sprue 3 is connected with a first step sprue 4 vertically arranged, the first step sprue 4 is connected with a first step sprue 6 with variable flow, the first step sprue 6 is connected with a first side edge cap opening 7, the first side edge cap opening 7 is connected with a first ingate 8, and the first ingate 8 is connected with a casting mold cavity 9 and is connected to the bottom end of the casting mold cavity 9.
The principle is as follows: molten aluminum enters the pouring system through the pouring cup 1, sequentially flows along the sprue 2, the runner 3, the first stepped sprue 4, the first stepped sprue 6 and the first side edge cap opening 7 and then enters the inner pouring gate 8 and then enters the bottom end of the casting mold cavity 9, the molten aluminum is poured from the top up, the inner pouring gate 8 enters from the bottom of the casting, the inner pouring gate 8 enlarges the opening as much as possible, so that the speed of the molten aluminum entering the casting 9 can be greatly reduced, meanwhile, the inner pouring gate 8 does not have a fall with the casting 9, aluminum slag and air holes generated due to the fall are reduced, internal defects of the casting 9 are reduced, and meanwhile, the whole pouring system is reduced in size, so that the weight of the pouring system is reduced, aluminum is collected from the alloy of the casting, and the production cost of the casting is reduced.
In a preferred embodiment, the ratio of the height of the opening of the first ingate 8 to the height of the casting mold cavity 9 is 0.5-1: 1.
In a preferred embodiment, the ratio of the transverse cross-sectional area of the sprue 2 to the longitudinal cross-sectional area of the runner 3 is 1: 1.3; the ratio of the longitudinal sectional area of the horizontal pouring gate 3 to the transverse sectional area of the first stepped straight pouring gate 4 is 1: 1.3. The key that can realize reducing in this application and press from both sides sediment, gas pocket lies in: proportional relationship of cross-sectional area. The aluminum alloy casting technology is generally characterized in that the sectional area proportion of each part is set to be larger according to the aluminum water trend sequence and the easy oxidation characteristic of aluminum alloy and according to the alloy flowing sequence, for example, the casting handbook recommends that the sectional area proportion of each part of an aluminum alloy sand casting pouring system is as follows: cross-sectional area of sprue: cross-sectional area of runner 1: 2-5, to ensure the characteristics of an open gating system. But according to actual design, this proportion too big can lead to the gating system space too big, and the aluminium water is concentrated in the gating system, and the velocity of flow is very fast, and the gating system space is too big, can make the aluminium water be full of the gating system time longer to prolonged the contact time of high temperature, high-speed aluminium water and air, and then lead to high temperature aluminium water and air to take place chemical reaction, generate aluminium sediment or bubble, cause the foundry goods defect. According to the technical scheme, the sectional area proportion of each part in front of an inner sprue 8 is set to be 1; 1.3, the size of the pouring system is greatly reduced, and the sectional area of the inner pouring gate 8 is designed according to the size of the casting structure.
In a preferred embodiment, the first stepped runner 6 is divided into a left part and a right part, a filter screen 5 is connected between the left part and the right part, the left part is connected with the first side edge cap opening 7, and the flow of the left part is reduced in a stepped manner to flow to the first side edge cap opening 7. The filter screen 5 is designed to be close to the inner pouring gate 8, so that the flow velocity of molten aluminum can be effectively reduced while aluminum slag is filtered.
In a preferable embodiment mode, the number of the runners 3 is two, one runner 3 is connected with a first step sprue 4 which is vertically arranged, the other runner 3 is connected with a second step sprue 4.1, the second step sprue 4.1 is connected with a second step runner 3.1 which is set by the change of the flow, the second step runner 3.1 is connected with a second side edge cap 7.1, the second side edge cap 7.1 is connected with a second ingate 8.1, the second ingate 8.1 is connected to a casting model cavity 9 and is connected to the bottom end of the casting model cavity 9, and the number of the runners 3 can be further increased according to actual needs to accelerate the forming of castings.
In a preferred embodiment, the ratio of the height of the opening of the second ingate 8.1 to the height of the casting mold cavity 9 is 0.5-1: 1.
In a preferable embodiment, the length of the first stepped sprue 4 is greater than that of the second stepped sprue 4.1, the first stepped sprue 4 and the second stepped sprue 4.1 are mainly designed according to the shape of the casting, such as the height of one end of the casting and the low end of the casting, and the length of the first stepped sprue 4 and the second stepped sprue 4.1 can be adjusted according to actual conditions.
Finally, it should be noted that the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.
Claims (7)
1. The utility model provides a low dropout accuse velocity of flow aluminum alloy sand mould gating system which characterized in that: including pouring basin (1), top-down pouring basin (1) is connected with vertical sprue (2) of arranging, sprue (2) are connected with horizontal runner (3) of arranging, runner (3) are connected with vertical ladder sprue (4) of arranging, ladder sprue (4) are connected with ladder sprue (6) that the traffic change set up, ladder sprue (6) are connected with side limit cap mouth (7) No. one, side limit cap mouth (7) are connected with ingate (8) No. one, ingate (8) are connected with foundry goods model chamber (9) and connect in foundry goods model chamber (9) bottom department.
2. The low-drop flow-rate-controlled aluminum alloy sand mold gating system according to claim 1, which is characterized in that: the ratio of the height of the opening of the first ingate (8) to the height of the casting mold cavity (9) is 0.5-1: 1.
3. A low drop out flow rate controlled aluminum alloy sand mold gating system according to claim 1 or 2, wherein: the ratio of the transverse sectional area of the sprue (2) to the longitudinal sectional area of the horizontal runner (3) is 1: 1.3; the ratio of the longitudinal sectional area of the horizontal pouring gate (3) to the transverse sectional area of the first stepped straight pouring gate (4) is 1: 1.3.
4. The low-drop flow-rate-controlled aluminum alloy sand mold gating system according to claim 1, which is characterized in that: the first step cross gate (6) is divided into a left part and a right part, a filter screen (5) is connected between the left part and the right part, the left part is connected with the first side edge cap opening (7), and the flow of the left part is reduced in a stepped manner and flows to the first side edge cap opening (7).
5. The low-drop flow-rate-controlled aluminum alloy sand mold pouring system according to claim 3, characterized in that: cross runner (3) are equipped with two, and wherein, one cross runner (3) is connected with a ladder sprue (4) of vertical arranging, and another cross runner (3) is connected with No. two ladder sprue (4.1), No. two ladder sprue (4.1) that traffic change set up are connected with, No. two ladder sprue (3.1) are connected with No. two side limit caps (7.1), No. two side limit caps (7.1) are connected with No. two ingate (8.1), No. two ingate (8.1) are connected on foundry goods model chamber (9), and connect in foundry goods model chamber (9) bottom department.
6. The low-drop flow-rate-controlled aluminum alloy sand mold pouring system according to claim 5, characterized in that: the ratio of the height of the opening of the second ingate (8.1) to the height of the casting mold cavity (9) is 0.5-1: 1.
7. A low drop out flow rate controlled aluminum alloy sand casting system according to claim 5 or 6, wherein: the length of the first step sprue (4) is greater than that of the second step sprue (4.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122842677.8U CN216324952U (en) | 2021-11-19 | 2021-11-19 | Low-drop-rate-control aluminum alloy sand mold pouring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122842677.8U CN216324952U (en) | 2021-11-19 | 2021-11-19 | Low-drop-rate-control aluminum alloy sand mold pouring system |
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| Publication Number | Publication Date |
|---|---|
| CN216324952U true CN216324952U (en) | 2022-04-19 |
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| CN202122842677.8U Active CN216324952U (en) | 2021-11-19 | 2021-11-19 | Low-drop-rate-control aluminum alloy sand mold pouring system |
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- 2021-11-19 CN CN202122842677.8U patent/CN216324952U/en active Active
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