CN105436412A - Novel propeller casting mold nitrogen charging system - Google Patents
Novel propeller casting mold nitrogen charging system Download PDFInfo
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- CN105436412A CN105436412A CN201510812199.2A CN201510812199A CN105436412A CN 105436412 A CN105436412 A CN 105436412A CN 201510812199 A CN201510812199 A CN 201510812199A CN 105436412 A CN105436412 A CN 105436412A
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Abstract
The invention relates to a novel propeller casting mold nitrogen charging system which comprises a supporting shell, a casting mold, a pouring pipeline, a pouring box and a nitrogen injecting device. A mold cavity is formed in the casting mold which is provided with a first exhaust outlet, a second exhaust outlet, a first pouring inlet and a second pouring inlet. The pouring box is fixed to the top end of the supporting shell and provided with a pouring hole, the pouring pipeline is provided with a pouring inlet and two pouring outlets, the pouring inlet penetrates through the pouring hole to be communicated with the pouring box, and the two pouring outlets are connected with the first pouring inlet and the second pouring inlet in the casting mold. The nitrogen injecting device comprises a nitrogen cylinder, a reducing valve, a gas inlet pipeline and a connector. The problem that copper liquid is prone to oxidation and consequently oxidized slag is generated in the pouring process is solved.
Description
Technical field
The present invention relates to a kind of screw formative technology, in particular, particularly relate to a kind of new type propeller casting mold Nitrogen filling system.
Background technology
Screw is for hull provides the critical piece of power, current screw is all have main frame to drive, the quality of screw is directly connected to the navigation performance of boats and ships, existing large-size propeller cast is gravity bottom running, cast is highly very large, and the duration of pouring is very long, and copper liquid is in casting process, contact with the air in running channel and casting mold, produce copper liquid secondary oxidation; Adopt traditional gravity bottom running to there is following shortcoming: cast is highly large, and copper liquid easily produces turbulent flow, and in running channel in air oxygen react, produce oxidizing slag; The duration of pouring is long, and in copper liquid and casting mold, air is long for time of contact, and oxidation reaction occurs, and produces oxidizing slag; In order to remove foundry goods oxidizing slag, need larger allowance; Allowance strengthens, and add polishing cost and the consumption of copper material of foundry goods, having had a strong impact on the quality of screw, therefore researched and developed the novel foundry processing of a kind of screw, is those skilled in the art's urgent problems.
Summary of the invention
The object of the invention is to for above-mentioned the deficiencies in the prior art, a kind of new type propeller casting mold Nitrogen filling system is provided, to solve the problem of oxidizable generation oxidizing slag in copper liquid casting process.
Technical scheme of the present invention is achieved in that
A kind of new type propeller casting mold Nitrogen filling system, comprise support housing, mold, cast pipeline, pouring box and nitrogen injection device, die cavity is provided with in described mold, mold is provided with the first air exit, second air exit, first cast entrance and the second cast entrance, first air exit is positioned at mold top, second air exit is positioned at die walls, first cast entrance and the second cast entrance are all positioned at mold bottom, mold is fixed in support housing, first air exit is exposed outside at support housing, first air exit is provided with cover plate, second air exit is provided with sealing-plug,
Described pouring box is fixed on support housing top, pouring box is provided with plug hole, cast pipeline is provided with a cast import and two cast outlets, cast import is connected with pouring box through plug hole, and two cast export pours into a mould entrance, second respectively and pour into a mould entrance and be connected with first on mold;
Described nitrogen injection device comprises nitrogen cylinder, pressure-reducing valve, admission line and joint, the air inlet of admission line is connected with nitrogen cylinder, and air inlet is provided with pressure-reducing valve, and the gas outlet that joint is coated on admission line is outside, joint is fixed in sprue gate, and admission line is connected with cast pipeline.
Above-mentioned a kind of new type propeller casting mold Nitrogen filling system, wherein, the outer shape of described joint is agreed with mutually with plug hole, is provided with interface channel in joint, described interface channel and admission line interference fit.
Above-mentioned a kind of new type propeller casting mold Nitrogen filling system, wherein, described cover plate is provided with air leakage hole.
Beneficial effect of the present invention is:
A kind of new type propeller casting mold Nitrogen filling system of the present invention, after mold is baked, removes air-heater, and install nitrogen injection device, be connected with nitrogen cylinder by pressure-reducing valve nitrogen tube one end, the other end is connected with the plug hole in pouring box by nitrogen interface; Open pressure-reducing valve, nitrogen enters cast pipeline through pressure-reducing valve, nitrogen tube, nitrogen connector, and nitrogen is filled with in mold by cast pipeline; Inflate after several minutes, the air leakage hole place be placed in respectively by combustible on second row gas outlet and cover plate tests, if combustible extinguishes, prove that nitrogen is full of casting mold, close pressure-reducing valve, nitrogen injection device and cover plate are removed, use sealing-plug to close the second air exit; Pour into a mould, in casting process, the plug hole of copper water in pouring box enters cast pipeline, and enter casting mold by cast pipeline and contact with nitrogen, make it be oxidized, nitrogen is discharged by above mold gradually, until copper water fills casting mold; Mode of operation of the present invention is simple, nitrogen injection is carried out by using original cast pipeline, do not need additionally to set up nitrogen injection device, cost-saving, avoid occurring problem oxidizable in copper liquid casting process, this structure fabrication is simple, reduce allowance, reduce production cost, improve casting quality, the casting mold can arranging in pairs or groups different uses, and improves the practicality of whole Nitrogen filling system.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention.
Fig. 2 is A portion of the present invention enlarged drawing.
Detailed description of the invention
Technical scheme of the present invention is achieved in that
A kind of new type propeller casting mold Nitrogen filling system as shown in the figure, comprise support housing 1, mold 2, cast pipeline 3, pouring box 4 and nitrogen injection device 5, die cavity 6 is provided with in described mold 2, mold 6 is provided with the first air exit 7, second air exit 8, first cast entrance 9 and the second cast entrance 10, first air exit 7 is positioned at mold 2 top, second air exit 8 is positioned at die walls, first cast entrance 9 and the second cast entrance 10 are all positioned at mold bottom, mold 2 is fixed in support shell 1 body, first air exit 7 is exposed outside at support housing 1, first air exit 7 is provided with cover plate 11, described cover plate 11 is provided with air leakage hole 12, second air exit 8 is provided with sealing-plug 13,
Described pouring box 4 is fixed on support housing 1 top, pouring box 4 is provided with plug hole 14, cast pipeline 3 is provided with a cast import 15 and two cast outlets 16, cast import 15 is connected with pouring box 4 through plug hole 14, pours into a mould outlet 16 for two and pours into a mould entrance 9, second respectively with first on mold and pour into a mould entrance 10 and be connected;
Described nitrogen injection device 5 comprises nitrogen cylinder 17, pressure-reducing valve 18, admission line 19 and joint 20, the air inlet of admission line 19 is connected with nitrogen cylinder 17, air inlet 21 is provided with pressure-reducing valve 18, the gas outlet 21 that joint 20 is coated on admission line 19 is outside, joint 20 is fixed in sprue gate 14, admission line 19 is connected with cast pipeline 3, the outer shape of described joint 20 is agreed with mutually with plug hole 14, interface channel 22 is provided with, described interface channel 22 and admission line 19 interference fit in joint 20.
A kind of new type propeller casting mold Nitrogen filling system of the present invention, after casting mold is baked, removes air-heater, and install nitrogen injection device, be connected with nitrogen cylinder by pressure-reducing valve nitrogen tube one end, the other end is connected with the straight funnel in pouring box by nitrogen interface; Open pressure-reducing valve, nitrogen enters cast pipeline through pressure-reducing valve, nitrogen tube, nitrogen connector, and nitrogen is filled with in casting mold by cast pipeline; Inflate after several minutes, by combustible, the air leakage hole be placed in respectively on exhaust ports, cover plate is tested, if combustible extinguishes, proves that nitrogen is full of casting mold, closes pressure-reducing valve, nitrogen injection device and cover plate is removed, and uses loam core closed grate hole; Pour into a mould, in casting process, the straight funnel of copper water in pouring box enters cast pipeline, and enter casting mold by cast pipeline and contact with nitrogen, make it be oxidized, nitrogen is discharged by above casting mold gradually, until copper water fills casting mold; Mode of operation of the present invention is simple, nitrogen injection is carried out by using original cast pipeline, do not need additionally to set up nitrogen injection device, cost-saving, avoid occurring problem oxidizable in copper liquid casting process, this structure fabrication is simple, reduce allowance, reduce production cost, improve casting quality, the casting mold can arranging in pairs or groups different uses, and improves the practicality of whole Nitrogen filling system.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (3)
1. a new type propeller casting mold Nitrogen filling system, it is characterized by, comprise support housing, mold, cast pipeline, pouring box and nitrogen injection device, die cavity is provided with in described mold, mold is provided with the first air exit, second air exit, first cast entrance and the second cast entrance, first air exit is positioned at mold top, second air exit is positioned at die walls, first cast entrance and the second cast entrance are all positioned at mold bottom, mold is fixed in support housing, first air exit is exposed outside at support housing, first air exit is provided with cover plate, second air exit is provided with sealing-plug,
Described pouring box is fixed on support housing top, pouring box is provided with plug hole, cast pipeline is provided with a cast import and two cast outlets, cast import is connected with pouring box through plug hole, and two cast export pours into a mould entrance, second respectively and pour into a mould entrance and be connected with first on mold;
Described nitrogen injection device comprises nitrogen cylinder, pressure-reducing valve, admission line and joint, the air inlet of admission line is connected with nitrogen cylinder, and air inlet is provided with pressure-reducing valve, and the gas outlet that joint is coated on admission line is outside, joint is fixed in sprue gate, and admission line is connected with cast pipeline.
2. a kind of new type propeller casting mold Nitrogen filling system as claimed in claim 1, it is characterized by, the outer shape of described joint is agreed with mutually with plug hole, is provided with interface channel in joint, described interface channel and admission line interference fit.
3. a kind of new type propeller casting mold Nitrogen filling system as claimed in claim 1, it is characterized by, described cover plate is provided with air leakage hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510812199.2A CN105436412B (en) | 2015-11-23 | 2015-11-23 | A kind of propeller casting mold Nitrogen filling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510812199.2A CN105436412B (en) | 2015-11-23 | 2015-11-23 | A kind of propeller casting mold Nitrogen filling system |
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| CN105436412A true CN105436412A (en) | 2016-03-30 |
| CN105436412B CN105436412B (en) | 2017-12-22 |
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| CN201510812199.2A Active CN105436412B (en) | 2015-11-23 | 2015-11-23 | A kind of propeller casting mold Nitrogen filling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500377A (en) * | 2018-12-29 | 2019-03-22 | 镇江同舟螺旋桨有限公司 | A kind of large-size propeller casting mold nitrogen charging device |
| CN117139563A (en) * | 2023-08-25 | 2023-12-01 | 江苏万恒铸业有限公司 | Precision casting equipment and casting process of Monel nozzle |
Citations (5)
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| JPS5344427A (en) * | 1976-10-05 | 1978-04-21 | Kubota Ltd | Method to manufacture propellers by using extinguishable pattern |
| JPH0716701A (en) * | 1993-06-30 | 1995-01-20 | Hitachi Ltd | Propeller for motor boat and its production |
| CN201470860U (en) * | 2009-04-08 | 2010-05-19 | 芜湖新联造船有限公司 | Ship propeller casting and pouring system |
| CN102166620A (en) * | 2010-11-30 | 2011-08-31 | 大连华锐股份有限公司 | Molding method of copper alloy propeller resin sand |
| CN205147226U (en) * | 2015-11-23 | 2016-04-13 | 镇江同舟螺旋桨有限公司 | Novel screw casting mould fills nitrogen system |
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2015
- 2015-11-23 CN CN201510812199.2A patent/CN105436412B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5344427A (en) * | 1976-10-05 | 1978-04-21 | Kubota Ltd | Method to manufacture propellers by using extinguishable pattern |
| JPH0716701A (en) * | 1993-06-30 | 1995-01-20 | Hitachi Ltd | Propeller for motor boat and its production |
| CN201470860U (en) * | 2009-04-08 | 2010-05-19 | 芜湖新联造船有限公司 | Ship propeller casting and pouring system |
| CN102166620A (en) * | 2010-11-30 | 2011-08-31 | 大连华锐股份有限公司 | Molding method of copper alloy propeller resin sand |
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| 向延平: ""大型船用螺旋桨铸造工艺的探讨"", 《特种铸造及有色合金》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500377A (en) * | 2018-12-29 | 2019-03-22 | 镇江同舟螺旋桨有限公司 | A kind of large-size propeller casting mold nitrogen charging device |
| CN117139563A (en) * | 2023-08-25 | 2023-12-01 | 江苏万恒铸业有限公司 | Precision casting equipment and casting process of Monel nozzle |
| CN117139563B (en) * | 2023-08-25 | 2024-05-24 | 江苏万恒铸业有限公司 | Precision casting equipment and casting process of Monel nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105436412B (en) | 2017-12-22 |
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