CN102847914A - Sand-mould low pressure pouring system - Google Patents
Sand-mould low pressure pouring system Download PDFInfo
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- CN102847914A CN102847914A CN 201210335429 CN201210335429A CN102847914A CN 102847914 A CN102847914 A CN 102847914A CN 201210335429 CN201210335429 CN 201210335429 CN 201210335429 A CN201210335429 A CN 201210335429A CN 102847914 A CN102847914 A CN 102847914A
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Abstract
The invention discloses a sand-mould low pressure pouring system which comprises a sand-mould low pressure pouring machine and a detection and control unit, wherein the sand-mould low pressure pouring machine comprises a holding furnace, a middle division plate and an upper shield; the upper shield is fixed on the middle division plate for covering a sand-mould sand box; an air overflow valve is arranged on the upper shield; and the detection and control unit comprises a control system, a pressure sensor and a vector sensor. With the adoption of the sand-mould low pressure pouring system, the forming yield of a product reaches above 98%; the interior quality of the product is improved effectively; the density of a product body is increased by 5%; the interior organization structure of the product is improved effectively; the product performance is improved; as the production efficiency is improved, the waste is eliminated effectively; and the operation efficiency of an enterprise is improved.
Description
Technical field
The present invention relates to a kind of sand mold low-pressure casting system.
Background technology
Traditional sand mold air injection machine often is the one-way operation pattern, does not have system feedback loop form, in the actual use procedure, change at environment, change greatly such as temperature, humidity, and product is interior in the situation that pinhole rate requires to improve, and just has larger difficulty.Environment temperature raises, and it is large that humidity becomes, and easily causes quite a high proportion of product to have pin hole in the product moulding by casting process, or even the appearance of larger shrinkage cavity, directly causes product rejection, causes useless worker, waste material, forms waste.
Summary of the invention
The object of the invention provides a kind of sand mold low-pressure casting system with backfeed loop.
For achieving the above object, the present invention adopts following technical scheme:
A kind of sand mold low-pressure casting system, comprise sand mold low-pressure casting machine, described sand mold low-pressure casting machine comprises holding furnace and median septum, it is characterized in that: described sand mold low-pressure casting also comprises upper cover, described upper cover is fixed on the described median septum sealing of sand mold sandbox is covered, and described upper cover has been provided with overflow valve; Described sand mold low-pressure casting system also comprises the Detection ﹠ Controling unit, described Detection ﹠ Controling unit comprises control system and the pressure sensor that is connected with described control system and vector controlled valve, and the pressure that described control system is experienced according to the pressure sensor that is arranged in upper cover and the holding furnace furnace chamber is controlled upper cover and the interior pressure of holding furnace furnace chamber by the vector controlled valve.
The operation principle of sand mold low-pressure casting of the present invention system is: in the holding furnace of molten metal is housed, pass into dry compressed air, act on the metal bath surface that keeps uniform temperature, make molten metal along stalk from bottom to top, enter the sand mold sand chamber of making by running channel, after being full of die cavity, molten metal increases pressure, and make gas pressure on the liquid level be retained to foundry goods to solidify fully, then pressure relief, make that not solidified molten metal falls back in the holding furnace in stalk and the running channel, finish low pressure casting process one time, obtain required foundry goods after the open form.Whole low-pressure casting process is by Detection ﹠ Controling unit automation control, guarantees pressure and rises the accurate reproducibility of the technological parameters such as liquid, filling time.
Sand mold low-pressure casting of the present invention system, the formed product qualification rate is reached more than 98%, the product interior quality has obtained effective lifting, product ontology density has improved 5%, effectively improve the inherent institutional framework of product, improved properties of product, by the lifting of production efficiency, effectively eliminate waste, promoted enterprise operation efficient.
Description of drawings
Fig. 1 is structural representation of the present invention;
Among the figure, 1 is control system, and 2 is the first pressure sensor, 3 is the first vector controlled valve, and 4 is the second vector controlled valve, and 5 is the second pressure sensor, 6 is stalk, and 7 is crucible, and 8 is holding furnace, 9 is locking device, and 10 is set bolt, and 11 is top box, 12 is raising middle flask, and 13 is under casing, and 14 is upper cover, 15 is overflow valve, and 16 is median septum.
The specific embodiment
As shown in Figure 1, a kind of sand mold low-pressure casting system, comprise sand mold low-pressure casting machine and Detection ﹠ Controling unit, sand mold low-pressure casting machine comprises holding furnace 8, there is crucible 7 holding furnace 8 inside, there is median septum 16 holding furnace 8 tops, top box 11, raising middle flask 12 and nowel 13 are fixed together by set bolt 10, and be fixed on the median septum 16, upper cover 14 covers in the outside of casing, fix, be locked on the median septum 16 by locking, sealing device, there is overflow valve 15 on upper cover 14 tops and is used for the structure of convenient lifting.The Detection ﹠ Controling unit comprises and is connected with the first pressure sensor 2, the second pressure sensor 5, the first vector controlled valve 3 and the second vector controlled valve 4 on control system 1, the control system 1, the sensing device of the first pressure sensor 2 is arranged in the upper cover 14, and the sensing device of the second pressure sensor 5 is arranged in holding furnace 8 furnace chambers.
The operating procedure of this sand mold low-pressure casting system is as follows:
Write control program, and pour into control system 1;
With sand mold sandbox top box 11 to be cast, raising middle flask 12 and successively mould assembling of nowel 13, and adopt fixedly spiral 10 to fix;
Sand mold body after the mould assembling is lifted to the position of median septum 16 appointments, and require fixing, locking according to locking;
Lifting upper cover 14 is finished fixing, the locking of upper cover 14 and median septum 16 to median septum 16 assigned addresses according to the requirement of locking device 9;
Start the initial detecting program in the control system 1, check the duty of the first pressure sensor 2, the second pressure sensor 5, the first vector sensor 3, the second vector sensor 4 and overflow valve 15, confirm just can carry out next step operation when working properly;
Start product cast program;
The cast control program is improved, improved to record casting process data.
Sand mold low-pressure casting of the present invention system, the formed product qualification rate is reached more than 98%, the product interior quality has obtained effective lifting, product ontology density has improved 5%, effectively improve the inherent institutional framework of product, improved properties of product, by the lifting of production efficiency, effectively eliminate waste, promoted enterprise operation efficient.
Claims (1)
1. sand mold low-pressure casting system, comprise sand mold low-pressure casting machine, described sand mold low-pressure casting machine comprises holding furnace and median septum, it is characterized in that: described sand mold low-pressure casting also comprises upper cover, described upper cover is fixed on the described median septum sealing of sand mold sandbox is covered, and described upper cover has been provided with overflow valve; Described sand mold low-pressure casting system also comprises the Detection ﹠ Controling unit, described Detection ﹠ Controling unit comprises control system and the pressure sensor that is connected with described control system and vector controlled valve, and the pressure that described control system is experienced according to the pressure sensor that is arranged in upper cover and the holding furnace furnace chamber is controlled upper cover and the interior pressure of holding furnace furnace chamber by the vector controlled valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210335429 CN102847914A (en) | 2012-09-11 | 2012-09-11 | Sand-mould low pressure pouring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210335429 CN102847914A (en) | 2012-09-11 | 2012-09-11 | Sand-mould low pressure pouring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102847914A true CN102847914A (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210335429 Pending CN102847914A (en) | 2012-09-11 | 2012-09-11 | Sand-mould low pressure pouring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102847914A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874767A (en) * | 2015-06-25 | 2015-09-02 | 成都富江机械制造有限公司 | Multi-pipeline low-pressure and counter-pressure casting process and device |
-
2012
- 2012-09-11 CN CN 201210335429 patent/CN102847914A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874767A (en) * | 2015-06-25 | 2015-09-02 | 成都富江机械制造有限公司 | Multi-pipeline low-pressure and counter-pressure casting process and device |
| CN104874767B (en) * | 2015-06-25 | 2017-06-06 | 成都富江机械制造有限公司 | Multi-pipeline low pressure, counter-pressure casting technique and its equipment |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130102 |