CN203992248U - For improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate - Google Patents
For improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate Download PDFInfo
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- CN203992248U CN203992248U CN201420377453.1U CN201420377453U CN203992248U CN 203992248 U CN203992248 U CN 203992248U CN 201420377453 U CN201420377453 U CN 201420377453U CN 203992248 U CN203992248 U CN 203992248U
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Abstract
The utility model relates to lost foam casting field, specifically a kind of for improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate.This group mode structure comprises center pipe fitting model and some peripheral pipe fitting models, each peripheral pipe fitting model is arranged at around the pipe fitting model of center centered by the pipe fitting model of center, between center pipe fitting model bottom and each peripheral pipe fitting model bottom, the ingate model that two pipe fittings model is connected is set respectively; Pipe fitting model top, center arranges cup, and is provided with and is connected running channel model between pipe fitting model top, center and cup, and each peripheral pipe fitting model top is respectively arranged with rising head model.Above-mentioned model is the bubble moulding model that lost foam casting process is used.The utility model is simple and reasonable for structure, can reduce the iron liquid consumption of cast iron pipe fittings lost foam casting, reduces production costs, and improves cast iron pipe fittings lost foam casting process yield rate, is applicable to the lost foam casting of unlike material same type product.
Description
Technical field
The utility model relates to lost foam casting field, specifically a kind of for improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate.
Background technology
Lost foam casting process is a kind of technique of founding process of nearly clean type, and the green casting technique of 21st century is cast boundary both at home and abroad and is called in not only energy-conservation but also environmental protection.Lost foam casting process production procedure, comprising: the prefoam of a. bead, b. molding moulding, the white mould slaking of c. is bonding, d. coats, e. is dried, the vanning of f. group mould, j. vacuum-assist pouring, h. outlet are cleared up and obtained product.
The design of the design of lost foam casting process running gate system and other casting technique running gate system is basic identical, can take the multiple pouring types such as top pouring type cast, bottom pouring type pouring, the cast of side note formula, staged cast.
When with lost foam casting process manufacture order bellmouth or double-bellmouth cast iron pipe fittings, the bottom pouring type pouring modes that adopt more, but due to single bellmouth or double-bellmouth cast iron pipe fittings longer, the sprue arranging in running gate system need be more with iron liquid, product yield while making to produce is on the low side, causes production cost higher.
Summary of the invention
Product yield when the utility model is produced cast iron pipe fittings in order to improve lost foam casting process, provides a kind of for improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate.
The utility model is to adopt following technical scheme to realize: for improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate, comprise center pipe fitting model and some peripheral pipe fitting models, each peripheral pipe fitting model is arranged at around the pipe fitting model of center centered by the pipe fitting model of center, between center pipe fitting model bottom and each peripheral pipe fitting model bottom, the ingate model that two pipe fittings model is connected is set respectively, above-mentioned model is the bubble moulding model that lost foam casting process is used.
In addition, for subsequent implementation vacuum-assist pouring, pipe fitting model top, center arranges cup, and is provided with and is connected running channel model between pipe fitting model top, center and cup, each peripheral pipe fitting model top is respectively arranged with rising head model, and above-mentioned model is the bubble moulding model that lost foam casting process is used.
Described in the utility model group of mode structure assembled and cased in the group mould vanning step of lost foam casting process production procedure, vanning process is as follows: to lost foam casting process with pouring quartz sand in sandbox into, form the bed load of certain altitude in sandbox bottom, again the group mode structure of having dried is vertically put into sandbox, then dry sand jolt ramming is filled in layering, finally cover polyethylene film, connection running channel model top is laid cup and is completed vanning, implements subsequently vacuum-assist pouring.When vacuum-assist pouring, iron liquid flows into from cup, first by connecting running channel model, center pipe fitting model is full of, then, iron liquid flows into peripheral pipe fitting model by the ingate model of the each peripheral pipe fitting model of center pipe fitting model bottom connection more simultaneously, iron liquid will be full of the rising head model that arranges of each peripheral pipe fitting model and peripheral pipe fitting model top, wait in cup after iron liquid no longer flows downward, complete cast.
Connection running channel model in described in the utility model group of mode structure and center pipe fitting model are equivalent to the sprue of running gate system, and the cross-sectional area that connects running channel model should be less than or equal to the cross-sectional area of center pipe fitting model.
Adopt the principle of positive-pressure gating system design according to lost foam casting process, be ingate: sprue=1:1.2-1.4, in of the present utility model group of mode structure, ingate refers to the cross-sectional area summation of all ingate models, and sprue refers to and connects running channel model minimum cross section area.
Under the principle of above-mentioned lost foam casting process Design of Runner System, design cluster group mode structure, the diameter of each peripheral pipe fitting model is less than or equal to the diameter of center pipe fitting model.The quantity of peripheral pipe fitting model is identical with the quantity of ingate model, the parameter such as quantity and cross-sectional area, length of ingate model is according to the principle of above-mentioned ingate: sprue=1:1.2-1.4, and the factor such as the iron liquid casting speed of Design of Runner System determines, concrete how to confirm is known in those skilled in the art.Wherein, the length of ingate model should ensure cavity filling process not Yin Wendu raise and make model deformation.
In addition, in order to improve the intensity of described in the utility model group of mode structure, can be by lazy board of the prior art when group mould, the upper and lower surfaces of organizing mode structure are reinforced, to prevent from organizing moding shape.
Compared with prior art, the center pipe fitting model of described in the utility model group of mode structure has played the effect of sprue in bottom pouring type pouring mode.Like this, use of the present utility model group of mode structure, at lost foam casting process manufacture order bellmouth or double-bellmouth cast iron pipe fittings, while adopting bottom pouring type pouring mode, do not need, as prior art, longer sprue to be set, but also can be in the situation that other condition be identical, increase the cast of center pipe fitting product simultaneously, therefore, not only can reduce running gate system iron liquid consumption, effectively improve its lost foam casting process yield rate, can also greatly reduce production costs.
The utility model is simple and reasonable for structure, can reduce the iron liquid consumption of cast iron pipe fittings lost foam casting, reduces production costs, and improves cast iron pipe fittings lost foam casting process yield rate, is applicable to the lost foam casting of unlike material same type product.
Brief description of the drawings
fig. 1 is a concrete structure schematic diagram of the present utility model;
Fig. 2 is A-A cutaway view in Fig. 1;
In figure: the pipe fitting model of 1-center; The peripheral pipe fitting model of 2-; 3-ingate model; 4-connects running channel model; 5-cup; 6-rising head model.
Detailed description of the invention
As depicted in figs. 1 and 2, for improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate, comprise center pipe fitting model 1 and some peripheral pipe fitting models 2, each peripheral pipe fitting model 2 is arranged at around center pipe fitting model 1 centered by center pipe fitting model 1, between pipe fitting model 1 bottom, center and each peripheral pipe fitting model 2 bottoms, the ingate model 3 that two pipe fittings model is connected is set respectively; Above-mentioned model is the bubble moulding model that lost foam casting process is used.Pipe fitting model 1 top, center arranges cup 5, and is provided with and is connected running channel model 4 between pipe fitting model 1 top, center and cup 5, and each peripheral pipe fitting model 2 tops are respectively arranged with rising head model 6; Above-mentioned model is the bubble moulding model that lost foam casting process is used.
When group mould, the center pipe fitting model of this list bellmouth or double-bellmouth cast iron pipe fittings and each peripheral pipe fitting model and be connected running channel model 4, ingate model 3, rising head model 6 and use outside the combination of binding agent bonding, also need with conventional lazy board in prior art, the upper and lower surfaces of this group mode structure are reinforced, to prevent from organizing moding shape.
When cast, group mould is put into sandbox, after back-up sand jolt ramming, again cup is placed in and connects on running channel model 4, can under suction function, implement cast: iron liquid flows into from cup 5, first by connecting running channel model 4, center pipe fitting model 1 is full of, then, the ingate model 3 that iron liquid arranges respectively by pipe fitting model 1 bottom, center again flows into peripheral pipe fitting model 2 simultaneously, be full of and flow to again after each peripheral pipe fitting model 2 in the rising head model 6 that peripheral pipe fitting model top arranges Deng iron liquid, after iron liquid no longer flows downward in cup 5, complete cast.
While adopting this group mode structure, adopt the principle of positive-pressure gating system design and design main points and the pouring metal melt theory of running gate system as long as meet lost foam casting process, the coupling combination of its central tube part model 1 and peripheral pipe fitting model 2, can center be 8 inch, and periphery is 4 inch or 6 inch; Also can center be 6 inch, periphery be 4 inch or 6 inch; Can also center be 4 inch, periphery be the not tool of form such as 4 inch or 2 inch, and in each bunch of group mode structure, the quantity of peripheral tube part is all with mentioned above principle and theoretical calculative determination.
Embodiment
Weight of design cluster is 28 kilograms, and diameter is the double-bellmouth pipe fitting model of 8 inch, and 4 weight are 22 kilograms, and diameter is the double-bellmouth pipe fitting model of 4 inch, and the group mode structure of running gate system is:
The double-bellmouth pipe fitting model that the center pipe fitting model 1 of this group mode structure is 8 inch for this root diameter, pipe fitting model 1 periphery, center is uniformly distributed the double-bellmouth pipe fitting model that 4 diameters are 4 inch is set is pipe fitting model 2, these root 8 inch double-bellmouth pipe fitting model tops arrange and connect running channel model 4, connect on running channel model 4 and lay cup 5, the ingate model 3 that these root 8 inch double-bellmouth pipe fitting model bottom settings are connected with the double-bellmouth pipe fitting model bottom that peripheral 4 diameters are 4 inch, the top of each 4 inch double-bellmouth pipe fitting models is respectively arranged with rising head model 6.
According to evaporative pattern Design of Runner System principle and main points and pouring metal melt theory, design ingate 3 section configurations are rectangle, each ingate cross-sectional area is 3 square centimeters, 4 ingate cross-sectional areas amount to 12 square centimeters, connecting running channel 4 minimum cross section areas is 15 square centimeters, each Design of length of ingate 3 is 10 centimetres, and rising head model 6 is 3 square centimeters with the Section Design that is connected at each peripheral 4 inch double-bellmouth pipe fitting model tops.
When group mould, this this 8 inch and 4 inch double-bellmouth cast iron pipe fittings models and be connected running channel model 4, ingate model 3, rising head model 6 and use outside the combination of binding agent bonding, use again lazy board conventional in prior art, the upper and lower surfaces of this group mode structure are reinforced, to prevent from organizing moding shape.
When cast, group mould is put into sandbox, after back-up sand jolt ramming, cover polyethylene film, again cup is placed in and connects on running channel model 4, can under suction function, implement cast: iron liquid flows into from cup 5, first by connecting running channel model 4,8 inch pipe fitting models are full of, then, iron liquid flows into respectively peripheral 4 inch pipe fitting models by ingate model 3 more simultaneously, be full of and flow to again after peripheral 4 inch pipe fitting models in the rising head model 6 that peripheral 4 inch pipe fitting model tops arrange Deng iron liquid, after iron liquid no longer flows downward in cup 5, complete cast.
Claims (2)
1. one kind for improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate, it is characterized in that: comprise center pipe fitting model (1) and some peripheral pipe fitting models (2), each peripheral pipe fitting model (2) is arranged at center pipe fitting model (1) around centered by center pipe fitting model (1), between center pipe fitting model (1) bottom and each peripheral pipe fitting model (2) bottom, the ingate model (3) that two pipe fittings model is connected is set respectively, above-mentioned model is the bubble moulding model that lost foam casting process is used.
2. according to claim 1 for improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate, it is characterized in that: center pipe fitting model (1) top arranges cup (5), and be provided with and be connected running channel model (4) between pipe fitting model (1) top, center and cup (5), each peripheral pipe fitting model (2) top is respectively arranged with rising head model (6), and above-mentioned model is the bubble moulding model that lost foam casting process is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420377453.1U CN203992248U (en) | 2014-07-09 | 2014-07-09 | For improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420377453.1U CN203992248U (en) | 2014-07-09 | 2014-07-09 | For improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate |
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| Publication Number | Publication Date |
|---|---|
| CN203992248U true CN203992248U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420377453.1U Expired - Fee Related CN203992248U (en) | 2014-07-09 | 2014-07-09 | For improving the group mode structure of cast iron pipe fittings lost foam casting process yield rate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057030A (en) * | 2014-07-09 | 2014-09-24 | 阳城县华王通用离心铸管厂 | Combined model structure for improving product yield of evaporative pattern casting process for cast iron pipe fittings |
-
2014
- 2014-07-09 CN CN201420377453.1U patent/CN203992248U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057030A (en) * | 2014-07-09 | 2014-09-24 | 阳城县华王通用离心铸管厂 | Combined model structure for improving product yield of evaporative pattern casting process for cast iron pipe fittings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170709 |